protected override ExpressionResult EvaluateInternal(EvaluationContext context)
{
var engine = context.Engine;
var env = engine.ExecutionContext.LexicalEnvironment;
var strict = StrictModeScope.IsStrictModeCode;
var identifierEnvironment = JintEnvironment.TryGetIdentifierEnvironmentWithBinding(env, _expressionName, out var temp)
? temp
: JsValue.Undefined;
return(NormalCompletion(engine._referencePool.Rent(identifierEnvironment, _expressionName.StringValue, strict, thisValue: null)));
}
internal static ExpressionResult?AssignToIdentifier(
EvaluationContext context,
JintIdentifierExpression left,
JintExpression right,
bool hasEvalOrArguments)
{
var engine = context.Engine;
var env = engine.ExecutionContext.LexicalEnvironment;
var strict = StrictModeScope.IsStrictModeCode;
if (JintEnvironment.TryGetIdentifierEnvironmentWithBinding(
env,
left._expressionName,
out var environmentRecord))
{
if (strict && hasEvalOrArguments)
{
ExceptionHelper.ThrowSyntaxError(engine.Realm);
}
var completion = right.GetValue(context);
if (completion.IsAbrupt())
{
return(completion);
}
var rval = completion.Value.Clone();
if (right._expression.IsFunctionDefinition())
{
((FunctionInstance)rval).SetFunctionName(left._expressionName.StringValue);
}
environmentRecord.SetMutableBinding(left._expressionName, rval, strict);
return(new Completion(CompletionType.Normal, rval, default));
}
return(null);
}