#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; 
#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(int argc, const char * argv[]) {
    auto module = Module::create("SysYF 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);
    SysYF::Ptr<Type> ArrayType = Type::get_array_type(Int32Type, 2);
    std::vector<SysYF::Ptr<Type>> Ints(2, Int32Type);
    //add函数
    auto addFunTy = FunctionType::create(Int32Type, Ints);
    auto addFun = Function::create(addFunTy,
                                   "add", module);
    auto bb = BasicBlock::create(module, "entry", addFun);
    builder->set_insert_point(bb);
    auto a_add_alloc = builder->create_alloca(Int32Type);
    auto b_add_alloc = builder->create_alloca(Int32Type);
    auto ret_add_alloc = builder->create_alloca(Int32Type);
    std::vector<SysYF::Ptr<Value>> args;  // 获取climbStairs函数的形参,通过Function中的iterator
    for (auto arg = addFun->arg_begin(); arg != addFun->arg_end(); arg++) {
      args.push_back(*arg);   // * 号运算符是从迭代器中取出迭代器当前指向的元素
    }
    builder->create_store(args[0], a_add_alloc);
    builder->create_store(args[1], b_add_alloc);
    auto a_add_load = builder->create_load(a_add_alloc);
    auto b_add_load = builder->create_load(b_add_alloc);
    auto add = builder->create_iadd(a_add_load, b_add_load);
    auto sub = builder->create_isub(add, CONST_INT(1));
    builder->create_store(sub, ret_add_alloc);
    auto ret_add_load = builder->create_load(ret_add_alloc);
    builder->create_ret(ret_add_load);
    
    //main函数
    auto mainFun = Function::create(FunctionType::create(Int32Type, {}),
                                    "main", module);
    bb = BasicBlock::create(module, "entry", mainFun);
    builder->set_insert_point(bb);
    auto a_main_alloc = builder->create_alloca(Int32Type);
    auto b_main_alloc = builder->create_alloca(Int32Type);
    auto c_main_alloc = builder->create_alloca(Int32Type);
    
    builder->create_store(CONST_INT(2), a_main_alloc);
    builder->create_store(CONST_INT(3), b_main_alloc);
    builder->create_store(CONST_INT(5), c_main_alloc );
    
    auto a_main_load = builder->create_load(a_main_alloc);
    auto b_main_load = builder->create_load(b_main_alloc);
    auto c_main_load = builder->create_load(c_main_alloc);
    
    auto call = builder->create_call(addFun, {a_main_load,b_main_load});
    auto add_main = builder->create_iadd(call, c_main_load);
    builder->create_ret(add_main);
    
    std::cout << module->print();
    return 0;
    
}