private static CompiledLambda CompileToDynamicMethod(
LambdaExpression lambda,
ParsedLambda parsedLambda,
CompilerOptions options,
bool internalCall,
List <CompiledLambda> compiledLambdas)
{
var parameters = lambda.Parameters.ToArray();
var parameterTypes = parameters.Select(parameter => parameter.Type).ToArray();
var returnType = lambda.ReturnType;
var method = new DynamicMethod(lambda.Name ?? Guid.NewGuid().ToString(), MethodAttributes.Static | MethodAttributes.Public, CallingConventions.Standard, returnType, parameterTypes, Module, true);
using (var il = new GroboIL(method, AnalyzeILStack))
{
var context = new EmittingContext
{
Options = options,
Lambda = lambda,
Method = method,
SkipVisibility = true,
Parameters = parameters,
ParsedLambda = parsedLambda,
CompiledLambdas = compiledLambdas,
Il = il
};
CompileInternal(lambda, context);
}
return(new CompiledLambda
{
Delegate = Extensions.IsMono && internalCall?method.CreateDelegate(Extensions.GetDelegateType(parameterTypes, returnType))
: method.CreateDelegate(Extensions.GetDelegateType(parsedLambda.ConstantsParameter == null ? parameterTypes : parameterTypes.Skip(1).ToArray(), lambda.ReturnType), parsedLambda.Constants),
Method = method
});
}
internal static void CompileToMethodInternal(
LambdaExpression lambda,
DebugInfoGenerator debugInfoGenerator,
ParsedLambda parsedLambda,
CompilerOptions options,
List <CompiledLambda> compiledLambdas,
MethodBuilder method)
{
var typeBuilder = method.ReflectedType as TypeBuilder;
if (typeBuilder == null)
{
throw new ArgumentException("Unable to obtain type builder of the method", "method");
}
using (var il = new GroboIL(method, AnalyzeILStack))
{
var context = new EmittingContext
{
Options = options,
DebugInfoGenerator = debugInfoGenerator,
TypeBuilder = typeBuilder,
Lambda = lambda,
Method = method,
SkipVisibility = false,
Parameters = lambda.Parameters.ToArray(),
ParsedLambda = parsedLambda,
CompiledLambdas = compiledLambdas,
Il = il
};
CompileInternal(lambda, context);
}
}
private static Action <object, Delegate[]> BuildDelegatesFoister(ParsedLambda parsedLambda)
{
var constants = Expression.Parameter(typeof(object));
var delegates = Expression.Parameter(typeof(Delegate[]));
var castedConstants = Expression.Parameter(parsedLambda.ConstantsType);
var body = Expression.Block(new[] { castedConstants },
Expression.Assign(castedConstants, Expression.Convert(constants, parsedLambda.ConstantsType)),
parsedLambda.ConstantsBuilder.Assign(castedConstants, parsedLambda.DelegatesFieldId, delegates));
var lambda = Expression.Lambda <Action <object, Delegate[]> >(body, constants, delegates);
return(Compile(lambda, CompilerOptions.None));
}
internal static CompiledLambda CompileInternal(
LambdaExpression lambda,
DebugInfoGenerator debugInfoGenerator,
ParsedLambda parsedLambda,
CompilerOptions options,
bool internalCall,
List <CompiledLambda> compiledLambdas)
{
if (debugInfoGenerator == null)
{
return(CompileToDynamicMethod(lambda, parsedLambda, options, internalCall, compiledLambdas));
}
var parameters = lambda.Parameters.ToArray();
var parameterTypes = parameters.Select(parameter => parameter.Type).ToArray();
var returnType = lambda.ReturnType;
var typeBuilder = Module.DefineType(Guid.NewGuid().ToString(), TypeAttributes.Public | TypeAttributes.Class);
var method = typeBuilder.DefineMethod(lambda.Name ?? Guid.NewGuid().ToString(), MethodAttributes.Static | MethodAttributes.Public, returnType, parameterTypes);
for (var i = 0; i < parameters.Length; ++i)
{
method.DefineParameter(i + 1, ParameterAttributes.None, parameters[i].Name);
}
CompileToMethodInternal(lambda, debugInfoGenerator, parsedLambda, options, compiledLambdas, method);
var type = typeBuilder.CreateType();
var dynamicMethod = new DynamicMethod(Guid.NewGuid().ToString(), returnType, parameterTypes, Module, true);
using (var il = new GroboIL(dynamicMethod))
{
for (var i = 0; i < parameterTypes.Length; ++i)
{
il.Ldarg(i);
}
il.Call(type.GetMethod(method.Name));
il.Ret();
}
return(new CompiledLambda
{
Delegate = Extensions.IsMono && internalCall?dynamicMethod.CreateDelegate(Extensions.GetDelegateType(parameterTypes, returnType))
: dynamicMethod.CreateDelegate(Extensions.GetDelegateType(parsedLambda.ConstantsParameter == null ? parameterTypes : parameterTypes.Skip(1).ToArray(), lambda.ReturnType), parsedLambda.Constants),
Method = method
});
}
