C++ (Cpp) symbol_table_get_valueの例

コード例 #1

ファイル: assembler.c プロジェクト: eranb/delete-me

//gets the value of a given symbol
bool assembler_get_symbol_value(char *symbol, int *data, int ic)
{
	symbol_table_t *correct_table = NULL;

	if(!symbol_table_symbol_exists(assembler_data_table, symbol)) {
		if (!symbol_table_symbol_exists(assembler_call_table, symbol)) {
			if(!symbol_table_symbol_exists(assembler_extern_table, symbol)) {
				return false;
			}
			// add value in extern table
			symbol_table_append(&assembler_extern_table_data, symbol, ic);
			*data = 1;
			return true;
		} else {
			correct_table = assembler_call_table;
		}
	} else {
		correct_table = assembler_data_table;
	}


	*data = symbol_table_get_value(correct_table, symbol);

	return true;
}

コード例 #2

ファイル: symbol_table.c プロジェクト: eranb/delete-me

// gets the value of a symbol from the symbol table
int symbol_table_get_value(symbol_table_t *table, char *symbol)
{
	if(0 == strcmp(table->symbol, symbol)) {
		return table->counter;
	}

	if (table->previous == NULL) {
		return -1;
	}

	return symbol_table_get_value(table->previous, symbol);
}

コード例 #3

ファイル: vm_state.c プロジェクト: ehostunreach/toy

struct vm_value *
vm_state_get_value(struct vm_state *vm, const char *identifier)
{
   return symbol_table_get_value(vm->symtab, identifier);
}

コード例 #4

ファイル: assembler.c プロジェクト: eranb/delete-me

//full proccess a code file, this is the assembler's "main" function
void assembler_proccess_file(FILE *code_file, FILE *obj_file, FILE *entry_file, FILE *ext_file)
{
  char buf[100];
	int ic = 100;
	int dc = 0;

	char line[ASSEMBLER_LINE_SIZE] = {0, };
	char current_data = 0;
	symbol_table_t *current_table = NULL;
	symbol_table_t *containing_table = NULL;

	if (NULL == code_file) {
		printf("Error, should be given a valid file.\n");
		goto Exit;
	}

	/* First loop */
	while (NULL != fgets(line, ASSEMBLER_LINE_SIZE, code_file)) {
		assembler_first_loop(line, &ic, &dc);
	}

	if (!should_compile) {
		printf("not compiling!\n");	
		return;
	}

	fseek(code_file, 0, SEEK_SET);
	/* adds ic to all data symbols */
	symbol_table_add_to_all_symbols(assembler_data_table, ic);

	ic = 100;

	/* Second loop */
	while (NULL != fgets(line, ASSEMBLER_LINE_SIZE, code_file)) {
		assembler_second_loop(line, obj_file, &ic);
	}

	//write data
	fclose(data_file);
	data_file = fopen("/tmp/data.section", "rb");	
	while(0!=fread(&current_data,1,1,data_file)) {
    fprintf(obj_file, "%04d %06d\n", atoi(base4(buf, ic)),atoi(base4(buf, (current_data & 0xFFF))));
		ic++;
	}
	
	//write extrnal
	current_table = assembler_extern_table_data->previous;
	while(current_table != NULL) {
		fprintf(ext_file, "%s %X\n", current_table->symbol, current_table->counter);
		current_table = current_table->previous;
	}
	
	//write entry
	current_table = assembler_entry_table->previous;
	while(current_table != NULL) {
		//if in: call, data then write
		if(symbol_table_symbol_exists(assembler_data_table, current_table->symbol)) {
			containing_table = assembler_data_table;
		} else if(symbol_table_symbol_exists(assembler_call_table, current_table->symbol)) {
			containing_table = assembler_call_table;
		}
		else {
			printf("No such entry: %s\n", current_table->symbol);
			should_compile = false;
		}

		fprintf(entry_file, "%s %X\n", current_table->symbol, symbol_table_get_value(containing_table, current_table->symbol));
		current_table = current_table->previous;
	}

	if (!should_compile) {
		printf("not compiling!\n");	
		return;
	}
Exit:
	return;
}