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JSSpecCompiler: Properly parse function calls with zero arguments

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We cannot handle them normally since we need text between parenthesis to
be a valid expression. As a workaround, we now push an artificial value
to stack to act as an argument (it'll be later removed during function
call canonicalization).
This commit is contained in:
Dan Klishch 2024-01-16 00:21:59 -05:00 • committed by Andrew Kaster
parent 14ee25b8ba
commit 33b36476d9
Notes: sideshowbarker 2024-07-17 22:09:47 +09:00
4 changed files with 50 additions and 1 deletions
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18
Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Parser/TextParser.cpp
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@ -228,6 +228,15 @@ ParseErrorOr<Tree> TextParser::parse_expression()
if (last_element_type == ExpressionType)
stack.append(Token { TokenType::FunctionCall, ""sv, m_node });
stack.append(token);
if (m_next_token_index + 1 < m_tokens.size()
&& m_tokens[m_next_token_index + 1].type == TokenType::ParenClose) {
// This is a call to function which does not take parameters. We cannot handle it
// normally since we need text between parenthesis to be a valid expression. As a
// workaround, we push an artificial tree to stack to act as an argument (it'll be
// removed later during function call canonicalization).
stack.append(zero_argument_function_call);
}
} else if (token.is_pre_merged_binary_operator()) {
THROW_PARSE_ERROR_IF(last_element_type != ExpressionType);
stack.append(token);
@ -492,7 +501,14 @@ ParseErrorOr<ClauseHeader> TextParser::parse_clause_header()
TRY(consume_token_with_type(TokenType::ParenOpen));
while (true) {
function_definition.arguments.append({ TRY(consume_token_with_type(TokenType::Identifier))->data });
if (function_definition.arguments.is_empty()) {
auto argument = TRY(consume_token_with_one_of_types({ TokenType::ParenClose, TokenType::Identifier }));
if (argument->type == TokenType::ParenClose)
break;
function_definition.arguments.append({ argument->data });
} else {
function_definition.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)
break;