obj.grammar doesn't render with the ParserGenApp

[fbartho]

2013-11-09 02:26:41.185 ParserGenApp[82193:5f0b] missing rule named: `functionDef`
2013-11-09 02:26:41.185 ParserGenApp[82193:5f0b] *** Assertion failure in -[PKSParserGenVisitor lookaheadSetForNode:], /Users/fbarthelemy/Code/parsekit/src/PKSParserGenVisitor.m:163
[snipped]

1. Run the ParserGenApp using the obj.grammar file.
2. Notice how it crashes with error missing rule named 'functionDef'
   Expected behavior: a parser would be generated.

Diff to Repro:

diff --git a/ParseKit.xcodeproj/project.pbxproj b/ParseKit.xcodeproj/project.pbxproj
index ce77a6e..4442ae0 100644
--- a/ParseKit.xcodeproj/project.pbxproj
+++ b/ParseKit.xcodeproj/project.pbxproj
@@ -7,6 +7,7 @@
    objects = {

 /* Begin PBXBuildFile section */
+       2E3956D0182E4518003E769B /* objc.grammar in Resources */ = {isa = PBXBuildFile; fileRef = D353899D0FEAC96B00926552 /* objc.grammar */; };
        D302C69D0EF044810090E714 /* TDPlistParser.m in Sources */ = {isa = PBXBuildFile; fileRef = D36568A60EEF9FE900226554 /* TDPlistParser.m */; };
        D30805BA155ECB1F0000BC60 /* PKPattern.m in Sources */ = {isa = PBXBuildFile; fileRef = D34BAF380FF9E18300D7773A /* PKPattern.m */; };
        D30805BB155ECB220000BC60 /* RegexKitLite.m in Sources */ = {isa = PBXBuildFile; fileRef = D36C55FD0FD3617B00141CB7 /* RegexKitLite.m */; };
@@ -3705,6 +3706,7 @@
                D33830A0171CA3BB00CCE513 /* PKSPredictElseIfTemplate.txt in Resources */,
                D33830A1171CA3BB00CCE513 /* PKSSpeculateElseIfTemplate.txt in Resources */,
                D33830A2171CA3BB00CCE513 /* PKSPredictElseTemplate.txt in Resources */,
+               2E3956D0182E4518003E769B /* objc.grammar in Resources */,
                D33830A3171CA3BB00CCE513 /* PKSPredictEndIfTemplate.txt in Resources */,
                D33830A4171CA3BB00CCE513 /* PKSOptionalSpeculateTemplate.txt in Resources */,
                D33830A5171CA3BB00CCE513 /* PKSOptionalPredictTemplate.txt in Resources */,
diff --git a/ParserGenApp/PGDocument.m b/ParserGenApp/PGDocument.m
index 2f9f99b..67fbe10 100644
--- a/ParserGenApp/PGDocument.m
+++ b/ParserGenApp/PGDocument.m
@@ -35,7 +35,7 @@
         self.preassemblerSettingBehavior = PKParserFactoryAssemblerSettingBehaviorNone;
         self.assemblerSettingBehavior = PKParserFactoryAssemblerSettingBehaviorAll;

-        NSString *path = [[NSBundle mainBundle] pathForResource:@"expression" ofType:@"grammar"];
+        NSString *path = [[NSBundle mainBundle] pathForResource:@"objc" ofType:@"grammar"];
         self.grammar = [NSString stringWithContentsOfFile:path encoding:NSUTF8StringEncoding error:nil];
     }
     return self;

[itod]

I think you meant the "objc.grammar"? If so, yeah... I don't think the ObjC grammar is correct or complete. It was just a half-hearted attempt that I never completed. I'd love to have an ObjC grammar for ParseKit, but I don't think one exists.

[fbartho]

I totally did mean the ObjC grammar. And I realized the grammar was entirely unfinished as I started trying to fix it. I was fooled by the large file, didn't realize that it had been started by copying in a grammar of another format.

I have a team of client engineers now, and I'd very much like something like GoFmt, or at least initially, something that will warn on style guide inconsistencies.

[fbartho]

diff --git a/res/objc.grammar b/res/objc.grammar
index 5dec845..1eb8cd3 100644
--- a/res/objc.grammar
+++ b/res/objc.grammar
@@ -42,23 +42,29 @@ classImpl = '@implementation' className (':' superclassName)? ivars? implementat

 categoryInterface = '@interface' className '(' categoryName ')' protocolRefList? interfaceDeclList? '@end';

-category-implementation:
-@implementation class-name ( category-name )
-[ implementation-definition-list ]
-@end
+//     category-implementation:
+//     @implementation class-name ( category-name )
+//     [ implementation-definition-list ]
+//     @end
+categoryImpl = '@implementation' className '(' categoryName ')' ivars? implementationDefList? '@end';

-protocol-declaration:
-@protocol protocol-name
-[ protocol-reference-list ]
-[ interface-declaration-list ]
-@end

-class-declaration-list:
-@class class-list ;
+//     protocol-declaration:
+//     @protocol protocol-name
+//     [ protocol-reference-list ]
+//     [ interface-declaration-list ]
+//     @end

-class-list:
-class-name
-class-list , class-name
+protocolDecl = '@protocol' className protocolRefList? interfaceDeclList? '@end';
+
+//     class-declaration-list:
+//     @class class-list ;
+
+classDeclList = '@class' className?;
+
+//     class-list:
+//     class-name
+//     class-list , class-name

 protocol-reference-list:
 < protocol-list >