release: Vs Code New Extension with layout Support

editors/vscode/src/definition.js

@@ -0,0 +1,134 @@
+"use strict";
+
+const vscode = require("vscode");
+
+const COMPONENT_DECLARATION =
+  /^\s*(component|layout)\s+([A-Za-z_$][\w$]*)\s*\{/gm;
+
+function getTagAtPosition(document, position) {
+  const range = document.getWordRangeAtPosition(
+    position,
+    /[A-Za-z_$][\w$]*/,
+  );
+
+  if (!range) {
+    return null;
+  }
+
+  const name = document.getText(range);
+
+  if (!/^[A-Z][A-Za-z0-9_$]*$/.test(name)) {
+    return null;
+  }
+
+  const line = document.lineAt(position.line).text;
+  const offset = document.offsetAt(position);
+  const lineStart = document.offsetAt(
+    new vscode.Position(position.line, 0),
+  );
+
+  const characterOffset = offset - lineStart;
+  const before = line.slice(0, characterOffset);
+  const after = line.slice(characterOffset);
+
+  const insideTag =
+    before.lastIndexOf("<") > before.lastIndexOf(">") &&
+    after.includes(">");
+
+  if (!insideTag) {
+    return null;
+  }
+
+  return {
+    name,
+    range,
+  };
+}
+
+async function findDeclaration(name) {
+  const files = await vscode.workspace.findFiles(
+    "**/*.wrn",
+    "**/{node_modules,dist,.wrnexus,.git}/**",
+  );
+
+  const matches = [];
+
+  for (const uri of files) {
+    let document;
+
+    try {
+      document = await vscode.workspace.openTextDocument(uri);
+    } catch {
+      continue;
+    }
+
+    const source = document.getText();
+
+    COMPONENT_DECLARATION.lastIndex = 0;
+
+    let match;
+
+    while ((match = COMPONENT_DECLARATION.exec(source)) !== null) {
+      const declarationName = match[2];
+
+      if (declarationName !== name) {
+        continue;
+      }
+
+      const nameOffset =
+        match.index +
+        match[0].indexOf(declarationName);
+
+      const start = document.positionAt(nameOffset);
+      const end = document.positionAt(
+        nameOffset + declarationName.length,
+      );
+
+      matches.push(
+        new vscode.Location(
+          uri,
+          new vscode.Range(start, end),
+        ),
+      );
+    }
+  }
+
+  return matches;
+}
+
+async function provideDefinition(document, position) {
+  const tag = getTagAtPosition(document, position);
+
+  if (!tag) {
+    return null;
+  }
+
+  const matches = await findDeclaration(tag.name);
+
+  if (matches.length === 0) {
+    return null;
+  }
+
+  return matches.length === 1 ? matches[0] : matches;
+}
+
+function registerDefinitionProvider(context) {
+  const disposable = vscode.languages.registerDefinitionProvider(
+    {
+      language: "wrn",
+      scheme: "file",
+    },
+    {
+      provideDefinition,
+    },
+  );
+
+  context.subscriptions.push(disposable);
+}
+
+module.exports = {
+  findDeclaration,
+  getTagAtPosition,
+  provideDefinition,
+  registerDefinitionProvider,
+};