diff options
Diffstat (limited to 'Libraries/LibJS/Parser.cpp')
| -rw-r--r-- | Libraries/LibJS/Parser.cpp | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/Libraries/LibJS/Parser.cpp b/Libraries/LibJS/Parser.cpp index 082f83f457..77e892e553 100644 --- a/Libraries/LibJS/Parser.cpp +++ b/Libraries/LibJS/Parser.cpp @@ -197,6 +197,8 @@ NonnullRefPtr<Statement> Parser::parse_statement() return parse_for_statement(); case TokenType::If: return parse_if_statement(); + case TokenType::Try: + return parse_try_statement(); default: if (match_expression()) return adopt(*new ExpressionStatement(parse_expression(0))); @@ -518,6 +520,40 @@ NonnullRefPtr<VariableDeclaration> Parser::parse_variable_declaration() return create_ast_node<VariableDeclaration>(create_ast_node<Identifier>(name), move(initializer), declaration_type); } +NonnullRefPtr<TryStatement> Parser::parse_try_statement() +{ + consume(TokenType::Try); + + auto block = parse_block_statement(); + + RefPtr<CatchClause> handler; + if (match(TokenType::Catch)) + handler = parse_catch_clause(); + + RefPtr<BlockStatement> finalizer; + if (match(TokenType::Finally)) { + consume(); + finalizer = parse_block_statement(); + } + + return create_ast_node<TryStatement>(move(block), move(handler), move(finalizer)); +} + +NonnullRefPtr<CatchClause> Parser::parse_catch_clause() +{ + consume(TokenType::Catch); + + String parameter; + if (match(TokenType::ParenOpen)) { + consume(); + parameter = consume(TokenType::Identifier).value(); + consume(TokenType::ParenClose); + } + + auto body = parse_block_statement(); + return create_ast_node<CatchClause>(parameter, move(body)); +} + NonnullRefPtr<IfStatement> Parser::parse_if_statement() { consume(TokenType::If); @@ -660,7 +696,6 @@ bool Parser::match_statement() const || type == TokenType::Function || type == TokenType::Return || type == TokenType::Let - || type == TokenType::Catch || type == TokenType::Class || type == TokenType::Delete || type == TokenType::Do |