Move TypedIdentifier assertions to separate rules.

[cycript.git] / Parser.ypp.in

diff --git a/Parser.ypp.in b/Parser.ypp.in
index aeafb3586a4e33be1d5a364739cc43a5c2d2f8b5..687218ae7144db28665d5d0d783cc5b7e9b77321 100644 (file)
--- a/Parser.ypp.in
+++ b/Parser.ypp.in
@@ -304,6 +304,7 @@ type; })
 %token Question "?"
 %token SemiColon ";"
 %token NewLine "\n"
+%token __ ""
 
 %token Comment
 
@@ -439,7 +440,6 @@ type; })
 %token _SEL_ "SEL"
 @end
 
-%token _auto_ "auto"
 %token _each_ "each"
 %token _of_ "of"
 %token _of__ "!of"
@@ -450,7 +450,7 @@ type; })
 @end
 
 %token AutoComplete
-%token YieldStar
+%token YieldStar "yield *"
 
 %token <identifier_> Identifier_
 %token <number_> NumericLiteral
@@ -630,7 +630,9 @@ type; })
 %type <typedIdentifier_> TypeSignifier
 %type <modifier_> TypeQualifierLeft
 %type <typedIdentifier_> TypeQualifierRight
-%type <typedIdentifier_> TypedIdentifier
+%type <typedIdentifier_> TypedIdentifierMaybe
+%type <typedIdentifier_> TypedIdentifierNo
+%type <typedIdentifier_> TypedIdentifierYes
 %type <typedParameter_> TypedParameterList_
 %type <typedParameter_> TypedParameterList
 %type <typedParameter_> TypedParameterListOpt
@@ -720,10 +722,14 @@ LexPushYieldOn: { driver.yield_.push(true); };
 LexPushYieldOff: { driver.yield_.push(false); };
 LexPopYield: { driver.yield_.pop(); };
 
-LexNewLine
+LexNewLineOrOpt
     : { CYLEX(); if (driver.hold_ != empty_symbol) CYERR(@$, "unexpected hold"); if (driver.newline_) { driver.hold_ = yyla.type; yyla.type = yytranslate_(cy::parser::token::NewLine); } }
     ;
 
+LexNewLineOrNot
+    : { CYLEX(); if (driver.hold_ != empty_symbol) CYERR(@$, "unexpected hold"); driver.hold_ = yyla.type; yyla.type = yytranslate_(driver.newline_ ? cy::parser::token::NewLine : cy::parser::token::__); }
+    ;
+
 LexNoStar
     : { CYMAP(YieldStar, Star); }
     ;
@@ -760,7 +766,6 @@ IdentifierName
 
 Word
     : IdentifierNoOf[pass] { $$ = $pass; }
-    | "auto" { $$ = CYNew CYWord("auto"); }
     | "break" { $$ = CYNew CYWord("break"); }
     | "case" { $$ = CYNew CYWord("case"); }
     | "catch" { $$ = CYNew CYWord("catch"); }
@@ -834,9 +839,18 @@ StrictSemi
     : { driver.Warning(@$, "warning, automatic semi-colon insertion required"); }
     ;
 
+NewLineNot
+    : LexNewLineOrNot ""
+    ;
+
+NewLineOpt
+    : LexNewLineOrNot "\n"
+    | NewLineNot
+    ;
+
 TerminatorSoft
-    : ";"
-    | "\n" StrictSemi
+    : LexNewLineOrNot "\n" StrictSemi
+    | NewLineNot LexOf Terminator
     ;
 
 Terminator
@@ -926,9 +940,7 @@ IdentifierNoOf
     | "static" { $$ = CYNew CYIdentifier("static"); }
     | "volatile" { $$ = CYNew CYIdentifier("volatile"); }
 @begin C
-    | "extern" { $$ = CYNew CYIdentifier("extern"); }
     | "signed" { $$ = CYNew CYIdentifier("signed"); }
-    | "typedef" { $$ = CYNew CYIdentifier("typedef"); }
     | "unsigned" { $$ = CYNew CYIdentifier("unsigned"); }
 @end
 @begin ObjectiveC
@@ -1049,12 +1061,12 @@ InitializerOpt
 /* 12.2.9 Template Literals {{{ */
 TemplateLiteral
     : NoSubstitutionTemplate[string] { $$ = CYNew CYTemplate($string, NULL); }
-    | TemplateHead[string] TemplateSpans[spans] { $$ = CYNew CYTemplate($string, $spans); }
+    | TemplateHead[string] LexPushInOff TemplateSpans[spans] { $$ = CYNew CYTemplate($string, $spans); }
     ;
 
 TemplateSpans
     : Expression[value] TemplateMiddle[string] TemplateSpans[spans] { $$ = CYNew CYSpan($value, $string, $spans); }
-    | Expression[value] TemplateTail[string] { $$ = CYNew CYSpan($value, $string, NULL); }
+    | Expression[value] TemplateTail[string] LexPopIn { $$ = CYNew CYSpan($value, $string, NULL); }
     ;
 /* }}} */
 
@@ -1132,15 +1144,15 @@ AccessExpression
     ;
 
 LeftHandSideExpression
-    : AccessExpression[pass] LexNewLine { $$ = $pass; }
+    : AccessExpression[pass] LexNewLineOrOpt { $$ = $pass; }
     | IndirectExpression[pass] { $$ = $pass; }
     ;
 /* }}} */
 /* 12.4 Postfix Expressions {{{ */
 PostfixExpression
-    : AccessExpression[lhs] LexNewLine { $$ = $lhs; }
-    | AccessExpression[lhs] LexNewLine "++" { $$ = CYNew CYPostIncrement($lhs); }
-    | AccessExpression[lhs] LexNewLine "--" { $$ = CYNew CYPostDecrement($lhs); }
+    : AccessExpression[lhs] LexNewLineOrOpt { $$ = $lhs; }
+    | AccessExpression[lhs] LexNewLineOrOpt "++" { $$ = CYNew CYPostIncrement($lhs); }
+    | AccessExpression[lhs] LexNewLineOrOpt "--" { $$ = CYNew CYPostDecrement($lhs); }
     ;
 /* }}} */
 /* 12.5 Unary Operators {{{ */
@@ -1527,7 +1539,7 @@ ForStatementInitializer
     ;
 
 ForInStatementInitializer
-    : LexLet LexOf AccessExpression[pass] LexNewLine { $$ = $pass; }
+    : LexLet LexOf AccessExpression[pass] LexNewLineOrOpt { $$ = $pass; }
     | LexLet LexOf IndirectExpression[pass] { $$ = $pass; }
     | LexLet LexOf Var_ LexBind ForBinding[binding] { $$ = CYNew CYForVariable($binding); }
     | ForDeclaration[pass] { $$ = $pass; }
@@ -1544,14 +1556,14 @@ ForBinding
 /* }}} */
 /* 13.8 The continue Statement {{{ */
 ContinueStatement
-    : "continue" LexNewLine TerminatorSoft { $$ = CYNew CYContinue(NULL); }
-    | "continue" LexNewLine Identifier[label] Terminator { $$ = CYNew CYContinue($label); }
+    : "continue" TerminatorSoft { $$ = CYNew CYContinue(NULL); }
+    | "continue" NewLineNot LexOf Identifier[label] Terminator { $$ = CYNew CYContinue($label); }
     ;
 /* }}} */
 /* 13.9 The break Statement {{{ */
 BreakStatement
-    : "break" LexNewLine TerminatorSoft { $$ = CYNew CYBreak(NULL); }
-    | "break" LexNewLine Identifier[label] Terminator { $$ = CYNew CYBreak($label); }
+    : "break" TerminatorSoft { $$ = CYNew CYBreak(NULL); }
+    | "break" NewLineNot LexOf Identifier[label] Terminator { $$ = CYNew CYBreak($label); }
     ;
 /* }}} */
 /* 13.10 The return Statement {{{ */
@@ -1560,8 +1572,8 @@ Return
     ;
 
 ReturnStatement
-    : Return LexNewLine LexOf TerminatorSoft { $$ = CYNew CYReturn(NULL); }
-    | Return LexNewLine Expression[value] Terminator { $$ = CYNew CYReturn($value); }
+    : Return TerminatorSoft { $$ = CYNew CYReturn(NULL); }
+    | Return NewLineNot Expression[value] Terminator { $$ = CYNew CYReturn($value); }
     ;
 /* }}} */
 /* 13.11 The with Statement {{{ */
@@ -1605,8 +1617,8 @@ LabelledItem
 /* }}} */
 /* 13.14 The throw Statement {{{ */
 ThrowStatement
-    : "throw"[throw] LexNewLine LexOf TerminatorSoft { CYERR(@throw, "throw without exception"); }
-    | "throw" LexNewLine Expression[value] Terminator { $$ = CYNew cy::Syntax::Throw($value); }
+    : "throw"[throw] TerminatorSoft { CYERR(@throw, "throw without exception"); }
+    | "throw" NewLineNot Expression[value] Terminator { $$ = CYNew cy::Syntax::Throw($value); }
     ;
 /* }}} */
 /* 13.15 The try Statement {{{ */
@@ -1681,7 +1693,7 @@ FunctionStatementList
 /* }}} */
 /* 14.2 Arrow Function Definitions {{{ */
 ArrowFunction
-    : ArrowParameters[parameters] LexNewLine "=>" LexNoBrace ConciseBody[code] { $$ = CYNew CYFatArrow($parameters, $code); }
+    : ArrowParameters[parameters] LexNewLineOrOpt "=>" LexNoBrace ConciseBody[code] { $$ = CYNew CYFatArrow($parameters, $code); }
     ;
 
 ArrowParameters
@@ -1723,15 +1735,11 @@ GeneratorBody
     : LexPushYieldOn FunctionStatementList[code] LexPopYield { $$ = $code; }
     ;
 
-Yield
-    : "!yield" LexNewLine LexNoStar
-    ;
-
 YieldExpression
-    : Yield LexOf { CYNOT(@$); /* $$ = CYNew CYYieldValue(NULL); */ }
-    | Yield LexOf "\n" { CYNOT(@$); /* $$ = CYNew CYYieldValue(NULL); */ }
-    | Yield AssignmentExpression[value] { CYNOT(@$); /* $$ = CYNew CYYieldValue($value); */ }
-    | Yield LexOf YieldStar AssignmentExpression[generator] { CYNOT(@$); /* $$ = CYNew CYYieldGenerator($generator); */ }
+    : "!yield" LexNewLineOrNot "\n" LexOf { CYNOT(@$); /* $$ = CYNew CYYieldValue(NULL); */ }
+    | "!yield" LexNewLineOrNot "" LexNoStar LexOf { CYNOT(@$); /* $$ = CYNew CYYieldValue(NULL); */ }
+    | "!yield" LexNewLineOrNot "" LexNoStar AssignmentExpression[value] { CYNOT(@$); /* $$ = CYNew CYYieldValue($value); */ }
+    | "!yield" LexNewLineOrNot "" LexNoStar LexOf "yield *" AssignmentExpression[generator] { CYNOT(@$); /* $$ = CYNew CYYieldGenerator($generator); */ }
     ;
 /* }}} */
 /* 14.5 Class Definitions {{{ */
@@ -1976,12 +1984,20 @@ PrimitiveType
     | "unsigned" "char" { $$ = CYNew CYTypeUnsigned(CYNew CYTypeVariable("char")); }
     ;
 
-TypedIdentifier
+TypedIdentifierMaybe
     : TypeQualifierLeft[modifier] PrimitiveType[specifier] TypeQualifierRight[typed] { $$ = $typed; $$->specifier_ = $specifier; CYSetLast($modifier) = $$->modifier_; $$->modifier_ = $modifier; }
     ;
 
+TypedIdentifierYes
+    : TypedIdentifierMaybe[typed] { if ($typed->identifier_ == NULL) CYERR($typed->location_, "expected identifier"); $$ = $typed; }
+    ;
+
+TypedIdentifierNo
+    : TypedIdentifierMaybe[typed] { if ($typed->identifier_ != NULL) CYERR($typed->location_, "unexpected identifier"); $$ = $typed; }
+    ;
+
 PrimaryExpression
-    : "@encode" "(" TypedIdentifier[typed] ")" { $$ = CYNew CYEncodedType($typed); }
+    : "@encode" "(" TypedIdentifierMaybe[typed] ")" { $$ = CYNew CYEncodedType($typed); }
     ;
 /* }}} */
 @end
@@ -1995,7 +2011,7 @@ ClassSuperOpt
     ;
 
 ImplementationFieldListOpt
-    : TypedIdentifier[typed] ";" ImplementationFieldListOpt[next] { $$ = CYNew CYImplementationField($typed, $next); }
+    : TypedIdentifierMaybe[typed] ";" ImplementationFieldListOpt[next] { $$ = CYNew CYImplementationField($typed, $next); }
     | { $$ = NULL; }
     ;
 
@@ -2009,7 +2025,7 @@ MessageScope
     ;
 
 TypeOpt
-    : "(" TypedIdentifier[type] ")" { if ($type->identifier_ != NULL) CYERR($type->location_, "unexpected identifier"); $$ = $type; }
+    : "(" TypedIdentifierNo[type] ")" { $$ = $type; }
     | { $$ = CYNew CYTypedIdentifier(CYNew CYTypeVariable("id")); }
     ;
 
@@ -2159,7 +2175,7 @@ PrimaryExpression
 /* }}} */
 /* Cycript (Objective-C): Block Expressions {{{ */
 PrimaryExpression
-    : "^" TypedIdentifier[type] { if ($type->identifier_ != NULL) CYERR($type->location_, "unexpected identifier"); } "{" FunctionBody[code] "}" { if (CYTypeFunctionWith *function = $type->Function()) $$ = CYNew CYObjCBlock($type, function->parameters_, $code); else CYERR($type->location_, "expected parameters"); }
+    : "^" TypedIdentifierNo[type] "{" FunctionBody[code] "}" { if (CYTypeFunctionWith *function = $type->Function()) $$ = CYNew CYObjCBlock($type, function->parameters_, $code); else CYERR($type->location_, "expected parameters"); }
     ;
 /* }}} */
 /* Cycript (Objective-C): Instance Literals {{{ */
@@ -2189,11 +2205,6 @@ MemberAccess
     | "->" AutoComplete { driver.mode_ = CYDriver::AutoIndirect; YYACCEPT; }
     ;
 /* }}} */
-/* Cycript (C): auto Compatibility {{{ */
-Var_
-    : "auto"
-    ;
-/* }}} */
 /* Cycript (C): Lambda Expressions {{{ */
 TypedParameterList_
     : "," TypedParameterList[parameters] { $$ = $parameters; }
@@ -2201,7 +2212,7 @@ TypedParameterList_
     ;
 
 TypedParameterList
-    : TypedIdentifier[typed] TypedParameterList_[next] { $$ = CYNew CYTypedParameter($typed, $next); }
+    : TypedIdentifierMaybe[typed] TypedParameterList_[next] { $$ = CYNew CYTypedParameter($typed, $next); }
     ;
 
 TypedParameterListOpt
@@ -2210,17 +2221,29 @@ TypedParameterListOpt
     ;
 
 PrimaryExpression
-    : "[" LexOf "&" "]" "(" TypedParameterListOpt[parameters] ")" "->" TypedIdentifier[type] "{" FunctionBody[code] "}" { $$ = CYNew CYLambda($type, $parameters, $code); }
+    : "[" LexOf "&" "]" "(" TypedParameterListOpt[parameters] ")" "->" TypedIdentifierMaybe[type] "{" FunctionBody[code] "}" { $$ = CYNew CYLambda($type, $parameters, $code); }
     ;
 /* }}} */
 /* Cycript (C): Type Definitions {{{ */
+IdentifierNoOf
+    : "typedef" NewLineOpt { $$ = CYNew CYIdentifier("typedef"); }
+    ;
+
 Statement__
-    : "typedef" TypedIdentifier[typed] { if ($typed->identifier_ == NULL) CYERR($typed->location_, "expected identifier"); } Terminator { $$ = CYNew CYTypeDefinition($typed); }
+    : "typedef" NewLineNot TypedIdentifierYes[typed] Terminator { $$ = CYNew CYTypeDefinition($typed); }
+    ;
+
+PrimaryExpression
+    : "(" LexOf "typedef" NewLineOpt TypedIdentifierNo[typed] ")" { $$ = CYNew CYTypeExpression($typed); }
     ;
 /* }}} */
 /* Cycript (C): extern "C" {{{ */
+IdentifierNoOf
+    : "extern" NewLineOpt { $$ = CYNew CYIdentifier("extern"); }
+    ;
+
 Statement__
-    : "extern" StringLiteral[abi] { if (strcmp($abi->Value(), "C") != 0) CYERR(@abi, "unknown extern binding"); } TypedIdentifier[typed] { if ($typed->identifier_ == NULL) CYERR($typed->location_, "expected identifier"); } Terminator { $$ = CYNew CYExternal($abi, $typed); }
+    : "extern" NewLineNot StringLiteral[abi] { if (strcmp($abi->Value(), "C") != 0) CYERR(@abi, "unknown extern binding"); } TypedIdentifierYes[typed] Terminator { $$ = CYNew CYExternal($abi, $typed); }
     ;
 /* }}} */
 
@@ -2483,7 +2506,7 @@ PrimaryExpression
     ;
 
 PostfixExpression
-    : PostfixExpression[lhs] RubyProcExpression[rhs] LexNewLine { $$ = CYNew CYRubyBlock($lhs, $rhs); }
+    : PostfixExpression[lhs] RubyProcExpression[rhs] LexNewLineOrOpt { $$ = CYNew CYRubyBlock($lhs, $rhs); }
     ;
 /* }}} */