Regularize Jasmine custom matcher signatures

The "toParse" matcher in generated-parser-behavior.spec.js effectively
had these signatures:

  toParse(input)
  toParse(input, expected)
  toParse(input, options, expected)

This commit regularizes them to:

  toParse(input)
  toParse(input, expected)
  toParse(input, expected, options)

Similarly, the "toFailToParse" matcher in
generated-parser-behavior.spec.js effectively had these signatures:

  toFailToParse(input)
  toFailToParse(input, details)
  toFailToParse(input, options, details)

This commit regularizes them to:

  toFailToParse(input)
  toFailToParse(input, details)
  toFailToParse(input, details, options)

Finally, the "toChangeAST" matcher in helpers.js effectively had these
signatures:

  toChangeAST(grammar, details)
  toChangeAST(grammar, options, details)

This commit regularizes them to:

  toChangeAST(grammar, details)
  toChangeAST(grammar, details, options)

The overall purpose of these changes is to avoid different parameters
appearing at the same position, which is hard to manage without using
"arguments".

spec/behavior/generated-parser-behavior.spec.js

@@ -34,9 +34,8 @@ describe("generated parser behavior", function() {
 
   beforeEach(function() {
     this.addMatchers({
-      toParse: function(input) {
+      toParse: function(input, expected) {
-        var options  = arguments.length > 2 ? arguments[1] : {},
+        var options = arguments.length > 2 ? arguments[2] : {},
-            expected = arguments[arguments.length - 1],
             result;
 
         try {
@@ -68,11 +67,8 @@ describe("generated parser behavior", function() {
         }
       },
 
-      toFailToParse: function(input) {
+      toFailToParse: function(input, details) {
-        var options = arguments.length > 2 ? arguments[1] : {},
+        var options = arguments.length > 2 ? arguments[2] : {},
-            details = arguments.length > 1
-                        ? arguments[arguments.length - 1]
-                        : undefined,
             result;
 
         try {

spec/unit/compiler/passes/helpers.js

@@ -4,7 +4,7 @@
 
 beforeEach(function() {
   this.addMatchers({
-    toChangeAST: function(grammar) {
+    toChangeAST: function(grammar, details) {
       function matchDetails(value, details) {
         function isArray(value) {
           return Object.prototype.toString.apply(value) === "[object Array]";
@@ -42,8 +42,7 @@ beforeEach(function() {
         }
       }
 
-      var options = arguments.length > 2 ? arguments[1] : {},
+      var options = arguments.length > 2 ? arguments[2] : {},
-          details = arguments[arguments.length - 1],
           ast     = PEG.parser.parse(grammar);
 
       this.actual(ast, options);

spec/unit/compiler/passes/remove-proxy-rules.spec.js

@@ -13,7 +13,6 @@ describe("compiler pass |removeProxyRules|", function() {
           'proxy = proxied',
           'proxied = "a"'
         ].join("\n"),
-        { allowedStartRules: ["start"] },
         {
           rules: [
             {
@@ -22,7 +21,8 @@ describe("compiler pass |removeProxyRules|", function() {
             },
             { name: "proxied" }
           ]
-        }
+        },
+        { allowedStartRules: ["start"] }
       );
     });
   });
@@ -35,7 +35,6 @@ describe("compiler pass |removeProxyRules|", function() {
           'proxy = proxied',
           'proxied = "a"'
         ].join("\n"),
-        { allowedStartRules: ["start", "proxy"] },
         {
           rules: [
             {
@@ -48,7 +47,8 @@ describe("compiler pass |removeProxyRules|", function() {
             },
             { name: "proxied" }
           ]
-        }
+        },
+        { allowedStartRules: ["start", "proxy"] }
       );
     });
   });