Fixed issue for navbar when having multi-line string literals

src/services/navigationBar.ts

@@ -15,6 +15,12 @@ namespace ts.NavigationBar {
      */
     const whiteSpaceRegex = /\s+/g;
 
+    /**
+     * Maximum amount of characters to return
+     * The amount was choosen arbitrarily.
+     */
+    const maxLength = 150;
+
     // Keep sourceFile handy so we don't have to search for it every time we need to call `getText`.
     let curCancellationToken: CancellationToken;
     let curSourceFile: SourceFile;
@@ -74,7 +80,7 @@ namespace ts.NavigationBar {
     }
 
     function nodeText(node: Node): string {
-        return node.getText(curSourceFile);
+        return cleanText(node.getText(curSourceFile));
     }
 
     function navigationBarNodeKind(n: NavigationBarNode): SyntaxKind {
@@ -194,7 +200,7 @@ namespace ts.NavigationBar {
                 // Handle named bindings in imports e.g.:
                 //    import * as NS from "mod";
                 //    import {a, b as B} from "mod";
-                const {namedBindings} = importClause;
+                const { namedBindings } = importClause;
                 if (namedBindings) {
                     if (namedBindings.kind === SyntaxKind.NamespaceImport) {
                         addLeafNode(namedBindings);
@@ -434,13 +440,13 @@ namespace ts.NavigationBar {
 
     function getItemName(node: Node, name: Node | undefined): string {
         if (node.kind === SyntaxKind.ModuleDeclaration) {
-            return getModuleName(<ModuleDeclaration>node);
+            return cleanText(getModuleName(<ModuleDeclaration>node));
         }
 
         if (name) {
             const text = nodeText(name);
             if (text.length > 0) {
-                return text;
+                return cleanText(text);
             }
         }
 
@@ -636,11 +642,11 @@ namespace ts.NavigationBar {
     function getFunctionOrClassName(node: FunctionExpression | FunctionDeclaration | ArrowFunction | ClassLikeDeclaration): string {
         const { parent } = node;
         if (node.name && getFullWidth(node.name) > 0) {
-            return declarationNameToString(node.name);
+            return cleanText(declarationNameToString(node.name));
         }
         // See if it is a var initializer. If so, use the var name.
         else if (isVariableDeclaration(parent)) {
-            return declarationNameToString(parent.name);
+            return cleanText(declarationNameToString(parent.name));
         }
         // See if it is of the form "<expr> = function(){...}". If so, use the text from the left-hand side.
         else if (isBinaryExpression(parent) && parent.operatorToken.kind === SyntaxKind.EqualsToken) {
@@ -658,9 +664,15 @@ namespace ts.NavigationBar {
             return "<class>";
         }
         else if (isCallExpression(parent)) {
-            const name = getCalledExpressionName(parent.expression);
+            let name = getCalledExpressionName(parent.expression);
             if (name !== undefined) {
-                const args = mapDefined(parent.arguments, a => isStringLiteralLike(a) ? a.getText(curSourceFile) : undefined).join(", ");
+                name = cleanText(name);
+
+                if (name.length > maxLength) {
+                    return `${name} callback`;
+                }
+
+                const args = cleanText(mapDefined(parent.arguments, a => isStringLiteralLike(a) ? a.getText(curSourceFile) : undefined).join(", "));
                 return `${name}(${args}) callback`;
             }
         }
@@ -691,4 +703,16 @@ namespace ts.NavigationBar {
                 return false;
         }
     }
+
+    function cleanText(text: string): string {
+        // Truncate to maximum amount of characters as we don't want to do a big replace operation.
+        text = text.length > maxLength ? text.substring(0, maxLength) + "..." : text;
+
+        // Replaces ECMAScript line terminators and removes the trailing `\` from each line:
+        // \n - Line Feed
+        // \r - Carriage Return
+        // \u2028 - Line separator
+        // \u2029 - Paragraph separator
+        return text.replace(/\\(\r?\n|\r|\u2028|\u2029)/g, "");
+    }
 }

tests/cases/fourslash/navigationBarItemsMultilineStringIdentifiers.ts → tests/cases/fourslash/navigationBarItemsMultilineStringIdentifiers1.ts

@@ -7,6 +7,10 @@
 ////}
 ////declare module "MultilineMadness" {}
 ////
+////declare module "Multiline\
+////Madness2" {
+////}
+////
 ////interface Foo {
 ////    "a1\\\r\nb";
 ////    "a2\
@@ -29,17 +33,17 @@ verify.navigationTree({
     "kind": "script",
     "childItems": [
         {
-            "text": "\"Multiline\\\nMadness\"",
+            "text": "\"MultilineMadness\"",
             "kind": "module",
             "kindModifiers": "declare"
         },
         {
-            "text": "\"Multiline\\r\\nMadness\"",
+            "text": "\"MultilineMadness2\"",
             "kind": "module",
             "kindModifiers": "declare"
         },
         {
-            "text": "\"MultilineMadness\"",
+            "text": "\"Multiline\\r\\nMadness\"",
             "kind": "module",
             "kindModifiers": "declare"
         },
@@ -52,7 +56,7 @@ verify.navigationTree({
                     "kind": "property"
                 },
                 {
-                    "text": "'a2\\\n    \\\n    b'",
+                    "text": "'a2        b'",
                     "kind": "method"
                 }
             ]
@@ -66,7 +70,7 @@ verify.navigationTree({
                     "kind": "property"
                 },
                 {
-                    "text": "\"a2\\\n    \\\n    b\"",
+                    "text": "\"a2        b\"",
                     "kind": "method"
                 }
             ]
@@ -80,17 +84,17 @@ verify.navigationBar([
         "kind": "script",
         "childItems": [
             {
-                "text": "\"Multiline\\\nMadness\"",
+                "text": "\"MultilineMadness\"",
                 "kind": "module",
                 "kindModifiers": "declare"
             },
             {
-                "text": "\"Multiline\\r\\nMadness\"",
+                "text": "\"MultilineMadness2\"",
                 "kind": "module",
                 "kindModifiers": "declare"
             },
             {
-                "text": "\"MultilineMadness\"",
+                "text": "\"Multiline\\r\\nMadness\"",
                 "kind": "module",
                 "kindModifiers": "declare"
             },
@@ -105,19 +109,19 @@ verify.navigationBar([
         ]
     },
     {
-        "text": "\"Multiline\\\nMadness\"",
+        "text": "\"MultilineMadness\"",
         "kind": "module",
         "kindModifiers": "declare",
         "indent": 1
     },
     {
-        "text": "\"Multiline\\r\\nMadness\"",
+        "text": "\"MultilineMadness2\"",
         "kind": "module",
         "kindModifiers": "declare",
         "indent": 1
     },
     {
-        "text": "\"MultilineMadness\"",
+        "text": "\"Multiline\\r\\nMadness\"",
         "kind": "module",
         "kindModifiers": "declare",
         "indent": 1
@@ -131,7 +135,7 @@ verify.navigationBar([
                 "kind": "property"
             },
             {
-                "text": "'a2\\\n    \\\n    b'",
+                "text": "'a2        b'",
                 "kind": "method"
             }
         ],
@@ -146,7 +150,7 @@ verify.navigationBar([
                 "kind": "property"
             },
             {
-                "text": "\"a2\\\n    \\\n    b\"",
+                "text": "\"a2        b\"",
                 "kind": "method"
             }
         ],

tests/cases/fourslash/navigationBarItemsMultilineStringIdentifiers2.ts

@@ -0,0 +1,85 @@
+
+//// function f(p1: () => any, p2: string) { }
+//// f(() => { }, `line1\
+//// line2\
+//// line3`);
+////
+//// class c1 {
+////     const a = ' ''line1\
+////         line2';
+//// }
+
+verify.navigationTree({
+    "text": "<global>",
+    "kind": "script",
+    "childItems": [
+        {
+            "text": "c1",
+            "kind": "class",
+            "childItems": [
+                {
+                    "text": "a",
+                    "kind": "property"
+                },
+                {
+                    "text": "'line1        line2'",
+                    "kind": "property"
+                }
+            ]
+        },
+        {
+            "text": "f",
+            "kind": "function"
+        },
+        {
+            "text": "f(`line1line2line3`) callback",
+            "kind": "function"
+        }
+    ]
+});
+
+verify.navigationBar([
+    {
+        "text": "<global>",
+        "kind": "script",
+        "childItems": [
+            {
+                "text": "c1",
+                "kind": "class"
+            },
+            {
+                "text": "f",
+                "kind": "function"
+            },
+            {
+                "text": "f(`line1line2line3`) callback",
+                "kind": "function"
+            }
+        ]
+    },
+    {
+        "text": "c1",
+        "kind": "class",
+        "childItems": [
+            {
+                "text": "a",
+                "kind": "property"
+            },
+            {
+                "text": "'line1        line2'",
+                "kind": "property"
+            }
+        ],
+        "indent": 1
+    },
+    {
+        "text": "f",
+        "kind": "function",
+        "indent": 1
+    },
+    {
+        "text": "f(`line1line2line3`) callback",
+        "kind": "function",
+        "indent": 1
+    }
+]);

tests/cases/fourslash/navigationBarItemsMultilineStringIdentifiers3.ts

@@ -0,0 +1,40 @@
+
+//// declare module 'MoreThanOneHundredAndFiftyCharacters\
+//// MoreThanOneHundredAndFiftyCharacters\
+//// MoreThanOneHundredAndFiftyCharacters\
+//// MoreThanOneHundredAndFiftyCharacters\
+//// MoreThanOneHundredAndFiftyCharacters\
+//// MoreThanOneHundredAndFiftyCharacters\
+//// MoreThanOneHundredAndFiftyCharacters' { }
+
+verify.navigationTree({
+    "text": "<global>",
+    "kind": "script",
+    "childItems": [
+        {
+            "text": "'MoreThanOneHundredAndFiftyCharactersMoreThanOneHundredAndFiftyCharactersMoreThanOneHundredAndFiftyCharactersMoreThanOneHundredAndFiftyCharacter...",
+            "kind": "module",
+            "kindModifiers": "declare"
+        }
+    ]
+});
+
+verify.navigationBar([
+    {
+        "text": "<global>",
+        "kind": "script",
+        "childItems": [
+            {
+                "text": "'MoreThanOneHundredAndFiftyCharactersMoreThanOneHundredAndFiftyCharactersMoreThanOneHundredAndFiftyCharactersMoreThanOneHundredAndFiftyCharacter...",
+                "kind": "module",
+                "kindModifiers": "declare"
+            }
+        ]
+    },
+    {
+        "text": "'MoreThanOneHundredAndFiftyCharactersMoreThanOneHundredAndFiftyCharactersMoreThanOneHundredAndFiftyCharactersMoreThanOneHundredAndFiftyCharacter...",
+        "kind": "module",
+        "kindModifiers": "declare",
+        "indent": 1
+    }
+]);