Parsing support (including incremental parsing) for 'yield' expressions.

src/services/resources/diagnosticCode.generated.ts

@@ -96,6 +96,7 @@ module TypeScript {
         Type_expected: "Type expected.",
         Template_literal_cannot_be_used_as_an_element_name: "Template literal cannot be used as an element name.",
         Computed_property_names_cannot_be_used_here: "Computed property names cannot be used here.",
+        yield_expression_must_be_contained_within_a_generator_declaration: "'yield' expression must be contained within a generator declaration.",
         Duplicate_identifier_0: "Duplicate identifier '{0}'.",
         The_name_0_does_not_exist_in_the_current_scope: "The name '{0}' does not exist in the current scope.",
         The_name_0_does_not_refer_to_a_value: "The name '{0}' does not refer to a value.",

src/services/resources/diagnosticInformationMap.generated.ts

@@ -98,6 +98,7 @@ module TypeScript {
     "Type expected.": { "code": 1110, "category": DiagnosticCategory.Error },
     "Template literal cannot be used as an element name.": { "code": 1111, "category": DiagnosticCategory.Error },
     "Computed property names cannot be used here.": { "code": 1112, "category": DiagnosticCategory.Error },
+    "'yield' expression must be contained within a generator declaration.": { "code": 1113, "category": DiagnosticCategory.Error },
     "Duplicate identifier '{0}'.": { "code": 2000, "category": DiagnosticCategory.Error },
     "The name '{0}' does not exist in the current scope.": { "code": 2001, "category": DiagnosticCategory.Error },
     "The name '{0}' does not refer to a value.": { "code": 2002, "category": DiagnosticCategory.Error },

src/services/resources/diagnosticMessages.json

@@ -379,6 +379,10 @@
         "category": "Error",
         "code": 1112
     },
+    "'yield' expression must be contained within a generator declaration.": {
+        "category": "Error",
+        "code": 1113
+    },
     "Duplicate identifier '{0}'.": {
         "category": "Error",
         "code": 2000

src/services/syntax/constants.ts

@@ -15,13 +15,14 @@ module TypeScript {
         // only be used by the incremental parser if it is parsed in the same strict context as before.
         // last masks off the part of the int
         //
-        // The width of the node is stored in the remainder of the int.  This allows us up to 256MB
-        // for a node by using all 28 bits.  However, in the common case, we'll use less than 28 bits
+        // The width of the node is stored in the remainder of the int.  This allows us up to 128MB
+        // for a node by using all 27 bits.  However, in the common case, we'll use less than 27 bits
         // for the width.  Thus, the info will be stored in a single int in chakra.
         NodeDataComputed              = 0x00000001, // 0000 0000 0000 0000 0000 0000 0000 0001
         NodeIncrementallyUnusableMask = 0x00000002, // 0000 0000 0000 0000 0000 0000 0000 0010
         NodeParsedInStrictModeMask    = 0x00000004, // 0000 0000 0000 0000 0000 0000 0000 0100
         NodeParsedInDisallowInMask    = 0x00000008, // 0000 0000 0000 0000 0000 0000 0000 1000
-        NodeFullWidthShift            = 4,          // 1111 1111 1111 1111 1111 1111 1111 0000
+        NodeParsedInAllowYieldMask    = 0x00000010, // 0000 0000 0000 0000 0000 0000 0001 0000
+        NodeFullWidthShift            = 5,          // 1111 1111 1111 1111 1111 1111 1110 0000
     }
 }