-/* $Id: macro.c,v 1.25 2009/01/07 15:53:00 kristaps Exp $ */
+/* $Id: macro.c,v 1.48 2009/01/20 20:56:21 kristaps Exp $ */
/*
* Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
*
#include <time.h>
#endif
-#include "private.h"
+/*
+ * This has scanning/parsing routines, each of which extract a macro and
+ * its arguments and parameters, then know how to progress to the next
+ * macro. Macros are parsed according as follows:
+ *
+ * ELEMENT: TEXT | epsilon
+ * BLOCK: HEAD PUNCT BODY PUNCT BLOCK_TAIL PUNCT
+ * BLOCK_TAIL: TAIL | epsilon
+ * HEAD: ELEMENT | TEXT | BLOCK | epsilon
+ * BODY: ELEMENT | TEXT | BLOCK | epsilon
+ * TAIL: TEXT | epsilon
+ * PUNCT: TEXT (delimiters) | epsilon
+ *
+ * These are arranged into a parse tree, an example of which follows:
+ *
+ * ROOT
+ * BLOCK (.Sh)
+ * HEAD
+ * TEXT (`NAME')
+ * BODY
+ * ELEMENT (.Nm)
+ * TEXT (`mdocml')
+ * ELEMENT (.Nd)
+ * TEXT (`mdoc macro compiler')
+ * BLOCK (.Op)
+ * HEAD
+ * ELEMENT (.Fl)
+ * TEXT (`v')
+ * BLOCK (.Op)
+ * HEAD
+ * ELEMENT (.Fl)
+ * TEXT (`v')
+ * ELEMENT (.Fl)
+ * TEXT (`W')
+ * ELEMENT (.Ns)
+ * ELEMENT (.Ar)
+ * TEXT (`err...')
+ *
+ * These types are always per-line except for block bodies, which may
+ * span multiple lines. Macros are assigned a parsing routine, which
+ * corresponds to the type, in the mdoc_macros table.
+ *
+ * Note that types are general: there can be several parsing routines
+ * corresponding to a single type. The macro_text function, for
+ * example, parses an ELEMENT type (see the function definition for
+ * details) that may be interrupted by further macros; the
+ * macro_constant function, on the other hand, parses an ELEMENT type
+ * spanning a single line.
+ */
-/* FIXME: maxlineargs should be per LINE, no per TOKEN. */
+#include "private.h"
-static int rewind_elem(struct mdoc *, int, int);
-static int rewind_impblock(struct mdoc *, int, int);
+#define REWIND_REWIND (1 << 0)
+#define REWIND_NOHALT (1 << 1)
+#define REWIND_HALT (1 << 2)
+static int rewind_dohalt(int, enum mdoc_type,
+ const struct mdoc_node *);
+static int rewind_alt(int);
+static int rewind_dobreak(int, 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_head(struct mdoc *, int, int);
-static int rewind_body(struct mdoc *, int, int, int);
-static int rewind_last(struct mdoc *, int, struct mdoc_node *);
+static int rewind_subblock(enum mdoc_type,
+ struct mdoc *, int, int, int);
+static int rewind_last(struct mdoc *, struct mdoc_node *);
static int append_delims(struct mdoc *, int, int *, char *);
-static int lookup(struct mdoc *, int, const char *);
+static int lookup(struct mdoc *, int, int, int, const char *);
static int
-lookup(struct mdoc *mdoc, int from, const char *p)
+lookup(struct mdoc *mdoc, int line, int pos, int from, const char *p)
{
-
- if ( ! (MDOC_PARSED & mdoc_macros[from].flags))
- return(MDOC_MAX);
- return(mdoc_find(mdoc, p));
+ 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(struct mdoc *mdoc, int ppos, struct mdoc_node *to)
+rewind_last(struct mdoc *mdoc, struct mdoc_node *to)
{
assert(to);
+ mdoc->next = MDOC_NEXT_SIBLING;
+
while (mdoc->last != to) {
- if ( ! mdoc_valid_post(mdoc, ppos))
+ if ( ! mdoc_valid_post(mdoc))
return(0);
- if ( ! mdoc_action(mdoc, ppos))
+ if ( ! mdoc_action_post(mdoc))
return(0);
mdoc->last = mdoc->last->parent;
assert(mdoc->last);
}
- mdoc->next = MDOC_NEXT_SIBLING;
- if ( ! mdoc_valid_post(mdoc, ppos))
+
+ if ( ! mdoc_valid_post(mdoc))
return(0);
- return(mdoc_action(mdoc, ppos));
+ return(mdoc_action_post(mdoc));
}
static int
-rewind_elem(struct mdoc *mdoc, int ppos, int tok)
+rewind_alt(int tok)
{
- struct mdoc_node *n;
+ 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 */
+}
- n = mdoc->last;
- if (MDOC_ELEM != n->type)
- n = n->parent;
- assert(MDOC_ELEM == n->type);
- assert(tok == n->data.elem.tok);
- return(rewind_last(mdoc, ppos, n));
+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_VALID & p->flags)
+ 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_HEAD != 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_body(struct mdoc *mdoc, int ppos, int tok, int tt)
+rewind_dobreak(int tok, const struct mdoc_node *p)
{
- struct mdoc_node *n;
- int t;
- /* LINTED */
- for (n = mdoc->last; n; n = n->parent) {
- if (MDOC_BODY != n->type)
- continue;
- if (tt == (t = n->data.head.tok))
- break;
- if ( ! (MDOC_EXPLICIT & mdoc_macros[t].flags))
- continue;
- return(mdoc_err(mdoc, tok, ppos, ERR_SCOPE_BREAK));
+ assert(MDOC_ROOT != p->type);
+ if (MDOC_ELEM == p->type)
+ return(1);
+ if (MDOC_TEXT == p->type)
+ return(1);
+ if (MDOC_VALID & p->flags)
+ 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;
}
- assert(n);
- return(rewind_last(mdoc, ppos, n));
+ 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(mdoc, n));
}
static int
-rewind_head(struct mdoc *mdoc, int ppos, int tok)
+rewind_subblock(enum mdoc_type type, struct mdoc *mdoc,
+ int tok, int line, int ppos)
{
struct mdoc_node *n;
- int t;
+ int c;
/* LINTED */
for (n = mdoc->last; n; n = n->parent) {
- if (MDOC_HEAD != n->type)
- continue;
- if (tok == (t = n->data.head.tok))
+ c = rewind_dohalt(tok, type, n);
+ if (REWIND_HALT == c)
+ return(1);
+ if (REWIND_REWIND == c)
break;
- if ( ! (MDOC_EXPLICIT & mdoc_macros[t].flags))
+ else if (rewind_dobreak(tok, n))
continue;
- return(mdoc_err(mdoc, tok, ppos, ERR_SCOPE_BREAK));
+ return(mdoc_perr(mdoc, line, ppos, "scope breaks prior %s", mdoc_node2a(n)));
}
assert(n);
- return(rewind_last(mdoc, ppos, n));
+ return(rewind_last(mdoc, n));
}
static int
-rewind_expblock(struct mdoc *mdoc, int ppos, int tok, int tt)
+rewind_expblock(struct mdoc *mdoc, int tok, int line, int ppos)
{
struct mdoc_node *n;
- int t;
-
- assert(mdoc->last);
+ int c;
/* LINTED */
- for (n = mdoc->last->parent; n; n = n->parent) {
- if (MDOC_BLOCK != n->type)
- continue;
- if (tt == (t = n->data.block.tok))
+ for (n = mdoc->last; 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;
- if (MDOC_NESTED & mdoc_macros[t].flags)
+ else if (rewind_dobreak(tok, n))
continue;
- return(mdoc_err(mdoc, tok, ppos, ERR_SCOPE_BREAK));
+ return(mdoc_perr(mdoc, line, ppos, "scope breaks prior %s", mdoc_node2a(n)));
}
- if (NULL == n)
- return(mdoc_err(mdoc, tok, ppos, ERR_SCOPE_NOCTX));
- return(rewind_last(mdoc, ppos, n));
+ assert(n);
+ return(rewind_last(mdoc, n));
}
static int
-rewind_impblock(struct mdoc *mdoc, int ppos, int tok)
+rewind_impblock(struct mdoc *mdoc, int tok, int line, int ppos)
{
struct mdoc_node *n;
- int t;
-
- n = mdoc->last ? mdoc->last->parent : NULL;
+ int c;
/* LINTED */
- for ( ; n; n = n->parent) {
- if (MDOC_BLOCK != n->type)
- continue;
- if (tok == (t = n->data.block.tok))
+ for (n = mdoc->last; n; n = n->parent) {
+ c = rewind_dohalt(tok, MDOC_BLOCK, n);
+ if (REWIND_HALT == c)
+ return(1);
+ else if (REWIND_REWIND == c)
break;
- if ( ! (MDOC_EXPLICIT & mdoc_macros[t].flags))
+ else if (rewind_dobreak(tok, n))
continue;
- if (MDOC_NESTED & mdoc_macros[tok].flags)
- return(1);
- return(mdoc_err(mdoc, tok, ppos, ERR_SCOPE_BREAK));
+ return(mdoc_perr(mdoc, line, ppos, "scope breaks prior %s", mdoc_node2a(n)));
}
- if (NULL == n)
- return(1);
- return(rewind_last(mdoc, ppos, n));
+ assert(n);
+ return(rewind_last(mdoc, n));
}
static int
-append_delims(struct mdoc *mdoc, int tok, int *pos, char *buf)
+append_delims(struct mdoc *mdoc, int line, int *pos, char *buf)
{
int c, lastarg;
char *p;
for (;;) {
lastarg = *pos;
- c = mdoc_args(mdoc, tok, pos, buf, 0, &p);
+ 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));
- mdoc_word_alloc(mdoc, lastarg, p);
+ if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
+ return(0);
mdoc->next = MDOC_NEXT_SIBLING;
}
}
-/* ARGSUSED */
+/*
+ * Close out an explicit scope. This optionally parses a TAIL type with
+ * a set number of TEXT children.
+ */
int
-macro_close_explicit(MACRO_PROT_ARGS)
+macro_scoped_close(MACRO_PROT_ARGS)
{
- int tt, j, c, lastarg, maxargs, flushed;
+ int tt, j, c, lastarg, maxargs, flushed;
char *p;
- switch (tok) {
- case (MDOC_Ac):
- tt = MDOC_Ao;
- break;
- case (MDOC_Bc):
- tt = MDOC_Bo;
- break;
- case (MDOC_Dc):
- tt = MDOC_Do;
- break;
- case (MDOC_Ec):
- tt = MDOC_Eo;
- break;
- case (MDOC_Ed):
- tt = MDOC_Bd;
- break;
- case (MDOC_Ef):
- tt = MDOC_Bf;
- break;
- case (MDOC_Ek):
- tt = MDOC_Bk;
- break;
- case (MDOC_El):
- tt = MDOC_Bl;
- break;
- case (MDOC_Fc):
- tt = MDOC_Fo;
- break;
- case (MDOC_Oc):
- tt = MDOC_Oo;
- break;
- case (MDOC_Pc):
- tt = MDOC_Po;
- break;
- case (MDOC_Qc):
- tt = MDOC_Qo;
- break;
- case (MDOC_Re):
- tt = MDOC_Rs;
- break;
- case (MDOC_Sc):
- tt = MDOC_So;
- break;
- case (MDOC_Xc):
- tt = MDOC_Xo;
- break;
- default:
- abort();
- /* NOTREACHED */
- }
-
switch (tok) {
case (MDOC_Ec):
maxargs = 1;
break;
}
+ tt = rewind_alt(tok);
+
+ mdoc_msg(mdoc, "parse: %s closing %s",
+ mdoc_macronames[tok], mdoc_macronames[tt]);
+
if ( ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) {
- if ( ! rewind_expblock(mdoc, ppos, tok, tt))
- return(0);
- if (0 != buf[*pos])
- return(mdoc_err(mdoc, tok, *pos, ERR_ARGS_EQ0));
- return(1);
+ if (0 == buf[*pos]) {
+ if ( ! rewind_subblock(MDOC_BODY, mdoc, tok, line, ppos))
+ return(0);
+ return(rewind_expblock(mdoc, tok, line, ppos));
+ }
+ return(mdoc_perr(mdoc, line, ppos, "macro expects no parameters"));
}
- if ( ! rewind_body(mdoc, ppos, tok, tt))
+ if ( ! rewind_subblock(MDOC_BODY, mdoc, tok, line, ppos))
return(0);
lastarg = ppos;
flushed = 0;
if (maxargs > 0) {
- mdoc_tail_alloc(mdoc, ppos, tt);
+ if ( ! mdoc_tail_alloc(mdoc, line, ppos, tt))
+ return(0);
mdoc->next = MDOC_NEXT_CHILD;
}
- for (j = 0; j < MDOC_LINEARG_MAX; j++) {
+ for (j = 0; /* No sentinel. */; j++) {
lastarg = *pos;
if (j == maxargs && ! flushed) {
- if ( ! rewind_expblock(mdoc, ppos, tok, tt))
+ if ( ! rewind_expblock(mdoc, tok, line, ppos))
return(0);
flushed = 1;
}
- c = mdoc_args(mdoc, tok, pos, buf, ARGS_DELIM, &p);
+ c = mdoc_args(mdoc, line, pos, buf, tok, &p);
if (ARGS_ERROR == c)
return(0);
if (ARGS_PUNCT == c)
if (ARGS_EOLN == c)
break;
- if (MDOC_MAX != (c = lookup(mdoc, tok, p))) {
+ if (-1 == (c = lookup(mdoc, line, lastarg, tok, p)))
+ return(0);
+ else if (MDOC_MAX != c) {
if ( ! flushed) {
- if ( ! rewind_expblock(mdoc, ppos, tok, tt))
+ if ( ! rewind_expblock(mdoc, tok, line, ppos))
return(0);
flushed = 1;
}
- if ( ! mdoc_macro(mdoc, c, lastarg, pos, buf))
+ if ( ! mdoc_macro(mdoc, c, line, lastarg, pos, buf))
return(0);
break;
- }
+ }
- mdoc_word_alloc(mdoc, lastarg, p);
+ if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
+ return(0);
mdoc->next = MDOC_NEXT_SIBLING;
}
- if (MDOC_LINEARG_MAX == j)
- return(mdoc_err(mdoc, tok, lastarg, ERR_ARGS_MANY));
-
- if ( ! flushed)
- if ( ! rewind_expblock(mdoc, ppos, tok, tt))
- return(0);
+ if ( ! flushed && ! rewind_expblock(mdoc, tok, line, ppos))
+ return(0);
if (ppos > 1)
return(1);
- return(append_delims(mdoc, tok, pos, buf));
+ return(append_delims(mdoc, 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.
+ * A general text macro. This is a complex case because of punctuation.
+ * If a text macro is followed by words, then punctuation, the macro is
+ * "stopped" and "reopened" following the punctuation. Thus, the
+ * following arises:
+ *
+ * .Fl a ; b
+ *
+ * ELEMENT (.Fl)
+ * TEXT (`a')
+ * TEXT (`;')
+ * ELEMENT (.Fl)
+ * TEXT (`b')
+ *
+ * This must handle the following situations:
+ *
+ * .Fl Ar b ; ;
+ *
+ * ELEMENT (.Fl)
+ * ELEMENT (.Ar)
+ * TEXT (`b')
+ * TEXT (`;')
+ * TEXT (`;')
*/
int
macro_text(MACRO_PROT_ARGS)
{
- int lastarg, lastpunct, c, sz, fl, argc;
+ int la, lastpunct, c, w, argc;
struct mdoc_arg argv[MDOC_LINEARG_MAX];
char *p;
- lastarg = ppos;
+ la = ppos;
lastpunct = 0;
for (argc = 0; argc < MDOC_LINEARG_MAX; argc++) {
- lastarg = *pos;
-
- c = mdoc_argv(mdoc, tok, &argv[argc], pos, buf);
- if (ARGV_EOLN == c || ARGV_WORD == c)
+ 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)
+ } else if (ARGV_ARG == c)
continue;
+
mdoc_argv_free(argc, argv);
return(0);
}
- if ( ! mdoc_valid_pre(mdoc, tok, ppos, argc, argv)) {
+ if (MDOC_LINEARG_MAX == argc) {
+ mdoc_argv_free(argc - 1, argv);
+ return(mdoc_perr(mdoc, line, ppos, "parameter hard-limit exceeded"));
+ }
+
+ c = mdoc_elem_alloc(mdoc, line, ppos, tok, argc, argv);
+
+ if (0 == c) {
mdoc_argv_free(argc, argv);
return(0);
}
- fl = ARGS_DELIM;
- if (MDOC_QUOTABLE & mdoc_macros[tok].flags)
- fl |= ARGS_QUOTED;
-
- mdoc_elem_alloc(mdoc, lastarg, tok, argc, argv);
mdoc->next = MDOC_NEXT_CHILD;
- for (lastpunct = sz = 0; sz + argc < MDOC_LINEARG_MAX; sz++) {
- lastarg = *pos;
-
- if (lastpunct) {
- mdoc_elem_alloc(mdoc, lastarg, tok, argc, argv);
- mdoc->next = MDOC_NEXT_CHILD;
- lastpunct = 0;
- }
-
- c = mdoc_args(mdoc, tok, pos, buf, fl, &p);
- if (ARGS_ERROR == c) {
+ lastpunct = 0;
+ for (;;) {
+ la = *pos;
+ w = mdoc_args(mdoc, line, pos, buf, tok, &p);
+ if (ARGS_ERROR == w) {
mdoc_argv_free(argc, argv);
return(0);
}
- if (ARGS_EOLN == c)
+ if (ARGS_EOLN == w)
break;
- if (ARGS_PUNCT == c)
+ if (ARGS_PUNCT == w)
break;
- if (MDOC_MAX != (c = lookup(mdoc, tok, p))) {
- if ( ! rewind_elem(mdoc, ppos, tok)) {
+ c = ARGS_QWORD == w ? MDOC_MAX :
+ lookup(mdoc, line, la, tok, p);
+
+ if (MDOC_MAX != c && -1 != c) {
+ if (0 == lastpunct && ! rewind_elem(mdoc, tok)) {
mdoc_argv_free(argc, argv);
return(0);
}
mdoc_argv_free(argc, argv);
- if ( ! mdoc_macro(mdoc, c, lastarg, pos, buf))
+ c = mdoc_macro(mdoc, c, line, la, pos, buf);
+ if (0 == c)
return(0);
if (ppos > 1)
return(1);
- return(append_delims(mdoc, tok, pos, buf));
+ return(append_delims(mdoc, line, pos, buf));
+ } else if (-1 == c) {
+ mdoc_argv_free(argc, argv);
+ return(0);
}
- if (mdoc_isdelim(p)) {
- if ( ! rewind_elem(mdoc, ppos, tok)) {
+ if (ARGS_QWORD != w && 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;
}
- mdoc_word_alloc(mdoc, lastarg, p);
+
+ if ( ! mdoc_word_alloc(mdoc, line, la, p))
+ return(0);
mdoc->next = MDOC_NEXT_SIBLING;
}
mdoc_argv_free(argc, argv);
- if (sz == MDOC_LINEARG_MAX)
- return(mdoc_err(mdoc, tok, lastarg, ERR_ARGS_MANY));
-
- if ( ! rewind_elem(mdoc, ppos, tok))
+ if (0 == lastpunct && ! rewind_elem(mdoc, tok))
return(0);
if (ppos > 1)
return(1);
- return(append_delims(mdoc, tok, pos, buf));
+ return(append_delims(mdoc, line, pos, buf));
}
/*
- * Multi-line-scoped macro.
+ * Handle explicit-scope (having a different closure token) and implicit
+ * scope (closing out prior scopes when re-invoked) macros. These
+ * constitute the BLOCK type and usually span multiple lines. These
+ * always have HEAD and sometimes have BODY types. In the multi-line
+ * case:
+ *
+ * .Bd -ragged
+ * Text.
+ * .Fl macro
+ * Another.
+ * .Ed
+ *
+ * BLOCK (.Bd)
+ * HEAD
+ * BODY
+ * TEXT (`Text.')
+ * ELEMENT (.Fl)
+ * TEXT (`macro')
+ * TEXT (`Another.')
+ *
+ * Note that the `.It' macro, possibly the most difficult (as it has
+ * embedded scope, etc.) is handled by this routine.
*/
int
macro_scoped(MACRO_PROT_ARGS)
{
- int c, lastarg, argc, j;
+ int c, lastarg, argc;
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_impblock(mdoc, ppos, tok))
+ /* First rewind extant implicit scope. */
+
+ if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) {
+ if ( ! rewind_subblock(MDOC_BODY, mdoc, tok, line, ppos))
+ return(0);
+ if ( ! rewind_impblock(mdoc, tok, line, ppos))
return(0);
+ }
- lastarg = ppos;
+ /* Parse arguments. */
for (argc = 0; argc < MDOC_LINEARG_MAX; argc++) {
lastarg = *pos;
- c = mdoc_argv(mdoc, tok, &argv[argc], pos, buf);
- if (ARGV_EOLN == c || ARGV_WORD == c)
+ 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)
+ } else if (ARGV_ARG == c)
continue;
mdoc_argv_free(argc, argv);
return(0);
}
- if ( ! mdoc_valid_pre(mdoc, tok, ppos, argc, argv)) {
- mdoc_argv_free(argc, argv);
- return(0);
+ if (MDOC_LINEARG_MAX == argc) {
+ mdoc_argv_free(argc - 1, argv);
+ return(mdoc_perr(mdoc, line, ppos, "parameter hard-limit exceeded"));
}
- mdoc_block_alloc(mdoc, ppos, tok, (size_t)argc, argv);
- mdoc->next = MDOC_NEXT_CHILD;
-
+ 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]) {
- mdoc_head_alloc(mdoc, ppos, tok);
- if ( ! rewind_head(mdoc, ppos, tok))
+ if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
+ return(0);
+ if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok, line, ppos))
+ return(0);
+ if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
return(0);
- mdoc_body_alloc(mdoc, ppos, tok);
mdoc->next = MDOC_NEXT_CHILD;
return(1);
}
- mdoc_head_alloc(mdoc, ppos, tok);
+ if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
+ return(0);
mdoc->next = MDOC_NEXT_CHILD;
- for (j = 0; j < MDOC_LINEARG_MAX; j++) {
+ for (;;) {
lastarg = *pos;
- c = mdoc_args(mdoc, tok, pos, buf, ARGS_DELIM, &p);
+ c = mdoc_args(mdoc, line, pos, buf, tok, &p);
if (ARGS_ERROR == c)
return(0);
break;
if (ARGS_EOLN == c)
break;
+
+ /* FIXME: if .It -column, the lookup must be for a
+ * sub-line component. BLAH. */
- if (MDOC_MAX == (c = lookup(mdoc, tok, p))) {
- mdoc_word_alloc(mdoc, lastarg, p);
+ if (-1 == (c = lookup(mdoc, line, lastarg, tok, p)))
+ return(0);
+
+ 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, lastarg, pos, buf))
+ if ( ! mdoc_macro(mdoc, c, line, lastarg, pos, buf))
return(0);
break;
}
-
- if (j == MDOC_LINEARG_MAX)
- return(mdoc_err(mdoc, tok, lastarg, ERR_ARGS_MANY));
-
- if ( ! rewind_head(mdoc, ppos, tok))
+
+ if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok, line, ppos))
return(0);
- if (1 == ppos && ! append_delims(mdoc, tok, pos, buf))
+ if (1 == ppos && ! append_delims(mdoc, line, pos, buf))
return(0);
- mdoc_body_alloc(mdoc, ppos, tok);
+ if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
+ return(0);
mdoc->next = MDOC_NEXT_CHILD;
return(1);
/*
- * 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.
+ * This handles a case of implicitly-scoped macro (BLOCK) limited to a
+ * single line. Instead of being closed out by a subsequent call to
+ * another macro, the scope is closed at the end of line. These don't
+ * have BODY or TAIL types. Notice that the punctuation falls outside
+ * of the HEAD type.
+ *
+ * .Qq a Fl b Ar d ; ;
+ *
+ * BLOCK (Qq)
+ * HEAD
+ * TEXT (`a')
+ * ELEMENT (.Fl)
+ * TEXT (`b')
+ * ELEMENT (.Ar)
+ * TEXT (`d')
+ * TEXT (`;')
+ * TEXT (`;')
*/
int
macro_scoped_line(MACRO_PROT_ARGS)
{
- int lastarg, c, j;
+ int lastarg, c;
char *p;
- mdoc_block_alloc(mdoc, ppos, tok, 0, NULL);
+ if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, 0, NULL))
+ return(0);
mdoc->next = MDOC_NEXT_CHILD;
- mdoc_head_alloc(mdoc, ppos, tok);
+ if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
+ return(0);
+ mdoc->next = MDOC_NEXT_SIBLING;
+ if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
+ return(0);
mdoc->next = MDOC_NEXT_CHILD;
/* XXX - no known argument macros. */
- if ( ! mdoc_valid_pre(mdoc, tok, ppos, 0, NULL))
- return(0);
-
- /* Process line parameters. */
-
- for (lastarg = ppos, j = 0; j < MDOC_LINEARG_MAX; j++) {
+ lastarg = ppos;
+ for (;;) {
lastarg = *pos;
- c = mdoc_args(mdoc, tok, pos, buf, ARGS_DELIM, &p);
+ c = mdoc_args(mdoc, line, pos, buf, tok, &p);
if (ARGS_ERROR == c)
return(0);
if (ARGS_EOLN == c)
break;
- if (MDOC_MAX == (c = lookup(mdoc, tok, p))) {
- mdoc_word_alloc(mdoc, lastarg, p);
+ 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, lastarg, pos, buf))
+ if ( ! mdoc_macro(mdoc, c, line, lastarg, pos, buf))
return(0);
break;
}
- if (j == MDOC_LINEARG_MAX)
- return(mdoc_err(mdoc, tok, lastarg, ERR_ARGS_MANY));
-
if (1 == ppos) {
- if ( ! rewind_head(mdoc, ppos, tok))
+ if ( ! rewind_subblock(MDOC_BODY, mdoc, tok, line, ppos))
return(0);
- if ( ! append_delims(mdoc, tok, pos, buf))
+ if ( ! append_delims(mdoc, line, pos, buf))
return(0);
- }
- return(rewind_impblock(mdoc, ppos, tok));
+ } else if ( ! rewind_subblock(MDOC_BODY, mdoc, tok, line, ppos))
+ return(0);
+ return(rewind_impblock(mdoc, tok, line, ppos));
}
+/*
+ * A constant-scoped macro is like a simple-scoped macro (mdoc_scoped)
+ * except that it doesn't handle implicit scopes and explicit ones have
+ * a fixed number of TEXT children to the BODY.
+ *
+ * .Fl a So b Sc ;
+ *
+ * ELEMENT (.Fl)
+ * TEXT (`a')
+ * BLOCK (.So)
+ * HEAD
+ * BODY
+ * TEXT (`b')
+ * TEXT (';')
+ */
int
macro_constant_scoped(MACRO_PROT_ARGS)
{
break;
}
- if ( ! mdoc_valid_pre(mdoc, tok, ppos, 0, NULL))
- return(0);
-
- mdoc_block_alloc(mdoc, ppos, tok, 0, NULL);
+ if ( ! mdoc_block_alloc(mdoc, line, ppos, tok, 0, NULL))
+ return(0);
mdoc->next = MDOC_NEXT_CHILD;
if (0 == maxargs) {
- mdoc_head_alloc(mdoc, ppos, tok);
- if ( ! rewind_head(mdoc, ppos, tok))
+ if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
+ return(0);
+ if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok, line, ppos))
+ return(0);
+ if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
return(0);
- mdoc_body_alloc(mdoc, ppos, tok);
flushed = 1;
- } else
- mdoc_head_alloc(mdoc, ppos, tok);
+ } else if ( ! mdoc_head_alloc(mdoc, line, ppos, tok))
+ return(0);
mdoc->next = MDOC_NEXT_CHILD;
- for (j = 0; j < MDOC_LINEARG_MAX; j++) {
+ for (j = 0; /* No sentinel. */; j++) {
lastarg = *pos;
if (j == maxargs && ! flushed) {
- if ( ! rewind_head(mdoc, ppos, tok))
+ if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok, line, ppos))
return(0);
flushed = 1;
- mdoc_body_alloc(mdoc, ppos, tok);
+ if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
+ return(0);
mdoc->next = MDOC_NEXT_CHILD;
}
- c = mdoc_args(mdoc, tok, pos, buf, ARGS_DELIM, &p);
+ c = mdoc_args(mdoc, line, pos, buf, tok, &p);
if (ARGS_ERROR == c)
return(0);
if (ARGS_PUNCT == c)
if (ARGS_EOLN == c)
break;
- if (MDOC_MAX != (c = lookup(mdoc, tok, p))) {
+ if (-1 == (c = lookup(mdoc, line, lastarg, tok, p)))
+ return(0);
+ else if (MDOC_MAX != c) {
if ( ! flushed) {
- if ( ! rewind_head(mdoc, ppos, tok))
+ if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok, line, ppos))
return(0);
flushed = 1;
- mdoc_body_alloc(mdoc, ppos, tok);
+ if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
+ return(0);
mdoc->next = MDOC_NEXT_CHILD;
}
- if ( ! mdoc_macro(mdoc, c, lastarg, pos, buf))
+ if ( ! mdoc_macro(mdoc, c, line, lastarg, pos, buf))
return(0);
break;
}
if ( ! flushed && mdoc_isdelim(p)) {
- if ( ! rewind_head(mdoc, ppos, tok))
+ if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok, line, ppos))
return(0);
flushed = 1;
- mdoc_body_alloc(mdoc, ppos, tok);
+ if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
+ return(0);
mdoc->next = MDOC_NEXT_CHILD;
}
- mdoc_word_alloc(mdoc, lastarg, p);
+ if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
+ return(0);
mdoc->next = MDOC_NEXT_SIBLING;
}
- if (MDOC_LINEARG_MAX == j)
- return(mdoc_err(mdoc, tok, lastarg, ERR_ARGS_MANY));
-
if ( ! flushed) {
- if ( ! rewind_head(mdoc, ppos, tok))
+ if ( ! rewind_subblock(MDOC_HEAD, mdoc, tok, line, ppos))
+ return(0);
+ if ( ! mdoc_body_alloc(mdoc, line, ppos, tok))
return(0);
- mdoc_body_alloc(mdoc, ppos, tok);
mdoc->next = MDOC_NEXT_CHILD;
}
if (ppos > 1)
return(1);
- return(append_delims(mdoc, tok, pos, buf));
+ return(append_delims(mdoc, 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.
+ * A delimited constant is very similar to the macros parsed by
+ * macro_text except that, in the event of punctuation, the macro isn't
+ * "re-opened" as it is in macro_text. Also, these macros have a fixed
+ * number of parameters.
+ *
+ * .Fl a No b
+ *
+ * ELEMENT (.Fl)
+ * TEXT (`a')
+ * ELEMENT (.No)
+ * TEXT (`b')
*/
int
macro_constant_delimited(MACRO_PROT_ARGS)
/* FALLTHROUGH */
case (MDOC_Ns):
/* FALLTHROUGH */
+ case (MDOC_Pf):
+ /* FALLTHROUGH */
case (MDOC_Ux):
/* FALLTHROUGH */
case (MDOC_St):
for (argc = 0; argc < MDOC_LINEARG_MAX; argc++) {
lastarg = *pos;
- c = mdoc_argv(mdoc, tok, &argv[argc], pos, buf);
- if (ARGV_EOLN == c || ARGV_WORD == c)
+ 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)
+ } else if (ARGV_ARG == c)
continue;
mdoc_argv_free(argc, argv);
return(0);
}
- if ( ! mdoc_valid_pre(mdoc, tok, ppos, argc, argv)) {
- mdoc_argv_free(argc, argv);
- return(0);
+ if (MDOC_LINEARG_MAX == argc) {
+ mdoc_argv_free(argc - 1, argv);
+ return(mdoc_perr(mdoc, line, ppos, "parameter hard-limit exceeded"));
}
- mdoc_elem_alloc(mdoc, lastarg, tok, argc, argv);
- mdoc->next = MDOC_NEXT_CHILD;
-
+ c = mdoc_elem_alloc(mdoc, line, ppos, tok, argc, argv);
mdoc_argv_free(argc, argv);
- for (j = 0; j < MDOC_LINEARG_MAX; j++) {
+ if (0 == c)
+ return(0);
+
+ mdoc->next = MDOC_NEXT_CHILD;
+
+ for (j = 0; /* No sentinel. */; j++) {
lastarg = *pos;
if (j == maxargs && ! flushed) {
- if ( ! rewind_elem(mdoc, ppos, tok))
+ if ( ! rewind_elem(mdoc, tok))
return(0);
flushed = 1;
}
- c = mdoc_args(mdoc, tok, pos, buf, ARGS_DELIM, &p);
+ c = mdoc_args(mdoc, line, pos, buf, tok, &p);
if (ARGS_ERROR == c)
return(0);
if (ARGS_PUNCT == c)
if (ARGS_EOLN == c)
break;
- if (MDOC_MAX != (c = lookup(mdoc, tok, p))) {
- if ( ! flushed && ! rewind_elem(mdoc, ppos, tok))
+ 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, lastarg, pos, buf))
+ if ( ! mdoc_macro(mdoc, c, line, lastarg, pos, buf))
return(0);
break;
}
if ( ! flushed && mdoc_isdelim(p)) {
- if ( ! rewind_elem(mdoc, ppos, tok))
+ if ( ! rewind_elem(mdoc, tok))
return(0);
flushed = 1;
}
- mdoc_word_alloc(mdoc, lastarg, p);
+ if ( ! mdoc_word_alloc(mdoc, line, lastarg, p))
+ return(0);
mdoc->next = MDOC_NEXT_SIBLING;
}
- if (MDOC_LINEARG_MAX == j)
- return(mdoc_err(mdoc, tok, lastarg, ERR_ARGS_MANY));
-
- if ( ! flushed && rewind_elem(mdoc, ppos, tok))
+ if ( ! flushed && ! rewind_elem(mdoc, tok))
return(0);
if (ppos > 1)
return(1);
- return(append_delims(mdoc, tok, pos, buf));
+ return(append_delims(mdoc, line, pos, buf));
}
/*
- * Constant macros span an entire line: they constitute a macro and all
- * of its arguments and child data.
+ * A constant macro is the simplest classification. It spans an entire
+ * line.
*/
int
macro_constant(MACRO_PROT_ARGS)
{
- int c, lastarg, argc, sz, fl;
- struct mdoc_arg argv[MDOC_LINEARG_MAX];
- char *p;
-
- /*assert( ! (MDOC_PARSED & mdoc_macros[tok].flags));*/
- /*FIXME*/
+ int c, w, la, argc;
+ struct mdoc_arg argv[MDOC_LINEARG_MAX];
+ char *p;
- fl = 0;
- if (MDOC_QUOTABLE & mdoc_macros[tok].flags)
- fl = ARGS_QUOTED;
+ assert( ! (MDOC_CALLABLE & mdoc_macros[tok].flags));
for (argc = 0; argc < MDOC_LINEARG_MAX; argc++) {
- lastarg = *pos;
- c = mdoc_argv(mdoc, tok, &argv[argc], pos, buf);
+ la = *pos;
+ c = mdoc_argv(mdoc, line, tok, &argv[argc], pos, buf);
if (ARGV_EOLN == c)
break;
- else if (ARGV_ARG == c)
- continue;
- else if (ARGV_WORD == c)
+ 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_err(mdoc, tok, lastarg, ERR_ARGS_MANY));
+ mdoc_argv_free(argc - 1, argv);
+ return(mdoc_perr(mdoc, line, ppos, "parameter hard-limit exceeded"));
}
- mdoc_elem_alloc(mdoc, ppos, tok, argc, argv);
- mdoc->next = MDOC_NEXT_CHILD;
-
+ c = mdoc_elem_alloc(mdoc, line, ppos, tok, argc, argv);
mdoc_argv_free(argc, argv);
- for (sz = 0; sz + argc < MDOC_LINEARG_MAX; sz++) {
- lastarg = *pos;
- c = mdoc_args(mdoc, tok, pos, buf, fl, &p);
- if (ARGS_ERROR == c)
+ if (0 == c)
+ return(0);
+
+ mdoc->next = MDOC_NEXT_CHILD;
+
+ for (;;) {
+ la = *pos;
+ w = mdoc_args(mdoc, line, pos, buf, tok, &p);
+ if (ARGS_ERROR == w)
return(0);
- if (ARGS_EOLN == c)
+ if (ARGS_EOLN == w)
break;
- mdoc_word_alloc(mdoc, lastarg, p);
+ c = ARGS_QWORD == w ? MDOC_MAX :
+ lookup(mdoc, line, la, tok, p);
+
+ if (MDOC_MAX != c && -1 != c) {
+ if ( ! rewind_elem(mdoc, tok))
+ return(0);
+ return(mdoc_macro(mdoc, c, line, la, pos, buf));
+ } else if (-1 == c)
+ return(0);
+
+ if ( ! mdoc_word_alloc(mdoc, line, la, p))
+ return(0);
mdoc->next = MDOC_NEXT_SIBLING;
}
- if (MDOC_LINEARG_MAX == sz + argc)
- return(mdoc_err(mdoc, tok, lastarg, ERR_ARGS_MANY));
-
- return(rewind_elem(mdoc, ppos, tok));
+ return(rewind_elem(mdoc, tok));
}
macro_obsolete(MACRO_PROT_ARGS)
{
- return(mdoc_warn(mdoc, tok, ppos, WARN_IGN_OBSOLETE));
+ return(mdoc_pwarn(mdoc, line, ppos, WARN_SYNTAX, "macro is obsolete"));
}
+/*
+ * This is called at the end of parsing. It must traverse up the tree,
+ * closing out open [implicit] scopes. Obviously, open explicit scopes
+ * are errors.
+ */
int
macro_end(struct mdoc *mdoc)
{
+ struct mdoc_node *n;
assert(mdoc->first);
assert(mdoc->last);
- return(rewind_last(mdoc, -1, mdoc->first));
+
+ /* Scan for open explicit scopes. */
+
+ n = MDOC_VALID & mdoc->last->flags ?
+ mdoc->last->parent : mdoc->last;
+
+ for ( ; n; n = n->parent) {
+ if (MDOC_BLOCK != n->type)
+ continue;
+ if ( ! (MDOC_EXPLICIT & mdoc_macros[n->tok].flags))
+ continue;
+ return(mdoc_nerr(mdoc, n, "macro scope still open on exit"));
+ }
+
+ return(rewind_last(mdoc, mdoc->first));
}
git.ckatri.com / mandoc.git / blobdiff