discuss regex ir opt
This commit is contained in:
Youmu Liu
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//-----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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// file="RegexIR"
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// Project: StgSharp
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// AuthorGroup: Nitload
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// Copyright (c) Nitload. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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//
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// -----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Runtime.CompilerServices;
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using System.Text;
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using System.Threading.Tasks;
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namespace StgSharp.RegularAnalysis.Text
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{
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internal enum RegexIRCommand
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{
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Match_Seq = 0,
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Match_Set = 1,
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Condition = 3,
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Try = 4,
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Count = 5,
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Count_Seq = 6,
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Count_Set = 7,
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Pop = 8,
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Pack = 9,
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}
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internal abstract class RegexHIR
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{
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internal abstract RegexIRCommand Command { get; }
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internal abstract string AsCommand(
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int lineNum
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);
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}
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/// <summary>
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/// Searches for a certain string pattern or charset from current position.
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/// </summary>
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internal sealed class RegexMatchSeqHIR(
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string pattern
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) : RegexHIR
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{
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public string Pattern { get; } = pattern;
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internal override RegexIRCommand Command => RegexIRCommand.Match_Seq;
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internal override string AsCommand(
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int lineNum
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)
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{
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return $"[{lineNum}]\t MATCH_SEQ \"{(string.IsNullOrEmpty(Pattern) ? "<EPSILON>" : Pattern)}\"";
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}
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}
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internal sealed class RegexMatchSetHIR(
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string charset
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) : RegexHIR
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{
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public string Charset { get; } = charset;
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internal override RegexIRCommand Command => RegexIRCommand.Match_Set;
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internal override string AsCommand(
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int lineNum
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)
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{
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return $"[{lineNum}]\t MATCH_SET \"{Charset}\"";
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}
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}
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internal sealed class RegexConditionHIR(
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int success,
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int fail
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) : RegexHIR
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{
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public int SuccessCase { get; } = success;
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public int FailCase { get; } = fail;
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internal override RegexIRCommand Command => RegexIRCommand.Condition;
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internal override string AsCommand(
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int lineNum
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)
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{
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return $"[{lineNum}]\t CONDITION SUCCESS: {SuccessCase} FAIL: {FailCase}";
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}
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}
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internal sealed class RegexPackHIR(
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bool condition,
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string name = ""
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) : RegexHIR
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{
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public bool Condition { get; } = condition;
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public string GroupName { get; } = name;
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internal override RegexIRCommand Command => RegexIRCommand.Pack;
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internal override string AsCommand(
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int lineNum
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)
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{
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return $"[{lineNum}]\t PACK {(Condition ? "SUCCESS" : "FAIL")} GROUP: \"{GroupName}\"";
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}
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}
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internal sealed class RegexCountHIR(
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int min,
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int max,
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bool isGreedy,
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int operation
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) : RegexHIR
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{
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public bool IsGreedy { get; } = isGreedy;
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public int Min { get; } = min;
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public int Max { get; } = max;
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public int OperationIndex { get; } = operation;
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internal override RegexIRCommand Command { get; } = RegexIRCommand.Count;
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internal override string AsCommand(
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int lineNum
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)
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{
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return $"[{lineNum}]\t COUNT {(IsGreedy ? "GREEDY" : "NON_GREEDY")} MIN: {Min} MAX: {Max} OPERATION: {OperationIndex}";
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}
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}
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internal sealed class RegexCountSeqHIR(
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int min,
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int max,
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bool isGreedy,
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string seq
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) : RegexHIR
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{
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public bool IsGreedy { get; } = isGreedy;
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public int Min { get; } = min;
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public int Max { get; } = max;
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public string Sequence { get; } = seq;
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internal override RegexIRCommand Command { get; } = RegexIRCommand.Count_Seq;
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internal override string AsCommand(
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int lineNum
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)
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{
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return $"[{lineNum}]\t COUNT_SEQ {(IsGreedy ? "GREEDY" : "NON_GREEDY")} MIN: {Min} MAX: {Max} SEQ: \"{Sequence}\"";
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}
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}
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internal sealed class RegexCountSetHIR(
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int min,
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int max,
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bool isGreedy,
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string set
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) : RegexHIR
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{
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public bool IsGreedy { get; } = isGreedy;
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public int Min { get; } = min;
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public int Max { get; } = max;
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public string CharSet { get; } = set;
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internal override RegexIRCommand Command => RegexIRCommand.Count_Set;
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internal override string AsCommand(
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int lineNum
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)
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{
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return $"[{lineNum}]\t COUNT_SET {(IsGreedy ? "GREEDY" : "NON_GREEDY")} MIN: {Min} MAX: {Max} SET: \"{CharSet}\"";
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}
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}
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internal sealed class RegexTryHIR(
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int count
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) : RegexHIR
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{
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public int CountOfCommand { get; } = count;
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internal override RegexIRCommand Command => RegexIRCommand.Try;
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internal override string AsCommand(
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int lineNum
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)
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{
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return $"[{lineNum}]\t TRY {CountOfCommand}";
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}
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}
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internal sealed class RegexPopHIR(
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bool isSuccess
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) : RegexHIR
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{
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public bool IsSuccess { get; } = isSuccess;
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internal override RegexIRCommand Command => RegexIRCommand.Pop;
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internal override string AsCommand(
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int lineNum
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)
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{
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return $"[{lineNum}]\t POP {(IsSuccess ? "SUCCESS" : "FAIL")}";
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}
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}
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}
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