private ParametrizedCode FormatJavascript(JsExpression node, bool allowObservableResult = true)
{
var expr = new JsParenthesizedExpression(node.Clone());
expr.AcceptVisitor(new KnockoutObservableHandlingVisitor(allowObservableResult));
JavascriptNullCheckAdder.AddNullChecks(expr);
expr = new JsParenthesizedExpression((JsExpression)JsTemporaryVariableResolver.ResolveVariables(expr.Expression.Detach()));
return((StartsWithStatementLikeExpression(expr.Expression) ? expr : expr.Expression).FormatParametrizedScript(niceMode: configuration.Debug));
}
public string CompileBinding(Func<Dictionary<string, Expression>, Expression> expr, Type[] contexts)
{
var context = DataContextStack.Create(contexts.FirstOrDefault() ?? typeof(object), extensionParameters: new BindingExtensionParameter[]{
new BindingPageInfoExtensionParameter()
});
for (int i = 1; i < contexts.Length; i++)
{
context = DataContextStack.Create(contexts[i], context);
}
var expressionTree = expr(BindingExpressionBuilder.GetParameters(context).ToDictionary(e => e.Name, e => (Expression)e));
var configuration = DotvvmTestHelper.CreateConfiguration();
var jsExpression = new JsParenthesizedExpression(configuration.ServiceProvider.GetRequiredService<JavascriptTranslator>().CompileToJavascript(expressionTree, context));
jsExpression.AcceptVisitor(new KnockoutObservableHandlingVisitor(true));
JsTemporaryVariableResolver.ResolveVariables(jsExpression);
return JavascriptTranslator.FormatKnockoutScript(jsExpression.Expression);
}
public string CompileBinding(string expression, Type[] contexts, Type expectedType)
{
var context = DataContextStack.Create(contexts.FirstOrDefault() ?? typeof(object), extensionParameters: new BindingExtensionParameter[] {
new BindingPageInfoExtensionParameter(),
}.Concat(configuration.Markup.DefaultExtensionParameters).ToArray());
for (int i = 1; i < contexts.Length; i++)
{
context = DataContextStack.Create(contexts[i], context);
}
var parser = new BindingExpressionBuilder();
var expressionTree = TypeConversion.ImplicitConversion(parser.Parse(expression, context, BindingParserOptions.Create <ValueBindingExpression>()), expectedType, true, true);
var jsExpression = new JsParenthesizedExpression(configuration.ServiceProvider.GetRequiredService <JavascriptTranslator>().CompileToJavascript(expressionTree, context));
jsExpression.AcceptVisitor(new KnockoutObservableHandlingVisitor(true));
JsTemporaryVariableResolver.ResolveVariables(jsExpression);
return(JavascriptTranslator.FormatKnockoutScript(jsExpression.Expression));
}
private JsNode Binary(OperatorResolveResult res)
{
if (res.UserDefinedOperatorMethod != null && !Sk.UseNativeOperatorOverloads(res.UserDefinedOperatorMethod.DeclaringTypeDefinition))
{
var op2 = res.OperatorType.ExtractCompoundAssignment();
if (op2 != null)
{
var fakeRight = new OperatorResolveResult(res.Type, op2.Value, res.UserDefinedOperatorMethod, res.IsLiftedOperator, res.Operands);
var fakeAssign = Cs.Assign(res.Operands[0], fakeRight);
return(Visit(fakeAssign));
}
var fake = Cs.InvokeMethod(res.UserDefinedOperatorMethod, null, res.Operands[0], res.Operands[1]);
return(Visit(fake));
}
if (res.OperatorType == ExpressionType.Coalesce)
{
var fake = Cs.Conditional(res.Operands[0].NotEqual(Cs.Null(), Project), res.Operands[0], res.Operands[1], res.Type);
var fake2 = Visit(fake);
fake2 = new JsParenthesizedExpression {
Expression = (JsExpression)fake2
};
return(fake2);
}
var mrr = res.Operands[0] as MemberResolveResult;
if (mrr != null && mrr.Member.SymbolKind == SymbolKind.Event)
{
var pe = (IEvent)mrr.Member;
if (res.OperatorType.IsAny(ExpressionType.AddAssign, ExpressionType.SubtractAssign))
{
var accessor = res.OperatorType == ExpressionType.AddAssign ? pe.AddAccessor : pe.RemoveAccessor;
var fake = new CSharpInvocationResolveResult(mrr.TargetResult, accessor, new List <ResolveResult>
{
res.Operands[1]
});
var node6 = Visit(fake);
return(node6);
}
}
if (mrr != null && IsEntityFunctionProperty(mrr.Member, res))
{
var simpleOp = res.OperatorType.ExtractCompoundAssignment();
var pe = (IProperty)mrr.Member;
if (simpleOp != null)
{
// x.Name += "Hello" -> x.Name = x.Name + "Hello"
// x.Dic["Hello"] += 7 -> x.Dic["Hello"] = x.Dic["Hello"] + 7;
var fake = res.Operands[0].Assign(res.Operands[0].Binary(simpleOp.Value, res.Operands[1], res.Type));
var node6 = Visit(fake);
return(node6);
}
else if (res.OperatorType == ExpressionType.Assign)
{
var args = new List <ResolveResult>();
if (pe.IsIndexer)
{
var irrOp0 = (CSharpInvocationResolveResult)res.Operands[0];
args.AddRange(irrOp0.Arguments);
}
args.Add(res.Operands[1]);
var fake = new CSharpInvocationResolveResult(mrr.TargetResult, pe.Setter, args).AssociateWithOriginal(res);
var node6 = Visit(fake);
node6 = WrapSetterToReturnValueIfNeeded(res, node6);
return(node6);
}
}
if (res.Operands[0] is ConversionResolveResult && res.Operands[1] is ConstantResolveResult)
{
var leftConv = (ConversionResolveResult)res.Operands[0];
var rightConst = (ConstantResolveResult)res.Operands[1];
if (leftConv.Conversion.IsNumericConversion && leftConv.Input.Type == Cs.CharType(Project))
{
var value = ((char)(int)rightConst.ConstantValue).ToString();
var fake = Cs.Binary(leftConv.Input, res.OperatorType, Cs.Value(value, Project), leftConv.Input.Type);
return(Visit(fake));
}
}
if (res.Operands[0].Type.Kind == TypeKind.Delegate && res.Operands[1].Type.Kind == TypeKind.Delegate)
{
if (res.OperatorType.IsAny(ExpressionType.AddAssign, ExpressionType.SubtractAssign))
{
var op = res.OperatorType == ExpressionType.AddAssign ? ExpressionType.Add : ExpressionType.Subtract;
var fake = Cs.Assign(res.Operands[0], Cs.Binary(res.Operands[0], op, res.Operands[1], res.Type));
var node6 = Visit(fake);
return(node6);
}
else if (res.OperatorType.IsAny(ExpressionType.Add, ExpressionType.Subtract))
{
var combineMethod = Project.Compilation.FindType(KnownTypeCode.Delegate).GetMethods(t => t.Name == "Combine").FirstOrDefault();
var removeMethod = Project.Compilation.FindType(KnownTypeCode.Delegate).GetMethods(t => t.Name == "Remove").FirstOrDefault();
var meOp = res.OperatorType == ExpressionType.Add ? combineMethod : removeMethod;
var fake = Cs.Member(null, meOp).Invoke(res.Operands[0], res.Operands[1]);
var node6 = Visit(fake);
return(node6);
}
}
var node5 = new JsBinaryExpression {
Operator = Visit(res.OperatorType), Left = VisitExpression(res.Operands[0]), Right = VisitExpression(res.Operands[1])
};
if (res.OperatorType == ExpressionType.Equal && node5.Operator == "==")
{
var att = Compiler.GetJsExportAttribute();
if (att != null && att.UseExactEquals)
{
node5.Operator = "===";
}
}
if (res.OperatorType == ExpressionType.NotEqual && node5.Operator == "!=")
{
var att = Compiler.GetJsExportAttribute();
if (att != null && att.UseExactEquals)
{
node5.Operator = "!==";
}
}
return(node5);
}
