/*
 * Copyright (C) 2012 David Anderson
 *
 * This file is part of JITCraft.
 *
 * JITCraft is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option)
 * any later version.
 * 
 * Foobar is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * JITCraft. If not, see http://www.gnu.org/licenses/.
 */
#include "Types.h"
#include "Zone.h"
#include "Heap-inl.h"

using namespace jc;

Type *
Type::NewPrimitive(Zone *zone, Name *tag)
{
    Object *obj = zone->allocate(MapKind_Type, sizeof(Type), Heap::Tenure_Old);
    if (!obj)
        return NULL;

    Type *type = Type::cast(obj);
    type->kind_ = PRIMITIVE;
    type->tag_ = tag;
    type->contained_ = NULL;

    if (tag && strcmp(tag, "Float") == 0)
        type->primitive_ = PrimitiveType_Float;
    else if (tag && strcmp(tag, "String") == 0)
        type->primitive_ = PrimitiveType_Char;
    else
        type->primitive_ = PrimitiveType_Int32;
    return type;
}

Type *
Type::NewPrimitive(Zone *zone, PrimitiveType prim)
{
    Object *obj = zone->allocate(MapKind_Type, sizeof(Type), Heap::Tenure_Old);
    if (!obj)
        return NULL;

    Type *type = Type::cast(obj);
    type->kind_ = PRIMITIVE;
    type->tag_ = NULL;
    type->contained_ = NULL;
    type->primitive_ = prim;
    return type;
}

Type *
Type::NewArray(Zone *zone, Type *contained, int elements, bool isConst)
{
    Object *obj = zone->allocate(MapKind_Type, sizeof(Type), Heap::Tenure_Old);
    if (!obj)
        return NULL;

    Type *type = Type::cast(obj);
    type->kind_ = ARRAY;
    type->tag_ = NULL;
    type->contained_ = contained;
    type->elements_ = elements;
    if (contained->isPrimitive())
        type->levels_ = 1;
    else
        type->levels_ = contained->levels() + 1;
    type->const_ = isConst;
    return type;
}

Type *
Type::NewReference(Zone *zone, Type *contained)
{
    Object *obj = zone->allocate(MapKind_Type, sizeof(Type), Heap::Tenure_Old);
    if (!obj)
        return NULL;

    Type *type = Type::cast(obj);
    type->kind_ = REFERENCE;
    type->tag_ = NULL;
    type->contained_ = contained;
    return type;
}

Type *
Type::NewFunction(Zone *zone, Type *returnType, FixedArray *parameters)
{
    Object *obj = zone->allocate(MapKind_Type, sizeof(Type), Heap::Tenure_Old);
    if (!obj)
        return NULL;

    Type *type = Type::cast(obj);
    type->kind_ = FUNCTION;
    type->contained_ = returnType;
    type->parameters_ = parameters;
    return type;
}