113 lines
3.8 KiB
C#
113 lines
3.8 KiB
C#
//-----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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// file="RegexAnalyzerFrontEnd"
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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 StgSharp.RegularAnalysis.Abstraction;
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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.Linq.Expressions;
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using System.Reflection.Emit;
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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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public record TextRegexSource
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{
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internal TextRegexSource(
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string pattern,
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AbstractSyntaxTree<RegexAstNode, RegexElementLabel> ast,
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List<RegexIR> base_ir,
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List<RegexIR> ir,
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Exception? analyseException = null
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)
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{
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Pattern = pattern;
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Ast = ast;
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IRs = ir;
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BaseIR = base_ir;
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AnalyseException = analyseException;
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}
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public Exception? AnalyseException { get; set; }
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public string Pattern { get; }
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internal AbstractSyntaxTree<RegexAstNode, RegexElementLabel> Ast { get; }
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internal List<RegexIR> BaseIR { get; }
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internal List<RegexIR> IRs { get; }
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}
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public static partial class RegexAnalyzerFrontEnd
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{
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public static TextRegexSource Analyze(
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string regex
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)
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{
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// RegexAnalyzer interpreter = new();
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// interpreter._source = regex;
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AbstractSyntaxTree<RegexAstNode, RegexElementLabel> tree;
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try
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{
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tree = GenerateAST(regex);
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OptimizeTree(tree);
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}
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catch (Exception ex)
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{
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return new TextRegexSource(regex, null, null, null, ex);
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}
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List<RegexIR> base_ir;
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try
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{
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base_ir = GenerateIR(tree);
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}
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catch (Exception ex)
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{
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return new TextRegexSource(regex, tree, null, null, ex);
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}
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try
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{
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ScanAndOptimizeIR(base_ir, out List<RegexIR> opt_ir);
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List<RegexIR> prefix_ir = EmitPrefix(opt_ir);
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return new TextRegexSource(regex, tree, base_ir, prefix_ir);
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}
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catch (Exception ex)
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{
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return new TextRegexSource(regex, tree, base_ir, null, ex);
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}
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}
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}
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}
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