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LibCpp: Parse braced initialization list

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This commit is contained in:
Itamar 2021-04-02 11:15:22 +03:00 • committed by Andreas Kling
parent d482b3fd60
commit 44833f1621
4 changed files with 51 additions and 10 deletions
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8
Userland/Libraries/LibCpp/AST.cpp
View file

@ -540,4 +540,12 @@ void SizeofExpression::dump(size_t indent) const
m_type->dump(indent + 1);
}
void BracedInitList::dump(size_t indent) const
{
ASTNode::dump(indent);
for (auto& exp : m_expressions) {
exp.dump(indent+1);
}
}
}

13
Userland/Libraries/LibCpp/AST.h
View file

@ -729,4 +729,17 @@ public:
RefPtr<Type> m_type;
};
class BracedInitList : public Expression {
public:
BracedInitList(ASTNode* parent, Optional<Position> start, Optional<Position> end, const String& filename)
: Expression(parent, start, end, filename)
{
}
virtual ~BracedInitList() override = default;
virtual const char* class_name() const override { return "BracedInitList"; }
virtual void dump(size_t indent) const override;
NonnullRefPtrVector<Expression> m_expressions;
};
}

32
Userland/Libraries/LibCpp/Parser.cpp
View file

@ -450,6 +450,9 @@ NonnullRefPtr<Expression> Parser::parse_primary_expression(ASTNode& parent)
if (match_sizeof_expression())
return parse_sizeof_expression(parent);
if (match_braced_init_list())
return parse_braced_init_list(parent);
if (match_name()) {
if (match_function_call() != TemplatizedMatchResult::NoMatch)
return parse_function_call(parent);
@ -851,7 +854,8 @@ bool Parser::match_expression()
|| token_type == Token::Type::Identifier
|| match_unary_expression()
|| match_cpp_cast_expression()
|| match_sizeof_expression();
|| match_sizeof_expression()
|| match_braced_init_list();
}
bool Parser::eof() const
@ -1116,13 +1120,9 @@ NonnullRefPtr<MemberDeclaration> Parser::parse_member_declaration(ASTNode& paren
auto identifier_token = consume(Token::Type::Identifier);
member_decl->m_name = text_of_token(identifier_token);
RefPtr<Expression> initial_value;
if (match(Token::Type::LeftCurly)) {
consume(Token::Type::LeftCurly);
initial_value = parse_expression(*member_decl);
consume(Token::Type::RightCurly);
if (match_braced_init_list()) {
member_decl->m_initial_value = parse_braced_init_list(*member_decl);
}
member_decl->m_initial_value = move(initial_value);
consume(Token::Type::Semicolon);
member_decl->set_end(position());
@ -1426,4 +1426,22 @@ NonnullRefPtr<SizeofExpression> Parser::parse_sizeof_expression(ASTNode& parent)
return exp;
}
bool Parser::match_braced_init_list()
{
return match(Token::Type::LeftCurly);
}
NonnullRefPtr<BracedInitList> Parser::parse_braced_init_list(ASTNode& parent)
{
auto init_list = create_ast_node<BracedInitList>(parent, position(), {});
consume(Token::Type::LeftCurly);
while (!eof() && peek().type() != Token::Type::RightCurly) {
init_list->m_expressions.append(parse_expression(*init_list));
}
consume(Token::Type::RightCurly);
init_list->set_end(position());
return init_list;
}
}

2
Userland/Libraries/LibCpp/Parser.h
View file

@ -91,6 +91,7 @@ private:
bool match_name();
bool match_cpp_cast_expression();
bool match_sizeof_expression();
bool match_braced_init_list();
enum class TemplatizedMatchResult {
NoMatch,
@ -135,6 +136,7 @@ private:
NonnullRefPtr<Name> parse_name(ASTNode& parent);
NonnullRefPtr<CppCastExpression> parse_cpp_cast_expression(ASTNode& parent);
NonnullRefPtr<SizeofExpression> parse_sizeof_expression(ASTNode& parent);
NonnullRefPtr<BracedInitList> parse_braced_init_list(ASTNode& parent);
bool match(Token::Type);
Token consume(Token::Type);