--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/fontservices/textshaperplugin/IcuSource/common/rbbinode.h Tue Feb 02 02:02:46 2010 +0200
@@ -0,0 +1,123 @@
+/********************************************************************
+ * COPYRIGHT:
+ * Copyright (c) 2001-2003, International Business Machines Corporation and
+ * others. All Rights Reserved.
+ ********************************************************************/
+
+#ifndef RBBINODE_H
+#define RBBINODE_H
+
+#include "unicode/utypes.h"
+#include "unicode/uobject.h"
+
+//
+// class RBBINode
+//
+// Represents a node in the parse tree generated when reading
+// a rule file.
+//
+
+U_NAMESPACE_BEGIN
+
+class UnicodeSet;
+class UVector;
+
+class RBBINode : public UMemory {
+ public:
+ enum NodeType {
+ setRef,
+ uset,
+ varRef,
+ leafChar,
+ lookAhead,
+ tag,
+ endMark,
+ opStart,
+ opCat,
+ opOr,
+ opStar,
+ opPlus,
+ opQuestion,
+ opBreak,
+ opReverse,
+ opLParen
+ };
+
+ enum OpPrecedence {
+ precZero,
+ precStart,
+ precLParen,
+ precOpOr,
+ precOpCat
+ };
+
+ NodeType fType;
+ RBBINode *fParent;
+ RBBINode *fLeftChild;
+ RBBINode *fRightChild;
+ UnicodeSet *fInputSet; // For uset nodes only.
+ OpPrecedence fPrecedence; // For binary ops only.
+
+ UnicodeString fText; // Text corresponding to this node.
+ // May be lazily evaluated when (if) needed
+ // for some node types.
+ int fFirstPos; // Position in the rule source string of the
+ // first text associated with the node.
+ // If there's a left child, this will be the same
+ // as that child's left pos.
+ int fLastPos; // Last position in the rule source string
+ // of any text associated with this node.
+ // If there's a right child, this will be the same
+ // as that child's last postion.
+
+ UBool fNullable; // See Aho.
+ int32_t fVal; // For leafChar nodes, the value.
+ // Values are the character category,
+ // corresponds to columns in the final
+ // state transition table.
+
+ UBool fLookAheadEnd; // For endMark nodes, set TRUE if
+ // marking the end of a look-ahead rule.
+
+ UVector *fFirstPosSet;
+ UVector *fLastPosSet; // TODO: rename fFirstPos & fLastPos to avoid confusion.
+ UVector *fFollowPos;
+
+
+ RBBINode(NodeType t);
+ RBBINode(const RBBINode &other);
+ ~RBBINode();
+
+ RBBINode *cloneTree();
+ RBBINode *flattenVariables();
+ void flattenSets();
+ void findNodes(UVector *dest, RBBINode::NodeType kind, UErrorCode &status);
+
+#ifdef RBBI_DEBUG
+ void printNode();
+ void printTree(UBool withHeading);
+#else
+ // Do-nothing inline functions for non-debug builds. Can't make empty defines for member
+ // functions - they won't compile at the call sites.
+ int fakeField;
+ #define printNode() fakeField=0;
+ #define printTree(withHeading) fakeField=0;
+#endif
+
+ private:
+ RBBINode &operator = (const RBBINode &other); // No defs.
+ UBool operator == (const RBBINode &other); // Private, so these functions won't accidently be used.
+
+ int fSerialNum; // Debugging aids.
+ static int gLastSerial;
+};
+
+#ifdef RBBI_DEBUG
+U_CFUNC void
+RBBI_DEBUG_printUnicodeString(const UnicodeString &s, int minWidth=0);
+#endif
+
+U_NAMESPACE_END
+
+#endif
+