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Downright
2025-03-24 00:44:52 +08:00
parent 3e80cb8f3f
commit a36f73c8a2
7 changed files with 549 additions and 110 deletions
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140
src/ASTPrinter.cpp
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@@ -133,69 +133,58 @@ std::any ASTPrinter::visitBlockStmt(SysYParser::BlockStmtContext *ctx){
}
// std::any ASTPrinter::visitBlockItem(SysYParser::BlockItemContext *ctx);
std::any ASTPrinter::visitStmt(SysYParser::StmtContext *ctx){
if(ctx->lValue()&& ctx->exp()) {
cout << getIndent();
ctx->lValue()->accept(this);
cout << ' ' << ctx->ASSIGN()->getText() <<' ';
std::any ASTPrinter::visitAssignStmt(SysYParser::AssignStmtContext *ctx){
ctx->lValue()->accept(this);
cout << ' ' << ctx->ASSIGN()->getText() << ' ';
ctx->exp()->accept(this);
cout << ctx->SEMICOLON()->getText() << '\n';
return nullptr;
}
std::any ASTPrinter::visitExpStmt(SysYParser::ExpStmtContext *ctx){
if (ctx->exp()) {
ctx->exp()->accept(this);
cout << ctx->SEMICOLON()->getText() << endl;
}
else if(ctx->blockStmt()){
ctx->blockStmt()->accept(this);
cout << ctx->SEMICOLON()->getText() << '\n';
return nullptr;
}
std::any ASTPrinter::visitIfStmt(SysYParser::IfStmtContext *ctx){
cout << getIndent() << ctx->IF()->getText() << ' ' << ctx->LPAREN()->getText();
ctx->cond()->accept(this);
cout << ctx->RPAREN()->getText() << ' ';
ctx->stmt(0)->accept(this);
if (ctx->ELSE()) {
cout << getIndent() << ctx->ELSE()->getText() << ' ';
ctx->stmt(1)->accept(this);
}
else if(ctx->IF()){
cout << getIndent() << "if (";
ctx->cond()->accept(this);
cout << ")";
// visit ctx->stmt(0) to judge if it is a blockStmt or a Lvale=exp
if(ctx->stmt(0)->blockStmt())ctx->stmt(0)->accept(this);
else{
cout << " {"<< endl;
indentLevel++;
ctx->stmt(0)->accept(this);
indentLevel--;
cout << getIndent() << "}" << endl;
}
if (ctx->stmt().size() > 1) {
cout << getIndent() << "else";
if(ctx->stmt(1)->blockStmt())ctx->stmt(1)->accept(this);
else{
cout << " {"<< endl;
indentLevel++;
ctx->stmt(1)->accept(this);
indentLevel--;
cout << getIndent() << "}" << endl;
}
}
}
else if(ctx->WHILE()){
cout << getIndent() << "while (";
ctx->cond()->accept(this);
cout << ")";
if(ctx->stmt(0)->blockStmt())ctx->stmt(0)->accept(this);
else{
cout << " {"<< endl;
indentLevel++;
ctx->stmt(0)->accept(this);
indentLevel--;
cout << getIndent() << "}" << endl;
}
}
else if(ctx->BREAK()){
cout << getIndent() << "break;" << endl;
}
else if(ctx->CONTINUE()){
cout << getIndent() << "continue;" << endl;
}
else if(ctx->RETURN()){
cout << getIndent() << "return";
if(ctx->exp()){
cout << ' ';
ctx->exp()->accept(this);
}
cout << ctx->SEMICOLON()->getText() << endl;
return nullptr;
}
std::any ASTPrinter::visitWhileStmt(SysYParser::WhileStmtContext *ctx){
cout << getIndent() << ctx->WHILE()->getText() << ' ' << ctx->LPAREN()->getText();
ctx->cond()->accept(this);
cout << ctx->RPAREN()->getText() << ' ';
ctx->stmt()->accept(this);
return nullptr;
}
std::any ASTPrinter::visitBreakStmt(SysYParser::BreakStmtContext *ctx){
cout << getIndent() << ctx->BREAK()->getText() << ctx->SEMICOLON()->getText() << '\n';
return nullptr;
}
std::any ASTPrinter::visitContinueStmt(SysYParser::ContinueStmtContext *ctx){
cout << getIndent() << ctx->CONTINUE()->getText() << ctx->SEMICOLON()->getText() << '\n';
return nullptr;
}
std::any ASTPrinter::visitReturnStmt(SysYParser::ReturnStmtContext *ctx){
cout << getIndent() << ctx->RETURN()->getText() << ' ';
if (ctx->exp()) {
ctx->exp()->accept(this);
}
cout << ctx->SEMICOLON()->getText() << '\n';
return nullptr;
}
@@ -211,6 +200,12 @@ std::any ASTPrinter::visitLValue(SysYParser::LValueContext *ctx){
return nullptr;
}
// std::any ASTPrinter::visitPrimaryExp(SysYParser::PrimaryExpContext *ctx);
std::any ASTPrinter::visitParenExp(SysYParser::ParenExpContext *ctx){
cout << ctx->LPAREN()->getText();
ctx->exp()->accept(this);
cout << ctx->RPAREN()->getText();
return nullptr;
}
std::any ASTPrinter::visitNumber(SysYParser::NumberContext *ctx) {
if(ctx->ILITERAL())cout << ctx->ILITERAL()->getText();
@@ -222,28 +217,15 @@ std::any ASTPrinter::visitString(SysYParser::StringContext *ctx) {
cout << ctx->STRING()->getText();
return nullptr;
}
std::any ASTPrinter::visitUnaryExp(SysYParser::UnaryExpContext *ctx){
if(ctx->primaryExp())
ctx->primaryExp()->accept(this);
else if(ctx->Ident()){
cout << ctx->Ident()->getText() << ctx->LPAREN()->getText();
if(ctx->funcRParams())
ctx->funcRParams()->accept(this);
if (ctx->RPAREN())
cout << ctx->RPAREN()->getText();
else
cout << "<missing \')\'?>";
}
else if(ctx->unaryExp()){
cout << ctx->unaryOp()->getText();
ctx->unaryExp()->accept(this);
}
else
ctx->accept(this);
// std::any visitUnaryExp(SysYParser::UnaryExpContext *ctx);
// std::any ASTPrinter::visitUnaryOp(SysYParser::UnaryOpContext *ctx);
std::any ASTPrinter::visitCall(SysYParser::CallContext *ctx){
cout << ctx->Ident()->getText() << ctx->LPAREN()->getText();
if(ctx->funcRParams())
ctx->funcRParams()->accept(this);
cout << ctx->RPAREN()->getText();
return nullptr;
}
// std::any ASTPrinter::visitUnaryOp(SysYParser::UnaryOpContext *ctx);
any ASTPrinter::visitFuncRParams(SysYParser::FuncRParamsContext *ctx) {
if (ctx->exp().empty())