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regex interpreter now can build partial correct AST (i forget groups), but in bad shape. building an optimizer.

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This commit is contained in:
Youmu Liu
2026-02-06 17:07:03 +08:00
parent 1bfb8b67c4
commit 3a441b270c
13 changed files with 236 additions and 31 deletions
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StgSharp.RegularAnalysis/Abstraction/CompileStack.cs
+32 -4
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@@ -47,7 +47,7 @@ namespace StgSharp.RegularAnalysis.Abstraction
public CompileStack()
{
_depthMarks.Push(new DepthMark(0, 0));
_depthMarks.Push(new DepthMark(0, 0, 0));
}
public int OperandInDepthCount
@@ -59,7 +59,7 @@ namespace StgSharp.RegularAnalysis.Abstraction
public int OperatorInDepthCount
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
get => _operands.Count - _depthMarks.Peek().OperandPos;
get => _operators.Count - _depthMarks.Peek().OperandPos;
}
public int Depth
@@ -108,6 +108,20 @@ namespace StgSharp.RegularAnalysis.Abstraction
return false;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public bool TryPeekOperator(
out TNode op
)
{
if (OperatorInDepthCount > 0)
{
op = _operators.Peek();
return true;
}
op = TNode.Empty;
return false;
}
#endregion
#region operand
@@ -117,7 +131,7 @@ namespace StgSharp.RegularAnalysis.Abstraction
)
{
if (OperatorInDepthCount > 0) {
return _operators.Pop();
return _operands.Pop();
}
return TNode.Empty;
}
@@ -127,7 +141,7 @@ namespace StgSharp.RegularAnalysis.Abstraction
TNode operatorNode
)
{
_operators.Push(operatorNode);
_operands.Push(operatorNode);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
@@ -144,6 +158,20 @@ namespace StgSharp.RegularAnalysis.Abstraction
return false;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public bool TryPeekOperand(
out TNode op
)
{
if (OperandInDepthCount > 0)
{
op = _operands.Peek();
return true;
}
op = TNode.Empty;
return false;
}
#endregion
#region depth