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1 | \ ========== Copyright Header Begin ========================================== |
2 | \ | |
3 | \ Hypervisor Software File: action-primitives.fth | |
4 | \ | |
5 | \ Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. | |
6 | \ | |
7 | \ - Do no alter or remove copyright notices | |
8 | \ | |
9 | \ - Redistribution and use of this software in source and binary forms, with | |
10 | \ or without modification, are permitted provided that the following | |
11 | \ conditions are met: | |
12 | \ | |
13 | \ - Redistribution of source code must retain the above copyright notice, | |
14 | \ this list of conditions and the following disclaimer. | |
15 | \ | |
16 | \ - Redistribution in binary form must reproduce the above copyright notice, | |
17 | \ this list of conditions and the following disclaimer in the | |
18 | \ documentation and/or other materials provided with the distribution. | |
19 | \ | |
20 | \ Neither the name of Sun Microsystems, Inc. or the names of contributors | |
21 | \ may be used to endorse or promote products derived from this software | |
22 | \ without specific prior written permission. | |
23 | \ | |
24 | \ This software is provided "AS IS," without a warranty of any kind. | |
25 | \ ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, | |
26 | \ INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A | |
27 | \ PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN | |
28 | \ MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR | |
29 | \ ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR | |
30 | \ DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN | |
31 | \ OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR | |
32 | \ FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE | |
33 | \ DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, | |
34 | \ ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF | |
35 | \ SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. | |
36 | \ | |
37 | \ You acknowledge that this software is not designed, licensed or | |
38 | \ intended for use in the design, construction, operation or maintenance of | |
39 | \ any nuclear facility. | |
40 | \ | |
41 | \ ========== Copyright Header End ============================================ | |
42 | id: @(#)action-primitives.fth 1.2 03/12/08 13:22:19 | |
43 | purpose: | |
44 | copyright: Copyright 2000-2003 Sun Microsystems, Inc. All Rights Reserved | |
45 | copyright: Use is subject to license terms. | |
46 | ||
47 | ||
48 | transient | |
49 | ||
50 | variable sample-v'ble | |
51 | 0 constant sample-const | |
52 | ||
53 | ||
54 | \ Detect instances of the deplorable practice of changing the | |
55 | \ value of a constant. | |
56 | \ If it's being compiled-in to a run-time definition, raise | |
57 | \ a stink about it! | |
58 | \ If it's only happening at compile-time, i.e., in interpret | |
59 | \ mode, let it slide with only a minor whine. | |
60 | overload: is | |
61 | >in @ ' ( old->in target-cfa ) | |
62 | \ Is the target a constant? | |
63 | word-type ( old->in target-word-type ) | |
64 | \ For that matter, let's also keep alert | |
65 | \ for attempts at using IS with a variable. | |
66 | dup | |
67 | (') [ ' sample-v'ble word-type compile, ] = ( old->in targ-w-t v'ble? ) | |
68 | swap | |
69 | (') [ ' sample-const word-type compile, ] = ( old->in v'ble? const? ) | |
70 | tuck or if ( old->in const? ) | |
71 | where | |
72 | ." Shouldn't use IS with a " ( old->in const? ) | |
73 | dup if ." CONSTANT" else ." VARIABLE" then | |
74 | \ Let it slide if we're in interpret mode. | |
75 | state @ if \ Compiling-in to a run-time definition. | |
76 | ." ! " \ Raise a stink! ( old->in const? ) | |
77 | dup if | |
78 | ." Please redefine " | |
79 | over >in ! parse-word type | |
80 | ." as a VALUE" | |
81 | else | |
82 | ." Please use " | |
83 | over >in ! parse-word type | |
84 | ." ! instead" | |
85 | then | |
86 | (compile-time-warning) ( old->in const? ) | |
87 | then ." ." cr | |
88 | then drop ( old->in ) | |
89 | >in ! | |
90 | postpone is | |
91 | ; immediate | |
92 | ||
93 | resident |