/// <summary>
/// Constructs a new method.
/// </summary>
/// <param name="unit">The target unit.</param>
/// <param name="methodBase">The target method.</param>
internal Method(CompileUnit unit, MethodBase methodBase)
{
if ((methodBase.MethodImplementationFlags & MethodImplAttributes.InternalCall) == MethodImplAttributes.InternalCall)
{
throw unit.CompilationContext.GetNotSupportedException(
ErrorMessages.RuntimeInternalMethodNotSupported, methodBase);
}
if ((methodBase.MethodImplementationFlags & MethodImplAttributes.Native) == MethodImplAttributes.Native)
{
throw unit.CompilationContext.GetNotSupportedException(
ErrorMessages.NativeMethodNotSupported, methodBase);
}
CompileUnit = unit;
Name = unit.GetLLVMName(methodBase);
MethodBase = methodBase;
if (methodBase is MethodInfo)
{
var genericArgs = methodBase.GetGenericArguments();
for (int i = 0, e = genericArgs.Length; i < e; ++i)
{
if (genericArgs[i].IsGenericParameter)
{
throw unit.CompilationContext.GetNotSupportedException(
ErrorMessages.NotSupportedGenericMethod, methodBase);
}
}
}
var functionType = unit.GetType(methodBase);
LLVMFunction = AddFunction(unit.LLVMModule, Name, functionType);
AddFunctionAttr(LLVMFunction, LLVMAttribute.LLVMAlwaysInlineAttribute);
SetLinkage(LLVMFunction, LLVMLinkage.LLVMInternalLinkage);
}
internal void Decompile(CompileUnit unit)
{
Debug.Assert(unit != null, "Invalid unit");
Disassemble(unit.CompilationContext);
using (var decompiler = new CodeGenerator(unit, this, DisassembledMethod))
{
decompiler.GenerateCode();
}
// Perform a simple pass over the method
RunFunctionPassManager(unit.CodeGenFunctionPassManager, LLVMFunction);
}
/// <summary>
/// Visits all call instructions and invokes the call handler for each
/// called method.
/// </summary>
/// <param name="callHandler">The handler to handle called methods.</param>
/// <param name="recursive">True, iff this method should be invoked on each called method recursively.</param>
public void VisitCalls(
Action <ILInstruction, Method> callHandler,
bool recursive)
{
foreach (var call in DisassembledMethod.DirectCallInstructions)
{
var m = CompileUnit.GetMethod(call.GetArgumentAs <MethodBase>(), false);
if (m == null)
{
continue;
}
callHandler(call, m);
if (recursive)
{
m.VisitCalls(callHandler);
}
}
}
/// <summary>
/// Constructs a new compilation context.
/// </summary>
/// <param name="compileUnit">The associated compile unit.</param>
public CompilationContext(CompileUnit compileUnit)
{
Debug.Assert(compileUnit != null, "Invalid compile unit");
CompileUnit = compileUnit;
NotSupportedILInstructionHandler = (sender, opCode) =>
{
switch (opCode)
{
case ILOpCode.Ldftn:
throw GetNotSupportedException(
ErrorMessages.NotSupportedILInstructionPossibleLambda,
opCode.ToString());
default:
throw GetNotSupportedException(
ErrorMessages.NotSupportedILInstruction,
opCode.ToString());
}
};
}
