71 lines
2.2 KiB
TypeScript
71 lines
2.2 KiB
TypeScript
import * as vscode from 'vscode';
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import * as data from '../strings/resources.json';
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// create an empty decorator type (no need for border around the opcode nor different background color)
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// this is just to enable hover.
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const opcodesDecorationType = vscode.window.createTextEditorDecorationType({ });
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export function activate(context: vscode.ExtensionContext)
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{
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initializeOpcodesRegex();
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let activeEditor = vscode.window.activeTextEditor;
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if (activeEditor) {
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triggerUpdateDecorations(activeEditor);
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}
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vscode.window.onDidChangeActiveTextEditor(editor => {
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activeEditor = editor;
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if (editor) {
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triggerUpdateDecorations(activeEditor);
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}
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}, null, context.subscriptions);
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vscode.workspace.onDidChangeTextDocument(event => {
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if (activeEditor && event.document === activeEditor.document) {
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triggerUpdateDecorations(activeEditor);
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}
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}, null, context.subscriptions);
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}
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var _regExp: RegExp;
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function initializeOpcodesRegex() {
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let r : string = "\\b(";
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for (var prop in data) {
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if (prop != "--^") {
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r += prop + "|";
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}
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}
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// The last '|(--\\^)' group below is the ELUP synomym,
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// not considered a word per regex standards, so not in \b boundaries group.
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_regExp = new RegExp(r.substr(0, r.length - 1) + ")\\b|(--\\^)", 'gi');
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}
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let _activeEditor: vscode.TextEditor;
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var _timeout = null;
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function triggerUpdateDecorations(activeEditor: vscode.TextEditor) : NodeJS.Timer {
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_activeEditor = activeEditor;
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if (_timeout) {
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clearTimeout(_timeout);
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}
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_timeout = setTimeout(updateDecorations, 500);
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return _timeout;
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}
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function updateDecorations() {
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if (!_activeEditor) {
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return;
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}
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const text = _activeEditor.document.getText();
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const opcodes: vscode.DecorationOptions[] = [];
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let match;
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while (match = _regExp.exec(text)) {
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const startPos = _activeEditor.document.positionAt(match.index);
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const endPos = _activeEditor.document.positionAt(match.index + match[0].length);
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const decoration = { range: new vscode.Range(startPos, endPos), hoverMessage: data[match[0].toUpperCase()] };
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opcodes.push(decoration);
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}
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if (opcodes.length > 0) {
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_activeEditor.setDecorations(opcodesDecorationType, opcodes);
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}
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}
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