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stack.c
4849 lines (4125 loc) · 145 KB
/
stack.c
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#include "flags.h"
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <errno.h>
#include "defines.h"
#include "hashmap.h"
#include "parse.h"
#include "phase_1.h"
#include "phase_3.h"
#include "stack.h"
#include "include.h"
#include "printf.h"
#include "mersenne.h"
#include "main.h"
extern int g_input_number_error_msg, g_bankheader_status, g_input_float_mode, g_global_label_hint, g_is_data_stream_parser_enabled;
extern int g_source_index, g_source_file_size, g_parsed_int, g_macro_active, g_string_size, g_section_status, g_parse_floats;
extern char *g_buffer, *g_tmp, g_expanded_macro_string[256], g_label[MAX_NAME_LENGTH + 1];
extern struct map_t *g_defines_map;
extern struct active_file_info *g_active_file_info_first, *g_active_file_info_last, *g_active_file_info_tmp;
extern struct macro_runtime *g_macro_runtime_current;
extern struct section_def *g_sec_tmp;
extern struct export_def *g_export_first;
extern struct macro_runtime *g_macro_stack;
extern double g_parsed_double;
extern unsigned char g_asciitable[256];
extern int g_operand_hint, g_operand_hint_type, g_can_calculate_a_minus_b, g_expect_calculations, g_asciitable_defined;
extern int g_is_file_isolated_counter, g_force_add_namespace;
extern struct slot g_slots[256];
extern struct section_def *g_sections_first;
int g_latest_stack = 0, g_last_stack_id = 0, g_resolve_stack_calculations = YES, s_stack_calculations_max = 0;
int g_parsing_function_body = NO, g_fail_quetly_on_non_found_functions = NO, g_input_parse_if = NO, g_dsp_enable_label_address_conversion = YES;
int g_can_remember_converted_stack_items = YES;
static int s_delta_counter = 0, s_delta_section = -1, s_dsp_file_name_id = 0, s_dsp_line_number = 0;
static int s_converted_stack_items_count = 0;
static struct stack_item *s_delta_old_pointer = NULL;
static struct stack **s_stack_calculations = NULL;
static struct stack_item *s_converted_stack_items[64];
static struct stack_item *s_converted_stack_items_backups = NULL;
static int _resolve_string(struct stack_item *s, int *cannot_resolve);
PROFILE_GLOBALS_EXTERN();
static int _is_stack_condition(struct stack_item st[], int count) {
while (count > 0) {
if (st->type == STACK_ITEM_TYPE_OPERATOR && (st->value == SI_OP_COMPARE_EQ || st->value == SI_OP_COMPARE_NEQ || st->value == SI_OP_COMPARE_LT ||
st->value == SI_OP_COMPARE_GT || st->value == SI_OP_COMPARE_LTE || st->value == SI_OP_COMPARE_GTE ||
st->value == SI_OP_LOGICAL_AND || st->value == SI_OP_LOGICAL_OR))
return YES;
count--;
st++;
}
return NO;
}
static struct stack *_allocate_struct_stack(int items) {
struct stack *stack = calloc(sizeof(struct stack), 1);
if (stack == NULL) {
print_error(ERROR_STC, "Out of memory error while allocating room for a new calculation stack.\n");
return NULL;
}
init_stack_struct(stack);
stack->stacksize = items;
stack->stack_items = calloc(sizeof(struct stack_item) * items, 1);
if (stack->stack_items == NULL) {
free(stack);
print_error(ERROR_STC, "Out of memory error while allocating room for a new calculation stack.\n");
return NULL;
}
return stack;
}
void init_stack_struct(struct stack *s) {
s->stack_items = NULL;
s->id = -123456;
s->compressed_id = -123456;
s->position = STACK_POSITION_DEFINITION;
s->filename_id = -123456;
s->stacksize = 0;
s->linenumber = -123456;
s->type = STACK_TYPE_UNKNOWN;
s->bank = -123456;
s->slot = -123456;
s->relative_references = 0;
s->base = -123456;
/* NOTE! section_status is not really set anywhere, but phase_4.c uses it -> investigate */
s->section_status = 0;
s->section_id = -123456;
s->address = -123456;
s->special_id = 0;
s->bits_position = 0;
s->bits_to_define = 0;
s->is_function_body = NO;
s->is_bankheader_section = NO;
s->is_single_instance = NO;
s->has_been_calculated = NO;
s->value = 0.0;
}
int calculation_stack_insert(struct stack *s) {
if (g_bankheader_status == OFF) {
/* outside bankheader sections */
s->is_bankheader_section = NO;
}
else {
/* inside a bankheader section */
s->is_bankheader_section = YES;
}
s->id = g_last_stack_id;
s->section_status = g_section_status;
if (g_section_status == ON)
s->section_id = g_sec_tmp->id;
else
s->section_id = 0;
g_latest_stack = g_last_stack_id;
g_last_stack_id++;
if (g_latest_stack >= s_stack_calculations_max) {
/* enlarge the pointer array! */
s_stack_calculations_max += 4096;
s_stack_calculations = realloc(s_stack_calculations, sizeof(struct stack *) * s_stack_calculations_max);
if (s_stack_calculations == NULL) {
print_error(ERROR_NUM, "Out of memory error while trying to enlarge stack calculations pointer array!\n");
return FAILED;
}
}
s_stack_calculations[g_latest_stack] = s;
return SUCCEEDED;
}
void free_stack_calculations(void) {
int i;
for (i = 0; i < g_last_stack_id; i++) {
if (s_stack_calculations[i] != NULL)
delete_stack_calculation_struct(s_stack_calculations[i]);
}
free(s_stack_calculations);
s_stack_calculations = NULL;
g_latest_stack = 0;
g_last_stack_id = 0;
s_stack_calculations_max = 0;
free(s_converted_stack_items_backups);
s_converted_stack_items_backups = NULL;
}
void delete_stack_calculation_struct(struct stack *s) {
if (s == NULL)
print_error(ERROR_WRN, "Deleting a non-existing computation stack! Please submit a bug report!\n");
else {
s_stack_calculations[s->id] = NULL;
free(s->stack_items);
free(s);
}
}
struct stack *find_stack_calculation(int id, int print_error_message) {
struct stack *s;
if (id < 0 || id >= g_last_stack_id) {
if (print_error_message == YES)
print_error(ERROR_NUM, "Stack calculation %d is out of bounds [0, %d]! Please submit a bug report!\n", id, g_last_stack_id);
return NULL;
}
s = s_stack_calculations[id];
if (s == NULL) {
if (print_error_message == YES)
print_error(ERROR_NUM, "Stack calculation %d has gone missing! Please submit a bug report!\n", id);
}
return s;
}
int compress_stack_calculation_ids(void) {
struct stack **stack_calculations = NULL;
struct export_def *export_tmp;
int i, compressed_id = 0;
/* 1. give stack calculations new IDs */
/* pending calculations we'll export come first */
for (i = 0; i < g_last_stack_id; i++) {
struct stack *s = s_stack_calculations[i];
if (s == NULL)
continue;
if (s->is_function_body == YES)
continue;
s->compressed_id = compressed_id++;
}
/* next come the pending calculations we will not export */
for (i = 0; i < g_last_stack_id; i++) {
struct stack *s = s_stack_calculations[i];
if (s == NULL)
continue;
if (s->is_function_body == NO)
continue;
s->compressed_id = compressed_id++;
}
/* 2. reorder the stack calculations into a new pointer array */
if (s_stack_calculations_max > 0) {
stack_calculations = calloc(sizeof(struct stack *) * s_stack_calculations_max, 1);
if (stack_calculations == NULL) {
print_error(ERROR_NUM, "Out of memory error while trying to reorder stack calculations pointer array! s_stack_calculations_max = %d!\n", s_stack_calculations_max);
return FAILED;
}
for (i = 0; i < g_last_stack_id; i++) {
struct stack *s = s_stack_calculations[i];
if (s == NULL)
continue;
stack_calculations[s->compressed_id] = s;
}
}
/* 3. update all stack calculation IDs in the stack calculations */
for (i = 0; i < g_last_stack_id; i++) {
struct stack *s = s_stack_calculations[i];
int j;
if (s == NULL)
continue;
for (j = 0; j < s->stacksize; j++) {
if (s->stack_items[j].type == STACK_ITEM_TYPE_STACK) {
struct stack *s2 = s_stack_calculations[(int)s->stack_items[j].value];
s->stack_items[j].value = (double)s2->compressed_id;
}
}
}
/* 4. update all definitions that contain stack calculation IDs */
export_tmp = g_export_first;
while (export_tmp != NULL) {
struct definition *tmp_def;
hashmap_get(g_defines_map, export_tmp->name, (void*)&tmp_def);
if (tmp_def != NULL) {
if (tmp_def->type == DEFINITION_TYPE_STACK) {
struct stack *s = s_stack_calculations[(int)tmp_def->value];
if (s != NULL)
tmp_def->value = (double)s->compressed_id;
}
}
export_tmp = export_tmp->next;
}
/* 5. delete the old array, replace it with the new array */
free(s_stack_calculations);
s_stack_calculations = stack_calculations;
/* 6. finalize the ID changes */
for (i = 0; i < g_last_stack_id; i++) {
struct stack *s = s_stack_calculations[i];
if (s != NULL)
s->id = s->compressed_id;
}
return SUCCEEDED;
}
static int _break_before_value_or_string(int i, struct stack_item *si) {
/* we use this function to test if the previous item in the stack
is something that cannot be followed by a value or a string.
in such a case we'll stop adding items to this stack computation */
if (i <= 0)
return FAILED;
si = &si[i-1];
if (si->type == STACK_ITEM_TYPE_VALUE)
return SUCCEEDED;
if (si->type == STACK_ITEM_TYPE_STRING)
return SUCCEEDED;
if (si->type == STACK_ITEM_TYPE_LABEL)
return SUCCEEDED;
if (si->type == STACK_ITEM_TYPE_OPERATOR && si->value == SI_OP_RIGHT)
return SUCCEEDED;
return FAILED;
}
#if defined(WLA_DEBUG)
static void _debug_print_stack(int line_number, int stack_id, struct stack_item *ta, int count, int id, struct stack *stack) {
int k;
print_text(YES, "LINE %5d: ID = %d (STACK) CALCULATION ID = %d (c%d) ", line_number, id, stack_id, stack_id);
if (stack == NULL)
print_text(YES, "FB?: ");
else if (stack->is_function_body == YES)
print_text(YES, "FBy: ");
else
print_text(YES, "FBn: ");
for (k = 0; k < count; k++) {
char ar[] = "+-*()|&/^01%~<>!:<>";
int add_sign = YES;
if (ta[k].type == STACK_ITEM_TYPE_DELETED)
continue;
if (ta[k].type == STACK_ITEM_TYPE_OPERATOR) {
int value = (int)ta[k].value;
if (!(value == SI_OP_ROUND ||
value == SI_OP_CEIL ||
value == SI_OP_FLOOR ||
value == SI_OP_MIN ||
value == SI_OP_MAX ||
value == SI_OP_SQRT ||
value == SI_OP_COS ||
value == SI_OP_SIN ||
value == SI_OP_TAN ||
value == SI_OP_ACOS ||
value == SI_OP_ASIN ||
value == SI_OP_ATAN ||
value == SI_OP_ATAN2 ||
value == SI_OP_COSH ||
value == SI_OP_SINH ||
value == SI_OP_TANH ||
value == SI_OP_LOG ||
value == SI_OP_LOG10 ||
value == SI_OP_POW ||
value == SI_OP_LOW_BYTE ||
value == SI_OP_HIGH_BYTE ||
value == SI_OP_LOW_WORD ||
value == SI_OP_HIGH_WORD ||
value == SI_OP_BANK_BYTE ||
value == SI_OP_BANK ||
value == SI_OP_CLAMP ||
value == SI_OP_SIGN ||
value == SI_OP_ABS))
add_sign = NO;
}
if (add_sign == YES) {
if (ta[k].sign == SI_SIGN_POSITIVE)
print_text(YES, "+");
else
print_text(YES, "-");
}
if (ta[k].can_calculate_deltas == YES)
print_text(YES, "@");
else if (ta[k].can_calculate_deltas == NOT_APPLICABLE)
print_text(YES, "*");
if (ta[k].type == STACK_ITEM_TYPE_OPERATOR) {
int value = (int)ta[k].value;
if (value == SI_OP_SHIFT_LEFT)
print_text(YES, "<<");
else if (value == SI_OP_SHIFT_RIGHT)
print_text(YES, ">>");
else if (value == SI_OP_COMPARE_EQ)
print_text(YES, "==");
else if (value == SI_OP_COMPARE_NEQ)
print_text(YES, "!=");
else if (value == SI_OP_COMPARE_LTE)
print_text(YES, "<=");
else if (value == SI_OP_COMPARE_GTE)
print_text(YES, ">=");
else if (value == SI_OP_COMPARE_LT)
print_text(YES, "< (LT)");
else if (value == SI_OP_COMPARE_GT)
print_text(YES, "> (GT)");
else if (value == SI_OP_LOGICAL_OR)
print_text(YES, "||");
else if (value == SI_OP_LOGICAL_AND)
print_text(YES, "&&");
else if (value == SI_OP_LOW_WORD)
print_text(YES, "loword(a)");
else if (value == SI_OP_HIGH_WORD)
print_text(YES, "hiword(a)");
else if (value == SI_OP_BANK_BYTE)
print_text(YES, "bankbyte(a)");
else if (value == SI_OP_ROUND)
print_text(YES, "round(a)");
else if (value == SI_OP_CEIL)
print_text(YES, "ceil(a)");
else if (value == SI_OP_FLOOR)
print_text(YES, "floor(a)");
else if (value == SI_OP_MIN)
print_text(YES, "min(a,b)");
else if (value == SI_OP_MAX)
print_text(YES, "max(a,b)");
else if (value == SI_OP_SQRT)
print_text(YES, "sqrt(a)");
else if (value == SI_OP_ABS)
print_text(YES, "abs(a)");
else if (value == SI_OP_COS)
print_text(YES, "cos(a)");
else if (value == SI_OP_SIN)
print_text(YES, "sin(a)");
else if (value == SI_OP_TAN)
print_text(YES, "tan(a)");
else if (value == SI_OP_ACOS)
print_text(YES, "acos(a)");
else if (value == SI_OP_ASIN)
print_text(YES, "asin(a)");
else if (value == SI_OP_ATAN)
print_text(YES, "atan(a)");
else if (value == SI_OP_ATAN2)
print_text(YES, "atan2(a,b)");
else if (value == SI_OP_NEGATE)
print_text(YES, "negate(a)");
else if (value == SI_OP_COSH)
print_text(YES, "cosh(a)");
else if (value == SI_OP_SINH)
print_text(YES, "sinh(a)");
else if (value == SI_OP_TANH)
print_text(YES, "tanh(a)");
else if (value == SI_OP_LOG)
print_text(YES, "log(a)");
else if (value == SI_OP_LOG10)
print_text(YES, "log10(a)");
else if (value == SI_OP_POW)
print_text(YES, "pow(a,b)");
else if (value == SI_OP_CLAMP)
print_text(YES, "pow(v,min,max)");
else if (value == SI_OP_SIGN)
print_text(YES, "sign(a)");
else {
if (value >= (int)strlen(ar)) {
print_text(YES, "ERROR!\n");
print_text(YES, "_debug_print_stack(): ERROR: Unhandled SI_OP_* (%d)! Please submit a bug report!\n", value);
exit(1);
}
print_text(YES, "%c", ar[value]);
}
}
else if (ta[k].type == STACK_ITEM_TYPE_VALUE)
print_text(YES, "V(%f)", ta[k].value);
else if (ta[k].type == STACK_ITEM_TYPE_STACK)
print_text(YES, "C(%d)", (int)ta[k].value);
else if (ta[k].type == STACK_ITEM_TYPE_STRING)
print_text(YES, "S(%s)", ta[k].string);
else if (ta[k].type == STACK_ITEM_TYPE_LABEL)
print_text(YES, "L(%s)", ta[k].string);
else
print_text(YES, "?");
if (k < count-1)
print_text(YES, ", ");
}
print_text(YES, "\n");
}
#endif
int get_label_length(char *l) {
struct definition *tmp_def;
int length;
hashmap_get(g_defines_map, l, (void*)&tmp_def);
if (tmp_def != NULL) {
if (tmp_def->type == DEFINITION_TYPE_STRING)
return (int)strlen(tmp_def->string);
else {
print_error(ERROR_NUM, "Definition \"%s\" is not a string definition. .length returns 0 for that...\n", l);
return 0;
}
}
length = (int)strlen(l);
if (l[0] == '"' && l[length-1] == '"')
length -= 2;
return length;
}
static struct stack_item_priority_item s_stack_item_priority_items[] = {
{ SI_OP_LOGICAL_OR, 10 },
{ SI_OP_LOGICAL_AND, 20 },
{ SI_OP_OR, 30 },
{ SI_OP_XOR, 40 },
{ SI_OP_AND, 50 },
{ SI_OP_COMPARE_EQ, 60 },
{ SI_OP_COMPARE_NEQ, 60 },
{ SI_OP_COMPARE_LT, 70 },
{ SI_OP_COMPARE_GT, 70 },
{ SI_OP_COMPARE_LTE, 70 },
{ SI_OP_COMPARE_GTE, 70 },
{ SI_OP_SHIFT_LEFT, 80 },
{ SI_OP_SHIFT_RIGHT, 80 },
{ SI_OP_ADD, 90 },
{ SI_OP_SUB, 90 },
{ SI_OP_NEGATE, 100 },
{ SI_OP_MULTIPLY, 100 },
{ SI_OP_DIVIDE, 100 },
{ SI_OP_MODULO, 100 },
{ SI_OP_POWER, 100 },
{ SI_OP_LOW_BYTE, 110 },
{ SI_OP_HIGH_BYTE, 110 },
{ SI_OP_LOW_WORD, 110 },
{ SI_OP_HIGH_WORD, 110 },
{ SI_OP_BANK, 110 },
{ SI_OP_BANK_BYTE, 110 },
{ SI_OP_ROUND, 110 },
{ SI_OP_CEIL, 110 },
{ SI_OP_FLOOR, 110 },
{ SI_OP_MIN, 110 },
{ SI_OP_MAX, 110 },
{ SI_OP_SQRT, 110 },
{ SI_OP_ABS, 110 },
{ SI_OP_COS, 110 },
{ SI_OP_SIN, 110 },
{ SI_OP_TAN, 110 },
{ SI_OP_COSH, 110 },
{ SI_OP_SINH, 110 },
{ SI_OP_TANH, 110 },
{ SI_OP_ACOS, 110 },
{ SI_OP_ASIN, 110 },
{ SI_OP_ATAN, 110 },
{ SI_OP_ATAN2, 110 },
{ SI_OP_LOG, 110 },
{ SI_OP_LOG10, 110 },
{ SI_OP_POW, 110 },
{ SI_OP_CLAMP, 110 },
{ SI_OP_SIGN, 110 },
{ SI_OP_NOT, 120 },
{ 999, 999 }
};
static int _get_op_priority(int op) {
int i = 0;
while (s_stack_item_priority_items[i].op < 999) {
if (s_stack_item_priority_items[i].op == op)
return s_stack_item_priority_items[i].priority;
i++;
}
print_text(NO, "_get_op_priority(): No priority for OP %d! Please submit a bug report\n", op);
return 0;
}
static void _return_converted_stack_items(void) {
struct stack_item *b, *s;
int i;
for (i = 0; i < s_converted_stack_items_count; i++) {
b = &s_converted_stack_items_backups[i];
s = s_converted_stack_items[i];
/*
print_text(NO, "RETURN %s: %d %f\n", s->string, s->type, s->value);
*/
s->type = b->type;
s->sign = b->sign;
s->can_calculate_deltas = b->can_calculate_deltas;
s->has_been_replaced = b->has_been_replaced;
s->is_in_postfix = b->is_in_postfix;
s->value = b->value;
strcpy(s->string, b->string);
/*
print_text(NO, " NOW %s: %d %f\n", s->string, s->type, s->value);
*/
}
s_converted_stack_items_count = 0;
}
static int _remember_converted_stack_item(struct stack_item *s) {
struct stack_item *b;
if (g_can_remember_converted_stack_items == NO)
return SUCCEEDED;
if (s_converted_stack_items_count >= 64) {
print_text(NO, "_REMEMBER_CONVERTED_STACK_ITEM: Out of space! Please submit a bug report!\n");
return FAILED;
}
if (s_converted_stack_items_backups == NULL) {
s_converted_stack_items_backups = calloc(sizeof(struct stack_item) * 64, 1);
if (s_converted_stack_items_backups == NULL) {
print_error(ERROR_ERR, "Out of memory error while allocating s_converted_stack_items_backups.\n");
return FAILED;
}
}
/*
print_text(NO, "REMEMBER %s: %d %f\n", s->string, s->type, s->value);
*/
b = &s_converted_stack_items_backups[s_converted_stack_items_count];
s_converted_stack_items[s_converted_stack_items_count++] = s;
b->type = s->type;
b->sign = s->sign;
b->can_calculate_deltas = s->can_calculate_deltas;
b->has_been_replaced = s->has_been_replaced;
b->is_in_postfix = s->is_in_postfix;
b->value = s->value;
strcpy(b->string, s->string);
return SUCCEEDED;
}
static int _parse_function_asc(char *in, int *result, int *parsed_chars) {
int res, old_expect = g_expect_calculations, source_index_original = g_source_index, source_index_backup;
/* NOTE! we assume that 'in' is actually '&g_buffer[xyz]', so
let's update g_source_index for input_number() */
g_source_index = (int)(in - g_buffer);
source_index_backup = g_source_index;
g_expect_calculations = NO;
res = input_number();
g_expect_calculations = old_expect;
if (res != SUCCEEDED || g_parsed_int < 0 || g_parsed_int > 255) {
print_error(ERROR_NUM, "asc() requires an immediate value between 0 and 255.\n");
return FAILED;
}
if (g_buffer[g_source_index] != ')') {
print_error(ERROR_NUM, "Malformed \"asc(?)\" detected!\n");
return FAILED;
}
/* skip ')' */
g_source_index++;
/* count the parsed chars */
*parsed_chars = (int)(g_source_index - source_index_backup);
/* return g_source_index */
g_source_index = source_index_original;
if (g_asciitable_defined == 0) {
print_error(ERROR_WRN, "No .ASCIITABLE defined. Using the default n->n -mapping.\n");
*result = g_parsed_int;
}
else
*result = (int)g_asciitable[g_parsed_int];
return SUCCEEDED;
}
static int _parse_function_random(char *in, int *result, int *parsed_chars) {
int res, old_expect = g_expect_calculations, source_index_original = g_source_index, source_index_backup;
int min, max;
/* NOTE! we assume that 'in' is actually '&g_buffer[xyz]', so
let's update g_source_index for input_number() */
g_source_index = (int)(in - g_buffer);
source_index_backup = g_source_index;
g_expect_calculations = YES;
res = input_number();
if (res != SUCCEEDED) {
print_error(ERROR_NUM, "random() requires an immediate value for min.\n");
return FAILED;
}
min = g_parsed_int;
g_expect_calculations = YES;
res = input_number();
g_expect_calculations = old_expect;
if (res != SUCCEEDED) {
print_error(ERROR_NUM, "random() requires an immediate value for max.\n");
return FAILED;
}
max = g_parsed_int;
if (min >= max) {
print_error(ERROR_DIR, "random() needs that min < max.\n");
return FAILED;
}
if (g_buffer[g_source_index] != ')') {
print_error(ERROR_NUM, "Malformed \"random(?,?)\" detected!\n");
return FAILED;
}
/* skip ')' */
g_source_index++;
/* count the parsed chars */
*parsed_chars = (int)(g_source_index - source_index_backup);
/* return g_source_index */
g_source_index = source_index_original;
/* output the random number */
*result = (genrand_int32() % (max-min+1)) + min;
return SUCCEEDED;
}
static int _parse_function_defined(char *in, int *result, int *parsed_chars) {
int res, old_expect = g_expect_calculations, source_index_original = g_source_index, source_index_backup;
struct definition *d;
/* NOTE! we assume that 'in' is actually '&g_buffer[xyz]', so
let's update g_source_index for input_number() */
g_source_index = (int)(in - g_buffer);
source_index_backup = g_source_index;
g_expect_calculations = NO;
res = get_next_plain_string();
g_expect_calculations = old_expect;
if (res != SUCCEEDED) {
print_error(ERROR_NUM, "defined() requires a definition name string.\n");
return FAILED;
}
if (g_buffer[g_source_index] != ')') {
print_error(ERROR_NUM, "Malformed \"defined(?)\" detected!\n");
return FAILED;
}
/* skip ')' */
g_source_index++;
/* count the parsed chars */
*parsed_chars = (int)(g_source_index - source_index_backup);
/* return g_source_index */
g_source_index = source_index_original;
/* try to find the definition */
hashmap_get(g_defines_map, g_label, (void*)&d);
if (d != NULL)
*result = 1;
else
*result = 0;
return SUCCEEDED;
}
static int _parse_function_exists(char *in, int *result, int *parsed_chars) {
int res, old_expect = g_expect_calculations, source_index_original = g_source_index, source_index_backup;
FILE *f;
/* NOTE! we assume that 'in' is actually '&g_buffer[xyz]', so
let's update g_source_index for input_number() */
g_source_index = (int)(in - g_buffer);
source_index_backup = g_source_index;
g_expect_calculations = NO;
res = input_number();
g_expect_calculations = old_expect;
if (res != INPUT_NUMBER_ADDRESS_LABEL && res != INPUT_NUMBER_STRING) {
print_error(ERROR_NUM, "exists() requires a file name string.\n");
return FAILED;
}
if (g_buffer[g_source_index] != ')') {
print_error(ERROR_NUM, "Malformed \"exists(?)\" detected!\n");
return FAILED;
}
/* skip ')' */
g_source_index++;
/* count the parsed chars */
*parsed_chars = (int)(g_source_index - source_index_backup);
/* return g_source_index */
g_source_index = source_index_original;
f = fopen(g_label, "rb");
if (f == NULL)
*result = 0;
else {
*result = 1;
fclose(f);
}
return SUCCEEDED;
}
static int _parse_function_math1(char *in, int *type, double *value, char *string, int *parsed_chars, char *name) {
int res, source_index_original = g_source_index, source_index_backup, input_float_mode = g_input_float_mode;
/* NOTE! we assume that 'in' is actually '&g_buffer[xyz]', so
let's update g_source_index for input_number() */
g_source_index = (int)(in - g_buffer);
source_index_backup = g_source_index;
if (g_buffer[g_source_index] == ')') {
print_error(ERROR_STC, "%s is missing argument 1!\n", name);
return FAILED;
}
g_input_float_mode = ON;
res = input_number();
while (res == INPUT_NUMBER_EOL) {
next_line();
res = input_number();
}
g_input_float_mode = input_float_mode;
*type = res;
if (res == SUCCEEDED)
*value = g_parsed_int;
else if (res == INPUT_NUMBER_FLOAT)
*value = g_parsed_double;
else if (res == INPUT_NUMBER_ADDRESS_LABEL)
strcpy(string, g_label);
else if (res == INPUT_NUMBER_STACK)
*value = g_latest_stack;
else if (res == FAILED)
return FAILED;
else {
print_error(ERROR_STC, "Unhandled result type %d of argument 1 in %s!\n", res, name);
return FAILED;
}
if (g_buffer[g_source_index] != ')') {
print_error(ERROR_NUM, "Malformed \"%s\" detected!\n", name);
return FAILED;
}
/* skip ')' */
g_source_index++;
/* count the parsed chars */
*parsed_chars = (int)(g_source_index - source_index_backup);
/* return g_source_index */
g_source_index = source_index_original;
return SUCCEEDED;
}
static int _parse_function_math2(char *in, int *type_a, int *type_b, double *value_a, double *value_b, char *string_a, char *string_b, int *parsed_chars, char *name) {
int res, source_index_original = g_source_index, source_index_backup, input_float_mode = g_input_float_mode;
/* NOTE! we assume that 'in' is actually '&g_buffer[xyz]', so
let's update g_source_index for input_number() */
g_source_index = (int)(in - g_buffer);
source_index_backup = g_source_index;
/* a */
g_input_float_mode = ON;
res = input_number();
while (res == INPUT_NUMBER_EOL) {
next_line();
res = input_number();
}
*type_a = res;
if (res == SUCCEEDED)
*value_a = g_parsed_int;
else if (res == INPUT_NUMBER_FLOAT)
*value_a = g_parsed_double;
else if (res == INPUT_NUMBER_ADDRESS_LABEL)
strcpy(string_a, g_label);
else if (res == INPUT_NUMBER_STACK)
*value_a = g_latest_stack;
else if (res == FAILED)
return FAILED;
else {
print_error(ERROR_STC, "Unhandled result type %d of argument 1 in %s!\n", res, name);
return FAILED;
}
if (g_buffer[g_source_index] == ')') {
print_error(ERROR_STC, "%s is missing argument 2!\n", name);
return FAILED;
}
/* b */
res = input_number();
while (res == INPUT_NUMBER_EOL) {
next_line();
res = input_number();
}
g_input_float_mode = input_float_mode;
*type_b = res;
if (res == SUCCEEDED)
*value_b = g_parsed_int;
else if (res == INPUT_NUMBER_FLOAT)
*value_b = g_parsed_double;
else if (res == INPUT_NUMBER_ADDRESS_LABEL)
strcpy(string_b, g_label);
else if (res == INPUT_NUMBER_STACK)
*value_b = g_latest_stack;
else if (res == FAILED)
return FAILED;
else {
print_error(ERROR_STC, "Unhandled result type %d of argument 2 in %s!\n", res, name);
return FAILED;
}
if (g_buffer[g_source_index] != ')') {
print_error(ERROR_NUM, "Malformed \"%s\" detected!\n", name);
return FAILED;
}
/* skip ')' */
g_source_index++;
/* count the parsed chars */