public DelegateCodeGen(CodeGenerator cg, DelegateBindingInfo delegateBindingInfo, int index)
{
this.cg = cg;
var nargs = delegateBindingInfo.parameters.Length;
var retName = this.cg.bindingManager.GetUniqueName(delegateBindingInfo.parameters, "ret");
var firstArgument = typeof(DuktapeDelegate) + " fn";
var returnTypeName = this.cg.bindingManager.GetCSTypeFullName(delegateBindingInfo.returnType);
var delegateName = DuktapeVM._DuktapeDelegates + index;
var arglist = this.cg.bindingManager.GetCSArglistDecl(delegateBindingInfo.parameters);
foreach (var target in delegateBindingInfo.types)
{
this.cg.cs.AppendLine("[{0}(typeof({1}))]",
this.cg.bindingManager.GetCSTypeFullName(typeof(JSDelegateAttribute)),
this.cg.bindingManager.GetCSTypeFullName(target));
this.cg.bindingManager.log.AppendLine("emitting delegate decl: {0}", target);
}
if (!string.IsNullOrEmpty(arglist))
{
arglist = ", " + arglist;
}
this.cg.cs.AppendLine($"public static {returnTypeName} {delegateName}({firstArgument}{arglist}) {{");
this.cg.cs.AddTabLevel();
this.cg.cs.AppendLine("var ctx = fn.ctx;");
this.cg.cs.AppendLine("if (ctx == IntPtr.Zero)");
this.cg.cs.AppendLine("{");
this.cg.cs.AddTabLevel();
this.cg.cs.AppendLine("throw new InvalidOperationException(\"duktape vm context has already been released.\");");
this.cg.cs.DecTabLevel();
this.cg.cs.AppendLine("}");
if (nargs > 0)
{
this.cg.cs.AppendLine("fn.BeginInvoke(ctx);");
for (var i = 0; i < nargs; i++)
{
var parameter = delegateBindingInfo.parameters[i];
this.cg.AppendPushValue(parameter.ParameterType, parameter.Name);
}
this.cg.cs.AppendLine("fn.EndInvoke(ctx);");
}
else
{
this.cg.cs.AppendLine("fn.BeginInvoke(ctx);");
this.cg.cs.AppendLine("fn.EndInvoke(ctx);");
}
if (delegateBindingInfo.returnType != typeof(void))
{
this.cg.cs.AppendLine($"{this.cg.bindingManager.GetCSTypeFullName(delegateBindingInfo.returnType)} {retName};");
this.cg.cs.AppendLine(this.cg.bindingManager.GetDuktapeGetter(delegateBindingInfo.returnType, "ctx", "-1", retName));
this.cg.cs.AppendLine("DuktapeDLL.duk_pop(ctx);");
this.cg.cs.AppendLine($"return {retName};");
}
else
{
this.cg.cs.AppendLine("DuktapeDLL.duk_pop(ctx);");
}
}
public void OnPostGenerateDelegate(DelegateBindingInfo bindingInfo)
{
for (int i = 0, size = _bindingProcess.Count; i < size; i++)
{
var bp = _bindingProcess[i];
try
{
bp.OnPostGenerateDelegate(this, bindingInfo);
}
catch (Exception exception)
{
this.Error($"process failed [{bp}][OnPostGenerateDelegate]: {exception}");
}
}
}
// 收集所有 delegate 类型
public void CollectDelegate(Type type)
{
if (type == null || type.BaseType != typeof(MulticastDelegate))
{
return;
}
if (!exportedDelegates.ContainsKey(type))
{
var invoke = type.GetMethod("Invoke");
var returnType = invoke.ReturnType;
var parameters = invoke.GetParameters();
if (ContainsPointer(invoke))
{
log.AppendLine("skip unsafe (pointer) delegate: [{0}] {1}", type, invoke);
return;
}
// 是否存在等价 delegate
foreach (var kv in exportedDelegates)
{
if (kv.Value.Equals(returnType, parameters))
{
log.AppendLine("skip delegate: {0} && {1}", kv.Value, type);
kv.Value.types.Add(type);
redirectDelegates[type] = kv.Key;
return;
}
}
var delegateBindingInfo = new DelegateBindingInfo(returnType, parameters);
delegateBindingInfo.types.Add(type);
exportedDelegates.Add(type, delegateBindingInfo);
log.AppendLine("add delegate: {0}", type);
for (var i = 0; i < parameters.Length; i++)
{
CollectDelegate(parameters[i].ParameterType);
}
}
}
public void Generate()
{
var cg = new CodeGenerator(this);
var outDir = prefs.outDir;
var tx = prefs.extraExt;
// var tx = "";
if (!Directory.Exists(outDir))
{
Directory.CreateDirectory(outDir);
}
var cancel = false;
var current = 0;
var total = exportedTypes.Count;
foreach (var typeKV in exportedTypes)
{
var typeBindingInfo = typeKV.Value;
try
{
current++;
cancel = EditorUtility.DisplayCancelableProgressBar(
"Generating",
$"{current}/{total}: {typeBindingInfo.FullName}",
(float)current / total);
if (cancel)
{
Warn("operation canceled");
break;
}
if (!typeBindingInfo.omit)
{
cg.Clear();
OnPreGenerateType(typeBindingInfo);
cg.Generate(typeBindingInfo);
OnPostGenerateType(typeBindingInfo);
cg.WriteTo(outDir, typeBindingInfo.GetFileName(), tx);
}
}
catch (Exception exception)
{
Error($"generate failed {typeBindingInfo.type.FullName}: {exception.Message}");
Debug.LogError(exception.StackTrace);
}
}
if (!cancel)
{
try
{
var exportedDelegatesArray = new DelegateBindingInfo[this.exportedDelegates.Count];
this.exportedDelegates.Values.CopyTo(exportedDelegatesArray, 0);
cg.Clear();
cg.Generate(exportedDelegatesArray);
// cg.tsSource.enabled = false;
cg.WriteTo(outDir, DuktapeVM._DuktapeDelegates, tx);
}
catch (Exception exception)
{
Error($"generate delegates failed: {exception.Message}");
Debug.LogError(exception.StackTrace);
}
}
var logPath = prefs.logPath;
File.WriteAllText(logPath, log.ToString());
EditorUtility.ClearProgressBar();
}
public virtual void OnPostGenerateDelegate(BindingManager bindingManager, DelegateBindingInfo bindingInfo)
{
}
