Clone engine262 in /engine262

2026-08-19 00:31:34 +00:00 · 2020-09-07 10:19:00 +05:30
parent 7688de2e5c
commit 66c1aeb9e0
313 changed files with 46014 additions and 0 deletions
@@ -0,0 +1,76 @@
+'use strict';
+
+function snekparse(args) {
+  if (typeof args === 'string') {
+    args = args.split(' ');
+  }
+  const argv = [];
+  for (let i = 0; i < args.length; i += 1) {
+    const arg = args[i];
+    if (/^--.+=/.test(arg)) {
+      const match = arg.match(/^--([^=]+)=([\s\S]*)$/);
+      argv[match[1]] = match[2];
+    } else if (/^--no-.+/.test(arg)) {
+      argv[arg.match(/^--no-(.+)/)[1]] = false;
+    } else if (/^--.+/.test(arg)) {
+      const key = arg.match(/^--(.+)/)[1];
+      const next = args[i + 1];
+      if (typeof next !== 'undefined' && !/^-/.test(next)) {
+        argv[key] = next;
+      } else if (/^(true|false)$/.test(next)) {
+        argv[key] = next === 'true';
+      } else {
+        argv[key] = true;
+      }
+    } else if (/^-[^-]+/.test(arg)) {
+      const letters = arg.slice(1, -1).split('');
+      let broken = false;
+      for (const j of letters) {
+        const next = arg.slice(j + 2);
+
+        if (next === '-') {
+          argv[letters[j]] = next;
+          continue;
+        }
+
+        if (/[A-Za-z]/.test(letters[j]) && /=/.test(next)) {
+          argv[letters[j]] = next.split('=')[1];
+          broken = true;
+          break;
+        }
+
+        if (/[A-Za-z]/.test(letters[j])
+            && /-?\d+(\.\d*)?(e-?\d+)?$/.test(next)) {
+          argv[letters[j]] = next;
+          broken = true;
+          break;
+        }
+
+        if (letters[j + 1] && letters[j + 1].match(/\W/)) {
+          argv[letters[j]] = arg.slice(j + 2);
+          broken = true;
+          break;
+        } else {
+          argv[letters[j]] = true;
+        }
+      }
+
+      const key = arg.slice(-1)[0];
+      if (!broken && key !== '-') {
+        if (args[i + 1] && !/^(-|--)[^-]/.test(args[i + 1])) {
+          argv[key] = args[i + 1];
+        } else if (args[i + 1] && /true|false/.test(args[i + 1])) {
+          argv[key] = args[i + 1] === 'true';
+        } else {
+          argv[key] = true;
+        }
+      }
+    } else {
+      argv.push(arg);
+    }
+  }
+
+  return argv;
+}
+
+module.exports = snekparse;