public override ExpressionNode VisitFunctionInvocationExpression(FunctionInvocationExpression expression)
{
_writer.WriteIdentifier(expression.Name);
if (expression.HasAsteriskModifier)
{
_writer.Write("(*)");
}
else
{
_writer.Write("(");
for (int i = 0; i < expression.Arguments.Length; i++)
{
if (i > 0)
{
_writer.Write(",");
}
Visit(expression.Arguments[i]);
}
_writer.Write(")");
}
return(expression);
}
public virtual ExpressionNode VisitFunctionInvocationExpression(FunctionInvocationExpression expression)
{
for (int i = 0; i < expression.Arguments.Length; i++)
{
expression.Arguments[i] = VisitExpression(expression.Arguments[i]);
}
return(expression);
}
public override AstElement Clone(Dictionary<AstElement, AstElement> alreadyClonedElements)
{
FunctionInvocationExpression result = new FunctionInvocationExpression();
result.Name = _name;
result.NameSourceRange = _nameSourceRange;
result.HasAsteriskModifier = _hasAsteriskModifier;
result.Arguments = ArrayHelpers.CreateDeepCopyOfAstElementArray(_arguments, alreadyClonedElements);
result.Function = _function;
return result;
}
public override AstElement Clone(Dictionary <AstElement, AstElement> alreadyClonedElements)
{
FunctionInvocationExpression result = new FunctionInvocationExpression();
result.Name = _name;
result.NameSourceRange = _nameSourceRange;
result.HasAsteriskModifier = _hasAsteriskModifier;
result.Arguments = ArrayHelpers.CreateDeepCopyOfAstElementArray(_arguments, alreadyClonedElements);
result.Function = _function;
return(result);
}
public override ExpressionNode VisitFunctionInvocationExpression(FunctionInvocationExpression expression)
{
base.VisitFunctionInvocationExpression(expression);
// Constant folding must not be applied if the function is non-deterministic.
if (!expression.Function.IsDeterministic)
{
return(expression);
}
// Check if all arguments are constants or at least one argument
// is null.
ConstantExpression[] constantArguments = new ConstantExpression[expression.Arguments.Length];
bool allArgumentsAreConstants = true;
for (int i = 0; i < constantArguments.Length; i++)
{
constantArguments[i] = expression.Arguments[i] as ConstantExpression;
if (constantArguments[i] == null)
{
// Ok, one argument is not a constant
// But don't stop: If an argument is null we can still calculate the result!
allArgumentsAreConstants = false;
}
else if (constantArguments[i].IsNullValue)
{
// We found a null. That means the invocation will also yield null.
return(LiteralExpression.FromTypedNull(expression.ExpressionType));
}
}
if (allArgumentsAreConstants)
{
try
{
return(LiteralExpression.FromTypedValue(expression.GetValue(), expression.ExpressionType));
}
catch (RuntimeException ex)
{
_errorReporter.CannotFoldConstants(ex);
}
}
return(expression);
}
public override ExpressionNode VisitFunctionInvocationExpression(FunctionInvocationExpression expression)
{
base.VisitFunctionInvocationExpression(expression);
ReflectionFunctionBinding reflectionFunctionBinding = expression.Function as ReflectionFunctionBinding;
if (reflectionFunctionBinding != null)
{
if (reflectionFunctionBinding.Instance != null)
_ilEmitContext.AddParameter(expression, reflectionFunctionBinding.Instance, reflectionFunctionBinding.Instance.GetType());
}
else
{
_ilEmitContext.AddParameter(expression, expression.Function, typeof (FunctionBinding));
object[] args = new object[expression.Arguments.Length];
_ilEmitContext.AddParameter(expression, args, typeof(object[]));
}
return expression;
}
public override ExpressionNode VisitFunctionInvocationExpression(FunctionInvocationExpression expression)
{
_xmlWriter.WriteStartElement("functionInvocationExpression");
_xmlWriter.WriteAttributeString("identifier", expression.Name.ToSource());
WriteTypeAttribute(expression.ExpressionType);
for (int i = 0; i < expression.Arguments.Length; i++)
{
_xmlWriter.WriteStartElement("argument");
_xmlWriter.WriteAttributeString("index", XmlConvert.ToString(i));
Visit(expression.Arguments[i]);
_xmlWriter.WriteEndElement();
}
_xmlWriter.WriteEndElement();
return(expression);
}
public override ExpressionNode VisitFunctionInvocationExpression(FunctionInvocationExpression expression)
{
base.VisitFunctionInvocationExpression(expression);
ReflectionFunctionBinding reflectionFunctionBinding = expression.Function as ReflectionFunctionBinding;
if (reflectionFunctionBinding != null)
{
if (reflectionFunctionBinding.Instance != null)
{
_ilEmitContext.AddParameter(expression, reflectionFunctionBinding.Instance, reflectionFunctionBinding.Instance.GetType());
}
}
else
{
_ilEmitContext.AddParameter(expression, expression.Function, typeof(FunctionBinding));
object[] args = new object[expression.Arguments.Length];
_ilEmitContext.AddParameter(expression, args, typeof(object[]));
}
return(expression);
}
private static bool VisitFunctionInvocationExpression(FunctionInvocationExpression node1, FunctionInvocationExpression node2)
{
if (node2 == null)
{
return(false);
}
if (node1.HasAsteriskModifier != node2.HasAsteriskModifier ||
node1.Arguments.Length != node2.Arguments.Length ||
node1.Name != node2.Name)
{
return(false);
}
for (int i = 0; i < node1.Arguments.Length; i++)
{
if (!Visit(node1.Arguments[i], node2.Arguments[i]))
{
return(false);
}
}
return(true);
}
public override ExpressionNode VisitFunctionInvocationExpression(FunctionInvocationExpression expression)
{
_xmlWriter.WriteStartElement("functionInvocationExpression");
_xmlWriter.WriteAttributeString("identifier", expression.Name.ToSource());
WriteTypeAttribute(expression.ExpressionType);
for (int i = 0; i < expression.Arguments.Length; i++)
{
_xmlWriter.WriteStartElement("argument");
_xmlWriter.WriteAttributeString("index", XmlConvert.ToString(i));
Visit(expression.Arguments[i]);
_xmlWriter.WriteEndElement();
}
_xmlWriter.WriteEndElement();
return expression;
}
public override ExpressionNode VisitFunctionInvocationExpression(FunctionInvocationExpression expression)
{
base.VisitFunctionInvocationExpression(expression);
// Constant folding must not be applied if the function is non-deterministic.
if (!expression.Function.IsDeterministic)
return expression;
// Check if all arguments are constants or at least one argument
// is null.
ConstantExpression[] constantArguments = new ConstantExpression[expression.Arguments.Length];
bool allArgumentsAreConstants = true;
for (int i = 0; i < constantArguments.Length; i++)
{
constantArguments[i] = expression.Arguments[i] as ConstantExpression;
if (constantArguments[i] == null)
{
// Ok, one argument is not a constant
// But don't stop: If an argument is null we can still calculate the result!
allArgumentsAreConstants = false;
}
else if (constantArguments[i].IsNullValue)
{
// We found a null. That means the invocation will also yield null.
return LiteralExpression.FromTypedNull(expression.ExpressionType);
}
}
if (allArgumentsAreConstants)
{
try
{
return LiteralExpression.FromTypedValue(expression.GetValue(), expression.ExpressionType);
}
catch (RuntimeException ex)
{
_errorReporter.CannotFoldConstants(ex);
}
}
return expression;
}
public override ExpressionNode VisitFunctionInvocationExpression(FunctionInvocationExpression expression)
{
ReflectionFunctionBinding reflectionFunctionBinding = expression.Function as ReflectionFunctionBinding;
if (reflectionFunctionBinding != null)
{
MethodInfo method = reflectionFunctionBinding.Method;
ParameterInfo[] parameterInfos = method.GetParameters();
ILParameterDeclaration instance;
if (reflectionFunctionBinding.Instance != null)
instance = _ilEmitContext.GetParameters(expression)[0];
else
instance = null;
int[] argLocalIndexes = new int[expression.Arguments.Length];
for (int i = 0; i < expression.Arguments.Length; i++)
argLocalIndexes[i] = DeclareLocal();
for (int i = 0; i < expression.Arguments.Length; i++)
{
Visit(expression.Arguments[i]);
_ilEmitContext.ILGenerator.Emit(OpCodes.Stloc, argLocalIndexes[i]);
}
Label loadNullLabel = _ilEmitContext.ILGenerator.DefineLabel();
Label finishLabel = _ilEmitContext.ILGenerator.DefineLabel();
for (int i = 0; i < expression.Arguments.Length; i++)
{
_ilEmitContext.ILGenerator.Emit(OpCodes.Ldloc, argLocalIndexes[i]);
_ilEmitContext.ILGenerator.Emit(OpCodes.Brfalse, loadNullLabel);
}
if (instance != null)
{
EmitLoadParameter(instance);
EmitThisArgumentPointer(instance.Type);
}
for (int i = 0; i < expression.Arguments.Length; i++)
{
_ilEmitContext.ILGenerator.Emit(OpCodes.Ldloc, argLocalIndexes[i]);
if (parameterInfos[i].ParameterType != typeof(object))
EmitConversion(parameterInfos[i].ParameterType);
}
EmitRawCall(method, instance == null ? null : instance.Type);
if (method.ReturnType.IsValueType)
_ilEmitContext.ILGenerator.Emit(OpCodes.Box, method.ReturnType);
_ilEmitContext.ILGenerator.EmitCall(OpCodes.Call, _unifyNullsMethod, null);
_ilEmitContext.ILGenerator.Emit(OpCodes.Br, finishLabel);
_ilEmitContext.ILGenerator.MarkLabel(loadNullLabel);
_ilEmitContext.ILGenerator.Emit(OpCodes.Ldnull);
_ilEmitContext.ILGenerator.MarkLabel(finishLabel);
}
else
{
int[] argLocalIndexes = new int[expression.Arguments.Length];
for (int i = 0; i < expression.Arguments.Length; i++)
argLocalIndexes[i] = DeclareLocal();
for (int i = 0; i < expression.Arguments.Length; i++)
{
Visit(expression.Arguments[i]);
_ilEmitContext.ILGenerator.Emit(OpCodes.Stloc, argLocalIndexes[i]);
}
Label loadNullLabel = _ilEmitContext.ILGenerator.DefineLabel();
Label finishLabel = _ilEmitContext.ILGenerator.DefineLabel();
for (int i = 0; i < expression.Arguments.Length; i++)
{
_ilEmitContext.ILGenerator.Emit(OpCodes.Ldloc, argLocalIndexes[i]);
_ilEmitContext.ILGenerator.Emit(OpCodes.Brfalse, loadNullLabel);
}
ILParameterDeclaration customFunctionBinding = _ilEmitContext.GetParameters(expression)[0];
ILParameterDeclaration argsArray = _ilEmitContext.GetParameters(expression)[1];
int argsArrayIndex = DeclareLocal();
EmitLoadParameter(argsArray);
_ilEmitContext.ILGenerator.Emit(OpCodes.Stloc, argsArrayIndex);
for (int i = 0; i < expression.Arguments.Length; i++)
{
_ilEmitContext.ILGenerator.Emit(OpCodes.Ldloc, argsArrayIndex);
_ilEmitContext.ILGenerator.Emit(OpCodes.Ldc_I4, i);
_ilEmitContext.ILGenerator.Emit(OpCodes.Ldloc, argLocalIndexes[i]);
_ilEmitContext.ILGenerator.Emit(OpCodes.Stelem_Ref);
}
EmitLoadParameter(customFunctionBinding);
EmitThisArgumentPointer(typeof(FunctionBinding));
_ilEmitContext.ILGenerator.Emit(OpCodes.Ldloc, argsArrayIndex);
_ilEmitContext.ILGenerator.EmitCall(OpCodes.Callvirt, _functionBindingInvokeMethod, null);
_ilEmitContext.ILGenerator.EmitCall(OpCodes.Call, _unifyNullsMethod, null);
_ilEmitContext.ILGenerator.Emit(OpCodes.Br, finishLabel);
_ilEmitContext.ILGenerator.MarkLabel(loadNullLabel);
_ilEmitContext.ILGenerator.Emit(OpCodes.Ldnull);
_ilEmitContext.ILGenerator.MarkLabel(finishLabel);
}
return expression;
}
public override ExpressionNode VisitFunctionInvocationExpression(FunctionInvocationExpression expression)
{
// Resolve aggregation
// -- or --
// Resolve method
// First all parameters must be resolved.
base.VisitFunctionInvocationExpression(expression);
// If the type of any argument could not be resolved we cannot resolve the method.
foreach (ExpressionNode argument in expression.Arguments)
{
if (argument.ExpressionType == null)
return expression;
}
// Resolve aggregate
bool canBeAggregate = expression.Arguments.Length == 1 || (expression.Arguments.Length == 0 && expression.HasAsteriskModifier);
if (canBeAggregate)
{
AggregateBinding aggregateBinding = ResolveAggregate(expression.NameSourceRange, expression.Name);
if (aggregateBinding != null)
{
ExpressionNode aggregateArgument;
if (!expression.HasAsteriskModifier)
{
aggregateArgument = expression.Arguments[0];
}
else
{
// Only COUNT can have the asterisk modifier.
Identifier countName = Identifier.CreateNonVerbatim("COUNT");
if (!countName.Matches(aggregateBinding.Name))
ErrorReporter.AsteriskModifierNotAllowed(expression.NameSourceRange, expression);
// The semantic of COUNT(*) says that it counts all rows of the bound
// query. The same result can be accomplished by using COUNT(0) (or any
// otherc onstant non-null expression as argument). Therefore we use a
// literal zero as the argument.
aggregateArgument = LiteralExpression.FromInt32(0);
}
IAggregator aggregator = aggregateBinding.CreateAggregator(aggregateArgument.ExpressionType);
if (aggregator == null)
{
ErrorReporter.AggregateDoesNotSupportType(aggregateBinding, aggregateArgument.ExpressionType);
return expression;
}
AggregateExpression aggregateExpression = new AggregateExpression();
aggregateExpression.Aggregate = aggregateBinding;
aggregateExpression.Aggregator = aggregator;
aggregateExpression.Argument = aggregateArgument;
aggregateExpression.HasAsteriskModifier = expression.HasAsteriskModifier;
return aggregateExpression;
}
}
// Resolve method
if (expression.HasAsteriskModifier)
{
// Simple invocations cannot have asterisk modifier.
ErrorReporter.AsteriskModifierNotAllowed(expression.NameSourceRange, expression);
// Leave to avoid cascading errors.
return expression;
}
Type[] argumentTypes = new Type[expression.Arguments.Length];
for (int i = 0; i < argumentTypes.Length; i++)
argumentTypes[i] = expression.Arguments[i].ExpressionType;
expression.Function = ResolveFunction(expression.Name, argumentTypes);
if (expression.Function == null)
{
ErrorReporter.UndeclaredFunction(expression.NameSourceRange, expression.Name, argumentTypes);
}
else
{
// Convert all arguments if necessary
Type[] parameterTypes = expression.Function.GetParameterTypes();
for (int i = 0; i < expression.Arguments.Length; i++)
expression.Arguments[i] = Binder.ConvertExpressionIfRequired(expression.Arguments[i], parameterTypes[i]);
}
return expression;
}
private ExpressionNode ParsePrimaryExpression()
{
switch (_token.Id)
{
case TokenId.NULL:
NextToken();
return(LiteralExpression.FromNull());
case TokenId.TRUE:
case TokenId.FALSE:
return(ParseBooleanLiteral());
case TokenId.Date:
return(ParseDateLiteral());
case TokenId.Number:
return(ParseNumberLiteral());
case TokenId.String:
return(LiteralExpression.FromString(ParseString()));
case TokenId.EXISTS:
{
ExistsSubselect result = new ExistsSubselect();
NextToken();
Match(TokenId.LeftParentheses);
result.Query = ParseQuery();
Match(TokenId.RightParentheses);
return(result);
}
case TokenId.ParameterMarker:
{
_rangeRecorder.Begin();
NextToken();
Identifier name = ParseIdentifier();
SourceRange nameSourceRange = _rangeRecorder.End();
ParameterExpression result = new ParameterExpression();
result.Name = name;
result.NameSourceRange = nameSourceRange;
return(result);
}
case TokenId.CAST:
{
NextToken();
CastExpression castExpression = new CastExpression();
Match(TokenId.LeftParentheses);
castExpression.Expression = ParseExpression();
Match(TokenId.AS);
castExpression.TypeReference = ParseTypeReference();
Match(TokenId.RightParentheses);
return(castExpression);
}
case TokenId.CASE:
{
NextToken();
CaseExpression caseExpression = new CaseExpression();
if (_token.Id != TokenId.WHEN && _token.Id != TokenId.ELSE && _token.Id != TokenId.END)
{
caseExpression.InputExpression = ParseExpression();
}
List <ExpressionNode> whenExpressionList = new List <ExpressionNode>();
List <ExpressionNode> expressionList = new List <ExpressionNode>();
if (_token.Id != TokenId.WHEN)
{
Match(TokenId.WHEN);
}
else
{
while (_token.Id == TokenId.WHEN)
{
NextToken();
whenExpressionList.Add(ParseExpression());
Match(TokenId.THEN);
expressionList.Add(ParseExpression());
}
}
caseExpression.WhenExpressions = whenExpressionList.ToArray();
caseExpression.ThenExpressions = expressionList.ToArray();
if (_token.Id == TokenId.ELSE)
{
NextToken();
caseExpression.ElseExpression = ParseExpression();
}
Match(TokenId.END);
return(caseExpression);
}
case TokenId.COALESCE:
{
NextToken();
CoalesceExpression coalesceExpression = new CoalesceExpression();
coalesceExpression.Expressions = ParseExpressionList();
return(coalesceExpression);
}
case TokenId.NULLIF:
{
NextToken();
NullIfExpression nullIfExpression = new NullIfExpression();
Match(TokenId.LeftParentheses);
nullIfExpression.LeftExpression = ParseExpression();
Match(TokenId.Comma);
nullIfExpression.RightExpression = ParseExpression();
Match(TokenId.RightParentheses);
return(nullIfExpression);
}
case TokenId.Identifier:
{
_rangeRecorder.Begin();
Identifier name = ParseIdentifier();
SourceRange nameSourceRange = _rangeRecorder.End();
if (_token.Id != TokenId.LeftParentheses)
{
NameExpression result = new NameExpression();
result.Name = name;
result.NameSourceRange = nameSourceRange;
return(result);
}
else
{
bool hasAsteriskModifier;
ExpressionNode[] args;
if (_lookahead.Id != TokenId.Multiply)
{
hasAsteriskModifier = false;
args = ParseExpressionList();
}
else
{
NextToken();
NextToken();
Match(TokenId.RightParentheses);
hasAsteriskModifier = true;
args = new ExpressionNode[0];
}
FunctionInvocationExpression result = new FunctionInvocationExpression();
result.Name = name;
result.NameSourceRange = nameSourceRange;
result.Arguments = args;
result.HasAsteriskModifier = hasAsteriskModifier;
return(result);
}
}
case TokenId.LeftParentheses:
{
NextToken();
ExpressionNode expr;
if (_token.Id != TokenId.SELECT)
{
expr = ParseExpression();
}
else
{
SingleRowSubselect singleRowSubselect = new SingleRowSubselect();
singleRowSubselect.Query = ParseQuery();
expr = singleRowSubselect;
}
Match(TokenId.RightParentheses);
return(expr);
}
default:
{
_errorReporter.SimpleExpressionExpected(_token.Range, _token.Text);
return(LiteralExpression.FromNull());
}
}
}
private static bool VisitFunctionInvocationExpression(FunctionInvocationExpression node1, FunctionInvocationExpression node2)
{
if (node2 == null)
return false;
if (node1.HasAsteriskModifier != node2.HasAsteriskModifier ||
node1.Arguments.Length != node2.Arguments.Length ||
node1.Name != node2.Name)
return false;
for (int i = 0; i < node1.Arguments.Length; i++)
if (!Visit(node1.Arguments[i], node2.Arguments[i]))
return false;
return true;
}
public override ExpressionNode VisitFunctionInvocationExpression(FunctionInvocationExpression expression)
{
_writer.WriteIdentifier(expression.Name);
if (expression.HasAsteriskModifier)
{
_writer.Write("(*)");
}
else
{
_writer.Write("(");
for (int i = 0; i < expression.Arguments.Length; i++)
{
if (i > 0)
_writer.Write(",");
Visit(expression.Arguments[i]);
}
_writer.Write(")");
}
return expression;
}
private ExpressionNode ParsePrimaryExpression()
{
switch (_token.Id)
{
case TokenId.NULL:
NextToken();
return LiteralExpression.FromNull();
case TokenId.TRUE:
case TokenId.FALSE:
return ParseBooleanLiteral();
case TokenId.Date:
return ParseDateLiteral();
case TokenId.Number:
return ParseNumberLiteral();
case TokenId.String:
return LiteralExpression.FromString(ParseString());
case TokenId.EXISTS:
{
ExistsSubselect result = new ExistsSubselect();
NextToken();
Match(TokenId.LeftParentheses);
result.Query = ParseQuery();
Match(TokenId.RightParentheses);
return result;
}
case TokenId.ParameterMarker:
{
_rangeRecorder.Begin();
NextToken();
Identifier name = ParseIdentifier();
SourceRange nameSourceRange = _rangeRecorder.End();
ParameterExpression result = new ParameterExpression();
result.Name = name;
result.NameSourceRange = nameSourceRange;
return result;
}
case TokenId.CAST:
{
NextToken();
CastExpression castExpression = new CastExpression();
Match(TokenId.LeftParentheses);
castExpression.Expression = ParseExpression();
Match(TokenId.AS);
castExpression.TypeReference = ParseTypeReference();
Match(TokenId.RightParentheses);
return castExpression;
}
case TokenId.CASE:
{
NextToken();
CaseExpression caseExpression = new CaseExpression();
if (_token.Id != TokenId.WHEN && _token.Id != TokenId.ELSE && _token.Id != TokenId.END)
caseExpression.InputExpression = ParseExpression();
List<ExpressionNode> whenExpressionList = new List<ExpressionNode>();
List<ExpressionNode> expressionList = new List<ExpressionNode>();
if (_token.Id != TokenId.WHEN)
{
Match(TokenId.WHEN);
}
else
{
while (_token.Id == TokenId.WHEN)
{
NextToken();
whenExpressionList.Add(ParseExpression());
Match(TokenId.THEN);
expressionList.Add(ParseExpression());
}
}
caseExpression.WhenExpressions = whenExpressionList.ToArray();
caseExpression.ThenExpressions = expressionList.ToArray();
if (_token.Id == TokenId.ELSE)
{
NextToken();
caseExpression.ElseExpression = ParseExpression();
}
Match(TokenId.END);
return caseExpression;
}
case TokenId.COALESCE:
{
NextToken();
CoalesceExpression coalesceExpression = new CoalesceExpression();
coalesceExpression.Expressions = ParseExpressionList();
return coalesceExpression;
}
case TokenId.NULLIF:
{
NextToken();
NullIfExpression nullIfExpression = new NullIfExpression();
Match(TokenId.LeftParentheses);
nullIfExpression.LeftExpression = ParseExpression();
Match(TokenId.Comma);
nullIfExpression.RightExpression = ParseExpression();
Match(TokenId.RightParentheses);
return nullIfExpression;
}
case TokenId.Identifier:
{
_rangeRecorder.Begin();
Identifier name = ParseIdentifier();
SourceRange nameSourceRange = _rangeRecorder.End();
if (_token.Id != TokenId.LeftParentheses)
{
NameExpression result = new NameExpression();
result.Name = name;
result.NameSourceRange = nameSourceRange;
return result;
}
else
{
bool hasAsteriskModifier;
ExpressionNode[] args;
if (_lookahead.Id != TokenId.Multiply)
{
hasAsteriskModifier = false;
args = ParseExpressionList();
}
else
{
NextToken();
NextToken();
Match(TokenId.RightParentheses);
hasAsteriskModifier = true;
args = new ExpressionNode[0];
}
FunctionInvocationExpression result = new FunctionInvocationExpression();
result.Name = name;
result.NameSourceRange = nameSourceRange;
result.Arguments = args;
result.HasAsteriskModifier = hasAsteriskModifier;
return result;
}
}
case TokenId.LeftParentheses:
{
NextToken();
ExpressionNode expr;
if (_token.Id != TokenId.SELECT)
{
expr = ParseExpression();
}
else
{
SingleRowSubselect singleRowSubselect = new SingleRowSubselect();
singleRowSubselect.Query = ParseQuery();
expr = singleRowSubselect;
}
Match(TokenId.RightParentheses);
return expr;
}
default:
{
_errorReporter.SimpleExpressionExpected(_token.Range, _token.Text);
return LiteralExpression.FromNull();
}
}
}
public override ExpressionNode VisitFunctionInvocationExpression(FunctionInvocationExpression expression)
{
ReflectionFunctionBinding reflectionFunctionBinding = expression.Function as ReflectionFunctionBinding;
if (reflectionFunctionBinding != null)
{
MethodInfo method = reflectionFunctionBinding.Method;
ParameterInfo[] parameterInfos = method.GetParameters();
ILParameterDeclaration instance;
if (reflectionFunctionBinding.Instance != null)
{
instance = _ilEmitContext.GetParameters(expression)[0];
}
else
{
instance = null;
}
int[] argLocalIndexes = new int[expression.Arguments.Length];
for (int i = 0; i < expression.Arguments.Length; i++)
{
argLocalIndexes[i] = DeclareLocal();
}
for (int i = 0; i < expression.Arguments.Length; i++)
{
Visit(expression.Arguments[i]);
_ilEmitContext.ILGenerator.Emit(OpCodes.Stloc, argLocalIndexes[i]);
}
Label loadNullLabel = _ilEmitContext.ILGenerator.DefineLabel();
Label finishLabel = _ilEmitContext.ILGenerator.DefineLabel();
for (int i = 0; i < expression.Arguments.Length; i++)
{
_ilEmitContext.ILGenerator.Emit(OpCodes.Ldloc, argLocalIndexes[i]);
_ilEmitContext.ILGenerator.Emit(OpCodes.Brfalse, loadNullLabel);
}
if (instance != null)
{
EmitLoadParameter(instance);
EmitThisArgumentPointer(instance.Type);
}
for (int i = 0; i < expression.Arguments.Length; i++)
{
_ilEmitContext.ILGenerator.Emit(OpCodes.Ldloc, argLocalIndexes[i]);
if (parameterInfos[i].ParameterType != typeof(object))
{
EmitConversion(parameterInfos[i].ParameterType);
}
}
EmitRawCall(method, instance == null ? null : instance.Type);
if (method.ReturnType.IsValueType)
{
_ilEmitContext.ILGenerator.Emit(OpCodes.Box, method.ReturnType);
}
_ilEmitContext.ILGenerator.EmitCall(OpCodes.Call, _unifyNullsMethod, null);
_ilEmitContext.ILGenerator.Emit(OpCodes.Br, finishLabel);
_ilEmitContext.ILGenerator.MarkLabel(loadNullLabel);
_ilEmitContext.ILGenerator.Emit(OpCodes.Ldnull);
_ilEmitContext.ILGenerator.MarkLabel(finishLabel);
}
else
{
int[] argLocalIndexes = new int[expression.Arguments.Length];
for (int i = 0; i < expression.Arguments.Length; i++)
{
argLocalIndexes[i] = DeclareLocal();
}
for (int i = 0; i < expression.Arguments.Length; i++)
{
Visit(expression.Arguments[i]);
_ilEmitContext.ILGenerator.Emit(OpCodes.Stloc, argLocalIndexes[i]);
}
Label loadNullLabel = _ilEmitContext.ILGenerator.DefineLabel();
Label finishLabel = _ilEmitContext.ILGenerator.DefineLabel();
for (int i = 0; i < expression.Arguments.Length; i++)
{
_ilEmitContext.ILGenerator.Emit(OpCodes.Ldloc, argLocalIndexes[i]);
_ilEmitContext.ILGenerator.Emit(OpCodes.Brfalse, loadNullLabel);
}
ILParameterDeclaration customFunctionBinding = _ilEmitContext.GetParameters(expression)[0];
ILParameterDeclaration argsArray = _ilEmitContext.GetParameters(expression)[1];
int argsArrayIndex = DeclareLocal();
EmitLoadParameter(argsArray);
_ilEmitContext.ILGenerator.Emit(OpCodes.Stloc, argsArrayIndex);
for (int i = 0; i < expression.Arguments.Length; i++)
{
_ilEmitContext.ILGenerator.Emit(OpCodes.Ldloc, argsArrayIndex);
_ilEmitContext.ILGenerator.Emit(OpCodes.Ldc_I4, i);
_ilEmitContext.ILGenerator.Emit(OpCodes.Ldloc, argLocalIndexes[i]);
_ilEmitContext.ILGenerator.Emit(OpCodes.Stelem_Ref);
}
EmitLoadParameter(customFunctionBinding);
EmitThisArgumentPointer(typeof(FunctionBinding));
_ilEmitContext.ILGenerator.Emit(OpCodes.Ldloc, argsArrayIndex);
_ilEmitContext.ILGenerator.EmitCall(OpCodes.Callvirt, _functionBindingInvokeMethod, null);
_ilEmitContext.ILGenerator.EmitCall(OpCodes.Call, _unifyNullsMethod, null);
_ilEmitContext.ILGenerator.Emit(OpCodes.Br, finishLabel);
_ilEmitContext.ILGenerator.MarkLabel(loadNullLabel);
_ilEmitContext.ILGenerator.Emit(OpCodes.Ldnull);
_ilEmitContext.ILGenerator.MarkLabel(finishLabel);
}
return(expression);
}
public virtual ExpressionNode VisitFunctionInvocationExpression(FunctionInvocationExpression expression)
{
for (int i = 0; i < expression.Arguments.Length; i++)
expression.Arguments[i] = VisitExpression(expression.Arguments[i]);
return expression;
}
