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#include "symboltable.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;
}
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 (++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;
}
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;
}
}
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");
}
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