Exemplo n.º 1
0
        /// <summary>Initializes the factory.</summary>
        public SymbolicRegexRunnerFactory(RegexTree regexTree, RegexOptions options, TimeSpan matchTimeout)
        {
            Debug.Assert((options & (RegexOptions.RightToLeft | RegexOptions.ECMAScript)) == 0);

            var charSetSolver = new CharSetSolver();
            var bddBuilder    = new SymbolicRegexBuilder <BDD>(charSetSolver, charSetSolver);
            var converter     = new RegexNodeConverter(bddBuilder, regexTree.CaptureNumberSparseMapping);

            SymbolicRegexNode <BDD> rootNode = converter.ConvertToSymbolicRegexNode(regexTree.Root);

            // Determine if the root node is supported for safe handling
            int threshold = SymbolicRegexThresholds.GetSymbolicRegexSafeSizeThreshold();

            Debug.Assert(threshold > 0);

            // Skip the threshold check if the threshold equals int.MaxValue
            if (threshold != int.MaxValue)
            {
                int size = rootNode.EstimateNfaSize();
                if (size > threshold)
                {
                    throw new NotSupportedException(SR.Format(SR.NotSupported_NonBacktrackingUnsafeSize, size, threshold));
                }
            }

            rootNode = rootNode.AddFixedLengthMarkers();
            BDD[] minterms = rootNode.ComputeMinterms();

            _matcher = minterms.Length > 64 ?
                       SymbolicRegexMatcher <BitVector> .Create(regexTree.CaptureCount, regexTree.FindOptimizations, bddBuilder, rootNode, new BitVectorSolver(minterms, charSetSolver), matchTimeout) :
                       SymbolicRegexMatcher <ulong> .Create(regexTree.CaptureCount, regexTree.FindOptimizations, bddBuilder, rootNode, new UInt64Solver(minterms, charSetSolver), matchTimeout);
        }
Exemplo n.º 2
0
        /// <summary>Initializes the factory.</summary>
        public SymbolicRegexRunnerFactory(RegexTree regexTree, RegexOptions options, TimeSpan matchTimeout, CultureInfo culture)
        {
            Debug.Assert((options & (RegexOptions.RightToLeft | RegexOptions.ECMAScript)) == 0);

            var bddBuilder = new SymbolicRegexBuilder <BDD>(CharSetSolver.Instance);
            var converter  = new RegexNodeConverter(bddBuilder, culture, regexTree.CaptureNumberSparseMapping);

            SymbolicRegexNode <BDD> rootNode = converter.ConvertToSymbolicRegexNode(regexTree.Root, tryCreateFixedLengthMarker: true);

            BDD[] minterms = rootNode.ComputeMinterms();

            _matcher = minterms.Length > 64 ?
                       SymbolicRegexMatcher <BitVector> .Create(regexTree.CaptureCount, regexTree.FindOptimizations, bddBuilder, rootNode, new BitVectorAlgebra(minterms), matchTimeout) :
                       SymbolicRegexMatcher <ulong> .Create(regexTree.CaptureCount, regexTree.FindOptimizations, bddBuilder, rootNode, new UInt64Algebra(minterms), matchTimeout);
        }
Exemplo n.º 3
0
        /// <summary>Initializes the factory.</summary>
        public SymbolicRegexRunnerFactory(RegexTree regexTree, RegexOptions options, TimeSpan matchTimeout)
        {
            Debug.Assert((options & (RegexOptions.RightToLeft | RegexOptions.ECMAScript)) == 0);

            var charSetSolver = new CharSetSolver();
            var bddBuilder    = new SymbolicRegexBuilder <BDD>(charSetSolver, charSetSolver);
            var converter     = new RegexNodeConverter(bddBuilder, regexTree.CaptureNumberSparseMapping);

            SymbolicRegexNode <BDD> rootNode = converter.ConvertToSymbolicRegexNode(regexTree.Root);

            BDD[] minterms = rootNode.ComputeMinterms();

            _matcher = minterms.Length > 64 ?
                       SymbolicRegexMatcher <BitVector> .Create(regexTree.CaptureCount, regexTree.FindOptimizations, bddBuilder, rootNode, new BitVectorSolver(minterms, charSetSolver), matchTimeout) :
                       SymbolicRegexMatcher <ulong> .Create(regexTree.CaptureCount, regexTree.FindOptimizations, bddBuilder, rootNode, new UInt64Solver(minterms, charSetSolver), matchTimeout);
        }