Annotation of mandoc/macro.c, Revision 1.4
1.4 ! kristaps 1: /* $Id: macro.c,v 1.3 2008/12/15 02:23:12 kristaps Exp $ */
1.1 kristaps 2: /*
3: * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the
7: * above copyright notice and this permission notice appear in all
8: * copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
11: * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
12: * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
13: * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
14: * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
15: * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
16: * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17: * PERFORMANCE OF THIS SOFTWARE.
18: */
1.2 kristaps 19: #include <assert.h>
20: #include <ctype.h>
1.1 kristaps 21: #include <stdlib.h>
1.2 kristaps 22: #include <stdio.h>
23:
24: #include "private.h"
25:
1.3 kristaps 26: #define _CC(p) ((const char **)p)
1.2 kristaps 27:
1.3 kristaps 28: static int append_text(struct mdoc *, int,
29: int, int, char *[]);
30: static int append_scoped(struct mdoc *, int,
31: int, int, char *[]);
32: static int args_next(struct mdoc *, int,
33: int *, char *, char **);
1.1 kristaps 34:
35:
36: static int
1.2 kristaps 37: args_next(struct mdoc *mdoc, int tok,
38: int *pos, char *buf, char **v)
1.1 kristaps 39: {
40:
41: if (0 == buf[*pos])
42: return(0);
43:
1.2 kristaps 44: assert( ! isspace(buf[*pos]));
45:
1.1 kristaps 46: if ('\"' == buf[*pos]) {
1.2 kristaps 47: (void)mdoc_err(mdoc, tok, *pos, ERR_SYNTAX_QUOTE);
1.1 kristaps 48: return(-1);
49: }
50:
51: *v = &buf[*pos];
52:
1.2 kristaps 53: /* Scan ahead to end of token. */
54:
1.1 kristaps 55: while (buf[*pos] && ! isspace(buf[*pos]))
56: (*pos)++;
57:
1.2 kristaps 58: if (buf[*pos] && buf[*pos + 1] && '\\' == buf[*pos]) {
59: (void)mdoc_err(mdoc, tok, *pos, ERR_SYNTAX_WS);
1.1 kristaps 60: return(-1);
61: }
62:
1.2 kristaps 63: if (0 == buf[*pos])
64: return(1);
65:
66: /* Scan ahead over trailing whitespace. */
67:
68: buf[(*pos)++] = 0;
69: while (buf[*pos] && isspace(buf[*pos]))
70: (*pos)++;
71:
72: if (0 == buf[*pos])
73: if ( ! mdoc_warn(mdoc, tok, *pos, WARN_SYNTAX_WS_EOLN))
74: return(-1);
75:
1.1 kristaps 76: return(1);
77: }
78:
1.2 kristaps 79:
80: static int
1.3 kristaps 81: append_scoped(struct mdoc *mdoc, int tok,
82: int pos, int sz, char *args[])
1.2 kristaps 83: {
84:
1.4 ! kristaps 85: switch (tok) {
! 86: /* ======= ADD MORE MACRO CHECKS BELOW. ======= */
! 87: case (MDOC_Sh):
! 88: break;
! 89: case (MDOC_Ss):
! 90: break;
! 91: /* ======= ADD MORE MACRO CHECKS ABOVE. ======= */
! 92: default:
! 93: abort();
! 94: /* NOTREACHED */
! 95: }
! 96:
1.3 kristaps 97: assert(sz >= 0);
1.2 kristaps 98: args[sz] = NULL;
99: mdoc_block_alloc(mdoc, pos, tok, 0, NULL);
1.3 kristaps 100: mdoc_head_alloc(mdoc, pos, tok, (size_t)sz, _CC(args));
1.2 kristaps 101: mdoc_body_alloc(mdoc, pos, tok);
102: return(1);
103: }
104:
105:
1.1 kristaps 106: static int
1.3 kristaps 107: append_text(struct mdoc *mdoc, int tok,
108: int pos, int sz, char *args[])
1.1 kristaps 109: {
110:
1.3 kristaps 111: assert(sz >= 0);
1.2 kristaps 112: args[sz] = NULL;
113:
114: switch (tok) {
1.4 ! kristaps 115: /* ======= ADD MORE MACRO CHECKS BELOW. ======= */
1.2 kristaps 116: case (MDOC_Ft):
117: /* FALLTHROUGH */
118: case (MDOC_Li):
119: /* FALLTHROUGH */
120: case (MDOC_Ms):
121: /* FALLTHROUGH */
122: case (MDOC_Pa):
123: /* FALLTHROUGH */
124: case (MDOC_Tn):
1.4 ! kristaps 125: if (0 < sz)
! 126: break;
! 127: if ( ! mdoc_warn(mdoc, tok, pos, WARN_ARGS_GE1))
1.1 kristaps 128: return(0);
1.4 ! kristaps 129: break;
1.2 kristaps 130: case (MDOC_Ar):
131: /* FALLTHROUGH */
132: case (MDOC_Cm):
133: /* FALLTHROUGH */
134: case (MDOC_Fl):
1.4 ! kristaps 135: break;
1.2 kristaps 136: case (MDOC_Ad):
137: /* FALLTHROUGH */
138: case (MDOC_Em):
139: /* FALLTHROUGH */
140: case (MDOC_Er):
141: /* FALLTHROUGH */
142: case (MDOC_Ev):
143: /* FALLTHROUGH */
144: case (MDOC_Fa):
145: /* FALLTHROUGH */
146: case (MDOC_Dv):
147: /* FALLTHROUGH */
148: case (MDOC_Ic):
149: /* FALLTHROUGH */
150: case (MDOC_Va):
151: /* FALLTHROUGH */
152: case (MDOC_Vt):
1.4 ! kristaps 153: if (0 < sz)
! 154: break;
! 155: return(mdoc_err(mdoc, tok, pos, ERR_ARGS_GE1));
! 156: /* ======= ADD MORE MACRO CHECKS ABOVE. ======= */
1.2 kristaps 157: default:
1.4 ! kristaps 158: abort();
! 159: /* NOTREACHED */
1.2 kristaps 160: }
161:
1.4 ! kristaps 162: mdoc_elem_alloc(mdoc, pos, tok, 0,
! 163: NULL, (size_t)sz, _CC(args));
! 164: return(1);
1.2 kristaps 165: }
166:
1.1 kristaps 167:
1.2 kristaps 168: int
169: macro_text(struct mdoc *mdoc, int tok, int ppos, int *pos, char *buf)
170: {
1.3 kristaps 171: int lastarg, c, lasttok, lastpunct, j;
1.2 kristaps 172: char *args[MDOC_LINEARG_MAX], *p;
1.1 kristaps 173:
1.2 kristaps 174: lasttok = ppos;
175: lastpunct = 0;
176: j = 0;
177:
178: again:
179:
180: lastarg = *pos;
181: c = args_next(mdoc, tok, pos, buf, &args[j]);
182:
183: if (-1 == c)
184: return(0);
185: if (0 == c && ! lastpunct)
186: return(append_text(mdoc, tok, lasttok, j, args));
187: else if (0 == c)
188: return(1);
189:
190: /* Command found. */
191:
192: if (MDOC_MAX != (c = mdoc_find(mdoc, args[j]))) {
193: if ( ! lastpunct)
194: if ( ! append_text(mdoc, tok, lasttok, j, args))
1.1 kristaps 195: return(0);
1.2 kristaps 196: return(mdoc_macro(mdoc, c, lastarg, pos, buf));
197: }
198:
199: /* Word found. */
200:
1.4 ! kristaps 201: if ( ! mdoc_isdelim(args[j])) {
1.2 kristaps 202: j++;
203: goto again;
204: }
205:
206: /* Punctuation found. */
207:
208: p = args[j]; /* Save argument (NULL-ified in append). */
209:
210: if ( ! lastpunct)
211: if ( ! append_text(mdoc, tok, lasttok, j, args))
212: return(0);
213:
214: args[j] = p;
215:
216: mdoc_word_alloc(mdoc, lastarg, args[j]);
217: lastpunct = 1;
218: j = 0;
219:
220: goto again;
221:
222: /* NOTREACHED */
223: }
1.1 kristaps 224:
225:
1.2 kristaps 226: int
227: macro_scoped_implicit(struct mdoc *mdoc,
228: int tok, int ppos, int *pos, char *buf)
229: {
1.3 kristaps 230: int t, c, lastarg, j;
1.2 kristaps 231: char *args[MDOC_LINEARG_MAX];
232: struct mdoc_node *n;
233:
234: /*
235: * Look for an implicit parent.
236: */
1.1 kristaps 237:
1.2 kristaps 238: assert( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags));
1.1 kristaps 239:
1.3 kristaps 240: /* LINTED */
1.2 kristaps 241: for (n = mdoc->last; n; n = n->parent) {
242: if (MDOC_BLOCK != n->type)
243: continue;
244: if (tok == (t = n->data.block.tok))
1.1 kristaps 245: break;
1.2 kristaps 246: if ( ! (MDOC_EXPLICIT & mdoc_macros[t].flags))
247: continue;
248: return(mdoc_err(mdoc, tok, ppos, ERR_SCOPE_BREAK));
249: }
250:
251: if (n) {
252: mdoc->last = n;
253: mdoc_msg(mdoc, ppos, "scope: rewound `%s'",
254: mdoc_macronames[tok]);
255: } else
256: mdoc_msg(mdoc, ppos, "scope: new `%s'",
257: mdoc_macronames[tok]);
258:
259: j = 0;
260:
261: again:
262:
263: lastarg = *pos;
264: c = args_next(mdoc, tok, pos, buf, &args[j]);
265:
266: if (-1 == c)
267: return(0);
268: if (0 == c)
269: return(append_scoped(mdoc, tok, ppos, j, args));
1.1 kristaps 270:
1.2 kristaps 271: /* Command found. */
1.1 kristaps 272:
1.2 kristaps 273: if (MDOC_MAX != (c = mdoc_find(mdoc, args[j])))
1.3 kristaps 274: if ( ! mdoc_warn(mdoc, tok, lastarg, WARN_SYNTAX_MACLIKE))
1.1 kristaps 275: return(0);
276:
1.2 kristaps 277: /* Word found. */
278:
279: j++;
280: goto again;
1.1 kristaps 281:
1.2 kristaps 282: /* NOTREACHED */
1.1 kristaps 283: }
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