// 管理基础类型、整型常量池和临时名生成。
#include "ir/IR.h"

#include <sstream>

namespace ir {

Context::~Context() = default;

const std::shared_ptr<Type>& Context::Void() {
  if (!void_) {
    void_ = std::make_shared<Type>(Type::Kind::Void);
  }
  return void_;
}

const std::shared_ptr<Type>& Context::Int32() {
  if (!int32_) {
    int32_ = std::make_shared<Type>(Type::Kind::Int32);
  }
  return int32_;
}

const std::shared_ptr<Type>& Context::PtrInt32() {
  if (!ptr_i32_) {
    ptr_i32_ = std::make_shared<Type>(Type::Kind::PtrInt32);
  }
  return ptr_i32_;
}

ConstantInt* Context::GetConstInt(int v) {
  auto it = const_ints_.find(v);
  if (it != const_ints_.end()) return it->second.get();
  auto inserted =
      const_ints_.emplace(v, std::make_unique<ConstantInt>(Int32(), v)).first;
  return inserted->second.get();
}

std::string Context::NextTemp() {
  std::ostringstream oss;
  oss << "%" << ++temp_index_;
  return oss.str();
}

}  // namespace ir
