add support for classifying jsx text and string literals in jsx attributes

src/harness/fourslash.ts

@@ -3285,6 +3285,30 @@ namespace FourSlashInterface {
             return getClassification("typeAliasName", text, position);
         }
 
+        export function jsxOpenTagName(text: string, position?: number): { classificationType: string; text: string; textSpan?: FourSlash.TextSpan } {
+            return getClassification("jsxOpenTagName", text, position);
+        }
+
+        export function jsxCloseTagName(text: string, position?: number): { classificationType: string; text: string; textSpan?: FourSlash.TextSpan } {
+            return getClassification("jsxCloseTagName", text, position);
+        }
+
+        export function jsxSelfClosingTagName(text: string, position?: number): { classificationType: string; text: string; textSpan?: FourSlash.TextSpan } {
+            return getClassification("jsxSelfClosingTagName", text, position);
+        }
+
+        export function jsxAttribute(text: string, position?: number): { classificationType: string; text: string; textSpan?: FourSlash.TextSpan } {
+            return getClassification("jsxAttribute", text, position);
+        }
+
+        export function jsxText(text: string, position?: number): { classificationType: string; text: string; textSpan?: FourSlash.TextSpan } {
+            return getClassification("jsxText", text, position);
+        }
+
+        export function jsxAttributeStringLiteralValue(text: string, position?: number): { classificationType: string; text: string; textSpan?: FourSlash.TextSpan } {
+            return getClassification("jsxAttributeStringLiteralValue", text, position);
+        }
+
         function getClassification(type: string, text: string, position?: number) {
             return {
                 classificationType: type,

src/services/services.ts

@@ -1616,6 +1616,9 @@ namespace ts {
         public static jsxOpenTagName = "jsx open tag name";
         public static jsxCloseTagName = "jsx close tag name";
         public static jsxSelfClosingTagName = "jsx self closing tag name";
+        public static jsxAttribute = "jsx attribute";
+        public static jsxText = "jsx text";
+        public static jsxAttributeStringLiteralValue = "jsx attribute string literal value";
     }
 
     export const enum ClassificationType {
@@ -1640,7 +1643,9 @@ namespace ts {
         jsxOpenTagName = 19,
         jsxCloseTagName = 20,
         jsxSelfClosingTagName = 21,
-        jsxAttribute = 22
+        jsxAttribute = 22,
+        jsxText = 23,
+        jsxAttributeStringLiteralValue = 24,
     }
 
     /// Language Service
@@ -6575,6 +6580,9 @@ namespace ts {
                 case ClassificationType.jsxOpenTagName: return ClassificationTypeNames.jsxOpenTagName;
                 case ClassificationType.jsxCloseTagName: return ClassificationTypeNames.jsxCloseTagName;
                 case ClassificationType.jsxSelfClosingTagName: return ClassificationTypeNames.jsxSelfClosingTagName;
+                case ClassificationType.jsxAttribute: return ClassificationTypeNames.jsxAttribute;
+                case ClassificationType.jsxText: return ClassificationTypeNames.jsxText;
+                case ClassificationType.jsxAttributeStringLiteralValue: return ClassificationTypeNames.jsxAttributeStringLiteralValue;
             }
         }
 
@@ -6783,12 +6791,12 @@ namespace ts {
                 }
             }
 
-            function classifyToken(token: Node): void {
+            function classifyTokenOrJsxText(token: Node): void {
                 if (nodeIsMissing(token)) {
                     return;
                 }
 
-                const tokenStart = classifyLeadingTriviaAndGetTokenStart(token);
+                const tokenStart = token.kind === SyntaxKind.JsxText ? token.pos : classifyLeadingTriviaAndGetTokenStart(token);
 
                 const tokenWidth = token.end - tokenStart;
                 Debug.assert(tokenWidth >= 0);
@@ -6824,7 +6832,8 @@ namespace ts {
                             // the '=' in a variable declaration is special cased here.
                             if (token.parent.kind === SyntaxKind.VariableDeclaration ||
                                 token.parent.kind === SyntaxKind.PropertyDeclaration ||
-                                token.parent.kind === SyntaxKind.Parameter) {
+                                token.parent.kind === SyntaxKind.Parameter ||
+                                token.parent.kind === SyntaxKind.JsxAttribute) {
                                 return ClassificationType.operator;
                             }
                         }
@@ -6843,7 +6852,7 @@ namespace ts {
                     return ClassificationType.numericLiteral;
                 }
                 else if (tokenKind === SyntaxKind.StringLiteral || tokenKind === SyntaxKind.StringLiteralType) {
-                    return ClassificationType.stringLiteral;
+                    return token.parent.kind === SyntaxKind.JsxAttribute ? ClassificationType.jsxAttributeStringLiteralValue : ClassificationType.stringLiteral;
                 }
                 else if (tokenKind === SyntaxKind.RegularExpressionLiteral) {
                     // TODO: we should get another classification type for these literals.
@@ -6853,6 +6862,9 @@ namespace ts {
                     // TODO (drosen): we should *also* get another classification type for these literals.
                     return ClassificationType.stringLiteral;
                 }
+                else if (tokenKind === SyntaxKind.JsxText) {
+                    return ClassificationType.jsxText;
+                }
                 else if (tokenKind === SyntaxKind.Identifier) {
                     if (token) {
                         switch (token.parent.kind) {
@@ -6926,8 +6938,8 @@ namespace ts {
                     const children = element.getChildren(sourceFile);
                     for (let i = 0, n = children.length; i < n; i++) {
                         const child = children[i];
-                        if (isToken(child)) {
-                            classifyToken(child);
+                        if (isToken(child) || child.kind === SyntaxKind.JsxText) {
+                            classifyTokenOrJsxText(child);
                         }
                         else {
                             // Recurse into our child nodes.

tests/cases/fourslash/fourslash.ts

@@ -338,6 +338,36 @@ declare namespace FourSlashInterface {
             text: string;
             textSpan?: TextSpan;
         };
+        function jsxOpenTagName(text: string, position?: number): {
+            classificationType: string;
+            text: string;
+            textSpan?: TextSpan;
+        };
+        function jsxCloseTagName(text: string, position?: number): {
+            classificationType: string;
+            text: string;
+            textSpan?: TextSpan;
+        };
+        function jsxSelfClosingTagName(text: string, position?: number): {
+            classificationType: string;
+            text: string;
+            textSpan?: TextSpan;
+        };
+        function jsxAttribute(text: string, position?: number): {
+            classificationType: string;
+            text: string;
+            textSpan?: TextSpan;
+        };
+        function jsxText(text: string, position?: number): {
+            classificationType: string;
+            text: string;
+            textSpan?: TextSpan;
+        };
+        function jsxAttributeStringLiteralValue(text: string, position?: number): {
+            classificationType: string;
+            text: string;
+            textSpan?: TextSpan;
+        };
     }
 }
 declare function verifyOperationIsCancelled(f: any): void;

tests/cases/fourslash/syntacticClassificationsJsx1.ts

@@ -0,0 +1,27 @@
+/// <reference path="fourslash.ts"/>
+
+// @Filename: file1.tsx
+////let x  = <div a = "some-value" b = {1}>
+////    some jsx text
+////</div>;
+////
+////let y = <element attr="123"/>
+
+const c = classification;   
+verify.syntacticClassificationsAre(
+    c.keyword("let"), c.identifier("x"), c.operator("="),
+        c.punctuation("<"), 
+            c.jsxOpenTagName("div"),
+                c.jsxAttribute("a"), c.operator("="), c.jsxAttributeStringLiteralValue(`"some-value"`),
+                c.jsxAttribute("b"), c.operator("="), c.punctuation("{"), c.numericLiteral("1"), c.punctuation("}"),
+            c.punctuation(">"),
+            c.jsxText(`
+    some jsx text
+`),
+        c.punctuation("<"), c.punctuation("/"), c.jsxCloseTagName("div"), c.punctuation(">"), c.punctuation(";"),
+    c.keyword("let"), c.identifier("y"), c.operator("="),
+        c.punctuation("<"), 
+            c.jsxSelfClosingTagName("element"), 
+                c.jsxAttribute("attr"), c.operator("="), c.jsxAttributeStringLiteralValue(`"123"`), 
+           c.punctuation("/"), c.punctuation(">")
+)