value.c

#include <stdio.h>
#include <string.h>

#include "memory.h"
#include "value.h"
#include "object.h"

void initValueArray(ValueArray* array) {
    array->values = NULL;
    array->capacity = 0;
    array->count = 0;
}

void writeValueArray(ValueArray* array, Value value) {
    if (array->capacity < array->count + 1) {
        int oldCapacity = array->capacity;
        array->capacity = GROW_CAPACITY(oldCapacity);
        array->values = GROW_ARRAY(Value, array->values, oldCapacity, array->capacity);
    } 
    array->values[array->count] = value;
    ++array->count;
}

void freeValueArray(ValueArray* array) {
    FREE_ARRAY(Value, array->values, array->capacity);
    initValueArray(array);
}

void printValue(Value value) { 
    switch (value.type) {
        case VAL_BOOL:   printf(AS_BOOL(value) ? "true" : "false"); break;
        case VAL_NIL:    printf("nil"); break;
        case VAL_NUMBER: printf("%g", AS_NUMBER(value)); break;
        case VAL_OBJ:    printObject(value); break;
    }
}

bool valuesEqual(Value a, Value b) {
    if (a.type != b.type)   return false;
    switch (a.type) {
        case VAL_BOOL:      return AS_BOOL(a) == AS_BOOL(b);
        case VAL_NIL:       return true;
        case VAL_NUMBER:    return AS_NUMBER(a) == AS_NUMBER(b);
        case VAL_OBJ:       return AS_OBJ(a) == AS_OBJ(b);
        default:            return false; // Unreachable
    }
}