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authorRob Landley <rob@landley.net>2018-03-18 19:54:39 -0500
committerRob Landley <rob@landley.net>2018-03-18 19:54:39 -0500
commit24618ae6f03ef5554bd244fff7be9f19275735b3 (patch)
tree1386b90b448dac82ce171f3a49fef23608d37955 /toys
parentdca9fcccbc192e4b33b15e4139c21c7b514f523a (diff)
downloadtoybox-24618ae6f03ef5554bd244fff7be9f19275735b3.tar.gz
The author of that bc.c says it won't be ready for 6 months and I'm not
to touch it in the meantime, so no point having it in pending.
Diffstat (limited to 'toys')
-rw-r--r--toys/pending/bc.c9297
1 files changed, 0 insertions, 9297 deletions
diff --git a/toys/pending/bc.c b/toys/pending/bc.c
deleted file mode 100644
index bd48b029..00000000
--- a/toys/pending/bc.c
+++ /dev/null
@@ -1,9297 +0,0 @@
-/* bc.c - An implementation of POSIX bc.
- *
- * Copyright 2018 Gavin D. Howard <yzena.tech@gmail.com>
- *
- * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/bc.html
-
-USE_BC(NEWTOY(bc, "cilqsw", TOYFLAG_USR|TOYFLAG_BIN|TOYFLAG_LOCALE))
-
-config BC
- bool "bc"
- default n
- help
- usage: bc [-cilqsw] [file ...]
-
- bc is a command-line calculator with a Turing-complete language.
-
- options:
-
- -c print generated code (for debugging)
- -i force interactive mode
- -l use predefined math routines:
-
- s(expr) = sine of expr in radians
- c(expr) = cosine of expr in radians
- a(expr) = arctangent of expr, returning radians
- l(expr) = natural log of expr
- e(expr) = raises e to the power of expr
- j(n, x) = Bessel function of integer order n of x
-
- -q don't print version and copyright
- -s error if any non-POSIX extensions are used
- -w warn if any non-POSIX extensions are used
-
-*/
-
-#include <assert.h>
-#include <stdbool.h>
-
-#define FOR_bc
-#include "toys.h"
-
-GLOBALS(
- long bc_code;
- long bc_interactive;
- long bc_std;
- long bc_warn;
-
- long bc_signal;
-)
-
-#define BC_BASE_MAX_DEF (99)
-#define BC_DIM_MAX_DEF (2048)
-#define BC_SCALE_MAX_DEF (99)
-#define BC_STRING_MAX_DEF (1024)
-
-typedef enum BcStatus {
-
- BC_STATUS_SUCCESS,
-
- BC_STATUS_MALLOC_FAIL,
- BC_STATUS_IO_ERR,
-
- BC_STATUS_INVALID_PARAM,
-
- BC_STATUS_INVALID_OPTION,
-
- BC_STATUS_NO_LIMIT,
- BC_STATUS_INVALID_LIMIT,
-
- BC_STATUS_VEC_OUT_OF_BOUNDS,
-
- BC_STATUS_VECO_OUT_OF_BOUNDS,
- BC_STATUS_VECO_ITEM_EXISTS,
-
- BC_STATUS_LEX_INVALID_TOKEN,
- BC_STATUS_LEX_NO_STRING_END,
- BC_STATUS_LEX_NO_COMMENT_END,
- BC_STATUS_LEX_EOF,
-
- BC_STATUS_PARSE_INVALID_TOKEN,
- BC_STATUS_PARSE_INVALID_EXPR,
- BC_STATUS_PARSE_INVALID_PRINT,
- BC_STATUS_PARSE_INVALID_FUNC,
- BC_STATUS_PARSE_INVALID_ASSIGN,
- BC_STATUS_PARSE_NO_AUTO,
- BC_STATUS_PARSE_LIMITS,
- BC_STATUS_PARSE_QUIT,
- BC_STATUS_PARSE_MISMATCH_NUM_FUNCS,
- BC_STATUS_PARSE_DUPLICATE_LOCAL,
- BC_STATUS_PARSE_EOF,
- BC_STATUS_PARSE_BUG,
-
- BC_STATUS_MATH_NEGATIVE,
- BC_STATUS_MATH_NON_INTEGER,
- BC_STATUS_MATH_OVERFLOW,
- BC_STATUS_MATH_DIVIDE_BY_ZERO,
- BC_STATUS_MATH_NEG_SQRT,
- BC_STATUS_MATH_INVALID_STRING,
- BC_STATUS_MATH_INVALID_TRUNCATE,
-
- BC_STATUS_EXEC_FILE_ERR,
- BC_STATUS_EXEC_MISMATCHED_PARAMS,
- BC_STATUS_EXEC_UNDEFINED_FUNC,
- BC_STATUS_EXEC_UNDEFINED_VAR,
- BC_STATUS_EXEC_UNDEFINED_ARRAY,
- BC_STATUS_EXEC_FILE_NOT_EXECUTABLE,
- BC_STATUS_EXEC_SIGACTION_FAIL,
- BC_STATUS_EXEC_INVALID_SCALE,
- BC_STATUS_EXEC_INVALID_IBASE,
- BC_STATUS_EXEC_INVALID_OBASE,
- BC_STATUS_EXEC_INVALID_STMT,
- BC_STATUS_EXEC_INVALID_EXPR,
- BC_STATUS_EXEC_INVALID_STRING,
- BC_STATUS_EXEC_STRING_LEN,
- BC_STATUS_EXEC_INVALID_NAME,
- BC_STATUS_EXEC_ARRAY_LENGTH,
- BC_STATUS_EXEC_INVALID_READ_EXPR,
- BC_STATUS_EXEC_RECURSIVE_READ,
- BC_STATUS_EXEC_PRINT_ERR,
- BC_STATUS_EXEC_INVALID_CONSTANT,
- BC_STATUS_EXEC_INVALID_LVALUE,
- BC_STATUS_EXEC_INVALID_RETURN,
- BC_STATUS_EXEC_INVALID_LABEL,
- BC_STATUS_EXEC_INVALID_TYPE,
- BC_STATUS_EXEC_INVALID_STACK,
- BC_STATUS_EXEC_HALT,
-
- BC_STATUS_POSIX_NAME_LEN,
- BC_STATUS_POSIX_SCRIPT_COMMENT,
- BC_STATUS_POSIX_INVALID_KEYWORD,
- BC_STATUS_POSIX_DOT_LAST,
- BC_STATUS_POSIX_RETURN_PARENS,
- BC_STATUS_POSIX_BOOL_OPS,
- BC_STATUS_POSIX_REL_OUTSIDE,
- BC_STATUS_POSIX_MULTIPLE_REL,
- BC_STATUS_POSIX_MISSING_FOR_INIT,
- BC_STATUS_POSIX_MISSING_FOR_COND,
- BC_STATUS_POSIX_MISSING_FOR_UPDATE,
- BC_STATUS_POSIX_FUNC_HEADER_LEFT_BRACE,
-
-} BcStatus;
-
-typedef void (*BcFreeFunc)(void*);
-typedef BcStatus (*BcCopyFunc)(void*, void*);
-
-// ** Exclude start.
-typedef struct BcGlobals {
-
- long bc_code;
- long bc_interactive;
- long bc_std;
- long bc_warn;
-
- long bc_signal;
-
-} BcGlobals;
-
-void bc_error(BcStatus status);
-void bc_error_file(BcStatus status, const char *file, uint32_t line);
-
-BcStatus bc_posix_error(BcStatus status, const char *file,
- uint32_t line, const char *msg);
-
-#define BC_VEC_INITIAL_CAP (32)
-
-typedef int (*BcVecCmpFunc)(void*, void*);
-
-typedef struct BcVec {
-
- uint8_t *array;
- size_t len;
- size_t cap;
- size_t size;
-
- BcFreeFunc dtor;
-
-} BcVec;
-
-typedef struct BcVecO {
-
- BcVec vec;
- BcVecCmpFunc cmp;
-
-} BcVecO;
-
-typedef signed char BcDigit;
-
-typedef struct BcNum {
-
- BcDigit *num;
- size_t rdx;
- size_t len;
- size_t cap;
- bool neg;
-
-} BcNum;
-
-#define BC_NUM_MIN_BASE (2)
-
-#define BC_NUM_MAX_INPUT_BASE (16)
-
-#define BC_NUM_MAX_OUTPUT_BASE (99)
-
-#define BC_NUM_DEF_SIZE (16)
-
-#define BC_NUM_FROM_CHAR(c) ((c) -'0')
-
-#define BC_NUM_TO_CHAR(n) ((n) + '0')
-
-#define BC_NUM_PRINT_WIDTH (69)
-
-#define BC_NUM_ZERO(n) (!(n)->len)
-
-#define BC_NUM_ONE(n) ((n)->len == 1 && (n)->rdx == 0 && (n)->num[0] == 1)
-
-#define BC_NUM_POS_ONE(n) (BC_NUM_ONE(n) && !(n)->neg)
-#define BC_NUM_NEG_ONE(n) (BC_NUM_ONE(n) && (n)->neg)
-
-typedef BcStatus (*BcNumUnaryFunc)(BcNum*, BcNum*, size_t);
-typedef BcStatus (*BcNumBinaryFunc)(BcNum*, BcNum*, BcNum*, size_t);
-
-typedef BcStatus (*BcNumDigitFunc)(unsigned long, size_t, size_t*, FILE*);
-
-BcStatus bc_num_init(BcNum *n, size_t request);
-
-BcStatus bc_num_expand(BcNum *n, size_t request);
-
-void bc_num_free(void *num);
-
-BcStatus bc_num_copy(void *dest, void *src);
-
-BcStatus bc_num_long(BcNum *n, long *result);
-BcStatus bc_num_ulong(BcNum *n, unsigned long *result);
-
-BcStatus bc_num_long2num(BcNum *n, long val);
-BcStatus bc_num_ulong2num(BcNum *n, unsigned long val);
-
-BcStatus bc_num_truncate(BcNum *n);
-
-BcStatus bc_num_add(BcNum *a, BcNum *b, BcNum *result, size_t scale);
-BcStatus bc_num_sub(BcNum *a, BcNum *b, BcNum *result, size_t scale);
-BcStatus bc_num_mul(BcNum *a, BcNum *b, BcNum *result, size_t scale);
-BcStatus bc_num_div(BcNum *a, BcNum *b, BcNum *result, size_t scale);
-BcStatus bc_num_mod(BcNum *a, BcNum *b, BcNum *result, size_t scale);
-
-int bc_num_compare(BcNum *a, BcNum *b);
-
-void bc_num_zero(BcNum *n);
-void bc_num_one(BcNum *n);
-void bc_num_ten(BcNum *n);
-
-#define BC_PROGRAM_MAX_STMTS (128)
-
-#define BC_PROGRAM_DEF_SIZE (16)
-
-typedef enum BcExprType {
-
- BC_EXPR_INC_PRE,
- BC_EXPR_DEC_PRE,
-
- BC_EXPR_INC_POST,
- BC_EXPR_DEC_POST,
-
- BC_EXPR_NEGATE,
-
- BC_EXPR_POWER,
-
- BC_EXPR_MULTIPLY,
- BC_EXPR_DIVIDE,
- BC_EXPR_MODULUS,
-
- BC_EXPR_PLUS,
- BC_EXPR_MINUS,
-
- BC_EXPR_REL_EQUAL,
- BC_EXPR_REL_LESS_EQ,
- BC_EXPR_REL_GREATER_EQ,
- BC_EXPR_REL_NOT_EQ,
- BC_EXPR_REL_LESS,
- BC_EXPR_REL_GREATER,
-
- BC_EXPR_BOOL_NOT,
-
- BC_EXPR_BOOL_OR,
- BC_EXPR_BOOL_AND,
-
- BC_EXPR_ASSIGN_POWER,
- BC_EXPR_ASSIGN_MULTIPLY,
- BC_EXPR_ASSIGN_DIVIDE,
- BC_EXPR_ASSIGN_MODULUS,
- BC_EXPR_ASSIGN_PLUS,
- BC_EXPR_ASSIGN_MINUS,
- BC_EXPR_ASSIGN,
-
- BC_EXPR_NUMBER,
- BC_EXPR_VAR,
- BC_EXPR_ARRAY_ELEM,
-
- BC_EXPR_FUNC_CALL,
-
- BC_EXPR_SCALE_FUNC,
- BC_EXPR_SCALE,
- BC_EXPR_IBASE,
- BC_EXPR_OBASE,
- BC_EXPR_LAST,
- BC_EXPR_LENGTH,
- BC_EXPR_READ,
- BC_EXPR_SQRT,
-
- BC_EXPR_PRINT,
-
-} BcExprType;
-
-typedef struct BcEntry {
-
- char *name;
- size_t idx;
-
-} BcEntry;
-
-typedef struct BcAuto {
-
- char *name;
- bool var;
-
- union {
-
- BcNum num;
- BcVec array;
-
- } data;
-
-} BcAuto;
-
-typedef struct BcFunc {
-
- BcVec code;
-
- BcVec labels;
-
- BcVec params;
-
- BcVec autos;
-
-} BcFunc;
-
-typedef BcNum BcVar;
-
-typedef BcVec BcArray;
-
-typedef enum BcResultType {
-
- BC_RESULT_INTERMEDIATE,
-
- BC_RESULT_CONSTANT,
-
- BC_RESULT_VAR,
- BC_RESULT_ARRAY,
-
- BC_RESULT_SCALE,
- BC_RESULT_LAST,
- BC_RESULT_IBASE,
- BC_RESULT_OBASE,
-
- BC_RESULT_ONE,
-
-} BcResultType;
-
-typedef struct BcResult {
-
- BcResultType type;
-
- union {
-
- BcNum num;
-
- struct {
-
- char *name;
- size_t idx;
-
- } id;
-
- } data;
-
-} BcResult;
-
-typedef struct BcInstPtr {
-
- size_t func;
- size_t idx;
- size_t len;
-
-} BcInstPtr;
-
-typedef BcStatus (*BcDataInitFunc)(void*);
-
-BcStatus bc_auto_init(void *auto1, char *name, bool var);
-void bc_auto_free(void *auto1);
-
-#define BC_INST_CALL ((uint8_t) 'C')
-#define BC_INST_RETURN ((uint8_t) 'R')
-#define BC_INST_RETURN_ZERO ((uint8_t) '$')
-
-#define BC_INST_READ ((uint8_t) 'r')
-
-#define BC_INST_JUMP ((uint8_t) 'J')
-#define BC_INST_JUMP_NOT_ZERO ((uint8_t) 'n')
-#define BC_INST_JUMP_ZERO ((uint8_t) 'z')
-
-#define BC_INST_PUSH_VAR ((uint8_t) 'V')
-#define BC_INST_PUSH_ARRAY ((uint8_t) 'A')
-
-#define BC_INST_PUSH_LAST ((uint8_t) 'L')
-#define BC_INST_PUSH_SCALE ((uint8_t) '.')
-#define BC_INST_PUSH_IBASE ((uint8_t) 'I')
-#define BC_INST_PUSH_OBASE ((uint8_t) 'O')
-
-#define BC_INST_SCALE_FUNC ((uint8_t) 'a')
-#define BC_INST_LENGTH ((uint8_t) 'l')
-#define BC_INST_SQRT ((uint8_t) 'q')
-
-#define BC_INST_PUSH_NUM ((uint8_t) 'N')
-#define BC_INST_POP ((uint8_t) 'P')
-#define BC_INST_INC_DUP ((uint8_t) 'E')
-#define BC_INST_DEC_DUP ((uint8_t) 'D')
-
-#define BC_INST_INC ((uint8_t) 'e')
-#define BC_INST_DEC ((uint8_t) 'd')
-
-#define BC_INST_HALT ((uint8_t) 'H')
-
-#define BC_INST_PRINT ((uint8_t) 'p')
-#define BC_INST_PRINT_EXPR ((uint8_t) 'Q')
-#define BC_INST_STR ((uint8_t) 's')
-#define BC_INST_PRINT_STR ((uint8_t) 'S')
-
-#define BC_INST_OP_POWER ((uint8_t) '^')
-#define BC_INST_OP_MULTIPLY ((uint8_t) '*')
-#define BC_INST_OP_DIVIDE ((uint8_t) '/')
-#define BC_INST_OP_MODULUS ((uint8_t) '%')
-#define BC_INST_OP_PLUS ((uint8_t) '+')
-#define BC_INST_OP_MINUS ((uint8_t) '-')
-
-#define BC_INST_OP_REL_EQUAL ((uint8_t) '=')
-#define BC_INST_OP_REL_LESS_EQ ((uint8_t) ';')
-#define BC_INST_OP_REL_GREATER_EQ ((uint8_t) '?')
-#define BC_INST_OP_REL_NOT_EQ ((uint8_t) '~')
-#define BC_INST_OP_REL_LESS ((uint8_t) '<')
-#define BC_INST_OP_REL_GREATER ((uint8_t) '>')
-
-#define BC_INST_OP_BOOL_NOT ((uint8_t) '!')
-
-#define BC_INST_OP_BOOL_OR ((uint8_t) '|')
-#define BC_INST_OP_BOOL_AND ((uint8_t) '&')
-
-#define BC_INST_OP_NEGATE ((uint8_t) '_')
-
-#define BC_INST_OP_ASSIGN_POWER ((uint8_t) '`')
-#define BC_INST_OP_ASSIGN_MULTIPLY ((uint8_t) '{')
-#define BC_INST_OP_ASSIGN_DIVIDE ((uint8_t) '}')
-#define BC_INST_OP_ASSIGN_MODULUS ((uint8_t) '@')
-#define BC_INST_OP_ASSIGN_PLUS ((uint8_t) '[')
-#define BC_INST_OP_ASSIGN_MINUS ((uint8_t) ']')
-#define BC_INST_OP_ASSIGN ((uint8_t) ',')
-
-typedef int (*BcIoGetc)(void*);
-
-#define bc_io_gets(buf, n) bc_io_fgets((buf), (n), stdin)
-#define bc_io_getline(p, n) bc_io_fgetline((p), (n), stdin)
-
-#define BC_LEX_GEN_ENUM(ENUM) ENUM,
-#define BC_LEX_GEN_STR(STRING) #STRING,
-
-// BC_LEX_OP_NEGATE is not used in lexing;
-// it is only for parsing.
-#define BC_LEX_TOKEN_FOREACH(TOKEN) \
- TOKEN(BC_LEX_OP_INC) \
- TOKEN(BC_LEX_OP_DEC) \
- \
- TOKEN(BC_LEX_OP_NEGATE) \
- \
- TOKEN(BC_LEX_OP_POWER) \
- \
- TOKEN(BC_LEX_OP_MULTIPLY) \
- TOKEN(BC_LEX_OP_DIVIDE) \
- TOKEN(BC_LEX_OP_MODULUS) \
- \
- TOKEN(BC_LEX_OP_PLUS) \
- TOKEN(BC_LEX_OP_MINUS) \
- \
- TOKEN(BC_LEX_OP_REL_EQUAL) \
- TOKEN(BC_LEX_OP_REL_LESS_EQ) \
- TOKEN(BC_LEX_OP_REL_GREATER_EQ) \
- TOKEN(BC_LEX_OP_REL_NOT_EQ) \
- TOKEN(BC_LEX_OP_REL_LESS) \
- TOKEN(BC_LEX_OP_REL_GREATER) \
- \
- TOKEN(BC_LEX_OP_BOOL_NOT) \
- \
- TOKEN(BC_LEX_OP_BOOL_OR) \
- TOKEN(BC_LEX_OP_BOOL_AND) \
- \
- TOKEN(BC_LEX_OP_ASSIGN_POWER) \
- TOKEN(BC_LEX_OP_ASSIGN_MULTIPLY) \
- TOKEN(BC_LEX_OP_ASSIGN_DIVIDE) \
- TOKEN(BC_LEX_OP_ASSIGN_MODULUS) \
- TOKEN(BC_LEX_OP_ASSIGN_PLUS) \
- TOKEN(BC_LEX_OP_ASSIGN_MINUS) \
- TOKEN(BC_LEX_OP_ASSIGN) \
- \
- TOKEN(BC_LEX_NEWLINE) \
- \
- TOKEN(BC_LEX_WHITESPACE) \
- \
- TOKEN(BC_LEX_LEFT_PAREN) \
- TOKEN(BC_LEX_RIGHT_PAREN) \
- \
- TOKEN(BC_LEX_LEFT_BRACKET) \
- TOKEN(BC_LEX_RIGHT_BRACKET) \
- \
- TOKEN(BC_LEX_LEFT_BRACE) \
- TOKEN(BC_LEX_RIGHT_BRACE) \
- \
- TOKEN(BC_LEX_COMMA) \
- TOKEN(BC_LEX_SEMICOLON) \
- \
- TOKEN(BC_LEX_STRING) \
- TOKEN(BC_LEX_NAME) \
- TOKEN(BC_LEX_NUMBER) \
- \
- TOKEN(BC_LEX_KEY_AUTO) \
- TOKEN(BC_LEX_KEY_BREAK) \
- TOKEN(BC_LEX_KEY_CONTINUE) \
- TOKEN(BC_LEX_KEY_DEFINE) \
- TOKEN(BC_LEX_KEY_ELSE) \
- TOKEN(BC_LEX_KEY_FOR) \
- TOKEN(BC_LEX_KEY_HALT) \
- TOKEN(BC_LEX_KEY_IBASE) \
- TOKEN(BC_LEX_KEY_IF) \
- TOKEN(BC_LEX_KEY_LAST) \
- TOKEN(BC_LEX_KEY_LENGTH) \
- TOKEN(BC_LEX_KEY_LIMITS) \
- TOKEN(BC_LEX_KEY_OBASE) \
- TOKEN(BC_LEX_KEY_PRINT) \
- TOKEN(BC_LEX_KEY_QUIT) \
- TOKEN(BC_LEX_KEY_READ) \
- TOKEN(BC_LEX_KEY_RETURN) \
- TOKEN(BC_LEX_KEY_SCALE) \
- TOKEN(BC_LEX_KEY_SQRT) \
- TOKEN(BC_LEX_KEY_WHILE) \
- \
- TOKEN(BC_LEX_EOF) \
- \
- TOKEN(BC_LEX_INVALID) \
-
-typedef enum BcLexTokenType {
- BC_LEX_TOKEN_FOREACH(BC_LEX_GEN_ENUM)
-} BcLexTokenType;
-
-typedef struct BcLexToken {
-
- BcLexTokenType type;
- char *string;
-
-} BcLexToken;
-
-typedef struct BcLex {
-
- const char *buffer;
- size_t idx;
- uint32_t line;
- bool newline;
- const char *file;
- size_t len;
-
-} BcLex;
-
-typedef struct BcLexKeyword {
-
- const char name[9];
- const unsigned char len;
- const bool posix;
-
-} BcLexKeyword;
-
-#define KW_TABLE_ENTRY(a, b, c) { .name = a, .len = b, .posix = c }
-
-#define BC_PROGRAM_BUF_SIZE (1024)
-
-typedef struct BcProgram {
-
- BcVec ip_stack;
-
- size_t scale;
-
- BcNum ibase;
- size_t ibase_t;
- BcNum obase;
- size_t obase_t;
-
- long base_max;
- long dim_max;
- long scale_max;
- long string_max;
-
- BcVec expr_stack;
-
- BcVec stack;
-
- BcVec funcs;
-
- BcVecO func_map;
-
- BcVec vars;
-
- BcVecO var_map;
-
- BcVec arrays;
-
- BcVecO array_map;
-
- BcVec strings;
-
- BcVec constants;
-
- const char *file;
-
- BcNum last;
-
- BcNum zero;
- BcNum one;
-
- char *num_buf;
- size_t buf_size;
-
-} BcProgram;
-
-#define BC_PROGRAM_CHECK_STACK(p) ((p)->stack.len > 1)
-#define BC_PROGRAM_CHECK_EXPR_STACK(p, l) ((p)->expr_stack.len >= (l))
-
-#define BC_PROGRAM_MAIN_FUNC (0)
-#define BC_PROGRAM_READ_FUNC (1)
-
-#define BC_PROGRAM_SEARCH_VAR (1<<0)
-#define BC_PROGRAM_SEARCH_ARRAY_ONLY (1<<1)
-
-typedef BcStatus (*BcProgramExecFunc)(BcProgram*);
-typedef unsigned long (*BcProgramBuiltInFunc)(BcNum*);
-typedef void (*BcNumInitFunc)(BcNum*);
-
-BcStatus bc_program_func_add(BcProgram *p, char *name, size_t *idx);
-BcStatus bc_program_exec(BcProgram *p);
-
-#define BC_PARSE_TOP_FLAG_PTR(parse) \
- ((uint8_t*) bc_vec_top(&(parse)->flags))
-
-#define BC_PARSE_TOP_FLAG(parse) \
- (*(BC_PARSE_TOP_FLAG_PTR(parse)))
-
-#define BC_PARSE_FLAG_FUNC_INNER (0x01)
-
-#define BC_PARSE_FUNC_INNER(parse) \
- (BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_FUNC_INNER)
-
-#define BC_PARSE_FLAG_FUNC (0x02)
-
-#define BC_PARSE_FUNC(parse) \
- (BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_FUNC)
-
-#define BC_PARSE_FLAG_BODY (0x04)
-
-#define BC_PARSE_BODY(parse) \
- (BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_BODY)
-
-#define BC_PARSE_FLAG_LOOP (0x08)
-
-#define BC_PARSE_LOOP(parse) \
- (BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_LOOP)
-
-#define BC_PARSE_FLAG_LOOP_INNER (0x10)
-
-#define BC_PARSE_LOOP_INNER(parse) \
- (BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_LOOP_INNER)
-
-#define BC_PARSE_FLAG_IF (0x20)
-
-#define BC_PARSE_IF(parse) \
- (BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_IF)
-
-#define BC_PARSE_FLAG_ELSE (0x40)
-
-#define BC_PARSE_ELSE(parse) \
- (BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_ELSE)
-
-#define BC_PARSE_FLAG_IF_END (0x80)
-
-#define BC_PARSE_IF_END(parse) \
- (BC_PARSE_TOP_FLAG(parse) & BC_PARSE_FLAG_IF_END)
-
-#define BC_PARSE_CAN_EXEC(parse) \
- (!(BC_PARSE_TOP_FLAG(parse) & (BC_PARSE_FLAG_FUNC_INNER | \
- BC_PARSE_FLAG_FUNC | \
- BC_PARSE_FLAG_BODY | \
- BC_PARSE_FLAG_LOOP | \
- BC_PARSE_FLAG_LOOP_INNER | \
- BC_PARSE_FLAG_IF | \
- BC_PARSE_FLAG_ELSE | \
- BC_PARSE_FLAG_IF_END)))
-
-// We can calculate the conversion between tokens and exprs
-// by subtracting the position of the first operator in the
-// lex enum and adding the position of the first in the expr
-// enum. Note: This only works for binary operators.
-#define BC_PARSE_TOKEN_TO_EXPR(type) ((type) - BC_LEX_OP_POWER + BC_EXPR_POWER)
-
-typedef struct BcOp {
-
- uint8_t prec;
- bool left;
-
-} BcOp;
-
-typedef struct BcParse {
-
- BcLex lex;
- BcLexToken token;
-
- BcVec flags;
-
- BcVec exit_labels;
-
- BcVec cond_labels;
-
- BcVec ops;
-
- BcProgram *program;
- size_t func;
-
- uint32_t num_braces;
-
- bool auto_part;
-
-} BcParse;
-
-#define BC_PARSE_EXPR_POSIX_REL (1<<0)
-#define BC_PARSE_EXPR_PRINT (1<<1)
-#define BC_PARSE_EXPR_NO_CALL (1<<2)
-#define BC_PARSE_EXPR_NO_READ (1<<3)
-
-BcStatus bc_parse_expr(BcParse *parse, BcVec *code, uint8_t flags);
-
-#define BC_VM_BUF_SIZE (1024)
-
-typedef struct BcVm {
-
- BcProgram program;
- BcParse parse;
-
- int filec;
- const char** filev;
-
-} BcVm;
-
-const char *bc_version = "0.1";
-
-const char *bc_copyright = "bc copyright (c) 2018 Gavin D. Howard";
-
-const char *bc_warranty_short =
- "This is free software with ABSOLUTELY NO WARRANTY.";
-
-const char *bc_version_fmt = "bc %s\n%s\n\n%s\n\n";
-
-const char *bc_err_types[] = {
-
- NULL,
-
- "bc",
- "bc",
-
- "bc",
-
- "bc",
-
- "bc",
- "bc",
-
- "vector",
-
- "ordered vector",
- "ordered vector",
-
- "Lex",
- "Lex",
- "Lex",
- "Lex",
-
- "Parse",
- "Parse",
- "Parse",
- "Parse",
- "Parse",
- "Parse",
- "Parse",
- "Parse",
- "Parse",
- "Parse",
- "Parse",
- "Parse",
-
- "Math",
- "Math",
- "Math",
- "Math",
- "Math",
- "Math",
- "Math",
-
- "Runtime",
- "Runtime",
- "Runtime",
- "Runtime",
- "Runtime",
- "Runtime",
- "Runtime",
- "Runtime",
- "Runtime",
- "Runtime",
- "Runtime",
- "Runtime",
- "Runtime",
- "Runtime",
- "Runtime",
- "Runtime",
- "Runtime",
- "Runtime",
- "Runtime",
- "Runtime",
- "Runtime",
- "Runtime",
- "Runtime",
- "Runtime",
- "Runtime",
- "Runtime",
-
- "POSIX",
- "POSIX",
- "POSIX",
- "POSIX",
- "POSIX",
- "POSIX",
- "POSIX",
- "POSIX",
- "POSIX",
- "POSIX",
- "POSIX",
- "POSIX",
-
-};
-
-const char *bc_err_descs[] = {
-
- NULL,
-
- "memory allocation error",
- "I/O error",
-
- "invalid parameter",
-
- "invalid option",
-
- "one or more limits not specified",
- "invalid limit; this is a bug in bc",
-
- "index is out of bounds for the vector and error was not caught; "
- "this is probably a bug in bc",
-
- "index is out of bounds for the ordered vector and error was not caught; "
- "this is probably a bug in bc",
- "item already exists in ordered vector and error was not caught; "
- "this is probably a bug in bc",
-
- "invalid token",
- "string end could not be found",
- "comment end could not be found",
- "end of file",
-
- "invalid token",
- "invalid expression",
- "invalid print statement",
- "invalid function definition",
- "invalid assignment: must assign to scale, "
- "ibase, obase, last, a variable, or an array element",
- "no auto variable found",
- "limits statement in file not handled correctly; "
- "this is most likely a bug in bc",
- "quit statement in file not exited correctly; "
- "this is most likely a bug in bc",
- "number of functions does not match the number of entries "
- "in the function map; this is most likely a bug in bc",
- "function parameter or auto var has the same name as another",
- "end of file",
- "bug in parser",
-
- "negative number",
- "non integer number",
- "overflow",
- "divide by zero",
- "negative square root",
- "invalid number string",
- "cannot truncate more places than exist after the decimal point",
-
- "couldn't open file",
- "mismatched parameters",
- "undefined function",
- "undefined variable",
- "undefined array",
- "file is not executable",
- "could not install signal handler",
- "invalid value for scale; must be an integer in the range [0, BC_SCALE_MAX]",
- "invalid value for ibase; must be an integer in the range [2, 16]",
- "invalid value for obase; must be an integer in the range [2, BC_BASE_MAX]",
- "invalid statement; this is most likely a bug in bc",
- "invalid expression; this is most likely a bug in bc",
- "invalid string",
- "string too long: length must be in the range [0, BC_STRING_MAX]",
- "invalid name/identifier",
- "invalid array length; must be an integer in the range [1, BC_DIM_MAX]",
- "invalid read() expression",
- "read() call inside of a read() call",
- "print error",
- "invalid constant",
- "invalid lvalue; cannot assign to constants or intermediate values",
- "cannot return from function; no function to return from",
- "invalid label; this is probably a bug in bc",
- "variable is wrong type",
- "invalid stack; this is probably a bug in bc",
- "bc was not halted correctly; this is a bug in bc",
-
- "POSIX only allows one character names; the following is invalid:",
- "POSIX does not allow '#' script comments",
- "POSIX does not allow the following keyword:",
- "POSIX does not allow a period ('.') as a shortcut for the last result",
- "POSIX requires parentheses around return expressions",
- "POSIX does not allow boolean operators; the following is invalid:",
- "POSIX does not allow comparison operators outside if or loops",
- "POSIX does not allow more than one comparison operator per condition",
- "POSIX does not allow an empty init expression in a for loop",
- "POSIX does not allow an empty condition expression in a for loop",
- "POSIX does not allow an empty update expression in a for loop",
- "POSIX requires the left brace be on the same line as the function header",
-
-};
-
-const char *bc_lang_func_main = "(main)";
-const char *bc_lang_func_read = "(read)";
-
-const char *bc_lex_token_type_strs[] = {
- BC_LEX_TOKEN_FOREACH(BC_LEX_GEN_STR)
-};
-
-const BcLexKeyword bc_lex_keywords[20] = {
- KW_TABLE_ENTRY("auto", 4, true),
- KW_TABLE_ENTRY("break", 5, true),
- KW_TABLE_ENTRY("continue", 8, false),
- KW_TABLE_ENTRY("define", 6, true),
- KW_TABLE_ENTRY("else", 4, false),
- KW_TABLE_ENTRY("for", 3, true),
- KW_TABLE_ENTRY("halt", 4, false),
- KW_TABLE_ENTRY("ibase", 5, true),
- KW_TABLE_ENTRY("if", 2, true),
- KW_TABLE_ENTRY("last", 4, false),
- KW_TABLE_ENTRY("length", 6, true),
- KW_TABLE_ENTRY("limits", 6, false),
- KW_TABLE_ENTRY("obase", 5, true),
- KW_TABLE_ENTRY("print", 5, false),
- KW_TABLE_ENTRY("quit", 4, true),
- KW_TABLE_ENTRY("read", 4, false),
- KW_TABLE_ENTRY("return", 6, true),
- KW_TABLE_ENTRY("scale", 5, true),
- KW_TABLE_ENTRY("sqrt", 4, true),
- KW_TABLE_ENTRY("while", 5, true),
-};
-
-const char bc_num_hex_digits[] = "0123456789ABCDEF";
-
-// This is an array that corresponds to token types. An entry is
-// true if the token is valid in an expression, false otherwise.
-const bool bc_parse_token_exprs[] = {
-
- true,
- true,
-
- true,
-
- true,
- true,
- true,
-
- true,
- true,
-
- true,
- true,
- true,
- true,
- true,
- true,
- true,
-
- true,
- true,
- true,
- true,
- true,
- true,
-
- true,
-
- true,
- true,
-
- true,
-
- false,
-
- false,
-
- true,
- true,
-
- false,
- false,
-
- false,
- false,
-
- false,
- false,
-
- false,
- true,
- true,
-
- false,
- false,
- false,
- false,
- false,
- false,
- false,
- true,
- false,
- true,
- true,
- true,
- true,
- false,
- false,
- true,
- false,
- true,
- true,
- false,
-
- false,
-
- false,
-};
-
-// This is an array of data for operators that correspond to token types.
-// The last corresponds to BC_PARSE_OP_NEGATE_IDX since it doesn't have
-// its own token type (it is the same token at the binary minus operator).
-const BcOp bc_parse_ops[] = {
-
- { 0, false },
- { 0, false },
-
- { 1, false },
-
- { 2, false },
-
- { 3, true },
- { 3, true },
- { 3, true },
-
- { 4, true },
- { 4, true },
-
- { 6, true },
- { 6, true },
- { 6, true },
- { 6, true },
- { 6, true },
- { 6, true },
-
- { 7, false },
-
- { 8, true },
- { 8, true },
-
- { 5, false },
- { 5, false },
- { 5, false },
- { 5, false },
- { 5, false },
- { 5, false },
- { 5, false },
-
-};
-
-const uint8_t bc_parse_insts[] = {
-
- BC_INST_OP_NEGATE,
-
- BC_INST_OP_POWER,
-
- BC_INST_OP_MULTIPLY,
- BC_INST_OP_DIVIDE,
- BC_INST_OP_MODULUS,
-
- BC_INST_OP_PLUS,
- BC_INST_OP_MINUS,
-
- BC_INST_OP_REL_EQUAL,
- BC_INST_OP_REL_LESS_EQ,
- BC_INST_OP_REL_GREATER_EQ,
- BC_INST_OP_REL_NOT_EQ,
- BC_INST_OP_REL_LESS,
- BC_INST_OP_REL_GREATER,
-
- BC_INST_OP_BOOL_NOT,
-
- BC_INST_OP_BOOL_NOT,
- BC_INST_OP_BOOL_AND,
-
- BC_INST_OP_ASSIGN_POWER,
- BC_INST_OP_ASSIGN_MULTIPLY,
- BC_INST_OP_ASSIGN_DIVIDE,
- BC_INST_OP_ASSIGN_MODULUS,
- BC_INST_OP_ASSIGN_PLUS,
- BC_INST_OP_ASSIGN_MINUS,
- BC_INST_OP_ASSIGN,
-
-};
-
-const char *bc_program_byte_fmt = "%02x";
-
-const BcNumBinaryFunc bc_program_math_ops[] = {
-
- bc_num_mod,
- NULL, // &
- NULL, // '
- NULL, // (
- NULL, // )
- bc_num_mul,
- bc_num_add,
- NULL, // ,
- bc_num_sub,
- NULL, // .
- bc_num_div,
-
-};
-
-const char *bc_program_stdin_name = "<stdin>";
-
-const char *bc_program_ready_prompt = "ready for more input\n\n";
-
-const char *bc_program_sigint_msg = "\n\ninterrupt (type \"quit\" to exit)\n\n";
-const char *bc_lib_name = "lib.bc";
-
-const unsigned char bc_lib[] = {
- 115,99,97,108,101,61,50,48,10,100,101,102,105,110,101,32,101,40,120,41,123,
- 10,9,97,117,116,111,32,98,44,115,44,110,44,114,44,100,44,105,44,112,44,102,
- 44,118,10,9,98,61,105,98,97,115,101,10,9,105,98,97,115,101,61,65,10,9,105,102,
- 40,120,60,48,41,123,10,9,9,110,61,49,10,9,9,120,61,45,120,10,9,125,10,9,115,
- 61,115,99,97,108,101,10,9,114,61,115,43,55,43,48,46,52,53,42,120,10,9,115,99,
- 97,108,101,61,115,99,97,108,101,40,120,41,43,49,10,9,119,104,105,108,101,40,
- 120,62,49,41,123,10,9,9,100,43,61,49,10,9,9,120,47,61,50,10,9,9,115,99,97,108,
- 101,43,61,49,10,9,125,10,9,115,99,97,108,101,61,114,10,9,114,61,120,43,49,10,
- 9,112,61,120,10,9,102,61,49,10,9,102,111,114,40,105,61,50,59,49,59,43,43,105,
- 41,123,10,9,9,112,42,61,120,59,10,9,9,102,42,61,105,10,9,9,118,61,112,47,102,
- 10,9,9,105,102,40,101,61,61,48,41,98,114,101,97,107,10,9,9,114,43,61,118,10,
- 9,125,10,9,119,104,105,108,101,40,102,45,45,41,114,42,61,114,10,9,115,99,97,
- 108,101,61,115,10,9,105,98,97,115,101,61,98,10,9,105,102,40,109,41,114,101,
- 116,117,114,110,40,49,47,114,41,10,9,114,101,116,117,114,110,40,114,47,49,41,
- 10,125,10,100,101,102,105,110,101,32,108,40,120,41,123,10,9,97,117,116,111,
- 32,98,44,115,44,114,44,112,44,97,44,113,44,105,44,118,10,9,98,61,105,98,97,
- 115,101,10,9,105,98,97,115,101,61,65,10,9,105,102,40,120,60,61,48,41,123,10,
- 9,9,114,61,40,49,45,49,48,94,115,99,97,108,101,41,47,49,10,9,9,105,98,97,115,
- 101,61,98,10,9,9,114,101,116,117,114,110,40,114,41,10,9,125,10,9,115,61,115,
- 99,97,108,101,10,9,115,99,97,108,101,43,61,55,10,9,112,61,50,10,9,119,104,105,
- 108,101,40,120,62,61,50,41,123,10,9,9,112,42,61,50,10,9,9,120,61,115,113,114,
- 116,40,120,41,10,9,125,10,9,119,104,105,108,101,40,120,60,61,48,46,53,41,123,
- 10,9,9,112,42,61,50,10,9,9,120,61,115,113,114,116,40,120,41,10,9,125,10,9,114,
- 61,97,61,40,120,45,49,41,47,40,120,43,49,41,10,9,113,61,97,42,97,10,9,102,111,
- 114,40,105,61,51,59,49,59,105,43,61,50,41,123,10,9,9,110,42,61,109,10,9,9,118,
- 61,110,47,105,10,9,9,105,102,40,101,61,61,48,41,98,114,101,97,107,10,9,9,114,
- 43,61,118,10,9,125,10,9,114,42,61,112,10,9,115,99,97,108,101,61,115,10,9,105,
- 98,97,115,101,61,98,10,9,114,101,116,117,114,110,40,114,47,49,41,10,125,10,
- 100,101,102,105,110,101,32,115,40,120,41,123,10,9,97,117,116,111,32,98,44,115,
- 44,114,44,110,44,97,44,113,44,105,10,9,98,61,105,98,97,115,101,10,9,105,98,
- 97,115,101,61,65,10,9,115,61,115,99,97,108,101,10,9,115,99,97,108,101,61,49,
- 46,51,42,115,43,50,10,9,97,61,97,40,49,41,10,9,105,102,40,120,60,48,41,123,
- 10,9,9,110,61,49,10,9,9,120,61,45,120,10,9,125,10,9,115,99,97,108,101,61,48,
- 10,9,113,61,40,120,47,97,43,50,41,47,52,10,9,120,45,61,52,42,113,42,97,10,9,
- 105,102,40,113,37,50,41,120,61,45,120,10,9,115,99,97,108,101,61,115,43,50,10,
- 9,114,61,97,61,120,10,9,113,61,45,120,42,120,10,9,102,111,114,40,105,61,51,
- 59,49,59,105,43,61,50,41,123,10,9,9,97,42,61,113,47,40,105,42,40,105,45,49,
- 41,41,10,9,9,105,102,40,97,61,61,48,41,98,114,101,97,107,10,9,9,114,43,61,97,
- 10,9,125,10,9,115,99,97,108,101,61,115,10,9,105,98,97,115,101,61,98,10,9,105,
- 102,40,110,41,114,101,116,117,114,110,40,45,114,47,49,41,10,9,114,101,116,117,
- 114,110,40,114,47,49,41,10,125,10,100,101,102,105,110,101,32,99,40,120,41,123,
- 10,9,97,117,116,111,32,98,44,115,10,9,98,61,105,98,97,115,101,10,9,105,98,97,
- 115,101,61,65,10,9,115,61,115,99,97,108,101,10,9,115,99,97,108,101,43,61,49,
- 10,9,120,61,115,40,50,42,97,40,49,41,43,120,41,10,9,115,99,97,108,101,61,115,
- 10,9,105,98,97,115,101,61,98,10,9,114,101,116,117,114,110,40,120,47,49,41,10,
- 125,10,100,101,102,105,110,101,32,97,40,120,41,123,10,9,97,117,116,111,32,98,
- 44,115,44,114,44,110,44,97,44,109,44,116,44,102,44,105,44,117,10,9,98,61,105,
- 98,97,115,101,10,9,105,98,97,115,101,61,65,10,9,110,61,49,10,9,105,102,40,120,
- 60,48,41,123,10,9,9,110,61,45,49,10,9,9,120,61,45,120,10,9,125,10,9,105,102,
- 40,120,61,61,49,41,123,10,9,9,105,102,40,115,99,97,108,101,60,61,54,52,41,123,
- 10,9,9,9,114,101,116,117,114,110,40,46,55,56,53,51,57,56,49,54,51,51,57,55,
- 52,52,56,51,48,57,54,49,53,54,54,48,56,52,53,56,49,57,56,55,53,55,50,49,48,
- 52,57,50,57,50,51,52,57,56,52,51,55,55,54,52,53,53,50,52,51,55,51,54,49,52,
- 56,48,47,110,41,10,9,9,125,10,9,125,10,9,105,102,40,120,61,61,46,50,54,55,41,
- 123,10,9,9,105,102,40,115,99,97,108,101,60,61,54,52,41,123,10,9,9,9,114,101,
- 116,117,114,110,40,46,50,54,48,57,49,51,53,54,57,50,51,50,57,52,48,53,55,57,
- 53,57,54,55,56,53,50,54,55,55,55,55,57,56,54,53,54,51,57,55,55,52,55,52,48,
- 50,51,57,56,56,50,52,52,53,56,50,50,51,50,57,56,56,50,57,49,55,47,110,41,10,
- 9,9,125,10,9,125,10,9,115,61,115,99,97,108,101,10,9,105,102,40,120,62,46,50,
- 54,55,41,123,10,9,9,115,99,97,108,101,43,61,53,10,9,9,97,61,97,40,46,50,54,
- 55,41,10,9,125,10,9,115,99,97,108,101,61,115,43,51,10,9,119,104,105,108,101,
- 40,120,62,46,50,54,55,41,123,10,9,9,109,43,61,49,10,9,9,120,61,40,120,45,46,
- 50,54,55,41,47,40,49,43,46,50,54,55,42,120,41,10,9,125,10,9,114,61,117,61,120,
- 10,9,102,61,45,120,42,120,10,9,102,111,114,40,105,61,51,59,49,59,105,43,61,
- 50,41,123,10,9,9,117,42,61,102,10,9,9,116,61,117,47,105,10,9,9,105,102,40,116,
- 61,61,48,41,98,114,101,97,107,10,9,9,114,43,61,116,10,9,125,10,9,115,99,97,
- 108,101,61,115,10,9,105,98,97,115,101,61,98,10,9,114,101,116,117,114,110,40,
- 40,109,42,97,43,114,41,47,110,41,10,125,10,100,101,102,105,110,101,32,106,40,
- 110,44,120,41,123,10,9,97,117,116,111,32,98,44,115,44,111,44,97,44,105,44,118,
- 44,102,10,9,98,61,105,98,97,115,101,10,9,105,98,97,115,101,61,65,10,9,115,61,
- 115,99,97,108,101,10,9,115,99,97,108,101,61,48,10,9,110,47,61,49,10,9,105,102,
- 40,110,60,48,41,123,10,9,9,110,61,45,110,10,9,9,105,102,40,110,37,50,61,61,
- 49,41,111,61,49,10,9,125,10,9,97,61,49,10,9,102,111,114,40,105,61,50,59,105,
- 60,61,110,59,43,43,105,41,102,42,61,105,10,9,115,99,97,108,101,61,49,46,53,
- 42,115,10,9,97,61,40,120,94,110,41,47,40,50,94,110,42,97,41,10,9,114,61,118,
- 61,49,10,9,102,61,45,120,42,120,47,52,10,9,115,99,97,108,101,43,61,108,101,
- 110,103,116,104,40,97,41,45,115,99,97,108,101,40,97,41,10,9,102,111,114,40,
- 105,61,49,59,49,59,43,43,105,41,123,10,9,9,118,61,118,42,115,47,105,47,40,110,
- 43,105,41,10,9,9,105,102,40,118,61,61,48,41,98,114,101,97,107,10,9,9,114,43,
- 61,118,10,9,125,10,9,115,99,97,108,101,61,115,10,9,105,98,97,115,101,61,98,
- 10,9,105,102,40,111,41,114,101,116,117,114,110,40,45,97,42,114,47,49,41,10,
- 9,114,101,116,117,114,110,40,97,42,114,47,49,41,10,125,10,0
-};
-
-BcStatus bc_vec_double(BcVec *vec) {
-
- uint8_t *ptr;
-
- ptr = realloc(vec->array, vec->size * (vec->cap * 2));
-
- if (!ptr) return BC_STATUS_MALLOC_FAIL;
-
- vec->array = ptr;
- vec->cap *= 2;
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_vec_init(BcVec *vec, size_t esize, BcFreeFunc dtor) {
-
- if (vec == NULL || esize == 0) return BC_STATUS_INVALID_PARAM;
-
- vec->size = esize;
- vec->cap = BC_VEC_INITIAL_CAP;
- vec->len = 0;
- vec->dtor = dtor;
-
- vec->array = malloc(esize * BC_VEC_INITIAL_CAP);
-
- if (!vec->array) return BC_STATUS_MALLOC_FAIL;
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_vec_expand(BcVec *vec, size_t request) {
-
- uint8_t *ptr;
-
- if (!vec) return BC_STATUS_INVALID_PARAM;
-
- if (vec->cap >= request) return BC_STATUS_SUCCESS;
-
- ptr = realloc(vec->array, vec->size * request);
-
- if (!ptr) return BC_STATUS_MALLOC_FAIL;
-
- vec->array = ptr;
- vec->cap = request;
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_vec_push(BcVec *vec, void *data) {
-
- BcStatus status;
- size_t size;
-
- if (vec == NULL || data == NULL) return BC_STATUS_INVALID_PARAM;
-
- if (vec->len == vec->cap) {
-
- status = bc_vec_double(vec);
-
- if (status) return status;
- }
-
- size = vec->size;
- memmove(vec->array + (size * vec->len), data, size);
-
- ++vec->len;
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_vec_pushByte(BcVec *vec, uint8_t data) {
-
- BcStatus status;
-
- if (vec == NULL || vec->size != sizeof(uint8_t))
- return BC_STATUS_INVALID_PARAM;
-
- if (vec->len == vec->cap) {
-
- status = bc_vec_double(vec);
-
- if (status) return status;
- }
-
- vec->array[vec->len] = data;
-
- ++vec->len;
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_vec_pushAt(BcVec *vec, void *data, size_t idx) {
-
- BcStatus status;
- uint8_t *ptr;
- size_t size;
-
- if (vec == NULL || data == NULL || idx > vec->len)
- return BC_STATUS_INVALID_PARAM;
-
- if (idx == vec->len) return bc_vec_push(vec, data);
-
- if (vec->len == vec->cap) {
-
- status = bc_vec_double(vec);
-
- if (status) return status;
- }
-
- size = vec->size;
- ptr = vec->array + size * idx;
-
- memmove(ptr + size, ptr, size * (vec->len - idx));
- memmove(ptr, data, size);
-
- ++vec->len;
-
- return BC_STATUS_SUCCESS;
-}
-
-void* bc_vec_top(const BcVec *vec) {
-
- if (vec == NULL || vec->len == 0) return NULL;
-
- return vec->array + vec->size * (vec->len - 1);
-}
-
-void* bc_vec_item(const BcVec *vec, size_t idx) {
-
- if (vec == NULL || vec->len == 0 || idx >= vec->len) return NULL;
-
- return vec->array + vec->size * idx;
-}
-
-void* bc_vec_item_rev(const BcVec *vec, size_t idx) {
-
- if (vec == NULL || vec->len == 0 || idx >= vec->len) return NULL;
-
- return vec->array + vec->size * (vec->len - idx - 1);
-}
-
-BcStatus bc_vec_pop(BcVec *vec) {
-
- if (vec == NULL) return BC_STATUS_INVALID_PARAM;
-
- if (!vec->len) return BC_STATUS_VEC_OUT_OF_BOUNDS;
-
- --vec->len;
-
- if (vec->dtor) vec->dtor(vec->array + (vec->size * vec->len));
-
- return BC_STATUS_SUCCESS;
-}
-
-void bc_vec_free(void *vec) {
-
- BcVec *s;
- size_t len;
- size_t esize;
- BcFreeFunc sfree;
- uint8_t *array;
-
- s = (BcVec*) vec;
-
- if (s == NULL) return;
-
- sfree = s->dtor;
-
- if (sfree) {
- size_t i;
-
- len = s->len;
- array = s->array;
- esize = s->size;
-
- for (i = 0; i < len; ++i) sfree(array + (i * esize));
- }
-
- free(s->array);
-
- s->size = 0;
- s->array = NULL;
- s->len = 0;
- s->cap = 0;
-}
-
-size_t bc_veco_find(const BcVecO* vec, void *data) {
-
- BcVecCmpFunc cmp;
- size_t low, high;
-
- cmp = vec->cmp;
-
- low = 0;
- high = vec->vec.len;
-
- while (low < high) {
-
- size_t mid;
- int result;
- uint8_t *ptr;
-
- mid = (low + high) / 2;
-
- ptr = bc_vec_item(&vec->vec, mid);
-
- result = cmp(data, ptr);
-
- if (!result) return mid;
-
- if (result < 0) high = mid;
- else low = mid + 1;
- }
-
- return low;
-}
-
-BcStatus bc_veco_init(BcVecO* vec, size_t esize,
- BcFreeFunc dtor, BcVecCmpFunc cmp)
-{
- if (!vec || esize == 0 || !cmp) return BC_STATUS_INVALID_PARAM;
-
- vec->cmp = cmp;
-
- return bc_vec_init(&vec->vec, esize, dtor);
-}
-
-BcStatus bc_veco_insert(BcVecO* vec, void *data, size_t *idx) {
-
- BcStatus status;
-
- if (!vec || !data) return BC_STATUS_INVALID_PARAM;
-
- *idx = bc_veco_find(vec, data);
-
- if (*idx > vec->vec.len) return BC_STATUS_VECO_OUT_OF_BOUNDS;
-
- if (*idx != vec->vec.len && !vec->cmp(data, bc_vec_item(&vec->vec, *idx)))
- return BC_STATUS_VECO_ITEM_EXISTS;
-
- if (*idx >= vec->vec.len) {
- *idx = vec->vec.len;
- status = bc_vec_push(&vec->vec, data);
- }
- else status = bc_vec_pushAt(&vec->vec, data, *idx);
-
- return status;
-}
-
-size_t bc_veco_index(const BcVecO* vec, void *data) {
-
- size_t idx;
-
- if (!vec || !data) return BC_STATUS_INVALID_PARAM;
-
- idx = bc_veco_find(vec, data);
-
- if (idx >= vec->vec.len || vec->cmp(data, bc_vec_item(&vec->vec, idx)))
- return -1;
-
- return idx;
-}
-
-void* bc_veco_item(const BcVecO* vec, size_t idx) {
- return bc_vec_item(&vec->vec, idx);
-}
-
-void bc_veco_free(BcVecO* vec) {
- bc_vec_free(&vec->vec);
-}
-
-int bc_num_compareDigits(BcNum *a, BcNum *b, size_t *digits) {
-
- size_t i;
- size_t min;
- BcDigit *max_num;
- BcDigit *min_num;
- bool a_max;
- bool neg;
- size_t a_int;
- size_t b_int;
- BcDigit *ptr_a;
- BcDigit *ptr_b;
- size_t diff;
- int cmp;
- BcDigit c;
-
- *digits = 0;
-
- if (!a) {
-
- if (!b) return 0;
- else return b->neg ? 1 : -1;
- }
- else if (!b) return a->neg ? -1 : 1;
-
- neg = false;
-
- if (a->neg) {
-
- if (b->neg) neg = true;
- else return -1;
- }
- else if (b->neg) return 1;
-
- if (BC_NUM_ZERO(a)) {
- cmp = b->neg ? 1 : -1;
- return BC_NUM_ZERO(b) ? 0 : cmp;
- }
- else if (BC_NUM_ZERO(b)) return a->neg ? -1 : 1;
-
- a_int = a->len - a->rdx;
- b_int = b->len - b->rdx;
-
- if (a_int > b_int) return 1;
- else if (b_int > a_int) return -1;
-
- ptr_a = a->num + a->rdx;
- ptr_b = b->num + b->rdx;
-
- for (i = a_int - 1; i < a_int; --i, ++(*digits)) {
- c = ptr_a[i] - ptr_b[i];
- if (c) return neg ? -c : c;
- }
-
- a_max = a->rdx > b->rdx;
-
- if (a_max) {
-
- min = b->rdx;
-
- diff = a->rdx - b->rdx;
-
- max_num = a->num + diff;
- min_num = b->num;
-
- for (i = min - 1; i < min; --i, ++(*digits)) {
- c = max_num[i] - min_num[i];
- if (c) return neg ? -c : c;
- }
-
- max_num -= diff;
-
- for (i = diff - 1; i < diff; --i) {
- if (max_num[i]) return neg ? -1 : 1;
- }
- }
- else {
-
- min = a->rdx;
-
- diff = b->rdx - a->rdx;
-
- max_num = b->num + diff;
- min_num = a->num;
-
- for (i = min - 1; i < min; --i, ++(*digits)) {
- c = max_num[i] - min_num[i];
- if (c) return neg ? c : -c;
- }
-
- max_num -= diff;
-
- for (i = diff - 1; i < diff; --i) {
- if (max_num[i]) return neg ? 1 : -1;
- }
- }
-
- return 0;
-}
-
-int bc_num_compareArrays(BcDigit *array1, BcDigit *array2, size_t len) {
-
- size_t i;
- BcDigit c;
-
- if (array1[len]) return 1;
-
- for (i = len - 1; i < len; --i) {
- c = array1[i] - array2[i];
- if (c) return c;
- }
-
- return 0;
-}
-
-BcStatus bc_num_trunc(BcNum *n, size_t places) {
-
- BcDigit *ptr;
-
- if (places > n->rdx) return BC_STATUS_MATH_INVALID_TRUNCATE;
-
- if (places == 0) return BC_STATUS_SUCCESS;
-
- ptr = n->num + places;
-
- n->len -= places;
- n->rdx -= places;
-
- memmove(n->num, ptr, n->len * sizeof(BcDigit));
-
- memset(n->num + n->len, 0, sizeof(BcDigit) * (n->cap - n->len));
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_num_extend(BcNum *n, size_t places) {
-
- BcStatus status;
- BcDigit *ptr;
- size_t len;
-
- if (places == 0) return BC_STATUS_SUCCESS;
-
- len = n->len + places;
-
- if (n->cap < len) {
-
- status = bc_num_expand(n, len);
-
- if (status) return status;
- }
-
- ptr = n->num + places;
-
- memmove(ptr, n->num, sizeof(BcDigit) * n->len);
-
- memset(n->num, 0, sizeof(BcDigit) * places);
-
- n->len += places;
- n->rdx += places;
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_num_alg_a(BcNum *a, BcNum *b, BcNum *c, size_t scale) {
-
- BcDigit *ptr;
- BcDigit *ptr_a;
- BcDigit *ptr_b;
- BcDigit *ptr_c;
- size_t i;
- size_t max;
- size_t min;
- size_t diff;
- size_t a_whole;
- size_t b_whole;
- BcDigit carry;
-
- (void) scale;
-
- c->neg = a->neg;
-
- memset(c->num, 0, c->cap * sizeof(BcDigit));
-
- c->rdx = maxof(a->rdx, b->rdx);
-
- min = minof(a->rdx, b->rdx);
-
- c->len = 0;
-
- if (a->rdx > b->rdx) {
-
- diff = a->rdx - b->rdx;
-
- ptr = a->num;
- ptr_a = a->num + diff;
- ptr_b = b->num;
- }
- else {
-
- diff = b->rdx - a->rdx;
-
- ptr = b->num;
- ptr_a = a->num;
- ptr_b = b->num + diff;
- }
-
- ptr_c = c->num;
-
- for (i = 0; i < diff; ++i) {
- ptr_c[i] = ptr[i];
- ++c->len;
- }
-
- ptr_c += diff;
-
- carry = 0;
-
- for (i = 0; i < min; ++i) {
-
- ptr_c[i] = ptr_a[i] + ptr_b[i] + carry;
- ++c->len;
-
- if (ptr_c[i] >= 10) {
- carry = ptr_c[i] / 10;
- ptr_c[i] %= 10;
- }
- else carry = 0;
- }
-
- c->rdx = c->len;
-
- a_whole = a->len - a->rdx;
- b_whole = b->len - b->rdx;
-
- min = minof(a_whole, b_whole);
-
- ptr_a = a->num + a->rdx;
- ptr_b = b->num + b->rdx;
- ptr_c = c->num + c->rdx;
-
- for (i = 0; i < min; ++i) {
-
- ptr_c[i] = ptr_a[i] + ptr_b[i] + carry;
- ++c->len;
-
- if (ptr_c[i] >= 10) {
- carry = ptr_c[i] / 10;
- ptr_c[i] %= 10;
- }
- else carry = 0;
- }
-
- if (a_whole > b_whole) {
- max = a_whole;
- ptr = ptr_a;
- }
- else {
- max = b_whole;
- ptr = ptr_b;
- }
-
- for (; i < max; ++i) {
-
- ptr_c[i] += ptr[i] + carry;
- ++c->len;
-
- if (ptr_c[i] >= 10) {
- carry = ptr_c[i] / 10;
- ptr_c[i] %= 10;
- }
- else carry = 0;
- }
-
- if (carry) {
- ++c->len;
- ptr_c[i] = carry;
- }
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_num_alg_s(BcNum *a, BcNum *b, BcNum *c, size_t sub) {
-
- BcStatus status;
- int cmp;
- BcNum *minuend;
- BcNum *subtrahend;
- size_t i, j, start;
- bool aneg, bneg, neg;
-
- // Because this function doesn't need to use scale (per the bc spec),
- // I am hijacking it to tell this function whether it is doing an add
- // or a subtract.
-
- if (BC_NUM_ZERO(a)) {
- status = bc_num_copy(c, b);
- c->neg = !b->neg;
- return status;
- }
- else if (BC_NUM_ZERO(b)) return bc_num_copy(c, a);
-
- aneg = a->neg;
- bneg = b->neg;
-
- a->neg = b->neg = false;
-
- cmp = bc_num_compare(a, b);
-
- a->neg = aneg;
- b->neg = bneg;
-
- if (!cmp) {
- bc_num_zero(c);
- return BC_STATUS_SUCCESS;
- }
- else if (cmp > 0) {
- neg = sub ? a->neg : !a->neg;
- minuend = a;
- subtrahend = b;
- }
- else {
- neg = sub ? !b->neg : b->neg;
- minuend = b;
- subtrahend = a;
- }
-
- status = bc_num_copy(c, minuend);
-
- if (status) return status;
-
- c->neg = neg;
-
- if (c->rdx < subtrahend->rdx) {
- status = bc_num_extend(c, subtrahend->rdx - c->rdx);
- if (status) return status;
- start = 0;
- }
- else start = c->rdx - subtrahend->rdx;
-
- for (i = 0; i < subtrahend->len; ++i) {
-
- c->num[i + start] -= subtrahend->num[i];
-
- for (j = 0; c->num[i + j + start] < 0;) {
-
- c->num[i + j + start] += 10;
- ++j;
-
- if (j >= c->len - start) return BC_STATUS_MATH_OVERFLOW;
-
- c->num[i + j + start] -= 1;
- }
- }
-
- // Remove leading zeros.
- while (c->len > c->rdx && !c->num[c->len - 1]) --c->len;
-
- return status;
-}
-
-BcStatus bc_num_alg_m(BcNum *a, BcNum *b, BcNum *c, size_t scale) {
-
- BcStatus status;
- BcDigit carry;
- size_t i;
- size_t j;
- size_t len;
-
- if (BC_NUM_ZERO(a) || BC_NUM_ZERO(b)) {
- bc_num_zero(c);
- return BC_STATUS_SUCCESS;
- }
- else if (BC_NUM_ONE(a)) {
- status = bc_num_copy(c, b);
- if (a->neg) c->neg = !c->neg;
- return status;
- }
- else if (BC_NUM_ONE(b)) {
- status = bc_num_copy(c, a);
- if (b->neg) c->neg = !c->neg;
- return status;
- }
-
- scale = maxof(scale, a->rdx);
- scale = maxof(scale, b->rdx);
- c->rdx = a->rdx + b->rdx;
-
- memset(c->num, 0, sizeof(BcDigit) * c->cap);
- c->len = 0;
-
- carry = 0;
- len = 0;
-
- for (i = 0; i < b->len; ++i) {
-
- for (j = 0; j < a->len; ++j) {
-
- c->num[i + j] += a->num[j] * b->num[i] + carry;
-
- carry = c->num[i + j] / 10;
- c->num[i + j] %= 10;
- }
-
- if (carry) {
- c->num[i + j] += carry;
- carry = 0;
- len = maxof(len, i + j + 1);
- }
- else len = maxof(len, i + j);
- }
-
- c->len = maxof(len, c->rdx);
-
- c->neg = !a->neg != !b->neg;
-
- if (scale < c->rdx) status = bc_num_trunc(c, c->rdx - scale);
- else status = BC_STATUS_SUCCESS;
-
- // Remove leading zeros.
- while (c->len > c->rdx && !c->num[c->len - 1]) --c->len;
-
- return status;
-}
-
-BcStatus bc_num_alg_d(BcNum *a, BcNum *b, BcNum *c, size_t scale) {
-
- BcStatus status;
- BcDigit *ptr;
- BcDigit *bptr;
- size_t len;
- size_t end;
- size_t i;
- BcNum copy;
-
- if (BC_NUM_ZERO(b)) return BC_STATUS_MATH_DIVIDE_BY_ZERO;
- else if (BC_NUM_ZERO(a)) {
- bc_num_zero(c);
- return BC_STATUS_SUCCESS;
- }
- else if (BC_NUM_ONE(b)) {
- status = bc_num_copy(c, a);
- if (b->neg) c->neg = !c->neg;
- status = bc_num_extend(c, scale);
- return status;
- }
-
- status = bc_num_init(&copy, a->len + b->rdx + scale + 1);
-
- if (status) return status;
-
- status = bc_num_copy(&copy, a);
-
- if (status) goto err;
-
- len = b->len;
-
- if (len > copy.len) {
-
- status = bc_num_expand(&copy, len + 2);
-
- if (status) goto err;
-
- status = bc_num_extend(&copy, len - copy.len);
-
- if (status) goto err;
- }
-
- if (b->rdx > copy.rdx) {
- status = bc_num_extend(&copy, b->rdx - copy.rdx);
- if (status) goto err;
- }
-
- copy.rdx -= b->rdx;
-
- if (scale > copy.rdx) {
- status = bc_num_extend(&copy, scale - copy.rdx);
- if (status) goto err;
- }
-
- if (b->rdx == b->len) {
-
- bool zero;
-
- zero = true;
-
- for (i = 0; zero && i < len; ++i) zero = b->num[len - i - 1] == 0;
-
- if (i == len) return BC_STATUS_MATH_DIVIDE_BY_ZERO;
-
- len -= i - 1;
- }
-
- if (copy.cap == copy.len) {
- status = bc_num_expand(&copy, copy.len + 1);
- if (status) goto err;
- }
-
- // We want an extra zero in front to make things simpler.
- copy.num[copy.len] = 0;
- ++copy.len;
-
- end = copy.len - len;
-
- status = bc_num_expand(c, copy.len);
-
- if (status) goto err;
-
- bc_num_zero(c);
- c->rdx = copy.rdx;
- c->len = copy.len;
-
- bptr = b->num;
-
- for (i = end - 1; i < end; --i) {
-
- size_t j;
- size_t k;
- BcDigit quotient;
-
- ptr = copy.num + i;
-
- quotient = 0;
-
- while (bc_num_compareArrays(ptr, bptr, len) >= 0) {
-
- for (j = 0; j < len; ++j) {
-
- ptr[j] -= bptr[j];
-
- k = j;
-
- while (ptr[k] < 0) {
-
- ptr[k] += 10;
- ++k;
-
- if (k > len) return BC_STATUS_MATH_OVERFLOW;
-
- ptr[k] -= 1;
- }
- }
-
- ++quotient;
- }
-
- c->num[i] = quotient;
- }
-
- c->neg = !a->neg != !b->neg;
-
- // Remove leading zeros.
- while (c->len > c->rdx && !c->num[c->len - 1]) --c->len;
-
- if (c->rdx > scale) status = bc_num_trunc(c, c->rdx - scale);
-
-err:
-
- bc_num_free(&copy);
-
- return status;
-}
-
-BcStatus bc_num_alg_mod(BcNum *a, BcNum *b, BcNum *c, size_t scale) {
-
- BcStatus status;
- BcNum c1;
- BcNum c2;
- size_t len;
-
- len = a->len + b->len + scale;
-
- status = bc_num_init(&c1, len);
-
- if (status) return status;
-
- status = bc_num_init(&c2, len);
-
- if (status) goto c2_err;
-
- status = bc_num_div(a, b, &c1, scale);
-
- if (status) goto err;
-
- c->rdx = maxof(scale + b->rdx, a->rdx);
-
- status = bc_num_mul(&c1, b, &c2, scale);
-
- if (status) goto err;
-
- status = bc_num_sub(a, &c2, c, scale);
-
-err:
-
- bc_num_free(&c2);
-
-c2_err:
-
- bc_num_free(&c1);
-
- return status;
-}
-
-BcStatus bc_num_alg_p(BcNum *a, BcNum *b, BcNum *c, size_t scale) {
-
- BcStatus status;
- BcNum copy;
- BcNum one;
- long pow;
- unsigned long upow;
- size_t i;
- size_t powrdx;
- size_t resrdx;
- bool neg;
- bool zero;
-
- if (b->rdx) return BC_STATUS_MATH_NON_INTEGER;
-
- status = bc_num_long(b, &pow);
-
- if (status) return status;
-
- if (pow == 0) {
- bc_num_one(c);
- return BC_STATUS_SUCCESS;
- }
- else if (BC_NUM_ZERO(a)) {
- bc_num_zero(c);
- return BC_STATUS_SUCCESS;
- }
- else if (pow == 1) {
- return bc_num_copy(c, a);
- }
- else if (pow == -1) {
-
- status = bc_num_init(&one, BC_NUM_DEF_SIZE);
-
- if (status) return status;
-
- bc_num_one(&one);
-
- status = bc_num_div(&one, a, c, scale);
-
- bc_num_free(&one);
-
- return status;
- }
- else if (pow < 0) {
- neg = true;
- upow = -pow;
- }
- else {
- neg = false;
- upow = pow;
- scale = minof(a->rdx * upow, maxof(scale, a->rdx));
- }
-
- status = bc_num_init(&copy, a->len);
-
- if (status) return status;
-
- status = bc_num_copy(&copy, a);
-
- if (status) goto err;
-
- powrdx = a->rdx;
-
- while (!(upow & 1)) {
-
- powrdx <<= 1;
-
- status = bc_num_mul(&copy, &copy, &copy, powrdx);
-
- if (status) goto err;
-
- upow >>= 1;
- }
-
- status = bc_num_copy(c, &copy);
-
- if (status) goto err;
-
- resrdx = powrdx;
- upow >>= 1;
-
- while (upow != 0) {
-
- powrdx <<= 1;
-
- status = bc_num_mul(&copy, &copy, &copy, powrdx);
-
- if (status) goto err;
-
- if (upow & 1) {
- resrdx += powrdx;
- bc_num_mul(c, &copy, c, resrdx);
- }
-
- upow >>= 1;
- }
-
- if (neg) {
-
- status = bc_num_init(&one, BC_NUM_DEF_SIZE);
-
- if (status) goto err;
-
- bc_num_one(&one);
-
- status = bc_num_div(&one, c, c, scale);
-
- bc_num_free(&one);
-
- if (status) goto err;
- }
-
- if (c->rdx > scale) {
- status = bc_num_trunc(c, c->rdx - scale);
- if (status) goto err;
- }
-
- for (zero = true, i = 0; zero && i < c->len; ++i) zero = c->num[i] == 0;
-
- if (zero) bc_num_zero(c);
-
-err:
-
- bc_num_free(&copy);
-
- return status;
-}
-
-BcStatus bc_num_sqrt_newton(BcNum *a, BcNum *b, size_t scale) {
-
- BcStatus status;
- BcNum num1;
- BcNum num2;
- BcNum two;
- BcNum *x0;
- BcNum *x1;
- BcNum *temp;
- size_t pow;
- BcNum f;
- BcNum fprime;
- size_t len;
- size_t digits;
- size_t resrdx;
- int cmp;
-
- if (BC_NUM_ZERO(a)) {
- bc_num_zero(b);
- return BC_STATUS_SUCCESS;
- }
- else if (BC_NUM_POS_ONE(a)) {
- bc_num_one(b);
- return bc_num_extend(b, scale);
- }
- else if (a->neg) return BC_STATUS_MATH_NEG_SQRT;
-
- memset(b->num, 0, b->cap * sizeof(BcDigit));
-
- scale = maxof(scale, a->rdx) + 1;
-
- len = a->len;
-
- status = bc_num_init(&num1, len);
-
- if (status) return status;
-
- status = bc_num_init(&num2, num1.len);
-
- if (status) goto num2_err;
-
- status = bc_num_init(&two, BC_NUM_DEF_SIZE);
-
- if (status) goto two_err;
-
- bc_num_one(&two);
- two.num[0] = 2;
-
- len += scale;
-
- status = bc_num_init(&f, len);
-
- if (status) goto f_err;
-
- status = bc_num_init(&fprime, len + scale);
-
- if (status) goto fprime_err;
-
- x0 = &num1;
- x1 = &num2;
-
- bc_num_one(x0);
-
- pow = a->len - a->rdx;
-
- if (pow) {
-
- if (pow & 1) {
- x0->num[0] = 2;
- pow -= 1;
- }
- else {
- x0->num[0] = 6;
- pow -= 2;
- }
-
- status = bc_num_extend(x0, pow);
-
- if (status) goto err;
- }
-
- cmp = 1;
- x0->rdx = 0;
- digits = 0;
- resrdx = scale + 1;
- len = (x0->len - x0->rdx) + resrdx;
-
- while (cmp && digits <= len) {
-
- status = bc_num_mul(x0, x0, &f, resrdx);
-
- if (status) goto err;
-
- status = bc_num_sub(&f, a, &f, resrdx);
-
- if (status) goto err;
-
- status = bc_num_mul(x0, &two, &fprime, resrdx);
-
- if (status) goto err;
-
- status = bc_num_div(&f, &fprime, &f, resrdx);
-
- if (status) goto err;
-
- status = bc_num_sub(x0, &f, x1, resrdx);
-
- if (status) goto err;
-
- cmp = bc_num_compareDigits(x1, x0, &digits);
-
- temp = x0;
- x0 = x1;
- x1 = temp;
- }
-
- status = bc_num_copy(b, x0);
-
- if (status) goto err;
-
- --scale;
-
- if (b->rdx > scale) status = bc_num_trunc(b, b->rdx - scale);
- else if (b->rdx < scale) status = bc_num_extend(b, scale - b->rdx);
-
-err:
-
- bc_num_free(&fprime);
-
-fprime_err:
-
- bc_num_free(&f);
-
-f_err:
-
- bc_num_free(&two);
-
-two_err:
-
- bc_num_free(&num2);
-
-num2_err:
-
- bc_num_free(&num1);
-
- return status;
-}
-
-BcStatus bc_num_binary(BcNum *a, BcNum *b, BcNum *c, size_t scale,
- BcNumBinaryFunc op, size_t req)
-{
- BcStatus status;
- BcNum num2;
- BcNum *ptr_a;
- BcNum *ptr_b;
- bool init;
-
- if (!a || !b || !c || !op) return BC_STATUS_INVALID_PARAM;
-
- init = false;
-
- if (c == a) {
- memcpy(&num2, c, sizeof(BcNum));
- ptr_a = &num2;
- init = true;
- }
- else ptr_a = a;
-
- if (c == b) {
-
- if (c == a) {
- ptr_b = ptr_a;
- }
- else {
- memcpy(&num2, c, sizeof(BcNum));
- ptr_b = &num2;
- init = true;
- }
- }
- else ptr_b = b;
-
- if (init) status = bc_num_init(c, req);
- else status = bc_num_expand(c, req);
-
- if (status) return status;
-
- status = op(ptr_a, ptr_b, c, scale);
-
- if (c == a || c == b) bc_num_free(&num2);
-
- return status;
-}
-
-BcStatus bc_num_unary(BcNum *a, BcNum *b, size_t scale,
- BcNumUnaryFunc op, size_t req)
-{
- BcStatus status;
- BcNum a2;
- BcNum *ptr_a;
-
- if (!a || !b || !op) return BC_STATUS_INVALID_PARAM;
-
- if (b == a) {
-
- memcpy(&a2, b, sizeof(BcNum));
- ptr_a = &a2;
-
- status = bc_num_init(b, req);
- }
- else {
- ptr_a = a;
- status = bc_num_expand(b, req);
- }
-
- if (status) return status;
-
- status = op(ptr_a, b, scale);
-
- if (b == a) bc_num_free(&a2);
-
- return status;
-}
-
-bool bc_num_strValid(const char *val, size_t base) {
-
- size_t len;
- size_t i;
- BcDigit c;
- BcDigit b;
- bool radix;
-
- radix = false;
-
- len = strlen(val);
-
- if (!len) return true;
-
- if (base <= 10) {
-
- b = base + '0';
-
- for (i = 0; i < len; ++i) {
-
- c = val[i];
-
- if (c == '.') {
-
- if (radix) return false;
-
- radix = true;
- continue;
- }
-
- if (c < '0' || c >= b) return false;
- }
- }
- else {
-
- b = base - 9 + 'A';
-
- for (i = 0; i < len; ++i) {
-
- c = val[i];
-
- if (c == '.') {
-
- if (radix) return false;
-
- radix = true;
- continue;
- }
-
- if (!((c >= '0' && c <= '9') || (c >= 'A' && c <= b))) return false;
- }
- }
-
- return true;
-}
-
-BcStatus bc_num_parseDecimal(BcNum *n, const char *val) {
-
- BcStatus status;
- size_t len;
- size_t i;
- const char *ptr;
- size_t radix;
- size_t end;
- BcDigit *num;
-
- for (i = 0; val[i] == '0'; ++i);
-
- val += i;
-
- len = strlen(val);
-
- bc_num_zero(n);
-
- if (len) {
-
- bool zero;
-
- zero = true;
-
- for (i = 0; zero && i < len; ++i) {
- if (val[i] != '0' && val[i] != '.') zero = false;
- }
-
- if (zero) {
- memset(n->num, 0, sizeof(BcDigit) * n->cap);
- n->neg = false;
- return BC_STATUS_SUCCESS;
- }
-
- status = bc_num_expand(n, len);
-
- if (status) return status;
-
- }
- else {
- memset(n->num, 0, sizeof(BcDigit) * n->cap);
- n->neg = false;
- return BC_STATUS_SUCCESS;
- }
-
- ptr = strchr(val, '.');
-
- if (ptr) {
- radix = ptr - val;
- ++ptr;
- n->rdx = (val + len) - ptr;
- }
- else {
- radix = len;
- n->rdx = 0;
- }
-
- end = n->rdx - 1;
-
- for (i = 0; i < n->rdx; ++i) {
- n->num[i] = BC_NUM_FROM_CHAR(ptr[end - i]);
- n->len += 1;
- }
-
- if (i >= len) return BC_STATUS_SUCCESS;
-
- num = n->num + n->len;
- end = radix - 1;
-
- for (i = 0; i < radix; ++i) {
- num[i] = BC_NUM_FROM_CHAR(val[end - i]);
- ++n->len;
- }
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_num_parseBase(BcNum *n, const char *val, BcNum *base) {
-
- BcStatus status;
- BcNum temp;
- BcNum mult;
- BcNum result;
- size_t i;
- size_t len;
- size_t digits;
- BcDigit c;
- bool zero;
-
- len = strlen(val);
-
- zero = true;
-
- for (i = 0; zero && i < len; ++i) {
- c = val[i];
- zero = (c == '.' || c == '0');
- }
-
- if (zero) {
- bc_num_zero(n);
- return BC_STATUS_SUCCESS;
- }
-
- status = bc_num_init(&temp, BC_NUM_DEF_SIZE);
-
- if (status) return status;
-
- status = bc_num_init(&mult, BC_NUM_DEF_SIZE);
-
- if (status) goto mult_err;
-
- bc_num_zero(n);
-
- for (i = 0; i < len && (c = val[i]) != '.'; ++i) {
-
- long v;
-
- status = bc_num_mul(n, base, &mult, 0);
-
- if (status) goto int_err;
-
- if (c <= '9') v = c - '0';
- else v = c - 'A' + 10;
-
- status = bc_num_long2num(&temp, v);
-
- if (status) goto int_err;
-
- status = bc_num_add(&mult, &temp, n, 0);
-
- if (status) goto int_err;
- }
-
- if (i == len) c = val[i];
-
- if (c == '\0') goto int_err;
-
- assert(c == '.');
-
- status = bc_num_init(&result, base->len);
-
- if (status) goto int_err;
-
- ++i;
- bc_num_zero(&result);
- bc_num_one(&mult);
-
- for (digits = 0; i < len; ++i, ++digits) {
-
- c = val[i];
-
- status = bc_num_mul(&result, base, &result, 0);
-
- if (status) goto err;
-
- status = bc_num_long2num(&temp, (long) c);
-
- if (status) goto err;
-
- status = bc_num_add(&result, &temp, &result, 0);
-
- if (status) goto err;
-
- status = bc_num_mul(&mult, base, &mult, 0);
-
- if (status) goto err;
- }
-
- status = bc_num_div(&result, &mult, &result, digits);
-
- if (status) goto err;
-
- status = bc_num_add(n, &result, n, 0);
-
-err:
-
- bc_num_free(&result);
-
-int_err:
-
- bc_num_free(&mult);
-
-mult_err:
-
- bc_num_free(&temp);
-
- return status;
-}
-
-BcStatus bc_num_printRadix(size_t *nchars, FILE *f) {
-
- if (*nchars + 1 >= BC_NUM_PRINT_WIDTH) {
- if (fputc('\\', f) == EOF) return BC_STATUS_IO_ERR;
- if (fputc('\n', f) == EOF) return BC_STATUS_IO_ERR;
- *nchars = 0;
- }
-
- if (fputc('.', f) == EOF) return BC_STATUS_IO_ERR;
-
- *nchars = *nchars + 1;
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_num_printDigits(unsigned long num, size_t width,
- size_t *nchars, FILE *f)
-{
- if (*nchars + width + 1 >= BC_NUM_PRINT_WIDTH) {
- if (fputc('\\', f) == EOF) return BC_STATUS_IO_ERR;
- if (fputc('\n', f) == EOF) return BC_STATUS_IO_ERR;
- *nchars = 0;
- }
- else {
- if (fputc(' ', f) == EOF) return BC_STATUS_IO_ERR;
- ++(*nchars);
- }
-
- if (fprintf(f, "%0*lu", (unsigned int) width, num) < 0)
- return BC_STATUS_IO_ERR;
-
- *nchars = *nchars + width;
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_num_printHex(unsigned long num, size_t width,
- size_t *nchars, FILE *f)
-{
- if (*nchars + width >= BC_NUM_PRINT_WIDTH) {
- if (fputc('\\', f) == EOF) return BC_STATUS_IO_ERR;
- if (fputc('\n', f) == EOF) return BC_STATUS_IO_ERR;
- *nchars = 0;
- }
-
- if (fputc(bc_num_hex_digits[num], f) == EOF) return BC_STATUS_IO_ERR;
-
- *nchars = *nchars + width;
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_num_printDecimal(BcNum *n, FILE *f) {
-
- BcStatus status;
- size_t i;
- size_t nchars;
-
- nchars = 0;
-
- if (n->neg) {
- if (fputc('-', f) == EOF) return BC_STATUS_IO_ERR;
- ++nchars;
- }
-
- status = BC_STATUS_SUCCESS;
-
- for (i = n->len - 1; !status && i >= n->rdx && i < n->len; --i)
- status = bc_num_printHex(n->num[i], 1, &nchars, f);
-
- if (status || !n->rdx) return status;
-
- status = bc_num_printRadix(&nchars, f);
-
- if (status) return status;
-
- for (; !status && i < n->len; --i)
- status = bc_num_printHex(n->num[i], 1, &nchars, f);
-
- return status;
-}
-
-BcStatus bc_num_printBase(BcNum *n, BcNum *base, size_t base_t, FILE* f) {
-
- BcStatus status;
- BcVec stack;
- BcNum intp;
- BcNum fracp;
- BcNum digit;
- BcNum frac_len;
- size_t nchars;
- size_t width;
- BcNumDigitFunc print;
- size_t i;
-
- nchars = 0;
-
- if (n->neg) {
- if (fputc('-', f) == EOF) return BC_STATUS_IO_ERR;
- ++nchars;
- }
-
- if (base_t <= 16) {
- width = 1;
- print = bc_num_printHex;
- }
- else {
- width = (size_t) floor(log10((double) (base_t - 1)) + 1.0);
- print = bc_num_printDigits;
- }
-
- status = bc_vec_init(&stack, sizeof(unsigned long), NULL);
-
- if (status) return status;
-
- status = bc_num_init(&intp, n->len);
-
- if (status) goto int_err;
-
- status = bc_num_init(&fracp, n->rdx);
-
- if (status) goto frac_err;
-
- status = bc_num_init(&digit, width);
-
- if (status) goto digit_err;
-
- status = bc_num_copy(&intp, n);
-
- if (status) goto frac_len_err;
-
- status = bc_num_truncate(&intp);
-
- if (status) goto frac_len_err;
-
- status = bc_num_sub(n, &intp, &fracp, 0);
-
- if (status) goto frac_len_err;
-
- while (!BC_NUM_ZERO(&intp)) {
-
- unsigned long dig;
-
- status = bc_num_mod(&intp, base, &digit, 0);
-
- if (status) goto frac_len_err;
-
- status = bc_num_ulong(&digit, &dig);
-
- if (status) goto frac_len_err;
-
- status = bc_vec_push(&stack, &dig);
-
- if (status) goto frac_len_err;
-
- status = bc_num_div(&intp, base, &intp, 0);
-
- if (status) goto frac_len_err;
- }
-
- for (i = 0; i < stack.len; ++i) {
-
- unsigned long *ptr;
-
- ptr = bc_vec_item_rev(&stack, i);
-
- status = print(*ptr, width, &nchars, f);
-
- if (status) goto frac_len_err;
- }
-
- if (!n->rdx) goto frac_len_err;
-
- status = bc_num_printRadix(&nchars, f);
-
- if (status) goto frac_len_err;
-
- status = bc_num_init(&frac_len, n->len - n->rdx);
-
- if (status) goto frac_len_err;
-
- bc_num_one(&frac_len);
-
- while (frac_len.len <= n->len) {
-
- unsigned long fdigit;
-
- status = bc_num_mul(&fracp, base, &fracp, n->rdx);
-
- if (status) goto err;
-
- status = bc_num_ulong(&fracp, &fdigit);
-
- if (status) goto err;
-
- status = bc_num_ulong2num(&intp, fdigit);
-
- if (status) goto err;
-
- status = bc_num_sub(&fracp, &intp, &fracp, 0);
-
- if (status) goto err;
-
- status = print(fdigit, width, &nchars, f);
-
- if (status) goto err;
-
- status = bc_num_mul(&frac_len, base, &frac_len, 0);
-
- if (status) goto err;
- }
-
-err:
-
- bc_num_free(&frac_len);
-
-frac_len_err:
-
- bc_num_free(&digit);
-
-digit_err:
-
- bc_num_free(&fracp);
-
-frac_err:
-
- bc_num_free(&intp);
-
-int_err:
-
- bc_vec_free(&stack);
-
- return status;
-}
-
-BcStatus bc_num_init(BcNum *n, size_t request) {
-
- if (!n) return BC_STATUS_INVALID_PARAM;
-
- memset(n, 0, sizeof(BcNum));
-
- request = request >= BC_NUM_DEF_SIZE ? request : BC_NUM_DEF_SIZE;
-
- n->num = malloc(request);
-
- if (!n->num) return BC_STATUS_MALLOC_FAIL;
-
- n->cap = request;
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_num_expand(BcNum *n, size_t request) {
-
- if (!n || !request) return BC_STATUS_INVALID_PARAM;
-
- if (request > n->cap) {
-
- BcDigit *temp;
-
- temp = realloc(n->num, request);
-
- if (!temp) return BC_STATUS_MALLOC_FAIL;
-
- memset(temp + n->cap, 0, sizeof(char) * (request - n->cap));
-
- n->num = temp;
- n->cap = request;
- }
-
- return BC_STATUS_SUCCESS;
-}
-
-void bc_num_free(void *num) {
-
- BcNum *n;
-
- if (!num) return;
-
- n = (BcNum*) num;
-
- if (n->num) free(n->num);
-
- memset(n, 0, sizeof(BcNum));
-}
-
-BcStatus bc_num_copy(void *dest, void *src) {
-
- BcStatus status;
-
- BcNum *d;
- BcNum *s;
-
- if (!dest || !src) return BC_STATUS_INVALID_PARAM;
-
- if (dest == src) return BC_STATUS_SUCCESS;
-
- d = (BcNum*) dest;
- s = (BcNum*) src;
-
- status = bc_num_expand(d, s->cap);
-
- if (status) return status;
-
- d->len = s->len;
- d->neg = s->neg;
- d->rdx = s->rdx;
-
- memcpy(d->num, s->num, sizeof(char) * d->len);
- memset(d->num + d->len, 0, sizeof(char) * (d->cap - d->len));
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_num_parse(BcNum *n, const char *val, BcNum *base, size_t base_t) {
-
- BcStatus status;
-
- if (!n || !val) return BC_STATUS_INVALID_PARAM;
-
- if (base_t < BC_NUM_MIN_BASE || base_t > BC_NUM_MAX_INPUT_BASE)
- return BC_STATUS_EXEC_INVALID_IBASE;
-
- if (!bc_num_strValid(val, base_t)) return BC_STATUS_MATH_INVALID_STRING;
-
- if (base_t == 10) status = bc_num_parseDecimal(n, val);
- else status = bc_num_parseBase(n, val, base);
-
- return status;
-}
-
-BcStatus bc_num_fprint(BcNum *n, BcNum *base, size_t base_t,
- bool newline, FILE *f)
-{
- BcStatus status;
-
- if (!n || !f) return BC_STATUS_INVALID_PARAM;
-
- if (base_t < BC_NUM_MIN_BASE || base_t > BC_NUM_MAX_OUTPUT_BASE)
- return BC_STATUS_EXEC_INVALID_OBASE;
-
- if (BC_NUM_ZERO(n)) {
- if (fputc('0', f) == EOF) return BC_STATUS_IO_ERR;
- status = BC_STATUS_SUCCESS;
- }
- else if (base_t == 10) status = bc_num_printDecimal(n, f);
- else status = bc_num_printBase(n, base, base_t, f);
-
- if (status) return status;
-
- if (newline) {
- if (fputc('\n', f) == EOF) return BC_STATUS_IO_ERR;
- }
-
- return status;
-}
-
-BcStatus bc_num_print(BcNum *n, BcNum *base, size_t base_t, bool newline) {
- return bc_num_fprint(n, base, base_t, newline, stdout);
-}
-
-BcStatus bc_num_long(BcNum *n, long *result) {
-
- size_t i;
- unsigned long temp;
- unsigned long prev;
- unsigned long pow;
-
- if (!n || !result) return BC_STATUS_INVALID_PARAM;
-
- temp = 0;
- pow = 1;
-
- for (i = n->rdx; i < n->len; ++i) {
-
- prev = temp;
-
- temp += n->num[i] * pow;
-
- pow *= 10;
-
- if (temp < prev) return BC_STATUS_MATH_OVERFLOW;
- }
-
- if (n->neg) temp = -temp;
-
- *result = temp;
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_num_ulong(BcNum *n, unsigned long *result) {
-
- size_t i;
- unsigned long prev;
- unsigned long pow;
-
- if (!n || !result) return BC_STATUS_INVALID_PARAM;
-
- if (n->neg) return BC_STATUS_MATH_NEGATIVE;
-
- *result = 0;
- pow = 1;
-
- for (i = n->rdx; i < n->len; ++i) {
-
- prev = *result;
-
- *result += n->num[i] * pow;
-
- pow *= 10;
-
- if (*result < prev) return BC_STATUS_MATH_OVERFLOW;
- }
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_num_long2num(BcNum *n, long val) {
-
- BcStatus status;
- size_t len;
- size_t i;
- BcDigit *ptr;
- BcDigit carry;
-
- if (!n) return BC_STATUS_INVALID_PARAM;
-
- bc_num_zero(n);
-
- if (!val) {
- memset(n->num, 0, sizeof(char) * n->cap);
- return BC_STATUS_SUCCESS;
- }
-
- carry = 0;
-
- if (val < 0) {
-
- if (val == LONG_MIN) {
- carry = 1;
- val += 1;
- }
-
- val = -val;
- n->neg = true;
- }
-
- len = (size_t) ceil(log10(((double) ULONG_MAX) + 1.0f));
-
- status = bc_num_expand(n, len);
-
- if (status) return status;
-
- ptr = n->num;
-
- for (i = 0; val; ++i) {
- ++n->len;
- ptr[i] = (char) (val % 10);
- val /= 10;
- }
-
- if (carry) ptr[i - 1] += carry;
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_num_ulong2num(BcNum *n, unsigned long val) {
-
- BcStatus status;
- size_t len;
- size_t i;
- BcDigit *ptr;
-
- if (!n) return BC_STATUS_INVALID_PARAM;
-
- bc_num_zero(n);
-
- if (!val) {
- memset(n->num, 0, sizeof(char) * n->cap);
- return BC_STATUS_SUCCESS;
- }
-
- len = (size_t) ceil(log10(((double) ULONG_MAX) + 1.0f));
-
- status = bc_num_expand(n, len);
-
- if (status) return status;
-
- ptr = n->num;
-
- for (i = 0; val; ++i) {
- ++n->len;
- ptr[i] = (char) (val % 10);
- val /= 10;
- }
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_num_truncate(BcNum *n) {
- if (!n) return BC_STATUS_INVALID_PARAM;
- return bc_num_trunc(n, n->rdx);
-}
-
-BcStatus bc_num_add(BcNum *a, BcNum *b, BcNum *result, size_t scale) {
-
- BcNumBinaryFunc op;
-
- (void) scale;
-
- if ((a->neg && b->neg) || (!a->neg && !b->neg)) op = bc_num_alg_a;
- else op = bc_num_alg_s;
-
- return bc_num_binary(a, b, result, false, op, a->len + b->len + 1);
-}
-
-BcStatus bc_num_sub(BcNum *a, BcNum *b, BcNum *result, size_t scale) {
-
- BcNumBinaryFunc op;
-
- (void) scale;
-
- if (a->neg && b->neg) op = bc_num_alg_s;
- else if (a->neg || b->neg) op = bc_num_alg_a;
- else op = bc_num_alg_s;
-
- return bc_num_binary(a, b, result, true, op, a->len + b->len + 1);
-}
-
-BcStatus bc_num_mul(BcNum *a, BcNum *b, BcNum *result, size_t scale) {
- return bc_num_binary(a, b, result, scale, bc_num_alg_m,
- a->len + b->len + scale + 1);
-}
-
-BcStatus bc_num_div(BcNum *a, BcNum *b, BcNum *result, size_t scale) {
- return bc_num_binary(a, b, result, scale, bc_num_alg_d,
- a->len + b->len + scale + 1);
-}
-
-BcStatus bc_num_mod(BcNum *a, BcNum *b, BcNum *result, size_t scale) {
- return bc_num_binary(a, b, result, scale, bc_num_alg_mod,
- a->len + b->len + scale + 1);
-}
-
-BcStatus bc_num_pow(BcNum *a, BcNum *b, BcNum *result, size_t scale) {
- return bc_num_binary(a, b, result, scale, bc_num_alg_p,
- (a->len + 1) * (b->len + 1));
-}
-
-BcStatus bc_num_sqrt(BcNum *a, BcNum *result, size_t scale) {
- return bc_num_unary(a, result, scale, bc_num_sqrt_newton,
- a->rdx + (a->len - a->rdx) * 2 + 1);
-}
-
-int bc_num_compare(BcNum *a, BcNum *b) {
- size_t digits;
- return bc_num_compareDigits(a, b, &digits);
-}
-
-void bc_num_zero(BcNum *n) {
-
- if (!n) return;
-
- memset(n->num, 0, n->cap * sizeof(char));
-
- n->neg = false;
- n->len = 0;
- n->rdx = 0;
-}
-
-void bc_num_one(BcNum *n) {
-
- if (!n) return;
-
- bc_num_zero(n);
-
- n->len = 1;
- n->num[0] = 1;
-}
-
-void bc_num_ten(BcNum *n) {
-
- if (!n) return;
-
- bc_num_zero(n);
-
- n->len = 2;
- n->num[0] = 0;
- n->num[1] = 1;
-}
-
-BcStatus bc_func_insert(BcFunc *func, char *name, bool var, BcVec *vec) {
-
- BcStatus status;
- BcAuto a;
- size_t i;
- BcAuto *ptr;
-
- if (!func || !name || !vec) return BC_STATUS_INVALID_PARAM;
-
- for (i = 0; i < func->params.len; ++i) {
- ptr = bc_vec_item(&func->params, i);
- if (!strcmp(name, ptr->name))
- return BC_STATUS_PARSE_DUPLICATE_LOCAL;
- }
-
- for (i = 0; i < func->autos.len; ++i) {
- ptr = bc_vec_item(&func->autos, i);
- if (!strcmp(name, ptr->name))
- return BC_STATUS_PARSE_DUPLICATE_LOCAL;
- }
-
- status = bc_auto_init(&a, name, var);
-
- if (status) return status;
-
- status = bc_vec_push(vec, &a);
-
- if (status) return status;
-
- return status;
-}
-
-BcStatus bc_func_init(BcFunc *func) {
-
- BcStatus status;
-
- if (!func) return BC_STATUS_INVALID_PARAM;
-
- status = bc_vec_init(&func->code, sizeof(uint8_t), NULL);
-
- if (status) return status;
-
- status = bc_vec_init(&func->params, sizeof(BcAuto), bc_auto_free);
-
- if (status) goto param_err;
-
- status = bc_vec_init(&func->autos, sizeof(BcAuto), bc_auto_free);
-
- if (status) goto auto_err;
-
- status = bc_vec_init(&func->labels, sizeof(size_t), NULL);
-
- if (status) goto label_err;
-
- return BC_STATUS_SUCCESS;
-
-label_err:
-
- bc_vec_free(&func->autos);
-
-auto_err:
-
- bc_vec_free(&func->params);
-
-param_err:
-
- bc_vec_free(&func->code);
-
- return status;
-}
-
-void bc_func_free(void *func) {
-
- BcFunc *f;
-
- f = (BcFunc*) func;
-
- if (f == NULL) return;
-
- bc_vec_free(&f->code);
- bc_vec_free(&f->params);
- bc_vec_free(&f->autos);
- bc_vec_free(&f->labels);
-}
-
-BcStatus bc_var_init(void *var) {
-
- if (!var) return BC_STATUS_INVALID_PARAM;
-
- return bc_num_init((BcVar*) var, BC_NUM_DEF_SIZE);
-}
-
-void bc_var_free(void *var) {
-
- BcVar *v;
-
- v = (BcVar*) var;
-
- if (v == NULL) return;
-
- bc_num_free(v);
-}
-
-BcStatus bc_array_init(void *array) {
-
- if (!array) return BC_STATUS_INVALID_PARAM;
-
- return bc_vec_init((BcArray*) array, sizeof(BcNum), bc_num_free);
-}
-
-BcStatus bc_array_copy(void *dest, void *src) {
-
- BcStatus status;
- size_t i;
- BcNum *dnum;
- BcNum *snum;
-
- BcArray *d;
- BcArray *s;
-
- d = (BcArray*) dest;
- s = (BcArray*) src;
-
- if (!d || !s || d == s || d->size != s->size || d->dtor != s->dtor)
- return BC_STATUS_INVALID_PARAM;
-
- while (d->len) {
- status = bc_vec_pop(d);
- if (status) return status;
- }
-
- status = bc_vec_expand(d, s->cap);
-
- if (status) return status;
-
- d->len = s->len;
-
- for (i = 0; i < s->len; ++i) {
-
- dnum = bc_vec_item(d, i);
- snum = bc_vec_item(s, i);
-
- if (!dnum || !snum) return BC_STATUS_VEC_OUT_OF_BOUNDS;
-
- status = bc_num_init(dnum, snum->len);
-
- if (status) return status;
-
- status = bc_num_copy(dnum, snum);
-
- if (status) {
- bc_num_free(dnum);
- return status;
- }
- }
-
- return status;
-}
-
-BcStatus bc_array_zero(BcArray *a) {
-
- BcStatus status;
-
- status = BC_STATUS_SUCCESS;
-
- while (!status && a->len) status = bc_vec_pop(a);
-
- return status;
-}
-
-BcStatus bc_array_expand(BcArray *a, size_t len) {
-
- BcStatus status;
-
- status = BC_STATUS_SUCCESS;
-
- while (len > a->len) {
-
- BcNum num;
-
- status = bc_num_init(&num, BC_NUM_DEF_SIZE);
-
- if (status) return status;
-
- bc_num_zero(&num);
-
- status = bc_vec_push(a, &num);
-
- if (status) {
- bc_num_free(&num);
- return status;
- }
- }
-
- return status;
-}
-
-void bc_array_free(void *array) {
-
- BcArray *a;
-
- a = (BcArray*) array;
-
- if (a == NULL) return;
-
- bc_vec_free(a);
-}
-
-void bc_string_free(void *string) {
-
- char *s;
-
- s = *((char**) string);
-
- free(s);
-}
-
-int bc_entry_cmp(void *entry1, void *entry2) {
-
- BcEntry *e1;
- BcEntry *e2;
- int cmp;
-
- e1 = (BcEntry*) entry1;
- e2 = (BcEntry*) entry2;
-
- if (!strcmp(e1->name, bc_lang_func_main)) {
- if (!strcmp(e2->name, bc_lang_func_main)) cmp = 0;
- else cmp = -1;
- }
- else if (!strcmp(e1->name, bc_lang_func_read)) {
- if (!strcmp(e2->name, bc_lang_func_main)) cmp = 1;
- else if (!strcmp(e2->name, bc_lang_func_read)) cmp = 0;
- else cmp = -1;
- }
- else if (!strcmp(e2->name, bc_lang_func_main)) cmp = 1;
- else cmp = strcmp(e1->name, e2->name);
-
- return cmp;
-}
-
-void bc_entry_free(void *entry) {
-
- BcEntry *e;
-
- if (!entry) return;
-
- e = (BcEntry*) entry;
-
- free(e->name);
-}
-
-BcStatus bc_auto_init(void *auto1, char *name, bool var) {
-
- BcStatus status;
- BcAuto *a;
-
- if (!auto1) return BC_STATUS_INVALID_PARAM;
-
- a = (BcAuto*) auto1;
-
- a->var = var;
- a->name = name;
-
- if (var) status = bc_num_init(&a->data.num, BC_NUM_DEF_SIZE);
- else status = bc_vec_init(&a->data.array, sizeof(BcNum), bc_num_free);
-
- return status;
-}
-
-void bc_auto_free(void *auto1) {
-
- BcAuto *a;
-
- if (!auto1) return;
-
- a = (BcAuto*) auto1;
-
- if (a->name) free(a->name);
-
- if (a->var) bc_num_free(&a->data.num);
- else bc_vec_free(&a->data.array);
-}
-
-void bc_result_free(void *result) {
-
- BcResult *r;
-
- if (!result) return;
-
- r = (BcResult*) result;
-
- switch (r->type) {
-
- case BC_RESULT_INTERMEDIATE:
- case BC_RESULT_SCALE:
- {
- bc_num_free(&r->data.num);
- break;
- }
-
- case BC_RESULT_VAR:
- case BC_RESULT_ARRAY:
- {
- if (r->data.id.name) free(r->data.id.name);
- break;
- }
-
- default:
- {
- // Do nothing.
- break;
- }
- }
-}
-
-void bc_constant_free(void *constant) {
-
- char *c;
-
- if (!constant) return;
-
- c = *((char**) constant);
-
- free(c);
-}
-
-long bc_io_frag(char *buf, long len, int term, BcIoGetc bcgetc, void *ctx) {
-
- long i;
- int c;
-
- if (!buf || len < 0 || !bcgetc) return -1;
-
- for (c = (~term) | 1, i = 0; i < len; i++) {
-
- if (c == (int) '\0' || c == term || (c = bcgetc(ctx)) == EOF) {
- buf[i] = '\0';
- break;
- }
-
- buf[i] = (char) c;
- }
-
- return i;
-}
-
-int bc_io_xfgetc(void *ctx) {
- return fgetc((FILE *) ctx);
-}
-
-long bc_io_fgets(char * buf, int n, FILE* fp) {
-
- long len;
-
- if (!buf) return -1;
-
- if (n == 1) {
- buf[0] = '\0';
- return 0;
- }
-
- if (n < 1 || !fp) return -1;
-
- len = bc_io_frag(buf, n - 1, (int) '\n', bc_io_xfgetc, fp);
-
- if (len >= 0) buf[len] = '\0';
-
- return len;
-}
-
-BcStatus bc_io_fgetline(char** p, size_t *n, FILE* fp) {
-
- size_t mlen, slen, dlen, len;
- char *s;
- char *t;
-
- if (!p || !n || !fp) return BC_STATUS_INVALID_PARAM;
-
- if (!p) {
-
- char blk[64];
-
- for (slen = 0; ; slen += 64) {
-
- len = (size_t) bc_io_frag(blk, 64, (int) '\n', bc_io_xfgetc, fp);
-
- if (len != 64 || blk[len - 1] == '\n' || blk[len - 1] == '\0')
- return slen + len;
- }
- }
-
- mlen = 8;
- slen = 0;
-
- s = *p;
-
- for (;;) {
-
- mlen += mlen;
-
- if ((t = realloc(s, mlen)) == NULL) break;
-
- s = t;
- dlen = mlen - slen - 1;
-
- len = (size_t) bc_io_frag(s + slen, dlen, (int) '\n', bc_io_xfgetc, fp);
-
- slen += len;
-
- if (len < dlen || t[slen - 1] == '\n' || t[slen - 1] == '\0') {
-
- s[slen] = '\0';
- *p = s;
- *n = slen;
-
- return BC_STATUS_SUCCESS;
- }
- }
-
- return BC_STATUS_IO_ERR;
-}
-
-BcStatus bc_io_fread(const char *path, char** buf) {
-
- BcStatus status;
- FILE* f;
- size_t size;
- size_t read;
-
- f = fopen(path, "r");
-
- if (!f) return BC_STATUS_EXEC_FILE_ERR;
-
- fseek(f, 0, SEEK_END);
- size = ftell(f);
-
- fseek(f, 0, SEEK_SET);
-
- *buf = malloc(size + 1);
-
- if (!*buf) {
- status = BC_STATUS_MALLOC_FAIL;
- goto malloc_err;
- }
-
- read = fread(*buf, 1, size, f);
-
- if (read != size) {
- status = BC_STATUS_IO_ERR;
- goto read_err;
- }
-
- (*buf)[size] = '\0';
-
- fclose(f);
-
- return BC_STATUS_SUCCESS;
-
-read_err:
-
- free(*buf);
-
-malloc_err:
-
- fclose(f);
-
- return status;
-}
-
-BcStatus bc_lex_whitespace(BcLex *lex, BcLexToken *token) {
-
- char c;
-
- token->type = BC_LEX_WHITESPACE;
-
- c = lex->buffer[lex->idx];
-
- while ((isspace(c) && c != '\n') || c == '\\') {
- ++lex->idx;
- c = lex->buffer[lex->idx];
- }
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_lex_string(BcLex *lex, BcLexToken *token) {
-
- const char *start;
- uint32_t newlines;
- size_t len;
- size_t i, j;
- char c;
-
- newlines = 0;
-
- token->type = BC_LEX_STRING;
-
- i = lex->idx;
- c = lex->buffer[i];
-
- while (c != '"' && c != '\0') {
- if (c == '\n') ++newlines;
- c = lex->buffer[++i];
- }
-
- if (c == '\0') {
- lex->idx = i;
- return BC_STATUS_LEX_NO_STRING_END;
- }
-
- len = i - lex->idx;
-
- token->string = malloc(len + 1);
-
- if (!token->string) return BC_STATUS_MALLOC_FAIL;
-
- start = lex->buffer + lex->idx;
-
- for (j = 0; j < len; ++j) token->string[j] = start[j];
-
- token->string[len] = '\0';
-
- lex->idx = i + 1;
- lex->line += newlines;
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_lex_comment(BcLex *lex, BcLexToken *token) {
-
- uint32_t newlines;
- bool end;
- size_t i;
- const char *buffer;
- char c;
-
- newlines = 0;
-
- token->type = BC_LEX_WHITESPACE;
-
- ++lex->idx;
-
- i = lex->idx;
- buffer = lex->buffer;
-
- end = false;
-
- while (!end) {
-
- c = buffer[i];
-
- while (c != '*' && c != '\0') {
- if (c == '\n') ++newlines;
- c = buffer[++i];
- }
-
- if (c == '\0' || buffer[i + 1] == '\0') {
- lex->idx = i;
- return BC_STATUS_LEX_NO_COMMENT_END;
- }
-
- end = buffer[i + 1] == '/';
- i += end ? 0 : 1;
- }
-
- lex->idx = i + 2;
- lex->line += newlines;
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_lex_number(BcLex *lex, BcLexToken *token, char start) {
-
- const char *buffer;
- const char *buf;
- size_t backslashes;
- size_t len;
- size_t hits;
- size_t i, j;
- char c;
- bool point;
-
- token->type = BC_LEX_NUMBER;
-
- point = start == '.';
-
- buffer = lex->buffer + lex->idx;
-
- backslashes = 0;
- i = 0;
- c = buffer[i];
-
- while (c && ((c >= '0' && c <= '9') || (c >= 'A' && c <= 'F') ||
- (c == '.' && !point) || (c == '\\' && buffer[i + 1] == '\n')))
- {
- if (c == '\\') {
- ++i;
- backslashes += 1;
- }
-
- c = buffer[++i];
- }
-
- len = i + 1;
-
- token->string = malloc(len - backslashes + 1);
-
- if (!token->string) return BC_STATUS_MALLOC_FAIL;
-
- token->string[0] = start;
-
- buf = buffer - 1;
- hits = 0;
-
- for (j = 1; j < len; ++j) {
-
- c = buf[j];
-
- // If we have hit a backslash, skip it.
- // We don't have to check for a newline
- // because it's guaranteed.
- if (hits < backslashes && c == '\\') {
- ++hits;
- ++j;
- continue;
- }
-
- token->string[j - (hits * 2)] = c;
- }
-
- token->string[len] = '\0';
-
- lex->idx += i;
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_lex_name(BcLex *lex, BcLexToken *token) {
-
- BcStatus status;
- const char *buffer;
- size_t i;
- char c;
-
- buffer = lex->buffer + lex->idx - 1;
-
- for (i = 0; i < sizeof(bc_lex_keywords) / sizeof(bc_lex_keywords[0]); ++i) {
-
- if (!strncmp(buffer, bc_lex_keywords[i].name, bc_lex_keywords[i].len)) {
-
- token->type = BC_LEX_KEY_AUTO + i;
-
- if (!bc_lex_keywords[i].posix &&
- (status = bc_posix_error(BC_STATUS_POSIX_INVALID_KEYWORD,
- lex->file, lex->line,
- bc_lex_keywords[i].name)))
- {
- return status;
- }
-
- // We need to minus one because the
- // index has already been incremented.
- lex->idx += bc_lex_keywords[i].len - 1;
-
- return BC_STATUS_SUCCESS;
- }
- }
-
- token->type = BC_LEX_NAME;
-
- i = 0;
- c = buffer[i];
-
- while ((c >= 'a' && c<= 'z') || (c >= '0' && c <= '9') || c == '_') {
- ++i;
- c = buffer[i];
- }
-
- if (i > 1 && (status = bc_posix_error(BC_STATUS_POSIX_NAME_LEN,
- lex->file, lex->line, buffer)))
- {
- return status;
- }
-
- token->string = malloc(i + 1);
-
- if (!token->string) return BC_STATUS_MALLOC_FAIL;
-
- strncpy(token->string, buffer, i);
- token->string[i] = '\0';
-
- // Increment the index. It is minus one
- // because it has already been incremented.
- lex->idx += i - 1;
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_lex_token(BcLex *lex, BcLexToken *token) {
-
- BcStatus status;
- char c;
- char c2;
-
- status = BC_STATUS_SUCCESS;
-
- c = lex->buffer[lex->idx];
-
- ++lex->idx;
-
- // This is the workhorse of the lexer.
- switch (c) {
-
- case '\0':
- {
- token->type = BC_LEX_EOF;
- break;
- }
-
- case '\t':
- {
- status = bc_lex_whitespace(lex, token);
- break;
- }
-
- case '\n':
- {
- lex->newline = true;
- token->type = BC_LEX_NEWLINE;
- break;
- }
-
- case '\v':
- case '\f':
- case '\r':
- case ' ':
- {
- status = bc_lex_whitespace(lex, token);
- break;
- }
-
- case '!':
- {
- c2 = lex->buffer[lex->idx];
-
- if (c2 == '=') {
- ++lex->idx;
- token->type = BC_LEX_OP_REL_NOT_EQ;
- }
- else {
-
- if ((status = bc_posix_error(BC_STATUS_POSIX_BOOL_OPS,
- lex->file, lex->line, "!")))
- {
- return status;
- }
-
- token->type = BC_LEX_OP_BOOL_NOT;
- }
-
- break;
- }
-
- case '"':
- {
- status = bc_lex_string(lex, token);
- break;
- }
-
- case '#':
- {
- if ((status = bc_posix_error(BC_STATUS_POSIX_SCRIPT_COMMENT,
- lex->file, lex->line, NULL)))
- {
- return status;
- }
-
- token->type = BC_LEX_WHITESPACE;
-
- ++lex->idx;
- while (lex->idx < lex->len && lex->buffer[lex->idx] != '\n') ++lex->idx;
-
- break;
- }
-
- case '%':
- {
- c2 = lex->buffer[lex->idx];
-
- if (c2 == '=') {
- ++lex->idx;
- token->type = BC_LEX_OP_ASSIGN_MODULUS;
- }
- else token->type = BC_LEX_OP_MODULUS;
-
- break;
- }
-
- case '&':
- {
- c2 = lex->buffer[lex->idx];
-
- if (c2 == '&') {
-
- if ((status = bc_posix_error(BC_STATUS_POSIX_BOOL_OPS,
- lex->file, lex->line, "&&")))
- {
- return status;
- }
-
- ++lex->idx;
- token->type = BC_LEX_OP_BOOL_AND;
- }
- else {
- token->type = BC_LEX_INVALID;
- status = BC_STATUS_LEX_INVALID_TOKEN;
- }
-
- break;
- }
-
- case '(':
- {
- token->type = BC_LEX_LEFT_PAREN;
- break;
- }
-
- case ')':
- {
- token->type = BC_LEX_RIGHT_PAREN;
- break;
- }
-
- case '*':
- {
- c2 = lex->buffer[lex->idx];
-
- if (c2 == '=') {
- ++lex->idx;
- token->type = BC_LEX_OP_ASSIGN_MULTIPLY;
- }
- else token->type = BC_LEX_OP_MULTIPLY;
-
- break;
- }
-
- case '+':
- {
- c2 = lex->buffer[lex->idx];
-
- if (c2 == '=') {
- ++lex->idx;
- token->type = BC_LEX_OP_ASSIGN_PLUS;
- }
- else if (c2 == '+') {
- ++lex->idx;
- token->type = BC_LEX_OP_INC;
- }
- else token->type = BC_LEX_OP_PLUS;
-
- break;
- }
-
- case ',':
- {
- token->type = BC_LEX_COMMA;
- break;
- }
-
- case '-':
- {
- c2 = lex->buffer[lex->idx];
-
- if (c2 == '=') {
- ++lex->idx;
- token->type = BC_LEX_OP_ASSIGN_MINUS;
- }
- else if (c2 == '-') {
- ++lex->idx;
- token->type = BC_LEX_OP_DEC;
- }
- else token->type = BC_LEX_OP_MINUS;
-
- break;
- }
-
- case '.':
- {
- c2 = lex->buffer[lex->idx];
-
- if (isdigit(c2)) {
- status = bc_lex_number(lex, token, c);
- }
- else {
-
- status = bc_posix_error(BC_STATUS_POSIX_DOT_LAST,
- lex->file, lex->line, NULL);
-
- token->type = BC_LEX_KEY_LAST;
- }
-
- break;
- }
-
- case '/':
- {
- c2 = lex->buffer[lex->idx];
-
- if (c2 == '=') {
- ++lex->idx;
- token->type = BC_LEX_OP_ASSIGN_DIVIDE;
- }
- else if (c2 == '*') status = bc_lex_comment(lex, token);
- else token->type = BC_LEX_OP_DIVIDE;
-
- break;
- }
-
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- case '8':
- case '9':
- {
- status = bc_lex_number(lex, token, c);
- break;
- }
-
- case ';':
- {
- token->type = BC_LEX_SEMICOLON;
- break;
- }
-
- case '<':
- {
- c2 = lex->buffer[lex->idx];
-
- if (c2 == '=') {
- ++lex->idx;
- token->type = BC_LEX_OP_REL_LESS_EQ;
- }
- else token->type = BC_LEX_OP_REL_LESS;
-
- break;
- }
-
- case '=':
- {
- c2 = lex->buffer[lex->idx];
-
- if (c2 == '=') {
- ++lex->idx;
- token->type = BC_LEX_OP_REL_EQUAL;
- }
- else token->type = BC_LEX_OP_ASSIGN;
-
- break;
- }
-
- case '>':
- {
- c2 = lex->buffer[lex->idx];
-
- if (c2 == '=') {
- ++lex->idx;
- token->type = BC_LEX_OP_REL_GREATER_EQ;
- }
- else token->type = BC_LEX_OP_REL_GREATER;
-
- break;
- }
-
- case 'A':
- case 'B':
- case 'C':
- case 'D':
- case 'E':
- case 'F':
- {
- status = bc_lex_number(lex, token, c);
- break;
- }
-
- case '[':
- {
- token->type = BC_LEX_LEFT_BRACKET;
- break;
- }
-
- case '\\':
- {
- status = bc_lex_whitespace(lex, token);
- break;
- }
-
- case ']':
- {
- token->type = BC_LEX_RIGHT_BRACKET;
- break;
- }
-
- case '^':
- {
- c2 = lex->buffer[lex->idx];
-
- if (c2 == '=') {
- ++lex->idx;
- token->type = BC_LEX_OP_ASSIGN_POWER;
- }
- else token->type = BC_LEX_OP_POWER;
-
- break;
- }
-
- case 'a':
- case 'b':
- case 'c':
- case 'd':
- case 'e':
- case 'f':
- case 'g':
- case 'h':
- case 'i':
- case 'j':
- case 'k':
- case 'l':
- case 'm':
- case 'n':
- case 'o':
- case 'p':
- case 'q':
- case 'r':
- case 's':
- case 't':
- case 'u':
- case 'v':
- case 'w':
- case 'x':
- case 'y':
- case 'z':
- {
- status = bc_lex_name(lex, token);
- break;
- }
-
- case '{':
- {
- token->type = BC_LEX_LEFT_BRACE;
- break;
- }
-
- case '|':
- {
- c2 = lex->buffer[lex->idx];
-
- if (c2 == '|') {
-
- if ((status = bc_posix_error(BC_STATUS_POSIX_BOOL_OPS,
- lex->file, lex->line, "||")))
- {
- return status;
- }
-
- ++lex->idx;
- token->type = BC_LEX_OP_BOOL_OR;
- }
- else {
- token->type = BC_LEX_INVALID;
- status = BC_STATUS_LEX_INVALID_TOKEN;
- }
-
- break;
- }
-
- case '}':
- {
- token->type = BC_LEX_RIGHT_BRACE;
- break;
- }
-
- default:
- {
- token->type = BC_LEX_INVALID;
- status = BC_STATUS_LEX_INVALID_TOKEN;
- break;
- }
- }
-
- return status;
-}
-
-BcStatus bc_lex_printToken(BcLexToken *token) {
-
- printf("<%s", bc_lex_token_type_strs[token->type]);
-
- switch (token->type) {
-
- case BC_LEX_STRING:
- case BC_LEX_NAME:
- case BC_LEX_NUMBER:
- {
- printf(":%s", token->string);
- break;
- }
-
- default:
- {
- // Do nothing.
- break;
- }
- }
-
- putchar('>');
- putchar('\n');
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_lex_init(BcLex *lex, const char *file) {
-
- if (lex == NULL ) return BC_STATUS_INVALID_PARAM;
-
- lex->line = 1;
- lex->newline = false;
- lex->file = file;
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_lex_text(BcLex *lex, const char *text) {
-
- if (lex == NULL || text == NULL) return BC_STATUS_INVALID_PARAM;
-
- lex->buffer = text;
- lex->idx = 0;
- lex->len = strlen(text);
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_lex_next(BcLex *lex, BcLexToken *token) {
-
- BcStatus status;
-
- if (lex == NULL || token == NULL) return BC_STATUS_INVALID_PARAM;
-
- if (lex->idx == lex->len) {
- token->type = BC_LEX_EOF;
- return BC_STATUS_LEX_EOF;
- }
-
- if (lex->newline) {
- ++lex->line;
- lex->newline = false;
- }
-
- // Loop until failure or we don't have whitespace. This
- // is so the parser doesn't get inundated with whitespace.
- do {
- token->string = NULL;
- status = bc_lex_token(lex, token);
- } while (!status && token->type == BC_LEX_WHITESPACE);
-
- return status;
-}
-
-BcStatus bc_parse_else(BcParse *parse, BcVec *code);
-BcStatus bc_parse_semicolonListEnd(BcParse *parse, BcVec *code);
-BcStatus bc_parse_stmt(BcParse *parse, BcVec *code);
-
-BcStatus bc_parse_pushName(BcVec *code, char *name) {
-
- BcStatus status;
- size_t len, i;
-
- status = BC_STATUS_SUCCESS;
- len = strlen(name);
-
- for (i = 0; !status && i < len; ++i)
- status = bc_vec_pushByte(code, (uint8_t) name[i]);
-
- if (status) return status;
-
- free(name);
-
- return bc_vec_pushByte(code, (uint8_t) ':');
-}
-
-BcStatus bc_parse_pushIndex(BcVec *code, size_t idx) {
-
- BcStatus status;
- uint8_t amt;
- uint8_t nums[sizeof(size_t)];
- uint32_t i;
-
- amt = 0;
- i = 0;
-
- while (idx) {
- nums[amt] = (uint8_t) idx;
- idx &= ~(0xFF);
- idx >>= sizeof(uint8_t) * CHAR_BIT;
- ++amt;
- }
-
- status = bc_vec_pushByte(code, amt);
-
- if (status) return status;
-
- while (!status && i < amt) {
- status = bc_vec_pushByte(code, nums[i]);
- ++i;
- }
-
- return status;
-}
-
-BcStatus bc_parse_operator(BcParse *parse, BcVec *code, BcVec *ops,
- BcLexTokenType t, uint32_t *num_exprs,
- bool next)
-{
- BcStatus status;
- BcLexTokenType top;
- BcLexTokenType *ptr;
- uint8_t lp;
- uint8_t rp;
- bool rleft;
-
- rp = bc_parse_ops[t].prec;
- rleft = bc_parse_ops[t].left;
-
- if (ops->len != 0) {
-
- ptr = bc_vec_top(ops);
- top = *ptr;
-
- if (top != BC_LEX_LEFT_PAREN) {
-
- lp = bc_parse_ops[top].prec;
-
- while (lp < rp || (lp == rp && rleft)) {
-
- status = bc_vec_pushByte(code, bc_parse_insts[top - BC_LEX_OP_NEGATE]);
-
- if (status) return status;
-
- status = bc_vec_pop(ops);
-
- if (status) return status;
-
- *num_exprs -= top != BC_LEX_OP_BOOL_NOT &&
- top != BC_LEX_OP_NEGATE ? 1 : 0;
-
- if (ops->len == 0) break;
-
- ptr = bc_vec_top(ops);
- top = *ptr;
-
- if (top == BC_LEX_LEFT_PAREN) break;
-
- lp = bc_parse_ops[top].prec;
- }
- }
- }
-
- status = bc_vec_push(ops, &t);
-
- if (status) return status;
-
- if (next && (status = bc_lex_next(&parse->lex, &parse->token))) goto err;
-
- return status;
-
-err:
-
- if (parse->token.string) free(parse->token.string);
-
- return status;
-}
-
-BcStatus bc_parse_rightParen(BcParse *parse, BcVec *code,
- BcVec *ops, uint32_t *nexs)
-{
- BcStatus status;
- BcLexTokenType top;
- BcLexTokenType *ptr;
-
- if (ops->len == 0) return BC_STATUS_PARSE_INVALID_EXPR;
-
- ptr = bc_vec_top(ops);
- top = *ptr;
-
- while (top != BC_LEX_LEFT_PAREN) {
-
- status = bc_vec_pushByte(code, bc_parse_insts[top - BC_LEX_OP_NEGATE]);
-
- if (status) return status;
-
- status = bc_vec_pop(ops);
-
- if (status) return status;
-
- *nexs -= top != BC_LEX_OP_BOOL_NOT &&
- top != BC_LEX_OP_NEGATE ? 1 : 0;
-
- if (ops->len == 0) return BC_STATUS_PARSE_INVALID_EXPR;
-
- ptr = bc_vec_top(ops);
- top = *ptr;
- }
-
- status = bc_vec_pop(ops);
-
- if (status) return status;
-
- return bc_lex_next(&parse->lex, &parse->token);
-}
-
-BcStatus bc_parse_params(BcParse *parse, BcVec *code, uint8_t flags) {
-
- BcStatus status;
- bool comma;
- size_t nparams;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- if (parse->token.type == BC_LEX_RIGHT_PAREN) {
-
- status = bc_vec_pushByte(code, BC_INST_CALL);
-
- if (status) return status;
-
- return bc_vec_pushByte(code, 0);
- }
-
- nparams = 0;
-
- do {
-
- ++nparams;
-
- status = bc_parse_expr(parse, code, flags & ~(BC_PARSE_EXPR_PRINT));
-
- if (status) return status;
-
- if (parse->token.type == BC_LEX_COMMA) {
-
- comma = true;
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
- }
- else comma = false;
-
- } while (!status && parse->token.type != BC_LEX_RIGHT_PAREN);
-
- if (status) return status;
-
- if (comma) return BC_STATUS_PARSE_INVALID_TOKEN;
-
- status = bc_vec_pushByte(code, BC_INST_CALL);
-
- if (status) return status;
-
- return bc_parse_pushIndex(code, nparams);
-}
-
-BcStatus bc_parse_call(BcParse *parse, BcVec *code,
- char *name, uint8_t flags)
-{
- BcStatus status;
- BcEntry entry;
- BcEntry *entry_ptr;
- size_t idx;
-
- entry.name = name;
-
- status = bc_parse_params(parse, code, flags);
-
- if (status) goto err;
-
- if (parse->token.type != BC_LEX_RIGHT_PAREN) {
- status = BC_STATUS_PARSE_INVALID_TOKEN;
- goto err;
- }
-
- idx = bc_veco_index(&parse->program->func_map, &entry);
-
- if (idx == -1) {
-
- status = bc_program_func_add(parse->program, name, &idx);
-
- if (status) return status;
-
- name = NULL;
- }
- else free(name);
-
- entry_ptr = bc_veco_item(&parse->program->func_map, idx);
-
- if (!entry_ptr) return BC_STATUS_EXEC_UNDEFINED_FUNC;
-
- status = bc_parse_pushIndex(code, entry_ptr->idx);
-
- if (status) return status;
-
- return bc_lex_next(&parse->lex, &parse->token);
-
-err:
-
- if (name) free(name);
-
- return status;
-}
-
-BcStatus bc_parse_expr_name(BcParse *parse, BcVec *code,
- BcExprType *type, uint8_t flags)
-{
- BcStatus status;
- char *name;
-
- name = parse->token.string;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) goto err;
-
- if (parse->token.type == BC_LEX_LEFT_BRACKET) {
-
- *type = BC_EXPR_ARRAY_ELEM;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) goto err;
-
- status = bc_parse_expr(parse, code, flags);
-
- if (status) goto err;
-
- if (parse->token.type != BC_LEX_RIGHT_BRACKET) {
- status = BC_STATUS_PARSE_INVALID_TOKEN;
- goto err;
- }
-
- status = bc_vec_pushByte(code, BC_INST_PUSH_ARRAY);
-
- if (status) goto err;
-
- status = bc_parse_pushName(code, name);
- }
- else if (parse->token.type == BC_LEX_LEFT_PAREN) {
-
- if (flags & BC_PARSE_EXPR_NO_CALL) {
- status = BC_STATUS_PARSE_INVALID_TOKEN;
- goto err;
- }
-
- *type = BC_EXPR_FUNC_CALL;
-
- status = bc_parse_call(parse, code, name, flags);
- }
- else {
-
- *type = BC_EXPR_VAR;
-
- status = bc_vec_pushByte(code, BC_INST_PUSH_VAR);
-
- if (status) goto err;
-
- status = bc_parse_pushName(code, name);
- }
-
- return status;
-
-err:
-
- free(name);
-
- return status;
-}
-
-BcStatus bc_parse_read(BcParse *parse, BcVec *code) {
-
- BcStatus status;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- if (parse->token.type != BC_LEX_LEFT_PAREN)
- return BC_STATUS_PARSE_INVALID_TOKEN;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- if (parse->token.type != BC_LEX_RIGHT_PAREN)
- return BC_STATUS_PARSE_INVALID_TOKEN;
-
- status = bc_vec_pushByte(code, BC_INST_READ);
-
- if (status) return status;
-
- return bc_lex_next(&parse->lex, &parse->token);
-}
-
-BcStatus bc_parse_builtin(BcParse *parse, BcVec *code,
- BcLexTokenType type, uint8_t flags)
-{
- BcStatus status;
- uint8_t inst;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- if (parse->token.type != BC_LEX_LEFT_PAREN)
- return BC_STATUS_PARSE_INVALID_TOKEN;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- status = bc_parse_expr(parse, code, flags & ~(BC_PARSE_EXPR_PRINT));
-
- if (status) return status;
-
- if (parse->token.type != BC_LEX_RIGHT_PAREN)
- return BC_STATUS_PARSE_INVALID_TOKEN;
-
- inst = type == BC_LEX_KEY_LENGTH ? BC_INST_LENGTH : BC_INST_SQRT;
-
- status = bc_vec_pushByte(code, inst);
-
- if (status) return status;
-
- return bc_lex_next(&parse->lex, &parse->token);
-}
-
-BcStatus bc_parse_scale(BcParse *parse, BcVec *code,
- BcExprType *type, uint8_t flags)
-{
- BcStatus status;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- if (parse->token.type != BC_LEX_LEFT_PAREN) {
-
- *type = BC_EXPR_SCALE;
-
- return bc_vec_pushByte(code, BC_INST_PUSH_SCALE);
- }
-
- *type = BC_EXPR_SCALE_FUNC;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- status = bc_parse_expr(parse, code, flags);
-
- if (status) return status;
-
- if (parse->token.type != BC_LEX_RIGHT_PAREN)
- return BC_STATUS_PARSE_INVALID_TOKEN;
-
- status = bc_vec_pushByte(code, BC_INST_SCALE_FUNC);
-
- if (status) return status;
-
- return bc_lex_next(&parse->lex, &parse->token);
-}
-
-BcStatus bc_parse_incdec(BcParse *parse, BcVec *code, BcExprType *prev,
- uint32_t *nexprs, uint8_t flags)
-{
- BcStatus status;
- BcLexTokenType type;
- BcExprType etype;
- uint8_t inst;
-
- etype = *prev;
-
- if (etype == BC_EXPR_VAR || etype == BC_EXPR_ARRAY_ELEM ||
- etype == BC_EXPR_SCALE || etype == BC_EXPR_LAST ||
- etype == BC_EXPR_IBASE || etype == BC_EXPR_OBASE)
- {
- *prev = parse->token.type == BC_LEX_OP_INC ?
- BC_EXPR_INC_POST : BC_EXPR_DEC_POST;
-
- inst = parse->token.type == BC_LEX_OP_INC ?
- BC_INST_INC_DUP : BC_INST_DEC_DUP;
-
- status = bc_vec_pushByte(code, inst);
-
- if (status) return status;
-
- status = bc_lex_next(&parse->lex, &parse->token);
- }
- else {
-
- inst = parse->token.type == BC_LEX_OP_INC ? BC_INST_INC : BC_INST_DEC;
-
- *prev = parse->token.type == BC_LEX_OP_INC ?
- BC_EXPR_INC_PRE : BC_EXPR_DEC_PRE;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- type = parse->token.type;
-
- // Because we parse the next part of the expression
- // right here, we need to increment this.
- *nexprs = *nexprs + 1;
-
- switch (type) {
-
- case BC_LEX_NAME:
- {
- status = bc_parse_expr_name(parse, code, prev,
- flags | BC_PARSE_EXPR_NO_CALL);
- break;
- }
-
- case BC_LEX_KEY_IBASE:
- {
- status = bc_vec_pushByte(code, BC_INST_PUSH_IBASE);
-
- if (status) return status;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- break;
- }
-
- case BC_LEX_KEY_LAST:
- {
- status = bc_vec_pushByte(code, BC_INST_PUSH_LAST);
-
- if (status) return status;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- break;
- }
-
- case BC_LEX_KEY_OBASE:
- {
- status = bc_vec_pushByte(code, BC_INST_PUSH_OBASE);
-
- if (status) return status;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- break;
- }
-
- case BC_LEX_KEY_SCALE:
- {
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- if (parse->token.type == BC_LEX_LEFT_PAREN)
- return BC_STATUS_PARSE_INVALID_TOKEN;
-
- status = bc_vec_pushByte(code, BC_INST_PUSH_SCALE);
-
- break;
- }
-
- default:
- {
- return BC_STATUS_PARSE_INVALID_TOKEN;
- }
- }
-
- if (status) return status;
-
- status = bc_vec_pushByte(code, inst);
- }
-
- return status;
-}
-
-BcStatus bc_parse_minus(BcParse *parse, BcVec *exs, BcVec *ops,
- BcExprType *prev, bool rparen, uint32_t *nexprs)
-{
- BcStatus status;
- BcLexTokenType type;
- BcExprType etype;
-
- etype = *prev;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- type = parse->token.type;
-
- if (type != BC_LEX_NAME && type != BC_LEX_NUMBER &&
- type != BC_LEX_KEY_SCALE && type != BC_LEX_KEY_LAST &&
- type != BC_LEX_KEY_IBASE && type != BC_LEX_KEY_OBASE &&
- type != BC_LEX_LEFT_PAREN && type != BC_LEX_OP_MINUS &&
- type != BC_LEX_OP_INC && type != BC_LEX_OP_DEC &&
- type != BC_LEX_OP_BOOL_NOT)
- {
- return BC_STATUS_PARSE_INVALID_TOKEN;
- }
-
- type = rparen || etype == BC_EXPR_INC_POST || etype == BC_EXPR_DEC_POST ||
- (etype >= BC_EXPR_NUMBER && etype <= BC_EXPR_SQRT) ?
- BC_LEX_OP_MINUS : BC_LEX_OP_NEGATE;
-
- *prev = BC_PARSE_TOKEN_TO_EXPR(type);
-
- if (type == BC_LEX_OP_MINUS)
- status = bc_parse_operator(parse, exs, ops, type, nexprs, false);
- else
- // We can just push onto the op stack because this is the largest
- // precedence operator that gets pushed. Inc/dec does not.
- status = bc_vec_push(ops, &type);
-
- return status;
-}
-
-BcStatus bc_parse_string(BcParse *parse, BcVec *code) {
-
- BcStatus status;
- size_t len;
-
- len = parse->program->strings.len;
-
- status = bc_vec_push(&parse->program->strings, &parse->token.string);
-
- if (status) return status;
-
- status = bc_vec_pushByte(code, BC_INST_STR);
-
- if (status) return status;
-
- status = bc_parse_pushIndex(code, len);
-
- if (status) return status;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- return bc_parse_semicolonListEnd(parse, code);
-}
-
-BcStatus bc_parse_print(BcParse *parse, BcVec *code) {
-
- BcStatus status;
- BcLexTokenType type;
- bool comma;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- type = parse->token.type;
-
- if (type == BC_LEX_SEMICOLON || type == BC_LEX_NEWLINE)
- return BC_STATUS_PARSE_INVALID_PRINT;
-
- comma = false;
-
- while (!status && type != BC_LEX_SEMICOLON && type != BC_LEX_NEWLINE) {
-
- if (type == BC_LEX_STRING) {
-
- size_t len;
-
- len = parse->program->strings.len;
-
- status = bc_vec_push(&parse->program->strings, &parse->token.string);
-
- if (status) return status;
-
- status = bc_vec_pushByte(code, BC_INST_PRINT_STR);
-
- if (status) return status;
-
- status = bc_parse_pushIndex(code, len);
- }
- else {
-
- status = bc_parse_expr(parse, code, 0);
-
- if (status) return status;
-
- status = bc_vec_pushByte(code, BC_INST_PRINT_EXPR);
- }
-
- if (status) return status;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- if (parse->token.type == BC_LEX_COMMA) {
- comma = true;
- status = bc_lex_next(&parse->lex, &parse->token);
- }
- else comma = false;
-
- type = parse->token.type;
- }
-
- if (status) return status;
-
- if (comma) return BC_STATUS_PARSE_INVALID_TOKEN;
-
- return bc_lex_next(&parse->lex, &parse->token);
-}
-
-BcStatus bc_parse_return(BcParse *parse, BcVec *code) {
-
- BcStatus status;
-
- if (!BC_PARSE_FUNC(parse)) return BC_STATUS_PARSE_INVALID_TOKEN;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- if (parse->token.type != BC_LEX_NEWLINE &&
- parse->token.type != BC_LEX_SEMICOLON &&
- parse->token.type != BC_LEX_LEFT_PAREN &&
- (status = bc_posix_error(BC_STATUS_POSIX_RETURN_PARENS,
- parse->lex.file, parse->lex.line, NULL)))
- {
- return status;
- }
-
- if (parse->token.type == BC_LEX_NEWLINE ||
- parse->token.type == BC_LEX_SEMICOLON)
- {
- status = bc_vec_pushByte(code, BC_INST_RETURN_ZERO);
- }
- else {
-
- status = bc_parse_expr(parse, code, 0);
-
- if (status) return status;
-
- status = bc_vec_pushByte(code, BC_INST_RETURN);
- }
-
- return status;
-}
-
-BcStatus bc_parse_endBody(BcParse *parse, BcVec *code, bool brace) {
-
- BcStatus status;
- uint8_t *flag_ptr;
-
- if (parse->flags.len <= 1 || parse->num_braces == 0)
- return BC_STATUS_PARSE_INVALID_TOKEN;
-
- flag_ptr = bc_vec_top(&parse->flags);
-
- if (!flag_ptr) return BC_STATUS_PARSE_BUG;
-
- if (brace) {
-
- if (parse->token.type == BC_LEX_RIGHT_BRACE) {
-
- if (!parse->num_braces) return BC_STATUS_PARSE_INVALID_TOKEN;
-
- --parse->num_braces;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
- }
- else return BC_STATUS_PARSE_INVALID_TOKEN;
- }
-
- if (BC_PARSE_IF(parse)) {
-
- while (parse->token.type == BC_LEX_NEWLINE) {
- status = bc_lex_next(&parse->lex, &parse->token);
- if (status) return status;
- }
-
- status = bc_vec_pop(&parse->flags);
-
- if (status) return status;
-
- flag_ptr = BC_PARSE_TOP_FLAG_PTR(parse);
- *flag_ptr = (*flag_ptr | BC_PARSE_FLAG_IF_END);
-
- if (parse->token.type == BC_LEX_KEY_ELSE)
- status = bc_parse_else(parse, code);
- }
- else if (BC_PARSE_FUNC_INNER(parse)) {
-
- parse->func = 0;
-
- status = bc_vec_pushByte(code, BC_INST_RETURN_ZERO);
-
- if (status) return status;
-
- status = bc_vec_pop(&parse->flags);
- }
- else {
-
- BcInstPtr *ip;
- BcFunc *func;
- size_t *label;
-
- ip = bc_vec_top(&parse->exit_labels);
-
- if (!ip) return BC_STATUS_PARSE_BUG;
-
- status = bc_vec_pushByte(code, BC_INST_JUMP);
-
- if (status) return status;
-
- label = bc_vec_top(&parse->cond_labels);
-
- if (!label) return BC_STATUS_PARSE_BUG;
-
- status = bc_parse_pushIndex(code, *label);
-
- if (status) return status;
-
- func = bc_vec_item(&parse->program->funcs, parse->func);
-
- if (!func) return BC_STATUS_PARSE_BUG;
-
- label = bc_vec_item(&func->labels, ip->idx);
-
- if (!label) return BC_STATUS_PARSE_BUG;
-
- *label = code->len;
-
- status = bc_vec_pop(&parse->flags);
- }
-
- return status;
-}
-
-BcStatus bc_parse_startBody(BcParse *parse, uint8_t flags) {
-
- uint8_t *flag_ptr;
-
- flag_ptr = BC_PARSE_TOP_FLAG_PTR(parse);
-
- if (!flag_ptr) return BC_STATUS_PARSE_BUG;
-
- flags |= (*flag_ptr & (BC_PARSE_FLAG_FUNC | BC_PARSE_FLAG_LOOP));
- flags |= BC_PARSE_FLAG_BODY;
-
- return bc_vec_push(&parse->flags, &flags);
-}
-
-BcStatus bc_parse_noElse(BcParse *parse, BcVec *code) {
-
- uint8_t *flag_ptr;
- BcInstPtr *ip;
- BcFunc *func;
- size_t *label;
-
- flag_ptr = BC_PARSE_TOP_FLAG_PTR(parse);
- *flag_ptr = (*flag_ptr & ~(BC_PARSE_FLAG_IF_END));
-
- ip = bc_vec_top(&parse->exit_labels);
-
- if (!ip || ip->func || ip->len) return BC_STATUS_PARSE_BUG;
-
- func = bc_vec_item(&parse->program->funcs, parse->func);
-
- if (!func || code != &func->code) return BC_STATUS_PARSE_BUG;
-
- label = bc_vec_item(&func->labels, ip->idx);
-
- if (!label) return BC_STATUS_PARSE_BUG;
-
- *label = code->len;
-
- return bc_vec_pop(&parse->exit_labels);
-}
-
-BcStatus bc_parse_if(BcParse *parse, BcVec *code) {
-
- BcStatus status;
- BcInstPtr ip;
- BcFunc *func;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- if (parse->token.type != BC_LEX_LEFT_PAREN)
- return BC_STATUS_PARSE_INVALID_TOKEN;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- status = bc_parse_expr(parse, code, BC_PARSE_EXPR_POSIX_REL);
-
- if (status) return status;
-
- if (parse->token.type != BC_LEX_RIGHT_PAREN)
- return BC_STATUS_PARSE_INVALID_TOKEN;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- status = bc_vec_pushByte(code, BC_INST_JUMP_ZERO);
-
- if (status) return status;
-
- func = bc_vec_item(&parse->program->funcs, parse->func);
-
- if (!func) return BC_STATUS_EXEC_UNDEFINED_FUNC;
-
- ip.idx = func->labels.len;
- ip.func = 0;
- ip.len = 0;
-
- status = bc_parse_pushIndex(code, ip.idx);
-
- if (status) return status;
-
- status = bc_vec_push(&parse->exit_labels, &ip);
-
- if (status) return status;
-
- status = bc_vec_push(&func->labels, &ip.idx);
-
- if (status) return status;
-
- return bc_parse_startBody(parse, BC_PARSE_FLAG_IF);
-}
-
-BcStatus bc_parse_else(BcParse *parse, BcVec *code) {
-
- BcStatus status;
- BcInstPtr ip;
- BcFunc *func;
-
- if (!BC_PARSE_IF_END(parse)) return BC_STATUS_PARSE_INVALID_TOKEN;
-
- func = bc_vec_item(&parse->program->funcs, parse->func);
-
- if (!func) return BC_STATUS_PARSE_BUG;
-
- ip.idx = func->labels.len;
- ip.func = 0;
- ip.len = 0;
-
- status = bc_vec_pushByte(code, BC_INST_JUMP);
-
- if (status) return status;
-
- status = bc_parse_pushIndex(code, ip.idx);
-
- if (status) return status;
-
- status = bc_parse_noElse(parse, code);
-
- if (status) return status;
-
- status = bc_vec_push(&parse->exit_labels, &ip);
-
- if (status) return status;
-
- status = bc_vec_push(&func->labels, &ip.idx);
-
- if (status) return status;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- return bc_parse_startBody(parse, BC_PARSE_FLAG_ELSE);
-}
-
-BcStatus bc_parse_while(BcParse *parse, BcVec *code) {
-
- BcStatus status;
- uint8_t flags;
- BcFunc *func;
- BcInstPtr ip;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- if (parse->token.type != BC_LEX_LEFT_PAREN)
- return BC_STATUS_PARSE_INVALID_TOKEN;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- func = bc_vec_item(&parse->program->funcs, parse->func);
-
- if (!func) return BC_STATUS_EXEC_UNDEFINED_FUNC;
-
- ip.idx = func->labels.len;
-
- status = bc_vec_push(&func->labels, &code->len);
-
- if (status) return status;
-
- status = bc_vec_push(&parse->cond_labels, &ip.idx);
-
- if (status) return status;
-
- ip.idx = func->labels.len;
- ip.func = 1;
- ip.len = 0;
-
- status = bc_vec_push(&parse->exit_labels, &ip);
-
- if (status) return status;
-
- status = bc_vec_push(&func->labels, &ip.idx);
-
- if (status) return status;
-
- status = bc_parse_expr(parse, code, BC_PARSE_EXPR_POSIX_REL);
-
- if (status) return status;
-
- if (parse->token.type != BC_LEX_RIGHT_PAREN)
- return BC_STATUS_PARSE_INVALID_TOKEN;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- status = bc_vec_pushByte(code, BC_INST_JUMP_ZERO);
-
- if (status) return status;
-
- status = bc_parse_pushIndex(code, ip.idx);
-
- if (status) return status;
-
- flags = BC_PARSE_FLAG_LOOP | BC_PARSE_FLAG_LOOP_INNER;
-
- return bc_parse_startBody(parse, flags);
-}
-
-BcStatus bc_parse_for(BcParse *parse, BcVec *code) {
-
- BcStatus status;
- BcFunc *func;
- BcInstPtr ip;
- size_t cond_idx, exit_idx, body_idx, update_idx;
- uint8_t flags;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- if (parse->token.type != BC_LEX_LEFT_PAREN)
- return BC_STATUS_PARSE_INVALID_TOKEN;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- if (parse->token.type != BC_LEX_SEMICOLON)
- status = bc_parse_expr(parse, code, 0);
- else
- status = bc_posix_error(BC_STATUS_POSIX_MISSING_FOR_INIT,
- parse->lex.file, parse->lex.line, NULL);
-
- if (status) return status;
-
- if (parse->token.type != BC_LEX_SEMICOLON)
- return BC_STATUS_PARSE_INVALID_TOKEN;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- func = bc_vec_item(&parse->program->funcs, parse->func);
-
- if (!func) return BC_STATUS_PARSE_BUG;
-
- cond_idx = func->labels.len;
- update_idx = cond_idx + 1;
- body_idx = update_idx + 1;
- exit_idx = body_idx + 1;
-
- status = bc_vec_push(&func->labels, &code->len);
-
- if (status) return status;
-
- if (parse->token.type != BC_LEX_SEMICOLON)
- status = bc_parse_expr(parse, code, BC_PARSE_EXPR_POSIX_REL);
- else status = bc_posix_error(BC_STATUS_POSIX_MISSING_FOR_COND,
- parse->lex.file, parse->lex.line, NULL);
-
- if (status) return status;
-
- if (parse->token.type != BC_LEX_SEMICOLON)
- return BC_STATUS_PARSE_INVALID_TOKEN;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- status = bc_vec_pushByte(code, BC_INST_JUMP_ZERO);
-
- if (status) return status;
-
- status = bc_parse_pushIndex(code, exit_idx);
-
- if (status) return status;
-
- status = bc_vec_pushByte(code, BC_INST_JUMP);
-
- if (status) return status;
-
- status = bc_parse_pushIndex(code, body_idx);
-
- if (status) return status;
-
- ip.idx = func->labels.len;
-
- status = bc_vec_push(&parse->cond_labels, &update_idx);
-
- if (status) return status;
-
- status = bc_vec_push(&func->labels, &code->len);
-
- if (status) return status;
-
- if (parse->token.type != BC_LEX_RIGHT_PAREN)
- status = bc_parse_expr(parse, code, 0);
- else
- status = bc_posix_error(BC_STATUS_POSIX_MISSING_FOR_UPDATE,
- parse->lex.file, parse->lex.line, NULL);
-
- if (status) return status;
-
- if (parse->token.type != BC_LEX_RIGHT_PAREN) {
- status = bc_parse_expr(parse, code, BC_PARSE_EXPR_POSIX_REL);
- if (status) return status;
- }
-
- if (parse->token.type != BC_LEX_RIGHT_PAREN)
- return BC_STATUS_PARSE_INVALID_TOKEN;
-
- status = bc_vec_pushByte(code, BC_INST_JUMP);
-
- if (status) return status;
-
- status = bc_parse_pushIndex(code, cond_idx);
-
- if (status) return status;
-
- status = bc_vec_push(&func->labels, &code->len);
-
- if (status) return status;
-
- ip.idx = exit_idx;
- ip.func = 1;
- ip.len = 0;
-
- status = bc_vec_push(&parse->exit_labels, &ip);
-
- if (status) return status;
-
- status = bc_vec_push(&func->labels, &ip.idx);
-
- if (status) return status;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- flags = BC_PARSE_FLAG_LOOP | BC_PARSE_FLAG_LOOP_INNER;
-
- return bc_parse_startBody(parse, flags);
-}
-
-BcStatus bc_parse_loopExit(BcParse *parse, BcVec *code,
- BcLexTokenType type)
-{
- BcStatus status;
- size_t idx;
-
- if (!BC_PARSE_LOOP(parse))
- return BC_STATUS_PARSE_INVALID_TOKEN;
-
- if (type == BC_LEX_KEY_BREAK) {
-
- size_t top;
- BcInstPtr *ip;
-
- top = parse->exit_labels.len - 1;
- ip = bc_vec_item(&parse->exit_labels, top);
-
- while (top < parse->exit_labels.len && ip && !ip->func) {
- ip = bc_vec_item(&parse->exit_labels, top);
- --top;
- }
-
- if (top >= parse->exit_labels.len || !ip) return BC_STATUS_PARSE_BUG;
-
- idx = ip->idx;
- }
- else {
-
- size_t *ptr;
-
- ptr = bc_vec_top(&parse->cond_labels);
-
- if (!ptr) return BC_STATUS_PARSE_BUG;
-
- idx = *ptr;
- }
-
- status = bc_vec_pushByte(code, BC_INST_JUMP);
-
- if (status) return status;
-
- status = bc_parse_pushIndex(code, idx);
-
- if (status) return status;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- if (parse->token.type != BC_LEX_SEMICOLON &&
- parse->token.type != BC_LEX_NEWLINE)
- {
- return BC_STATUS_PARSE_INVALID_TOKEN;
- }
-
- return bc_lex_next(&parse->lex, &parse->token);
-}
-
-BcStatus bc_parse_func(BcParse *parse) {
-
- BcLexTokenType type;
- BcStatus status;
- BcFunc *fptr;
- bool comma;
- uint8_t flags;
- char *name;
- bool var;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- name = parse->token.string;
-
- if (parse->token.type != BC_LEX_NAME) {
- status = BC_STATUS_PARSE_INVALID_FUNC;
- goto err;
- }
-
- if (parse->program->funcs.len != parse->program->func_map.vec.len) {
- status = BC_STATUS_PARSE_MISMATCH_NUM_FUNCS;
- goto err;
- }
-
- status = bc_program_func_add(parse->program, name, &parse->func);
-
- if (status) goto err;
-
- if (!parse->func) return BC_STATUS_PARSE_BUG;
-
- fptr = bc_vec_item(&parse->program->funcs, parse->func);
-
- if (!fptr) return BC_STATUS_EXEC_UNDEFINED_FUNC;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- if (parse->token.type != BC_LEX_LEFT_PAREN)
- return BC_STATUS_PARSE_INVALID_FUNC;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- comma = false;
-
- type = parse->token.type;
- name = parse->token.string;
-
- while (!status && type != BC_LEX_RIGHT_PAREN) {
-
- if (type != BC_LEX_NAME) {
- status = BC_STATUS_PARSE_INVALID_FUNC;
- goto err;
- }
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) goto err;
-
- if (parse->token.type == BC_LEX_LEFT_BRACKET) {
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) goto err;
-
- if (parse->token.type != BC_LEX_RIGHT_BRACKET)
- return BC_STATUS_PARSE_INVALID_FUNC;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) goto err;
-
- var = false;
- }
- else {
- var = true;
- }
-
- if (parse->token.type == BC_LEX_COMMA) {
-
- comma = true;
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) goto err;
- }
- else comma = false;
-
- status = bc_func_insert(fptr, name, var, &fptr->params);
-
- if (status) goto err;
-
- type = parse->token.type;
- name = parse->token.string;
- }
-
- if (comma) return BC_STATUS_PARSE_INVALID_FUNC;
-
- flags = BC_PARSE_FLAG_FUNC | BC_PARSE_FLAG_FUNC_INNER | BC_PARSE_FLAG_BODY;
-
- status = bc_parse_startBody(parse, flags);
-
- if (status) return status;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- if (parse->token.type != BC_LEX_LEFT_BRACE)
- return bc_posix_error(BC_STATUS_POSIX_FUNC_HEADER_LEFT_BRACE,
- parse->lex.file, parse->lex.line, NULL);
-
- return status;
-
-err:
-
- free(name);
-
- return status;
-}
-
-BcStatus bc_parse_auto(BcParse *parse) {
-
- BcLexTokenType type;
- BcStatus status;
- bool comma;
- char *name;
- bool var;
- bool one;
- BcFunc *func;
-
- if (!parse->auto_part) return BC_STATUS_PARSE_INVALID_TOKEN;
-
- parse->auto_part = false;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- comma = false;
- one = false;
-
- func = bc_vec_item(&parse->program->funcs, parse->func);
-
- if (!func) return BC_STATUS_EXEC_UNDEFINED_FUNC;
-
- type = parse->token.type;
-
- while (!status && type == BC_LEX_NAME) {
-
- name = parse->token.string;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- one = true;
-
- if (parse->token.type == BC_LEX_LEFT_BRACKET) {
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) goto err;
-
- if (parse->token.type != BC_LEX_RIGHT_BRACKET)
- return BC_STATUS_PARSE_INVALID_FUNC;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) goto err;
-
- var = false;
- }
- else var = true;
-
- if (parse->token.type == BC_LEX_COMMA) {
-
- comma = true;
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) goto err;
- }
- else comma = false;
-
- status = bc_func_insert(func, name, var, &func->autos);
-
- if (status) goto err;
-
- type = parse->token.type;
- }
-
- if (status) return status;
-
- if (comma) return BC_STATUS_PARSE_INVALID_FUNC;
-
- if (!one) return BC_STATUS_PARSE_NO_AUTO;
-
- if (type != BC_LEX_NEWLINE && type != BC_LEX_SEMICOLON)
- return BC_STATUS_PARSE_INVALID_TOKEN;
-
- return bc_lex_next(&parse->lex, &parse->token);
-
-err:
-
- free(name);
-
- return status;
-}
-
-BcStatus bc_parse_body(BcParse *parse, BcVec *code, bool brace) {
-
- BcStatus status;
- uint8_t *flag_ptr;
- uint8_t flags;
-
- if (parse->flags.len < 2) return BC_STATUS_PARSE_BUG;
-
- flag_ptr = bc_vec_top(&parse->flags);
-
- if (!flag_ptr) return BC_STATUS_PARSE_BUG;
-
- *flag_ptr &= ~(BC_PARSE_FLAG_BODY);
-
- flags = *flag_ptr;
-
- if (flags & BC_PARSE_FLAG_FUNC_INNER) {
- if (!brace) return BC_STATUS_PARSE_INVALID_TOKEN;
- parse->auto_part = true;
- status = bc_lex_next(&parse->lex, &parse->token);
- }
- else if (flags) {
-
- status = bc_parse_stmt(parse, code);
-
- if (!brace) {
-
- if (status) return status;
-
- status = bc_parse_endBody(parse, code, false);
- }
- }
- else status = BC_STATUS_PARSE_BUG;
-
- return status;
-}
-
-BcStatus bc_parse_semicolonList(BcParse *parse, BcVec *code) {
-
- BcStatus status;
-
- status = BC_STATUS_SUCCESS;
-
- switch (parse->token.type) {
-
- case BC_LEX_OP_INC:
- case BC_LEX_OP_DEC:
- case BC_LEX_OP_MINUS:
- case BC_LEX_OP_BOOL_NOT:
- case BC_LEX_LEFT_PAREN:
- case BC_LEX_STRING:
- case BC_LEX_NAME:
- case BC_LEX_NUMBER:
- case BC_LEX_KEY_BREAK:
- case BC_LEX_KEY_CONTINUE:
- case BC_LEX_KEY_FOR:
- case BC_LEX_KEY_HALT:
- case BC_LEX_KEY_IBASE:
- case BC_LEX_KEY_IF:
- case BC_LEX_KEY_LAST:
- case BC_LEX_KEY_LENGTH:
- case BC_LEX_KEY_LIMITS:
- case BC_LEX_KEY_OBASE:
- case BC_LEX_KEY_PRINT:
- case BC_LEX_KEY_QUIT:
- case BC_LEX_KEY_READ:
- case BC_LEX_KEY_RETURN:
- case BC_LEX_KEY_SCALE:
- case BC_LEX_KEY_SQRT:
- case BC_LEX_KEY_WHILE:
- {
- status = bc_parse_stmt(parse, code);
- break;
- }
-
- case BC_LEX_NEWLINE:
- {
- status = bc_lex_next(&parse->lex, &parse->token);
- break;
- }
-
- case BC_LEX_SEMICOLON:
- {
- status = bc_parse_semicolonListEnd(parse, code);
- break;
- }
-
- case BC_LEX_EOF:
- {
- if (parse->flags.len > 0) status = BC_STATUS_PARSE_EOF;
- break;
- }
-
- default:
- {
- status = BC_STATUS_PARSE_INVALID_TOKEN;
- break;
- }
- }
-
- return status;
-}
-
-BcStatus bc_parse_semicolonListEnd(BcParse *parse, BcVec *code) {
-
- BcStatus status;
-
- if (parse->token.type == BC_LEX_SEMICOLON) {
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- status = bc_parse_semicolonList(parse, code);
- }
- else if (parse->token.type == BC_LEX_NEWLINE)
- status = bc_lex_next(&parse->lex, &parse->token);
- else if (parse->token.type == BC_LEX_EOF)
- status = BC_STATUS_SUCCESS;
- else
- status = BC_STATUS_PARSE_INVALID_TOKEN;
-
- return status;
-}
-
-BcStatus bc_parse_stmt(BcParse *parse, BcVec *code) {
-
- BcStatus status;
-
- switch (parse->token.type) {
-
- case BC_LEX_NEWLINE:
- {
- status = bc_lex_next(&parse->lex, &parse->token);
- return status;
- }
-
- case BC_LEX_KEY_ELSE:
- {
- parse->auto_part = false;
- break;
- }
-
- case BC_LEX_LEFT_BRACE:
- {
- ++parse->num_braces;
-
- if (!BC_PARSE_BODY(parse)) return BC_STATUS_PARSE_INVALID_TOKEN;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- return bc_parse_body(parse, code, true);
- }
-
- case BC_LEX_KEY_AUTO:
- {
- return bc_parse_auto(parse);
- }
-
- default:
- {
- parse->auto_part = false;
-
- if (BC_PARSE_IF_END(parse)) return bc_parse_noElse(parse, code);
- else if (BC_PARSE_BODY(parse)) return bc_parse_body(parse, code, false);
-
- break;
- }
- }
-
- switch (parse->token.type) {
-
- case BC_LEX_OP_INC:
- case BC_LEX_OP_DEC:
- case BC_LEX_OP_MINUS:
- case BC_LEX_OP_BOOL_NOT:
- case BC_LEX_LEFT_PAREN:
- case BC_LEX_NAME:
- case BC_LEX_NUMBER:
- case BC_LEX_KEY_IBASE:
- case BC_LEX_KEY_LAST:
- case BC_LEX_KEY_LENGTH:
- case BC_LEX_KEY_OBASE:
- case BC_LEX_KEY_READ:
- case BC_LEX_KEY_SCALE:
- case BC_LEX_KEY_SQRT:
- {
- status = bc_parse_expr(parse, code, BC_PARSE_EXPR_PRINT);
-
- if (status) break;
-
- status = bc_parse_semicolonListEnd(parse, code);
-
- break;
- }
-
- case BC_LEX_KEY_ELSE:
- {
- status = bc_parse_else(parse, code);
- break;
- }
-
- case BC_LEX_RIGHT_BRACE:
- {
- status = bc_parse_endBody(parse, code, true);
- break;
- }
-
- case BC_LEX_STRING:
- {
- status = bc_parse_string(parse, code);
- break;
- }
-
- case BC_LEX_KEY_BREAK:
- case BC_LEX_KEY_CONTINUE:
- {
- status = bc_parse_loopExit(parse, code, parse->token.type);
- break;
- }
-
- case BC_LEX_KEY_FOR:
- {
- status = bc_parse_for(parse, code);
- break;
- }
-
- case BC_LEX_KEY_HALT:
- {
- status = bc_vec_pushByte(code, BC_INST_HALT);
-
- if (status) return status;
-
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status) return status;
-
- status = bc_parse_semicolonListEnd(parse, code);
-
- break;
- }
-
- case BC_LEX_KEY_IF:
- {
- status = bc_parse_if(parse, code);
- break;
- }
-
- case BC_LEX_KEY_LIMITS:
- {
- status = bc_lex_next(&parse->lex, &parse->token);
-
- if (status && status != BC_STATUS_LEX_EOF) return status;
-
- status = bc_parse_semicolonListEnd(parse, code);
-
- if (status && status != BC_STATUS_LEX_EOF) return status;
-
- status = BC_STATUS_PARSE_LIMITS;
-
- break;
- }
-
- case BC_LEX_KEY_PRINT:
- {
- status = bc_parse_print(parse, code);
- break;
- }
-
- case BC_LEX_KEY_QUIT:
- {
- // Quit is a compile-time command,
- // so we send an exit command. We
- // don't exit directly, so the vm
- // can clean up.
- status = BC_STATUS_PARSE_QUIT;
- break;
- }
-
- case BC_LEX_KEY_RETURN:
- {
- status = bc_parse_return(parse, code);
-
- if (status) return status;
-
- status = bc_parse_semicolonListEnd(parse, code);
-
- break;
- }
-
- case BC_LEX_KEY_WHILE:
- {
- status = bc_parse_while(parse, code);
- break;
- }
-
- default:
- {
- status = BC_STATUS_PARSE_INVALID_TOKEN;
- break;
- }
- }
-
- return status;
-}
-
-BcStatus bc_parse_init(BcParse *parse, BcProgram *program) {
-
- BcStatus status;
-
- if (parse == NULL || program == NULL) return BC_STATUS_INVALID_PARAM;
-
- status = bc_vec_init(&parse->flags, sizeof(uint8_t), NULL);
-
- if (status != BC_STATUS_SUCCESS) return status;
-
- status = bc_vec_init(&parse->exit_labels, sizeof(BcInstPtr), NULL);
-
- if (status) goto exit_label_err;
-
- status = bc_vec_init(&parse->cond_labels, sizeof(size_t), NULL);
-
- if (status) goto cond_label_err;
-
- uint8_t flags = 0;
-
- status = bc_vec_push(&parse->flags, &flags);
-
- if (status != BC_STATUS_SUCCESS) goto push_err;
-
- status = bc_vec_init(&parse->ops, sizeof(BcLexTokenType), NULL);
-
- if (status) goto push_err;
-
- parse->program = program;
- parse->func = 0;
- parse->num_braces = 0;
- parse->auto_part = false;
-
- return status;
-
-push_err:
-
- bc_vec_free(&parse->cond_labels);
-
-cond_label_err:
-
- bc_vec_free(&parse->exit_labels);
-
-exit_label_err:
-
- bc_vec_free(&parse->flags);
-
- return status;
-}
-
-BcStatus bc_parse_file(BcParse *parse, const char *file) {
-
- if (parse == NULL || file == NULL) return BC_STATUS_INVALID_PARAM;
-
- return bc_lex_init(&parse->lex, file);
-}
-
-BcStatus bc_parse_text(BcParse *parse, const char *text) {
-
- BcStatus status;
-
- if (parse == NULL || text == NULL) return BC_STATUS_INVALID_PARAM;
-
- status = bc_lex_text(&parse->lex, text);
-
- if (status) return status;
-
- return bc_lex_next(&parse->lex, &parse->token);
-}
-
-BcStatus bc_parse_parse(BcParse *parse) {
-
- BcStatus status;
-
- if (parse == NULL) return BC_STATUS_INVALID_PARAM;
-
- switch (parse->token.type) {
-
- case BC_LEX_NEWLINE:
- {
- status = bc_lex_next(&parse->lex, &parse->token);
- break;
- }
-
- case BC_LEX_KEY_DEFINE:
- {
- if (!BC_PARSE_CAN_EXEC(parse))
- return BC_STATUS_PARSE_INVALID_TOKEN;
-
- status = bc_parse_func(parse);
-
- break;
- }
-
- case BC_LEX_EOF:
- {
- status = BC_STATUS_PARSE_EOF;
- break;
- }
-
- default:
- {
- BcFunc *func;
-
- func = bc_vec_item(&parse->program->funcs, parse->func);
-
- if (!func) return BC_STATUS_EXEC_UNDEFINED_FUNC;
-
- status = bc_parse_stmt(parse, &func->code);
-
- break;
- }
- }
-
- return status;
-}
-
-void bc_parse_free(BcParse *parse) {
-
- if (!parse) {
- return;
- }
-
- bc_vec_free(&parse->flags);
- bc_vec_free(&parse->exit_labels);
- bc_vec_free(&parse->cond_labels);
- bc_vec_free(&parse->ops);
-
- switch (parse->token.type) {
-
- case BC_LEX_STRING:
- case BC_LEX_NAME:
- case BC_LEX_NUMBER:
- {
- if (parse->token.string) {
- free(parse->token.string);
- }
-
- break;
- }
-
- default:
- {
- // We don't have have to free anything.
- break;
- }
- }
-}
-
-BcStatus bc_parse_expr(BcParse *parse, BcVec *code, uint8_t flags) {
-
- BcStatus status;
- uint32_t nexprs, nparens, ops_start, nrelops;
- bool paren_first, paren_expr, rparen, done, get_token, assign;
- BcExprType prev;
- BcLexTokenType type, top;
- BcLexTokenType *ptr;
-
- status = BC_STATUS_SUCCESS;
-
- ops_start = parse->ops.len;
-
- prev = BC_EXPR_PRINT;
-
- paren_first = parse->token.type == BC_LEX_LEFT_PAREN;
-
- nexprs = 0;
- nparens = 0;
- paren_expr = false;
- rparen = false;
- done = false;
- get_token = false;
- assign = false;
- nrelops = 0;
-
- type = parse->token.type;
-
- while (!status && !done && bc_parse_token_exprs[type]) {
-
- switch (type) {
-
- case BC_LEX_OP_INC:
- case BC_LEX_OP_DEC:
- {
- status = bc_parse_incdec(parse, code, &prev, &nexprs, flags);
- rparen = false;
- get_token = false;
- break;
- }
-
- case BC_LEX_OP_MINUS:
- {
- status = bc_parse_minus(parse, code, &parse->ops, &prev,
- rparen, &nexprs);
- rparen = false;
- get_token = false;
- break;
- }
-
- case BC_LEX_OP_ASSIGN_POWER:
- case BC_LEX_OP_ASSIGN_MULTIPLY:
- case BC_LEX_OP_ASSIGN_DIVIDE:
- case BC_LEX_OP_ASSIGN_MODULUS:
- case BC_LEX_OP_ASSIGN_PLUS:
- case BC_LEX_OP_ASSIGN_MINUS:
- case BC_LEX_OP_ASSIGN:
- if (prev != BC_EXPR_VAR && prev != BC_EXPR_ARRAY_ELEM &&
- prev != BC_EXPR_SCALE && prev != BC_EXPR_IBASE &&
- prev != BC_EXPR_OBASE && prev != BC_EXPR_LAST)
- {
- status = BC_STATUS_PARSE_INVALID_ASSIGN;
- break;
- }
- // Fallthrough.
- case BC_LEX_OP_POWER:
- case BC_LEX_OP_MULTIPLY:
- case BC_LEX_OP_DIVIDE:
- case BC_LEX_OP_MODULUS:
- case BC_LEX_OP_PLUS:
- case BC_LEX_OP_REL_EQUAL:
- case BC_LEX_OP_REL_LESS_EQ:
- case BC_LEX_OP_REL_GREATER_EQ:
- case BC_LEX_OP_REL_NOT_EQ:
- case BC_LEX_OP_REL_LESS:
- case BC_LEX_OP_REL_GREATER:
- case BC_LEX_OP_BOOL_NOT:
- case BC_LEX_OP_BOOL_OR:
- case BC_LEX_OP_BOOL_AND:
- {
- if (type >= BC_LEX_OP_REL_EQUAL && type <= BC_LEX_OP_REL_GREATER)
- nrelops += 1;
-
- prev = BC_PARSE_TOKEN_TO_EXPR(type);
- status = bc_parse_operator(parse, code, &parse->ops,
- type, &nexprs, true);
- rparen = false;
- get_token = false;
-
- break;
- }
-
- case BC_LEX_LEFT_PAREN:
- {
- ++nparens;
- paren_expr = false;
- rparen = false;
- get_token = true;
- status = bc_vec_push(&parse->ops, &type);
- break;
- }
-
- case BC_LEX_RIGHT_PAREN:
- {
- if (nparens == 0) {
- status = BC_STATUS_SUCCESS;
- done = true;
- get_token = false;
- break;
- }
- else if (!paren_expr) {
- status = BC_STATUS_PARSE_INVALID_EXPR;
- goto err;
- }
-
- --nparens;
- paren_expr = true;
- rparen = true;
- get_token = false;
-
- status = bc_parse_rightParen(parse, code, &parse->ops, &nexprs);
-
- break;
- }
-
- case BC_LEX_NAME:
- {
- paren_expr = true;
- rparen = false;
- get_token = false;
- status = bc_parse_expr_name(parse, code, &prev,
- flags & ~(BC_PARSE_EXPR_NO_CALL));
- ++nexprs;
- break;
- }
-
- case BC_LEX_NUMBER:
- {
- size_t idx;
-
- idx = parse->program->constants.len;
-
- status = bc_vec_push(&parse->program->constants, &parse->token.string);
-
- if (status) goto err;
-
- status = bc_vec_pushByte(code, BC_INST_PUSH_NUM);
-
- if (status) return status;
-
- status = bc_parse_pushIndex(code, idx);
-
- if (status) return status;
-
- paren_expr = true;
- rparen = false;
- get_token = true;
- ++nexprs;
- prev = BC_EXPR_NUMBER;
-
- break;
- }
-
- case BC_LEX_KEY_IBASE:
- {
- status = bc_vec_pushByte(code, BC_INST_PUSH_IBASE);
-
- paren_expr = true;
- rparen = false;
- get_token = true;
- ++nexprs;
- prev = BC_EXPR_IBASE;
-
- break;
- }
-
- case BC_LEX_KEY_LENGTH:
- case BC_LEX_KEY_SQRT:
- {
- status = bc_parse_builtin(parse, code, type, flags);
- paren_expr = true;
- rparen = false;
- get_token = false;
- ++nexprs;
- prev = type == BC_LEX_KEY_LENGTH ? BC_EXPR_LENGTH : BC_EXPR_SQRT;
- break;
- }
-
- case BC_LEX_KEY_OBASE:
- {
- status = bc_vec_pushByte(code, BC_INST_PUSH_OBASE);
-
- paren_expr = true;
- rparen = false;
- get_token = true;
- ++nexprs;
- prev = BC_EXPR_OBASE;
-
- break;
- }
-
- case BC_LEX_KEY_READ:
- {
- if (flags & BC_PARSE_EXPR_NO_READ)
- status = BC_STATUS_EXEC_RECURSIVE_READ;
- else status = bc_parse_read(parse, code);
-
- paren_expr = true;
- rparen = false;
- get_token = false;
- ++nexprs;
- prev = BC_EXPR_READ;
-
- break;
- }
-
- case BC_LEX_KEY_SCALE:
- {
- status = bc_parse_scale(parse, code, &prev, flags);
- paren_expr = true;
- rparen = false;
- get_token = false;
- ++nexprs;
- prev = BC_EXPR_SCALE;
- break;
- }
-
- default:
- {
- status = BC_STATUS_PARSE_INVALID_TOKEN;
- break;
- }
- }
-
- if (status && status != BC_STATUS_LEX_EOF) goto err;
-
- if (get_token) status = bc_lex_next(&parse->lex, &parse->token);
-
- type = parse->token.type;
- }
-
- if (status && status != BC_STATUS_LEX_EOF) goto err;
-
- status = BC_STATUS_SUCCESS;
-
- while (!status && parse->ops.len > ops_start) {
-
- ptr = bc_vec_top(&parse->ops);
- top = *ptr;
-
- assign = top >= BC_LEX_OP_ASSIGN_POWER && top <= BC_LEX_OP_ASSIGN;
-
- if (top == BC_LEX_LEFT_PAREN || top == BC_LEX_RIGHT_PAREN) {
- status = BC_STATUS_PARSE_INVALID_EXPR;
- goto err;
- }
-
- status = bc_vec_pushByte(code, bc_parse_insts[top - BC_LEX_OP_NEGATE]);
-
- if (status) goto err;
-
- nexprs -= top != BC_LEX_OP_BOOL_NOT && top != BC_LEX_OP_NEGATE ? 1 : 0;
-
- status = bc_vec_pop(&parse->ops);
-
- if (status) goto err;
- }
-
- if (nexprs != 1) {
- status = BC_STATUS_PARSE_INVALID_EXPR;
- goto err;
- }
-
- if (!(flags & BC_PARSE_EXPR_POSIX_REL) && nrelops &&
- (status = bc_posix_error(BC_STATUS_POSIX_REL_OUTSIDE,
- parse->lex.file, parse->lex.line, NULL)))
- {
- goto err;
- }
- else if (nrelops > 1 &&
- (status = bc_posix_error(BC_STATUS_POSIX_REL_OUTSIDE,
- parse->lex.file, parse->lex.line, NULL)))
- {
- goto err;
- }
-
- if (flags & BC_PARSE_EXPR_PRINT) {
- if (paren_first || !assign) status = bc_vec_pushByte(code, BC_INST_PRINT);
- else status = bc_vec_pushByte(code, BC_INST_POP);
- }
-
- return type == BC_LEX_EOF ? BC_STATUS_LEX_EOF : status;
-
-err:
-
- if (parse->token.string) free(parse->token.string);
-
- return status;
-}
-
-BcStatus bc_program_searchVec(const BcVec *vec, const BcResult *result,
- BcNum **ret, uint8_t flags)
-{
- BcStatus status;
- BcAuto *a;
- size_t i;
-
- for (i = 0; i < vec->len; ++i) {
-
- a = bc_vec_item(vec, i);
-
- if (!a) return BC_STATUS_EXEC_UNDEFINED_VAR;
-
- if (!strcmp(a->name, result->data.id.name)) {
-
- uint8_t cond;
-
- cond = flags & BC_PROGRAM_SEARCH_VAR;
-
- if (!a->var != !cond)
- return BC_STATUS_EXEC_INVALID_TYPE;
-
- if (cond) *ret = &a->data.num;
- else if (flags & BC_PROGRAM_SEARCH_ARRAY_ONLY)
- *ret = (BcNum*) &a->data.array;
- else {
-
- status = bc_array_expand(&a->data.array, result->data.id.idx + 1);
-
- if (status) return status;
-
- *ret = bc_vec_item(&a->data.array, result->data.id.idx);
- }
-
- return BC_STATUS_SUCCESS;
- }
- }
-
- return BC_STATUS_EXEC_UNDEFINED_VAR;
-}
-
-BcStatus bc_program_search(BcProgram *p, BcResult *result,
- BcNum **ret, uint8_t flags)
-{
- BcStatus status;
- BcFunc *func;
- BcInstPtr *ip;
- BcEntry entry;
- BcVec *vec;
- BcVecO *veco;
- size_t idx;
- BcEntry *entry_ptr;
-
- // We use this as either a number or an array, since
- // a BcAuto has a union inside that has both.
- BcAuto a;
-
- ip = bc_vec_top(&p->stack);
-
- if (!ip) return BC_STATUS_EXEC_INVALID_STACK;
-
- if (ip->func == BC_PROGRAM_READ_FUNC) {
- ip = bc_vec_item_rev(&p->stack, 1);
- if (!ip) return BC_STATUS_EXEC_INVALID_STACK;
- }
-
- if (ip->func != BC_PROGRAM_MAIN_FUNC) {
-
- func = bc_vec_item(&p->funcs, ip->func);
-
- if (!func) return BC_STATUS_EXEC_INVALID_STACK;
-
- status = bc_program_searchVec(&func->params, result, ret, flags);
-
- if (status != BC_STATUS_EXEC_UNDEFINED_VAR) return status;
-
- status = bc_program_searchVec(&func->autos, result, ret, flags);
-
- if (status != BC_STATUS_EXEC_UNDEFINED_VAR) return status;
- }
-
- vec = (flags & BC_PROGRAM_SEARCH_VAR) ? &p->vars : &p->arrays;
- veco = (flags & BC_PROGRAM_SEARCH_VAR) ? &p->var_map : &p->array_map;
-
- entry.name = result->data.id.name;
- entry.idx = vec->len;
-
- status = bc_veco_insert(veco, &entry, &idx);
-
- if (status != BC_STATUS_VECO_ITEM_EXISTS) {
-
- size_t len;
-
- if (status) return status;
-
- len = strlen(entry.name) + 1;
-
- result->data.id.name = malloc(len);
-
- if (!result->data.id.name) return BC_STATUS_MALLOC_FAIL;
-
- strcpy(result->data.id.name, entry.name);
-
- status = bc_auto_init(&a, NULL, flags & BC_PROGRAM_SEARCH_VAR);
-
- if (status) return status;
-
- status = bc_vec_push(vec, &a.data);
-
- if (status) return status;
- }
-
- entry_ptr = bc_veco_item(veco, idx);
-
- if (!entry_ptr) return BC_STATUS_VECO_OUT_OF_BOUNDS;
-
- if (flags & BC_PROGRAM_SEARCH_VAR) {
- *ret = bc_vec_item(vec, entry_ptr->idx);
- if (!(*ret)) return BC_STATUS_EXEC_UNDEFINED_VAR;
- }
- else {
-
- BcArray *aptr;
-
- aptr = bc_vec_item(vec, entry_ptr->idx);
-
- if (!aptr) return BC_STATUS_EXEC_UNDEFINED_ARRAY;
-
- if (flags & BC_PROGRAM_SEARCH_ARRAY_ONLY) {
- *ret = (BcNum*) aptr;
- return BC_STATUS_SUCCESS;
- }
-
- status = bc_array_expand(aptr, result->data.id.idx + 1);
-
- if (status) return status;
-
- *ret = bc_vec_item(aptr, result->data.id.idx);
- }
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_program_num(BcProgram *p, BcResult *result,
- BcNum** num, bool ibase)
-{
-
- BcStatus status;
-
- status = BC_STATUS_SUCCESS;
-
- switch (result->type) {
-
- case BC_RESULT_INTERMEDIATE:
- case BC_RESULT_SCALE:
- {
- *num = &result->data.num;
- break;
- }
-
- case BC_RESULT_CONSTANT:
- {
- char** s;
- size_t idx;
- size_t len;
- size_t base;
-
- idx = result->data.id.idx;
-
- s = bc_vec_item(&p->constants, idx);
-
- if (!s) return BC_STATUS_EXEC_INVALID_CONSTANT;
-
- len = strlen(*s);
-
- status = bc_num_init(&result->data.num, len);
-
- if (status) return status;
-
- base = ibase && len == 1 ? 16 : p->ibase_t;
-
- status = bc_num_parse(&result->data.num, *s, &p->ibase, base);
-
- if (status) return status;
-
- *num = &result->data.num;
-
- result->type = BC_RESULT_INTERMEDIATE;
-
- break;
- }
-
- case BC_RESULT_VAR:
- case BC_RESULT_ARRAY:
- {
- uint8_t flags;
-
- flags = result->type == BC_RESULT_VAR ? BC_PROGRAM_SEARCH_VAR : 0;
-
- status = bc_program_search(p, result, num, flags);
-
- break;
- }
-
- case BC_RESULT_LAST:
- {
- *num = &p->last;
- break;
- }
-
- case BC_RESULT_IBASE:
- {
- *num = &p->ibase;
- break;
- }
-
- case BC_RESULT_OBASE:
- {
- *num = &p->obase;
- break;
- }
-
- case BC_RESULT_ONE:
- {
- *num = &p->one;
- break;
- }
-
- default:
- {
- status = BC_STATUS_EXEC_INVALID_EXPR;
- break;
- }
- }
-
- return status;
-}
-
-BcStatus bc_program_binaryOpPrep(BcProgram *p, BcResult **left,
- BcNum **lval, BcResult **right,
- BcNum **rval)
-{
- BcStatus status;
- BcResult *l;
- BcResult *r;
-
- if (!BC_PROGRAM_CHECK_EXPR_STACK(p, 2)) return BC_STATUS_EXEC_INVALID_EXPR;
-
- r = bc_vec_item_rev(&p->expr_stack, 0);
- l = bc_vec_item_rev(&p->expr_stack, 1);
-
- if (!r || !l) return BC_STATUS_EXEC_INVALID_EXPR;
-
- status = bc_program_num(p, l, lval, false);
-
- if (status) return status;
-
- status = bc_program_num(p, r, rval, l->type == BC_RESULT_IBASE);
-
- if (status) return status;
-
- *left = l;
- *right = r;
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_program_binaryOpRetire(BcProgram *p, BcResult *result,
- BcResultType type)
-{
- BcStatus status;
-
- result->type = type;
-
- status = bc_vec_pop(&p->expr_stack);
-
- if (status) return status;
-
- status = bc_vec_pop(&p->expr_stack);
-
- if (status) return status;
-
- return bc_vec_push(&p->expr_stack, result);
-}
-
-BcStatus bc_program_unaryOpPrep(BcProgram *p, BcResult **result,
- BcNum **val)
-{
- BcStatus status;
- BcResult *r;
-
- if (!BC_PROGRAM_CHECK_EXPR_STACK(p, 1)) return BC_STATUS_EXEC_INVALID_EXPR;
-
- r = bc_vec_item_rev(&p->expr_stack, 0);
-
- if (!r) return BC_STATUS_EXEC_INVALID_EXPR;
-
- status = bc_program_num(p, r, val, false);
-
- if (status) return status;
-
- *result = r;
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_program_unaryOpRetire(BcProgram *p, BcResult *result,
- BcResultType type)
-{
- BcStatus status;
-
- result->type = type;
-
- status = bc_vec_pop(&p->expr_stack);
-
- if (status) return status;
-
- return bc_vec_push(&p->expr_stack, result);
-}
-
-BcStatus bc_program_op(BcProgram *p, uint8_t inst) {
-
- BcStatus status;
- BcResult *operand1;
- BcResult *operand2;
- BcResult result;
- BcNum *num1;
- BcNum *num2;
-
- status = bc_program_binaryOpPrep(p, &operand1, &num1, &operand2, &num2);
-
- if (status) return status;
-
- status = bc_num_init(&result.data.num, BC_NUM_DEF_SIZE);
-
- if (status) return status;
-
- if (inst != BC_INST_OP_POWER) {
-
- BcNumBinaryFunc op;
-
- op = bc_program_math_ops[inst - BC_INST_OP_MODULUS];
-
- status = op(num1, num2, &result.data.num, p->scale);
- }
- else status = bc_num_pow(num1, num2, &result.data.num, p->scale);
-
- if (status) goto err;
-
- status = bc_program_binaryOpRetire(p, &result, BC_RESULT_INTERMEDIATE);
-
- if (status) goto err;
-
- return status;
-
-err:
-
- bc_num_free(&result.data.num);
-
- return status;
-}
-
-BcStatus bc_program_read(BcProgram *p) {
-
- BcStatus status;
- BcParse parse;
- char *buffer;
- size_t size;
- BcFunc *func;
- BcInstPtr ip;
-
- func = bc_vec_item(&p->funcs, BC_PROGRAM_READ_FUNC);
-
- if (!func) return BC_STATUS_EXEC_UNDEFINED_FUNC;
-
- func->code.len = 0;
-
- buffer = malloc(BC_PROGRAM_BUF_SIZE + 1);
-
- if (!buffer) return BC_STATUS_MALLOC_FAIL;
-
- size = BC_PROGRAM_BUF_SIZE;
-
- status = bc_io_getline(&buffer, &size);
-
- if (status) goto io_err;
-
- status = bc_parse_init(&parse, p);
-
- if (status) goto io_err;
-
- status = bc_parse_file(&parse, "<stdin>");
-
- if (status) goto exec_err;
-
- status = bc_parse_text(&parse, buffer);
-
- if (status) goto exec_err;
-
- status = bc_parse_expr(&parse, &func->code, BC_PARSE_EXPR_NO_READ);
-
- if (status != BC_STATUS_LEX_EOF &&
- status != BC_STATUS_PARSE_EOF &&
- parse.token.type != BC_LEX_NEWLINE)
- {
- status = status ? status : BC_STATUS_EXEC_INVALID_READ_EXPR;
- goto exec_err;
- }
-
- ip.func = BC_PROGRAM_READ_FUNC;
- ip.idx = 0;
- ip.len = p->expr_stack.len;
-
- status = bc_vec_push(&p->stack, &ip);
-
- if (status) goto exec_err;
-
- status = bc_program_exec(p);
-
- if (status) goto exec_err;
-
- status = bc_vec_pop(&p->stack);
-
-exec_err:
-
- bc_parse_free(&parse);
-
-io_err:
-
- free(buffer);
-
- return status;
-}
-
-size_t bc_program_index(uint8_t *code, size_t *start) {
-
- uint8_t bytes;
- uint8_t byte, i;
- size_t result;
-
- bytes = code[(*start)++];
- byte = 1;
-
- result = 0;
-
- for (i = 0; byte && i < bytes; ++i) {
- byte = code[(*start)++];
- result |= (((size_t) byte) << (i * 8));
- }
-
- return result;
-}
-
-char* bc_program_name(uint8_t *code, size_t *start) {
-
- char byte;
- char *s;
- char *string;
- char *ptr;
- size_t len;
- size_t i;
-
- string = (char*) (code + *start);
-
- ptr = strchr((char*) string, ':');
-
- if (ptr) len = ((unsigned long) ptr) - ((unsigned long) string);
- else len = strlen(string);
-
- s = malloc(len + 1);
-
- if (!s) return NULL;
-
- byte = code[(*start)++];
- i = 0;
-
- while (byte && byte != ':') {
- s[i++] = byte;
- byte = code[(*start)++];
- }
-
- s[i] = '\0';
-
- return s;
-}
-
-BcStatus bc_program_printIndex(uint8_t *code, size_t *start) {
-
- uint8_t bytes;
- uint8_t byte, i;
-
- bytes = code[(*start)++];
- byte = 1;
-
- if (printf(bc_program_byte_fmt, bytes) < 0) return BC_STATUS_IO_ERR;
-
- for (i = 0; byte && i < bytes; ++i) {
- byte = code[(*start)++];
- if (printf(bc_program_byte_fmt, byte) < 0) return BC_STATUS_IO_ERR;
- }
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_program_printName(uint8_t *code, size_t *start) {
-
- BcStatus status;
- char byte;
-
- status = BC_STATUS_SUCCESS;
- byte = code[(*start)++];
-
- while (byte && byte != ':') {
- if (putchar(byte) == EOF) return BC_STATUS_IO_ERR;
- byte = code[(*start)++];
- }
-
- if (byte) {
- if (putchar(byte) == EOF) status = BC_STATUS_IO_ERR;
- }
- else status = BC_STATUS_PARSE_BUG;
-
- return status;
-}
-
-BcStatus bc_program_printString(const char *str) {
-
- char c;
- char c2;
- size_t len, i;
- int err;
-
- err = 0;
-
- len = strlen(str);
-
- for (i = 0; i < len; ++i) {
-
- c = str[i];
-
- if (c != '\\') err = fputc(c, stdout);
- else {
-
- ++i;
-
- if (i >= len) return BC_STATUS_EXEC_INVALID_STRING;
-
- c2 = str[i];
-
- switch (c2) {
-
- case 'a':
- {
- err = fputc('\a', stdout);
- break;
- }
-
- case 'b':
- {
- err = fputc('\b', stdout);
- break;
- }
-
- case 'e':
- {
- err = fputc('\\', stdout);
- break;
- }
-
- case 'f':
- {
- err = fputc('\f', stdout);
- break;
- }
-
- case 'n':
- {
- err = fputc('\n', stdout);
- break;
- }
-
- case 'r':
- {
- err = fputc('\r', stdout);
- break;
- }
-
- case 'q':
- {
- fputc('"', stdout);
- break;
- }
-
- case 't':
- {
- err = fputc('\t', stdout);
- break;
- }
-
- default:
- {
- // Do nothing.
- err = 0;
- break;
- }
- }
- }
-
- if (err == EOF) return BC_STATUS_EXEC_PRINT_ERR;
- }
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_program_push(BcProgram *p, uint8_t *code,
- size_t *start, bool var)
-{
- BcStatus status;
- BcResult result;
- char *s;
-
- s = bc_program_name(code, start);
-
- if (!s) return BC_STATUS_EXEC_UNDEFINED_VAR;
-
- result.data.id.name = s;
-
- if (var) {
- result.type = BC_RESULT_VAR;
- status = bc_vec_push(&p->expr_stack, &result);
- }
- else {
-
- BcResult *operand;
- BcNum *num;
- unsigned long temp;
-
- status = bc_program_unaryOpPrep(p, &operand, &num);
-
- if (status) goto err;
-
- status = bc_num_ulong(num, &temp);
-
- if (status) goto err;
-
- result.data.id.idx = (size_t) temp;
-
- status = bc_program_unaryOpRetire(p, &result, BC_RESULT_ARRAY);
- }
-
- if (status) goto err;
-
- return status;
-
-err:
-
- free(s);
-
- return status;
-}
-
-BcStatus bc_program_negate(BcProgram *p) {
-
- BcStatus status;
- BcResult result;
- BcResult *ptr;
- BcNum *num;
-
- status = bc_program_unaryOpPrep(p, &ptr, &num);
-
- if (status) return status;
-
- status = bc_num_init(&result.data.num, num->len);
-
- if (status) return status;
-
- status = bc_num_copy(&result.data.num, num);
-
- if (status) goto err;
-
- result.data.num.neg = !result.data.num.neg;
-
- status = bc_program_unaryOpRetire(p, &result, BC_RESULT_INTERMEDIATE);
-
- if (status) goto err;
-
- return status;
-
-err:
-
- bc_num_free(&result.data.num);
-
- return status;
-}
-
-BcStatus bc_program_logical(BcProgram *p, uint8_t inst) {
-
- BcStatus status;
- BcResult *operand1;
- BcResult *operand2;
- BcNum *num1;
- BcNum *num2;
- BcResult result;
- BcNumInitFunc init;
- bool cond;
- int cmp;
-
- status = bc_program_binaryOpPrep(p, &operand1, &num1, &operand2, &num2);
-
- if (status) return status;
-
- status = bc_num_init(&result.data.num, BC_NUM_DEF_SIZE);
-
- if (status) return status;
-
- if (inst == BC_INST_OP_BOOL_AND)
- cond = bc_num_compare(num1, &p->zero) && bc_num_compare(num2, &p->zero);
- else if (inst == BC_INST_OP_BOOL_OR)
- cond = bc_num_compare(num1, &p->zero) || bc_num_compare(num2, &p->zero);
- else {
-
- cmp = bc_num_compare(num1, num2);
-
- switch (inst) {
- case BC_INST_OP_REL_EQUAL:
- {
- cond = cmp == 0;
- break;
- }
-
- case BC_INST_OP_REL_LESS_EQ:
- {
- cond = cmp <= 0;
- break;
- }
-
- case BC_INST_OP_REL_GREATER_EQ:
- {
- cond = cmp >= 0;
- break;
- }
-
- case BC_INST_OP_REL_NOT_EQ:
- {
- cond = cmp != 0;
- break;
- }
-
- case BC_INST_OP_REL_LESS:
- {
- cond = cmp < 0;
- break;
- }
-
- case BC_INST_OP_REL_GREATER:
- {
- cond = cmp > 0;
- break;
- }
-
- default:
- {
- return BC_STATUS_EXEC_INVALID_EXPR;
- }
- }
- }
-
- init = cond ? bc_num_one : bc_num_zero;
- init(&result.data.num);
-
- status = bc_program_binaryOpRetire(p, &result, BC_RESULT_INTERMEDIATE);
-
- if (status) goto err;
-
- return status;
-
-err:
-
- bc_num_free(&result.data.num);
-
- return status;
-}
-
-BcNumBinaryFunc bc_program_assignOp(uint8_t inst) {
-
- switch (inst) {
-
- case BC_INST_OP_ASSIGN_POWER:
- {
- return bc_num_pow;
- }
-
- case BC_INST_OP_ASSIGN_MULTIPLY:
- {
- return bc_num_mul;
- }
-
- case BC_INST_OP_ASSIGN_DIVIDE:
- {
- return bc_num_div;
- }
-
- case BC_INST_OP_ASSIGN_MODULUS:
- {
- return bc_num_mod;
- }
-
- case BC_INST_OP_ASSIGN_PLUS:
- {
- return bc_num_add;
- }
-
- case BC_INST_OP_ASSIGN_MINUS:
- {
- return bc_num_sub;
- }
-
- default:
- {
- return NULL;
- }
- }
-}
-
-BcStatus bc_program_assignScale(BcProgram *p, BcNum *scale,
- BcNum *rval, uint8_t inst)
-{
- BcStatus status;
- unsigned long result;
-
- switch (inst) {
-
- case BC_INST_OP_ASSIGN_POWER:
- case BC_INST_OP_ASSIGN_MULTIPLY:
- case BC_INST_OP_ASSIGN_DIVIDE:
- case BC_INST_OP_ASSIGN_MODULUS:
- case BC_INST_OP_ASSIGN_PLUS:
- case BC_INST_OP_ASSIGN_MINUS:
- {
- BcNumBinaryFunc op;
-
- op = bc_program_assignOp(inst);
-
- status = op(scale, rval, scale, p->scale);
-
- if (status) return status;
-
- break;
- }
-
- case BC_INST_OP_ASSIGN:
- {
- status = bc_num_copy(scale, rval);
- if (status) return status;
- break;
- }
-
- default:
- {
- return BC_STATUS_EXEC_INVALID_EXPR;
- }
- }
-
- status = bc_num_ulong(scale, &result);
-
- if (status) return status;
-
- p->scale = (size_t) result;
-
- return status;
-}
-
-BcStatus bc_program_assign(BcProgram *p, uint8_t inst) {
-
- BcStatus status;
- BcResult *left;
- BcResult *right;
- BcResult result;
- BcNum *lval;
- BcNum *rval;
-
- status = bc_program_binaryOpPrep(p, &left, &lval, &right, &rval);
-
- if (status) return status;
-
- if (left->type == BC_RESULT_CONSTANT || left->type == BC_RESULT_INTERMEDIATE)
- return BC_STATUS_EXEC_INVALID_LVALUE;
-
- if (inst == BC_EXPR_ASSIGN_DIVIDE && !bc_num_compare(rval, &p->zero))
- return BC_STATUS_MATH_DIVIDE_BY_ZERO;
-
- if (left->type != BC_RESULT_SCALE) {
-
- if (status) return status;
-
- switch (inst) {
-
- case BC_INST_OP_ASSIGN_POWER:
- case BC_INST_OP_ASSIGN_MULTIPLY:
- case BC_INST_OP_ASSIGN_DIVIDE:
- case BC_INST_OP_ASSIGN_MODULUS:
- case BC_INST_OP_ASSIGN_PLUS:
- case BC_INST_OP_ASSIGN_MINUS:
- {
- BcNumBinaryFunc op;
-
- op = bc_program_assignOp(inst);
- status = op(lval, rval, lval, p->scale);
-
- break;
- }
-
- case BC_INST_OP_ASSIGN:
- {
- status = bc_num_copy(lval, rval);
- break;
- }
-
- default:
- {
- status = BC_STATUS_EXEC_INVALID_EXPR;
- break;
- }
- }
-
- if (status) return status;
-
- if (left->type == BC_RESULT_IBASE || left->type == BC_RESULT_OBASE) {
-
- unsigned long base;
- size_t *ptr;
-
- ptr = left->type == BC_RESULT_IBASE ? &p->ibase_t : &p->obase_t;
-
- status = bc_num_ulong(lval, &base);
-
- if (status) return status;
-
- *ptr = (size_t) base;
- }
- }
- else {
- status = bc_program_assignScale(p, lval, rval, inst);
- if (status) return status;
- }
-
- status = bc_num_init(&result.data.num, lval->len);
-
- if (status) return status;
-
- status = bc_num_copy(&result.data.num, lval);
-
- if (status) goto err;
-
- status = bc_program_binaryOpRetire(p, &result, BC_RESULT_INTERMEDIATE);
-
- if (status) goto err;
-
- return status;
-
-err:
-
- bc_num_free(&result.data.num);
-
- return status;
-}
-
-BcStatus bc_program_call(BcProgram *p, uint8_t *code, size_t *idx) {
-
- BcStatus status;
- BcInstPtr ip;
- size_t nparams;
- BcFunc *func;
- BcAuto *auto_ptr;
- BcResult *param;
- size_t i;
-
- nparams = bc_program_index(code, idx);
-
- ip.idx = 0;
- ip.len = p->expr_stack.len;
-
- ip.func = bc_program_index(code, idx);
-
- func = bc_vec_item(&p->funcs, ip.func);
-
- if (!func) return BC_STATUS_EXEC_UNDEFINED_FUNC;
-
- if (func->params.len != nparams) return BC_STATUS_EXEC_MISMATCHED_PARAMS;
-
- for (i = 0; i < func->autos.len; ++i) {
-
- auto_ptr = bc_vec_item(&func->autos, i);
-
- if (!auto_ptr) return BC_STATUS_EXEC_UNDEFINED_VAR;
-
- if (auto_ptr->var) bc_num_zero(&auto_ptr->data.num);
- else {
- status = bc_array_zero(&auto_ptr->data.array);
- if (status) return status;
- }
- }
-
- for (i = 0; i < func->params.len; ++i) {
-
- auto_ptr = bc_vec_item_rev(&func->params, i);
- param = bc_vec_item_rev(&p->expr_stack, i);
-
- if (!auto_ptr || !param) return BC_STATUS_EXEC_UNDEFINED_VAR;
-
- if (auto_ptr->var) {
-
- BcNum *num;
-
- status = bc_program_num(p, param, &num, false);
-
- if (status) return status;
-
- status = bc_num_copy(&auto_ptr->data.num, num);
- }
- else {
-
- BcArray *array;
-
- if (param->type != BC_RESULT_VAR || param->type != BC_RESULT_ARRAY)
- return BC_STATUS_EXEC_INVALID_TYPE;
-
- status = bc_program_search(p, param, (BcNum**) &array,
- BC_PROGRAM_SEARCH_ARRAY_ONLY);
-
- if (status) return status;
-
- status = bc_array_copy(&auto_ptr->data.array, array);
- }
-
- if (status) return status;
- }
-
- return bc_vec_push(&p->stack, &ip);
-}
-
-BcStatus bc_program_return(BcProgram *p, uint8_t inst) {
-
- BcStatus status;
- BcResult result;
- BcResult *operand;
- size_t req;
- BcInstPtr *ip;
- BcFunc *func;
- size_t len;
-
- if (!BC_PROGRAM_CHECK_STACK(p)) return BC_STATUS_EXEC_INVALID_RETURN;
-
- ip = bc_vec_top(&p->stack);
-
- if (!ip) return BC_STATUS_EXEC_INVALID_STACK;
-
- req = ip->len + (inst == BC_INST_RETURN ? 1 : 0);
-
- if (!BC_PROGRAM_CHECK_EXPR_STACK(p, req))
- return BC_STATUS_EXEC_INVALID_EXPR;
-
- func = bc_vec_item(&p->funcs, ip->func);
-
- if (!func) return BC_STATUS_EXEC_INVALID_STMT;
-
- result.type = BC_RESULT_INTERMEDIATE;
-
- if (inst == BC_INST_RETURN) {
-
- BcNum *num;
-
- operand = bc_vec_top(&p->expr_stack);
-
- if (!operand) return BC_STATUS_EXEC_INVALID_EXPR;
-
- status = bc_program_num(p, operand, &num, false);
-
- if (status) return status;
-
- status = bc_num_init(&result.data.num, num->len);
-
- if (status) return status;
-
- status = bc_num_copy(&result.data.num, num);
-
- if (status) goto err;
- }
- else {
-
- status = bc_num_init(&result.data.num, BC_NUM_DEF_SIZE);
-
- if (status) return status;
-
- bc_num_zero(&result.data.num);
- }
-
- // We need to pop arguments as well, so this takes that into account.
- len = ip->len - func->params.len;
- while (p->expr_stack.len > len) {
- status = bc_vec_pop(&p->expr_stack);
- if (status) goto err;
- }
-
- status = bc_vec_push(&p->expr_stack, &result);
-
- if (status) goto err;
-
- return bc_vec_pop(&p->stack);
-
-err:
-
- bc_num_free(&result.data.num);
-
- return status;
-}
-
-unsigned long bc_program_scale(BcNum *n) {
- return (unsigned long) n->rdx;
-}
-
-unsigned long bc_program_length(BcNum *n) {
- return (unsigned long) n->len;
-}
-
-BcStatus bc_program_builtin(BcProgram *p, uint8_t inst) {
-
- BcStatus status;
- BcResult *operand;
- BcNum *num1;
- BcResult result;
-
- status = bc_program_unaryOpPrep(p, &operand, &num1);
-
- if (status) return status;
-
- status = bc_num_init(&result.data.num, BC_NUM_DEF_SIZE);
-
- if (status) return status;
-
- if (inst == BC_INST_SQRT) {
- status = bc_num_sqrt(num1, &result.data.num, p->scale);
- }
- else {
-
- BcProgramBuiltInFunc func;
- unsigned long ans;
-
- func = inst == BC_INST_LENGTH ? bc_program_length : bc_program_scale;
-
- ans = func(num1);
-
- status = bc_num_ulong2num(&result.data.num, ans);
- }
-
- if (status) goto err;
-
- status = bc_program_unaryOpRetire(p, &result, BC_RESULT_INTERMEDIATE);
-
- if (status) goto err;
-
- return status;
-
-err:
-
- bc_num_free(&result.data.num);
-
- return status;
-}
-
-BcStatus bc_program_pushScale(BcProgram *p) {
-
- BcStatus status;
- BcResult result;
-
- result.type = BC_RESULT_SCALE;
- status = bc_num_init(&result.data.num, BC_NUM_DEF_SIZE);
-
- if (status) return status;
-
- status = bc_num_ulong2num(&result.data.num, (unsigned long) p->scale);
-
- if (status) goto err;
-
- status = bc_vec_push(&p->expr_stack, &result);
-
- if (status) goto err;
-
- return status;
-
-err:
-
- bc_num_free(&result.data.num);
-
- return status;
-}
-
-BcStatus bc_program_incdec(BcProgram *p, uint8_t inst) {
-
- BcStatus status;
- BcResult *ptr;
- BcNum *num;
- BcResult copy;
- uint8_t inst2;
- BcResult result;
-
- status = bc_program_unaryOpPrep(p, &ptr, &num);
-
- if (status) return status;
-
- inst2 = inst == BC_INST_INC || inst == BC_INST_INC_DUP ?
- BC_INST_OP_ASSIGN_PLUS : BC_INST_OP_ASSIGN_MINUS;
-
- if (inst == BC_INST_INC_DUP || inst == BC_INST_DEC_DUP) {
- copy.type = BC_RESULT_INTERMEDIATE;
- status = bc_num_init(&copy.data.num, num->len);
- if (status) return status;
- }
-
- result.type = BC_RESULT_ONE;
-
- status = bc_vec_push(&p->expr_stack, &result);
-
- if (status) goto err;
-
- status = bc_program_assign(p, inst2);
-
- if (status) goto err;
-
- if (inst == BC_INST_INC_DUP || inst == BC_INST_DEC_DUP) {
-
- status = bc_vec_pop(&p->expr_stack);
-
- if (status) goto err;
-
- status = bc_vec_push(&p->expr_stack, &copy);
-
- if (status) goto err;
- }
-
- return status;
-
-err:
-
- if (inst == BC_INST_INC_DUP || inst == BC_INST_DEC_DUP)
- bc_num_free(&copy.data.num);
-
- return status;
-}
-
-BcStatus bc_program_init(BcProgram *p) {
-
- BcStatus s;
- size_t idx;
- char *name;
- char *read_name;
- BcInstPtr ip;
-
- if (p == NULL) return BC_STATUS_INVALID_PARAM;
-
- name = NULL;
-
-#ifdef _POSIX_BC_BASE_MAX
- p->base_max = _POSIX_BC_BASE_MAX;
-#elif defined(_BC_BASE_MAX)
- p->base_max = _BC_BASE_MAX;
-#else
- errno = 0;
- p->base_max = sysconf(_SC_BC_BASE_MAX);
-
- if (p->base_max == -1) {
- if (errno) return BC_STATUS_NO_LIMIT;
- p->base_max = BC_BASE_MAX_DEF;
- }
- else if (p->base_max > BC_BASE_MAX_DEF) return BC_STATUS_INVALID_LIMIT;
-#endif
-
-#ifdef _POSIX_BC_DIM_MAX
- p->dim_max = _POSIX_BC_DIM_MAX;
-#elif defined(_BC_DIM_MAX)
- p->dim_max = _BC_DIM_MAX;
-#else
- errno = 0;
- p->dim_max = sysconf(_SC_BC_DIM_MAX);
-
- if (p->dim_max == -1) {
- if (errno) return BC_STATUS_NO_LIMIT;
- p->dim_max = BC_DIM_MAX_DEF;
- }
- else if (p->dim_max > BC_DIM_MAX_DEF) return BC_STATUS_INVALID_LIMIT;
-#endif
-
-#ifdef _POSIX_BC_SCALE_MAX
- p->scale_max = _POSIX_BC_SCALE_MAX;
-#elif defined(_BC_SCALE_MAX)
- p->scale_max = _BC_SCALE_MAX;
-#else
- errno = 0;
- p->scale_max = sysconf(_SC_BC_SCALE_MAX);
-
- if (p->scale_max == -1) {
- if (errno) return BC_STATUS_NO_LIMIT;
- p->scale_max = BC_SCALE_MAX_DEF;
- }
- else if (p->scale_max > BC_SCALE_MAX_DEF) return BC_STATUS_INVALID_LIMIT;
-#endif
-
-#ifdef _POSIX_BC_STRING_MAX
- p->string_max = _POSIX_BC_STRING_MAX;
-#elif defined(_BC_STRING_MAX)
- p->string_max = _BC_STRING_MAX;
-#else
- errno = 0;
- p->string_max = sysconf(_SC_BC_STRING_MAX);
-
- if (p->string_max == -1) {
- if (errno) return BC_STATUS_NO_LIMIT;
- p->string_max = BC_STRING_MAX_DEF;
- }
- else if (p->string_max > BC_STRING_MAX_DEF) return BC_STATUS_INVALID_LIMIT;
-#endif
-
- p->scale = 0;
-
- s = bc_num_init(&p->ibase, BC_NUM_DEF_SIZE);
-
- if (s) return s;
-
- bc_num_ten(&p->ibase);
- p->ibase_t = 10;
-
- s = bc_num_init(&p->obase, BC_NUM_DEF_SIZE);
-
- if (s) goto obase_err;
-
- bc_num_ten(&p->obase);
- p->obase_t = 10;
-
- s = bc_num_init(&p->last, BC_NUM_DEF_SIZE);
-
- if (s) goto last_err;
-
- bc_num_zero(&p->last);
-
- s = bc_num_init(&p->zero, BC_NUM_DEF_SIZE);
-
- if (s) goto zero_err;
-
- bc_num_zero(&p->zero);
-
- s = bc_num_init(&p->one, BC_NUM_DEF_SIZE);
-
- if (s) goto one_err;
-
- bc_num_one(&p->one);
-
- p->num_buf = malloc(BC_PROGRAM_BUF_SIZE + 1);
-
- if (!p->num_buf) {
- s = BC_STATUS_MALLOC_FAIL;
- goto num_buf_err;
- }
-
- p->buf_size = BC_PROGRAM_BUF_SIZE;
-
- s = bc_vec_init(&p->funcs, sizeof(BcFunc), bc_func_free);
-
- if (s) goto func_err;
-
- s = bc_veco_init(&p->func_map, sizeof(BcEntry), bc_entry_free, bc_entry_cmp);
-
- if (s) goto func_map_err;
-
- name = malloc(strlen(bc_lang_func_main) + 1);
-
- if (!name) {
- s = BC_STATUS_MALLOC_FAIL;
- goto name_err;
- }
-
- strcpy(name, bc_lang_func_main);
-
- s = bc_program_func_add(p, name, &idx);
-
- name = NULL;
-
- if (s || idx != BC_PROGRAM_MAIN_FUNC) goto read_err;
-
- read_name = malloc(strlen(bc_lang_func_read) + 1);
-
- if (!read_name) {
- s = BC_STATUS_MALLOC_FAIL;
- goto read_err;
- }
-
- strcpy(read_name, bc_lang_func_read);
-
- s = bc_program_func_add(p, read_name, &idx);
-
- read_name = NULL;
-
- if (s || idx != BC_PROGRAM_READ_FUNC) goto var_err;
-
- s = bc_vec_init(&p->vars, sizeof(BcVar), bc_var_free);
-
- if (s) goto var_err;
-
- s = bc_veco_init(&p->var_map, sizeof(BcEntry), bc_entry_free, bc_entry_cmp);
-
- if (s) goto var_map_err;
-
- s = bc_vec_init(&p->arrays, sizeof(BcArray), bc_array_free);
-
- if (s) goto array_err;
-
- s = bc_veco_init(&p->array_map, sizeof(BcEntry), bc_entry_free, bc_entry_cmp);
-
- if (s) goto array_map_err;
-
- s = bc_vec_init(&p->strings, sizeof(char*), bc_string_free);
-
- if (s) goto string_err;
-
- s = bc_vec_init(&p->constants, sizeof(char*), bc_constant_free);
-
- if (s) goto const_err;
-
- s = bc_vec_init(&p->expr_stack, sizeof(BcResult), bc_result_free);
-
- if (s) goto expr_err;
-
- s = bc_vec_init(&p->stack, sizeof(BcInstPtr), NULL);
-
- if (s) goto stack_err;
-
- ip.idx = 0;
- ip.func = 0;
- ip.len = 0;
-
- s = bc_vec_push(&p->stack, &ip);
-
- if (s) goto push_err;
-
- return s;
-
-push_err:
-
- bc_vec_free(&p->stack);
-
-stack_err:
-
- bc_vec_free(&p->expr_stack);
-
-expr_err:
-
- bc_vec_free(&p->constants);
-
-const_err:
-
- bc_vec_free(&p->strings);
-
-string_err:
-
- bc_veco_free(&p->array_map);
-
-array_map_err:
-
- bc_vec_free(&p->arrays);
-
-array_err:
-
- bc_veco_free(&p->var_map);
-
-var_map_err:
-
- bc_vec_free(&p->vars);
-
-var_err:
-
- if (read_name) free(read_name);
-
-read_err:
-
- if (name) free(name);
-
-name_err:
-
- bc_veco_free(&p->func_map);
-
-func_map_err:
-
- bc_vec_free(&p->funcs);
-
-func_err:
-
- free(p->num_buf);
-
-num_buf_err:
-
- bc_num_free(&p->one);
-
-one_err:
-
- bc_num_free(&p->zero);
-
-zero_err:
-
- bc_num_free(&p->last);
-
-last_err:
-
- bc_num_free(&p->obase);
-
-obase_err:
-
- bc_num_free(&p->ibase);
-
- return s;
-}
-
-void bc_program_limits(BcProgram *p) {
-
- putchar('\n');
-
- printf("BC_BASE_MAX = %ld\n", p->base_max);
- printf("BC_DIM_MAX = %ld\n", p->dim_max);
- printf("BC_SCALE_MAX = %ld\n", p->scale_max);
- printf("BC_STRING_MAX = %ld\n", p->string_max);
- printf("Max Exponent = %ld\n", LONG_MAX);
- printf("Number of Vars = %u\n", UINT32_MAX);
-
- putchar('\n');
-}
-
-BcStatus bc_program_func_add(BcProgram *p, char *name, size_t *idx) {
-
- BcStatus status;
- BcEntry entry;
- BcEntry *entry_ptr;
- BcFunc f;
-
- if (!p || !name || !idx) return BC_STATUS_INVALID_PARAM;
-
- entry.name = name;
- entry.idx = p->funcs.len;
-
- status = bc_veco_insert(&p->func_map, &entry, idx);
-
- if (status) {
- free(name);
- if (status != BC_STATUS_VECO_ITEM_EXISTS) return status;
- }
-
- entry_ptr = bc_veco_item(&p->func_map, *idx);
-
- if (!entry_ptr) return BC_STATUS_EXEC_UNDEFINED_FUNC;
-
- *idx = entry_ptr->idx;
-
- if (status == BC_STATUS_VECO_ITEM_EXISTS) {
-
- BcFunc *func;
-
- func = bc_vec_item(&p->funcs, entry_ptr->idx);
-
- if (!func) return BC_STATUS_EXEC_UNDEFINED_FUNC;
-
- status = BC_STATUS_SUCCESS;
-
- // We need to reset these so the function can be repopulated.
- while (!status && func->autos.len) status = bc_vec_pop(&func->autos);
- while (!status && func->params.len) status = bc_vec_pop(&func->params);
- }
- else {
-
- status = bc_func_init(&f);
-
- if (status) return status;
-
- status = bc_vec_push(&p->funcs, &f);
- }
-
- return status;
-}
-
-BcStatus bc_program_var_add(BcProgram *p, char *name, size_t *idx) {
-
- BcStatus status;
- BcEntry entry;
- BcVar v;
-
- if (!p || !name || !idx) return BC_STATUS_INVALID_PARAM;
-
- entry.name = name;
- entry.idx = p->vars.len;
-
- status = bc_veco_insert(&p->var_map, &entry, idx);
-
- if (status) return status == BC_STATUS_VECO_ITEM_EXISTS ?
- BC_STATUS_SUCCESS : status;
-
- status = bc_var_init(&v);
-
- if (status) return status;
-
- return bc_vec_push(&p->vars, &v);
-}
-
-BcStatus bc_program_array_add(BcProgram *p, char *name, size_t *idx) {
-
- BcStatus status;
- BcEntry entry;
- BcArray a;
-
- if (!p || !name || !idx) return BC_STATUS_INVALID_PARAM;
-
- entry.name = name;
- entry.idx = p->arrays.len;
-
- status = bc_veco_insert(&p->array_map, &entry, idx);
-
- if (status) return status == BC_STATUS_VECO_ITEM_EXISTS ?
- BC_STATUS_SUCCESS : status;
-
- status = bc_array_init(&a);
-
- if (status) return status;
-
- return bc_vec_push(&p->arrays, &a);
-}
-
-BcStatus bc_program_exec(BcProgram *p) {
-
- BcStatus status;
- uint8_t *code;
- size_t idx;
- int pchars;
- BcResult result;
- BcFunc *func;
- BcInstPtr *ip;
- bool cond;
-
- ip = bc_vec_top(&p->stack);
-
- if (!ip) return BC_STATUS_EXEC_INVALID_STACK;
-
- func = bc_vec_item(&p->funcs, ip->func);
-
- if (!func) return BC_STATUS_EXEC_INVALID_STACK;
-
- status = BC_STATUS_SUCCESS;
-
- code = func->code.array;
- cond = false;
-
- while (ip->idx < func->code.len) {
-
- uint8_t inst;
-
- inst = code[(ip->idx)++];
-
- switch (inst) {
-
- case BC_INST_CALL:
- {
- status = bc_program_call(p, code, &ip->idx);
- break;
- }
-
- case BC_INST_RETURN:
- case BC_INST_RETURN_ZERO:
- {
- status = bc_program_return(p, inst);
- break;
- }
-
- case BC_INST_READ:
- {
- status = bc_program_read(p);
- break;
- }
-
- case BC_INST_JUMP_NOT_ZERO:
- case BC_INST_JUMP_ZERO:
- {
- BcResult *operand;
- BcNum *num;
-
- status = bc_program_unaryOpPrep(p, &operand, &num);
-
- if (status) return status;
-
- cond = bc_num_compare(num, &p->zero) == 0;
-
- status = bc_vec_pop(&p->expr_stack);
-
- if (status) return status;
-
- // Fallthrough.
- }
- case BC_INST_JUMP:
- {
- size_t idx;
- size_t *addr;
-
- idx = bc_program_index(code, &ip->idx);
- addr = bc_vec_item(&func->labels, idx);
-
- if (!addr) return BC_STATUS_EXEC_INVALID_LABEL;
-
- if (inst == BC_INST_JUMP ||
- (inst == BC_INST_JUMP_ZERO && cond) ||
- (inst == BC_INST_JUMP_NOT_ZERO && !cond))
- {
- ip->idx = *addr;
- }
-
- break;
- }
-
- case BC_INST_PUSH_VAR:
- case BC_INST_PUSH_ARRAY:
- {
- status = bc_program_push(p, code, &ip->idx, inst == BC_INST_PUSH_VAR);
- break;
- }
-
- case BC_INST_PUSH_LAST:
- {
- result.type = BC_RESULT_LAST;
- status = bc_vec_push(&p->expr_stack, &result);
- break;
- }
-
- case BC_INST_PUSH_SCALE:
- {
- status = bc_program_pushScale(p);
- break;
- }
-
- case BC_INST_PUSH_IBASE:
- {
- result.type = BC_RESULT_IBASE;
- status = bc_vec_push(&p->expr_stack, &result);
- break;
- }
-
- case BC_INST_PUSH_OBASE:
- {
- result.type = BC_RESULT_OBASE;
- status = bc_vec_push(&p->expr_stack, &result);
- break;
- }
-
- case BC_INST_SCALE_FUNC:
- case BC_INST_LENGTH:
- case BC_INST_SQRT:
- {
- status = bc_program_builtin(p, inst);
- break;
- }
-
- case BC_INST_PUSH_NUM:
- {
- BcResult result;
-
- result.type = BC_RESULT_CONSTANT;
- result.data.id.idx = bc_program_index(code, &ip->idx);
-
- status = bc_vec_push(&p->expr_stack, &result);
-
- break;
- }
-
- case BC_INST_POP:
- {
- status = bc_vec_pop(&p->expr_stack);
- break;
- }
-
- case BC_INST_INC_DUP:
- case BC_INST_DEC_DUP:
- case BC_INST_INC:
- case BC_INST_DEC:
- {
- status = bc_program_incdec(p, inst);
- break;
- }
-
- case BC_INST_HALT:
- {
- status = BC_STATUS_EXEC_HALT;
- break;
- }
-
- case BC_INST_PRINT:
- case BC_INST_PRINT_EXPR:
- {
- BcResult *operand;
- BcNum *num;
-
- status = bc_program_unaryOpPrep(p, &operand, &num);
-
- if (status) return status;
-
- status = bc_num_print(num, &p->obase, p->obase_t,
- inst == BC_INST_PRINT);
-
- fflush(stdout);
-
- if (status) return status;
-
- status = bc_num_copy(&p->last, num);
-
- if (status) return status;
-
- status = bc_vec_pop(&p->expr_stack);
-
- break;
- }
-
- case BC_INST_STR:
- {
- const char *string;
-
- idx = bc_program_index(code, &ip->idx);
-
- if (idx >= p->strings.len) return BC_STATUS_EXEC_INVALID_STRING;
-
- string = bc_vec_item(&p->strings, idx);
-
- pchars = fprintf(stdout, "%s", string);
- status = pchars > 0 ? BC_STATUS_SUCCESS :
- BC_STATUS_EXEC_PRINT_ERR;
-
- break;
- }
-
- case BC_INST_PRINT_STR:
- {
- const char **string;
-
- idx = bc_program_index(code, &ip->idx);
-
- if (idx >= p->strings.len) return BC_STATUS_EXEC_INVALID_STRING;
-
- string = bc_vec_item(&p->strings, idx);
-
- if (!string) return BC_STATUS_EXEC_INVALID_STRING;
-
- status = bc_program_printString(*string);
-
- break;
- }
-
- case BC_INST_OP_POWER:
- case BC_INST_OP_MULTIPLY:
- case BC_INST_OP_DIVIDE:
- case BC_INST_OP_MODULUS:
- case BC_INST_OP_PLUS:
- case BC_INST_OP_MINUS:
- {
- status = bc_program_op(p, inst);
- break;
- }
-
- case BC_INST_OP_REL_EQUAL:
- case BC_INST_OP_REL_LESS_EQ:
- case BC_INST_OP_REL_GREATER_EQ:
- case BC_INST_OP_REL_NOT_EQ:
- case BC_INST_OP_REL_LESS:
- case BC_INST_OP_REL_GREATER:
- {
- status = bc_program_logical(p, inst);
- break;
- }
-
- case BC_INST_OP_BOOL_NOT:
- {
- BcResult *ptr;
- BcNum *num;
-
- status = bc_program_unaryOpPrep(p, &ptr, &num);
-
- if (status) return status;
-
- status = bc_num_init(&result.data.num, BC_NUM_DEF_SIZE);
-
- if (status) return status;
-
- if (bc_num_compare(num, &p->zero)) bc_num_one(&result.data.num);
- else bc_num_zero(&result.data.num);
-
- status = bc_program_unaryOpRetire(p, &result, BC_RESULT_INTERMEDIATE);
-
- if (status) bc_num_free(&result.data.num);
-
- break;
- }
-
- case BC_INST_OP_BOOL_OR:
- case BC_INST_OP_BOOL_AND:
- {
- status = bc_program_logical(p, inst);
- break;
- }
-
- case BC_INST_OP_NEGATE:
- {
- status = bc_program_negate(p);
- break;
- }
-
- case BC_INST_OP_ASSIGN_POWER:
- case BC_INST_OP_ASSIGN_MULTIPLY:
- case BC_INST_OP_ASSIGN_DIVIDE:
- case BC_INST_OP_ASSIGN_MODULUS:
- case BC_INST_OP_ASSIGN_PLUS:
- case BC_INST_OP_ASSIGN_MINUS:
- case BC_INST_OP_ASSIGN:
- {
- status = bc_program_assign(p, inst);
- break;
- }
-
- default:
- {
- status = BC_STATUS_EXEC_INVALID_STMT;
- break;
- }
- }
-
- if (status) return status;
-
- // We keep getting these because if the size of the
- // stack changes, pointers may end up being invalid.
- ip = bc_vec_top(&p->stack);
-
- if (!ip) return BC_STATUS_EXEC_INVALID_STACK;
-
- func = bc_vec_item(&p->funcs, ip->func);
-
- if (!func) return BC_STATUS_EXEC_INVALID_STACK;
-
- code = func->code.array;
- }
-
- return status;
-}
-
-BcStatus bc_program_print(BcProgram *p) {
-
- BcStatus status;
- BcFunc *func;
- uint8_t *code;
- BcInstPtr ip;
- size_t i;
-
- status = BC_STATUS_SUCCESS;
-
- for (i = 0; !status && i < p->funcs.len; ++i) {
-
- ip.idx = 0;
- ip.func = i;
- ip.len = 0;
-
- func = bc_vec_item(&p->funcs, ip.func);
-
- if (!func) return BC_STATUS_EXEC_INVALID_STACK;
-
- code = func->code.array;
-
- if (printf("func[%zu]: ", ip.func) < 0) return BC_STATUS_IO_ERR;
-
- while (ip.idx < func->code.len) {
-
- uint8_t inst;
-
- inst = code[ip.idx++];
-
- switch (inst) {
-
- case BC_INST_PUSH_VAR:
- case BC_INST_PUSH_ARRAY:
- {
- if (putchar(inst) == EOF) return BC_STATUS_IO_ERR;
- status = bc_program_printName(code, &ip.idx);
- break;
- }
-
- case BC_INST_CALL:
- {
- if (putchar(inst) == EOF) return BC_STATUS_IO_ERR;
-
- status = bc_program_printIndex(code, &ip.idx);
-
- if (status) return status;
-
- status = bc_program_printIndex(code, &ip.idx);
-
- break;
- }
-
- case BC_INST_JUMP:
- case BC_INST_JUMP_NOT_ZERO:
- case BC_INST_JUMP_ZERO:
- case BC_INST_PUSH_NUM:
- case BC_INST_STR:
- case BC_INST_PRINT_STR:
- {
- if (putchar(inst) == EOF) return BC_STATUS_IO_ERR;
- bc_program_printIndex(code, &ip.idx);
- break;
- }
-
- default:
- {
- if (putchar(inst) == EOF) return BC_STATUS_IO_ERR;
- break;
- }
- }
- }
-
- if (status) return status;
-
- if (putchar('\n') == EOF) status = BC_STATUS_IO_ERR;
- }
-
- return status;
-}
-
-void bc_program_free(BcProgram *p) {
-
- if (p == NULL) return;
-
- free(p->num_buf);
-
- bc_num_free(&p->ibase);
- bc_num_free(&p->obase);
-
- bc_vec_free(&p->funcs);
- bc_veco_free(&p->func_map);
-
- bc_vec_free(&p->vars);
- bc_veco_free(&p->var_map);
-
- bc_vec_free(&p->arrays);
- bc_veco_free(&p->array_map);
-
- bc_vec_free(&p->strings);
- bc_vec_free(&p->constants);
-
- bc_vec_free(&p->expr_stack);
- bc_vec_free(&p->stack);
-
- bc_num_free(&p->last);
- bc_num_free(&p->zero);
- bc_num_free(&p->one);
-
- memset(p, 0, sizeof(BcProgram));
-}
-
-void bc_vm_sigint(int sig) {
-
- struct sigaction act;
- ssize_t err;
-
- sigemptyset(&act.sa_mask);
- act.sa_handler = bc_vm_sigint;
-
- sigaction(SIGINT, &act, NULL);
-
- if (sig == SIGINT) {
- err = write(STDERR_FILENO, bc_program_sigint_msg,
- strlen(bc_program_sigint_msg));
- if (err >= 0) TT.bc_signal = 1;
- }
-}
-
-BcStatus bc_vm_signal(BcVm *vm) {
-
- BcStatus status;
- BcFunc *func;
- BcInstPtr *ip;
-
- TT.bc_signal = 0;
-
- while (vm->program.stack.len > 1) {
-
- status = bc_vec_pop(&vm->program.stack);
-
- if (status) return status;
- }
-
- func = bc_vec_item(&vm->program.funcs, 0);
-
- if (!func) return BC_STATUS_EXEC_UNDEFINED_FUNC;
-
- ip = bc_vec_top(&vm->program.stack);
-
- if (!ip) return BC_STATUS_EXEC_INVALID_STMT;
-
- ip->idx = func->code.len;
-
- return BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_vm_execFile(BcVm *vm, int idx) {
-
- BcStatus status;
- const char *file;
- char *data;
- BcProgramExecFunc exec;
-
- exec = TT.bc_code ? bc_program_print : bc_program_exec;
-
- file = vm->filev[idx];
- vm->program.file = file;
-
- status = bc_io_fread(file, &data);
-
- if (status) return status;
-
- status = bc_parse_file(&vm->parse, file);
-
- if (status) goto read_err;
-
- status = bc_parse_text(&vm->parse, data);
-
- if (status) goto read_err;
-
- do {
-
- status = bc_parse_parse(&vm->parse);
-
- if (status && status != BC_STATUS_LEX_EOF && status != BC_STATUS_PARSE_EOF)
- {
- bc_error_file(status, vm->parse.lex.file, vm->parse.lex.line);
- goto err;
- }
-
- if (TT.bc_signal) {
- if (!TT.bc_interactive) goto read_err;
- else {
- status = bc_vm_signal(vm);
- if (status) goto read_err;
- }
- }
-
- if (status) {
-
- if (status != BC_STATUS_LEX_EOF &&
- status != BC_STATUS_PARSE_EOF &&
- status != BC_STATUS_PARSE_QUIT &&
- status != BC_STATUS_PARSE_LIMITS)
- {
- bc_error_file(status, vm->program.file, vm->parse.lex.line);
- goto err;
- }
- else if (status == BC_STATUS_PARSE_QUIT) {
- break;
- }
- else if (status == BC_STATUS_PARSE_LIMITS) {
- bc_program_limits(&vm->program);
- status = BC_STATUS_SUCCESS;
- continue;
- }
-
- while (!status && vm->parse.token.type != BC_LEX_NEWLINE &&
- vm->parse.token.type != BC_LEX_SEMICOLON)
- {
- status = bc_lex_next(&vm->parse.lex, &vm->parse.token);
- }
- }
-
- } while (!status);
-
- if (status != BC_STATUS_PARSE_EOF &&
- status != BC_STATUS_LEX_EOF &&
- status != BC_STATUS_PARSE_QUIT)
- {
- goto read_err;
- }
-
- if (BC_PARSE_CAN_EXEC(&vm->parse)) {
-
- status = exec(&vm->program);
-
- if (status) goto read_err;
-
- if (TT.bc_interactive) {
-
- fflush(stdout);
-
- if (TT.bc_signal) {
-
- status = bc_vm_signal(vm);
-
- fprintf(stderr, "%s", bc_program_ready_prompt);
- fflush(stderr);
- }
- }
- else if (TT.bc_signal) {
- status = bc_vm_signal(vm);
- goto read_err;
- }
- }
- else status = BC_STATUS_EXEC_FILE_NOT_EXECUTABLE;
-
-read_err:
-
- bc_error(status);
-
-err:
-
- free(data);
-
- return status;
-}
-
-BcStatus bc_vm_execStdin(BcVm *vm) {
-
- BcStatus status;
- char *buf;
- char *buffer;
- char *temp;
- size_t n;
- size_t bufn;
- size_t slen;
- size_t total_len;
- bool string;
- bool comment;
-
- vm->program.file = bc_program_stdin_name;
-
- status = bc_parse_file(&vm->parse, bc_program_stdin_name);
-
- if (status) return status;
-
- n = BC_VM_BUF_SIZE;
- bufn = BC_VM_BUF_SIZE;
- buffer = malloc(BC_VM_BUF_SIZE + 1);
-
- if (!buffer) return BC_STATUS_MALLOC_FAIL;
-
- buffer[0] = '\0';
-
- buf = malloc(BC_VM_BUF_SIZE + 1);
-
- if (!buf) {
- status = BC_STATUS_MALLOC_FAIL;
- goto buf_err;
- }
-
- string = false;
- comment = false;
-
- // The following loop is complicated because the vm tries
- // not to send any lines that end with a backslash to the
- // parser. The reason for that is because the parser treats
- // a backslash newline combo as whitespace, per the bc spec.
- // Thus, the parser will expect more stuff. That is also
- // the case with strings and comments.
- while ((!status || status != BC_STATUS_PARSE_QUIT) &&
- !(status = bc_io_getline(&buf, &bufn)))
- {
- size_t len;
-
- len = strlen(buf);
- slen = strlen(buffer);
- total_len = slen + len;
-
- if (len == 1 && buf[0] == '"') string = !string;
- else if (len > 1 || comment) {
- uint32_t i;
-
- for (i = 0; i < len; ++i) {
-
- char c;
- bool notend;
-
- notend = len > i + 1;
-
- c = buf[i];
-
- if (c == '"') string = !string;
- else if (c == '/' && notend && !comment && buf[i + 1] == '*') {
- comment = true;
- break;
- }
- else if (c == '*' && notend && comment && buf[i + 1] == '/') {
- comment = false;
- }
- }
-
- if (string || comment || buf[len - 2] == '\\') {
-
- if (total_len > n) {
-
- temp = realloc(buffer, total_len + 1);
-
- if (!temp) {
- status = BC_STATUS_MALLOC_FAIL;
- goto exit_err;
- }
-
- buffer = temp;
- n = slen + len;
- }
-
- strcat(buffer, buf);
-
- continue;
- }
- }
-
- if (total_len > n) {
-
- temp = realloc(buffer, total_len + 1);
-
- if (!temp) {
- status = BC_STATUS_MALLOC_FAIL;
- goto exit_err;
- }
-
- buffer = temp;
- n = slen + len;
- }
-
- strcat(buffer, buf);
-
- status = bc_parse_text(&vm->parse, buffer);
-
- if (!TT.bc_signal) {
-
- if (status) {
-
- if (status == BC_STATUS_PARSE_QUIT ||
- status == BC_STATUS_LEX_EOF ||
- status == BC_STATUS_PARSE_EOF)
- {
- break;
- }
- else if (status == BC_STATUS_PARSE_LIMITS) {
- bc_program_limits(&vm->program);
- status = BC_STATUS_SUCCESS;
- }
- else {
- bc_error(status);
- goto exit_err;
- }
- }
- }
- else if (status == BC_STATUS_PARSE_QUIT) {
- break;
- }
- else if (status == BC_STATUS_PARSE_LIMITS) {
- bc_program_limits(&vm->program);
- status = BC_STATUS_SUCCESS;
- }
-
- while (!status) status = bc_parse_parse(&vm->parse);
-
- if (status == BC_STATUS_PARSE_QUIT) break;
- else if (status == BC_STATUS_PARSE_LIMITS) {
- bc_program_limits(&vm->program);
- status = BC_STATUS_SUCCESS;
- }
- else if (status != BC_STATUS_LEX_EOF && status != BC_STATUS_PARSE_EOF) {
-
- BcFunc *func;
- BcInstPtr *ip;
-
- bc_error_file(status, vm->program.file, vm->parse.lex.line);
-
- ip = bc_vec_item(&vm->program.stack, 0);
- func = bc_vec_item(&vm->program.funcs, 0);
-
- if (ip && func) ip->idx = func->code.len;
-
- while (vm->parse.token.type != BC_LEX_NEWLINE &&
- vm->parse.token.type != BC_LEX_SEMICOLON)
- {
- status = bc_lex_next(&vm->parse.lex, &vm->parse.token);
-
- if (status && status != BC_STATUS_LEX_EOF) {
-
- bc_error_file(status, vm->program.file, vm->parse.lex.line);
-
- ip = bc_vec_item(&vm->program.stack, 0);
- func = bc_vec_item(&vm->program.funcs, 0);
-
- if (ip && func) ip->idx = func->code.len;
-
- break;
- }
- else if (status == BC_STATUS_LEX_EOF) {
- status = BC_STATUS_SUCCESS;
- break;
- }
- }
- }
-
- if (BC_PARSE_CAN_EXEC(&vm->parse)) {
-
- if (!TT.bc_code) {
-
- status = bc_program_exec(&vm->program);
-
- if (status) {
- bc_error(status);
- goto exit_err;
- }
-
- if (TT.bc_interactive) {
-
- fflush(stdout);
-
- if (TT.bc_signal) {
- status = bc_vm_signal(vm);
- fprintf(stderr, "%s", bc_program_ready_prompt);
- }
- }
- else if (TT.bc_signal) {
- status = bc_vm_signal(vm);
- goto exit_err;
- }
- }
- else {
-
- bc_program_print(&vm->program);
-
- if (TT.bc_interactive) {
-
- fflush(stdout);
-
- if (TT.bc_signal) {
- status = bc_vm_signal(vm);
- fprintf(stderr, "%s", bc_program_ready_prompt);
- }
- }
- else if (TT.bc_signal) {
- status = bc_vm_signal(vm);
- goto exit_err;
- }
- }
- }
-
- buffer[0] = '\0';
- }
-
- status = !status || status == BC_STATUS_PARSE_QUIT ||
- status == BC_STATUS_EXEC_HALT ||
- status == BC_STATUS_LEX_EOF ||
- status == BC_STATUS_PARSE_EOF ?
- BC_STATUS_SUCCESS : status;
-
-exit_err:
-
- free(buf);
-
-buf_err:
-
- free(buffer);
-
- return status;
-}
-
-BcStatus bc_vm_init(BcVm *vm, int filec, const char *filev[]) {
-
- BcStatus status;
- struct sigaction act;
-
- sigemptyset(&act.sa_mask);
- act.sa_handler = bc_vm_sigint;
-
- if (sigaction(SIGINT, &act, NULL) < 0) return BC_STATUS_EXEC_SIGACTION_FAIL;
-
- status = bc_program_init(&vm->program);
-
- if (status) return status;
-
- status = bc_parse_init(&vm->parse, &vm->program);
-
- if (status) {
- bc_program_free(&vm->program);
- return status;
- }
-
- vm->filec = filec;
- vm->filev = filev;
-
- return BC_STATUS_SUCCESS;
-}
-
-void bc_vm_free(BcVm *vm) {
- bc_parse_free(&vm->parse);
- bc_program_free(&vm->program);
-}
-
-BcStatus bc_vm_exec(BcVm *vm) {
-
- BcStatus status;
- int num_files, i;
-
- status = BC_STATUS_SUCCESS;
-
- num_files = vm->filec;
-
- for (i = 0; !status && i < num_files; ++i) status = bc_vm_execFile(vm, i);
-
- if (status != BC_STATUS_SUCCESS &&
- status != BC_STATUS_PARSE_QUIT &&
- status != BC_STATUS_EXEC_HALT)
- {
- return status;
- }
-
- status = bc_vm_execStdin(vm);
-
- status = status == BC_STATUS_PARSE_QUIT ||
- status == BC_STATUS_EXEC_HALT ?
- BC_STATUS_SUCCESS : status;
-
- return status;
-}
-
-BcStatus bc_print_version() {
-
- int err;
-
- err = printf(bc_version_fmt, bc_version, bc_copyright, bc_warranty_short);
-
- return err < 0 ? BC_STATUS_IO_ERR : BC_STATUS_SUCCESS;
-}
-
-void bc_error(BcStatus status) {
-
- if (!status || status == BC_STATUS_PARSE_QUIT ||
- status == BC_STATUS_EXEC_HALT ||
- status >= BC_STATUS_POSIX_NAME_LEN)
- {
- return;
- }
-
- fprintf(stderr, "\n%s error: %s\n\n",
- bc_err_types[status], bc_err_descs[status]);
-}
-
-void bc_error_file(BcStatus status, const char *file, uint32_t line) {
-
- if (!status || status == BC_STATUS_PARSE_QUIT ||
- !file || status >= BC_STATUS_POSIX_NAME_LEN)
- {
- return;
- }
-
- fprintf(stderr, "\n%s error: %s\n", bc_err_types[status],
- bc_err_descs[status]);
-
- fprintf(stderr, " %s", file);
-
- if (line) fprintf(stderr, ":%d\n\n", line);
- else fprintf(stderr, "\n\n");
-}
-
-BcStatus bc_posix_error(BcStatus status, const char *file,
- uint32_t line, const char *msg)
-{
- if (!(TT.bc_std || TT.bc_warn) ||
- status < BC_STATUS_POSIX_NAME_LEN ||
- !file)
- {
- return BC_STATUS_SUCCESS;
- }
-
- fprintf(stderr, "\n%s %s: %s\n", bc_err_types[status],
- TT.bc_std ? "error" : "warning", bc_err_descs[status]);
-
- if (msg) fprintf(stderr, " %s\n", msg);
-
- fprintf(stderr, " %s", file);
-
- if (line) fprintf(stderr, ":%d\n\n", line);
- else fprintf(stderr, "\n\n");
-
- return TT.bc_std ? status : BC_STATUS_SUCCESS;
-}
-
-BcStatus bc_exec(unsigned int flags, unsigned int filec, const char *filev[]) {
-
- BcStatus status;
- BcVm vm;
-
- if ((flags & FLAG_i) || (isatty(STDIN_FILENO) && isatty(STDOUT_FILENO))) {
- TT.bc_interactive = 1;
- } else TT.bc_interactive = 0;
-
- TT.bc_code = flags & FLAG_i;
- TT.bc_std = flags & FLAG_s;
- TT.bc_warn = flags & FLAG_w;
-
- if (!(flags & FLAG_q)) {
-
- status = bc_print_version();
-
- if (status) return status;
- }
-
- status = bc_vm_init(&vm, filec, filev);
-
- if (status) return status;
-
- if (flags & FLAG_l) {
-
- status = bc_parse_file(&vm.parse, bc_lib_name);
-
- if (status) goto err;
-
- status = bc_parse_text(&vm.parse, (const char*) bc_lib);
-
- if (status) goto err;
-
- while (!status) status = bc_parse_parse(&vm.parse);
-
- if (status != BC_STATUS_LEX_EOF && status != BC_STATUS_PARSE_EOF) goto err;
-
- // Make sure to execute the math library.
- status = bc_program_exec(&vm.program);
-
- if (status) goto err;
- }
-
- status = bc_vm_exec(&vm);
-
-err:
-
- bc_vm_free(&vm);
-
- return status;
-}
-
-void bc_main(void) {
-
- unsigned int flags;
-
- flags = (unsigned int) toys.optflags;
-
- toys.exitval = (char) bc_exec(flags, toys.optc, (const char**) toys.optargs);
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-23 17:52:28 +0000