新增调试信息

libcore/node_modules/catharsis/bin/parse.js

@@ -0,0 +1,55 @@
+#!/usr/bin/env node
+
+// Command-line tool that parses a type expression and dumps a JSON version of the parse tree.
+const catharsis = require('../catharsis');
+const path = require('path');
+const util = require('util');
+
+const command = path.basename(process.argv[1]);
+const typeExpression = process.argv[2];
+const opts = {
+    describe: false,
+    jsdoc: false
+};
+let parsedType;
+
+function usage() {
+    console.log(util.format('Usage:\n    %s typeExpression [--jsdoc] [--describe]', command));
+}
+
+function done(err) {
+    /* eslint-disable no-process-exit */
+    process.exit(err === undefined ? 0 : err);
+    /* eslint-enable no-process-exit */
+}
+
+process.argv.slice(3).forEach(arg => {
+    const parsedArg = arg.replace(/^-{2}/, '');
+
+    if (opts[parsedArg] !== undefined) {
+        opts[parsedArg] = true;
+    } else {
+        console.error('Unknown option "%s"', arg);
+        usage();
+        done(1);
+    }
+});
+
+if (!typeExpression) {
+    usage();
+    done(1);
+} else {
+    try {
+        parsedType = catharsis.parse(typeExpression, opts);
+        if (opts.describe) {
+            parsedType = catharsis.describe(parsedType);
+        }
+    } catch (e) {
+        console.error(util.format('Unable to parse "%s" (exception follows):', typeExpression));
+        console.error(e.stack || e.message);
+        done(1);
+    }
+
+    console.log(JSON.stringify(parsedType, null, 2));
+    done();
+}