src/antlr/ASTFactory.hpp

#ifndef INC_ASTFactory_hpp__
#define INC_ASTFactory_hpp__

/* ANTLR Translator Generator
 * Project led by Terence Parr at http://www.jGuru.com
 * Software rights: http://www.antlr.org/license.html
 *
 * $Id$
 */

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

#include <istream>
#include <utility>

#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
namespace antlr {
#endif

// Using these extra types to appease MSVC
typedef RefAST (*factory_type_)();
typedef ANTLR_USE_NAMESPACE(std)pair< const char*, factory_type_ >  factory_descriptor_;
typedef ANTLR_USE_NAMESPACE(std)vector< factory_descriptor_* >      factory_descriptor_list_;

/** AST Super Factory shared by TreeParser and Parser.
 * This super factory maintains a map of all AST node types to their respective
 * AST factories. One instance should be shared among a parser/treeparser
 * chain.
 *
 * @todo check all this code for possible use of references in
 * stead of RefAST's.
 */
class ANTLR_API ASTFactory {
public:
        typedef factory_type_             factory_type;
        typedef factory_descriptor_       factory_descriptor;
        typedef factory_descriptor_list_  factory_descriptor_list;
protected:
        /* The mapping of AST node type to factory..
         */
        factory_descriptor default_factory_descriptor;
        factory_descriptor_list nodeFactories;
public:
        /// Make new factory. Per default (Ref)CommonAST instances are generated.
        ASTFactory();
        /** Initialize factory with a non default node type.
         * factory_node_name should be the name of the AST node type the factory
         * generates. (should exist during the existance of this ASTFactory
         * instance)
         */
        ASTFactory( const char* factory_node_name, factory_type factory );
        /// Destroy factory
        virtual ~ASTFactory();

        /// Register a node factory for the node type type with name ast_name
        void registerFactory( int type, const char* ast_name, factory_type factory );
        /// Set the maximum node (AST) type this factory may encounter
        void setMaxNodeType( int type );

        /// Add a child to the current AST
        void addASTChild(ASTPair& currentAST, RefAST child);
        /// Create new empty AST node. The right default type shou
        virtual RefAST create();
        /// Create AST node of the right type for 'type'
        RefAST create(int type);
        /// Create AST node of the right type for 'type' and initialize with txt
        RefAST create(int type, const ANTLR_USE_NAMESPACE(std)string& txt);
        /// Create duplicate of tr
        RefAST create(RefAST tr);
        /// Create new AST node and initialize contents from a token.
        RefAST create(RefToken tok);
        /// Create new AST node and initialize contents from a stream.
        RefAST create(const ANTLR_USE_NAMESPACE(std)string& txt, ANTLR_USE_NAMESPACE(std)istream& infile );
        /** Deep copy a single node. This function the new clone() methods in the
         * AST interface. Returns a new RefAST(nullASTptr) if t is null.
         */
        RefAST dup(RefAST t);
        /// Duplicate tree including siblings of root.
        RefAST dupList(RefAST t);
        /** Duplicate a tree, assuming this is a root node of a tree--
         * duplicate that node and what's below; ignore siblings of root node.
         */
        RefAST dupTree(RefAST t);
        /** Make a tree from a list of nodes. The first element in the
         * array is the root. If the root is null, then the tree is
         * a simple list not a tree. Handles null children nodes correctly.
         * For example, make(a, b, null, c) yields tree (a b c).  make(null,a,b)
         * yields tree (nil a b).
         */
        RefAST make(ANTLR_USE_NAMESPACE(std)vector<RefAST>& nodes);
        /** Make a tree from a list of nodes, where the nodes are contained
         * in an ASTArray object. The ASTArray is deleted after use.
         * @todo FIXME! I have a feeling we can get rid of this ugly ASTArray thing
         */
        RefAST make(ASTArray* nodes);
        /// Make an AST the root of current AST
        void makeASTRoot(ASTPair& currentAST, RefAST root);

        /** Set a new default AST type.
         * factory_node_name should be the name of the AST node type the factory
         * generates. (should exist during the existance of this ASTFactory
         * instance).
         * Only change factory between parser runs. You might get unexpected results
         * otherwise.
         */
        void setASTNodeFactory( const char* factory_node_name, factory_type factory );

#ifdef ANTLR_SUPPORT_XML
        /** Load a XML AST from stream. Make sure you have all the factories
         * registered before use.
         * @note this 'XML' stuff is quite rough still. YMMV.
         */
        RefAST LoadAST( ANTLR_USE_NAMESPACE(std)istream& infile );
#endif
protected:
        void loadChildren( ANTLR_USE_NAMESPACE(std)istream& infile, RefAST current );
        void loadSiblings( ANTLR_USE_NAMESPACE(std)istream& infile, RefAST current );
        bool checkCloseTag( ANTLR_USE_NAMESPACE(std)istream& infile );

#ifdef ANTLR_VECTOR_HAS_AT
        /// construct a node of 'type'
        inline RefAST getNodeOfType( unsigned int type )
        {
                return RefAST(nodeFactories.at(type)->second());
        }
        /// get the name of the node 'type'
        const char* getASTNodeType( unsigned int type )
        {
                return nodeFactories.at(type)->first;
        }
        /// get the factory used for node 'type'
        factory_type getASTNodeFactory( unsigned int type )
        {
                return nodeFactories.at(type)->second;
        }
#else
        inline RefAST getNodeOfType( unsigned int type )
        {
                return RefAST(nodeFactories[type]->second());
        }
        /// get the name of the node 'type'
        const char* getASTNodeType( unsigned int type )
        {
                return nodeFactories[type]->first;
        }
        factory_type getASTNodeFactory( unsigned int type )
        {
                return nodeFactories[type]->second;
        }
#endif

private:
        // no copying and such..
        ASTFactory( const ASTFactory& );
        ASTFactory& operator=( const ASTFactory& );
};

#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
}
#endif

#endif //INC_ASTFactory_hpp__
Revision:	1633
Committed:	Thu Sep 15 13:39:36 2011 UTC (13 years, 7 months ago) by gezelter
File size:	5680 byte(s)
Log Message:	Updated antlr, fixed a clang compilation bug, removed a warning message
#	Content
1	#ifndef INC_ASTFactory_hpp__
2	#define INC_ASTFactory_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	* $Id$
9	*/
10
11	#include <antlr/config.hpp>
12	#include <antlr/AST.hpp>
13	#include <antlr/ASTArray.hpp>
14	#include <antlr/ASTPair.hpp>
15
16	#include <istream>
17	#include <utility>
18
19	#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
20	namespace antlr {
21	#endif
22
23	// Using these extra types to appease MSVC
24	typedef RefAST (*factory_type_)();
25	typedef ANTLR_USE_NAMESPACE(std)pair< const char*, factory_type_ > factory_descriptor_;
26	typedef ANTLR_USE_NAMESPACE(std)vector< factory_descriptor_* > factory_descriptor_list_;
27
28	/** AST Super Factory shared by TreeParser and Parser.
29	* This super factory maintains a map of all AST node types to their respective
30	* AST factories. One instance should be shared among a parser/treeparser
31	* chain.
32	*
33	* @todo check all this code for possible use of references in
34	* stead of RefAST's.
35	*/
36	class ANTLR_API ASTFactory {
37	public:
38	typedef factory_type_ factory_type;
39	typedef factory_descriptor_ factory_descriptor;
40	typedef factory_descriptor_list_ factory_descriptor_list;
41	protected:
42	/* The mapping of AST node type to factory..
43	*/
44	factory_descriptor default_factory_descriptor;
45	factory_descriptor_list nodeFactories;
46	public:
47	/// Make new factory. Per default (Ref)CommonAST instances are generated.
48	ASTFactory();
49	/** Initialize factory with a non default node type.
50	* factory_node_name should be the name of the AST node type the factory
51	* generates. (should exist during the existance of this ASTFactory
52	* instance)
53	*/
54	ASTFactory( const char* factory_node_name, factory_type factory );
55	/// Destroy factory
56	virtual ~ASTFactory();
57
58	/// Register a node factory for the node type type with name ast_name
59	void registerFactory( int type, const char* ast_name, factory_type factory );
60	/// Set the maximum node (AST) type this factory may encounter
61	void setMaxNodeType( int type );
62
63	/// Add a child to the current AST
64	void addASTChild(ASTPair& currentAST, RefAST child);
65	/// Create new empty AST node. The right default type shou
66	virtual RefAST create();
67	/// Create AST node of the right type for 'type'
68	RefAST create(int type);
69	/// Create AST node of the right type for 'type' and initialize with txt
70	RefAST create(int type, const ANTLR_USE_NAMESPACE(std)string& txt);
71	/// Create duplicate of tr
72	RefAST create(RefAST tr);
73	/// Create new AST node and initialize contents from a token.
74	RefAST create(RefToken tok);
75	/// Create new AST node and initialize contents from a stream.
76	RefAST create(const ANTLR_USE_NAMESPACE(std)string& txt, ANTLR_USE_NAMESPACE(std)istream& infile );
77	/** Deep copy a single node. This function the new clone() methods in the
78	* AST interface. Returns a new RefAST(nullASTptr) if t is null.
79	*/
80	RefAST dup(RefAST t);
81	/// Duplicate tree including siblings of root.
82	RefAST dupList(RefAST t);
83	/** Duplicate a tree, assuming this is a root node of a tree--
84	* duplicate that node and what's below; ignore siblings of root node.
85	*/
86	RefAST dupTree(RefAST t);
87	/** Make a tree from a list of nodes. The first element in the
88	* array is the root. If the root is null, then the tree is
89	* a simple list not a tree. Handles null children nodes correctly.
90	* For example, make(a, b, null, c) yields tree (a b c). make(null,a,b)
91	* yields tree (nil a b).
92	*/
93	RefAST make(ANTLR_USE_NAMESPACE(std)vector<RefAST>& nodes);
94	/** Make a tree from a list of nodes, where the nodes are contained
95	* in an ASTArray object. The ASTArray is deleted after use.
96	* @todo FIXME! I have a feeling we can get rid of this ugly ASTArray thing
97	*/
98	RefAST make(ASTArray* nodes);
99	/// Make an AST the root of current AST
100	void makeASTRoot(ASTPair& currentAST, RefAST root);
101
102	/** Set a new default AST type.
103	* factory_node_name should be the name of the AST node type the factory
104	* generates. (should exist during the existance of this ASTFactory
105	* instance).
106	* Only change factory between parser runs. You might get unexpected results
107	* otherwise.
108	*/
109	void setASTNodeFactory( const char* factory_node_name, factory_type factory );
110
111	#ifdef ANTLR_SUPPORT_XML
112	/** Load a XML AST from stream. Make sure you have all the factories
113	* registered before use.
114	* @note this 'XML' stuff is quite rough still. YMMV.
115	*/
116	RefAST LoadAST( ANTLR_USE_NAMESPACE(std)istream& infile );
117	#endif
118	protected:
119	void loadChildren( ANTLR_USE_NAMESPACE(std)istream& infile, RefAST current );
120	void loadSiblings( ANTLR_USE_NAMESPACE(std)istream& infile, RefAST current );
121	bool checkCloseTag( ANTLR_USE_NAMESPACE(std)istream& infile );
122
123	#ifdef ANTLR_VECTOR_HAS_AT
124	/// construct a node of 'type'
125	inline RefAST getNodeOfType( unsigned int type )
126	{
127	return RefAST(nodeFactories.at(type)->second());
128	}
129	/// get the name of the node 'type'
130	const char* getASTNodeType( unsigned int type )
131	{
132	return nodeFactories.at(type)->first;
133	}
134	/// get the factory used for node 'type'
135	factory_type getASTNodeFactory( unsigned int type )
136	{
137	return nodeFactories.at(type)->second;
138	}
139	#else
140	inline RefAST getNodeOfType( unsigned int type )
141	{
142	return RefAST(nodeFactories[type]->second());
143	}
144	/// get the name of the node 'type'
145	const char* getASTNodeType( unsigned int type )
146	{
147	return nodeFactories[type]->first;
148	}
149	factory_type getASTNodeFactory( unsigned int type )
150	{
151	return nodeFactories[type]->second;
152	}
153	#endif
154
155	private:
156	// no copying and such..
157	ASTFactory( const ASTFactory& );
158	ASTFactory& operator=( const ASTFactory& );
159	};
160
161	#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
162	}
163	#endif
164
165	#endif //INC_ASTFactory_hpp__