private void ReadExceptions(IList <ExceptionHandlingClause> exceptionClauses)
{
foreach (var exceptionClause in exceptionClauses)
{
var handler = new ExceptionHandler((ExceptionHandlerType)exceptionClause.Flags);
handler.TryStart = GetInstruction(exceptionClause.TryOffset);
handler.TryEnd = GetInstruction(handler.TryStart.Offset + exceptionClause.TryLength);
handler.HandlerStart = GetInstruction(exceptionClause.HandlerOffset);
handler.HandlerEnd = GetInstruction(handler.HandlerStart.Offset + exceptionClause.HandlerLength);
switch (handler.HandlerType)
{
case ExceptionHandlerType.Catch:
var token = new MetadataToken((uint)exceptionClause.CatchType.MetadataToken);
handler.CatchType = resolveTokens ? ResolveToken(token) : token;
break;
case ExceptionHandlerType.Filter:
handler.FilterStart = GetInstruction(exceptionClause.FilterOffset);
break;
}
ExceptionHandlers.Add(handler);
}
}
private unsafe void ReadExceptions(DynamicResolver dynamicResolver, int excCount)
{
var buf = stackalloc CORINFO_EH_CLAUSE[1];
var exceptionClause = &buf[0];
for (int i = 0; i < excCount; ++i)
{
dynamicResolver.GetEHInfo(i, exceptionClause);
var handler = new ExceptionHandler((ExceptionHandlerType)exceptionClause->Flags);
handler.TryStart = GetInstruction(exceptionClause->TryOffset);
handler.TryEnd = GetInstruction(handler.TryStart.Offset + exceptionClause->TryLength);
handler.HandlerStart = GetInstruction(exceptionClause->HandlerOffset);
handler.HandlerEnd = GetInstruction(handler.HandlerStart.Offset + exceptionClause->HandlerLength);
switch (handler.HandlerType)
{
case ExceptionHandlerType.Catch:
var token = new MetadataToken((uint)exceptionClause->ClassTokenOrFilterOffset);
handler.CatchType = resolveTokens ? ResolveToken(token) : token;
break;
case ExceptionHandlerType.Filter:
handler.FilterStart = GetInstruction(exceptionClause->ClassTokenOrFilterOffset);
break;
}
ExceptionHandlers.Add(handler);
}
}
internal ByteCodeMethodBody(JavaClassImage classImage, CodeAttribute attribute)
{
MaxStack = attribute.MaxStack;
// Read instructions.
var disassembler = new ByteCodeDisassembler(new MemoryBigEndianReader(attribute.Code))
{
OperandResolver = new DefaultOperandResolver(classImage)
};
foreach (var instruction in disassembler.ReadInstructions())
{
Instructions.Add(instruction);
}
// Read exception handlers.
foreach (var handler in attribute.ExceptionHandlers)
{
ExceptionHandlers.Add(new ExceptionHandler(classImage, this, handler));
}
// Read attributes.
foreach (var attr in attribute.Attributes)
{
string name = classImage.ClassFile.ConstantPool.ResolveString(attr.NameIndex);
switch (name)
{
// Local variables
case LocalVariableTableAttribute.AttributeName:
var localsTable = LocalVariableTableAttribute.FromReader(new MemoryBigEndianReader(attr.Contents));
foreach (var info in localsTable.LocalVariables)
{
Variables.Add(new LocalVariable(classImage, this, info));
}
break;
default:
ExtraAttributes.Add(name, attr.Clone());
break;
}
}
}