From dd1f982bded5c9fd51175be9ce569ac9e97551c3 Mon Sep 17 00:00:00 2001
From: Dick van den Brink <d_vandenbrink@outlook.com>
Date: Thu, 30 Apr 2015 17:40:35 +0200
Subject: [PATCH] Parse abstract keyword

---
 src/compiler/scanner.ts   |  1 +
 src/compiler/types.ts     | 22 ++++++++++++----------
 src/compiler/utilities.ts |  2 ++
 3 files changed, 15 insertions(+), 10 deletions(-)

diff --git a/src/compiler/scanner.ts b/src/compiler/scanner.ts
index f7224e619bb..94cb784ca88 100644
--- a/src/compiler/scanner.ts
+++ b/src/compiler/scanner.ts
@@ -43,6 +43,7 @@ module ts {
     }
 
     let textToToken: Map<SyntaxKind> = {
+        "abstract": SyntaxKind.AbstractKeyword,
         "any": SyntaxKind.AnyKeyword,
         "as": SyntaxKind.AsKeyword,
         "boolean": SyntaxKind.BooleanKeyword,
diff --git a/src/compiler/types.ts b/src/compiler/types.ts
index 4799f314063..1185b949e9c 100644
--- a/src/compiler/types.ts
+++ b/src/compiler/types.ts
@@ -131,6 +131,7 @@ module ts {
         StaticKeyword,
         YieldKeyword,
         // Contextual keywords
+        AbstractKeyword,
         AsKeyword,
         AnyKeyword,
         BooleanKeyword,
@@ -307,17 +308,18 @@ module ts {
         Private =           0x00000020,  // Property/Method
         Protected =         0x00000040,  // Property/Method
         Static =            0x00000080,  // Property/Method
-        Default =           0x00000100,  // Function/Class (export default declaration)
-        MultiLine =         0x00000200,  // Multi-line array or object literal
-        Synthetic =         0x00000400,  // Synthetic node (for full fidelity)
-        DeclarationFile =   0x00000800,  // Node is a .d.ts file
-        Let =               0x00001000,  // Variable declaration
-        Const =             0x00002000,  // Variable declaration
-        OctalLiteral =      0x00004000,  // Octal numeric literal
-        Namespace =         0x00008000,  // Namespace declaration
-        ExportContext =     0x00010000,  // Export context (initialized by binding)
+        Abstract =          0x00000100,
+        Default =           0x00000200,  // Function/Class (export default declaration)
+        MultiLine =         0x00000400,  // Multi-line array or object literal
+        Synthetic =         0x00000800,  // Synthetic node (for full fidelity)
+        DeclarationFile =   0x00001000,  // Node is a .d.ts file
+        Let =               0x00002000,  // Variable declaration
+        Const =             0x00004000,  // Variable declaration
+        OctalLiteral =      0x00008000,  // Octal numeric literal
+        Namespace =         0x00010000,  // Namespace declaration
+        ExportContext =     0x00020000,  // Export context (initialized by binding)
 
-        Modifier = Export | Ambient | Public | Private | Protected | Static | Default,
+        Modifier = Export | Ambient | Public | Private | Protected | Static | Abstract | Default,
         AccessibilityModifier = Public | Private | Protected,
         BlockScoped = Let | Const
     }
diff --git a/src/compiler/utilities.ts b/src/compiler/utilities.ts
index 5296f063a94..7dd89e9d99e 100644
--- a/src/compiler/utilities.ts
+++ b/src/compiler/utilities.ts
@@ -1141,6 +1141,7 @@ module ts {
             case SyntaxKind.PrivateKeyword:
             case SyntaxKind.ProtectedKeyword:
             case SyntaxKind.StaticKeyword:
+            case SyntaxKind.AbstractKeyword:
             case SyntaxKind.ExportKeyword:
             case SyntaxKind.DeclareKeyword:
             case SyntaxKind.ConstKeyword:
@@ -1626,6 +1627,7 @@ module ts {
             case SyntaxKind.PublicKeyword: return NodeFlags.Public;
             case SyntaxKind.ProtectedKeyword: return NodeFlags.Protected;
             case SyntaxKind.PrivateKeyword: return NodeFlags.Private;
+            case SyntaxKind.AbstractKeyword: return NodeFlags.Abstract;
             case SyntaxKind.ExportKeyword: return NodeFlags.Export;
             case SyntaxKind.DeclareKeyword: return NodeFlags.Ambient;
             case SyntaxKind.ConstKeyword: return NodeFlags.Const;