@ -15,11 +15,13 @@ using System.Runtime.Serialization;
@@ -15,11 +15,13 @@ using System.Runtime.Serialization;
using System.Text ;
using System.Windows.Markup ;
using System.Xml ;
using System.Reflection ;
namespace ICSharpCode.WpfDesign.XamlDom
{
/// <summary>
/// Tokenizer for markup extension attributes.
/// [MS-XAML 6.6.7.1]
/// </summary>
sealed class MarkupExtensionTokenizer
{
@ -69,10 +71,6 @@ namespace ICSharpCode.WpfDesign.XamlDom
@@ -69,10 +71,6 @@ namespace ICSharpCode.WpfDesign.XamlDom
AddToken ( MarkupExtensionTokenKind . Comma , "," ) ;
pos + + ;
break ;
case '{' :
AddToken ( MarkupExtensionTokenKind . OpenBrace , "{" ) ;
pos + + ;
break ;
default :
MembernameOrString ( ) ;
break ;
@ -97,7 +95,7 @@ namespace ICSharpCode.WpfDesign.XamlDom
@@ -97,7 +95,7 @@ namespace ICSharpCode.WpfDesign.XamlDom
ConsumeWhitespace ( ) ;
} else {
int braceTotal = 0 ;
while ( braceTotal > = 0 ) {
while ( true ) {
CheckNotEOF ( ) ;
switch ( text [ pos ] ) {
case '\\' :
@ -110,20 +108,21 @@ namespace ICSharpCode.WpfDesign.XamlDom
@@ -110,20 +108,21 @@ namespace ICSharpCode.WpfDesign.XamlDom
braceTotal + + ;
break ;
case '}' :
if ( braceTotal ! = 0 ) {
b . Append ( text [ pos + + ] ) ;
}
if ( braceTotal = = 0 ) goto stop ;
b . Append ( text [ pos + + ] ) ;
braceTotal - - ;
break ;
case ',' :
case '=' :
braceTotal = - 1 ;
if ( braceTotal = = 0 ) goto stop ;
b . Append ( text [ pos + + ] ) ;
break ;
default :
b . Append ( text [ pos + + ] ) ;
break ;
}
}
stop : ;
}
CheckNotEOF ( ) ;
string valueText = b . ToString ( ) ;
@ -219,109 +218,106 @@ namespace ICSharpCode.WpfDesign.XamlDom
@@ -219,109 +218,106 @@ namespace ICSharpCode.WpfDesign.XamlDom
}
}
/// <summary>
/// [MS-XAML 6.6.7.2]
/// </summary>
static class MarkupExtensionParser
{
public static MarkupExtension ConstructMarkupExtension ( string attributeText , XamlObject containingObject , XamlTypeResolverProvider typeResolver )
public static XamlObject Parse ( string text , XamlObject parent , XmlAttribute attribute )
{
if ( containingObject = = null )
throw new ArgumentNullException ( "containingObject" ) ;
Debug . WriteLine ( "ConstructMarkupExtension " + attributeText ) ;
List < MarkupExtensionToken > markupExtensionTokens = MarkupExtensionTokenizer . Tokenize ( attributeText ) ;
if ( markupExtensionTokens . Count < 3
| | markupExtensionTokens [ 0 ] . Kind ! = MarkupExtensionTokenKind . OpenBrace
| | markupExtensionTokens [ 1 ] . Kind ! = MarkupExtensionTokenKind . TypeName
| | markupExtensionTokens [ markupExtensionTokens . Count - 1 ] . Kind ! = MarkupExtensionTokenKind . CloseBrace )
var tokens = MarkupExtensionTokenizer . Tokenize ( text ) ;
if ( tokens . Count < 3
| | tokens [ 0 ] . Kind ! = MarkupExtensionTokenKind . OpenBrace
| | tokens [ 1 ] . Kind ! = MarkupExtensionTokenKind . TypeName
| | tokens [ tokens . Count - 1 ] . Kind ! = MarkupExtensionTokenKind . CloseBrace )
{
throw new XamlMarkupExtensionParseException ( "Invalid markup extension" ) ;
}
string typeName = markupExtensionTokens [ 1 ] . Value ;
var typeResolver = parent . ServiceProvider . Resolver ;
string typeName = tokens [ 1 ] . Value ;
Type extensionType = typeResolver . Resolve ( typeName + "Extension" ) ;
if ( extensionType = = null ) extensionType = typeResolver . Resolve ( typeName ) ;
if ( extensionType = = null | | ! typeof ( MarkupExtension ) . IsAssignableFrom ( extensionType ) ) {
throw new XamlMarkupExtensionParseException ( "Unknown markup extension " + typeName + "Extension" ) ;
}
if ( extensionType = = typeof ( TypeExtension ) )
extensionType = typeof ( MyTypeExtension ) ;
if ( extensionType = = typeof ( System . Windows . StaticResourceExtension ) )
extensionType = typeof ( MyStaticResourceExtension ) ;
List < string > positionalArgs = new List < string > ( ) ;
List < KeyValuePair < string , string > > namedArgs = new List < KeyValuePair < string , string > > ( ) ;
for ( int i = 2 ; i < markupEx tensionT okens. Count - 1 ; i + + ) {
if ( markupEx tensionT okens[ i ] . Kind = = MarkupExtensionTokenKind . String ) {
positionalArgs . Add ( markupEx tensionT okens[ i ] . Value ) ;
} else if ( markupEx tensionT okens[ i ] . Kind = = MarkupExtensionTokenKind . Membername ) {
if ( markupEx tensionT okens[ i + 1 ] . Kind ! = MarkupExtensionTokenKind . Equals
| | markupEx tensionT okens[ i + 2 ] . Kind ! = MarkupExtensionTokenKind . String )
for ( int i = 2 ; i < tokens . Count - 1 ; i + + ) {
if ( tokens [ i ] . Kind = = MarkupExtensionTokenKind . String ) {
positionalArgs . Add ( tokens [ i ] . Value ) ;
} else if ( tokens [ i ] . Kind = = MarkupExtensionTokenKind . Membername ) {
if ( tokens [ i + 1 ] . Kind ! = MarkupExtensionTokenKind . Equals
| | tokens [ i + 2 ] . Kind ! = MarkupExtensionTokenKind . String )
{
throw new XamlMarkupExtensionParseException ( "Invalid markup extension" ) ;
}
namedArgs . Add ( new KeyValuePair < string , string > ( markupExtensionTokens [ i ] . Value ,
markupExtensionTokens [ i + 2 ] . Value ) ) ;
namedArgs . Add ( new KeyValuePair < string , string > ( tokens [ i ] . Value , tokens [ i + 2 ] . Value ) ) ;
i + = 2 ;
}
}
// Find the constructor with positionalArgs.Count arguments
var ctors = extensionType . GetConstructors ( ) . Where ( c = > c . GetParameters ( ) . Length = = positionalArgs . Count ) . ToList ( ) ;
if ( ctors . Count < 1 )
throw new XamlMarkupExtensionParseException ( "No constructor for " + extensionType . FullName + " found that takes " + positionalArgs . Count + " arguments" ) ;
if ( ctors . Count > 1 )
throw new XamlMarkupExtensionParseException ( "Multiple constructors for " + extensionType . FullName + " found that take " + positionalArgs . Count + " arguments" ) ;
var ctorParameters = ctors [ 0 ] . GetParameters ( ) ;
object [ ] ctorArguments = new object [ positionalArgs . Count ] ;
for ( int i = 0 ; i < ctorArguments . Length ; i + + ) {
Type parameterType = ctorParameters [ i ] . ParameterType ;
TypeConverter c = XamlNormalPropertyInfo . GetCustomTypeConverter ( parameterType )
? ? TypeDescriptor . GetConverter ( parameterType ) ;
ctorArguments [ i ] = XamlTextValue . AttributeTextToObject ( positionalArgs [ i ] ,
containingObject ,
c ) ;
throw new XamlMarkupExtensionParseException ( "No constructor for " +
extensionType . FullName + " found that takes " + positionalArgs . Count + " arguments" ) ;
if ( ctors . Count > 1 ) {
Debug . WriteLine ( "Multiple constructors for " +
extensionType . FullName + " found that take " + positionalArgs . Count + " arguments" ) ;
}
MarkupExtension result = ( MarkupExtension ) ctors [ 0 ] . Invoke ( ctorArguments ) ;
foreach ( var pair in namedArgs ) {
string memberName = pair . Key ;
if ( memberName . Contains ( "." ) ) {
throw new NotImplementedException ( ) ;
} else {
if ( memberName . Contains ( ":" ) )
memberName = memberName . Substring ( memberName . IndexOf ( ':' ) + 1 ) ;
var property = extensionType . GetProperty ( memberName ) ;
if ( property = = null )
throw new XamlMarkupExtensionParseException ( "Property not found: " + extensionType . FullName + "." + memberName ) ;
TypeConverter c = TypeDescriptor . GetConverter ( property . PropertyType ) ;
object propValue = XamlTextValue . AttributeTextToObject ( pair . Value ,
containingObject ,
c ) ;
property . SetValue ( result , propValue , null ) ;
var ctor = ctors [ 0 ] ;
var defaultCtor = extensionType . GetConstructor ( Type . EmptyTypes ) ;
bool mappingToProperties = defaultCtor ! = null ;
List < PropertyInfo > map = new List < PropertyInfo > ( ) ;
if ( mappingToProperties ) {
foreach ( var param in ctor . GetParameters ( ) ) {
var prop = extensionType . GetProperty ( param . Name , BindingFlags . Public | BindingFlags . Instance | BindingFlags . IgnoreCase ) ;
if ( prop = = null ) {
mappingToProperties = false ;
break ;
}
map . Add ( prop ) ;
}
}
return result ;
}
sealed class MyTypeExtension : TypeExtension
{
public MyTypeExtension ( ) { }
public MyTypeExtension ( string typeName ) : base ( typeName ) { }
}
sealed class MyStaticResourceExtension : System . Windows . StaticResourceExtension
{
public MyStaticResourceExtension ( ) { }
public MyStaticResourceExtension ( object resourceKey ) : base ( resourceKey ) { }
public override object ProvideValue ( IServiceProvider serviceProvider )
{
XamlTypeResolverProvider xamlTypeResolver = ( XamlTypeResolverProvider ) serviceProvider . GetService ( typeof ( XamlTypeResolverProvider ) ) ;
if ( xamlTypeResolver = = null )
throw new XamlLoadException ( "XamlTypeResolverProvider not found." ) ;
return xamlTypeResolver . FindResource ( this . ResourceKey ) ;
object instance ;
if ( mappingToProperties ) {
instance = defaultCtor . Invoke ( null ) ;
} else {
var ctorParamsInfo = ctor . GetParameters ( ) ;
var ctorParams = new object [ ctorParamsInfo . Length ] ;
for ( int i = 0 ; i < ctorParams . Length ; i + + ) {
var paramType = ctorParamsInfo [ i ] . ParameterType ;
ctorParams [ i ] = XamlParser . CreateObjectFromAttributeText ( positionalArgs [ i ] , paramType , parent ) ;
}
instance = ctor . Invoke ( ctorParams ) ;
//TODO
//XamlObject.ConstructorArgsProperty - args collection
//Reinvoke ctor when needed
}
XamlObject result = parent . OwnerDocument . CreateObject ( instance ) ;
if ( attribute ! = null ) result . XmlAttribute = attribute ;
result . ParentObject = parent ;
if ( mappingToProperties ) {
for ( int i = 0 ; i < positionalArgs . Count ; i + + ) {
var a = parent . OwnerDocument . XmlDocument . CreateAttribute ( map [ i ] . Name ) ;
a . Value = positionalArgs [ i ] ;
XamlParser . ParseObjectAttribute ( result , a , false ) ;
}
}
foreach ( var pair in namedArgs ) {
var a = parent . OwnerDocument . XmlDocument . CreateAttribute ( pair . Key ) ;
a . Value = pair . Value ;
XamlParser . ParseObjectAttribute ( result , a , false ) ;
}
return result ;
}
}
}
Ivan Shumilin
17 years ago