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Add parse_initialization_statement

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This commit is contained in:
Sofia 2026-04-09 16:24:11 +03:00
parent 9969ad12f6
commit 48feebc714
1 changed files with 28 additions and 13 deletions
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41
src/parsing.cpp
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@ -43,6 +43,28 @@ namespace parsing {
}
}
Result<std::unique_ptr<AST::InitializationStatement>, std::string> parse_init_statement(token::TokenStream& stream) {
token::TokenStream inner{ stream };
try {
auto ty = parse_type(inner).unwrap();
auto name = inner.expect(token::Type::Ident);
std::optional<std::unique_ptr<AST::Expression>> expr = {};
if (inner.peek().type == token::Type::Symbol && inner.peek().content == "=") {
inner.expect(token::Type::Symbol, "=");
expr = parse_expression(inner).unwrap();
}
inner.expect(token::Type::Symbol, ";");
stream.m_position = inner.m_position;
return &std::make_unique<AST::InitializationStatement>(std::move(ty), name.content, std::move(expr));
}
catch (std::runtime_error error) {
return new std::string{ error.what() };
}
}
Result<std::unique_ptr<AST::Statement>, std::string> parse_statement(token::TokenStream& stream) {
token::TokenStream inner{ stream };
try {
@ -57,20 +79,13 @@ namespace parsing {
return new std::unique_ptr<AST::Statement>{ ret };
}
else if (inner.peek().type == token::Type::Ident) {
auto ty = parse_type(inner).unwrap();
auto name = inner.expect(token::Type::Ident);
std::optional<std::unique_ptr<AST::Expression>> expr = {};
if (inner.peek().type == token::Type::Symbol && inner.peek().content == "=") {
inner.expect(token::Type::Symbol, "=");
expr = parse_expression(inner).unwrap();
auto init = parse_init_statement(inner);
if (init.ok()) {
return new std::unique_ptr<AST::Statement>{ init.unwrap() };
}
else {
throw std::runtime_error("Expected initialization statement");
}
inner.expect(token::Type::Symbol, ";");
stream.m_position = inner.m_position;
auto init = new AST::InitializationStatement{ std::move(ty), name.content, std::move(expr) };
return new std::unique_ptr<AST::Statement>{ init };
}
else {
throw std::runtime_error("Expected return-keyword");