Initial commit of Hyperscan

2026-01-01 14:15:43 +03:00 · 2015-10-20 09:13:35 +11:00
commit 904e436f11
610 changed files with 213627 additions and 0 deletions
--- a/src/parser/ComponentCondReference.h
+++ b/src/parser/ComponentCondReference.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2015, Intel Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  * Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *  * Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** \file
+ * \brief Conditional reference.
+ */
+
+#ifndef PARSER_COMPONENTCONDREFERENCE_H_
+#define PARSER_COMPONENTCONDREFERENCE_H_
+
+#include "ComponentSequence.h"
+
+#include <memory>
+#include <string>
+
+namespace ue2 {
+
+class ComponentCondReference : public ComponentSequence {
+    friend class DumpVisitor;
+    friend class PrefilterVisitor;
+    friend class ReferenceVisitor;
+    friend class PrintVisitor;
+public:
+    ComponentCondReference(unsigned ref);
+    ComponentCondReference(const std::string &name);
+    ComponentCondReference(std::unique_ptr<Component> c);
+
+    ~ComponentCondReference() override;
+    ComponentCondReference *clone() const override;
+    Component *accept(ComponentVisitor &v) override;
+    void accept(ConstComponentVisitor &v) const override;
+
+    void addAlternation() override;
+
+    std::vector<PositionInfo> first() const override;
+    std::vector<PositionInfo> last() const override;
+
+    bool empty() const override;
+    void notePositions(GlushkovBuildState &bs) override;
+    void buildFollowSet(GlushkovBuildState &bs,
+                        const std::vector<PositionInfo> &lastPos) override;
+    bool repeatable() const override;
+
+private:
+    ComponentCondReference(const ComponentCondReference &other);
+
+    enum Condition {
+        CONDITION_NUMBER,
+        CONDITION_NAME,
+        CONDITION_ASSERTION
+    };
+
+    enum Condition kind;
+
+    unsigned ref_id;
+    std::string ref_name;
+    std::unique_ptr<Component> assertion;
+
+    /** True if an alternation has been added, which means we have both a YES
+     * and a NO branch. */
+    bool hasBothBranches;
+};
+
+} // namespace ue2
+
+#endif // PARSER_COMPONENTCONDREFERENCE_H_