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JSSpecCompiler: Parse optional arguments groups

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Dan Klishch 2024-01-21 14:46:33 -05:00 • committed by Andrew Kaster
parent 3e6a07154b
commit a35a751f9e
Notes: sideshowbarker 2024-07-17 03:05:16 +09:00
8 changed files with 72 additions and 11 deletions
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48
Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Parser/TextParser.cpp
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@ -13,6 +13,8 @@ namespace JSSpecCompiler {
void TextParser::save_error(Variant<TokenType, StringView, CustomMessage>&& expected)
{
if (expected.has<TokenType>() && expected.get<TokenType>() == TokenType::Invalid)
return;
if (m_max_parsed_tokens > m_next_token_index)
return;
if (m_max_parsed_tokens < m_next_token_index)
@ -650,21 +652,45 @@ TextParseErrorOr<Vector<StringView>> TextParser::parse_qualified_name()
// <function_arguments> :== '(' (<word> (, <word>)*)? ')'
TextParseErrorOr<Vector<FunctionArgument>> TextParser::parse_function_arguments_in_declaration()
{
Vector<FunctionArgument> arguments;
TRY(consume_token_with_type(TokenType::ParenOpen));
Vector<FunctionArgument> arguments;
size_t optional_arguments_group = 0;
while (true) {
if (arguments.is_empty()) {
auto argument = TRY(consume_token_with_one_of_types({ TokenType::ParenClose, TokenType::Identifier }));
if (argument.type == TokenType::ParenClose)
break;
arguments.append({ argument.data });
} else {
arguments.append({ TRY(consume_token_with_type(TokenType::Identifier)).data });
}
auto next_token = TRY(consume_token_with_one_of_types({ TokenType::ParenClose, TokenType::Comma }));
if (next_token.type == TokenType::ParenClose)
Token token = TRY(consume_token_with_one_of_types({
TokenType::SquareBracketOpen,
arguments.is_empty() ? TokenType::Identifier : TokenType::Comma,
!optional_arguments_group ? TokenType::ParenClose : TokenType::Invalid,
optional_arguments_group ? TokenType::SquareBracketClose : TokenType::Invalid,
}));
StringView identifier;
if (token.type == TokenType::SquareBracketClose) {
VERIFY(optional_arguments_group != 0);
for (size_t i = 1; i < optional_arguments_group; ++i)
TRY(consume_token_with_type(TokenType::SquareBracketClose));
TRY(consume_token_with_type(TokenType::ParenClose));
break;
} else if (token.type == TokenType::ParenClose) {
VERIFY(optional_arguments_group == 0);
break;
} else if (token.type == TokenType::SquareBracketOpen) {
++optional_arguments_group;
if (!arguments.is_empty())
TRY(consume_token_with_type(TokenType::Comma));
identifier = TRY(consume_token_with_type(TokenType::Identifier)).data;
} else if (token.type == TokenType::Comma) {
identifier = TRY(consume_token_with_type(TokenType::Identifier)).data;
} else {
VERIFY(token.type == TokenType::Identifier);
identifier = token.data;
}
arguments.append({ identifier, optional_arguments_group });
}
return arguments;
}