fix(reserved_words): Fix the way we deal with reserved words in the parser

to be consistent with the code generation path.

Author: kasperl

bin/parser_generator_for_spec.dart

@@ -227,6 +227,204 @@ main(arguments) {
       "_privateField",
       "'World'|hello",
       "1;'World'|hello",
-      "'World'|hello;1"
+      "'World'|hello;1",
+
+      "assert",
+      "break",
+      "case",
+      "catch",
+      "class",
+      "const",
+      "continue",
+      "default",
+      "do",
+      "else",
+      "enum",
+      "extends",
+      "final",
+      "finally",
+      "for",
+      "if",
+      "in",
+      "is",
+      "new",
+      "rethrow",
+      "return",
+      "super",
+      "switch",
+      "this",
+      "throw",
+      "try",
+      "var",
+      "void",
+      "while",
+      "with",
+
+      "assert = 42",
+      "break = 42",
+      "case = 42",
+      "catch = 42",
+      "class = 42",
+      "const = 42",
+      "continue = 42",
+      "default = 42",
+      "do = 42",
+      "else = 42",
+      "enum = 42",
+      "extends = 42",
+      "false = 42",
+      "final = 42",
+      "finally = 42",
+      "for = 42",
+      "if = 42",
+      "in = 42",
+      "is = 42",
+      "new = 42",
+      "null = 42",
+      "rethrow = 42",
+      "return = 42",
+      "super = 42",
+      "switch = 42",
+      "this = 42",
+      "throw = 42",
+      "true = 42",
+      "try = 42",
+      "var = 42",
+      "void = 42",
+      "while = 42",
+      "with = 42",
+
+      "assert()",
+      "break()",
+      "case()",
+      "catch()",
+      "class()",
+      "const()",
+      "continue()",
+      "default()",
+      "do()",
+      "else()",
+      "enum()",
+      "extends()",
+      "final()",
+      "finally()",
+      "for()",
+      "if()",
+      "in()",
+      "is()",
+      "new()",
+      "rethrow()",
+      "return()",
+      "super()",
+      "switch()",
+      "this()",
+      "throw()",
+      "try()",
+      "var()",
+      "void()",
+      "while()",
+      "with()",
+
+      "o.assert",
+      "o.break",
+      "o.case",
+      "o.catch",
+      "o.class",
+      "o.const",
+      "o.continue",
+      "o.default",
+      "o.do",
+      "o.else",
+      "o.enum",
+      "o.extends",
+      "o.false",
+      "o.final",
+      "o.finally",
+      "o.for",
+      "o.if",
+      "o.in",
+      "o.is",
+      "o.new",
+      "o.null",
+      "o.rethrow",
+      "o.return",
+      "o.super",
+      "o.switch",
+      "o.this",
+      "o.throw",
+      "o.true",
+      "o.try",
+      "o.var",
+      "o.void",
+      "o.while",
+      "o.with",
+
+      "o.assert = 42",
+      "o.break = 42",
+      "o.case = 42",
+      "o.catch = 42",
+      "o.class = 42",
+      "o.const = 42",
+      "o.continue = 42",
+      "o.default = 42",
+      "o.do = 42",
+      "o.else = 42",
+      "o.enum = 42",
+      "o.extends = 42",
+      "o.false = 42",
+      "o.final = 42",
+      "o.finally = 42",
+      "o.for = 42",
+      "o.if = 42",
+      "o.in = 42",
+      "o.is = 42",
+      "o.new = 42",
+      "o.null = 42",
+      "o.rethrow = 42",
+      "o.return = 42",
+      "o.super = 42",
+      "o.switch = 42",
+      "o.this = 42",
+      "o.throw = 42",
+      "o.true = 42",
+      "o.try = 42",
+      "o.var = 42",
+      "o.void = 42",
+      "o.while = 42",
+      "o.with = 42",
+
+      "o.assert()",
+      "o.break()",
+      "o.case()",
+      "o.catch()",
+      "o.class()",
+      "o.const()",
+      "o.continue()",
+      "o.default()",
+      "o.do()",
+      "o.else()",
+      "o.enum()",
+      "o.extends()",
+      "o.false()",
+      "o.final()",
+      "o.finally()",
+      "o.for()",
+      "o.if()",
+      "o.in()",
+      "o.is()",
+      "o.new()",
+      "o.null()",
+      "o.rethrow()",
+      "o.return()",
+      "o.super()",
+      "o.switch()",
+      "o.this()",
+      "o.throw()",
+      "o.true()",
+      "o.try()",
+      "o.var()",
+      "o.void()",
+      "o.while()",
+      "o.with()",
   ]);
 }

lib/core/parser/eval_access.dart

@@ -8,7 +8,7 @@ import 'package:angular/core/module.dart';
 
 class AccessScope extends syntax.AccessScope with AccessReflective {
   final Symbol symbol;
-  AccessScope(String name) : super(name), symbol = new Symbol(name);
+  AccessScope(String name) : super(name), symbol = newSymbol(name);
   eval(scope, [FilterMap filters]) => _eval(scope);
   assign(scope, value) => _assign(scope, scope, value);
 }
@@ -24,7 +24,7 @@ class AccessScopeFast extends syntax.AccessScope with AccessFast {
 class AccessMember extends syntax.AccessMember with AccessReflective {
   final Symbol symbol;
   AccessMember(object, String name)
-      : super(object, name), symbol = new Symbol(name);
+      : super(object, name), symbol = newSymbol(name);
   eval(scope, [FilterMap filters]) => _eval(object.eval(scope, filters));
   assign(scope, value) => _assign(scope, object.eval(scope), value);
   _assignToNonExisting(scope, value) => object.assign(scope, { name: value });
@@ -84,6 +84,9 @@ abstract class AccessReflective {
       _cachedKind = CACHED_MAP;
       _cachedValue = null;
       return holder[name];
+    } else if (symbol == null) {
+      _cachedHolder = UNINITIALIZED;
+      return null;
     }
     InstanceMirror mirror = reflect(holder);
     try {
@@ -119,7 +122,7 @@ abstract class AccessReflective {
       holder[name] = value;
     } else if (holder == null) {
       _assignToNonExisting(scope, value);
-    } else {
+    } else if (symbol != null) {
       reflect(holder).setField(symbol, value);
     }
     return value;

lib/core/parser/eval_calls.dart

@@ -9,15 +9,15 @@ class CallScope extends syntax.CallScope with CallReflective {
   final Symbol symbol;
   CallScope(name, arguments)
       : super(name, arguments)
-      , symbol = new Symbol(name);
+      , symbol = newSymbol(name);
   eval(scope, [FilterMap filters]) => _eval(scope, scope);
 }
 
 class CallMember extends syntax.CallMember with CallReflective {
   final Symbol symbol;
   CallMember(object, name, arguments)
       : super(object, name, arguments)
-      , symbol = new Symbol(name);
+      , symbol = newSymbol(name);
   eval(scope, [FilterMap filters]) => _eval(scope, object.eval(scope, filters));
 }
 
@@ -94,6 +94,9 @@ abstract class CallReflective {
       _cachedKind = CACHED_MAP;
       _cachedValue = null;
       return relaxFnApply(ensureFunctionFromMap(holder, name), arguments);
+    } else if (symbol == null) {
+      _cachedHolder = UNINITIALIZED;
+      throw new EvalError("Undefined function $name");
     } else {
       InstanceMirror mirror = reflect(holder);
       _cachedKind = CACHED_FUNCTION;

lib/core/parser/utils.dart

@@ -2,6 +2,7 @@ library angular.core.parser.utils;
 
 import 'package:angular/core/parser/syntax.dart' show Expression;
 import 'package:angular/core/module.dart';
+import 'package:angular/utils.dart' show isReservedWord;
 export 'package:angular/utils.dart' show relaxFnApply, relaxFnArgs, toBool;
 
 /// Marker for an uninitialized value.
@@ -21,7 +22,7 @@ class EvalError {
 /// Evaluate the [list] in context of the [scope].
 List evalList(scope, List<Expression> list, [FilterMap filters]) {
   int length = list.length;
-  for(int cacheLength = _evalListCache.length; cacheLength <= length; cacheLength++) {
+  for (int cacheLength = _evalListCache.length; cacheLength <= length; cacheLength++) {
     _evalListCache.add(new List(cacheLength));
   }
   List result = _evalListCache[length];
@@ -96,3 +97,9 @@ setKeyed(object, key, value) {
   }
   return value;
 }
+
+/// Returns a new symbol with the given name if the name is a legal
+/// symbol name. Otherwise, returns null.
+Symbol newSymbol(String name) {
+  return isReservedWord(name) ? null : new Symbol(name);
+}

lib/directive/ng_pluralize.dart

@@ -96,7 +96,16 @@ class NgPluralizeDirective {
   int offset;
   var discreteRules = <String, String>{};
   var categoryRules = <Symbol, String>{};
+
   static final RegExp IS_WHEN = new RegExp(r'^when-(minus-)?.');
+  static const Map<String, Symbol> SYMBOLS = const {
+    'zero'  : #zero,
+    'one'   : #one,
+    'two'   : #two,
+    'few'   : #few,
+    'many'  : #many,
+    'other' : #other,
+  };
 
   NgPluralizeDirective(this.scope, this.element, this.interpolate,
                        NodeAttrs attributes, this.parser) {
@@ -116,10 +125,11 @@ class NgPluralizeDirective {
     }
 
     whens.forEach((k, v) {
-      if (['zero', 'one', 'two', 'few', 'many', 'other'].contains(k)) {
-        this.categoryRules[new Symbol(k.toString())] = v;
+      Symbol symbol = SYMBOLS[k];
+      if (symbol != null) {
+        this.categoryRules[symbol] = v;
       } else {
-        this.discreteRules[k.toString()] = v;
+        this.discreteRules[k] = v;
       }
     });
   }

lib/tools/parser_generator/dart_code_gen.dart

@@ -1,6 +1,6 @@
 library dart_code_gen;
 
-import 'package:angular/tools/reserved_dart_keywords.dart';
+import 'package:angular/utils.dart' show isReservedWord;
 import 'package:angular/core/parser/syntax.dart';
 
 escape(String s) => s.replaceAllMapped(new RegExp(r'(\"|\$|\n)'), (m) {
@@ -229,7 +229,7 @@ class HelperMap {
   String lookup(String key) {
     String name = _computeName(key);
     if (helpers.containsKey(key)) return name;
-    helpers[key] = isReserved(key)
+    helpers[key] = isReservedWord(key)
         ? templateForReserved(name, key)
         : template(name, key);
     return name;

lib/tools/parser_getter_setter/generator.dart

@@ -1,5 +1,5 @@
 import 'package:angular/core/parser/parser.dart';
-import 'package:angular/tools/reserved_dart_keywords.dart';
+import 'package:angular/utils.dart' show isReservedWord;
 import 'dart:math';
 
 class DartGetterSetterGen extends ParserBackend {
@@ -9,12 +9,12 @@ class DartGetterSetterGen extends ParserBackend {
   bool isAssignable(expression) => true;
 
   registerAccess(String name) {
-    if (isReserved(name)) return;
+    if (isReservedWord(name)) return;
     properties.add(name);
   }
 
   registerCall(String name, List arguments) {
-    if (isReserved(name)) return;
+    if (isReservedWord(name)) return;
     Set<int> arities = calls.putIfAbsent(name, () => new Set<int>());
     arities.add(arguments.length);
   }