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#include "StatementNode.hh"
namespace pcc {
template <> Value StatementListNode::CodeGen() {
Value result = nullptr;
for (auto& child : childs_) {
result = child->CodeGen();
}
return result;
}
EmptyStatementNode::EmptyStatementNode(Context* context)
: BaseNode(context) {}
Value EmptyStatementNode::CodeGen() { return nullptr; }
AssignStatementNode::AssignStatementNode(Context* context,
std::shared_ptr<ExprNode> lhs,
std::shared_ptr<ExprNode> rhs)
: BaseNode(context)
, lhs_(lhs)
, rhs_(rhs) {}
Value AssignStatementNode::CodeGen() {
Value LeftValue = lhs_->CodeGen();
Value RightValue = rhs_->CodeGen();
RightValue = context_->GetTypeManager()->CreateCast(
lhs_->GetType(), rhs_->GetType(), RightValue, context_);
context_->GetBuilder()->CreateStore(RightValue, LeftValue);
return nullptr;
}
IfStatementNode::IfStatementNode(Context* context,
std::shared_ptr<ExprNode> expr,
std::shared_ptr<BaseNode> ThenPart,
std::shared_ptr<BaseNode> ElsePart)
: BaseNode(context)
, expr_(expr)
, ThenPart_(ThenPart)
, ElsePart_(ElsePart) {}
Value IfStatementNode::CodeGen() {
llvm::IRBuilder<>* builder = context_->GetBuilder();
TypeManager* manager = context_->GetTypeManager();
std::shared_ptr<Type> boolean =
manager->GetBuiltinType(BuiltinType::BOOLEAN);
llvm::Function* body = builder->GetInsertBlock()->getParent();
llvm::BasicBlock* ThenBlock =
llvm::BasicBlock::Create(GlobalLLVMContext, "then", body);
llvm::BasicBlock* EndBlock =
llvm::BasicBlock::Create(GlobalLLVMContext, "endif");
Value cond = expr_->CodeGen();
cond = manager->CreateCast(boolean, expr_->GetType(), cond, context_);
if (ElsePart_ != nullptr) {
llvm::BasicBlock* ElseBlock =
llvm::BasicBlock::Create(GlobalLLVMContext, "else");
builder->CreateCondBr(cond, ThenBlock, ElseBlock);
builder->SetInsertPoint(ThenBlock);
ThenPart_->CodeGen();
builder->CreateBr(EndBlock);
body->getBasicBlockList().push_back(ElseBlock);
builder->SetInsertPoint(ElseBlock);
ElsePart_->CodeGen();
builder->CreateBr(EndBlock);
body->getBasicBlockList().push_back(EndBlock);
builder->SetInsertPoint(EndBlock);
return nullptr;
}
builder->CreateCondBr(cond, ThenBlock, EndBlock);
builder->SetInsertPoint(ThenBlock);
ThenPart_->CodeGen();
builder->CreateBr(EndBlock);
body->getBasicBlockList().push_back(EndBlock);
builder->SetInsertPoint(EndBlock);
return nullptr;
}
WhileStatementNode::WhileStatementNode(Context* context,
std::shared_ptr<ExprNode> expr,
std::shared_ptr<BaseNode> WhileBody)
: BaseNode(context)
, expr_(expr)
, WhileBody_(WhileBody) {}
Value WhileStatementNode::CodeGen() {
llvm::IRBuilder<>* builder = context_->GetBuilder();
TypeManager* manager = context_->GetTypeManager();
std::shared_ptr<Type> boolean =
manager->GetBuiltinType(BuiltinType::BOOLEAN);
llvm::Function* body = builder->GetInsertBlock()->getParent();
llvm::BasicBlock* StartBlock =
llvm::BasicBlock::Create(GlobalLLVMContext, "start", body);
llvm::BasicBlock* LoopBlock =
llvm::BasicBlock::Create(GlobalLLVMContext, "loop");
llvm::BasicBlock* EndBlock =
llvm::BasicBlock::Create(GlobalLLVMContext, "done");
builder->CreateBr(StartBlock);
builder->SetInsertPoint(StartBlock);
Value cond = expr_->CodeGen();
cond = manager->CreateCast(boolean, expr_->GetType(), cond, context_);
builder->CreateCondBr(cond, LoopBlock, EndBlock);
body->getBasicBlockList().push_back(LoopBlock);
builder->SetInsertPoint(LoopBlock);
WhileBody_->CodeGen();
builder->CreateBr(StartBlock);
body->getBasicBlockList().push_back(EndBlock);
builder->SetInsertPoint(EndBlock);
return nullptr;
}
RepeatStatementNode::RepeatStatementNode(Context* context,
std::shared_ptr<ExprNode> expr,
std::shared_ptr<BaseNode> RepeatBody)
: BaseNode(context)
, expr_(expr)
, RepeatBody_(RepeatBody) {}
Value RepeatStatementNode::CodeGen() {
llvm::IRBuilder<>* builder = context_->GetBuilder();
TypeManager* manager = context_->GetTypeManager();
std::shared_ptr<Type> boolean =
manager->GetBuiltinType(BuiltinType::BOOLEAN);
llvm::Function* body = builder->GetInsertBlock()->getParent();
llvm::BasicBlock* LoopBlock =
llvm::BasicBlock::Create(GlobalLLVMContext, "loop", body);
llvm::BasicBlock* EndBlock =
llvm::BasicBlock::Create(GlobalLLVMContext, "done");
builder->CreateBr(LoopBlock);
builder->SetInsertPoint(LoopBlock);
RepeatBody_->CodeGen();
Value cond = expr_->CodeGen();
cond = manager->CreateCast(boolean, expr_->GetType(), cond, context_);
builder->CreateCondBr(cond, EndBlock, LoopBlock);
body->getBasicBlockList().push_back(EndBlock);
builder->SetInsertPoint(EndBlock);
return nullptr;
}
} // namespace pcc
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