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/**
* UPEM / Compilation / Projet
* Pacien TRAN-GIRARD, Adam NAILI
*/
#include "symbol_table.h"
extern int lineno; /* from lexical analyser */
SymbolTable glo_symbol_table = {{{{0}, 0}}, MAXSYMBOLS, 0};
SymbolTable loc_symbol_table = {{{{0}, 0}}, MAXSYMBOLS, 0};
void glo_addVar(const char name[], int type) {
int count;
for (count = 0; count < glo_symbol_table.size; count++) {
if (!strcmp(glo_symbol_table.entries[count].name, name)) {
fprintf(stderr,
"semantic error, redefinition of variable %s near line %d\n",
name, lineno);
return;
}
}
if (++glo_symbol_table.size > glo_symbol_table.maxsize) {
fprintf(stderr, "too many variables near line %d\n", lineno);
exit(1);
}
strcpy(glo_symbol_table.entries[glo_symbol_table.size - 1].name, name);
glo_symbol_table.entries[glo_symbol_table.size - 1].type = type;
glo_symbol_table.entries[glo_symbol_table.size - 1].addr =
(glo_symbol_table.size - 1) * 8;
}
// Verifies that the variable exists and returns the type
int glo_lookup(const char name[]) {
int count;
for (count = 0; count < glo_symbol_table.size; count++) {
if (!strcmp(glo_symbol_table.entries[count].name, name)) {
return glo_symbol_table.entries[count].type;
}
}
fprintf(stderr, "No definition of the variable %s near line %d\n", name,
lineno);
return -1;
}
int glo_get_addr(const char name[]) {
int count;
for (count = 0; count < glo_symbol_table.size; count++) {
if (!strcmp(glo_symbol_table.entries[count].name, name)) {
return glo_symbol_table.entries[count].addr;
}
}
fprintf(stderr, "No definition of the variable %s near line %d\n", name,
lineno);
return -1;
}
void glo_display_table() {
int count;
for (count = 0; count < glo_symbol_table.size; count++) {
if (glo_symbol_table.entries[count].type == INT)
printf(";entier: %s, pos: %d \n",
glo_symbol_table.entries[count].name,
glo_symbol_table.entries[count].addr);
else
printf(";caractere: %s, pos: %d \n",
glo_symbol_table.entries[count].name,
glo_symbol_table.entries[count].addr);
}
printf("\n");
}
void loc_addVar(const char name[], int type) {
int count;
for (count = 0; count < loc_symbol_table.size; count++) {
if (!strcmp(loc_symbol_table.entries[count].name, name)) {
fprintf(stderr,
"semantic error, redefinition of variable %s near line %d\n",
name, lineno);
return;
}
}
if (++loc_symbol_table.size > loc_symbol_table.maxsize) {
fprintf(stderr, "too many variables near line %d\n", lineno);
exit(1);
}
strcpy(loc_symbol_table.entries[loc_symbol_table.size - 1].name, name);
loc_symbol_table.entries[loc_symbol_table.size - 1].type = type;
loc_symbol_table.entries[loc_symbol_table.size - 1].addr =
(loc_symbol_table.size - 1) * 8;
}
int loc_lookup(const char name[]) {
int count;
for (count = 0; count < loc_symbol_table.size; count++) {
if (!strcmp(loc_symbol_table.entries[count].name, name)) {
return loc_symbol_table.entries[count].type;
}
}
//Check in global table
for (count = 0; count < glo_symbol_table.size; count++) {
if (!strcmp(glo_symbol_table.entries[count].name, name)) {
return glo_symbol_table.entries[count].type;
}
}
fprintf(stderr, "No definition of the variable %s near line %d\n", name,
lineno);
return -1;
}
int loc_get_addr(const char name[]) {
int count;
for (count = 0; count < loc_symbol_table.size; count++) {
if (!strcmp(loc_symbol_table.entries[count].name, name)) {
return loc_symbol_table.entries[count].addr;
}
}
fprintf(stderr, "No definition of the variable %s near line %d\n", name,
lineno);
return -1;
}
void loc_display_table() {
int count;
for (count = 0; count < loc_symbol_table.size; count++) {
if (loc_symbol_table.entries[count].type == INT)
printf(";entier: %s, pos: %d \n",
loc_symbol_table.entries[count].name,
loc_symbol_table.entries[count].addr);
else
printf(";caractere: %s, pos: %d \n",
loc_symbol_table.entries[count].name,
loc_symbol_table.entries[count].addr);
}
printf("\n");
}
void loc_clean_table() {
int i;
for (i = 0; i < loc_symbol_table.size; i++) {
printf("pop eax\n");
}
loc_symbol_table.size = 0;
}
static char *string_of_type(int type) {
switch (type) {
case INT: return "INT";
case CHAR: return "CHAR";
default: return "UNEXPECTED";
}
}
void check_expected_type(int type_to_check, int type_expected) {
if (type_to_check != type_expected)
fprintf(stderr, "Expected type : %s -> Got type : %s (near line %d)\n",
string_of_type(type_to_check),
string_of_type(type_to_check),
lineno);
}
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