public static GenericMethodDescriptor ParseMethodSignature(string signature)
{
string original = signature;
try
{
List <string> typeParameters = new List <string>();
List <List <GenericType> > typeParameterBounds = new List <List <GenericType> >();
signature = ParseFormalParameters(signature, typeParameters, typeParameterBounds);
int to = signature.IndexOf(")");
string parameters = Sharpen.Runtime.Substring(signature, 1, to);
signature = Sharpen.Runtime.Substring(signature, to + 1);
List <GenericType> parameterTypes = new List <GenericType>();
while (parameters.Length > 0)
{
string par = GenericType.GetNextType(parameters);
parameterTypes.Add(new GenericType(par));
parameters = Sharpen.Runtime.Substring(parameters, par.Length);
}
string ret = GenericType.GetNextType(signature);
GenericType returnType = new GenericType(ret);
signature = Sharpen.Runtime.Substring(signature, ret.Length);
List <GenericType> exceptionTypes = new List <GenericType>();
if (signature.Length > 0)
{
string[] exceptions = signature.Split("\\^");
for (int i = 1; i < exceptions.Length; i++)
{
exceptionTypes.Add(new GenericType(exceptions[i]));
}
}
return(new GenericMethodDescriptor(typeParameters, typeParameterBounds, parameterTypes
, returnType, exceptionTypes));
}
catch (Exception)
{
DecompilerContext.GetLogger().WriteMessage("Invalid signature: " + original, IFernflowerLogger.Severity
.Warn);
return(null);
}
}
private static void AppendTypeArguments(GenericType type, StringBuilder buffer)
{
if (!(type.GetArguments().Count == 0))
{
buffer.Append('<');
for (int i = 0; i < type.GetArguments().Count; i++)
{
if (i > 0)
{
buffer.Append(", ");
}
int wildcard = type.GetWildcards()[i];
switch (wildcard)
{
case GenericType.Wildcard_Unbound:
{
buffer.Append('?');
break;
}
case GenericType.Wildcard_Extends:
{
buffer.Append("? extends ");
break;
}
case GenericType.Wildcard_Super:
{
buffer.Append("? super ");
break;
}
}
GenericType genPar = type.GetArguments()[i];
if (genPar != null)
{
buffer.Append(GetGenericCastTypeName(genPar));
}
}
buffer.Append(">");
}
}
private static void ParseArgumentsList(string value, GenericType type)
{
if (value == null)
{
return;
}
while (value.Length > 0)
{
string typeStr = GetNextType(value);
int len = typeStr.Length;
int wildcard = Wildcard_No;
switch (typeStr[0])
{
case '*':
{
wildcard = Wildcard_Unbound;
break;
}
case '+':
{
wildcard = Wildcard_Extends;
break;
}
case '-':
{
wildcard = Wildcard_Super;
break;
}
}
type.GetWildcards().Add(wildcard);
if (wildcard != Wildcard_No)
{
typeStr = Sharpen.Runtime.Substring(typeStr, 1);
}
type.GetArguments().Add(typeStr.Length == 0 ? null : new GenericType(typeStr));
value = Sharpen.Runtime.Substring(value, len);
}
}
private static string GetTypeName(GenericType type)
{
int tp = type.type;
if (tp <= ICodeConstants.Type_Boolean)
{
return(typeNames[tp]);
}
else if (tp == ICodeConstants.Type_Void)
{
return("void");
}
else if (tp == ICodeConstants.Type_Genvar)
{
return(type.value);
}
else if (tp == ICodeConstants.Type_Object)
{
StringBuilder buffer = new StringBuilder();
AppendClassName(type, buffer);
return(buffer.ToString());
}
throw new Exception("Invalid type: " + type);
}
public GenericMethodDescriptor(List <string> typeParameters, List <List <GenericType
> > typeParameterBounds, List <GenericType> parameterTypes, GenericType returnType
, List <GenericType> exceptionTypes)
{
this.typeParameters = Substitute(typeParameters);
this.typeParameterBounds = Substitute(typeParameterBounds);
this.parameterTypes = Substitute(parameterTypes);
this.returnType = returnType;
this.exceptionTypes = Substitute(exceptionTypes);
}
public GenericType(string signature)
{
int type = 0;
int arrayDim = 0;
string value = null;
int index = 0;
while (index < signature.Length)
{
switch (signature[index])
{
case '[':
{
arrayDim++;
break;
}
case 'T':
{
type = ICodeConstants.Type_Genvar;
value = Sharpen.Runtime.Substring(signature, index + 1, signature.Length - 1);
goto loop_break;
}
case 'L':
{
type = ICodeConstants.Type_Object;
signature = Sharpen.Runtime.Substring(signature, index + 1, signature.Length - 1);
while (true)
{
string cl = GetNextClassSignature(signature);
string name = cl;
string args = null;
int argStart = cl.IndexOf("<");
if (argStart >= 0)
{
name = Sharpen.Runtime.Substring(cl, 0, argStart);
args = Sharpen.Runtime.Substring(cl, argStart + 1, cl.Length - 1);
}
if (cl.Length < signature.Length)
{
signature = Sharpen.Runtime.Substring(signature, cl.Length + 1);
// skip '.'
GenericType type11 = new GenericType(ICodeConstants.Type_Object, 0, name);
ParseArgumentsList(args, type11);
enclosingClasses.Add(type11);
}
else
{
value = name;
ParseArgumentsList(args, this);
break;
}
}
goto loop_break;
}
default:
{
value = Sharpen.Runtime.Substring(signature, index, index + 1);
type = VarType.GetType(value[0]);
break;
}
}
index++;
loop_continue :;
}
loop_break :;
this.type = type;
this.arrayDim = arrayDim;
this.value = value;
}
public GenericFieldDescriptor(GenericType type)
{
this.type = type;
}
private static string ParseFormalParameters(string signature, List <string
> parameters, List <List <GenericType> > bounds)
{
if (signature[0] != '<')
{
return(signature);
}
int counter = 1;
int index = 1;
while (index < signature.Length)
{
switch (signature[index])
{
case '<':
{
counter++;
break;
}
case '>':
{
counter--;
if (counter == 0)
{
goto loop_break;
}
break;
}
}
index++;
loop_continue :;
}
loop_break :;
string value = Sharpen.Runtime.Substring(signature, 1, index);
signature = Sharpen.Runtime.Substring(signature, index + 1);
while (value.Length > 0)
{
int to = value.IndexOf(":");
string param = Sharpen.Runtime.Substring(value, 0, to);
value = Sharpen.Runtime.Substring(value, to + 1);
List <GenericType> lstBounds = new List <GenericType>();
while (true)
{
if (value[0] == ':')
{
// empty superclass, skip
value = Sharpen.Runtime.Substring(value, 1);
}
string bound = GenericType.GetNextType(value);
lstBounds.Add(new GenericType(bound));
value = Sharpen.Runtime.Substring(value, bound.Length);
if (value.Length == 0 || value[0] != ':')
{
break;
}
else
{
value = Sharpen.Runtime.Substring(value, 1);
}
}
parameters.Add(param);
bounds.Add(lstBounds);
}
return(signature);
}