No Need to store dot token when parsing property access expression

sheetalkamat · sheetalkamat · commit 5ea469a8a88c · 2016-06-14T11:02:40.000-07:00
diff --git a/src/compiler/emitter.ts b/src/compiler/emitter.ts
@@ -2076,7 +2076,6 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, ge
             function createPropertyAccessExpression(expression: Expression, name: Identifier): PropertyAccessExpression {
                 const result = <PropertyAccessExpression>createSynthesizedNode(SyntaxKind.PropertyAccessExpression);
                 result.expression = parenthesizeForAccess(expression);
-                result.dotToken = createSynthesizedNode(SyntaxKind.DotToken);
                 result.name = name;
                 return result;
             }
@@ -2223,11 +2222,11 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, ge
             // Returns 'true' if the code was actually indented, false otherwise.
             // If the code is not indented, an optional valueToWriteWhenNotIndenting will be
             // emitted instead.
-            function indentIfOnDifferentLines(parent: Node, node1: Node, node2: Node, valueToWriteWhenNotIndenting?: string): boolean {
+            function indentIfOnDifferentLines(parent: Node, node1: TextRange, node2: TextRange, valueToWriteWhenNotIndenting?: string): boolean {
                 const realNodesAreOnDifferentLines = !nodeIsSynthesized(parent) && !nodeEndIsOnSameLineAsNodeStart(node1, node2);
 
                 // Always use a newline for synthesized code if the synthesizer desires it.
-                const synthesizedNodeIsOnDifferentLine = synthesizedNodeStartsOnNewLine(node2);
+                const synthesizedNodeIsOnDifferentLine = synthesizedNodeStartsOnNewLine(node2 as Node);
 
                 if (realNodesAreOnDifferentLines || synthesizedNodeIsOnDifferentLine) {
                     increaseIndent();
@@ -2257,7 +2256,10 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, ge
                 }
 
                 emit(node.expression);
-                const indentedBeforeDot = indentIfOnDifferentLines(node, node.expression, node.dotToken);
+                const dotRangeStart = nodeIsSynthesized(node.expression) ? -1 : node.expression.end;
+                const dotRangeEnd = nodeIsSynthesized(node.expression) ? -1 : skipTrivia(currentText, node.expression.end) + 1;
+                const dotToken = <TextRange>{ pos: dotRangeStart, end: dotRangeEnd };
+                const indentedBeforeDot = indentIfOnDifferentLines(node, node.expression, dotToken);
 
                 // 1 .toString is a valid property access, emit a space after the literal
                 // Also emit a space if expression is a integer const enum value - it will appear in generated code as numeric literal
@@ -2283,7 +2285,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, ge
                     write(".");
                 }
 
-                const indentedAfterDot = indentIfOnDifferentLines(node, node.dotToken, node.name);
+                const indentedAfterDot = indentIfOnDifferentLines(node, dotToken, node.name);
                 emit(node.name);
                 decreaseIndentIf(indentedBeforeDot, indentedAfterDot);
             }
@@ -2780,7 +2782,6 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, ge
                         const identifier = emitTempVariableAssignment(leftHandSideExpression.expression, /*canDefineTempVariablesInPlace*/ false, /*shouldEmitCommaBeforeAssignment*/ false);
                         synthesizedLHS.expression = identifier;
 
-                        (<PropertyAccessExpression>synthesizedLHS).dotToken = leftHandSideExpression.dotToken;
                         (<PropertyAccessExpression>synthesizedLHS).name = leftHandSideExpression.name;
                         write(", ");
                     }
@@ -3758,7 +3759,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, ge
                     getLineOfLocalPositionFromLineMap(currentLineMap, node2.end);
             }
 
-            function nodeEndIsOnSameLineAsNodeStart(node1: Node, node2: Node) {
+            function nodeEndIsOnSameLineAsNodeStart(node1: TextRange, node2: TextRange) {
                 return getLineOfLocalPositionFromLineMap(currentLineMap, node1.end) ===
                     getLineOfLocalPositionFromLineMap(currentLineMap, skipTrivia(currentText, node2.pos));
             }
diff --git a/src/compiler/parser.ts b/src/compiler/parser.ts
@@ -137,7 +137,6 @@ namespace ts {
                 return visitNodes(cbNodes, (<ObjectLiteralExpression>node).properties);
             case SyntaxKind.PropertyAccessExpression:
                 return visitNode(cbNode, (<PropertyAccessExpression>node).expression) ||
-                    visitNode(cbNode, (<PropertyAccessExpression>node).dotToken) ||
                     visitNode(cbNode, (<PropertyAccessExpression>node).name);
             case SyntaxKind.ElementAccessExpression:
                 return visitNode(cbNode, (<ElementAccessExpression>node).expression) ||
@@ -3571,7 +3570,7 @@ namespace ts {
             // If it wasn't then just try to parse out a '.' and report an error.
             const node = <PropertyAccessExpression>createNode(SyntaxKind.PropertyAccessExpression, expression.pos);
             node.expression = expression;
-            node.dotToken = parseExpectedToken(SyntaxKind.DotToken, /*reportAtCurrentPosition*/ false, Diagnostics.super_must_be_followed_by_an_argument_list_or_member_access);
+            parseExpectedToken(SyntaxKind.DotToken, /*reportAtCurrentPosition*/ false, Diagnostics.super_must_be_followed_by_an_argument_list_or_member_access);
             node.name = parseRightSideOfDot(/*allowIdentifierNames*/ true);
             return finishNode(node);
         }
@@ -3807,7 +3806,6 @@ namespace ts {
                 if (dotToken) {
                     const propertyAccess = <PropertyAccessExpression>createNode(SyntaxKind.PropertyAccessExpression, expression.pos);
                     propertyAccess.expression = expression;
-                    propertyAccess.dotToken = dotToken;
                     propertyAccess.name = parseRightSideOfDot(/*allowIdentifierNames*/ true);
                     expression = finishNode(propertyAccess);
                     continue;
diff --git a/src/compiler/types.ts b/src/compiler/types.ts
@@ -980,7 +980,6 @@ namespace ts {
     // @kind(SyntaxKind.PropertyAccessExpression)
     export interface PropertyAccessExpression extends MemberExpression, Declaration {
         expression: LeftHandSideExpression;
-        dotToken: Node;
         name: Identifier;
     }
 
diff --git a/tests/cases/unittests/incrementalParser.ts b/tests/cases/unittests/incrementalParser.ts
@@ -647,7 +647,7 @@ module m3 { }\
             const oldText = ScriptSnapshot.fromString(source);
             const newTextAndChange = withInsert(oldText, 0, "");
 
-            compareTrees(oldText, newTextAndChange.text, newTextAndChange.textChangeRange, 8);
+            compareTrees(oldText, newTextAndChange.text, newTextAndChange.textChangeRange, 7);
         });
 
         it("Class to interface", () => {

Original file line number	Diff line number	Diff line change
`@@ -980,7 +980,6 @@ namespace ts {`
`980`	`980`	`// @kind(SyntaxKind.PropertyAccessExpression)`
`981`	`981`	`export interface PropertyAccessExpression extends MemberExpression, Declaration {`
`982`	`982`	`expression: LeftHandSideExpression;`
`983`		`- dotToken: Node;`
`984`	`983`	`name: Identifier;`
`985`	`984`	`}`
`986`	`985`