/// <summary>
/// Creates an if context object.
/// </summary>
/// <param name="active">Flag if context is currently active.</param>
/// <param name="keep">Flag if context is currently true.</param>
/// <param name="state">State of context to start in.</param>
public IfContext(bool active, bool keep, IfState state)
{
this.active = active;
this.keep = keep;
this.everKept = keep;
this.state = state;
}
/// <summary>
/// Creates an if context object.
/// </summary>
/// <param name="active">Flag if context is currently active.</param>
/// <param name="keep">Flag if context is currently true.</param>
/// <param name="state">State of context to start in.</param>
public IfContext(bool active, bool keep, IfState state)
{
this.active = active;
this.keep = keep;
this.everKept = keep;
this.state = state;
}
/// <summary>
/// Initializes a new instance of the <see cref="IfContext"/> class.
/// </summary>
/// <param name="active">if set to <c>true</c> [active].</param>
/// <param name="keep">if set to <c>true</c> [keep].</param>
/// <param name="state">The state.</param>
public IfContext(bool active, bool keep, IfState state)
{
m_Active = active;
m_Keep = keep;
m_EverKept = keep;
m_State = state;
}
/// <summary>
/// Initializes a new instance of the <see cref="IfContext"/> class.
/// </summary>
/// <param name="active">if set to <c>true</c> [active].</param>
/// <param name="keep">if set to <c>true</c> [keep].</param>
/// <param name="state">The state.</param>
public IfContext(bool active, bool keep, IfState state)
{
m_Active = active;
m_Keep = keep;
m_EverKept = keep;
m_State = state;
}
/// <summary>
/// Creates a default if context object, which are used for if's within an inactive preprocessor block
/// </summary>
public IfContext()
{
this.active = false;
this.keep = false;
this.everKept = true;
this.state = IfState.If;
}
/// <summary>
/// Creates an if context object.
/// </summary>
/// <param name="active">Flag if context is currently active.</param>
/// <param name="keep">Flag if context is currently true.</param>
/// <param name="state">State of context to start in.</param>
public IfContext(bool active, bool keep, IfState state)
{
this.Active = active;
this.keep = keep;
this.WasEverTrue = keep;
this.IfState = IfState.If;
}
/// <summary>
/// Creates a default if context object, which are used for if's within an inactive preprocessor block
/// </summary>
public IfContext()
{
this.active = false;
this.keep = false;
this.everKept = true;
this.state = IfState.If;
}
public override IEnumerator ReceivePayload(VisualPayload payload)
{
IEnumerator iterator = MeetsCriterion(payload) ?
IfState.Transmit(payload)
: ElseState.Transmit(payload);
while (iterator.MoveNext())
{
yield return(null);
}
}
internal void InitElseIf() {
Debug.Assert(initElseIfStack == -1);
elseIfState = (IfState)blockStack.Pop();
initElseIfStack = blockStack.Count;
Br(elseIfState.EndIf);
MarkLabel(elseIfState.ElseBegin);
}
void InternalIf(bool negate) {
IfState ifState = new IfState();
ifState.EndIf = DefineLabel();
ifState.ElseBegin = DefineLabel();
if (negate)
Brtrue(ifState.ElseBegin);
else
Brfalse(ifState.ElseBegin);
blockStack.Push(ifState);
}
internal void InitElseIf()
{
Debug.Assert(_initElseIfStack == -1);
_elseIfState = (IfState)_blockStack.Pop();
_initElseIfStack = _blockStack.Count;
Br(_elseIfState.EndIf);
MarkLabel(_elseIfState.ElseBegin);
}
private void InternalIf(bool negate)
{
IfState state = new IfState();
state.EndIf = this.DefineLabel();
state.ElseBegin = this.DefineLabel();
if (negate)
{
this.Brtrue(state.ElseBegin);
}
else
{
this.Brfalse(state.ElseBegin);
}
this.blockStack.Push(state);
}
/// <summary>
/// If
/// </summary>
/// <param name="cmpOp"></param>
public void If(Cmp cmpOp)
{
IfState state = new IfState();
state.EndIf = this.DefineLabel();
state.ElseBegin = this.DefineLabel();
this.ilGen.Emit(this.GetBranchCode(cmpOp), state.ElseBegin);
this.blockStack.Push(state);
}
/// <summary>Initializes a new instance of the <see cref="If"/> class.</summary>
internal If(IfState state, ImmutableCollection collection)
{
State = state;
Collection = collection;
}
internal void If(Cmp cmpOp)
{
IfState ifState = new IfState();
ifState.EndIf = DefineLabel();
ifState.ElseBegin = DefineLabel();
if (codeGenTrace != CodeGenTrace.None)
EmitSourceInstruction("Branch if " + GetCmpInverse(cmpOp).ToString() + " to " + ifState.ElseBegin.GetHashCode().ToString(NumberFormatInfo.InvariantInfo));
ilGen.Emit(GetBranchCode(cmpOp), ifState.ElseBegin);
blockStack.Push(ifState);
}
internal void While(object value1, Cmp cmpOp, object value2)
{
IfState ifState = new IfState();
ifState.EndIf = DefineLabel();
ifState.ElseBegin = DefineLabel();
ilGen.MarkLabel(ifState.ElseBegin);
Load(value1);
Load(value2);
if (codeGenTrace != CodeGenTrace.None)
EmitSourceInstruction("Branch if " + CmpInverse[(int) cmpOp].ToString() + " to " + ifState.ElseBegin.GetHashCode().ToString());
ilGen.Emit(BranchCode[(int)cmpOp], ifState.EndIf);
blockStack.Push(ifState);
}
internal void If(Cmp cmpOp) {
IfState ifState = new IfState();
ifState.EndIf = DefineLabel();
ifState.ElseBegin = DefineLabel();
ilGen.Emit(GetBranchCode(cmpOp), ifState.ElseBegin);
blockStack.Push(ifState);
}
internal void If(Cmp cmpOp)
{
IfState state = new IfState {
EndIf = this.DefineLabel(),
ElseBegin = this.DefineLabel()
};
if (this.codeGenTrace != CodeGenTrace.None)
{
this.EmitSourceInstruction("Branch if " + this.GetCmpInverse(cmpOp).ToString() + " to " + state.ElseBegin.GetHashCode().ToString(NumberFormatInfo.InvariantInfo));
}
this.ilGen.Emit(this.GetBranchCode(cmpOp), state.ElseBegin);
this.blockStack.Push(state);
}