示例#1
0
        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);
        }