Add script for generating grammar

Author: artyom-razinov

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "Grammar/Builder"]
+	path = Grammar/Builder
+	url = https://github.com/SwiftTools/ANTLR-Swift-Target-Builder.git

Cartfile.resolved

@@ -1,3 +1,3 @@
-github "SwiftTools/Antlr-Swift-Runtime" "v0.0.1"
-github "Quick/Nimble" "v3.2.0"
-github "Quick/Quick" "v0.9.1"
+github "SwiftTools/Antlr-Swift-Runtime" "v4.5.1.3"
+github "Quick/Nimble" "v4.0.0"
+github "Quick/Quick" "v0.9.2"

Grammar/Builder

@@ -1025,8 +1025,8 @@ prefix_operator : {SwiftSupport.isPrefixOp(_input)}? swift_operator ;
 postfix_operator : {SwiftSupport.isPostfixOp(_input)}? swift_operator ;
 
 swift_operator
-  : operator_head     ({_input.get(_input.index()-1).getType()!=WS}? operator_character)*
-  | dot_operator_head ({_input.get(_input.index()-1).getType()!=WS}? dot_operator_character)*
+  : operator_head     ({try _input.get(_input.index() - 1).getType() != SwiftParser.WS}? operator_character)*
+  | dot_operator_head ({try _input.get(_input.index() - 1).getType() != SwiftParser.WS}? dot_operator_character)*
   ;
 
 operator_character

Swift.g4 renamed to Grammar/Swift.g4

@@ -0,0 +1,53 @@
+#!/bin/bash
+
+# Setup
+
+pushd . > /dev/null
+cd `dirname $0`
+scriptRoot=`pwd`
+popd > /dev/null
+
+# Paths
+
+builder="$scriptRoot/Builder/build.sh"
+grammarName="Swift.g4"
+grammarFolder="$scriptRoot"
+bin=~/.antlrswift/bin
+src=~/.antlrswift/src
+gen=~/.antlrswift/AntlrGenerated
+target="$scriptRoot/../SwiftGrammar/Sources/Swift/"
+
+# Functions
+
+selectJar() {
+    for i in `ls "$bin" | grep "jar" | grep -v "\-tests" | grep -v "original\-"`
+    do
+        echo $i
+        return 0
+    done
+    
+    return 1
+}
+
+# Build
+
+selectJar || "$builder"  --gitFolder "$src" --installFolder "$bin"
+
+cp "$grammar" "$bin"
+
+jar="$bin/$(selectJar)"
+
+mkdir -p "$gen"
+
+pushd . > /dev/null
+
+cd "$grammarFolder"
+java -cp "$jar" org.antlr.v4.Tool -Dlanguage=Swift -o "$gen" "$grammarName"
+
+popd
+
+find "$gen" -type f ! -iname "*.swift" -delete
+
+patch "$gen/SwiftBaseListener.swift" "$scriptRoot/patch.diff"
+
+cp -R "$gen" "$target"

Grammar/generate.sh

@@ -0,0 +1,12 @@
+--- SwiftGrammar/Sources/Swift/AntlrGenerated/SwiftBaseListener2.swift	2016-04-10 22:33:10.000000000 +0300
++++ SwiftGrammar/Sources/Swift/AntlrGenerated/SwiftBaseListener.swift	2016-04-10 22:33:33.000000000 +0300
+@@ -9,6 +9,9 @@
+  * of the available methods.
+  */
+ public class SwiftBaseListener: SwiftListener {
++    public init() {
++    }
++    
+ 	/**
+ 	 * {@inheritDoc}
+ 	 *

Grammar/patch.diff

@@ -4,13 +4,14 @@ import Antlr4
 public class SwiftLexer: Lexer {
 	internal static var _decisionToDFA: [DFA] = {
           var decisionToDFA = [DFA]()
-          for i in 0..<SwiftLexer._ATN.getNumberOfDecisions() {
+          let length = SwiftLexer._ATN.getNumberOfDecisions()
+          for i in 0..<length {
           	    decisionToDFA.append(DFA(SwiftLexer._ATN.getDecisionState(i)!, i))
           }
            return decisionToDFA
      }()
 
-	internal let _sharedContextCache:PredictionContextCache = PredictionContextCache()
+	internal static let _sharedContextCache:PredictionContextCache = PredictionContextCache()
 	public static let T__0=1, T__1=2, T__2=3, T__3=4, T__4=5, T__5=6, T__6=7, 
                    T__7=8, T__8=9, T__9=10, T__10=11, T__11=12, T__12=13, 
                    T__13=14, T__14=15, T__15=16, T__16=17, T__17=18, T__18=19, 
@@ -120,18 +121,17 @@ public class SwiftLexer: Lexer {
 	 */
 	//@Deprecated
 	public let tokenNames: [String?]? = {
-	    var tokenNames = [String?]()
-
-		for i in 0..<_SYMBOLIC_NAMES.count {
+	    let length = _SYMBOLIC_NAMES.count
+	    var tokenNames = [String?](count: length, repeatedValue: nil)
+		for i in 0..<length {
 			var name = VOCABULARY.getLiteralName(i)
 			if name == nil {
 				name = VOCABULARY.getSymbolicName(i)
 			}
-
 			if name == nil {
 				name = "<INVALID>"
 			}
-			 tokenNames.append(name)
+			tokenNames[i] = name
 		}
 		return tokenNames
 	}()
@@ -141,15 +141,14 @@ public class SwiftLexer: Lexer {
 		return tokenNames
 	}
 
-
     public override func getVocabulary() -> Vocabulary {
         return SwiftLexer.VOCABULARY
     }
 
 	public override init(_ input: CharStream) {
 	    RuntimeMetaData.checkVersion("4.5.1", RuntimeMetaData.VERSION)
 		super.init(input)
-		_interp = LexerATNSimulator(self, SwiftLexer._ATN, SwiftLexer._decisionToDFA,_sharedContextCache)
+		_interp = LexerATNSimulator(self, SwiftLexer._ATN, SwiftLexer._decisionToDFA, SwiftLexer._sharedContextCache)
 	}
 
 	override
@@ -167,7 +166,7 @@ public class SwiftLexer: Lexer {
 	override
 	public func getATN() -> ATN { return SwiftLexer._ATN }
 
-    public static let _serializedATN: String = SwiftLexerATN().contents
+    public static let _serializedATN: String = SwiftLexerATN().jsonString
 	public static let _ATN: ATN = ATNDeserializer().deserializeFromJson(_serializedATN)
 
 }