Merge pull request #864 from herby/parser-fix

Parser fix

js/Compiler-Tests.js

@@ -512,6 +512,27 @@ referencedClasses: []
 }),
 globals.CodeGeneratorTest);
 
+smalltalk.addMethod(
+smalltalk.method({
+selector: "testDynamicDictionaryWithMoreArrows",
+protocol: 'tests',
+fn: function (){
+var self=this;
+function $HashedCollection(){return globals.HashedCollection||(typeof HashedCollection=="undefined"?nil:HashedCollection)}
+return smalltalk.withContext(function($ctx1) { 
+var $2,$1;
+$2=_st((1).__minus_gt((2))).__minus_gt((3));
+$ctx1.sendIdx["->"]=1;
+$1=_st($HashedCollection())._with_($2);
+self._should_return_("foo ^ #{1->2->3}",$1);
+return self}, function($ctx1) {$ctx1.fill(self,"testDynamicDictionaryWithMoreArrows",{},globals.CodeGeneratorTest)})},
+args: [],
+source: "testDynamicDictionaryWithMoreArrows\x0a\x09self should: 'foo ^ #{1->2->3}' return: (HashedCollection with: 1->2->3)",
+messageSends: ["should:return:", "with:", "->"],
+referencedClasses: ["HashedCollection"]
+}),
+globals.CodeGeneratorTest);
+
 smalltalk.addMethod(
 smalltalk.method({
 selector: "testGlobalVar",

st/Compiler-Tests.st

@@ -203,6 +203,10 @@ testDynamicDictionaryElementsOrdered
 ' return: #{'foo'->1. 'bar'->2}.
 !
 
+testDynamicDictionaryWithMoreArrows
+	self should: 'foo ^ #{1->2->3}' return: (HashedCollection with: 1->2->3)
+!
+
 testGlobalVar
 	self should: 'foo ^ eval class' return: BlockClosure.
 	self should: 'foo ^ Math cos: 0' return: 1.

support/parser.js

@@ -317,10 +317,8 @@ globals.SmalltalkParser = (function() {
                                      ._arguments_(pattern[1])
                                      ._nodes_([sequence]);
                          },
-        peg$c136 = "->",
-        peg$c137 = { type: "literal", value: "->", description: "\"->\"" },
-        peg$c138 = function(message, tail) { return tail._valueForReceiver_(message); },
-        peg$c139 = function(receiver, tail) { return tail._valueForReceiver_(receiver); },
+        peg$c136 = function(send) { return send._selector() === "->" },
+        peg$c137 = function(send) { return send; },
 
         peg$currPos          = 0,
         peg$reportedPos      = 0,
@@ -492,7 +490,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsestart() {
       var s0;
 
-      var key    = peg$currPos * 61 + 0,
+      var key    = peg$currPos * 59 + 0,
           cached = peg$cache[key];
 
       if (cached) {
@@ -510,7 +508,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseseparator() {
       var s0, s1;
 
-      var key    = peg$currPos * 61 + 1,
+      var key    = peg$currPos * 59 + 1,
           cached = peg$cache[key];
 
       if (cached) {
@@ -549,7 +547,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsecomments() {
       var s0, s1, s2, s3, s4;
 
-      var key    = peg$currPos * 61 + 2,
+      var key    = peg$currPos * 59 + 2,
           cached = peg$cache[key];
 
       if (cached) {
@@ -674,7 +672,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsews() {
       var s0, s1;
 
-      var key    = peg$currPos * 61 + 3,
+      var key    = peg$currPos * 59 + 3,
           cached = peg$cache[key];
 
       if (cached) {
@@ -703,7 +701,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseidentifier() {
       var s0, s1, s2, s3;
 
-      var key    = peg$currPos * 61 + 4,
+      var key    = peg$currPos * 59 + 4,
           cached = peg$cache[key];
 
       if (cached) {
@@ -759,7 +757,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsekeyword() {
       var s0, s1, s2;
 
-      var key    = peg$currPos * 61 + 5,
+      var key    = peg$currPos * 59 + 5,
           cached = peg$cache[key];
 
       if (cached) {
@@ -798,7 +796,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseselector() {
       var s0, s1, s2, s3;
 
-      var key    = peg$currPos * 61 + 6,
+      var key    = peg$currPos * 59 + 6,
           cached = peg$cache[key];
 
       if (cached) {
@@ -854,7 +852,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseclassName() {
       var s0, s1, s2, s3;
 
-      var key    = peg$currPos * 61 + 7,
+      var key    = peg$currPos * 59 + 7,
           cached = peg$cache[key];
 
       if (cached) {
@@ -910,7 +908,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsestring() {
       var s0, s1, s2, s3, s4;
 
-      var key    = peg$currPos * 61 + 8,
+      var key    = peg$currPos * 59 + 8,
           cached = peg$cache[key];
 
       if (cached) {
@@ -1008,7 +1006,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsesymbol() {
       var s0, s1, s2;
 
-      var key    = peg$currPos * 61 + 9,
+      var key    = peg$currPos * 59 + 9,
           cached = peg$cache[key];
 
       if (cached) {
@@ -1047,7 +1045,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsebareSymbol() {
       var s0, s1, s2;
 
-      var key    = peg$currPos * 61 + 10,
+      var key    = peg$currPos * 59 + 10,
           cached = peg$cache[key];
 
       if (cached) {
@@ -1083,7 +1081,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsenumber() {
       var s0, s1;
 
-      var key    = peg$currPos * 61 + 11,
+      var key    = peg$currPos * 59 + 11,
           cached = peg$cache[key];
 
       if (cached) {
@@ -1116,7 +1114,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsenumberExp() {
       var s0, s1, s2, s3, s4;
 
-      var key    = peg$currPos * 61 + 12,
+      var key    = peg$currPos * 59 + 12,
           cached = peg$cache[key];
 
       if (cached) {
@@ -1169,7 +1167,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsehex() {
       var s0, s1, s2, s3, s4;
 
-      var key    = peg$currPos * 61 + 13,
+      var key    = peg$currPos * 59 + 13,
           cached = peg$cache[key];
 
       if (cached) {
@@ -1244,7 +1242,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsefloat() {
       var s0, s1, s2, s3, s4, s5;
 
-      var key    = peg$currPos * 61 + 14,
+      var key    = peg$currPos * 59 + 14,
           cached = peg$cache[key];
 
       if (cached) {
@@ -1346,7 +1344,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseinteger() {
       var s0, s1, s2, s3;
 
-      var key    = peg$currPos * 61 + 15,
+      var key    = peg$currPos * 59 + 15,
           cached = peg$cache[key];
 
       if (cached) {
@@ -1409,7 +1407,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseliteralArray() {
       var s0, s1, s2;
 
-      var key    = peg$currPos * 61 + 16,
+      var key    = peg$currPos * 59 + 16,
           cached = peg$cache[key];
 
       if (cached) {
@@ -1448,7 +1446,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsebareLiteralArray() {
       var s0, s1, s2;
 
-      var key    = peg$currPos * 61 + 17,
+      var key    = peg$currPos * 59 + 17,
           cached = peg$cache[key];
 
       if (cached) {
@@ -1487,7 +1485,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseliteralArrayRest() {
       var s0, s1, s2, s3, s4, s5;
 
-      var key    = peg$currPos * 61 + 18,
+      var key    = peg$currPos * 59 + 18,
           cached = peg$cache[key];
 
       if (cached) {
@@ -1585,7 +1583,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsedynamicArray() {
       var s0, s1, s2, s3, s4, s5, s6;
 
-      var key    = peg$currPos * 61 + 19,
+      var key    = peg$currPos * 59 + 19,
           cached = peg$cache[key];
 
       if (cached) {
@@ -1666,7 +1664,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsedynamicDictionary() {
       var s0, s1, s2, s3, s4, s5;
 
-      var key    = peg$currPos * 61 + 20,
+      var key    = peg$currPos * 59 + 20,
           cached = peg$cache[key];
 
       if (cached) {
@@ -1732,7 +1730,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsepseudoVariable() {
       var s0, s1, s2;
 
-      var key    = peg$currPos * 61 + 21,
+      var key    = peg$currPos * 59 + 21,
           cached = peg$cache[key];
 
       if (cached) {
@@ -1798,7 +1796,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseparseTimeLiteral() {
       var s0;
 
-      var key    = peg$currPos * 61 + 22,
+      var key    = peg$currPos * 59 + 22,
           cached = peg$cache[key];
 
       if (cached) {
@@ -1828,7 +1826,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseruntimeLiteral() {
       var s0;
 
-      var key    = peg$currPos * 61 + 23,
+      var key    = peg$currPos * 59 + 23,
           cached = peg$cache[key];
 
       if (cached) {
@@ -1852,7 +1850,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseliteral() {
       var s0;
 
-      var key    = peg$currPos * 61 + 24,
+      var key    = peg$currPos * 59 + 24,
           cached = peg$cache[key];
 
       if (cached) {
@@ -1873,7 +1871,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsevariable() {
       var s0, s1;
 
-      var key    = peg$currPos * 61 + 25,
+      var key    = peg$currPos * 59 + 25,
           cached = peg$cache[key];
 
       if (cached) {
@@ -1897,7 +1895,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsekeywordPair() {
       var s0, s1, s2, s3, s4;
 
-      var key    = peg$currPos * 61 + 26,
+      var key    = peg$currPos * 59 + 26,
           cached = peg$cache[key];
 
       if (cached) {
@@ -1942,7 +1940,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsebinarySelector() {
       var s0, s1, s2;
 
-      var key    = peg$currPos * 61 + 27,
+      var key    = peg$currPos * 59 + 27,
           cached = peg$cache[key];
 
       if (cached) {
@@ -1987,7 +1985,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsekeywordPattern() {
       var s0, s1, s2, s3, s4, s5, s6;
 
-      var key    = peg$currPos * 61 + 28,
+      var key    = peg$currPos * 59 + 28,
           cached = peg$cache[key];
 
       if (cached) {
@@ -2074,7 +2072,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsebinaryPattern() {
       var s0, s1, s2, s3, s4;
 
-      var key    = peg$currPos * 61 + 29,
+      var key    = peg$currPos * 59 + 29,
           cached = peg$cache[key];
 
       if (cached) {
@@ -2119,7 +2117,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseunaryPattern() {
       var s0, s1, s2;
 
-      var key    = peg$currPos * 61 + 30,
+      var key    = peg$currPos * 59 + 30,
           cached = peg$cache[key];
 
       if (cached) {
@@ -2152,7 +2150,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseexpression() {
       var s0;
 
-      var key    = peg$currPos * 61 + 31,
+      var key    = peg$currPos * 59 + 31,
           cached = peg$cache[key];
 
       if (cached) {
@@ -2179,7 +2177,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseexpressionList() {
       var s0, s1, s2, s3, s4;
 
-      var key    = peg$currPos * 61 + 32,
+      var key    = peg$currPos * 59 + 32,
           cached = peg$cache[key];
 
       if (cached) {
@@ -2230,7 +2228,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseexpressions() {
       var s0, s1, s2, s3;
 
-      var key    = peg$currPos * 61 + 33,
+      var key    = peg$currPos * 59 + 33,
           cached = peg$cache[key];
 
       if (cached) {
@@ -2268,7 +2266,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseassignment() {
       var s0, s1, s2, s3, s4, s5;
 
-      var key    = peg$currPos * 61 + 34,
+      var key    = peg$currPos * 59 + 34,
           cached = peg$cache[key];
 
       if (cached) {
@@ -2325,7 +2323,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseret() {
       var s0, s1, s2, s3, s4, s5;
 
-      var key    = peg$currPos * 61 + 35,
+      var key    = peg$currPos * 59 + 35,
           cached = peg$cache[key];
 
       if (cached) {
@@ -2391,7 +2389,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsetemps() {
       var s0, s1, s2, s3, s4, s5, s6;
 
-      var key    = peg$currPos * 61 + 36,
+      var key    = peg$currPos * 59 + 36,
           cached = peg$cache[key];
 
       if (cached) {
@@ -2489,7 +2487,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseblockParamList() {
       var s0, s1, s2, s3, s4, s5, s6;
 
-      var key    = peg$currPos * 61 + 37,
+      var key    = peg$currPos * 59 + 37,
           cached = peg$cache[key];
 
       if (cached) {
@@ -2609,7 +2607,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsesubexpression() {
       var s0, s1, s2, s3, s4, s5;
 
-      var key    = peg$currPos * 61 + 38,
+      var key    = peg$currPos * 59 + 38,
           cached = peg$cache[key];
 
       if (cached) {
@@ -2672,7 +2670,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsestatements() {
       var s0, s1, s2, s3, s4, s5, s6, s7;
 
-      var key    = peg$currPos * 61 + 39,
+      var key    = peg$currPos * 59 + 39,
           cached = peg$cache[key];
 
       if (cached) {
@@ -2840,7 +2838,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsesequence() {
       var s0;
 
-      var key    = peg$currPos * 61 + 40,
+      var key    = peg$currPos * 59 + 40,
           cached = peg$cache[key];
 
       if (cached) {
@@ -2861,7 +2859,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsestSequence() {
       var s0, s1, s2, s3, s4;
 
-      var key    = peg$currPos * 61 + 41,
+      var key    = peg$currPos * 59 + 41,
           cached = peg$cache[key];
 
       if (cached) {
@@ -2912,7 +2910,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseblock() {
       var s0, s1, s2, s3, s4, s5, s6, s7;
 
-      var key    = peg$currPos * 61 + 42,
+      var key    = peg$currPos * 59 + 42,
           cached = peg$cache[key];
 
       if (cached) {
@@ -2993,7 +2991,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseoperand() {
       var s0;
 
-      var key    = peg$currPos * 61 + 43,
+      var key    = peg$currPos * 59 + 43,
           cached = peg$cache[key];
 
       if (cached) {
@@ -3017,7 +3015,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseunaryMessage() {
       var s0, s1, s2, s3, s4;
 
-      var key    = peg$currPos * 61 + 44,
+      var key    = peg$currPos * 59 + 44,
           cached = peg$cache[key];
 
       if (cached) {
@@ -3071,7 +3069,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseunaryTail() {
       var s0, s1, s2, s3, s4;
 
-      var key    = peg$currPos * 61 + 45,
+      var key    = peg$currPos * 59 + 45,
           cached = peg$cache[key];
 
       if (cached) {
@@ -3119,7 +3117,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseunarySend() {
       var s0, s1, s2, s3;
 
-      var key    = peg$currPos * 61 + 46,
+      var key    = peg$currPos * 59 + 46,
           cached = peg$cache[key];
 
       if (cached) {
@@ -3161,7 +3159,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsebinaryMessage() {
       var s0, s1, s2, s3, s4;
 
-      var key    = peg$currPos * 61 + 47,
+      var key    = peg$currPos * 59 + 47,
           cached = peg$cache[key];
 
       if (cached) {
@@ -3209,7 +3207,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsebinaryTail() {
       var s0, s1, s2;
 
-      var key    = peg$currPos * 61 + 48,
+      var key    = peg$currPos * 59 + 48,
           cached = peg$cache[key];
 
       if (cached) {
@@ -3245,7 +3243,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsebinarySend() {
       var s0, s1, s2;
 
-      var key    = peg$currPos * 61 + 49,
+      var key    = peg$currPos * 59 + 49,
           cached = peg$cache[key];
 
       if (cached) {
@@ -3281,7 +3279,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsekeywordMessage() {
       var s0, s1, s2, s3, s4, s5;
 
-      var key    = peg$currPos * 61 + 50,
+      var key    = peg$currPos * 59 + 50,
           cached = peg$cache[key];
 
       if (cached) {
@@ -3353,7 +3351,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsekeywordSend() {
       var s0, s1, s2;
 
-      var key    = peg$currPos * 61 + 51,
+      var key    = peg$currPos * 59 + 51,
           cached = peg$cache[key];
 
       if (cached) {
@@ -3386,7 +3384,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsemessage() {
       var s0;
 
-      var key    = peg$currPos * 61 + 52,
+      var key    = peg$currPos * 59 + 52,
           cached = peg$cache[key];
 
       if (cached) {
@@ -3410,7 +3408,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsecascade() {
       var s0, s1, s2, s3, s4, s5, s6, s7, s8, s9;
 
-      var key    = peg$currPos * 61 + 53,
+      var key    = peg$currPos * 59 + 53,
           cached = peg$cache[key];
 
       if (cached) {
@@ -3539,7 +3537,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsejsStatement() {
       var s0, s1, s2, s3, s4;
 
-      var key    = peg$currPos * 61 + 54,
+      var key    = peg$currPos * 59 + 54,
           cached = peg$cache[key];
 
       if (cached) {
@@ -3637,7 +3635,7 @@ globals.SmalltalkParser = (function() {
     function peg$parsemethod() {
       var s0, s1, s2, s3, s4, s5;
 
-      var key    = peg$currPos * 61 + 55,
+      var key    = peg$currPos * 59 + 55,
           cached = peg$cache[key];
 
       if (cached) {
@@ -3694,100 +3692,10 @@ globals.SmalltalkParser = (function() {
       return s0;
     }
 
-    function peg$parseassociationMessage() {
-      var s0, s1, s2, s3, s4;
-
-      var key    = peg$currPos * 61 + 56,
-          cached = peg$cache[key];
-
-      if (cached) {
-        peg$currPos = cached.nextPos;
-        return cached.result;
-      }
-
-      s0 = peg$currPos;
-      s1 = peg$parsews();
-      if (s1 !== peg$FAILED) {
-        if (input.substr(peg$currPos, 2) === peg$c136) {
-          s2 = peg$c136;
-          peg$currPos += 2;
-        } else {
-          s2 = peg$FAILED;
-          if (peg$silentFails === 0) { peg$fail(peg$c137); }
-        }
-        if (s2 !== peg$FAILED) {
-          s3 = peg$parsews();
-          if (s3 !== peg$FAILED) {
-            s4 = peg$parseunarySend();
-            if (s4 === peg$FAILED) {
-              s4 = peg$parseoperand();
-            }
-            if (s4 !== peg$FAILED) {
-              peg$reportedPos = s0;
-              s1 = peg$c116(s2, s4);
-              s0 = s1;
-            } else {
-              peg$currPos = s0;
-              s0 = peg$c1;
-            }
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c1;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c1;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c1;
-      }
-
-      peg$cache[key] = { nextPos: peg$currPos, result: s0 };
-
-      return s0;
-    }
-
-    function peg$parseassociationTail() {
-      var s0, s1, s2;
-
-      var key    = peg$currPos * 61 + 57,
-          cached = peg$cache[key];
-
-      if (cached) {
-        peg$currPos = cached.nextPos;
-        return cached.result;
-      }
-
-      s0 = peg$parseassociationMessage();
-      if (s0 === peg$FAILED) {
-        s0 = peg$currPos;
-        s1 = peg$parsebinaryMessage();
-        if (s1 !== peg$FAILED) {
-          s2 = peg$parseassociationTail();
-          if (s2 !== peg$FAILED) {
-            peg$reportedPos = s0;
-            s1 = peg$c138(s1, s2);
-            s0 = s1;
-          } else {
-            peg$currPos = s0;
-            s0 = peg$c1;
-          }
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c1;
-        }
-      }
-
-      peg$cache[key] = { nextPos: peg$currPos, result: s0 };
-
-      return s0;
-    }
-
     function peg$parseassociationSend() {
       var s0, s1, s2;
 
-      var key    = peg$currPos * 61 + 58,
+      var key    = peg$currPos * 59 + 56,
           cached = peg$cache[key];
 
       if (cached) {
@@ -3796,12 +3704,18 @@ globals.SmalltalkParser = (function() {
       }
 
       s0 = peg$currPos;
-      s1 = peg$parseunarySend();
+      s1 = peg$parsebinarySend();
       if (s1 !== peg$FAILED) {
-        s2 = peg$parseassociationTail();
+        peg$reportedPos = peg$currPos;
+        s2 = peg$c136(s1);
+        if (s2) {
+          s2 = peg$c112;
+        } else {
+          s2 = peg$c1;
+        }
         if (s2 !== peg$FAILED) {
           peg$reportedPos = s0;
-          s1 = peg$c139(s1, s2);
+          s1 = peg$c137(s1);
           s0 = s1;
         } else {
           peg$currPos = s0;
@@ -3820,7 +3734,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseassociationList() {
       var s0, s1, s2, s3, s4;
 
-      var key    = peg$currPos * 61 + 59,
+      var key    = peg$currPos * 59 + 57,
           cached = peg$cache[key];
 
       if (cached) {
@@ -3871,7 +3785,7 @@ globals.SmalltalkParser = (function() {
     function peg$parseassociations() {
       var s0, s1, s2, s3;
 
-      var key    = peg$currPos * 61 + 60,
+      var key    = peg$currPos * 59 + 58,
           cached = peg$cache[key];
 
       if (cached) {

support/parser.pegjs

@@ -258,17 +258,7 @@ method         = ws pattern:(keywordPattern / binaryPattern / unaryPattern) ws s
                  }
 
 
-associationMessage  = ws selector:"->" ws arg:(unarySend / operand) {
-                     return globals.SendNode._new()
-                            ._position_((line()).__at(column()))
-                            ._source_(text())
-                            ._selector_(selector)
-                            ._arguments_([arg]);
-                 }
-
-associationTail     = message:associationMessage / message:binaryMessage tail:associationTail  { return tail._valueForReceiver_(message); }
-
-associationSend     = receiver:unarySend tail:associationTail { return tail._valueForReceiver_(receiver); }
+associationSend     = send:binarySend & { return send._selector() === "->" } { return send; }
 
 associationList = ws "." ws expression:associationSend {return expression;}
 associations    = first:associationSend others:associationList* { return [first].concat(others); }