public ExecutionContext createFunctionExecutionContext(
Object functionReference, JSFunction function, Object thisArg, Object... arguments) {
// 10.4.3
Object thisBinding = null;
if (function.isStrict()) {
thisBinding = thisArg;
} else {
if (thisArg == null || thisArg == Types.NULL || thisArg == Types.UNDEFINED) {
thisBinding = this.getLexicalEnvironment().getGlobalObject();
} else if (!(thisArg instanceof JSObject)) {
// thisBinding = Types.toObject(this, thisArg);
thisBinding = Types.toThisObject(this, thisArg);
} else {
thisBinding = thisArg;
}
}
LexicalEnvironment scope = function.getScope();
LexicalEnvironment localEnv = LexicalEnvironment.newDeclarativeEnvironment(scope);
ExecutionContext context =
new ExecutionContext(this, localEnv, localEnv, thisBinding, function.isStrict());
context.performDeclarationBindingInstantiation(function, arguments);
context.fileName = function.getFileName();
// System.err.println( "debug null: " + ( function.getDebugContext() == null ? function : "not
// null") );
context.debugContext = function.getDebugContext();
context.functionReference = functionReference;
return context;
}
