public override void Compile(Execution.VM.ByteCode bc)
{
List<Instruction> endJumps = new List<Instruction>();
Instruction lastIfJmp = null;
foreach (var ifblock in m_Ifs)
{
using (bc.EnterSource(ifblock.Source))
{
if (lastIfJmp != null)
lastIfJmp.NumVal = bc.GetJumpPointForNextInstruction();
ifblock.Exp.Compile(bc);
lastIfJmp = bc.Emit_Jump(OpCode.Jf, -1);
bc.Emit_Enter(ifblock.StackFrame);
ifblock.Block.Compile(bc);
}
using (bc.EnterSource(m_End))
bc.Emit_Leave(ifblock.StackFrame);
endJumps.Add(bc.Emit_Jump(OpCode.Jump, -1));
}
lastIfJmp.NumVal = bc.GetJumpPointForNextInstruction();
if (m_Else != null)
{
using (bc.EnterSource(m_Else.Source))
{
bc.Emit_Enter(m_Else.StackFrame);
m_Else.Block.Compile(bc);
}
using (bc.EnterSource(m_End))
bc.Emit_Leave(m_Else.StackFrame);
}
foreach(var endjmp in endJumps)
endjmp.NumVal = bc.GetJumpPointForNextInstruction();
}
public override void Compile(Execution.VM.ByteCode bc)
{
m_Exp1.Compile(bc);
if (m_Operator == Operator.Or)
{
Instruction i = bc.Emit_Jump(OpCode.JtOrPop, -1);
m_Exp2.Compile(bc);
i.NumVal = bc.GetJumpPointForNextInstruction();
return;
}
if (m_Operator == Operator.And)
{
Instruction i = bc.Emit_Jump(OpCode.JfOrPop, -1);
m_Exp2.Compile(bc);
i.NumVal = bc.GetJumpPointForNextInstruction();
return;
}
if (m_Exp2 != null)
{
m_Exp2.Compile(bc);
}
bc.Emit_Operator(OperatorToOpCode(m_Operator));
if (ShouldInvertBoolean(m_Operator))
bc.Emit_Operator(OpCode.Not);
}