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| MacBinary | 1990-04-27 | 60.1 KB | [TEXT/MPS ] |
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This file was processed as: MacBinary
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| Confidence | Program | Detection | Match Type | Support
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| 66%
| dexvert
| Compact Compressed (Unix) (archive/compact)
| ext
| Supported |
| 10%
| dexvert
| MacBinary (archive/macBinary)
| fallback
| Supported |
| 10%
| dexvert
| Jesper Olsen Module (music/jesperOlsen)
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| dexvert
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| Supported |
| 100%
| file
| MacBinary II, Fri Apr 27 14:06:13 1990, modified Fri Apr 27 14:06:13 1990, creator 'MPS ', type ASCII, 60942 bytes "tree.c" , at 0xee8e 382 bytes resource
| default (weak)
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| 99%
| file
| data
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| 49%
| TrID
| Macintosh plain text (MacBinary)
| default
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| 33%
| TrID
| TTComp archive compressed (bin-4K)
| default (weak)
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| 16%
| TrID
| MacBinary 2
| default (weak)
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| 100%
| siegfried
| fmt/1762 MacBinary (II)
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| 100%
| lsar
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| id metadata |
|---|
| key | value |
|---|
| macFileType | [TEXT] |
| macFileCreator | [MPS ] |
hex view+--------+-------------------------+-------------------------+--------+--------+
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|00000d30| 72 20 2a 6d 6f 6d 65 6e | 74 61 72 79 5f 66 69 72 |r *momen|tary_fir|
|00000d40| 73 74 6f 62 6a 3b 0d 0d | 2f 2a 20 4e 6f 6e 7a 65 |stobj;..|/* Nonze|
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|00000db0| 74 61 63 6b 20 6f 66 20 | 70 6c 61 63 65 73 20 74 |tack of |places t|
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|00000df0| 0d 73 74 72 75 63 74 20 | 6d 6f 6d 65 6e 74 61 72 |.struct |momentar|
|00000e00| 79 5f 6c 65 76 65 6c 0d | 7b 0d 20 20 2f 2a 20 50 |y_level.|{. /* P|
|00000e10| 6f 69 6e 74 65 72 20 62 | 61 63 6b 20 74 6f 20 70 |ointer b|ack to p|
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|00000e90| 72 20 2a 62 61 73 65 3b | 0d 20 20 2f 2a 20 56 61 |r *base;|. /* Va|
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|000013a0| 6f 62 73 74 61 63 6b 5f | 69 6e 69 74 20 28 26 74 |obstack_|init (&t|
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|000013d0| 69 72 73 74 6f 62 6a 20 | 3d 20 28 63 68 61 72 20 |irstobj |= (char |
|000013e0| 2a 29 20 6f 62 73 74 61 | 63 6b 5f 61 6c 6c 6f 63 |*) obsta|ck_alloc|
|000013f0| 20 28 26 74 65 6d 70 6f | 72 61 72 79 5f 6f 62 73 | (&tempo|rary_obs|
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|00001430| 20 6d 6f 6d 65 6e 74 61 | 72 79 5f 66 69 72 73 74 | momenta|ry_first|
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|00001450| 62 73 74 61 63 6b 5f 61 | 6c 6c 6f 63 20 28 26 6d |bstack_a|lloc (&m|
|00001460| 6f 6d 65 6e 74 61 72 79 | 5f 6f 62 73 74 61 63 6b |omentary|_obstack|
|00001470| 2c 20 30 29 3b 0d 20 20 | 6f 62 73 74 61 63 6b 5f |, 0);. |obstack_|
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|00001490| 61 6e 65 6e 74 5f 6f 62 | 73 74 61 63 6b 29 3b 0d |anent_ob|stack);.|
|000014a0| 20 20 6d 61 79 62 65 70 | 65 72 6d 61 6e 65 6e 74 | maybep|ermanent|
|000014b0| 5f 66 69 72 73 74 6f 62 | 6a 0d 20 20 20 20 3d 20 |_firstob|j. = |
|000014c0| 28 63 68 61 72 20 2a 29 | 20 6f 62 73 74 61 63 6b |(char *)| obstack|
|000014d0| 5f 61 6c 6c 6f 63 20 28 | 26 6d 61 79 62 65 70 65 |_alloc (|&maybepe|
|000014e0| 72 6d 61 6e 65 6e 74 5f | 6f 62 73 74 61 63 6b 2c |rmanent_|obstack,|
|000014f0| 20 30 29 3b 0d 0d 20 20 | 63 75 72 72 65 6e 74 5f | 0);.. |current_|
|00001500| 6f 62 73 74 61 63 6b 20 | 3d 20 26 70 65 72 6d 61 |obstack |= &perma|
|00001510| 6e 65 6e 74 5f 6f 62 73 | 74 61 63 6b 3b 0d 20 20 |nent_obs|tack;. |
|00001520| 65 78 70 72 65 73 73 69 | 6f 6e 5f 6f 62 73 74 61 |expressi|on_obsta|
|00001530| 63 6b 20 3d 20 26 70 65 | 72 6d 61 6e 65 6e 74 5f |ck = &pe|rmanent_|
|00001540| 6f 62 73 74 61 63 6b 3b | 0d 20 20 72 74 6c 5f 6f |obstack;|. rtl_o|
|00001550| 62 73 74 61 63 6b 20 3d | 20 73 61 76 65 61 62 6c |bstack =| saveabl|
|00001560| 65 5f 6f 62 73 74 61 63 | 6b 20 3d 20 26 70 65 72 |e_obstac|k = &per|
|00001570| 6d 61 6e 65 6e 74 5f 6f | 62 73 74 61 63 6b 3b 0d |manent_o|bstack;.|
|00001580| 20 20 74 72 65 65 5f 6e | 6f 64 65 5f 63 6f 75 6e | tree_n|ode_coun|
|00001590| 74 65 72 20 3d 20 31 3b | 0d 23 69 66 64 65 66 20 |ter = 1;|.#ifdef |
|000015a0| 4d 50 57 0d 20 20 2f 2a | 20 41 6c 6c 6f 63 61 74 |MPW. /*| Allocat|
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|00001650| 73 68 5f 74 61 62 6c 65 | 2c 20 73 69 7a 65 6f 66 |sh_table|, sizeof|
|00001660| 20 68 61 73 68 5f 74 61 | 62 6c 65 29 3b 0d 23 65 | hash_ta|ble);.#e|
|00001670| 6e 64 69 66 20 2f 2a 20 | 4d 50 57 20 2a 2f 0d 7d |ndif /* |MPW */.}|
|00001680| 0d 0d 2f 2a 20 53 74 61 | 72 74 20 61 6c 6c 6f 63 |../* Sta|rt alloc|
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|000016d0| 6e 20 73 74 61 72 74 5f | 66 75 6e 63 74 69 6f 6e |n start_|function|
|000016e0| 20 62 65 66 6f 72 65 20 | 70 61 72 73 69 6e 67 20 | before |parsing |
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|00001730| 6c 2c 20 61 6e 64 20 74 | 6f 20 67 6f 20 62 61 63 |l, and t|o go bac|
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|00001770| 70 6f 72 61 72 79 5f 61 | 6c 6c 6f 63 61 74 69 6f |porary_a|llocatio|
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|00001790| 70 6f 72 61 72 79 5f 61 | 6c 6c 6f 63 61 74 69 6f |porary_a|llocatio|
|000017a0| 6e 20 28 29 0d 7b 0d 20 | 20 63 75 72 72 65 6e 74 |n ().{. | current|
|000017b0| 5f 6f 62 73 74 61 63 6b | 20 3d 20 26 74 65 6d 70 |_obstack| = &temp|
|000017c0| 6f 72 61 72 79 5f 6f 62 | 73 74 61 63 6b 3b 0d 20 |orary_ob|stack;. |
|000017d0| 20 65 78 70 72 65 73 73 | 69 6f 6e 5f 6f 62 73 74 | express|ion_obst|
|000017e0| 61 63 6b 20 3d 20 26 74 | 65 6d 70 6f 72 61 72 79 |ack = &t|emporary|
|000017f0| 5f 6f 62 73 74 61 63 6b | 3b 0d 20 20 72 74 6c 5f |_obstack|;. rtl_|
|00001800| 6f 62 73 74 61 63 6b 20 | 3d 20 73 61 76 65 61 62 |obstack |= saveab|
|00001810| 6c 65 5f 6f 62 73 74 61 | 63 6b 20 3d 20 26 6d 61 |le_obsta|ck = &ma|
|00001820| 79 62 65 70 65 72 6d 61 | 6e 65 6e 74 5f 6f 62 73 |ybeperma|nent_obs|
|00001830| 74 61 63 6b 3b 0d 20 20 | 6d 6f 6d 65 6e 74 61 72 |tack;. |momentar|
|00001840| 79 5f 73 74 61 63 6b 20 | 3d 20 30 3b 0d 7d 0d 0d |y_stack |= 0;.}..|
|00001850| 2f 2a 20 53 74 61 72 74 | 20 61 6c 6c 6f 63 61 74 |/* Start| allocat|
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|00001870| 6e 65 6e 74 20 6f 62 73 | 74 61 63 6b 20 62 75 74 |nent obs|tack but|
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|00001890| 68 65 20 74 65 6d 70 6f | 72 61 72 79 20 64 61 74 |he tempo|rary dat|
|000018a0| 61 2e 20 20 41 66 74 65 | 72 20 63 61 6c 6c 69 6e |a. Afte|r callin|
|000018b0| 67 20 74 68 69 73 2c 20 | 63 61 6c 6c 0d 20 20 20 |g this, |call. |
|000018c0| 60 70 65 72 6d 61 6e 65 | 6e 74 5f 61 6c 6c 6f 63 |`permane|nt_alloc|
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|00001930| 72 72 65 6e 74 5f 6f 62 | 73 74 61 63 6b 20 3d 20 |rrent_ob|stack = |
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|00001950| 63 6b 3b 0d 20 20 65 78 | 70 72 65 73 73 69 6f 6e |ck;. ex|pression|
|00001960| 5f 6f 62 73 74 61 63 6b | 20 3d 20 26 70 65 72 6d |_obstack| = &perm|
|00001970| 61 6e 65 6e 74 5f 6f 62 | 73 74 61 63 6b 3b 0d 20 |anent_ob|stack;. |
|00001980| 20 72 74 6c 5f 6f 62 73 | 74 61 63 6b 20 3d 20 73 | rtl_obs|tack = s|
|00001990| 61 76 65 61 62 6c 65 5f | 6f 62 73 74 61 63 6b 20 |aveable_|obstack |
|000019a0| 3d 20 26 70 65 72 6d 61 | 6e 65 6e 74 5f 6f 62 73 |= &perma|nent_obs|
|000019b0| 74 61 63 6b 3b 0d 7d 0d | 0d 2f 2a 20 52 65 73 75 |tack;.}.|./* Resu|
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|000019e0| 62 73 74 61 63 6b 2c 20 | 75 6e 64 6f 69 6e 67 0d |bstack, |undoing.|
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|00001a10| 6f 63 61 74 69 6f 6e 27 | 2e 20 20 2a 2f 0d 0d 76 |ocation'|. */..v|
|00001a20| 6f 69 64 0d 72 65 73 75 | 6d 65 5f 74 65 6d 70 6f |oid.resu|me_tempo|
|00001a30| 72 61 72 79 5f 61 6c 6c | 6f 63 61 74 69 6f 6e 20 |rary_all|ocation |
|00001a40| 28 29 0d 7b 0d 20 20 63 | 75 72 72 65 6e 74 5f 6f |().{. c|urrent_o|
|00001a50| 62 73 74 61 63 6b 20 3d | 20 26 74 65 6d 70 6f 72 |bstack =| &tempor|
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|00005080| 5f 46 4c 4f 41 54 5f 56 | 41 4c 55 45 0d 20 20 43 |_FLOAT_V|ALUE. C|
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|000050c0| 20 20 54 52 45 45 5f 52 | 45 41 4c 5f 43 53 54 20 | TREE_R|EAL_CST |
|000050d0| 28 76 29 20 3d 20 64 3b | 0d 20 20 72 65 74 75 72 |(v) = d;|. retur|
|000050e0| 6e 20 76 3b 0d 7d 0d 0d | 23 65 6e 64 69 66 20 2f |n v;.}..|#endif /|
|000050f0| 2a 20 6e 6f 74 20 52 45 | 41 4c 5f 49 53 5f 4e 4f |* not RE|AL_IS_NO|
|00005100| 54 5f 44 4f 55 42 4c 45 | 2c 20 6f 72 20 52 45 41 |T_DOUBLE|, or REA|
|00005110| 4c 5f 41 52 49 54 48 4d | 45 54 49 43 20 2a 2f 0d |L_ARITHM|ETIC */.|
|00005120| 0d 2f 2a 20 52 65 74 75 | 72 6e 20 61 20 6e 65 77 |./* Retu|rn a new|
|00005130| 6c 79 20 63 6f 6e 73 74 | 72 75 63 74 65 64 20 53 |ly const|ructed S|
|00005140| 54 52 49 4e 47 5f 43 53 | 54 20 6e 6f 64 65 20 77 |TRING_CS|T node w|
|00005150| 68 6f 73 65 20 76 61 6c | 75 65 20 69 73 0d 20 20 |hose val|ue is. |
|00005160| 20 74 68 65 20 4c 45 4e | 20 63 68 61 72 61 63 74 | the LEN| charact|
|00005170| 65 72 73 20 61 74 20 53 | 54 52 2e 0d 20 20 20 54 |ers at S|TR.. T|
|00005180| 68 65 20 54 52 45 45 5f | 54 59 50 45 20 69 73 20 |he TREE_|TYPE is |
|00005190| 6e 6f 74 20 69 6e 69 74 | 69 61 6c 69 7a 65 64 2e |not init|ialized.|
|000051a0| 20 20 2a 2f 0d 0d 74 72 | 65 65 0d 62 75 69 6c 64 | */..tr|ee.build|
|000051b0| 5f 73 74 72 69 6e 67 20 | 28 6c 65 6e 2c 20 73 74 |_string |(len, st|
|000051c0| 72 29 0d 20 20 20 20 20 | 69 6e 74 20 6c 65 6e 3b |r). |int len;|
|000051d0| 0d 20 20 20 20 20 63 68 | 61 72 20 2a 73 74 72 3b |. ch|ar *str;|
|000051e0| 0d 7b 0d 20 20 72 65 67 | 69 73 74 65 72 20 74 72 |.{. reg|ister tr|
|000051f0| 65 65 20 73 20 3d 20 6d | 61 6b 65 5f 6e 6f 64 65 |ee s = m|ake_node|
|00005200| 20 28 53 54 52 49 4e 47 | 5f 43 53 54 29 3b 0d 20 | (STRING|_CST);. |
|00005210| 20 54 52 45 45 5f 53 54 | 52 49 4e 47 5f 4c 45 4e | TREE_ST|RING_LEN|
|00005220| 47 54 48 20 28 73 29 20 | 3d 20 6c 65 6e 3b 0d 20 |GTH (s) |= len;. |
|00005230| 20 54 52 45 45 5f 53 54 | 52 49 4e 47 5f 50 4f 49 | TREE_ST|RING_POI|
|00005240| 4e 54 45 52 20 28 73 29 | 20 3d 20 6f 62 73 74 61 |NTER (s)| = obsta|
|00005250| 63 6b 5f 63 6f 70 79 30 | 20 28 73 61 76 65 61 62 |ck_copy0| (saveab|
|00005260| 6c 65 5f 6f 62 73 74 61 | 63 6b 2c 20 73 74 72 2c |le_obsta|ck, str,|
|00005270| 20 6c 65 6e 29 3b 0d 20 | 20 72 65 74 75 72 6e 20 | len);. | return |
|00005280| 73 3b 0d 7d 0d 0d 2f 2a | 20 52 65 74 75 72 6e 20 |s;.}../*| Return |
|00005290| 61 20 6e 65 77 6c 79 20 | 63 6f 6e 73 74 72 75 63 |a newly |construc|
|000052a0| 74 65 64 20 43 4f 4d 50 | 4c 45 58 5f 43 53 54 20 |ted COMP|LEX_CST |
|000052b0| 6e 6f 64 65 20 77 68 6f | 73 65 20 76 61 6c 75 65 |node who|se value|
|000052c0| 20 69 73 0d 20 20 20 73 | 70 65 63 69 66 69 65 64 | is. s|pecified|
|000052d0| 20 62 79 20 74 68 65 20 | 72 65 61 6c 20 61 6e 64 | by the |real and|
|000052e0| 20 69 6d 61 67 69 6e 61 | 72 79 20 70 61 72 74 73 | imagina|ry parts|
|000052f0| 20 52 45 41 4c 20 61 6e | 64 20 49 4d 41 47 2e 0d | REAL an|d IMAG..|
|00005300| 20 20 20 42 6f 74 68 20 | 52 45 41 4c 20 61 6e 64 | Both |REAL and|
|00005310| 20 49 4d 41 47 20 73 68 | 6f 75 6c 64 20 62 65 20 | IMAG sh|ould be |
|00005320| 63 6f 6e 73 74 61 6e 74 | 20 6e 6f 64 65 73 2e 0d |constant| nodes..|
|00005330| 20 20 20 54 68 65 20 54 | 52 45 45 5f 54 59 50 45 | The T|REE_TYPE|
|00005340| 20 69 73 20 6e 6f 74 20 | 69 6e 69 74 69 61 6c 69 | is not |initiali|
|00005350| 7a 65 64 2e 20 20 2a 2f | 0d 0d 74 72 65 65 0d 62 |zed. */|..tree.b|
|00005360| 75 69 6c 64 5f 63 6f 6d | 70 6c 65 78 20 28 72 65 |uild_com|plex (re|
|00005370| 61 6c 2c 20 69 6d 61 67 | 29 0d 20 20 20 20 20 74 |al, imag|). t|
|00005380| 72 65 65 20 72 65 61 6c | 2c 20 69 6d 61 67 3b 0d |ree real|, imag;.|
|00005390| 7b 0d 20 20 72 65 67 69 | 73 74 65 72 20 74 72 65 |{. regi|ster tre|
|000053a0| 65 20 74 20 3d 20 6d 61 | 6b 65 5f 6e 6f 64 65 20 |e t = ma|ke_node |
|000053b0| 28 43 4f 4d 50 4c 45 58 | 5f 43 53 54 29 3b 0d 20 |(COMPLEX|_CST);. |
|000053c0| 20 54 52 45 45 5f 52 45 | 41 4c 50 41 52 54 20 28 | TREE_RE|ALPART (|
|000053d0| 74 29 20 3d 20 72 65 61 | 6c 3b 0d 20 20 54 52 45 |t) = rea|l;. TRE|
|000053e0| 45 5f 49 4d 41 47 50 41 | 52 54 20 28 74 29 20 3d |E_IMAGPA|RT (t) =|
|000053f0| 20 69 6d 61 67 3b 0d 20 | 20 72 65 74 75 72 6e 20 | imag;. | return |
|00005400| 74 3b 0d 7d 0d 0c 0d 2f | 2a 20 52 65 74 75 72 6e |t;.}.../|* Return|
|00005410| 20 31 20 69 66 20 45 58 | 50 52 20 69 73 20 74 68 | 1 if EX|PR is th|
|00005420| 65 20 69 6e 74 65 67 65 | 72 20 63 6f 6e 73 74 61 |e intege|r consta|
|00005430| 6e 74 20 7a 65 72 6f 2e | 20 20 2a 2f 0d 0d 69 6e |nt zero.| */..in|
|00005440| 74 0d 69 6e 74 65 67 65 | 72 5f 7a 65 72 6f 70 20 |t.intege|r_zerop |
|00005450| 28 65 78 70 72 29 0d 20 | 20 20 20 20 74 72 65 65 |(expr). | tree|
|00005460| 20 65 78 70 72 3b 0d 7b | 0d 20 20 72 65 74 75 72 | expr;.{|. retur|
|00005470| 6e 20 28 54 52 45 45 5f | 43 4f 44 45 20 28 65 78 |n (TREE_|CODE (ex|
|00005480| 70 72 29 20 3d 3d 20 49 | 4e 54 45 47 45 52 5f 43 |pr) == I|NTEGER_C|
|00005490| 53 54 0d 09 20 20 26 26 | 20 54 52 45 45 5f 49 4e |ST.. &&| TREE_IN|
|000054a0| 54 5f 43 53 54 5f 4c 4f | 57 20 28 65 78 70 72 29 |T_CST_LO|W (expr)|
|000054b0| 20 3d 3d 20 30 0d 09 20 | 20 26 26 20 54 52 45 45 | == 0.. | && TREE|
|000054c0| 5f 49 4e 54 5f 43 53 54 | 5f 48 49 47 48 20 28 65 |_INT_CST|_HIGH (e|
|000054d0| 78 70 72 29 20 3d 3d 20 | 30 29 3b 0d 7d 0d 0d 2f |xpr) == |0);.}../|
|000054e0| 2a 20 52 65 74 75 72 6e | 20 31 20 69 66 20 45 58 |* Return| 1 if EX|
|000054f0| 50 52 20 69 73 20 74 68 | 65 20 69 6e 74 65 67 65 |PR is th|e intege|
|00005500| 72 20 63 6f 6e 73 74 61 | 6e 74 20 6f 6e 65 2e 20 |r consta|nt one. |
|00005510| 20 2a 2f 0d 0d 69 6e 74 | 0d 69 6e 74 65 67 65 72 | */..int|.integer|
|00005520| 5f 6f 6e 65 70 20 28 65 | 78 70 72 29 0d 20 20 20 |_onep (e|xpr). |
|00005530| 20 20 74 72 65 65 20 65 | 78 70 72 3b 0d 7b 0d 20 | tree e|xpr;.{. |
|00005540| 20 72 65 74 75 72 6e 20 | 28 54 52 45 45 5f 43 4f | return |(TREE_CO|
|00005550| 44 45 20 28 65 78 70 72 | 29 20 3d 3d 20 49 4e 54 |DE (expr|) == INT|
|00005560| 45 47 45 52 5f 43 53 54 | 0d 09 20 20 26 26 20 54 |EGER_CST|.. && T|
|00005570| 52 45 45 5f 49 4e 54 5f | 43 53 54 5f 4c 4f 57 20 |REE_INT_|CST_LOW |
|00005580| 28 65 78 70 72 29 20 3d | 3d 20 31 0d 09 20 20 26 |(expr) =|= 1.. &|
|00005590| 26 20 54 52 45 45 5f 49 | 4e 54 5f 43 53 54 5f 48 |& TREE_I|NT_CST_H|
|000055a0| 49 47 48 20 28 65 78 70 | 72 29 20 3d 3d 20 30 29 |IGH (exp|r) == 0)|
|000055b0| 3b 0d 7d 0d 0d 2f 2a 20 | 52 65 74 75 72 6e 20 31 |;.}../* |Return 1|
|000055c0| 20 69 66 20 45 58 50 52 | 20 69 73 20 61 6e 20 69 | if EXPR| is an i|
|000055d0| 6e 74 65 67 65 72 20 63 | 6f 6e 74 61 69 6e 69 6e |nteger c|ontainin|
|000055e0| 67 20 61 6c 6c 20 31 27 | 73 0d 20 20 20 69 6e 20 |g all 1'|s. in |
|000055f0| 61 73 20 6d 75 63 68 20 | 70 72 65 63 69 73 69 6f |as much |precisio|
|00005600| 6e 20 61 73 20 69 74 20 | 63 6f 6e 74 61 69 6e 73 |n as it |contains|
|00005610| 2e 20 20 2a 2f 0d 0d 69 | 6e 74 0d 69 6e 74 65 67 |. */..i|nt.integ|
|00005620| 65 72 5f 61 6c 6c 5f 6f | 6e 65 73 70 20 28 65 78 |er_all_o|nesp (ex|
|00005630| 70 72 29 0d 20 20 20 20 | 20 74 72 65 65 20 65 78 |pr). | tree ex|
|00005640| 70 72 3b 0d 7b 0d 20 20 | 72 65 67 69 73 74 65 72 |pr;.{. |register|
|00005650| 20 69 6e 74 20 70 72 65 | 63 3b 0d 20 20 72 65 67 | int pre|c;. reg|
|00005660| 69 73 74 65 72 20 69 6e | 74 20 75 6e 73 3b 0d 0d |ister in|t uns;..|
|00005670| 20 20 69 66 20 28 54 52 | 45 45 5f 43 4f 44 45 20 | if (TR|EE_CODE |
|00005680| 28 65 78 70 72 29 20 21 | 3d 20 49 4e 54 45 47 45 |(expr) !|= INTEGE|
|00005690| 52 5f 43 53 54 29 0d 20 | 20 20 20 72 65 74 75 72 |R_CST). | retur|
|000056a0| 6e 20 30 3b 0d 0d 20 20 | 75 6e 73 20 3d 20 54 52 |n 0;.. |uns = TR|
|000056b0| 45 45 5f 55 4e 53 49 47 | 4e 45 44 20 28 54 52 45 |EE_UNSIG|NED (TRE|
|000056c0| 45 5f 54 59 50 45 20 28 | 65 78 70 72 29 29 3b 0d |E_TYPE (|expr));.|
|000056d0| 20 20 69 66 20 28 21 75 | 6e 73 29 0d 20 20 20 20 | if (!u|ns). |
|000056e0| 72 65 74 75 72 6e 20 54 | 52 45 45 5f 49 4e 54 5f |return T|REE_INT_|
|000056f0| 43 53 54 5f 4c 4f 57 20 | 28 65 78 70 72 29 20 3d |CST_LOW |(expr) =|
|00005700| 3d 20 2d 31 20 26 26 20 | 54 52 45 45 5f 49 4e 54 |= -1 && |TREE_INT|
|00005710| 5f 43 53 54 5f 48 49 47 | 48 20 28 65 78 70 72 29 |_CST_HIG|H (expr)|
|00005720| 20 3d 3d 20 2d 31 3b 0d | 0d 20 20 70 72 65 63 20 | == -1;.|. prec |
|00005730| 3d 20 54 59 50 45 5f 50 | 52 45 43 49 53 49 4f 4e |= TYPE_P|RECISION|
|00005740| 20 28 54 52 45 45 5f 54 | 59 50 45 20 28 65 78 70 | (TREE_T|YPE (exp|
|00005750| 72 29 29 3b 0d 20 20 69 | 66 20 28 70 72 65 63 20 |r));. i|f (prec |
|00005760| 3e 3d 20 48 4f 53 54 5f | 42 49 54 53 5f 50 45 52 |>= HOST_|BITS_PER|
|00005770| 5f 49 4e 54 29 0d 20 20 | 20 20 72 65 74 75 72 6e |_INT). | return|
|00005780| 20 54 52 45 45 5f 49 4e | 54 5f 43 53 54 5f 4c 4f | TREE_IN|T_CST_LO|
|00005790| 57 20 28 65 78 70 72 29 | 20 3d 3d 20 2d 31 0d 20 |W (expr)| == -1. |
|000057a0| 20 20 20 20 20 26 26 20 | 54 52 45 45 5f 49 4e 54 | && |TREE_INT|
|000057b0| 5f 43 53 54 5f 48 49 47 | 48 20 28 65 78 70 72 29 |_CST_HIG|H (expr)|
|000057c0| 20 3d 3d 20 28 31 20 3c | 3c 20 28 70 72 65 63 20 | == (1 <|< (prec |
|000057d0| 2d 20 48 4f 53 54 5f 42 | 49 54 53 5f 50 45 52 5f |- HOST_B|ITS_PER_|
|000057e0| 49 4e 54 29 29 20 2d 20 | 31 3b 0d 20 20 65 6c 73 |INT)) - |1;. els|
|000057f0| 65 0d 20 20 20 20 72 65 | 74 75 72 6e 20 54 52 45 |e. re|turn TRE|
|00005800| 45 5f 49 4e 54 5f 43 53 | 54 5f 4c 4f 57 20 28 65 |E_INT_CS|T_LOW (e|
|00005810| 78 70 72 29 20 3d 3d 20 | 28 31 20 3c 3c 20 70 72 |xpr) == |(1 << pr|
|00005820| 65 63 29 20 2d 20 31 3b | 0d 7d 0d 0c 0d 2f 2a 20 |ec) - 1;|.}.../* |
|00005830| 52 65 74 75 72 6e 20 74 | 68 65 20 6c 65 6e 67 74 |Return t|he lengt|
|00005840| 68 20 6f 66 20 61 20 63 | 68 61 69 6e 20 6f 66 20 |h of a c|hain of |
|00005850| 6e 6f 64 65 73 20 63 68 | 61 69 6e 65 64 20 74 68 |nodes ch|ained th|
|00005860| 72 6f 75 67 68 20 54 52 | 45 45 5f 43 48 41 49 4e |rough TR|EE_CHAIN|
|00005870| 2e 0d 20 20 20 57 65 20 | 65 78 70 65 63 74 20 61 |.. We |expect a|
|00005880| 20 6e 75 6c 6c 20 70 6f | 69 6e 74 65 72 20 74 6f | null po|inter to|
|00005890| 20 6d 61 72 6b 20 74 68 | 65 20 65 6e 64 20 6f 66 | mark th|e end of|
|000058a0| 20 74 68 65 20 63 68 61 | 69 6e 2e 0d 20 20 20 54 | the cha|in.. T|
|000058b0| 68 69 73 20 69 73 20 74 | 68 65 20 4c 69 73 70 20 |his is t|he Lisp |
|000058c0| 70 72 69 6d 69 74 69 76 | 65 20 60 6c 65 6e 67 74 |primitiv|e `lengt|
|000058d0| 68 27 2e 20 20 2a 2f 0d | 0d 69 6e 74 0d 6c 69 73 |h'. */.|.int.lis|
|000058e0| 74 5f 6c 65 6e 67 74 68 | 20 28 74 29 0d 20 20 20 |t_length| (t). |
|000058f0| 20 20 74 72 65 65 20 74 | 3b 0d 7b 0d 20 20 72 65 | tree t|;.{. re|
|00005900| 67 69 73 74 65 72 20 74 | 72 65 65 20 74 61 69 6c |gister t|ree tail|
|00005910| 3b 0d 20 20 72 65 67 69 | 73 74 65 72 20 69 6e 74 |;. regi|ster int|
|00005920| 20 6c 65 6e 20 3d 20 30 | 3b 0d 0d 20 20 66 6f 72 | len = 0|;.. for|
|00005930| 20 28 74 61 69 6c 20 3d | 20 74 3b 20 74 61 69 6c | (tail =| t; tail|
|00005940| 3b 20 74 61 69 6c 20 3d | 20 54 52 45 45 5f 43 48 |; tail =| TREE_CH|
|00005950| 41 49 4e 20 28 74 61 69 | 6c 29 29 0d 20 20 20 20 |AIN (tai|l)). |
|00005960| 6c 65 6e 2b 2b 3b 0d 0d | 20 20 72 65 74 75 72 6e |len++;..| return|
|00005970| 20 6c 65 6e 3b 0d 7d 0d | 0d 2f 2a 20 43 6f 6e 63 | len;.}.|./* Conc|
|00005980| 61 74 65 6e 61 74 65 20 | 74 77 6f 20 63 68 61 69 |atenate |two chai|
|00005990| 6e 73 20 6f 66 20 6e 6f | 64 65 73 20 28 63 68 61 |ns of no|des (cha|
|000059a0| 69 6e 65 64 20 74 68 72 | 6f 75 67 68 20 54 52 45 |ined thr|ough TRE|
|000059b0| 45 5f 43 48 41 49 4e 29 | 0d 20 20 20 62 79 20 6d |E_CHAIN)|. by m|
|000059c0| 6f 64 69 66 79 69 6e 67 | 20 74 68 65 20 6c 61 73 |odifying| the las|
|000059d0| 74 20 6e 6f 64 65 20 69 | 6e 20 63 68 61 69 6e 20 |t node i|n chain |
|000059e0| 31 20 74 6f 20 70 6f 69 | 6e 74 20 74 6f 20 63 68 |1 to poi|nt to ch|
|000059f0| 61 69 6e 20 32 2e 0d 20 | 20 20 54 68 69 73 20 69 |ain 2.. | This i|
|00005a00| 73 20 74 68 65 20 4c 69 | 73 70 20 70 72 69 6d 69 |s the Li|sp primi|
|00005a10| 74 69 76 65 20 60 6e 63 | 6f 6e 63 27 2e 20 20 2a |tive `nc|onc'. *|
|00005a20| 2f 0d 0d 74 72 65 65 0d | 63 68 61 69 6e 6f 6e 20 |/..tree.|chainon |
|00005a30| 28 6f 70 31 2c 20 6f 70 | 32 29 0d 20 20 20 20 20 |(op1, op|2). |
|00005a40| 74 72 65 65 20 6f 70 31 | 2c 20 6f 70 32 3b 0d 7b |tree op1|, op2;.{|
|00005a50| 0d 20 20 74 72 65 65 20 | 74 3b 0d 0d 20 20 69 66 |. tree |t;.. if|
|00005a60| 20 28 6f 70 31 29 0d 20 | 20 20 20 7b 0d 20 20 20 | (op1). | {. |
|00005a70| 20 20 20 66 6f 72 20 28 | 74 20 3d 20 6f 70 31 3b | for (|t = op1;|
|00005a80| 20 54 52 45 45 5f 43 48 | 41 49 4e 20 28 74 29 3b | TREE_CH|AIN (t);|
|00005a90| 20 74 20 3d 20 54 52 45 | 45 5f 43 48 41 49 4e 20 | t = TRE|E_CHAIN |
|00005aa0| 28 74 29 29 0d 09 69 66 | 20 28 74 20 3d 3d 20 6f |(t))..if| (t == o|
|00005ab0| 70 32 29 20 61 62 6f 72 | 74 20 28 29 3b 09 2f 2a |p2) abor|t ();./*|
|00005ac0| 20 43 69 72 63 75 6c 61 | 72 69 74 79 20 62 65 69 | Circula|rity bei|
|00005ad0| 6e 67 20 63 72 65 61 74 | 65 64 20 2a 2f 0d 20 20 |ng creat|ed */. |
|00005ae0| 20 20 20 20 54 52 45 45 | 5f 43 48 41 49 4e 20 28 | TREE|_CHAIN (|
|00005af0| 74 29 20 3d 20 6f 70 32 | 3b 0d 20 20 20 20 20 20 |t) = op2|;. |
|00005b00| 72 65 74 75 72 6e 20 6f | 70 31 3b 0d 20 20 20 20 |return o|p1;. |
|00005b10| 7d 0d 20 20 65 6c 73 65 | 20 72 65 74 75 72 6e 20 |}. else| return |
|00005b20| 6f 70 32 3b 0d 7d 0d 0d | 2f 2a 20 52 65 74 75 72 |op2;.}..|/* Retur|
|00005b30| 6e 20 61 20 6e 65 77 6c | 79 20 63 72 65 61 74 65 |n a newl|y create|
|00005b40| 64 20 54 52 45 45 5f 4c | 49 53 54 20 6e 6f 64 65 |d TREE_L|IST node|
|00005b50| 20 77 68 6f 73 65 0d 20 | 20 20 70 75 72 70 6f 73 | whose. | purpos|
|00005b60| 65 20 61 6e 64 20 76 61 | 6c 75 65 20 66 69 65 6c |e and va|lue fiel|
|00005b70| 64 73 20 61 72 65 20 50 | 41 52 4d 20 61 6e 64 20 |ds are P|ARM and |
|00005b80| 56 41 4c 55 45 2e 20 20 | 2a 2f 0d 0d 74 72 65 65 |VALUE. |*/..tree|
|00005b90| 0d 62 75 69 6c 64 5f 74 | 72 65 65 5f 6c 69 73 74 |.build_t|ree_list|
|00005ba0| 20 28 70 61 72 6d 2c 20 | 76 61 6c 75 65 29 0d 20 | (parm, |value). |
|00005bb0| 20 20 20 20 74 72 65 65 | 20 70 61 72 6d 2c 20 76 | tree| parm, v|
|00005bc0| 61 6c 75 65 3b 0d 7b 0d | 20 20 72 65 67 69 73 74 |alue;.{.| regist|
|00005bd0| 65 72 20 74 72 65 65 20 | 74 20 3d 20 6d 61 6b 65 |er tree |t = make|
|00005be0| 5f 6e 6f 64 65 20 28 54 | 52 45 45 5f 4c 49 53 54 |_node (T|REE_LIST|
|00005bf0| 29 3b 0d 20 20 54 52 45 | 45 5f 50 55 52 50 4f 53 |);. TRE|E_PURPOS|
|00005c00| 45 20 28 74 29 20 3d 20 | 70 61 72 6d 3b 0d 20 20 |E (t) = |parm;. |
|00005c10| 54 52 45 45 5f 56 41 4c | 55 45 20 28 74 29 20 3d |TREE_VAL|UE (t) =|
|00005c20| 20 76 61 6c 75 65 3b 0d | 20 20 72 65 74 75 72 6e | value;.| return|
|00005c30| 20 74 3b 0d 7d 0d 0d 2f | 2a 20 52 65 74 75 72 6e | t;.}../|* Return|
|00005c40| 20 61 20 6e 65 77 6c 79 | 20 63 72 65 61 74 65 64 | a newly| created|
|00005c50| 20 54 52 45 45 5f 4c 49 | 53 54 20 6e 6f 64 65 20 | TREE_LI|ST node |
|00005c60| 77 68 6f 73 65 0d 20 20 | 20 70 75 72 70 6f 73 65 |whose. | purpose|
|00005c70| 20 61 6e 64 20 76 61 6c | 75 65 20 66 69 65 6c 64 | and val|ue field|
|00005c80| 73 20 61 72 65 20 50 41 | 52 4d 20 61 6e 64 20 56 |s are PA|RM and V|
|00005c90| 41 4c 55 45 0d 20 20 20 | 61 6e 64 20 77 68 6f 73 |ALUE. |and whos|
|00005ca0| 65 20 54 52 45 45 5f 43 | 48 41 49 4e 20 69 73 20 |e TREE_C|HAIN is |
|00005cb0| 43 48 41 49 4e 2e 20 20 | 2a 2f 0d 0d 74 72 65 65 |CHAIN. |*/..tree|
|00005cc0| 0d 74 72 65 65 5f 63 6f | 6e 73 20 28 70 75 72 70 |.tree_co|ns (purp|
|00005cd0| 6f 73 65 2c 20 76 61 6c | 75 65 2c 20 63 68 61 69 |ose, val|ue, chai|
|00005ce0| 6e 29 0d 20 20 20 20 20 | 74 72 65 65 20 70 75 72 |n). |tree pur|
|00005cf0| 70 6f 73 65 2c 20 76 61 | 6c 75 65 2c 20 63 68 61 |pose, va|lue, cha|
|00005d00| 69 6e 3b 0d 7b 0d 20 20 | 72 65 67 69 73 74 65 72 |in;.{. |register|
|00005d10| 20 74 72 65 65 20 6e 6f | 64 65 20 3d 20 6d 61 6b | tree no|de = mak|
|00005d20| 65 5f 6e 6f 64 65 20 28 | 54 52 45 45 5f 4c 49 53 |e_node (|TREE_LIS|
|00005d30| 54 29 3b 0d 20 20 54 52 | 45 45 5f 43 48 41 49 4e |T);. TR|EE_CHAIN|
|00005d40| 20 28 6e 6f 64 65 29 20 | 3d 20 63 68 61 69 6e 3b | (node) |= chain;|
|00005d50| 0d 20 20 54 52 45 45 5f | 50 55 52 50 4f 53 45 20 |. TREE_|PURPOSE |
|00005d60| 28 6e 6f 64 65 29 20 3d | 20 70 75 72 70 6f 73 65 |(node) =| purpose|
|00005d70| 3b 0d 20 20 54 52 45 45 | 5f 56 41 4c 55 45 20 28 |;. TREE|_VALUE (|
|00005d80| 6e 6f 64 65 29 20 3d 20 | 76 61 6c 75 65 3b 0d 20 |node) = |value;. |
|00005d90| 20 72 65 74 75 72 6e 20 | 6e 6f 64 65 3b 0d 7d 0d | return |node;.}.|
|00005da0| 0d 2f 2a 20 53 61 6d 65 | 20 61 73 20 60 74 72 65 |./* Same| as `tre|
|00005db0| 65 5f 63 6f 6e 73 27 20 | 62 75 74 20 6d 61 6b 65 |e_cons' |but make|
|00005dc0| 20 61 20 70 65 72 6d 61 | 6e 65 6e 74 20 6f 62 6a | a perma|nent obj|
|00005dd0| 65 63 74 2e 20 20 2a 2f | 0d 0d 74 72 65 65 0d 70 |ect. */|..tree.p|
|00005de0| 65 72 6d 5f 74 72 65 65 | 5f 63 6f 6e 73 20 28 70 |erm_tree|_cons (p|
|00005df0| 75 72 70 6f 73 65 2c 20 | 76 61 6c 75 65 2c 20 63 |urpose, |value, c|
|00005e00| 68 61 69 6e 29 0d 20 20 | 20 20 20 74 72 65 65 20 |hain). | tree |
|00005e10| 70 75 72 70 6f 73 65 2c | 20 76 61 6c 75 65 2c 20 |purpose,| value, |
|00005e20| 63 68 61 69 6e 3b 0d 7b | 0d 20 20 72 65 67 69 73 |chain;.{|. regis|
|00005e30| 74 65 72 20 74 72 65 65 | 20 6e 6f 64 65 3b 0d 20 |ter tree| node;. |
|00005e40| 20 72 65 67 69 73 74 65 | 72 20 73 74 72 75 63 74 | registe|r struct|
|00005e50| 20 6f 62 73 74 61 63 6b | 20 2a 61 6d 62 69 65 6e | obstack| *ambien|
|00005e60| 74 5f 6f 62 73 74 61 63 | 6b 20 3d 20 63 75 72 72 |t_obstac|k = curr|
|00005e70| 65 6e 74 5f 6f 62 73 74 | 61 63 6b 3b 0d 20 20 63 |ent_obst|ack;. c|
|00005e80| 75 72 72 65 6e 74 5f 6f | 62 73 74 61 63 6b 20 3d |urrent_o|bstack =|
|00005e90| 20 26 70 65 72 6d 61 6e | 65 6e 74 5f 6f 62 73 74 | &perman|ent_obst|
|00005ea0| 61 63 6b 3b 0d 0d 20 20 | 6e 6f 64 65 20 3d 20 6d |ack;.. |node = m|
|00005eb0| 61 6b 65 5f 6e 6f 64 65 | 20 28 54 52 45 45 5f 4c |ake_node| (TREE_L|
|00005ec0| 49 53 54 29 3b 0d 20 20 | 54 52 45 45 5f 43 48 41 |IST);. |TREE_CHA|
|00005ed0| 49 4e 20 28 6e 6f 64 65 | 29 20 3d 20 63 68 61 69 |IN (node|) = chai|
|00005ee0| 6e 3b 0d 20 20 54 52 45 | 45 5f 50 55 52 50 4f 53 |n;. TRE|E_PURPOS|
|00005ef0| 45 20 28 6e 6f 64 65 29 | 20 3d 20 70 75 72 70 6f |E (node)| = purpo|
|00005f00| 73 65 3b 0d 20 20 54 52 | 45 45 5f 56 41 4c 55 45 |se;. TR|EE_VALUE|
|00005f10| 20 28 6e 6f 64 65 29 20 | 3d 20 76 61 6c 75 65 3b | (node) |= value;|
|00005f20| 0d 0d 20 20 63 75 72 72 | 65 6e 74 5f 6f 62 73 74 |.. curr|ent_obst|
|00005f30| 61 63 6b 20 3d 20 61 6d | 62 69 65 6e 74 5f 6f 62 |ack = am|bient_ob|
|00005f40| 73 74 61 63 6b 3b 0d 20 | 20 72 65 74 75 72 6e 20 |stack;. | return |
|00005f50| 6e 6f 64 65 3b 0d 7d 0d | 0d 2f 2a 20 53 61 6d 65 |node;.}.|./* Same|
|00005f60| 20 61 73 20 60 74 72 65 | 65 5f 63 6f 6e 73 27 2c | as `tre|e_cons',|
|00005f70| 20 62 75 74 20 6d 61 6b | 65 20 74 68 69 73 20 6e | but mak|e this n|
|00005f80| 6f 64 65 20 74 65 6d 70 | 6f 72 61 72 79 2c 20 72 |ode temp|orary, r|
|00005f90| 65 67 61 72 64 6c 65 73 | 73 2e 20 20 2a 2f 0d 0d |egardles|s. */..|
|00005fa0| 74 72 65 65 0d 74 65 6d | 70 5f 74 72 65 65 5f 63 |tree.tem|p_tree_c|
|00005fb0| 6f 6e 73 20 28 70 75 72 | 70 6f 73 65 2c 20 76 61 |ons (pur|pose, va|
|00005fc0| 6c 75 65 2c 20 63 68 61 | 69 6e 29 0d 20 20 20 20 |lue, cha|in). |
|00005fd0| 20 74 72 65 65 20 70 75 | 72 70 6f 73 65 2c 20 76 | tree pu|rpose, v|
|00005fe0| 61 6c 75 65 2c 20 63 68 | 61 69 6e 3b 0d 7b 0d 20 |alue, ch|ain;.{. |
|00005ff0| 20 72 65 67 69 73 74 65 | 72 20 74 72 65 65 20 6e | registe|r tree n|
|00006000| 6f 64 65 3b 0d 20 20 72 | 65 67 69 73 74 65 72 20 |ode;. r|egister |
|00006010| 73 74 72 75 63 74 20 6f | 62 73 74 61 63 6b 20 2a |struct o|bstack *|
|00006020| 61 6d 62 69 65 6e 74 5f | 6f 62 73 74 61 63 6b 20 |ambient_|obstack |
|00006030| 3d 20 63 75 72 72 65 6e | 74 5f 6f 62 73 74 61 63 |= curren|t_obstac|
|00006040| 6b 3b 0d 20 20 63 75 72 | 72 65 6e 74 5f 6f 62 73 |k;. cur|rent_obs|
|00006050| 74 61 63 6b 20 3d 20 26 | 74 65 6d 70 6f 72 61 72 |tack = &|temporar|
|00006060| 79 5f 6f 62 73 74 61 63 | 6b 3b 0d 0d 20 20 6e 6f |y_obstac|k;.. no|
|00006070| 64 65 20 3d 20 6d 61 6b | 65 5f 6e 6f 64 65 20 28 |de = mak|e_node (|
|00006080| 54 52 45 45 5f 4c 49 53 | 54 29 3b 0d 20 20 54 52 |TREE_LIS|T);. TR|
|00006090| 45 45 5f 43 48 41 49 4e | 20 28 6e 6f 64 65 29 20 |EE_CHAIN| (node) |
|000060a0| 3d 20 63 68 61 69 6e 3b | 0d 20 20 54 52 45 45 5f |= chain;|. TREE_|
|000060b0| 50 55 52 50 4f 53 45 20 | 28 6e 6f 64 65 29 20 3d |PURPOSE |(node) =|
|000060c0| 20 70 75 72 70 6f 73 65 | 3b 0d 20 20 54 52 45 45 | purpose|;. TREE|
|000060d0| 5f 56 41 4c 55 45 20 28 | 6e 6f 64 65 29 20 3d 20 |_VALUE (|node) = |
|000060e0| 76 61 6c 75 65 3b 0d 0d | 20 20 63 75 72 72 65 6e |value;..| curren|
|000060f0| 74 5f 6f 62 73 74 61 63 | 6b 20 3d 20 61 6d 62 69 |t_obstac|k = ambi|
|00006100| 65 6e 74 5f 6f 62 73 74 | 61 63 6b 3b 0d 20 20 72 |ent_obst|ack;. r|
|00006110| 65 74 75 72 6e 20 6e 6f | 64 65 3b 0d 7d 0d 0d 2f |eturn no|de;.}../|
|00006120| 2a 20 53 61 6d 65 20 61 | 73 20 60 74 72 65 65 5f |* Same a|s `tree_|
|00006130| 63 6f 6e 73 27 2c 20 62 | 75 74 20 73 61 76 65 20 |cons', b|ut save |
|00006140| 74 68 69 73 20 6e 6f 64 | 65 20 69 66 20 74 68 65 |this nod|e if the|
|00006150| 20 66 75 6e 63 74 69 6f | 6e 27 73 20 52 54 4c 20 | functio|n's RTL |
|00006160| 69 73 20 73 61 76 65 64 | 2e 20 20 2a 2f 0d 0d 74 |is saved|. */..t|
|00006170| 72 65 65 0d 73 61 76 65 | 61 62 6c 65 5f 74 72 65 |ree.save|able_tre|
|00006180| 65 5f 63 6f 6e 73 20 28 | 70 75 72 70 6f 73 65 2c |e_cons (|purpose,|
|00006190| 20 76 61 6c 75 65 2c 20 | 63 68 61 69 6e 29 0d 20 | value, |chain). |
|000061a0| 20 20 20 20 74 72 65 65 | 20 70 75 72 70 6f 73 65 | tree| purpose|
|000061b0| 2c 20 76 61 6c 75 65 2c | 20 63 68 61 69 6e 3b 0d |, value,| chain;.|
|000061c0| 7b 0d 20 20 72 65 67 69 | 73 74 65 72 20 74 72 65 |{. regi|ster tre|
|000061d0| 65 20 6e 6f 64 65 3b 0d | 20 20 72 65 67 69 73 74 |e node;.| regist|
|000061e0| 65 72 20 73 74 72 75 63 | 74 20 6f 62 73 74 61 63 |er struc|t obstac|
|000061f0| 6b 20 2a 61 6d 62 69 65 | 6e 74 5f 6f 62 73 74 61 |k *ambie|nt_obsta|
|00006200| 63 6b 20 3d 20 63 75 72 | 72 65 6e 74 5f 6f 62 73 |ck = cur|rent_obs|
|00006210| 74 61 63 6b 3b 0d 20 20 | 63 75 72 72 65 6e 74 5f |tack;. |current_|
|00006220| 6f 62 73 74 61 63 6b 20 | 3d 20 73 61 76 65 61 62 |obstack |= saveab|
|00006230| 6c 65 5f 6f 62 73 74 61 | 63 6b 3b 0d 0d 20 20 6e |le_obsta|ck;.. n|
|00006240| 6f 64 65 20 3d 20 6d 61 | 6b 65 5f 6e 6f 64 65 20 |ode = ma|ke_node |
|00006250| 28 54 52 45 45 5f 4c 49 | 53 54 29 3b 0d 20 20 54 |(TREE_LI|ST);. T|
|00006260| 52 45 45 5f 43 48 41 49 | 4e 20 28 6e 6f 64 65 29 |REE_CHAI|N (node)|
|00006270| 20 3d 20 63 68 61 69 6e | 3b 0d 20 20 54 52 45 45 | = chain|;. TREE|
|00006280| 5f 50 55 52 50 4f 53 45 | 20 28 6e 6f 64 65 29 20 |_PURPOSE| (node) |
|00006290| 3d 20 70 75 72 70 6f 73 | 65 3b 0d 20 20 54 52 45 |= purpos|e;. TRE|
|000062a0| 45 5f 56 41 4c 55 45 20 | 28 6e 6f 64 65 29 20 3d |E_VALUE |(node) =|
|000062b0| 20 76 61 6c 75 65 3b 0d | 0d 20 20 63 75 72 72 65 | value;.|. curre|
|000062c0| 6e 74 5f 6f 62 73 74 61 | 63 6b 20 3d 20 61 6d 62 |nt_obsta|ck = amb|
|000062d0| 69 65 6e 74 5f 6f 62 73 | 74 61 63 6b 3b 0d 20 20 |ient_obs|tack;. |
|000062e0| 72 65 74 75 72 6e 20 6e | 6f 64 65 3b 0d 7d 0d 0d |return n|ode;.}..|
|000062f0| 2f 2a 20 52 65 74 75 72 | 6e 20 74 68 65 20 6c 61 |/* Retur|n the la|
|00006300| 73 74 20 6e 6f 64 65 20 | 69 6e 20 61 20 63 68 61 |st node |in a cha|
|00006310| 69 6e 20 6f 66 20 6e 6f | 64 65 73 20 28 63 68 61 |in of no|des (cha|
|00006320| 69 6e 65 64 20 74 68 72 | 6f 75 67 68 20 54 52 45 |ined thr|ough TRE|
|00006330| 45 5f 43 48 41 49 4e 29 | 2e 20 20 2a 2f 0d 0d 74 |E_CHAIN)|. */..t|
|00006340| 72 65 65 0d 74 72 65 65 | 5f 6c 61 73 74 20 28 63 |ree.tree|_last (c|
|00006350| 68 61 69 6e 29 0d 20 20 | 20 20 20 72 65 67 69 73 |hain). | regis|
|00006360| 74 65 72 20 74 72 65 65 | 20 63 68 61 69 6e 3b 0d |ter tree| chain;.|
|00006370| 7b 0d 20 20 72 65 67 69 | 73 74 65 72 20 74 72 65 |{. regi|ster tre|
|00006380| 65 20 6e 65 78 74 3b 0d | 20 20 69 66 20 28 63 68 |e next;.| if (ch|
|00006390| 61 69 6e 29 0d 20 20 20 | 20 77 68 69 6c 65 20 28 |ain). | while (|
|000063a0| 6e 65 78 74 20 3d 20 54 | 52 45 45 5f 43 48 41 49 |next = T|REE_CHAI|
|000063b0| 4e 20 28 63 68 61 69 6e | 29 29 0d 20 20 20 20 20 |N (chain|)). |
|000063c0| 20 63 68 61 69 6e 20 3d | 20 6e 65 78 74 3b 0d 20 | chain =| next;. |
|000063d0| 20 72 65 74 75 72 6e 20 | 63 68 61 69 6e 3b 0d 7d | return |chain;.}|
|000063e0| 0d 0d 2f 2a 20 52 65 76 | 65 72 73 65 20 74 68 65 |../* Rev|erse the|
|000063f0| 20 6f 72 64 65 72 20 6f | 66 20 65 6c 65 6d 65 6e | order o|f elemen|
+--------+-------------------------+-------------------------+--------+--------+
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