From 5942988f66ce79d4784348831b9fb0105ca0e5bf Mon Sep 17 00:00:00 2001
From: David Majda <david@majda.cz>
Date: Sun, 6 Jan 2013 10:21:12 +0100
Subject: [PATCH] Remove the |startRule| property from the AST

It's redundant.
---
 lib/compiler/passes/generate-javascript.js |  2 +-
 lib/compiler/passes/remove-proxy-rules.js  |  2 +-
 lib/parser.js                              |  3 +--
 spec/parser.spec.js                        | 12 ++++--------
 src/parser.pegjs                           |  3 +--
 5 files changed, 8 insertions(+), 14 deletions(-)

diff --git a/lib/compiler/passes/generate-javascript.js b/lib/compiler/passes/generate-javascript.js
index 719c93b..1784db2 100644
--- a/lib/compiler/passes/generate-javascript.js
+++ b/lib/compiler/passes/generate-javascript.js
@@ -6,7 +6,7 @@ module.exports = function(ast, options) {
   options = utils.clone(options);
   utils.defaults(options, {
     cache:              false,
-    allowedStartRules:  [ast.startRule],
+    allowedStartRules:  [ast.rules[0].name],
     optimize:           "speed"
   });
 
diff --git a/lib/compiler/passes/remove-proxy-rules.js b/lib/compiler/passes/remove-proxy-rules.js
index 6c59570..9b4d629 100644
--- a/lib/compiler/passes/remove-proxy-rules.js
+++ b/lib/compiler/passes/remove-proxy-rules.js
@@ -58,7 +58,7 @@ module.exports = function(ast, options) {
   var indices = [],
       allowedStartRules = options.allowedStartRules !== undefined
         ? options.allowedStartRules
-        : [ast.startRule];
+        : [ast.rules[0].name];
 
   utils.each(ast.rules, function(rule, i) {
     if (isProxyRule(rule)) {
diff --git a/lib/parser.js b/lib/parser.js
index 8427ad3..d8ad3b5 100644
--- a/lib/parser.js
+++ b/lib/parser.js
@@ -77,8 +77,7 @@ module.exports = (function() {
               return {
                 type:        "grammar",
                 initializer: initializer !== "" ? initializer : null,
-                rules:       rules,
-                startRule:   rules[0].name
+                rules:       rules
               };
             },
         peg$c4 = function(code) {
diff --git a/spec/parser.spec.js b/spec/parser.spec.js
index b6b908a..4c5570f 100644
--- a/spec/parser.spec.js
+++ b/spec/parser.spec.js
@@ -34,8 +34,7 @@ describe("PEG.js grammar parser", function() {
           name:       "start",
           expression: expression
         }
-      ],
-      startRule:   "start"
+      ]
     };
   }
 
@@ -170,20 +169,17 @@ describe("PEG.js grammar parser", function() {
     expect('a = "abcd"').toParseAs({
       type:        "grammar",
       initializer: null,
-      rules:       [ruleA],
-      startRule:   "a"
+      rules:       [ruleA]
     });
     expect('{ code } a = "abcd"').toParseAs({
       type:        "grammar",
       initializer: { type: "initializer", code: " code " },
-      rules:       [ruleA],
-      startRule:   "a"
+      rules:       [ruleA]
     });
     expect('a = "abcd"; b = "efgh"; c = "ijkl"').toParseAs({
       type:        "grammar",
       initializer: null,
-      rules:       [ruleA, ruleB, ruleC],
-      startRule:   "a"
+      rules:       [ruleA, ruleB, ruleC]
     });
   });
 
diff --git a/src/parser.pegjs b/src/parser.pegjs
index 39ed65a..dba4f37 100644
--- a/src/parser.pegjs
+++ b/src/parser.pegjs
@@ -7,8 +7,7 @@ grammar
       return {
         type:        "grammar",
         initializer: initializer !== "" ? initializer : null,
-        rules:       rules,
-        startRule:   rules[0].name
+        rules:       rules
       };
     }