-/* $Id: macro.c,v 1.1 2008/12/12 10:11:10 kristaps Exp $ */
+/* $Id: macro.c,v 1.40 2009/01/17 16:15:27 kristaps Exp $ */
/*
* Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
*
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
+#include <assert.h>
+#include <ctype.h>
#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#ifdef __linux__
+#include <time.h>
+#endif
+
+#include "private.h"
+
+/* FIXME: maxlineargs should be per LINE, no per TOKEN. */
+
+static int rewind_alt(int);
+static int rewind_dohalt(int, enum mdoc_type,
+ const struct mdoc_node *);
+#define REWIND_REWIND (1 << 0)
+#define REWIND_NOHALT (1 << 1)
+#define REWIND_HALT (1 << 2)
+static int rewind_dobreak(int, enum mdoc_type,
+ const struct mdoc_node *);
+
+
+static int rewind_elem(struct mdoc *, int);
+static int rewind_impblock(struct mdoc *, int, int, int);
+static int rewind_expblock(struct mdoc *, int, int, int);
+static int rewind_subblock(enum mdoc_type, struct mdoc *, int);
+static int rewind_last(int, int,
+ struct mdoc *, struct mdoc_node *);
+static int append_delims(struct mdoc *,
+ int, int, int *, char *);
+static int lookup(struct mdoc *, int, int, int, const char *);
-#include "roff.h"
static int
-macro_args_next(struct rofftree *tree, int *pos, char *buf, char **v)
+lookup(struct mdoc *mdoc, int line, int pos, int from, const char *p)
{
- int i;
+ int res;
+
+ res = mdoc_find(mdoc, p);
+ if (MDOC_PARSED & mdoc_macros[from].flags)
+ return(res);
+ if (MDOC_MAX == res)
+ return(res);
+
+ if ( ! mdoc_pwarn(mdoc, line, pos, WARN_SYNTAX, "macro-like parameter"))
+ return(-1);
+ return(MDOC_MAX);
+}
+
+
+static int
+rewind_last(int tok, int type, struct mdoc *mdoc, struct mdoc_node *to)
+{
+
+ assert(to);
+ mdoc->next = MDOC_NEXT_SIBLING;
+ if (mdoc->last == to) {
+ if ( ! mdoc_valid_post(mdoc))
+ return(0);
+ if ( ! mdoc_action_post(mdoc))
+ return(0);
+ mdoc_msg(mdoc, "rewound %s %s to %s %s",
+ mdoc_type2a(type),
+ mdoc_macronames[tok],
+ mdoc_type2a(mdoc->last->type),
+ mdoc_macronames[mdoc->last->tok]);
+ return(1);
+ }
+
+ do {
+ mdoc->last = mdoc->last->parent;
+ assert(mdoc->last);
+ if ( ! mdoc_valid_post(mdoc))
+ return(0);
+ if ( ! mdoc_action_post(mdoc))
+ return(0);
+ mdoc_msg(mdoc, "rewound %s %s to %s %s",
+ mdoc_type2a(type),
+ mdoc_macronames[tok],
+ mdoc_type2a(mdoc->last->type),
+ mdoc_macronames[mdoc->last->tok]);
+ } while (mdoc->last != to);
+
+ return(1);
+}
+
+
+static int
+rewind_alt(int tok)
+{
+ switch (tok) {
+ case (MDOC_Ac):
+ return(MDOC_Ao);
+ case (MDOC_Bc):
+ return(MDOC_Bo);
+ case (MDOC_Dc):
+ return(MDOC_Do);
+ case (MDOC_Ec):
+ return(MDOC_Eo);
+ case (MDOC_Ed):
+ return(MDOC_Bd);
+ case (MDOC_Ef):
+ return(MDOC_Bf);
+ case (MDOC_Ek):
+ return(MDOC_Bk);
+ case (MDOC_El):
+ return(MDOC_Bl);
+ case (MDOC_Fc):
+ return(MDOC_Fo);
+ case (MDOC_Oc):
+ return(MDOC_Oo);
+ case (MDOC_Pc):
+ return(MDOC_Po);
+ case (MDOC_Qc):
+ return(MDOC_Qo);
+ case (MDOC_Re):
+ return(MDOC_Rs);
+ case (MDOC_Sc):
+ return(MDOC_So);
+ case (MDOC_Xc):
+ return(MDOC_Xo);
+ default:
+ break;
+ }
+ abort();
+ /* NOTREACHED */
+}
+
+
+static int
+rewind_dohalt(int tok, enum mdoc_type type, const struct mdoc_node *p)
+{
+
+ if (MDOC_ROOT == p->type)
+ return(REWIND_HALT);
+ if (MDOC_TEXT == p->type)
+ return(REWIND_NOHALT);
+ if (MDOC_ELEM == p->type)
+ return(REWIND_NOHALT);
+
+ switch (tok) {
+ /* One-liner implicit-scope. */
+ case (MDOC_Aq):
+ /* FALLTHROUGH */
+ case (MDOC_Bq):
+ /* FALLTHROUGH */
+ case (MDOC_D1):
+ /* FALLTHROUGH */
+ case (MDOC_Dl):
+ /* FALLTHROUGH */
+ case (MDOC_Dq):
+ /* FALLTHROUGH */
+ case (MDOC_Op):
+ /* FALLTHROUGH */
+ case (MDOC_Pq):
+ /* FALLTHROUGH */
+ case (MDOC_Ql):
+ /* FALLTHROUGH */
+ case (MDOC_Qq):
+ /* FALLTHROUGH */
+ case (MDOC_Sq):
+ assert(MDOC_BODY != type);
+ assert(MDOC_TAIL != type);
+ if (type == p->type && tok == p->tok)
+ return(REWIND_REWIND);
+ break;
+
+ /* Multi-line implicit-scope. */
+ case (MDOC_It):
+ assert(MDOC_TAIL != type);
+ if (type == p->type && tok == p->tok)
+ return(REWIND_REWIND);
+ if (MDOC_BODY == p->type && MDOC_Bl == p->tok)
+ return(REWIND_HALT);
+ break;
+ case (MDOC_Sh):
+ if (type == p->type && tok == p->tok)
+ return(REWIND_REWIND);
+ break;
+ case (MDOC_Ss):
+ assert(MDOC_TAIL != type);
+ if (type == p->type && tok == p->tok)
+ return(REWIND_REWIND);
+ if (MDOC_BODY == p->type && MDOC_Sh == p->tok)
+ return(REWIND_HALT);
+ break;
+
+ /* Multi-line explicit scope start. */
+ case (MDOC_Ao):
+ /* FALLTHROUGH */
+ case (MDOC_Bd):
+ /* FALLTHROUGH */
+ case (MDOC_Bf):
+ /* FALLTHROUGH */
+ case (MDOC_Bk):
+ /* FALLTHROUGH */
+ case (MDOC_Bl):
+ /* FALLTHROUGH */
+ case (MDOC_Bo):
+ /* FALLTHROUGH */
+ case (MDOC_Do):
+ /* FALLTHROUGH */
+ case (MDOC_Eo):
+ /* FALLTHROUGH */
+ case (MDOC_Fo):
+ /* FALLTHROUGH */
+ case (MDOC_Oo):
+ /* FALLTHROUGH */
+ case (MDOC_Po):
+ /* FALLTHROUGH */
+ case (MDOC_Qo):
+ /* FALLTHROUGH */
+ case (MDOC_Rs):
+ /* FALLTHROUGH */
+ case (MDOC_So):
+ /* FALLTHROUGH */
+ case (MDOC_Xo):
+ if (type == p->type && tok == p->tok)
+ return(REWIND_REWIND);
+ break;
+
+ /* Multi-line explicit scope close. */
+ case (MDOC_Ac):
+ /* FALLTHROUGH */
+ case (MDOC_Bc):
+ /* FALLTHROUGH */
+ case (MDOC_Dc):
+ /* FALLTHROUGH */
+ case (MDOC_Ec):
+ /* FALLTHROUGH */
+ case (MDOC_Ed):
+ /* FALLTHROUGH */
+ case (MDOC_Ek):
+ /* FALLTHROUGH */
+ case (MDOC_El):
+ /* FALLTHROUGH */
+ case (MDOC_Fc):
+ /* FALLTHROUGH */
+ case (MDOC_Ef):
+ /* FALLTHROUGH */
+ case (MDOC_Oc):
+ /* FALLTHROUGH */
+ case (MDOC_Pc):
+ /* FALLTHROUGH */
+ case (MDOC_Qc):
+ /* FALLTHROUGH */
+ case (MDOC_Re):
+ /* FALLTHROUGH */
+ case (MDOC_Sc):
+ /* FALLTHROUGH */
+ case (MDOC_Xc):
+ if (type == p->type && rewind_alt(tok) == p->tok)
+ return(REWIND_REWIND);
+ break;
+ default:
+ abort();
+ /* NOTREACHED */
+ }
+
+ return(REWIND_NOHALT);
+}
+
+
+static int
+rewind_dobreak(int tok, enum mdoc_type type, const struct mdoc_node *p)
+{
+
+ assert(MDOC_ROOT != p->type);
+ if (MDOC_ELEM == p->type)
+ return(1);
+ if (MDOC_TEXT == p->type)
+ return(1);
+
+ switch (tok) {
+ /* Implicit rules. */
+ case (MDOC_It):
+ return(MDOC_It == p->tok);
+ case (MDOC_Ss):
+ return(MDOC_Ss == p->tok);
+ case (MDOC_Sh):
+ if (MDOC_Ss == p->tok)
+ return(1);
+ return(MDOC_Sh == p->tok);
+
+ /* Extra scope rules. */
+ case (MDOC_El):
+ if (MDOC_It == p->tok)
+ return(1);
+ break;
+ default:
+ break;
+ }
+
+ if (MDOC_EXPLICIT & mdoc_macros[tok].flags)
+ return(p->tok == rewind_alt(tok));
+ else if (MDOC_BLOCK == p->type)
+ return(1);
+
+ return(tok == p->tok);
+}
+
+
+static int
+rewind_elem(struct mdoc *mdoc, int tok)
+{
+ struct mdoc_node *n;
+
+ n = mdoc->last;
+ if (MDOC_ELEM != n->type)
+ n = n->parent;
+ assert(MDOC_ELEM == n->type);
+ assert(tok == n->tok);
+
+ return(rewind_last(tok, MDOC_ELEM, mdoc, n));
+}
+
+
+static int
+rewind_subblock(enum mdoc_type type, struct mdoc *mdoc, int tok)
+{
+ struct mdoc_node *n;
+ int c;
+
+ c = rewind_dohalt(tok, type, mdoc->last);
+ if (REWIND_HALT == c)
+ return(1);
+ if (REWIND_REWIND == c)
+ return(rewind_last(tok, type, mdoc, mdoc->last));
+
+ /* LINTED */
+ for (n = mdoc->last->parent; n; n = n->parent) {
+ c = rewind_dohalt(tok, type, n);
+ if (REWIND_HALT == c)
+ return(1);
+ if (REWIND_REWIND == c)
+ break;
+ else if (rewind_dobreak(tok, type, n))
+ continue;
+ return(mdoc_nerr(mdoc, n, "body scope broken"));
+ }
+
+ assert(n);
+ return(rewind_last(tok, type, mdoc, n));
+}
+
+
+static int
+rewind_expblock(struct mdoc *mdoc, int tok, int line, int ppos)
+{
+ struct mdoc_node *n;
+ int c;
+
+ c = rewind_dohalt(tok, MDOC_BLOCK, mdoc->last);
+ if (REWIND_HALT == c)
+ return(mdoc_perr(mdoc, line, ppos, "closing macro has no context"));
+ if (REWIND_REWIND == c)
+ return(rewind_last(tok, MDOC_BLOCK, mdoc, mdoc->last));
+
+ /* LINTED */
+ for (n = mdoc->last->parent; n; n = n->parent) {
+ c = rewind_dohalt(tok, MDOC_BLOCK, n);
+ if (REWIND_HALT == c)
+ return(mdoc_perr(mdoc, line, ppos, "closing macro has no context"));
+ if (REWIND_REWIND == c)
+ break;
+ else if (rewind_dobreak(tok, MDOC_BLOCK, n))
+ continue;
+ return(mdoc_nerr(mdoc, n, "block scope broken"));
+ }
+
+ assert(n);
+ return(rewind_last(tok, MDOC_BLOCK, mdoc, n));
+}
+
+
+static int
+rewind_impblock(struct mdoc *mdoc, int tok, int line, int ppos)
+{
+ struct mdoc_node *n;
+ int c;
+
+ c = rewind_dohalt(tok, MDOC_BLOCK, mdoc->last);
+ if (REWIND_HALT == c)
+ return(1);
+ if (REWIND_REWIND == c)
+ return(rewind_last(tok, MDOC_BLOCK, mdoc, mdoc->last));
+
+ /* LINTED */
+ for (n = mdoc->last->parent; n; n = n->parent) {
+ c = rewind_dohalt(tok, MDOC_BLOCK, n);
+ if (REWIND_HALT == c)
+ return(1);
+ else if (REWIND_REWIND == c)
+ break;
+ else if (rewind_dobreak(tok, MDOC_BLOCK, n))
+ continue;
+ return(mdoc_nerr(mdoc, n, "block scope broken"));
+ }
+
+ assert(n);
+ return(rewind_last(tok, MDOC_BLOCK, mdoc, n));
+}
+
+
+static int
+append_delims(struct mdoc *mdoc, int tok,
+ int line, int *pos, char *buf)
+{
+ int c, lastarg;
+ char *p;
if (0 == buf[*pos])
+ return(1);
+
+ for (;;) {
+ lastarg = *pos;
+ c = mdoc_args(mdoc, line, pos, buf, 0, &p);
+ if (ARGS_ERROR == c)
+ return(0);
+ else if (ARGS_EOLN == c)
+ break;
+ assert(mdoc_isdelim(p));
+ if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
+ return(0);
+ mdoc->next = MDOC_NEXT_SIBLING;
+ }
+
+ return(1);
+}
+
+
+/* ARGSUSED */
+int
+macro_scoped_close(MACRO_PROT_ARGS)
+{
+ int tt, j, c, lastarg, maxargs, flushed;
+ char *p;
+
+ switch (tok) {
+ case (MDOC_Ec):
+ maxargs = 1;
+ break;
+ default:
+ maxargs = 0;
+ break;
+ }
+
+ tt = rewind_alt(tok);
+
+ mdoc_msg(mdoc, "parse-quiet: %s closing %s",
+ mdoc_macronames[tok], mdoc_macronames[tt]);
+
+ if ( ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) {
+ if (0 == buf[*pos]) {
+ if ( ! rewind_subblock(MDOC_BODY, mdoc, tok))
+ return(0);
+ return(rewind_expblock(mdoc, tok, line, ppos));
+ }
+ return(mdoc_perr(mdoc, line, ppos, "macro expects no parameters"));
+ }
+
+ if ( ! rewind_subblock(MDOC_BODY, mdoc, tok))
return(0);
- if ('\"' == buf[*pos]) {
- /* Syntax error: quotation marks not allowed. */
- return(-1);
+ lastarg = ppos;
+ flushed = 0;
+
+ if (maxargs > 0) {
+ if ( ! mdoc_tail_alloc(mdoc, line, ppos, tt))
+ return(0);
+ mdoc->next = MDOC_NEXT_CHILD;
}
- *v = &buf[*pos];
+ for (j = 0; j < MDOC_LINEARG_MAX; j++) {
+ lastarg = *pos;
- while (buf[*pos] && ! isspace(buf[*pos]))
- (*pos)++;
+ if (j == maxargs && ! flushed) {
+ if ( ! rewind_expblock(mdoc, tok, line, ppos))
+ return(0);
+ flushed = 1;
+ }
- if (buf[*pos + 1] && '\\' == buf[*pos]) {
- /* Syntax error: escaped whitespace not allowed. */
- return(-1);
+ c = mdoc_args(mdoc, line, pos, buf, ARGS_DELIM, &p);
+ if (ARGS_ERROR == c)
+ return(0);
+ if (ARGS_PUNCT == c)
+ break;
+ if (ARGS_EOLN == c)
+ break;
+
+ if (-1 == (c = lookup(mdoc, line, lastarg, tok, p)))
+ return(0);
+ else if (MDOC_MAX != c) {
+ if ( ! flushed) {
+ if ( ! rewind_expblock(mdoc, tok, line, ppos))
+ return(0);
+ flushed = 1;
+ }
+ if ( ! mdoc_macro(mdoc, c, line, lastarg, pos, buf))
+ return(0);
+ break;
+ }
+
+ if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
+ return(0);
+ mdoc->next = MDOC_NEXT_SIBLING;
+ }
+
+ if (MDOC_LINEARG_MAX == j)
+ return(mdoc_perr(mdoc, line, ppos, "too many arguments"));
+
+ if ( ! flushed && ! rewind_expblock(mdoc, tok, line, ppos))
+ return(0);
+
+ if (ppos > 1)
+ return(1);
+ return(append_delims(mdoc, tok, line, pos, buf));
+}
+
+
+/*
+ * A general text domain macro. When invoked, this opens a scope that
+ * accepts words until either end-of-line, only-punctuation, or a
+ * callable macro. If the word is punctuation (not only-punctuation),
+ * then the scope is closed out, the punctuation appended, then the
+ * scope opened again. If any terminating conditions are met, the scope
+ * is closed out. If this is the first macro in the line and
+ * only-punctuation remains, this punctuation is flushed.
+ */
+int
+macro_text(MACRO_PROT_ARGS)
+{
+ int la, lastpunct, c, sz, fl, argc;
+ struct mdoc_arg argv[MDOC_LINEARG_MAX];
+ char *p;
+
+ la = ppos;
+ lastpunct = 0;
+
+ for (argc = 0; argc < MDOC_LINEARG_MAX; argc++) {
+ la = *pos;
+
+ c = mdoc_argv(mdoc, line, tok, &argv[argc], pos, buf);
+ if (ARGV_EOLN == c)
+ break;
+ if (ARGV_WORD == c) {
+ *pos = la;
+ break;
+ } else if (ARGV_ARG == c)
+ continue;
+
+ mdoc_argv_free(argc, argv);
+ return(0);
+ }
+
+ if (MDOC_LINEARG_MAX == argc) {
+ mdoc_argv_free(argc, argv);
+ return(mdoc_perr(mdoc, line, ppos, "too many arguments"));
+ }
+
+ c = mdoc_elem_alloc(mdoc, line, ppos, tok, argc, argv);
+
+ if (0 == c) {
+ mdoc_argv_free(argc, argv);
+ return(0);
+ }
+
+ mdoc->next = MDOC_NEXT_CHILD;
+
+ fl = ARGS_DELIM;
+ if (MDOC_QUOTABLE & mdoc_macros[tok].flags)
+ fl |= ARGS_QUOTED;
+
+ for (lastpunct = sz = 0; sz + argc < MDOC_LINEARG_MAX; sz++) {
+ la = *pos;
+
+ c = mdoc_args(mdoc, line, pos, buf, fl, &p);
+ if (ARGS_ERROR == c) {
+ mdoc_argv_free(argc, argv);
+ return(0);
+ }
+
+ if (ARGS_EOLN == c)
+ break;
+ if (ARGS_PUNCT == c)
+ break;
+
+ if (-1 == (c = lookup(mdoc, line, la, tok, p)))
+ return(0);
+ else if (MDOC_MAX != c) {
+ if (0 == lastpunct && ! rewind_elem(mdoc, tok)) {
+ mdoc_argv_free(argc, argv);
+ return(0);
+ }
+ mdoc_argv_free(argc, argv);
+
+ c = mdoc_macro(mdoc, c, line, la, pos, buf);
+ if (0 == c)
+ return(0);
+ if (ppos > 1)
+ return(1);
+ return(append_delims(mdoc, tok, line, pos, buf));
+ }
+
+ if (mdoc_isdelim(p)) {
+ if (0 == lastpunct && ! rewind_elem(mdoc, tok)) {
+ mdoc_argv_free(argc, argv);
+ return(0);
+ }
+ lastpunct = 1;
+ } else if (lastpunct) {
+ c = mdoc_elem_alloc(mdoc, line,
+ ppos, tok, argc, argv);
+ if (0 == c) {
+ mdoc_argv_free(argc, argv);
+ return(0);
+ }
+ mdoc->next = MDOC_NEXT_CHILD;
+ lastpunct = 0;
+ }
+
+ if ( ! mdoc_word_alloc(mdoc, line, la, p))
+ return(0);
+ mdoc->next = MDOC_NEXT_SIBLING;
}
- buf[i] = 0;
+ mdoc_argv_free(argc, argv);
+
+ if (sz == MDOC_LINEARG_MAX)
+ return(mdoc_perr(mdoc, line, ppos, "too many arguments"));
+
+ if (0 == lastpunct && ! rewind_elem(mdoc, tok))
+ return(0);
+ if (ppos > 1)
+ return(1);
+ return(append_delims(mdoc, tok, line, pos, buf));
+}
+
+
+/*
+ * Implicit- or explicit-end multi-line scoped macro.
+ */
+int
+macro_scoped(MACRO_PROT_ARGS)
+{
+ int c, lastarg, argc, j, fl;
+ struct mdoc_arg argv[MDOC_LINEARG_MAX];
+ char *p;
+
+ assert ( ! (MDOC_CALLABLE & mdoc_macros[tok].flags));
+
+ if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) {
+ if ( ! rewind_subblock(MDOC_BODY, mdoc, tok))
+ return(0);
+ if ( ! rewind_impblock(mdoc, tok, line, ppos))
+ return(0);
+ }
+
+ for (argc = 0; argc < MDOC_LINEARG_MAX; argc++) {
+ lastarg = *pos;
+ c = mdoc_argv(mdoc, line, tok, &argv[argc], pos, buf);
+ if (ARGV_EOLN == c)
+ break;
+ if (ARGV_WORD == c) {
+ *pos = lastarg;
+ break;
+ } else if (ARGV_ARG == c)
+ continue;
+ mdoc_argv_free(argc, argv);
+ return(0);
+ }
+
+ if (MDOC_LINEARG_MAX == argc) {
+ mdoc_argv_free(argc, argv);
+ return(mdoc_perr(mdoc, line, ppos, "too many arguments"));
+ }
+
+ c = mdoc_block_alloc(mdoc, line, ppos,
+ tok, (size_t)argc, argv);
+ mdoc_argv_free(argc, argv);
+
+ if (0 == c)
+ return(0);
+
+ mdoc->next = MDOC_NEXT_CHILD;
+
+ if (0 == buf[*pos]) {
+ if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
+ return(0);
+ if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok))
+ return(0);
+ if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
+ return(0);
+ mdoc->next = MDOC_NEXT_CHILD;
+ return(1);
+ }
+
+ if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
+ return(0);
+ mdoc->next = MDOC_NEXT_CHILD;
+
+ fl = ARGS_DELIM;
+ if (MDOC_TABSEP & mdoc_macros[tok].flags)
+ fl |= ARGS_TABSEP;
+
+ for (j = 0; j < MDOC_LINEARG_MAX; j++) {
+ lastarg = *pos;
+ c = mdoc_args(mdoc, line, pos, buf, fl, &p);
+
+ if (ARGS_ERROR == c)
+ return(0);
+ if (ARGS_PUNCT == c)
+ break;
+ if (ARGS_EOLN == c)
+ break;
+
+ if (-1 == (c = lookup(mdoc, line, lastarg, tok, p)))
+ return(0);
+ else if (MDOC_MAX == c) {
+ if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
+ return(0);
+ mdoc->next = MDOC_NEXT_SIBLING;
+ continue;
+ }
+
+ if ( ! mdoc_macro(mdoc, c, line, lastarg, pos, buf))
+ return(0);
+ break;
+ }
+
+ if (j == MDOC_LINEARG_MAX)
+ return(mdoc_perr(mdoc, line, ppos, "too many arguments"));
+
+ if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok))
+ return(0);
+ if (1 == ppos && ! append_delims(mdoc, tok, line, pos, buf))
+ return(0);
+
+ if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
+ return(0);
+ mdoc->next = MDOC_NEXT_CHILD;
+
return(1);
}
+
/*
- * Parses the following:
- *
- * .Xx foo bar baz ; foo "bar baz" ; ;
- * ^---------- ^----------
+ * When scoped to a line, a macro encompasses all of the contents. This
+ * differs from constants or text macros, where a new macro will
+ * terminate the existing context.
*/
-static int
-macro_fl(struct rofftree *tree, int tok, int *pos, char *buf)
+int
+macro_scoped_line(MACRO_PROT_ARGS)
{
- int i, j, c, first;
- char *args[ROFF_MAXLINEARG];
+ int lastarg, c, j;
+ char *p;
+
+ if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, 0, NULL))
+ return(0);
+ mdoc->next = MDOC_NEXT_CHILD;
- first = *pos == 0;
+ if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
+ return(0);
+ mdoc->next = MDOC_NEXT_CHILD;
+
+ /* XXX - no known argument macros. */
+
+ for (lastarg = ppos, j = 0; j < MDOC_LINEARG_MAX; j++) {
+ lastarg = *pos;
+ c = mdoc_args(mdoc, line, pos, buf, ARGS_DELIM, &p);
- for (j = 0; ; ) {
- i = *pos;
- c = macro_args_next(tree, *i, buf, args[j]);
- if (-1 == c)
+ if (ARGS_ERROR == c)
return(0);
- if (0 == c)
+ if (ARGS_PUNCT == c)
break;
+ if (ARGS_EOLN == c)
+ break;
+
+ if (-1 == (c = lookup(mdoc, line, lastarg, tok, p)))
+ return(0);
+ else if (MDOC_MAX == c) {
+ if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
+ return(0);
+ mdoc->next = MDOC_NEXT_SIBLING;
+ continue;
+ }
+
+ if ( ! mdoc_macro(mdoc, c, line, lastarg, pos, buf))
+ return(0);
+ break;
+ }
- /* Break at the next command. */
+ if (j == MDOC_LINEARG_MAX)
+ return(mdoc_perr(mdoc, line, ppos, "too many arguments"));
- if (ROFF_MAX != (c = rofffindcallable(args[pos]))) {
- if ( ! macro(tree, tok, argc, argv, i, p))
+ if (1 == ppos) {
+ if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok))
+ return(0);
+ if ( ! append_delims(mdoc, tok, line, pos, buf))
+ return(0);
+ } else if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok))
+ return(0);
+ return(rewind_impblock(mdoc, tok, line, ppos));
+}
+
+
+/*
+ * Constant-scope macros accept a fixed number of arguments and behave
+ * like constant macros except that they're scoped across lines.
+ */
+int
+macro_constant_scoped(MACRO_PROT_ARGS)
+{
+ int lastarg, flushed, j, c, maxargs;
+ char *p;
+
+ lastarg = ppos;
+ flushed = 0;
+
+ switch (tok) {
+ case (MDOC_Eo):
+ maxargs = 1;
+ break;
+ default:
+ maxargs = 0;
+ break;
+ }
+
+ if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, 0, NULL))
+ return(0);
+ mdoc->next = MDOC_NEXT_CHILD;
+
+ if (0 == maxargs) {
+ if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
+ return(0);
+ if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok))
+ return(0);
+ if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
+ return(0);
+ flushed = 1;
+ } else if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
+ return(0);
+
+ mdoc->next = MDOC_NEXT_CHILD;
+
+ for (j = 0; j < MDOC_LINEARG_MAX; j++) {
+ lastarg = *pos;
+
+ if (j == maxargs && ! flushed) {
+ if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok))
return(0);
- if ( ! parse(tree, c, pos, args))
+ flushed = 1;
+ if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
return(0);
+ mdoc->next = MDOC_NEXT_CHILD;
+ }
+
+ c = mdoc_args(mdoc, line, pos, buf, ARGS_DELIM, &p);
+ if (ARGS_ERROR == c)
+ return(0);
+ if (ARGS_PUNCT == c)
+ break;
+ if (ARGS_EOLN == c)
break;
+
+ if (-1 == (c = lookup(mdoc, line, lastarg, tok, p)))
+ return(0);
+ else if (MDOC_MAX != c) {
+ if ( ! flushed) {
+ if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok))
+ return(0);
+ flushed = 1;
+ if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
+ return(0);
+ mdoc->next = MDOC_NEXT_CHILD;
+ }
+ if ( ! mdoc_macro(mdoc, c, line, lastarg, pos, buf))
+ return(0);
+ break;
+ }
+
+ if ( ! flushed && mdoc_isdelim(p)) {
+ if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok))
+ return(0);
+ flushed = 1;
+ if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
+ return(0);
+ mdoc->next = MDOC_NEXT_CHILD;
}
+
+ if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
+ return(0);
+ mdoc->next = MDOC_NEXT_SIBLING;
+ }
+
+ if (MDOC_LINEARG_MAX == j)
+ return(mdoc_perr(mdoc, line, ppos, "too many arguments"));
+
+ if ( ! flushed) {
+ if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok))
+ return(0);
+ if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
+ return(0);
+ mdoc->next = MDOC_NEXT_CHILD;
+ }
+
+ if (ppos > 1)
+ return(1);
+ return(append_delims(mdoc, tok, line, pos, buf));
+}
+
+
+/*
+ * Delimited macros are like text macros except that, should punctuation
+ * be encountered, the macro isn't re-started with remaining tokens
+ * (it's only emitted once). Delimited macros can have a maximum number
+ * of arguments.
+ */
+int
+macro_constant_delimited(MACRO_PROT_ARGS)
+{
+ int lastarg, flushed, j, c, maxargs, argc;
+ struct mdoc_arg argv[MDOC_LINEARG_MAX];
+ char *p;
- /* Continue if we're just words. */
+ lastarg = ppos;
+ flushed = 0;
- if ( ! roffispunct(args[pos])) {
- i++;
+ switch (tok) {
+ case (MDOC_No):
+ /* FALLTHROUGH */
+ case (MDOC_Ns):
+ /* FALLTHROUGH */
+ case (MDOC_Pf):
+ /* FALLTHROUGH */
+ case (MDOC_Ux):
+ /* FALLTHROUGH */
+ case (MDOC_St):
+ maxargs = 0;
+ break;
+ default:
+ maxargs = 1;
+ break;
+ }
+
+ for (argc = 0; argc < MDOC_LINEARG_MAX; argc++) {
+ lastarg = *pos;
+ c = mdoc_argv(mdoc, line, tok, &argv[argc], pos, buf);
+ if (ARGV_EOLN == c)
+ break;
+ if (ARGV_WORD == c) {
+ *pos = lastarg;
+ break;
+ } else if (ARGV_ARG == c)
continue;
+ mdoc_argv_free(argc, argv);
+ return(0);
+ }
+
+ c = mdoc_elem_alloc(mdoc, line, ppos, tok, argc, argv);
+ mdoc_argv_free(argc, argv);
+
+ if (0 == c)
+ return(0);
+
+ mdoc->next = MDOC_NEXT_CHILD;
+
+ for (j = 0; j < MDOC_LINEARG_MAX; j++) {
+ lastarg = *pos;
+
+ if (j == maxargs && ! flushed) {
+ if ( ! rewind_elem(mdoc, tok))
+ return(0);
+ flushed = 1;
+ }
+
+ c = mdoc_args(mdoc, line, pos, buf, ARGS_DELIM, &p);
+ if (ARGS_ERROR == c)
+ return(0);
+ if (ARGS_PUNCT == c)
+ break;
+ if (ARGS_EOLN == c)
+ break;
+
+ if (-1 == (c = lookup(mdoc, line, lastarg, tok, p)))
+ return(0);
+ else if (MDOC_MAX != c) {
+ if ( ! flushed && ! rewind_elem(mdoc, tok))
+ return(0);
+ flushed = 1;
+ if ( ! mdoc_macro(mdoc, c, line, lastarg, pos, buf))
+ return(0);
+ break;
}
- /* Break if there's only remaining punctuation. */
+ if ( ! flushed && mdoc_isdelim(p)) {
+ if ( ! rewind_elem(mdoc, tok))
+ return(0);
+ flushed = 1;
+ }
+
+ if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
+ return(0);
+ mdoc->next = MDOC_NEXT_SIBLING;
+ }
+
+ if (MDOC_LINEARG_MAX == j)
+ return(mdoc_perr(mdoc, line, ppos, "too many arguments"));
+
+ if ( ! flushed && rewind_elem(mdoc, tok))
+ return(0);
+
+ if (ppos > 1)
+ return(1);
+ return(append_delims(mdoc, tok, line, pos, buf));
+}
+
- if (args[pos + 1] && roffispunct(args[pos + 1]))
+/*
+ * Constant macros span an entire line: they constitute a macro and all
+ * of its arguments and child data.
+ */
+int
+macro_constant(MACRO_PROT_ARGS)
+{
+ int c, lastarg, argc, sz, fl;
+ struct mdoc_arg argv[MDOC_LINEARG_MAX];
+ char *p;
+
+ fl = 0;
+ if (MDOC_QUOTABLE & mdoc_macros[tok].flags)
+ fl = ARGS_QUOTED;
+
+ for (argc = 0; argc < MDOC_LINEARG_MAX; argc++) {
+ lastarg = *pos;
+ c = mdoc_argv(mdoc, line, tok, &argv[argc], pos, buf);
+ if (ARGV_EOLN == c)
+ break;
+ if (ARGV_WORD == c) {
+ *pos = lastarg;
break;
+ } else if (ARGV_ARG == c)
+ continue;
+
+ mdoc_argv_free(argc, argv);
+ return(0);
+ }
+
+ c = mdoc_elem_alloc(mdoc, line, ppos, tok, argc, argv);
+ mdoc_argv_free(argc, argv);
+
+ if (0 == c)
+ return(0);
+
+ mdoc->next = MDOC_NEXT_CHILD;
- /* If there are remaining words, start anew. */
+ if (MDOC_LINEARG_MAX == argc)
+ return(mdoc_perr(mdoc, line, ppos, "too many arguments"));
- if ( ! macro(tree, tok, argc, argv, i, p))
+ for (sz = 0; sz + argc < MDOC_LINEARG_MAX; sz++) {
+ lastarg = *pos;
+ c = mdoc_args(mdoc, line, pos, buf, fl, &p);
+ if (ARGS_ERROR == c)
return(0);
+ if (ARGS_EOLN == c)
+ break;
- /* Spit out the punctuation. */
+ if (-1 == (c = lookup(mdoc, line, lastarg, tok, p)))
+ return(0);
+ else if (MDOC_MAX != c) {
+ if ( ! rewind_elem(mdoc, tok))
+ return(0);
+ return(mdoc_macro(mdoc, c, line,
+ lastarg, pos, buf));
+ }
- if ( ! word(tree, tok, *args++))
+ if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
return(0);
- i++;
+ mdoc->next = MDOC_NEXT_SIBLING;
}
+
+ if (MDOC_LINEARG_MAX == sz + argc)
+ return(mdoc_perr(mdoc, line, ppos, "too many arguments"));
+
+ return(rewind_elem(mdoc, tok));
+}
+
+
+/* ARGSUSED */
+int
+macro_obsolete(MACRO_PROT_ARGS)
+{
+
+ return(mdoc_pwarn(mdoc, line, ppos, WARN_SYNTAX, "macro is obsolete"));
+}
+
+
+int
+macro_end(struct mdoc *mdoc)
+{
+
+ assert(mdoc->first);
+ assert(mdoc->last);
+ return(rewind_last(mdoc->last->tok, mdoc->last->type,
+ mdoc, mdoc->first));
}
git.ckatri.com / mandoc.git / blobdiff