private void performVariableDeclarationBindings(
final JSCode code, final boolean configurableBindings) {
List<VariableDeclaration> decls = code.getVariableDeclarations();
EnvironmentRecord env = this.variableEnvironment.getRecord();
for (VariableDeclaration decl : decls) {
String identifier = decl.getIdentifier();
if (!env.hasBinding(this, identifier)) {
env.createMutableBinding(this, identifier, configurableBindings);
env.setMutableBinding(this, identifier, Types.UNDEFINED, code.isStrict());
}
}
}
private void performFunctionDeclarationBindings(
final JSCode code, final boolean configurableBindings) {
// 10.5 Function Declaration Binding
List<FunctionDeclaration> decls = code.getFunctionDeclarations();
EnvironmentRecord env = this.variableEnvironment.getRecord();
for (FunctionDeclaration each : decls) {
String identifier = each.getIdentifier();
if (!env.hasBinding(this, identifier)) {
env.createMutableBinding(this, identifier, configurableBindings);
} else if (env.isGlobal()) {
JSObject globalObject = ((ObjectEnvironmentRecord) env).getBindingObject();
PropertyDescriptor existingProp =
(PropertyDescriptor) globalObject.getProperty(this, identifier);
if (existingProp.isConfigurable()) {
PropertyDescriptor newProp =
new PropertyDescriptor() {
{
set("Value", Types.UNDEFINED);
set("Writable", true);
set("Enumerable", true);
set("Configurable", configurableBindings);
}
};
globalObject.defineOwnProperty(this, identifier, newProp, true);
} else if (existingProp.isAccessorDescriptor()
|| (!existingProp.isWritable() && !existingProp.isEnumerable())) {
throw new ThrowException(
this, createTypeError("unable to bind function '" + identifier + "'"));
}
}
JSFunction function =
getCompiler()
.compileFunction(
this, identifier, each.getFormalParameters(), each.getBlock(), each.isStrict());
function.setDebugContext(identifier);
env.setMutableBinding(this, identifier, function, code.isStrict());
}
}
