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LibCpp: Parse C++ cast expressions

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parse static_cast, reinterpret_cast, dynamic_cast & const_cast
This commit is contained in:
Itamar 2021-03-31 22:21:31 +03:00 • committed by Andreas Kling
parent 646aaa111b
commit 8962581c9c
4 changed files with 74 additions and 1 deletions
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40
Userland/Libraries/LibCpp/Parser.cpp
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@ -440,6 +440,9 @@ NonnullRefPtr<Expression> Parser::parse_primary_expression(ASTNode& parent)
return parse_literal(parent);
}
if (match_cpp_cast_expression())
return parse_cpp_cast_expression(parent);
if (match_name()) {
if (match_function_call() != TemplatizedMatchResult::NoMatch)
return parse_function_call(parent);
@ -827,7 +830,8 @@ bool Parser::match_expression()
auto token_type = peek().type();
return match_literal()
|| token_type == Token::Type::Identifier
|| match_unary_expression();
|| match_unary_expression()
|| match_cpp_cast_expression();
}
bool Parser::eof() const
@ -1341,4 +1345,38 @@ NonnullRefPtr<Name> Parser::parse_name(ASTNode& parent)
return name_node;
}
bool Parser::match_cpp_cast_expression()
{
save_state();
ScopeGuard state_guard = [this] { load_state(); };
auto token = consume();
if (token.type() != Token::Type::Keyword)
return false;
auto text = token.text();
if (text == "static_cast" || text == "reinterpret_cast" || text == "dynamic_cast" || text == "const_cast")
return true;
return false;
}
NonnullRefPtr<CppCastExpression> Parser::parse_cpp_cast_expression(ASTNode& parent)
{
auto cast_expression = create_ast_node<CppCastExpression>(parent, position(), {});
cast_expression->m_cast_type = consume(Token::Type::Keyword).text();
consume(Token::Type::Less);
cast_expression->m_type = parse_type(*cast_expression);
consume(Token::Type::Greater);
consume(Token::Type::LeftParen);
cast_expression->m_expression = parse_expression(*cast_expression);
consume(Token::Type::RightParen);
cast_expression->set_end(position());
return cast_expression;
}
}