Merge pull request #32565 from amcasey/TripleSlashClassification

Support classification of triple-slash references

Author: amcasey

src/services/classifier.ts

@@ -683,6 +683,11 @@ namespace ts {
                     return;
                 }
             }
+            else if (kind === SyntaxKind.SingleLineCommentTrivia) {
+                if (tryClassifyTripleSlashComment(start, width)) {
+                    return;
+                }
+            }
 
             // Simple comment.  Just add as is.
             pushCommentRange(start, width);
@@ -755,6 +760,84 @@ namespace ts {
             }
         }
 
+        function tryClassifyTripleSlashComment(start: number, width: number): boolean {
+            const tripleSlashXMLCommentRegEx = /^(\/\/\/\s*)(<)(?:(\S+)((?:[^/]|\/[^>])*)(\/>)?)?/im;
+            const attributeRegex = /(\S+)(\s*)(=)(\s*)('[^']+'|"[^"]+")/img;
+
+            const text = sourceFile.text.substr(start, width);
+            const match = tripleSlashXMLCommentRegEx.exec(text);
+            if (!match) {
+                return false;
+            }
+
+            let pos = start;
+
+            pushCommentRange(pos, match[1].length); // ///
+            pos += match[1].length;
+
+            pushClassification(pos, match[2].length, ClassificationType.punctuation); // <
+            pos += match[2].length;
+
+            if (!match[3]) {
+                return true;
+            }
+
+            pushClassification(pos, match[3].length, ClassificationType.jsxSelfClosingTagName); // element name
+            pos += match[3].length;
+
+            const attrText = match[4];
+            let attrPos = pos;
+            while (true) {
+                const attrMatch = attributeRegex.exec(attrText);
+                if (!attrMatch) {
+                    break;
+                }
+
+                const newAttrPos = pos + attrMatch.index;
+                if (newAttrPos > attrPos) {
+                    pushCommentRange(attrPos, newAttrPos - attrPos);
+                    attrPos = newAttrPos;
+                }
+
+                pushClassification(attrPos, attrMatch[1].length, ClassificationType.jsxAttribute); // attribute name
+                attrPos += attrMatch[1].length;
+
+                if (attrMatch[2].length) {
+                    pushCommentRange(attrPos, attrMatch[2].length); // whitespace
+                    attrPos += attrMatch[2].length;
+                }
+
+                pushClassification(attrPos, attrMatch[3].length, ClassificationType.operator); // =
+                attrPos += attrMatch[3].length;
+
+                if (attrMatch[4].length) {
+                    pushCommentRange(attrPos, attrMatch[4].length); // whitespace
+                    attrPos += attrMatch[4].length;
+                }
+
+                pushClassification(attrPos, attrMatch[5].length, ClassificationType.jsxAttributeStringLiteralValue); // attribute value
+                attrPos += attrMatch[5].length;
+            }
+
+            pos += match[4].length;
+
+            if (pos > attrPos) {
+                pushCommentRange(attrPos, pos - attrPos);
+            }
+
+            if (match[5]) {
+                pushClassification(pos, match[5].length, ClassificationType.punctuation); // />
+                pos += match[5].length;
+            }
+
+            const end = start + width;
+            if (pos < end) {
+                pushCommentRange(pos, end - pos);
+            }
+
+            return true;
+        }
+
         function processJSDocTemplateTag(tag: JSDocTemplateTag) {
             for (const child of tag.getChildren()) {
                 processElement(child);

tests/cases/fourslash/syntacticClassificationsTripleSlash1.ts

@@ -0,0 +1,15 @@
+/// <reference path="fourslash.ts"/>
+
+//// /// <reference path="./module.ts" />
+
+var c = classification;
+verify.syntacticClassificationsAre(
+    c.comment("/// "),
+    c.punctuation("<"),
+    c.jsxSelfClosingTagName("reference"),
+    c.comment(" "),
+    c.jsxAttribute("path"),
+    c.operator("="),
+    c.jsxAttributeStringLiteralValue("\"./module.ts\""),
+    c.comment(" "),
+    c.punctuation("/>"));

tests/cases/fourslash/syntacticClassificationsTripleSlash10.ts

@@ -0,0 +1,13 @@
+/// <reference path="fourslash.ts"/>
+
+//// /// <reference path="./module.ts"
+
+var c = classification;
+verify.syntacticClassificationsAre(
+    c.comment("/// "),
+    c.punctuation("<"),
+    c.jsxSelfClosingTagName("reference"),
+    c.comment(" "),
+    c.jsxAttribute("path"),
+    c.operator("="),
+    c.jsxAttributeStringLiteralValue("\"./module.ts\""));

tests/cases/fourslash/syntacticClassificationsTripleSlash11.ts

@@ -0,0 +1,15 @@
+/// <reference path="fourslash.ts"/>
+
+//// /// <reference path="./module.ts" /
+
+var c = classification;
+verify.syntacticClassificationsAre(
+    c.comment("/// "),
+    c.punctuation("<"),
+    c.jsxSelfClosingTagName("reference"),
+    c.comment(" "),
+    c.jsxAttribute("path"),
+    c.operator("="),
+    c.jsxAttributeStringLiteralValue("\"./module.ts\""),
+    c.comment(" "),
+    c.comment("/"));

tests/cases/fourslash/syntacticClassificationsTripleSlash12.ts

@@ -0,0 +1,19 @@
+/// <reference path="fourslash.ts"/>
+
+//// /// <reference path="./module.ts" bad types="node" />
+
+var c = classification;
+verify.syntacticClassificationsAre(
+    c.comment("/// "),
+    c.punctuation("<"),
+    c.jsxSelfClosingTagName("reference"),
+    c.comment(" "),
+    c.jsxAttribute("path"),
+    c.operator("="),
+    c.jsxAttributeStringLiteralValue("\"./module.ts\""),
+    c.comment(" bad "),
+    c.jsxAttribute("types"),
+    c.operator("="),
+    c.jsxAttributeStringLiteralValue("\"node\""),
+    c.comment(" "),
+    c.punctuation("/>"));

tests/cases/fourslash/syntacticClassificationsTripleSlash13.ts

@@ -0,0 +1,16 @@
+/// <reference path="fourslash.ts"/>
+
+//// /// <reference path="./module.ts" /> trailing
+
+var c = classification;
+verify.syntacticClassificationsAre(
+    c.comment("/// "),
+    c.punctuation("<"),
+    c.jsxSelfClosingTagName("reference"),
+    c.comment(" "),
+    c.jsxAttribute("path"),
+    c.operator("="),
+    c.jsxAttributeStringLiteralValue("\"./module.ts\""),
+    c.comment(" "),
+    c.punctuation("/>"),
+    c.comment(" trailing"));

tests/cases/fourslash/syntacticClassificationsTripleSlash14.ts

@@ -0,0 +1,7 @@
+/// <reference path="fourslash.ts"/>
+
+//// /// nonElement
+
+var c = classification;
+verify.syntacticClassificationsAre(
+    c.comment("/// nonElement"));

tests/cases/fourslash/syntacticClassificationsTripleSlash15.ts

@@ -0,0 +1,25 @@
+/// <reference path="fourslash.ts"/>
+
+//// /// <reference path="./module1.ts" />
+//// /// <reference path="./module2.ts" />
+
+var c = classification;
+verify.syntacticClassificationsAre(
+    c.comment("/// "),
+    c.punctuation("<"),
+    c.jsxSelfClosingTagName("reference"),
+    c.comment(" "),
+    c.jsxAttribute("path"),
+    c.operator("="),
+    c.jsxAttributeStringLiteralValue("\"./module1.ts\""),
+    c.comment(" "),
+    c.punctuation("/>"),
+    c.comment("/// "),
+    c.punctuation("<"),
+    c.jsxSelfClosingTagName("reference"),
+    c.comment(" "),
+    c.jsxAttribute("path"),
+    c.operator("="),
+    c.jsxAttributeStringLiteralValue("\"./module2.ts\""),
+    c.comment(" "),
+    c.punctuation("/>"));

tests/cases/fourslash/syntacticClassificationsTripleSlash16.ts

@@ -0,0 +1,17 @@
+/// <reference path="fourslash.ts"/>
+
+//// /// <reference path="./module.ts" />
+//// 1
+
+var c = classification;
+verify.syntacticClassificationsAre(
+    c.comment("/// "),
+    c.punctuation("<"),
+    c.jsxSelfClosingTagName("reference"),
+    c.comment(" "),
+    c.jsxAttribute("path"),
+    c.operator("="),
+    c.jsxAttributeStringLiteralValue("\"./module.ts\""),
+    c.comment(" "),
+    c.punctuation("/>"),
+    c.numericLiteral("1"));

tests/cases/fourslash/syntacticClassificationsTripleSlash2.ts

@@ -0,0 +1,16 @@
+/// <reference path="fourslash.ts"/>
+
+//// ///<reference path = "./module.ts"/>
+
+var c = classification;
+verify.syntacticClassificationsAre(
+    c.comment("///"),
+    c.punctuation("<"),
+    c.jsxSelfClosingTagName("reference"),
+    c.comment(" "),
+    c.jsxAttribute("path"),
+    c.comment(" "),
+    c.operator("="),
+    c.comment(" "),
+    c.jsxAttributeStringLiteralValue("\"./module.ts\""),
+    c.punctuation("/>"));