public void mungeSymboltree(boolean analyzed) {
if (!munge) {
return;
}
// One problem with obfuscation resides in the use of undeclared
// and un-namespaced global symbols that are 3 characters or less
// in length. Here is an example:
//
// var declaredGlobalVar;
//
// function declaredGlobalFn() {
// var localvar;
// localvar = abc; // abc is an undeclared global symbol
// }
//
// In the example above, there is a slim chance that localvar may be
// munged to 'abc', conflicting with the undeclared global symbol
// abc, creating a potential bug. The following code detects such
// global symbols. This must be done AFTER the entire file has been
// parsed, and BEFORE munging the symbol tree. Note that declaring
// extra symbols in the global scope won't hurt.
//
// Note: Since we go through all the tokens to do this, we also use
// the opportunity to count how many times each identifier is used.
offset = 0;
braceNesting = 0;
scopes.clear();
mode = CHECKING_SYMBOL_TREE;
parseScope(globalScope);
if (analyzed) { // 进行了分析，说明用户想主动输入混淆变量，优先使用用户输入的混淆变量
manMung();
}
globalScope.munge();
}
