#include "BasicBlock.h"
#include "Constant.h"
#include "Function.h"
#include "IRStmtBuilder.h"
#include "Module.h"
#include "Type.h"

#include <iostream>
#include <memory>

#ifdef DEBUG
#define DEBUG_OUTPUT std::cout << __LINE__ << std::endl;  // 输出行号的简单示例
#else
#define DEBUG_OUTPUT
#endif

#define CONST_INT(num) \
    ConstantInt::create(num, module)

#define CONST_FP(num) \
    ConstantFloat::create(num, module)

using namespace SysYF::IR;

int main() {
    auto module = Module::create("Assign code");  
    auto builder = IRStmtBuilder::create(nullptr, module);
    SysYF::Ptr<Type> Int32Type = Type::get_int32_type(module);
    SysYF::Ptr<Type> FloatType = Type::get_float_type(module);

    // main function
    auto mainFun = Function::create(FunctionType::create(Int32Type, {}),
                                    "main", module);
    auto bb = BasicBlock::create(module, "entry", mainFun);
    builder->set_insert_point(bb);
    auto retAlloca = builder->create_alloca(Int32Type);

    // b = 1.8
    auto bAlloca = builder->create_alloca(FloatType);
    builder->create_store(CONST_FP(1.8), bAlloca);

    // a[2] = {2}
    auto arrayType_a = ArrayType::get(Int32Type, 2);
    auto aAlloca = builder->create_alloca(arrayType_a);
    auto a0Gep = builder->create_gep(aAlloca, {CONST_INT(0), CONST_INT(0)});
    builder->create_store(CONST_INT(2), a0Gep);

    // a[0] * b
    auto a0Load = builder->create_load(a0Gep);
    auto a0Float = builder->create_sitofp(a0Load, FloatType);
    auto bLoad = builder->create_load(FloatType, bAlloca);
    auto a1res = builder->create_fmul(a0Float, bLoad);

    // store to a[1]
    auto a1res_int = builder->create_fptosi(a1res, Int32Type);
    auto a1Gep = builder->create_gep(aAlloca, {CONST_INT(0), CONST_INT(1)});
    builder->create_store(a1res_int, a1Gep);

    // ret
    builder->create_store(a1res_int, retAlloca);
    auto retLoad = builder->create_load(retAlloca);
    builder->create_ret(retLoad);

    std::cout << module->print();
    return 0;
}