add lambda expressions

Changes

2 changed files (+14/-1)

• grammar.js
  • @@ -71,6 +71,7 @@ $.member_access_expression,
    $.element_access_expression, $.method_call_expression, $.yield_expression, + $.lambda_expression, // --- expressions that have a precedence $.postfix_expression, $.static_cast_expression,
  • @@ -145,6 +146,15 @@ ')'
    ), yield_expression: $ => seq('yield', $._expression), + + lambda_expression: $ => seq( + choice( + $.identifier, + seq('(', $.identifier, repeat(seq(',', $.identifier)), ')') + ), + '=>', + choice($._expression, $.block) + ), postfix_expression: $ => prec.left(15, seq($._expression, choice('++', '--'))), static_cast_expression: $ => prec.right(14, seq('(', choice($.type, '!'), ')', $._expression)),
  • @@ -651,12 +661,13 @@ [$.array_creation_expression,
    $.object_creation_expression, $.member_declaration_modifier], // because these all start with 'new' [$.symbol, $.member_access_expression], // disambiguate member access and static cast expressions + [$.symbol, $.member_access_expression, $.lambda_expression], // head of lambda expression may be head of symbol or MA [$.type], // disambiguate between 'X as <type *> ...' and '(X as <type>)* ...' [$.array_type], // when 'X[]? ...' could also be '(X[]) ? ...' [$._expression, $.method_call_expression], // 'X <' may be start of comparison or method call [$._expression, $.element_access_expression], // because EAEs have a prefix that is a member access [$.initializer, $.block], // because {} is ambiguous in statement-expression contexts - [$.if_statement] // because of ambiguity with if statements + [$.if_statement] // because of ambiguity with nested if statements ], extras: $ => [
• queries/highlights.scm
  • @@ -14,6 +14,7 @@ (errordomain_declaration (symbol) @type)
    (errorcode (identifier) @constant) (constant_declaration (identifier) @constant) (method_call_expression (member_access_expression (identifier) @function)) + (lambda_expression (identifier) @variable.parameter) (parameter (identifier) @variable.parameter) (property_declaration (symbol (identifier) @property)) (this_access) @variable.builtin
  • @@ -124,6 +125,7 @@ "<"
    ">" "||" "&&" + "=>" ] @operator [