public XamlIlNodeEmitResult Emit(XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
var type = TargetType.GetClrType();
var member = ResolveMember(type);
if (member is IXamlIlProperty prop)
{
codeGen.Emit(OpCodes.Call, prop.Getter);
return(XamlIlNodeEmitResult.Type(0, prop.Getter.ReturnType));
}
else if (member is IXamlIlField field)
{
if (field.IsLiteral)
{
TypeSystemHelpers.EmitFieldLiteral(field, codeGen);
}
else
{
codeGen.Emit(OpCodes.Ldsfld, field);
}
return(XamlIlNodeEmitResult.Type(0, field.FieldType));
}
else
{
throw new XamlIlLoadException(
$"Unable to resolve {Member} as static field, property, constant or enum value", this);
}
}
public XamlIlNodeEmitResult Emit(IXamlIlAstNode node, XamlIlEmitContext context, IXamlIlCodeGen codeGen)
{
if (!(node is XamlIlAstNewClrObjectNode n))
{
return(null);
}
var type = n.Type.GetClrType();
var argTypes = n.Arguments.Select(a => a.Type.GetClrType()).ToList();
var ctor = type.FindConstructor(argTypes);
if (ctor == null)
{
throw new XamlIlLoadException(
$"Unable to find public constructor for type {type.GetFqn()}({string.Join(", ", argTypes.Select(at => at.GetFqn()))})",
n);
}
for (var c = 0; c < n.Arguments.Count; c++)
{
var ctorArg = n.Arguments[c];
context.Emit(ctorArg, codeGen, ctor.Parameters[c]);
}
var gen = codeGen.Generator
.Emit(OpCodes.Newobj, ctor);
return(XamlIlNodeEmitResult.Type(type));
}
public XamlIlNodeEmitResult Emit(XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
var next = codeGen.DefineLabel();
var scopeField = context.RuntimeContext.ContextType.Fields.First(f =>
f.Name == AvaloniaXamlIlLanguage.ContextNameScopeFieldName);
using (var local = codeGen.LocalsPool.GetLocal(_types.StyledElement))
{
codeGen
.Isinst(_types.StyledElement)
.Dup()
.Stloc(local.Local)
.Brfalse(next)
.Ldloc(local.Local)
.Ldloc(context.ContextLocal)
.Ldfld(scopeField)
.EmitCall(_types.NameScopeSetNameScope, true)
.MarkLabel(next)
.Ldloc(context.ContextLocal)
.Ldfld(scopeField)
.EmitCall(_types.INameScopeComplete, true);
}
return(XamlIlNodeEmitResult.Void(1));
}
public XamlIlNodeEmitResult Emit(XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
var so = context.Configuration.WellKnownTypes.Object;
var isp = context.Configuration.TypeMappings.ServiceProvider;
var subType = context.CreateSubType("XamlIlClosure_" + Guid.NewGuid(), so);
var buildMethod = subType.DefineMethod(so, new[]
{
isp
}, "Build", true, true, false);
CompileBuilder(new XamlIlEmitContext(buildMethod.Generator, context.Configuration,
context.RuntimeContext, buildMethod.Generator.DefineLocal(context.RuntimeContext.ContextType),
(s, type) => subType.DefineSubType(type, s, false), context.Emitters));
var funcType = Type.GetClrType();
codeGen
.Ldnull()
.Ldftn(buildMethod)
.Newobj(funcType.Constructors.FirstOrDefault(ct =>
ct.Parameters.Count == 2 && ct.Parameters[0].Equals(context.Configuration.WellKnownTypes.Object)));
// Allow to save values from the parent context, pass own service provider, etc, etc
if (context.Configuration.TypeMappings.DeferredContentExecutorCustomization != null)
{
codeGen
.Ldloc(context.ContextLocal)
.EmitCall(context.Configuration.TypeMappings.DeferredContentExecutorCustomization);
}
subType.CreateType();
return(XamlIlNodeEmitResult.Type(0, funcType));
}
public XamlIlNodeEmitResult Emit(XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
// Discard the stack value we are "supposed" to manipulate
codeGen.Pop();
context.Emit(Imperative, codeGen, null);
return(XamlIlNodeEmitResult.Void(1));
}
public XamlIlNodeEmitResult Emit(IXamlIlAstNode node, XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
if (!(node is XamlIlAstNewClrObjectNode n))
{
return(null);
}
var type = n.Type.GetClrType();
var ctor = n.Constructor ?? type.FindConstructor();
if (ctor == null)
{
throw new XamlIlLoadException("Unable to find default constructor and no non-default one is specified",
n);
}
for (var c = 0; c < n.Arguments.Count; c++)
{
context.Emit(n.Arguments[c], codeGen, ctor.Parameters[c]);
}
var gen = codeGen
.Emit(OpCodes.Newobj, ctor);
return(XamlIlNodeEmitResult.Type(0, type));
}
public XamlIlNodeEmitResult Emit(XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
var exts = context.Configuration.TypeSystem.GetType("Avalonia.Controls.NameScopeExtensions");
var findNameScope = exts.FindMethod(m => m.Name == "FindNameScope");
var registerMethod = findNameScope.ReturnType.FindMethod(m => m.Name == "Register");
using (var targetLoc = context.GetLocal(context.Configuration.WellKnownTypes.Object))
using (var nameScopeLoc = context.GetLocal(findNameScope.ReturnType))
{
var exit = codeGen.DefineLabel();
codeGen
// var target = {pop}
.Stloc(targetLoc.Local)
// var scope = target.FindNameScope()
.Ldloc(targetLoc.Local)
.Castclass(findNameScope.Parameters[0])
.EmitCall(findNameScope)
.Stloc(nameScopeLoc.Local)
// if({scope} != null) goto call;
.Ldloc(nameScopeLoc.Local)
.Brfalse(exit)
.Ldloc(nameScopeLoc.Local);
context.Emit(Value, codeGen, Value.Type.GetClrType());
codeGen
.Ldloc(targetLoc.Local)
.EmitCall(registerMethod)
.MarkLabel(exit);
}
return(XamlIlNodeEmitResult.Void(1));
}
public XamlIlNodeEmitResult Emit(IXamlIlAstNode node, XamlIlEmitContext context, IXamlIlCodeGen codeGen)
{
if (!(node is XamlIlInstanceMethodCallBaseNode mc))
{
return(null);
}
for (var c = 0; c < mc.Arguments.Count; c++)
{
context.Emit(mc.Arguments[c], codeGen, mc.Method.Parameters[c]);
}
codeGen.Generator.Emit(mc.Method.IsStatic ? OpCodes.Call : OpCodes.Callvirt, mc.Method);
var isVoid = mc.Method.ReturnType.Equals(context.Configuration.WellKnownTypes.Void);
if (mc is XamlIlInstanceNoReturnMethodCallNode && !isVoid)
{
codeGen.Generator.Emit(OpCodes.Pop);
}
if (mc is XamlIlStaticReturnMethodCallNode && isVoid)
{
throw new XamlIlLoadException(
$"XamlIlStaticReturnMethodCallNode expects a value while {mc.Method.Name} returns void", node);
}
return(isVoid ? XamlIlNodeEmitResult.Void : XamlIlNodeEmitResult.Type(mc.Method.ReturnType));
}
public XamlIlNodeEmitResult Emit(XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
codeGen
.Ldloc(context.ContextLocal)
.Ldfld(context.RuntimeContext.RootObjectField);
return(XamlIlNodeEmitResult.Type(0, Type.GetClrType()));
}
public XamlIlNodeEmitResult Emit(XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
if (!XamlIlAvaloniaPropertyHelper.Emit(context, codeGen, Property))
{
throw new XamlIlLoadException(Property.Name + " is not an AvaloniaProperty", this);
}
return(XamlIlNodeEmitResult.Type(0, Type.GetClrType()));
}
public XamlIlNodeEmitResult Emit(XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
var rv = context.Emit(Value, codeGen, Local.Type);
codeGen.Emit(OpCodes.Dup);
context.StLocal(Local, codeGen);
return(XamlIlNodeEmitResult.Type(0, rv.ReturnType));
}
public XamlIlNodeEmitResult Emit(IXamlIlAstNode node, XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
if (!(node is XamlIlObjectInitializationNode init))
{
return(null);
}
var supportInitType = context.Configuration.TypeMappings.SupportInitialize;
var supportsInitialize = supportInitType != null &&
context.Configuration.TypeMappings.SupportInitialize
.IsAssignableFrom(init.Type);
if (supportsInitialize)
{
codeGen
// We need a copy for/EndInit
.Emit(OpCodes.Dup);
if (!init.SkipBeginInit)
{
codeGen
.Emit(OpCodes.Dup)
.EmitCall(supportInitType.FindMethod(m => m.Name == "BeginInit"));
}
}
var addToParentStack = context.RuntimeContext.ParentListField != null &&
!init.Type.IsValueType &&
context.GetOrCreateItem <XamlIlNeedsParentStackCache>().NeedsParentStack(node);
if (addToParentStack)
{
using (var local = context.GetLocal(init.Type))
codeGen
.Stloc(local.Local)
.Ldloc(context.ContextLocal)
.Ldloc(local.Local)
.EmitCall(context.RuntimeContext.PushParentMethod)
.Ldloc(local.Local);
}
context.Emit(init.Manipulation, codeGen, null);
if (addToParentStack)
{
codeGen
.Ldloc(context.ContextLocal)
.EmitCall(context.RuntimeContext.PopParentMethod, true);
}
if (supportsInitialize)
{
codeGen
.EmitCall(supportInitType.FindMethod(m => m.Name == "EndInit"));
}
return(XamlIlNodeEmitResult.Void(1));
}
public XamlIlNodeEmitResult Emit(XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
context.Emit(Value, codeGen, Method.DeclaringType);
codeGen
.Ldftn(Method)
.Newobj(DelegateType.Constructors.FirstOrDefault(ct =>
ct.Parameters.Count == 2 && ct.Parameters[0].Equals(context.Configuration.WellKnownTypes.Object)));
return(XamlIlNodeEmitResult.Type(0, DelegateType));
}
public virtual XamlIlNodeEmitResult Emit(XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
if (Previous != null)
{
context.Emit(Previous, codeGen, Type.GetClrType());
}
DoEmit(context, codeGen);
return(XamlIlNodeEmitResult.Type(0, Type.GetClrType()));
}
public XamlIlNodeEmitResult Emit(IXamlIlAstNode node, XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
if (!(node is XamlIlPropertyAssignmentNode an))
return null;
var callOp = an.Property.Setter.IsStatic ? OpCodes.Call : OpCodes.Callvirt;
context.Emit(an.Value, codeGen, an.Property.Setter.Parameters.Last());
codeGen.Emit(callOp, an.Property.Setter);
return XamlIlNodeEmitResult.Void(1);
}
public XamlIlNodeEmitResult Emit(IXamlIlAstNode node, XamlIlEmitContext context, IXamlIlEmitter ilgen)
{
if (!(node is XamlIlMarkupExtensionNode me))
{
return(null);
}
XamlIlNeedsParentStackCache.Verify(context, node);
var prop = context.ParentNodes().OfType <XamlIlPropertyAssignmentNode>().FirstOrDefault();
var needProvideValueTarget = me.ProvideValue.Parameters.Count != 0 &&
context.RuntimeContext.PropertyTargetObject != null &&
prop != null;
void EmitPropertyDescriptor()
{
if (context.Configuration.TypeMappings.ProvideValueTargetPropertyEmitter
?.Invoke(context, ilgen, prop.Property) == true)
{
return;
}
ilgen.Ldstr(prop.Property.Name);
}
context.Emit(me.Value, ilgen, me.Value.Type.GetClrType());
if (me.ProvideValue.Parameters.Count > 0)
{
ilgen
.Emit(OpCodes.Ldloc, context.ContextLocal);
}
if (needProvideValueTarget)
{
ilgen
.Ldloc(context.ContextLocal);
EmitPropertyDescriptor();
ilgen
.Stfld(context.RuntimeContext.PropertyTargetProperty);
}
ilgen.EmitCall(me.ProvideValue);
if (needProvideValueTarget)
{
ilgen
.Ldloc(context.ContextLocal)
.Ldnull()
.Stfld(context.RuntimeContext.PropertyTargetProperty);
}
return(XamlIlNodeEmitResult.Type(0, me.ProvideValue.ReturnType));
}
public XamlIlNodeEmitResult Emit(IXamlIlAstNode node, XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
if (!(node is XamlIlPropertyValueManipulationNode pvm))
{
return(null);
}
codeGen.EmitCall(pvm.Property.Getter);
context.Emit(pvm.Manipulation, codeGen, null);
return(XamlIlNodeEmitResult.Void(1));
}
public XamlIlNodeEmitResult Emit(IXamlIlAstNode node, XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
if (!(node is XamlIlAstTextNode text))
{
return(null);
}
if (!text.Type.GetClrType().Equals(context.Configuration.WellKnownTypes.String))
{
throw new XamlIlLoadException("Text node type wasn't resolved to well-known System.String", node);
}
codeGen.Emit(OpCodes.Ldstr, text.Text);
return(XamlIlNodeEmitResult.Type(0, text.Type.GetClrType()));
}
public XamlIlNodeEmitResult Emit(XamlIlEmitContext context, IXamlIlCodeGen codeGen)
{
var type = TargetType.GetClrType();
var member = ResolveMember(type);
if (member is IXamlIlProperty prop)
{
codeGen.Generator.Emit(OpCodes.Call, prop.Getter);
return(XamlIlNodeEmitResult.Type(prop.Getter.ReturnType));
}
else if (member is IXamlIlField field)
{
if (field.IsLiteral)
{
var ftype = field.FieldType.IsEnum ? field.FieldType.GetEnumUnderlyingType() : field.FieldType;
if (ftype.Name == "UInt64" || ftype.Name == "Int64")
{
codeGen.Generator.Emit(OpCodes.Ldc_I8,
TypeSystemHelpers.ConvertLiteralToLong(field.GetLiteralValue()));
}
else if (ftype.Name == "Double")
{
codeGen.Generator.Emit(OpCodes.Ldc_R8, (double)field.GetLiteralValue());
}
else if (ftype.Name == "Single")
{
codeGen.Generator.Emit(OpCodes.Ldc_R4, (float)field.GetLiteralValue());
}
else if (ftype.Name == "String")
{
codeGen.Generator.Emit(OpCodes.Ldstr, (string)field.GetLiteralValue());
}
else
{
codeGen.Generator.Emit(OpCodes.Ldc_I4,
TypeSystemHelpers.ConvertLiteralToInt(field.GetLiteralValue()));
}
}
else
{
codeGen.Generator.Emit(OpCodes.Ldsfld, field);
}
return(XamlIlNodeEmitResult.Type(field.FieldType));
}
else
{
throw new XamlIlLoadException(
$"Unable to resolve {Member} as static field, property, constant or enum value", this);
}
}
public XamlIlNodeEmitResult Emit(XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
context.Emit(Value, codeGen, context.Configuration.WellKnownTypes.Object);
var t = Type.GetClrType();
if (t.IsValueType)
{
codeGen.Unbox_Any(t);
}
else
{
codeGen.Castclass(t);
}
return(XamlIlNodeEmitResult.Type(0, t));
}
public XamlIlNodeEmitResult Emit(IXamlIlAstNode node, XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
if (!(node is XamlIlValueWithManipulationNode vwm))
{
return(null);
}
var created = context.Emit(vwm.Value, codeGen, vwm.Type.GetClrType());
if (vwm.Manipulation != null &&
!(vwm.Manipulation is XamlIlManipulationGroupNode grp && grp.Children.Count == 0))
{
codeGen.Emit(OpCodes.Dup);
context.Emit(vwm.Manipulation, codeGen, null);
}
return(XamlIlNodeEmitResult.Type(0, created.ReturnType));
}
public XamlIlNodeEmitResult Emit(XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
var type = Value.GetClrType();
var method = _systemType.Methods.FirstOrDefault(m =>
m.Name == "GetTypeFromHandle" && m.Parameters.Count == 1 &&
m.Parameters[0].Name == "RuntimeTypeHandle");
if (method == null)
{
throw new XamlIlTypeSystemException(
$"Unable to find GetTypeFromHandle(RuntimeTypeHandle) on {_systemType.GetFqn()}");
}
codeGen
.Emit(OpCodes.Ldtoken, type)
.Emit(OpCodes.Call, method);
return(XamlIlNodeEmitResult.Type(0, _systemType));
}
public XamlIlNodeEmitResult Emit(XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
var scopeField = context.RuntimeContext.ContextType.Fields.First(f =>
f.Name == AvaloniaXamlIlLanguage.ContextNameScopeFieldName);
using (var targetLoc = context.GetLocal(context.Configuration.WellKnownTypes.Object))
{
codeGen
// var target = {pop}
.Stloc(targetLoc.Local)
// _context.NameScope.Register(Name, target)
.Ldloc(context.ContextLocal)
.Ldfld(scopeField);
context.Emit(Name, codeGen, Name.Type.GetClrType());
codeGen
.Ldloc(targetLoc.Local)
.EmitCall(_types.INameScopeRegister, true);
}
return(XamlIlNodeEmitResult.Void(1));
}
public XamlIlNodeEmitResult Emit(XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
if (Constant is string)
{
codeGen.Emit(OpCodes.Ldstr, (string)Constant);
}
else if (Constant is long || Constant is ulong)
{
codeGen.Emit(OpCodes.Ldc_I8, TypeSystemHelpers.ConvertLiteralToLong(Constant));
}
else if (Constant is float f)
{
codeGen.Emit(OpCodes.Ldc_R4, f);
}
else if (Constant is double d)
{
codeGen.Emit(OpCodes.Ldc_R8, d);
}
else
{
codeGen.Emit(OpCodes.Ldc_I4, TypeSystemHelpers.ConvertLiteralToInt(Constant));
}
return(XamlIlNodeEmitResult.Type(0, Type.GetClrType()));
}
public XamlIlNodeEmitResult Emit(IXamlIlAstNode node, XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
if (!(node is XamlIlManipulationGroupNode group))
{
return(null);
}
if (group.Children.Count == 0)
{
codeGen.Emit(OpCodes.Pop);
}
else
{
for (var c = 0; c < group.Children.Count; c++)
{
if (c != group.Children.Count - 1)
{
codeGen.Emit(OpCodes.Dup);
}
context.Emit(group.Children[c], codeGen, null);
}
}
return(XamlIlNodeEmitResult.Void(1));
}
public XamlIlNodeEmitResult Emit(IXamlIlAstNode node, XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
if (!(node is XamlIlMethodCallBaseNode mc))
{
return(null);
}
bool thisArgFromArgs = node is XamlIlStaticOrTargetedReturnMethodCallNode;
bool expectsVoid = node is XamlIlNoReturnMethodCallNode;
for (var c = 0; c < mc.Arguments.Count; c++)
{
var off = thisArgFromArgs ? 0 : 1;
var expectedType = mc.Method.ParametersWithThis[c + off];
context.Emit(mc.Arguments[c], codeGen, expectedType);
}
mc.Method.Emit(context, codeGen, expectsVoid);
var isVoid = mc.Method.ReturnType.Equals(context.Configuration.WellKnownTypes.Void);
if (!expectsVoid && isVoid)
{
throw new XamlIlLoadException(
$"XamlIlStaticReturnMethodCallNode expects a value while {mc.Method.Name} returns void", node);
}
var consumed = thisArgFromArgs ? 0 : 1;
return(isVoid || expectsVoid
? XamlIlNodeEmitResult.Void(consumed)
: XamlIlNodeEmitResult.Type(consumed, mc.Method.ReturnType));
}
public XamlIlNodeEmitResult Emit(XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
context.Emit(Value, codeGen, Value.Type.GetClrType());
context.Emit(Manipulation, codeGen, null);
return(XamlIlNodeEmitResult.Void(0));
}
public XamlIlNodeEmitResult Emit(XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
codeGen.Emit(OpCodes.Ldnull);
return(XamlIlNodeEmitResult.Type(0, XamlIlPseudoType.Null));
}
public XamlIlNodeEmitResult Emit(XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
codeGen.Ldloc(context.ContextLocal);
return(XamlIlNodeEmitResult.Type(0, Type.GetClrType()));
}
public XamlIlNodeEmitResult Emit(XamlIlEmitContext context, IXamlIlEmitter codeGen)
{
context.LdLocal(this, codeGen);
return(XamlIlNodeEmitResult.Type(0, Type));
}
