Merge pull request microsoft#1241 from Microsoft/drop_unused_variables

drop unused variables

Author: vladima

src/compiler/parser.ts

@@ -2664,8 +2664,6 @@ module ts {
 
  function parseReturnStatement(): ReturnStatement {
  var node = <ReturnStatement>createNode(SyntaxKind.ReturnStatement);
- var returnTokenStart = scanner.getTokenPos();
- var returnTokenLength = scanner.getTextPos() - returnTokenStart;
 
  parseExpected(SyntaxKind.ReturnKeyword);
  if (!canParseSemicolon()) {
@@ -2935,8 +2933,6 @@ module ts {
  node.type = parseTypeAnnotation();
 
  // Issue any initializer-related errors on the equals token
- var initializerStart = scanner.getTokenPos();
- var initializerFirstTokenLength = scanner.getTextPos() - initializerStart;
  node.initializer = parseInitializer(/*inParameter*/ false, noIn);
 
  return finishNode(node);
@@ -2998,7 +2994,6 @@ module ts {
  function parsePropertyMemberDeclaration(pos: number, modifiers: ModifiersArray): Declaration {
  var name = parsePropertyName();
  var flags = modifiers ? modifiers.flags : 0;
- var questionStart = scanner.getTokenPos();
  if (parseOptional(SyntaxKind.QuestionToken)) {
  // Note: this is not legal as per the grammar. But we allow it in the parser and
  // report an error in the grammar checker.
@@ -3031,8 +3026,6 @@ module ts {
  property.name = name;
  property.type = parseTypeAnnotation();
 
- var initializerStart = scanner.getTokenPos();
- var initializerFirstTokenLength = scanner.getTextPos() - initializerStart;
  property.initializer = parseInitializer(/*inParameter*/ false);
  parseSemicolon();
 
@@ -3324,7 +3317,6 @@ module ts {
  var pos = getNodePos();
  var modifiers = parseModifiers(modifierContext);
  if (token === SyntaxKind.ExportKeyword) {
- var modifiersEnd = scanner.getStartPos();
  nextToken();
  if (parseOptional(SyntaxKind.EqualsToken)) {
  return parseExportAssignmentTail(pos, modifiers);

tests/baselines/reference/spaceBeforeQuestionMarkInPropertyAssignment.errors.txt

@@ -0,0 +1,7 @@
+tests/cases/compiler/spaceBeforeQuestionMarkInPropertyAssignment.ts(1,12): error TS1162: An object member cannot be declared optional.
+
+
+==== tests/cases/compiler/spaceBeforeQuestionMarkInPropertyAssignment.ts (1 errors) ====
+ var x = {x ?: 1} // should not crash
+ ~
+!!! error TS1162: An object member cannot be declared optional.

tests/cases/compiler/spaceBeforeQuestionMarkInPropertyAssignment.ts

@@ -0,0 +1 @@
+var x = {x ?: 1} // should not crash