Initial commit starting at version 10.1.8.3rc4.

1 files changed, 29 insertions, 0 deletions

diff --git a/src/common/SyntaxChecker.js b/src/common/SyntaxChecker.js
new file mode 100644
index 0000000..8646901
--- /dev/null
+++ b/src/common/SyntaxChecker.js
@@ -0,0 +1,29 @@
+class SyntaxChecker {
+  constructor() {
+    this.lastError = null;
+    this.lastFunction = null;
+    this.lastScript = "";
+  }
+  check(script) {
+    this.lastScript = script;
+    try {
+      return !!(this.lastFunction = new Function(script));
+    } catch(e) {
+       this.lastError = e;
+       this.lastFunction = null;
+     }
+     return false;
+  }
+  unquote(s, q) {
+    // check that this is really a double or a single quoted string...
+    if (s.length > 1 && s.startsWith(q) && s.endsWith(q) &&
+      // if nothing is left if you remove all he escapes and all the stuff between quotes
+      s.replace(/\\./g, '').replace(/^(['"])[^\n\r]*?\1/, '') === '') {
+      try {
+        return eval(s);
+      } catch (e) {
+      }
+    }
+    return null;
+  }
+}