public bool TryParse(string sourceText, out MarkupExtension graph)
{
graph = null;
try
{
ParseTree tree = this.parser.Parse(sourceText);
#if DEBUG
// Save result tree for debugging purposes.
this.LastParseTree = tree;
this.LastException = null;
#endif
if (tree.Status == ParseTreeStatus.Parsed)
{
graph = MarkupExtension.Create(tree.Root);
return(true);
}
}
#if DEBUG
catch (Exception ex)
{
this.LastParseTree = null;
this.LastException = ex;
}
#else
catch
{
// ignored
}
#endif
return(false);
}
/// <summary>
/// Format markup extension and return elements as formatted lines with "local" indention.
/// Indention from previous element/attribute/tags must be applied separately
/// </summary>
/// <param name="markupExtension"></param>
/// <returns></returns>
public IEnumerable<string> Format(MarkupExtension markupExtension)
{
var formatter = (this.singleLineTypes.Contains(markupExtension.TypeName))
? this.singleLineFormatter
: this.multiLineFormatter;
return formatter.Format(markupExtension);
}
public bool TryParse(string sourceText, out MarkupExtension graph)
{
graph = null;
try
{
ParseTree tree = this.parser.Parse(sourceText);
#if DEBUG
// Save result tree for debugging purposes.
this.LastParseTree = tree;
this.LastException = null;
#endif
if (tree.Status == ParseTreeStatus.Parsed)
{
graph = MarkupExtension.Create(tree.Root);
return true;
}
}
#if DEBUG
catch (Exception ex)
{
this.LastParseTree = null;
this.LastException = ex;
}
#else
catch
{
// ignored
}
#endif
return false;
}
public AttributeInfo(string name, string value, AttributeOrderRule orderRule, MarkupExtension markupExtension)
{
this.Name = name;
this.Value = value;
this.OrderRule = orderRule;
this.MarkupExtension = markupExtension;
}
public void TestSignificantSpacing()
{
var sourceText = @" { Binding StringFormat = {} {0}\ , Mode = OneWay } ";
var expected = new MarkupExtension(
"Binding",
new NamedArgument("StringFormat", @"{} {0}\ "),
new NamedArgument("Mode", "OneWay"));
this.ParseAndAssertObjectGraph(sourceText, expected);
}
public void TestHelloworldFoo1Bar42_spaced()
{
var sourceText = " { Hello world , foo = 1 , bar = 42 } ";
var expected = new MarkupExtension(
"Hello",
new PositionalArgument("world"),
new NamedArgument("foo", "1"),
new NamedArgument("bar", "42"));
this.ParseAndAssertObjectGraph(sourceText, expected);
}
public void TestBindingHelloFooBar()
{
var sourceText = "{Binding Hello, foo,bar}";
var expected = new MarkupExtension(
"Binding",
new PositionalArgument("Hello"),
new PositionalArgument("foo"),
new PositionalArgument("bar"));
this.ParseAndAssertObjectGraph(sourceText, expected);
}
private static IEnumerable <Argument> GetArguments(IEnumerable <ParseTreeNode> nodes)
{
foreach (var node in nodes)
{
var argument = PositionalArgument.Create(node) ?? (Argument)NamedArgument.Create(node);
if (argument != null)
{
yield return(argument);
}
else
{
// Unwrap argument.
foreach (var markupExtensionArgument in MarkupExtension.GetArguments(node.ChildNodes))
{
yield return(markupExtensionArgument);
}
}
}
}
public void TestNestedBinding()
{
var sourceText = "{Binding ActualHeight, Mode=OneWay, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type gpc:MainWindow}}}";
var expected = new MarkupExtension(
"Binding",
new PositionalArgument("ActualHeight"),
new NamedArgument("Mode", "OneWay"),
new NamedArgument(
"RelativeSource",
new MarkupExtension(
"RelativeSource",
new PositionalArgument("FindAncestor"),
new NamedArgument(
"AncestorType",
new MarkupExtension("x:Type", new PositionalArgument("gpc:MainWindow"))))));
this.ParseAndAssertObjectGraph(sourceText, expected);
}
private void ParseAndAssertObjectGraph(string sourceText, MarkupExtension expected)
{
IMarkupExtensionParser markupExtensionParser = new MarkupExtensionParser();
MarkupExtension actual;
var result = markupExtensionParser.TryParse(sourceText, out actual);
Assert.That(result, Is.True);
Assert.That(actual, Is.Not.Null);
var compareLogic = new CompareLogic();
var compareResult = compareLogic.Compare(expected, actual);
Assert.That(compareResult.AreEqual, Is.True, compareResult.DifferencesString);
}
public void TestEscapedBraces2()
{
var sourceText = @"{Binding Value, StringFormat={}{0:N2}}";
var expected = new MarkupExtension(
"Binding",
new PositionalArgument("Value"),
new NamedArgument("StringFormat", "{}{0:N2}"));
this.ParseAndAssertObjectGraph(sourceText, expected);
}
public void TestNestedBindingWithBraceFormat()
{
var sourceText = @"{Binding Title,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type UserControl}},
StringFormat={}{0}Now{{0}} - {0}}";
var expected = new MarkupExtension(
"Binding",
new PositionalArgument("Title"),
new NamedArgument(
"RelativeSource",
new MarkupExtension(
"RelativeSource",
new PositionalArgument("FindAncestor"),
new NamedArgument(
"AncestorType",
new MarkupExtension("x:Type", new PositionalArgument("UserControl"))))),
new NamedArgument("StringFormat", "{}{0}Now{{0}} - {0}"));
this.ParseAndAssertObjectGraph(sourceText, expected);
}
public void TestHello()
{
var sourceText = "{Hello}";
var expected = new MarkupExtension("Hello");
this.ParseAndAssertObjectGraph(sourceText, expected);
}
public void TestNestedBinding2()
{
var sourceText = @"{DynamicResource {x:Static SystemColors.ControlTextBrushKey},
ResourceKey={x:Static SystemColors.ControlTextBrushKey}}";
var expected = new MarkupExtension(
"DynamicResource",
new PositionalArgument(new MarkupExtension(
"x:Static",
new PositionalArgument("SystemColors.ControlTextBrushKey"))),
new NamedArgument(
"ResourceKey",
new MarkupExtension(
"x:Static",
new PositionalArgument("SystemColors.ControlTextBrushKey"))));
this.ParseAndAssertObjectGraph(sourceText, expected);
}
public IEnumerable<string> Format(MarkupExtension markupExtension)
{
return markupExtension.Arguments.Any()
? this.Format($"{{{markupExtension.TypeName} ", this.Format(markupExtension.Arguments), "}")
: new string[] { $"{{{markupExtension.TypeName}}}" };
}
/// <summary>
/// Format markup extension on a single line.
/// </summary>
/// <param name="markupExtension"></param>
/// <returns></returns>
public string FormatSingleLine(MarkupExtension markupExtension)
{
return this.singleLineFormatter.Format(markupExtension).Single();
}
public void TestHelloWorld42()
{
var sourceText = "{Hello world=42}";
var expected = new MarkupExtension("Hello", new NamedArgument("world", "42"));
this.ParseAndAssertObjectGraph(sourceText, expected);
}
public static Value Create(ParseTreeNode node)
{
return(LiteralValue.Create(node) ?? (Value)MarkupExtension.Create(node));
}