internal LLVMValueRef StartMethod(string pName, Syntax.MethodSyntax pNode)
{
var func = LLVM.GetNamedFunction(CurrentModule, pName);
Debug.Assert(func.Pointer != IntPtr.Zero);
Locals.AddScope();
AddDebugScope(pNode.Span);
//Emit body
var body = LLVM.AppendBasicBlock(func, pName + "body");
LLVM.PositionBuilderAtEnd(Builder, body);
int start = 0;
if (CurrentStruct != null)
{
start = 1;
LLVMValueRef p = LLVM.GetParam(func, 0);
LLVM.SetValueName(p, "self");
Locals.DefineVariableInScope("self", LocalDefinition.CreateParameter(p, CurrentStruct));
EmitDebugParameter("self", CurrentStruct, pNode.Span.Line, 0);
}
//Set parameter names and define in scope
for (int i = 0; i < pNode.Parameters.Count; i++)
{
string name = pNode.Parameters[i].Value;
LLVMValueRef parm = LLVM.GetParam(func, (uint)(i + start));
LLVM.SetValueName(parm, name);
EmitDebugParameter(name, pNode.Parameters[i].Type, pNode.Span.Line, i + start);
Debug.Assert(!Locals.IsVariableDefinedInScope(name), $"Parameter {name} already defined");
Locals.DefineVariableInScope(name, LocalDefinition.CreateParameter(parm, pNode.Parameters[i].Type));
}
EmitFunctionDebugInfo(pNode, func);
CurrentMethod = func;
return(func);
}