protected void WriteCode(CodeGen code_gen, PEAPI.MethodDef methoddef)
{
/// Add the custrom attributes to this method
if (customattr_list != null)
{
foreach (CustomAttr customattr in customattr_list)
{
customattr.AddTo(code_gen, methoddef);
if (customattr.IsSuppressUnmanaged(code_gen))
{
methoddef.AddMethAttribute(PEAPI.MethAttr.HasSecurity);
}
}
}
/// Add declarative security to this method
if (decl_sec != null)
{
decl_sec.AddTo(code_gen, methoddef);
methoddef.AddMethAttribute(PEAPI.MethAttr.HasSecurity);
}
// Generic type parameters
if (gen_params != null)
{
gen_params.Resolve(code_gen, methoddef);
}
if (type_def == null)
{
//Global method
meth_attr &= ~PEAPI.MethAttr.Abstract;
meth_attr |= PEAPI.MethAttr.Static;
}
else
{
if ((inst_list.Count > 0) && type_def.IsInterface && !IsStatic)
{
Report.Error(start, "Method cannot have body if it is non-static declared in an interface");
}
if (IsAbstract)
{
if (!type_def.IsAbstract)
{
Report.Error(start, String.Format("Abstract method '{0}' in non-abstract class '{1}'",
Name, type_def.FullName));
}
if (inst_list.Count > 0)
{
Report.Error(start, "Method cannot have body if it is abstract.");
}
return;
}
}
if (entry_point)
{
methoddef.DeclareEntryPoint();
}
if (local_list.Count > 0)
{
int ec = Report.ErrorCount;
PEAPI.Local[] local_array = new PEAPI.Local[local_list.Count];
foreach (Local local in local_list)
{
local_array[local.Slot] = local.GetPeapiLocal(code_gen);
}
if (Report.ErrorCount > ec)
{
return;
}
if (zero_init)
{
init_locals = true;
}
methoddef.AddLocals(local_array, init_locals);
}
/// Nothing seems to work if maxstack is not set,
/// i need to find out if this NEEDs to be set
/// and what its default value should be
if (max_stack < 0)
{
max_stack = 8;
}
methoddef.SetMaxStack(max_stack);
if (pinvoke_info)
{
methoddef.AddPInvokeInfo(pinvoke_mod.ModuleRef,
(pinvoke_name != null ? pinvoke_name : name), pinvoke_attr);
}
if ((impl_attr & PEAPI.ImplAttr.Runtime) == PEAPI.ImplAttr.Runtime)
{
if (inst_list.Count > 0)
{
Report.Error(start, String.Format("Method cannot have body if it is non-IL runtime-supplied, '{0}'",
FullName));
}
}
else
{
if (((impl_attr & PEAPI.ImplAttr.Native) != 0) ||
((impl_attr & PEAPI.ImplAttr.Unmanaged) != 0))
{
Report.Error(start, String.Format("Cannot compile native/unmanaged method, '{0}'",
FullName));
}
}
if (inst_list.Count > 0)
{
/* Has body */
if ((impl_attr & PEAPI.ImplAttr.InternalCall) != 0)
{
Report.Error(start, String.Format("Method cannot have body if it is an internal call, '{0}'",
FullName));
}
if (pinvoke_info)
{
Report.Error(start, String.Format("Method cannot have body if it is pinvoke, '{0}'",
FullName));
}
}
else
{
if (pinvoke_info ||
((impl_attr & PEAPI.ImplAttr.Runtime) != 0) ||
((impl_attr & PEAPI.ImplAttr.InternalCall) != 0))
{
/* No body required */
return;
}
Report.Warning(start, "Method has no body, 'ret' emitted.");
AddInstr(new SimpInstr(PEAPI.Op.ret, start));
}
PEAPI.CILInstructions cil = methoddef.CreateCodeBuffer();
/// Create all the labels
/// TODO: Most labels don't actually need to be created so we could
/// probably only create the ones that need to be
LabelInfo[] label_info = new LabelInfo[label_table.Count + label_list.Count];
label_table.Values.CopyTo(label_info, 0);
label_list.CopyTo(label_info, label_table.Count);
int previous_pos = -1;
LabelInfo previous_label = null;
Array.Sort(label_info);
foreach (LabelInfo label in label_info)
{
if (label.UseOffset)
{
label.Define(new PEAPI.CILLabel(label.Offset, true));
continue;
}
if (label.Pos == previous_pos)
{
label.Label = previous_label.Label;
}
else
{
label.Define(cil.NewLabel());
}
previous_label = label;
previous_pos = label.Pos;
}
// Set all the label refs
foreach (LabelInfo label in labelref_table.Values)
{
LabelInfo def = (LabelInfo)label_table[label.Name];
if (def == null)
{
Report.Error("Undefined Label: " + label);
return;
}
label.Label = def.Label;
}
int label_pos = 0;
int next_label_pos = (label_info.Length > 0 ? label_info[0].Pos : -1);
for (int i = 0; i < inst_list.Count; i++)
{
IInstr instr = (IInstr)inst_list[i];
if (next_label_pos == i)
{
cil.CodeLabel(label_info[label_pos].Label);
if (label_pos < label_info.Length)
{
while (next_label_pos == i && ++label_pos < label_info.Length)
{
if (label_info[label_pos].UseOffset)
{
cil.CodeLabel(label_info[label_pos].Label);
}
next_label_pos = label_info[label_pos].Pos;
}
}
if (label_pos >= label_info.Length)
{
next_label_pos = -1;
}
}
if (source != null)
{
source.MarkLocation(instr.Location.line, cil.Offset);
}
instr.Emit(code_gen, this, cil);
}
if (source != null)
{
source.MarkLocation(source.EndLine, cil.Offset);
}
}
public void AddInstr (IInstr instr)
{
inst_list.Add (instr);
}
public void AddInstr(IInstr instr)
{
inst_list.Add(instr);
}