Func <InvocationContext, object, bool> CompileSwitchCase(CompileContext ctx, SwitchCase switchCase)
{
int valueLength = switchCase.TestValues.Count;
var valueEvals = new CompiledDelegate[valueLength];
for (int i = 0; i < valueLength; i++)
{
valueEvals[i] = switchCase.TestValues[i].Compile(ctx);
}
var bodyEval = switchCase.Body.Compile(ctx);
return((invoke, value) =>
{
bool isMatch = false;
for (int i = 0; i < valueLength; i++)
{
if (object.Equals(value, valueEvals[i](invoke)))
{
isMatch = true;
break;
}
}
if (!isMatch)
{
return false;
}
bodyEval(invoke);
return true;
});
}
public override CompiledDelegate Compile(CompileContext ctx)
{
var valueEval = testValue.Compile(ctx);
int caseLength = cases.Count;
var caseEvals = new Func <InvocationContext, object, bool> [caseLength];
CompiledDelegate defaultBodyEval = null;
for (int i = 0; i < caseLength; i++)
{
caseEvals[i] = CompileSwitchCase(ctx, cases[i]);
}
if (defaultBody != null)
{
defaultBodyEval = defaultBody.Compile(ctx);
}
return((invoke) =>
{
var _caseLength = caseLength;
var _caseEvals = caseEvals;
var value = valueEval(invoke);
for (int i = 0; i < _caseLength; i++)
{
if (_caseEvals[i](invoke, value))
{
return null;
}
}
defaultBodyEval?.Invoke(invoke);
return null;
});
}
public override Action <InvocationContext, object> CompileSetValue(CompileContext ctx)
{
string name = this.name;
return((invoke, value) =>
{
invoke.SetVariable(name, value);
});
}
//private MemberInfo GetMember()
//{
// if (member != null)
// return member;
// Type memberType = this.instanceType;
// if (memberType == null)
// {
// if (instance == null)
// throw new ExpressionException("Membr Instance Null. Member: {0}".FormatArgs(memberName));
// memberType = instance.ValueType;
// if (memberType == null)
// throw new ExpressionException("Membr Type Null. Member: {0}".FormatArgs(memberName));
// }
// if (isProperty == null || isProperty.Value)
// {
// PropertyInfo pInfo = memberType.GetProperty(memberName);
// if (pInfo != null)
// return pInfo;
// if (isProperty != null && pInfo == null) throw new ExpressionException(Resource1.PropertyNotFound.FormatArgs(memberName));
// }
// if (isProperty == null || !isProperty.Value)
// {
// FieldInfo fInfo = memberType.GetField(memberName);
// if (fInfo != null)
// return fInfo;
// if (isProperty != null && fInfo == null) throw new ExpressionException(Resource1.FieldNotFound.FormatArgs(memberName));
// }
// throw new ExpressionException(Resource1.PropertyOrFieldNotFound.FormatArgs(memberName));
//}
private CompiledDelegate CompileTarget(CompileContext ctx)
{
if (instance == null)
{
throw new MemberAccessException("Target Null");
}
var targetEval = instance.Compile(ctx);
return(targetEval);
}
public override Action <InvocationContext, object> CompileSetValue(CompileContext ctx)
{
CompiledDelegate targetEval;
var property = member as PropertyInfo;
if (property != null)
{
var setter = property.GetSetMethod();
if (setter == null)
{
throw new MemberAccessException(Resource1.PropertyNotWritable.FormatArgs(member.Name));
}
if (setter.IsStatic)
{
return((invoke, value) =>
{
setter.Invoke(null, new object[] { value });
});
}
else
{
targetEval = CompileTarget(ctx);
return((invoke, value) =>
{
setter.Invoke(targetEval(invoke), new object[] { value });
});
}
}
var field = member as FieldInfo;
if (field.IsInitOnly)
{
throw new MemberAccessException(Resource1.FieldNotWritable.FormatArgs(member.Name));
}
if (field.IsStatic)
{
return((invoke, value) =>
{
field.SetValue(null, value);
});
}
else
{
targetEval = CompileTarget(ctx);
return((invoke, value) =>
{
var obj = targetEval(invoke);
field.SetValue(obj, value);
});
}
}
public void Dispose()
{
if (isDisposed)
{
return;
}
current = origin;
origin = null;
isDisposed = true;
System.Threading.Monitor.Exit(lockObj);
}
public override CompiledDelegate Compile(CompileContext ctx)
{
var lhs = operand.Compile(ctx);
if (isOperandCompiled)
{
return(lhs);
}
var method = this.method;
return((invoke) => method.Invoke(null, new object[] { lhs(invoke) }));
}
public override CompiledDelegate Compile(CompileContext ctx)
{
var lhs = left.Compile(ctx);
var rhs = right.Compile(ctx);
var method = this.method;
if (isEvalBefore)
{
return((invoke) => method.Invoke(null, new object[] { invoke, lhs, rhs }));
}
return((invoke) => method.Invoke(null, new object[] { lhs(invoke), rhs(invoke) }));
}
//OperatorInfo OperInfo => CompileContext.Current.GetOperatorInfo(ExpressionType, typeof(object), typeof(Type));
public override CompiledDelegate Compile(CompileContext ctx)
{
var typeOperand = this.typeOperand;
var lhs = Operand.Compile(ctx);
var method = this.Method;
if (ExpressionType == ExpressionType.Convert && method.GetParameters().Length == 2)
{
return((invoke) => System.Convert.ChangeType(lhs(invoke), typeOperand));
}
return((invoke) => method.Invoke(null, new object[] { lhs(invoke) }));
}
public Action <InvocationContext> CompileInitValue(CompileContext ctx)
{
Type valueType = this.type;
string name = this.name;
if (defaultValue == null)
{
return((invoke) => ((ExpressionContext)invoke.Context).AddVariable(valueType, name));
}
var valueEval = defaultValue.Compile(ctx);
return((invoke) => ((ExpressionContext)invoke.Context).AddVariable(valueType, name, valueEval(invoke)));
}
public override CompiledDelegate Compile(CompileContext ctx)
{
var lhs = operand.Compile(ctx);
var typeOperand = this.typeOperand;
var oper = OperInfo;
var method = oper.method;
switch (ExpressionType)
{
case ExpressionType.TypeAs:
return((invoke) => DefaultOperators.TypeAs(lhs(invoke), typeOperand));
case ExpressionType.TypeIs:
return((invoke) => DefaultOperators.TypeIs(lhs(invoke), typeOperand));
}
throw new NotImplementedException();
}
private CompileContext(CompileContext parent, IExpressionContext context, BlockType blockType, bool isDefault)
{
variables = new Dictionary <string, VariableInfo>();
variableMetadata = new Dictionary <string, object>();
this.context = context;
this.blockType = blockType;
if (parent == null)
{
if (isDefault)
{
InitDefault();
}
else
{
this.parent = Default;
}
}
else
{
this.parent = parent;
}
}
private Func <FunctionInvoker, Delegate> CompileFunction(CompileContext ctx)
{
if (!string.IsNullOrEmpty(name))
{
ctx.AddVariable(ValueType, name);
}
CompiledDelegate evalBody;
var arguments = this.arguments;
var child = new CompileContext(ctx, BlockType.Method);
foreach (var arg in arguments)
{
child.AddVariable(arg.ValueType, arg.Name);
}
evalBody = body.Compile(child);
return((funcInvoke) =>
{
funcInvoke.body = evalBody;
funcInvoke.arguments = arguments;
switch (arguments.Count)
{
case 0: return Func0(funcInvoke);
case 1: return Func1(funcInvoke);
case 2: return Func2(funcInvoke);
case 3: return Func3(funcInvoke);
case 4: return Func4(funcInvoke);
}
return null;
});
}
public override CompiledDelegate Compile(CompileContext ctx)
{
var gotoType = this.gotoType;
if (gotoType == GotoType.Return)
{
var valueEval = value.Compile(ctx);
return((invoke) =>
{
object returnValue = valueEval(invoke);
invoke.SetGoto(GotoType.Return, returnValue);
return returnValue;
});
}
else
{
return((invoke) =>
{
invoke.SetGoto(gotoType, null);
return null;
});
}
}
public override CompiledDelegate Compile(CompileContext ctx)
{
var parent = CompileContext.Current;
var func = CompileFunction(ctx);
//if (!string.IsNullOrEmpty(name))
//{
// parent.AddVariable(ValueType, name);
//}
return((invoke) =>
{
FunctionInvoker funcInvoke = new FunctionInvoker(invoke);
var del = func(funcInvoke);
if (!string.IsNullOrEmpty(name))
{
((ExpressionContext)invoke.Context).AddVariable <Delegate>(name, del);
}
return del;
});
}
public override CompiledDelegate Compile(CompileContext ctx)
{
var valueEval = Right.Compile(ctx);
var setterEval = ((AccessableExpression)Left).CompileSetValue(ctx);
if (isPre)
{
var getterEval = ((AccessableExpression)Left).Compile(ctx);
return((invoke) =>
{
var preValue = getterEval(invoke);
object value = valueEval(invoke);
setterEval(invoke, value);
return preValue;
});
}
return((invoke) =>
{
object value = valueEval(invoke);
setterEval(invoke, value);
return value;
});
}
public bool ContainsVariable(string name)
{
if (name == null)
{
throw new ArgumentNullException(nameof(name));
}
CompileContext current = this;
while (current != null)
{
if (current.variables != null && current.variables.ContainsKey(name))
{
return(true);
}
if (current.context != null && current.context.ContainsVariable(name))
{
return(true);
}
current = current.parent;
}
return(false);
}
public override CompiledDelegate Compile(CompileContext ctx)
{
var property = member as PropertyInfo;
CompiledDelegate targetEval;
if (property != null)
{
var getter = property.GetGetMethod();
if (getter == null)
{
throw new MemberAccessException(Resource1.PropertyNotReadable.FormatArgs(member.Name));
}
if (getter.IsStatic)
{
return((invoke) => getter.Invoke(null, InternalExtensions.EmptyObjects));
}
else
{
targetEval = CompileTarget(ctx);
return((invoke) => getter.Invoke(targetEval(invoke), InternalExtensions.EmptyObjects));
}
}
var field = member as FieldInfo;
if (field.IsStatic)
{
return((invoke) => field.GetValue(null));
}
else
{
targetEval = CompileTarget(ctx);
return((invoke) => field.GetValue(targetEval(invoke)));
}
}
public override CompiledDelegate Compile(CompileContext ctx)
{
var variables = this.variables;
CompiledDelegate[] evals;
Action <InvocationContext>[] evalVars;
var child = new CompileContext(ctx, BlockType.Block);
foreach (var variable in variables)
{
child.AddVariable(variable.ValueType, variable.Name);
}
evals = expressions.Select(o => o.Compile(child)).ToArray();
evalVars = variables.Select(o => o.CompileInitValue(child)).ToArray();
return((invoke) =>
{
var childInvoke = invoke.CreateChild(BlockType.Block);
foreach (var evalVar in evalVars)
{
evalVar(childInvoke);
}
foreach (var expr in evals)
{
expr(childInvoke);
if (childInvoke.GotoType != GotoType.None)
{
childInvoke.BubblingGoto();
break;
}
}
return null;
});
}
public override CompiledDelegate Compile(CompileContext ctx)
{
return(_Compile(ctx, value));
}
public abstract Action <InvocationContext, object> CompileSetValue(CompileContext ctx);
public CompileContext(CompileContext parent, BlockType blockType = BlockType.Block)
: this(parent, null, blockType, false)
{
}
public Scope(CompileContext newScope)
{
System.Threading.Monitor.Enter(lockObj);
origin = current;
current = newScope;
}
public CompileContext(CompileContext parent, IExpressionContext context, BlockType blockType = BlockType.Block)
: this(parent, context, blockType, false)
{
}
public override CompiledDelegate Compile(CompileContext ctx)
{
return(Operand.Compile(ctx));
}
public override CompiledDelegate Compile(CompileContext ctx)
{
string name = this.name;
return((invoke) => invoke.GetVariable(name));
}
public abstract CompiledDelegate Compile(CompileContext ctx);
