#include "value.h"

uint32_t globalValueIncrementer = 0;

char* getIncrementedName(void) {
    char* buffer = malloc(32);
    if (buffer == NULL) return buffer;

    snprintf(buffer, 32, "%%%d", globalValueIncrementer);

    globalValueIncrementer++;

    return buffer;
}

GravityValue gravityNewValue(const char* name, GravityType type) {
    GravityValue newValue = malloc(sizeof(struct GravityOpaqueValue));
    if (newValue == NULL) return newValue;

    newValue->kind = GravityLocalValueKind;
    newValue->type = type;

    if (name == NULL) {
        name = getIncrementedName();
    } else {
        name = strdup(name);
    }

    newValue->name = name;

    return newValue;
}

GravityValue gravityTypeToTypeValue(GravityType type) {
    GravityType valueType = gravityCreateType();
    valueType->typeKind = GravityTypeTypeKind;
    valueType->typeData = type;

    GravityValue newValue = gravityNewValue(NULL, valueType);
    if (newValue == NULL) return newValue;

    return newValue;
}

char* gravityValueToCStr(GravityValue value) {
    switch (value->kind) {
        case GravityLocalValueKind:
            
            return strdup(value->name);

        case GravityConstantValueKind: {
            StringBuffer buff;
            initStringBuff(&buff);

            switch (value->type->typeKind) {
                case GravityIntTypeKind: {
                    sbAppend(&buff, "%ld", value->constant.intValue);
                    break;
                }

                case GravityTypeTypeKind: {
                    sbAppend(&buff, "%s", gravityTypeToCStr(value->type->typeData));
                    break;
                }

                default: assert(false);
            }

            return buff.data;
        }

        default: assert(false);
    }
}

GravityValue gravityNewConstant(GravityType type) {
    GravityValue newValue = malloc(sizeof(struct GravityOpaqueValue));
    if (newValue == NULL) return newValue;

    newValue->kind = GravityConstantValueKind;
    newValue->type = type;
    newValue->name = NULL;

    return newValue;
}

GravityValue newIntConstant(GravityType intType, int64_t value) {
    assert(intType->typeKind == GravityIntTypeKind);

    GravityValue newValue = gravityNewConstant(intType);
    if (newValue == NULL) return newValue;

    newValue->constant.intValue = value;

    return newValue;
}