public static Task <bool> GetJsExpressionAndEvaluateToBoolAsync(this ReadOnlyMemory <char> expr, ScriptScopeContext scope, Action ifNone = null)
{
if (expr.IsNullOrEmpty())
{
ifNone?.Invoke();
return(TypeConstants.FalseTask);
}
var token = expr.GetCachedJsExpression(scope);
if (token == null)
{
ifNone?.Invoke();
return(TypeConstants.FalseTask);
}
return(token.EvaluateToBoolAsync(scope));
}
public static Task <object> GetJsExpressionAndEvaluateAsync(this ReadOnlyMemory <char> expr, TemplateScopeContext scope, Action ifNone = null)
{
if (expr.IsNullOrEmpty())
{
ifNone?.Invoke();
return(TypeConstants.EmptyTask);
}
var token = expr.GetCachedJsExpression(scope);
if (token == null)
{
ifNone?.Invoke();
return(TypeConstants.EmptyTask);
}
return(token.EvaluateAsync(scope));
}
public static object GetJsExpressionAndEvaluate(this ReadOnlyMemory <char> expr, ScriptScopeContext scope, Action ifNone = null)
{
if (expr.IsNullOrEmpty())
{
ifNone?.Invoke();
return(null);
}
var token = expr.GetCachedJsExpression(scope);
if (token == null)
{
ifNone?.Invoke();
return(null);
}
var result = token.Evaluate(scope);
return(result);
}
public static bool GetJsExpressionAndEvaluateToBool(this ReadOnlyMemory <char> expr, TemplateScopeContext scope, Action ifNone = null)
{
if (expr.IsNullOrEmpty())
{
ifNone?.Invoke();
return(false);
}
var token = expr.GetCachedJsExpression(scope);
if (token == null)
{
ifNone?.Invoke();
return(false);
}
var result = token.EvaluateToBool(scope);
return(result);
}
public static async Task <object> GetJsExpressionAndEvaluateAsync(this ReadOnlyMemory <char> expr, ScriptScopeContext scope, Action ifNone = null)
{
if (expr.IsNullOrEmpty())
{
ifNone?.Invoke();
return(TypeConstants.EmptyTask);
}
var token = expr.GetCachedJsExpression(scope);
if (token == null)
{
ifNone?.Invoke();
return(TypeConstants.EmptyTask);
}
var ret = await token.EvaluateAsync(scope).ConfigAwait();
return(ret == JsNull.Value
? null
: ret);
}
