src/antlr/BaseAST.hpp

#ifndef INC_BaseAST_hpp__
#define INC_BaseAST_hpp__

/* ANTLR Translator Generator
 * Project led by Terence Parr at http://www.jGuru.com
 * Software rights: http://www.antlr.org/license.html
 *
 * $Id: BaseAST.hpp,v 1.1 2005-12-02 15:38:02 tim Exp $
 */

#include <iostream>

#include <antlr/config.hpp>
#include <antlr/AST.hpp>

#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
namespace antlr {
#endif

class ANTLR_API BaseAST;
typedef ASTRefCount<BaseAST> RefBaseAST;

class ANTLR_API BaseAST : public AST {
public:
        BaseAST() : AST()
        {
        }
        BaseAST(const BaseAST& other)
        : AST(other)
        {
        }
        virtual ~BaseAST()
        {
        }

        /// Return the class name
        const char* typeName( void ) const
        {
                return BaseAST::TYPE_NAME;
        }

        /// Clone this AST node.
        RefAST clone( void ) const
        {
                ANTLR_USE_NAMESPACE(std)cerr << "BaseAST::clone()" << ANTLR_USE_NAMESPACE(std)endl;
                return nullAST;
        }

   /// Is node t equal to this in terms of token type and text?
        virtual bool equals(RefAST t) const;

   /** Is t an exact structural and equals() match of this tree. The
         * 'this' reference is considered the start of a sibling list.
         */
        virtual bool equalsList(RefAST t) const;

   /** Is 't' a subtree of this list? The siblings of the root are NOT ignored.
    */
        virtual bool equalsListPartial(RefAST t) const;

        /** Is tree rooted at 'this' equal to 't'?  The siblings of 'this' are
         * ignored.
         */
        virtual bool equalsTree(RefAST t) const;

        /** Is 't' a subtree of the tree rooted at 'this'? The siblings of
         * 'this' are ignored.
         */
        virtual bool equalsTreePartial(RefAST t) const;

        /** Walk the tree looking for all exact subtree matches.  Return
         *  an ASTEnumerator that lets the caller walk the list
         *  of subtree roots found herein.
         */
        virtual ANTLR_USE_NAMESPACE(std)vector<RefAST> findAll(RefAST t);

   /** Walk the tree looking for all subtrees.  Return
    *  an ASTEnumerator that lets the caller walk the list
    *  of subtree roots found herein.
    */
        virtual ANTLR_USE_NAMESPACE(std)vector<RefAST> findAllPartial(RefAST t);

   /// Add a node to the end of the child list for this node
        virtual void addChild(RefAST c)
        {
                if( !c )
                        return;

                RefBaseAST tmp = down;

                if (tmp)
                {
                        while (tmp->right)
                                tmp = tmp->right;
                        tmp->right = c;
                }
                else
                        down = c;
        }

        /** Get the number of child nodes of this node (shallow e.g. not of the
         * whole tree it spans).
         */
        virtual size_t getNumberOfChildren() const;

        /// Get the first child of this node; null if no children
        virtual RefAST getFirstChild() const
        {
                return RefAST(down);
        }
        /// Get  the next sibling in line after this one
        virtual RefAST getNextSibling() const
        {
                return RefAST(right);
        }

        /// Get the token text for this node
        virtual ANTLR_USE_NAMESPACE(std)string getText() const
        {
                return "";
        }
        /// Get the token type for this node
        virtual int getType() const
        {
                return 0;
        }

        /// Remove all children
        virtual void removeChildren()
        {
                down = static_cast<BaseAST*>(static_cast<AST*>(nullAST));
        }

        /// Set the first child of a node.
        virtual void setFirstChild(RefAST c)
        {
                down = static_cast<BaseAST*>(static_cast<AST*>(c));
        }

        /// Set the next sibling after this one.
        void setNextSibling(RefAST n)
        {
                right = static_cast<BaseAST*>(static_cast<AST*>(n));
        }

        /// Set the token text for this node
        virtual void setText(const ANTLR_USE_NAMESPACE(std)string& txt)
        {
        }

        /// Set the token type for this node
        virtual void setType(int type)
        {
        }

#ifdef ANTLR_SUPPORT_XML
        /** print attributes of this node to 'out'. Override to customize XML
         * output.
         * @param out the stream to write the AST attributes to.
         */
        virtual bool attributesToStream( ANTLR_USE_NAMESPACE(std)ostream& out ) const;
        /** Write this subtree to a stream. Overload this one to customize the XML
         * output for AST derived AST-types
         * @param output stream
         */
        virtual void toStream( ANTLR_USE_NAMESPACE(std)ostream &out ) const;
#endif

        /// Return string representation for the AST
        virtual ANTLR_USE_NAMESPACE(std)string toString() const
        {
                return getText();
        }

        /// Print out a child sibling tree in LISP notation
        virtual ANTLR_USE_NAMESPACE(std)string toStringList() const;
        virtual ANTLR_USE_NAMESPACE(std)string toStringTree() const;

        static const char* const TYPE_NAME;
protected:
        RefBaseAST down;
        RefBaseAST right;
private:
        void doWorkForFindAll(ANTLR_USE_NAMESPACE(std)vector<RefAST>& v,
                                                                 RefAST target,
                                                                 bool partialMatch);
};

/** Is node t equal to this in terms of token type and text?
 */
inline bool BaseAST::equals(RefAST t) const
{
        if (!t)
                return false;
        return ((getType() == t->getType()) && (getText() == t->getText()));
}

#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
}
#endif

#endif //INC_BaseAST_hpp__
Revision:	2469
Committed:	Fri Dec 2 15:38:03 2005 UTC (18 years, 7 months ago) by tim
File size:	4747 byte(s)
Log Message:	End of the Link --> List Return of the Oject-Oriented replace yacc/lex parser with antlr parser
#	User	Rev	Content
1	tim	2469	#ifndef INC_BaseAST_hpp__
2			#define INC_BaseAST_hpp__
3
4			/* ANTLR Translator Generator
5			* Project led by Terence Parr at http://www.jGuru.com
6			* Software rights: http://www.antlr.org/license.html
7			*
8			* $Id: BaseAST.hpp,v 1.1 2005-12-02 15:38:02 tim Exp $
9			*/
10
11			#include <iostream>
12
13			#include <antlr/config.hpp>
14			#include <antlr/AST.hpp>
15
16			#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
17			namespace antlr {
18			#endif
19
20			class ANTLR_API BaseAST;
21			typedef ASTRefCount<BaseAST> RefBaseAST;
22
23			class ANTLR_API BaseAST : public AST {
24			public:
25			BaseAST() : AST()
26			{
27			}
28			BaseAST(const BaseAST& other)
29			: AST(other)
30			{
31			}
32			virtual ~BaseAST()
33			{
34			}
35
36			/// Return the class name
37			const char* typeName( void ) const
38			{
39			return BaseAST::TYPE_NAME;
40			}
41
42			/// Clone this AST node.
43			RefAST clone( void ) const
44			{
45			ANTLR_USE_NAMESPACE(std)cerr << "BaseAST::clone()" << ANTLR_USE_NAMESPACE(std)endl;
46			return nullAST;
47			}
48
49			/// Is node t equal to this in terms of token type and text?
50			virtual bool equals(RefAST t) const;
51
52			/** Is t an exact structural and equals() match of this tree. The
53			* 'this' reference is considered the start of a sibling list.
54			*/
55			virtual bool equalsList(RefAST t) const;
56
57			/** Is 't' a subtree of this list? The siblings of the root are NOT ignored.
58			*/
59			virtual bool equalsListPartial(RefAST t) const;
60
61			/** Is tree rooted at 'this' equal to 't'? The siblings of 'this' are
62			* ignored.
63			*/
64			virtual bool equalsTree(RefAST t) const;
65
66			/** Is 't' a subtree of the tree rooted at 'this'? The siblings of
67			* 'this' are ignored.
68			*/
69			virtual bool equalsTreePartial(RefAST t) const;
70
71			/** Walk the tree looking for all exact subtree matches. Return
72			* an ASTEnumerator that lets the caller walk the list
73			* of subtree roots found herein.
74			*/
75			virtual ANTLR_USE_NAMESPACE(std)vector<RefAST> findAll(RefAST t);
76
77			/** Walk the tree looking for all subtrees. Return
78			* an ASTEnumerator that lets the caller walk the list
79			* of subtree roots found herein.
80			*/
81			virtual ANTLR_USE_NAMESPACE(std)vector<RefAST> findAllPartial(RefAST t);
82
83			/// Add a node to the end of the child list for this node
84			virtual void addChild(RefAST c)
85			{
86			if( !c )
87			return;
88
89			RefBaseAST tmp = down;
90
91			if (tmp)
92			{
93			while (tmp->right)
94			tmp = tmp->right;
95			tmp->right = c;
96			}
97			else
98			down = c;
99			}
100
101			/** Get the number of child nodes of this node (shallow e.g. not of the
102			* whole tree it spans).
103			*/
104			virtual size_t getNumberOfChildren() const;
105
106			/// Get the first child of this node; null if no children
107			virtual RefAST getFirstChild() const
108			{
109			return RefAST(down);
110			}
111			/// Get the next sibling in line after this one
112			virtual RefAST getNextSibling() const
113			{
114			return RefAST(right);
115			}
116
117			/// Get the token text for this node
118			virtual ANTLR_USE_NAMESPACE(std)string getText() const
119			{
120			return "";
121			}
122			/// Get the token type for this node
123			virtual int getType() const
124			{
125			return 0;
126			}
127
128			/// Remove all children
129			virtual void removeChildren()
130			{
131			down = static_cast<BaseAST>(static_cast<AST>(nullAST));
132			}
133
134			/// Set the first child of a node.
135			virtual void setFirstChild(RefAST c)
136			{
137			down = static_cast<BaseAST>(static_cast<AST>(c));
138			}
139
140			/// Set the next sibling after this one.
141			void setNextSibling(RefAST n)
142			{
143			right = static_cast<BaseAST>(static_cast<AST>(n));
144			}
145
146			/// Set the token text for this node
147			virtual void setText(const ANTLR_USE_NAMESPACE(std)string& txt)
148			{
149			}
150
151			/// Set the token type for this node
152			virtual void setType(int type)
153			{
154			}
155
156			#ifdef ANTLR_SUPPORT_XML
157			/** print attributes of this node to 'out'. Override to customize XML
158			* output.
159			* @param out the stream to write the AST attributes to.
160			*/
161			virtual bool attributesToStream( ANTLR_USE_NAMESPACE(std)ostream& out ) const;
162			/** Write this subtree to a stream. Overload this one to customize the XML
163			* output for AST derived AST-types
164			* @param output stream
165			*/
166			virtual void toStream( ANTLR_USE_NAMESPACE(std)ostream &out ) const;
167			#endif
168
169			/// Return string representation for the AST
170			virtual ANTLR_USE_NAMESPACE(std)string toString() const
171			{
172			return getText();
173			}
174
175			/// Print out a child sibling tree in LISP notation
176			virtual ANTLR_USE_NAMESPACE(std)string toStringList() const;
177			virtual ANTLR_USE_NAMESPACE(std)string toStringTree() const;
178
179			static const char* const TYPE_NAME;
180			protected:
181			RefBaseAST down;
182			RefBaseAST right;
183			private:
184			void doWorkForFindAll(ANTLR_USE_NAMESPACE(std)vector<RefAST>& v,
185			RefAST target,
186			bool partialMatch);
187			};
188
189			/** Is node t equal to this in terms of token type and text?
190			*/
191			inline bool BaseAST::equals(RefAST t) const
192			{
193			if (!t)
194			return false;
195			return ((getType() == t->getType()) && (getText() == t->getText()));
196			}
197
198			#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
199			}
200			#endif
201
202			#endif //INC_BaseAST_hpp__