Don't stack overflow on struct pointers in cycles.

[cycript.git] / Parser.ypp.in

diff --git a/Parser.ypp.in b/Parser.ypp.in
index 9866a39110710bccec44d5e8f839b7ee401c4fc9..3423e0d4819167a1db7890c6eec19d007a22d15d 100644 (file)
--- a/Parser.ypp.in
+++ b/Parser.ypp.in
@@ -27,6 +27,7 @@
 #include "Driver.hpp"
 #include "Parser.hpp"
 #include "Stack.hpp"
+#include "Syntax.hpp"
 #define CYNew new(driver.pool_)
 
 @begin ObjectiveC
@@ -72,6 +73,7 @@
 %union { CYParenthetical *parenthetical_; }
 %union { CYProperty *property_; }
 %union { CYPropertyName *propertyName_; }
+%union { CYTypeSigning signing_; }
 %union { CYSpan *span_; }
 %union { CYStatement *statement_; }
 %union { CYString *string_; }
@@ -265,7 +267,6 @@ type; })
 
 @begin E4X ObjectiveC
 %token At "@"
-%token Pound "#"
 @end
 
 %token Ampersand "&"
@@ -315,6 +316,7 @@ type; })
 %token Comma ","
 %token Question "?"
 %token SemiColon ";"
+%token Pound "#"
 %token NewLine "\n"
 %token __ ""
 
@@ -423,6 +425,7 @@ type; })
 %token _goto_ "goto"
 %token _implements_ "implements"
 %token _int_ "int"
+%token ___int128_ "__int128"
 %token _interface_ "interface"
 %token _let_ "let"
 %token _let__ "!let"
@@ -676,6 +679,7 @@ type; })
 %type <typedIdentifier_> TypeSignifier
 %type <typedIdentifier_> TypeSignifierNone
 %type <typedIdentifier_> TypeSignifierOpt
+%type <signing_> TypeSigning
 %type <modifier_> ParameterTail
 %type <modifier_> TypeQualifierLeft
 %type <modifier_> TypeQualifierLeftOpt
@@ -1013,6 +1017,7 @@ IdentifierNoOf
     : IdentifierTypeNoOf
     | "char" { $$ = CYNew CYIdentifier("char"); }
     | "int" { $$ = CYNew CYIdentifier("int"); }
+    | "__int128" { $$ = CYNew CYIdentifier("__int128"); }
     | "long" { $$ = CYNew CYIdentifier("long"); }
     | "__restrict" { $$ = CYNew CYIdentifier("__restrict"); }
     | "restrict" { $$ = CYNew CYIdentifier("restrict"); }
@@ -2104,12 +2109,17 @@ StructFieldListOpt
     | { $$ = NULL; }
     ;
 
+TypeSigning
+    : { $$ = CYTypeNeutral; }
+    | "signed" { $$ = CYTypeSigned; }
+    | "unsigned" { $$ = CYTypeUnsigned; }
+    ;
+
 PrimitiveType
     : IdentifierType[name] { $$ = CYNew CYTypeVariable($name); }
     | IntegerType[pass] { $$ = $pass; }
-    | "char" { $$ = CYNew CYTypeCharacter(CYTypeNeutral); }
-    | "signed" "char" { $$ = CYNew CYTypeCharacter(CYTypeSigned); }
-    | "unsigned" "char" { $$ = CYNew CYTypeCharacter(CYTypeUnsigned); }
+    | TypeSigning[signing] "char" { $$ = CYNew CYTypeCharacter($signing); }
+    | TypeSigning[signing] "__int128" { $$ = CYNew CYTypeInt128($signing); }
     | "struct" IdentifierType[name] { $$ = CYNew CYTypeReference($name); }
     ;
 
@@ -2135,11 +2145,13 @@ TypedIdentifierField
 TypedIdentifierEncoding
     : TypedIdentifierNo[pass] { $$ = $pass; }
     | TypeQualifierLeftOpt[modifier] "struct" "{" StructFieldListOpt[fields] "}" TypeQualifierRightOpt[typed] { if ($typed->identifier_ != NULL) CYERR($typed->location_, "unexpected identifier"); $$ = $typed; $$->specifier_ = CYNew CYTypeStruct(NULL, CYNew CYStructTail($fields)); CYSetLast($modifier) = $$->modifier_; $$->modifier_ = $modifier; }
+    | "void" TypeSignifierNone[typed] { $$ = $typed; $$->specifier_ = CYNew CYTypeVoid(); }
     ;
 
 TypedIdentifierDefinition
     : TypedIdentifierYes[pass] { $$ = $pass; }
     | TypeQualifierLeftOpt[modifier] "struct" IdentifierTypeOpt[name] "{" StructFieldListOpt[fields] "}" TypeQualifierRightOpt[typed] { if ($typed->identifier_ == NULL) CYERR($typed->location_, "expected identifier"); $$ = $typed; $$->specifier_ = CYNew CYTypeStruct($name, CYNew CYStructTail($fields)); CYSetLast($modifier) = $$->modifier_; $$->modifier_ = $modifier; }
+    | "void" TypeSignifier[typed] { $$ = $typed; $$->specifier_ = CYNew CYTypeVoid(); }
     ;
 
 PrimaryExpression
@@ -2422,7 +2434,7 @@ IdentifierNoOf
     ;
 
 ExternCStatement
-    : TypedIdentifierField[typed] TerminatorHard { $$ = CYNew CYExternal(CYNew CYString("C"), $typed); }
+    : TypedIdentifierField[typed] TerminatorHard { $$ = CYNew CYExternalDefinition(CYNew CYString("C"), $typed); }
     | TypeDefinition[pass] { $$ = $pass; }
     ;
 
@@ -2436,8 +2448,16 @@ ExternC
     | ExternCStatement[pass] { $$ = $pass; }
     ;
 
+ABI
+    : StringLiteral[abi] { if (strcmp($abi->Value(), "C") != 0) CYERR(@abi, "unknown extern binding"); }
+    ;
+
 Statement__
-    : "extern" NewLineNot StringLiteral[abi] { if (strcmp($abi->Value(), "C") != 0) CYERR(@abi, "unknown extern binding"); } ExternC[pass] { $$ = $pass; }
+    : "extern" NewLineNot ABI[abi] ExternC[pass] { $$ = $pass; }
+    ;
+
+PrimaryExpression
+    : "(" LexOf "extern" NewLineOpt ABI[abi] TypedIdentifierField[typed] ")" { $$ = CYNew CYExternalExpression(CYNew CYString("C"), $typed); }
     ;
 /* }}} */
 @end