1 /* Part of XPCE --- The SWI-Prolog GUI toolkit
2
3 Author: Jan Wielemaker and Anjo Anjewierden
4 E-mail: jan@swi.psy.uva.nl
5 WWW: http://www.swi.psy.uva.nl/projects/xpce/
6 Copyright (c) 1985-2002, University of Amsterdam
7 All rights reserved.
8
9 Redistribution and use in source and binary forms, with or without
10 modification, are permitted provided that the following conditions
11 are met:
12
13 1. Redistributions of source code must retain the above copyright
14 notice, this list of conditions and the following disclaimer.
15
16 2. Redistributions in binary form must reproduce the above copyright
17 notice, this list of conditions and the following disclaimer in
18 the documentation and/or other materials provided with the
19 distribution.
20
21 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
29 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
31 ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 POSSIBILITY OF SUCH DAMAGE.
33 */
34
35 #define INLINE_UTILITIES 1
36 #include <h/kernel.h>
37 #include <h/interface.h>
38
39 static int host_handles; /* # handles */
40 static long itf_symbols; /* # symbols */
41
42 #define SizeOfSymbol ((size_t)(intptr_t)(&(((PceITFSymbol)NULL)->handle[host_handles])))
43
44 /********************************
45 * SYMBOLS *
46 ********************************/
47
48 PceITFSymbol
newSymbol(Any obj,Name name)49 newSymbol(Any obj, Name name)
50 { PceITFSymbol s = alloc(SizeOfSymbol);
51 int n;
52
53 s->object = obj;
54 s->name = name;
55
56 for( n=0; n < host_handles; n++ )
57 s->handle[n] = NULL;
58
59 itf_symbols++;
60
61 return s;
62 }
63
64
65 /********************************
66 * CREATE/DELETE *
67 ********************************/
68
69 void
deleteAssoc(Any obj)70 deleteAssoc(Any obj)
71 { if ( isObject(obj) && onFlag(obj, F_ASSOC) )
72 { PceITFSymbol symbol = getMemberHashTable(ObjectToITFTable, obj);
73 if ( symbol )
74 { symbol->object = NULL;
75 deleteHashTable(ObjectToITFTable, obj);
76 clearFlag(obj, F_ASSOC);
77 }
78 }
79 }
80
81
82 void
newAssoc(Name name,Any obj)83 newAssoc(Name name, Any obj)
84 { PceITFSymbol symbol;
85 Any old;
86
87 if ( (old = getObjectAssoc(name)) )
88 deleteAssoc(old);
89 deleteAssoc(obj);
90
91 if ( onFlag(name, F_ITFNAME) )
92 { symbol = getMemberHashTable(NameToITFTable, name);
93 symbol->object = obj;
94 appendHashTable(ObjectToITFTable, obj, symbol);
95 setFlag(obj, F_ASSOC);
96 } else
97 { symbol = newSymbol(obj, name);
98
99 setFlag(name, F_ITFNAME);
100 if ( isObject(obj) )
101 setFlag(obj, F_ASSOC);
102
103 appendHashTable(ObjectToITFTable, obj, symbol);
104 appendHashTable(NameToITFTable, name, symbol);
105 }
106
107 if ( isObject(obj) )
108 lockObj(obj);
109 }
110
111
112 Any
getObjectAssoc(Name name)113 getObjectAssoc(Name name)
114 { if ( onFlag(name, F_ITFNAME) )
115 { PceITFSymbol symbol = getMemberHashTable(NameToITFTable, name);
116 return symbol->object;
117 }
118
119 fail;
120 }
121
122
123 Name
getNameAssoc(Any obj)124 getNameAssoc(Any obj)
125 { if ( (isObject(obj) && onFlag(obj, F_ASSOC)) )
126 { PceITFSymbol symbol = getMemberHashTable(ObjectToITFTable, obj);
127 return symbol->name;
128 }
129
130 fail;
131 }
132
133
134 status
renameAssoc(Name old,Name new)135 renameAssoc(Name old, Name new)
136 { Any obj = getObjectAssoc(old);
137
138 if ( obj != FAIL )
139 { newAssoc(new, obj);
140 succeed;
141 }
142
143 fail;
144 }
145
146
147 status
forSomeAssoc(Code code)148 forSomeAssoc(Code code)
149 { for_hash_table(ObjectToITFTable, s,
150 { PceITFSymbol symbol = s->value;
151
152 if ( symbol->object )
153 forwardCodev(code, 1, (Any *) (&symbol->name));
154 });
155 succeed;
156 }
157
158
159 /********************************
160 * SPECIALS *
161 *********************************/
162
163 void
initAssoc(int handles)164 initAssoc(int handles)
165 { int n;
166
167 host_handles = handles;
168
169 ObjectToITFTable = createHashTable(toInt(1024), NAME_none);
170 NameToITFTable = createHashTable(toInt(1024), NAME_none);
171
172 newAssoc(NAME_ObjectToItfTable, ObjectToITFTable);
173 newAssoc(NAME_NameToItfTable, NameToITFTable);
174
175 for(n=0; n<host_handles; n++)
176 HandleToITFTables[n] = createHashTable(toInt(64), NAME_none);
177 }
178
179
180