X-Git-Url: https://git.cameronkatri.com/mandoc.git/blobdiff_plain/ed556a16a0d0d619b59f20de7ff6e61eb00b0fde..bbc9692176a7890be65fe472b75bbb307fcf0b62:/mdoc.c

diff --git a/mdoc.c b/mdoc.c
index 396d1019..71803531 100644
--- a/mdoc.c
+++ b/mdoc.c
@@ -1,280 +1,55 @@
-/*	$Id: mdoc.c,v 1.202 2012/11/16 13:40:36 schwarze Exp $ */
+/*	$Id: mdoc.c,v 1.268 2017/08/11 16:56:21 schwarze Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2010, 2012 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2010, 2012-2017 Ingo Schwarze <schwarze@openbsd.org>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
-#ifdef HAVE_CONFIG_H
 #include "config.h"
-#endif
 
 #include <sys/types.h>
 
 #include <assert.h>
+#include <ctype.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
 
-#include "mdoc.h"
+#include "mandoc_aux.h"
 #include "mandoc.h"
-#include "libmdoc.h"
+#include "roff.h"
+#include "mdoc.h"
 #include "libmandoc.h"
+#include "roff_int.h"
+#include "libmdoc.h"
 
-const	char *const __mdoc_macronames[MDOC_MAX] = {		 
-	"Ap",		"Dd",		"Dt",		"Os",
-	"Sh",		"Ss",		"Pp",		"D1",
-	"Dl",		"Bd",		"Ed",		"Bl",
-	"El",		"It",		"Ad",		"An",
-	"Ar",		"Cd",		"Cm",		"Dv",
-	"Er",		"Ev",		"Ex",		"Fa",
-	"Fd",		"Fl",		"Fn",		"Ft",
-	"Ic",		"In",		"Li",		"Nd",
-	"Nm",		"Op",		"Ot",		"Pa",
-	"Rv",		"St",		"Va",		"Vt",
-	/* LINTED */
-	"Xr",		"%A",		"%B",		"%D",
-	/* LINTED */
-	"%I",		"%J",		"%N",		"%O",
-	/* LINTED */
-	"%P",		"%R",		"%T",		"%V",
-	"Ac",		"Ao",		"Aq",		"At",
-	"Bc",		"Bf",		"Bo",		"Bq",
-	"Bsx",		"Bx",		"Db",		"Dc",
-	"Do",		"Dq",		"Ec",		"Ef",
-	"Em",		"Eo",		"Fx",		"Ms",
-	"No",		"Ns",		"Nx",		"Ox",
-	"Pc",		"Pf",		"Po",		"Pq",
-	"Qc",		"Ql",		"Qo",		"Qq",
-	"Re",		"Rs",		"Sc",		"So",
-	"Sq",		"Sm",		"Sx",		"Sy",
-	"Tn",		"Ux",		"Xc",		"Xo",
-	"Fo",		"Fc",		"Oo",		"Oc",
-	"Bk",		"Ek",		"Bt",		"Hf",
-	"Fr",		"Ud",		"Lb",		"Lp",
-	"Lk",		"Mt",		"Brq",		"Bro",
-	/* LINTED */
-	"Brc",		"%C",		"Es",		"En",
-	/* LINTED */
-	"Dx",		"%Q",		"br",		"sp",
-	/* LINTED */
-	"%U",		"Ta"
-	};
-
-const	char *const __mdoc_argnames[MDOC_ARG_MAX] = {		 
+const	char *const __mdoc_argnames[MDOC_ARG_MAX] = {
 	"split",		"nosplit",		"ragged",
-	"unfilled",		"literal",		"file",		 
-	"offset",		"bullet",		"dash",		 
-	"hyphen",		"item",			"enum",		 
-	"tag",			"diag",			"hang",		 
-	"ohang",		"inset",		"column",	 
-	"width",		"compact",		"std",	 
+	"unfilled",		"literal",		"file",
+	"offset",		"bullet",		"dash",
+	"hyphen",		"item",			"enum",
+	"tag",			"diag",			"hang",
+	"ohang",		"inset",		"column",
+	"width",		"compact",		"std",
 	"filled",		"words",		"emphasis",
 	"symbolic",		"nested",		"centered"
-	};
-
-const	char * const *mdoc_macronames = __mdoc_macronames;
+};
 const	char * const *mdoc_argnames = __mdoc_argnames;
 
-static	void		  mdoc_node_free(struct mdoc_node *);
-static	void		  mdoc_node_unlink(struct mdoc *, 
-				struct mdoc_node *);
-static	void		  mdoc_free1(struct mdoc *);
-static	void		  mdoc_alloc1(struct mdoc *);
-static	struct mdoc_node *node_alloc(struct mdoc *, int, int, 
-				enum mdoct, enum mdoc_type);
-static	int		  node_append(struct mdoc *, 
-				struct mdoc_node *);
-#if 0
-static	int		  mdoc_preptext(struct mdoc *, int, char *, int);
-#endif
-static	int		  mdoc_ptext(struct mdoc *, int, char *, int);
-static	int		  mdoc_pmacro(struct mdoc *, int, char *, int);
-
-const struct mdoc_node *
-mdoc_node(const struct mdoc *m)
-{
-
-	assert( ! (MDOC_HALT & m->flags));
-	return(m->first);
-}
-
-
-const struct mdoc_meta *
-mdoc_meta(const struct mdoc *m)
-{
-
-	assert( ! (MDOC_HALT & m->flags));
-	return(&m->meta);
-}
-
-
-/*
- * Frees volatile resources (parse tree, meta-data, fields).
- */
-static void
-mdoc_free1(struct mdoc *mdoc)
-{
-
-	if (mdoc->first)
-		mdoc_node_delete(mdoc, mdoc->first);
-	if (mdoc->meta.title)
-		free(mdoc->meta.title);
-	if (mdoc->meta.os)
-		free(mdoc->meta.os);
-	if (mdoc->meta.name)
-		free(mdoc->meta.name);
-	if (mdoc->meta.arch)
-		free(mdoc->meta.arch);
-	if (mdoc->meta.vol)
-		free(mdoc->meta.vol);
-	if (mdoc->meta.msec)
-		free(mdoc->meta.msec);
-	if (mdoc->meta.date)
-		free(mdoc->meta.date);
-}
-
-
-/*
- * Allocate all volatile resources (parse tree, meta-data, fields).
- */
-static void
-mdoc_alloc1(struct mdoc *mdoc)
-{
-
-	memset(&mdoc->meta, 0, sizeof(struct mdoc_meta));
-	mdoc->flags = 0;
-	mdoc->lastnamed = mdoc->lastsec = SEC_NONE;
-	mdoc->last = mandoc_calloc(1, sizeof(struct mdoc_node));
-	mdoc->first = mdoc->last;
-	mdoc->last->type = MDOC_ROOT;
-	mdoc->last->tok = MDOC_MAX;
-	mdoc->next = MDOC_NEXT_CHILD;
-}
-
-
-/*
- * Free up volatile resources (see mdoc_free1()) then re-initialises the
- * data with mdoc_alloc1().  After invocation, parse data has been reset
- * and the parser is ready for re-invocation on a new tree; however,
- * cross-parse non-volatile data is kept intact.
- */
-void
-mdoc_reset(struct mdoc *mdoc)
-{
-
-	mdoc_free1(mdoc);
-	mdoc_alloc1(mdoc);
-}
-
-
-/*
- * Completely free up all volatile and non-volatile parse resources.
- * After invocation, the pointer is no longer usable.
- */
-void
-mdoc_free(struct mdoc *mdoc)
-{
-
-	mdoc_free1(mdoc);
-	free(mdoc);
-}
-
-
-/*
- * Allocate volatile and non-volatile parse resources.  
- */
-struct mdoc *
-mdoc_alloc(struct roff *roff, struct mparse *parse, char *defos)
-{
-	struct mdoc	*p;
-
-	p = mandoc_calloc(1, sizeof(struct mdoc));
-
-	p->parse = parse;
-	p->defos = defos;
-	p->roff = roff;
-
-	mdoc_hash_init();
-	mdoc_alloc1(p);
-	return(p);
-}
-
-
-/*
- * Climb back up the parse tree, validating open scopes.  Mostly calls
- * through to macro_end() in macro.c.
- */
-int
-mdoc_endparse(struct mdoc *m)
-{
-
-	assert( ! (MDOC_HALT & m->flags));
-	if (mdoc_macroend(m))
-		return(1);
-	m->flags |= MDOC_HALT;
-	return(0);
-}
-
-int
-mdoc_addeqn(struct mdoc *m, const struct eqn *ep)
-{
-	struct mdoc_node *n;
-
-	assert( ! (MDOC_HALT & m->flags));
-
-	/* No text before an initial macro. */
-
-	if (SEC_NONE == m->lastnamed) {
-		mdoc_pmsg(m, ep->ln, ep->pos, MANDOCERR_NOTEXT);
-		return(1);
-	}
-
-	n = node_alloc(m, ep->ln, ep->pos, MDOC_MAX, MDOC_EQN);
-	n->eqn = ep;
-
-	if ( ! node_append(m, n))
-		return(0);
-
-	m->next = MDOC_NEXT_SIBLING;
-	return(1);
-}
-
-int
-mdoc_addspan(struct mdoc *m, const struct tbl_span *sp)
-{
-	struct mdoc_node *n;
-
-	assert( ! (MDOC_HALT & m->flags));
-
-	/* No text before an initial macro. */
-
-	if (SEC_NONE == m->lastnamed) {
-		mdoc_pmsg(m, sp->line, 0, MANDOCERR_NOTEXT);
-		return(1);
-	}
-
-	n = node_alloc(m, sp->line, 0, MDOC_MAX, MDOC_TBL);
-	n->span = sp;
-
-	if ( ! node_append(m, n))
-		return(0);
-
-	m->next = MDOC_NEXT_SIBLING;
-	return(1);
-}
+static	int		  mdoc_ptext(struct roff_man *, int, char *, int);
+static	int		  mdoc_pmacro(struct roff_man *, int, char *, int);
 
 
 /*
@@ -282,12 +57,11 @@ mdoc_addspan(struct mdoc *m, const struct tbl_span *sp)
  * the macro (mdoc_pmacro()) or text parser (mdoc_ptext()).
  */
 int
-mdoc_parseln(struct mdoc *m, int ln, char *buf, int offs)
+mdoc_parseln(struct roff_man *mdoc, int ln, char *buf, int offs)
 {
 
-	assert( ! (MDOC_HALT & m->flags));
-
-	m->flags |= MDOC_NEWLINE;
+	if (mdoc->last->type != ROFFT_EQN || ln > mdoc->last->line)
+		mdoc->flags |= MDOC_NEWLINE;
 
 	/*
 	 * Let the roff nS register switch SYNOPSIS mode early,
@@ -295,465 +69,135 @@ mdoc_parseln(struct mdoc *m, int ln, char *buf, int offs)
 	 * whether this mode is on or off.
 	 * Note that this mode is also switched by the Sh macro.
 	 */
-	if (roff_regisset(m->roff, REG_nS)) {
-		if (roff_regget(m->roff, REG_nS))
-			m->flags |= MDOC_SYNOPSIS;
-		else
-			m->flags &= ~MDOC_SYNOPSIS;
-	}
-
-	return(roff_getcontrol(m->roff, buf, &offs) ?
-			mdoc_pmacro(m, ln, buf, offs) :
-			mdoc_ptext(m, ln, buf, offs));
-}
-
-int
-mdoc_macro(MACRO_PROT_ARGS)
-{
-	assert(tok < MDOC_MAX);
-
-	/* If we're in the body, deny prologue calls. */
-
-	if (MDOC_PROLOGUE & mdoc_macros[tok].flags && 
-			MDOC_PBODY & m->flags) {
-		mdoc_pmsg(m, line, ppos, MANDOCERR_BADBODY);
-		return(1);
-	}
-
-	/* If we're in the prologue, deny "body" macros.  */
-
-	if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) && 
-			! (MDOC_PBODY & m->flags)) {
-		mdoc_pmsg(m, line, ppos, MANDOCERR_BADPROLOG);
-		if (NULL == m->meta.msec)
-			m->meta.msec = mandoc_strdup("1");
-		if (NULL == m->meta.title)
-			m->meta.title = mandoc_strdup("UNKNOWN");
-		if (NULL == m->meta.vol)
-			m->meta.vol = mandoc_strdup("LOCAL");
-		if (NULL == m->meta.os)
-			m->meta.os = mandoc_strdup("LOCAL");
-		if (NULL == m->meta.date)
-			m->meta.date = mandoc_normdate
-				(m->parse, NULL, line, ppos);
-		m->flags |= MDOC_PBODY;
-	}
-
-	return((*mdoc_macros[tok].fp)(m, tok, line, ppos, pos, buf));
-}
-
-
-static int
-node_append(struct mdoc *mdoc, struct mdoc_node *p)
-{
-
-	assert(mdoc->last);
-	assert(mdoc->first);
-	assert(MDOC_ROOT != p->type);
-
-	switch (mdoc->next) {
-	case (MDOC_NEXT_SIBLING):
-		mdoc->last->next = p;
-		p->prev = mdoc->last;
-		p->parent = mdoc->last->parent;
-		break;
-	case (MDOC_NEXT_CHILD):
-		mdoc->last->child = p;
-		p->parent = mdoc->last;
-		break;
-	default:
-		abort();
-		/* NOTREACHED */
-	}
-
-	p->parent->nchild++;
-
-	/*
-	 * Copy over the normalised-data pointer of our parent.  Not
-	 * everybody has one, but copying a null pointer is fine.
-	 */
-
-	switch (p->type) {
-	case (MDOC_BODY):
-		if (ENDBODY_NOT != p->end)
-			break;
-		/* FALLTHROUGH */
-	case (MDOC_TAIL):
-		/* FALLTHROUGH */
-	case (MDOC_HEAD):
-		p->norm = p->parent->norm;
-		break;
-	default:
-		break;
-	}
-
-	if ( ! mdoc_valid_pre(mdoc, p))
-		return(0);
-
-	switch (p->type) {
-	case (MDOC_HEAD):
-		assert(MDOC_BLOCK == p->parent->type);
-		p->parent->head = p;
-		break;
-	case (MDOC_TAIL):
-		assert(MDOC_BLOCK == p->parent->type);
-		p->parent->tail = p;
-		break;
-	case (MDOC_BODY):
-		if (p->end)
-			break;
-		assert(MDOC_BLOCK == p->parent->type);
-		p->parent->body = p;
-		break;
-	default:
-		break;
-	}
-
-	mdoc->last = p;
-
-	switch (p->type) {
-	case (MDOC_TBL):
-		/* FALLTHROUGH */
-	case (MDOC_TEXT):
-		if ( ! mdoc_valid_post(mdoc))
-			return(0);
-		break;
-	default:
-		break;
-	}
-
-	return(1);
-}
-
-
-static struct mdoc_node *
-node_alloc(struct mdoc *m, int line, int pos, 
-		enum mdoct tok, enum mdoc_type type)
-{
-	struct mdoc_node *p;
-
-	p = mandoc_calloc(1, sizeof(struct mdoc_node));
-	p->sec = m->lastsec;
-	p->line = line;
-	p->pos = pos;
-	p->tok = tok;
-	p->type = type;
-
-	/* Flag analysis. */
-
-	if (MDOC_SYNOPSIS & m->flags)
-		p->flags |= MDOC_SYNPRETTY;
+	if (roff_getreg(mdoc->roff, "nS"))
+		mdoc->flags |= MDOC_SYNOPSIS;
 	else
-		p->flags &= ~MDOC_SYNPRETTY;
-	if (MDOC_NEWLINE & m->flags)
-		p->flags |= MDOC_LINE;
-	m->flags &= ~MDOC_NEWLINE;
+		mdoc->flags &= ~MDOC_SYNOPSIS;
 
-	return(p);
+	return roff_getcontrol(mdoc->roff, buf, &offs) ?
+	    mdoc_pmacro(mdoc, ln, buf, offs) :
+	    mdoc_ptext(mdoc, ln, buf, offs);
 }
 
-
-int
-mdoc_tail_alloc(struct mdoc *m, int line, int pos, enum mdoct tok)
-{
-	struct mdoc_node *p;
-
-	p = node_alloc(m, line, pos, tok, MDOC_TAIL);
-	if ( ! node_append(m, p))
-		return(0);
-	m->next = MDOC_NEXT_CHILD;
-	return(1);
-}
-
-
-int
-mdoc_head_alloc(struct mdoc *m, int line, int pos, enum mdoct tok)
+void
+mdoc_macro(MACRO_PROT_ARGS)
 {
-	struct mdoc_node *p;
-
-	assert(m->first);
-	assert(m->last);
-
-	p = node_alloc(m, line, pos, tok, MDOC_HEAD);
-	if ( ! node_append(m, p))
-		return(0);
-	m->next = MDOC_NEXT_CHILD;
-	return(1);
+	assert(tok >= MDOC_Dd && tok < MDOC_MAX);
+	(*mdoc_macros[tok].fp)(mdoc, tok, line, ppos, pos, buf);
 }
 
-
-int
-mdoc_body_alloc(struct mdoc *m, int line, int pos, enum mdoct tok)
+void
+mdoc_tail_alloc(struct roff_man *mdoc, int line, int pos, enum roff_tok tok)
 {
-	struct mdoc_node *p;
+	struct roff_node *p;
 
-	p = node_alloc(m, line, pos, tok, MDOC_BODY);
-	if ( ! node_append(m, p))
-		return(0);
-	m->next = MDOC_NEXT_CHILD;
-	return(1);
+	p = roff_node_alloc(mdoc, line, pos, ROFFT_TAIL, tok);
+	roff_node_append(mdoc, p);
+	mdoc->next = ROFF_NEXT_CHILD;
 }
 
-
-int
-mdoc_endbody_alloc(struct mdoc *m, int line, int pos, enum mdoct tok,
-		struct mdoc_node *body, enum mdoc_endbody end)
+struct roff_node *
+mdoc_endbody_alloc(struct roff_man *mdoc, int line, int pos,
+    enum roff_tok tok, struct roff_node *body)
 {
-	struct mdoc_node *p;
+	struct roff_node *p;
 
-	p = node_alloc(m, line, pos, tok, MDOC_BODY);
-	p->pending = body;
+	body->flags |= NODE_ENDED;
+	body->parent->flags |= NODE_ENDED;
+	p = roff_node_alloc(mdoc, line, pos, ROFFT_BODY, tok);
+	p->body = body;
 	p->norm = body->norm;
-	p->end = end;
-	if ( ! node_append(m, p))
-		return(0);
-	m->next = MDOC_NEXT_SIBLING;
-	return(1);
+	p->end = ENDBODY_SPACE;
+	roff_node_append(mdoc, p);
+	mdoc->next = ROFF_NEXT_SIBLING;
+	return p;
 }
 
-
-int
-mdoc_block_alloc(struct mdoc *m, int line, int pos, 
-		enum mdoct tok, struct mdoc_arg *args)
+struct roff_node *
+mdoc_block_alloc(struct roff_man *mdoc, int line, int pos,
+    enum roff_tok tok, struct mdoc_arg *args)
 {
-	struct mdoc_node *p;
+	struct roff_node *p;
 
-	p = node_alloc(m, line, pos, tok, MDOC_BLOCK);
+	p = roff_node_alloc(mdoc, line, pos, ROFFT_BLOCK, tok);
 	p->args = args;
 	if (p->args)
 		(args->refcnt)++;
 
 	switch (tok) {
-	case (MDOC_Bd):
-		/* FALLTHROUGH */
-	case (MDOC_Bf):
-		/* FALLTHROUGH */
-	case (MDOC_Bl):
-		/* FALLTHROUGH */
-	case (MDOC_Rs):
+	case MDOC_Bd:
+	case MDOC_Bf:
+	case MDOC_Bl:
+	case MDOC_En:
+	case MDOC_Rs:
 		p->norm = mandoc_calloc(1, sizeof(union mdoc_data));
 		break;
 	default:
 		break;
 	}
-
-	if ( ! node_append(m, p))
-		return(0);
-	m->next = MDOC_NEXT_CHILD;
-	return(1);
+	roff_node_append(mdoc, p);
+	mdoc->next = ROFF_NEXT_CHILD;
+	return p;
 }
 
-
-int
-mdoc_elem_alloc(struct mdoc *m, int line, int pos, 
-		enum mdoct tok, struct mdoc_arg *args)
+void
+mdoc_elem_alloc(struct roff_man *mdoc, int line, int pos,
+     enum roff_tok tok, struct mdoc_arg *args)
 {
-	struct mdoc_node *p;
+	struct roff_node *p;
 
-	p = node_alloc(m, line, pos, tok, MDOC_ELEM);
+	p = roff_node_alloc(mdoc, line, pos, ROFFT_ELEM, tok);
 	p->args = args;
 	if (p->args)
 		(args->refcnt)++;
 
 	switch (tok) {
-	case (MDOC_An):
+	case MDOC_An:
 		p->norm = mandoc_calloc(1, sizeof(union mdoc_data));
 		break;
 	default:
 		break;
 	}
-
-	if ( ! node_append(m, p))
-		return(0);
-	m->next = MDOC_NEXT_CHILD;
-	return(1);
-}
-
-int
-mdoc_word_alloc(struct mdoc *m, int line, int pos, const char *p)
-{
-	struct mdoc_node *n;
-
-	n = node_alloc(m, line, pos, MDOC_MAX, MDOC_TEXT);
-	n->string = roff_strdup(m->roff, p);
-
-	if ( ! node_append(m, n))
-		return(0);
-
-	m->next = MDOC_NEXT_SIBLING;
-	return(1);
-}
-
-
-static void
-mdoc_node_free(struct mdoc_node *p)
-{
-
-	if (MDOC_BLOCK == p->type || MDOC_ELEM == p->type)
-		free(p->norm);
-	if (p->string)
-		free(p->string);
-	if (p->args)
-		mdoc_argv_free(p->args);
-	free(p);
-}
-
-
-static void
-mdoc_node_unlink(struct mdoc *m, struct mdoc_node *n)
-{
-
-	/* Adjust siblings. */
-
-	if (n->prev)
-		n->prev->next = n->next;
-	if (n->next)
-		n->next->prev = n->prev;
-
-	/* Adjust parent. */
-
-	if (n->parent) {
-		n->parent->nchild--;
-		if (n->parent->child == n)
-			n->parent->child = n->prev ? n->prev : n->next;
-		if (n->parent->last == n)
-			n->parent->last = n->prev ? n->prev : NULL;
-	}
-
-	/* Adjust parse point, if applicable. */
-
-	if (m && m->last == n) {
-		if (n->prev) {
-			m->last = n->prev;
-			m->next = MDOC_NEXT_SIBLING;
-		} else {
-			m->last = n->parent;
-			m->next = MDOC_NEXT_CHILD;
-		}
-	}
-
-	if (m && m->first == n)
-		m->first = NULL;
+	roff_node_append(mdoc, p);
+	mdoc->next = ROFF_NEXT_CHILD;
 }
 
-
 void
-mdoc_node_delete(struct mdoc *m, struct mdoc_node *p)
+mdoc_node_relink(struct roff_man *mdoc, struct roff_node *p)
 {
 
-	while (p->child) {
-		assert(p->nchild);
-		mdoc_node_delete(m, p->child);
-	}
-	assert(0 == p->nchild);
-
-	mdoc_node_unlink(m, p);
-	mdoc_node_free(p);
+	roff_node_unlink(mdoc, p);
+	p->prev = p->next = NULL;
+	roff_node_append(mdoc, p);
 }
 
-int
-mdoc_node_relink(struct mdoc *m, struct mdoc_node *p)
-{
-
-	mdoc_node_unlink(m, p);
-	return(node_append(m, p));
-}
-
-#if 0
-/*
- * Pre-treat a text line.
- * Text lines can consist of equations, which must be handled apart from
- * the regular text.
- * Thus, use this function to step through a line checking if it has any
- * equations embedded in it.
- * This must handle multiple equations AND equations that do not end at
- * the end-of-line, i.e., will re-enter in the next roff parse.
- */
-static int
-mdoc_preptext(struct mdoc *m, int line, char *buf, int offs)
-{
-	char		*start, *end;
-	char		 delim;
-
-	while ('\0' != buf[offs]) {
-		/* Mark starting position if eqn is set. */
-		start = NULL;
-		if ('\0' != (delim = roff_eqndelim(m->roff)))
-			if (NULL != (start = strchr(buf + offs, delim)))
-				*start++ = '\0';
-
-		/* Parse text as normal. */
-		if ( ! mdoc_ptext(m, line, buf, offs))
-			return(0);
-
-		/* Continue only if an equation exists. */
-		if (NULL == start)
-			break;
-
-		/* Read past the end of the equation. */
-		offs += start - (buf + offs);
-		assert(start == &buf[offs]);
-		if (NULL != (end = strchr(buf + offs, delim))) {
-			*end++ = '\0';
-			while (' ' == *end)
-				end++;
-		}
-
-		/* Parse the equation itself. */
-		roff_openeqn(m->roff, NULL, line, offs, buf);
-
-		/* Process a finished equation? */
-		if (roff_closeeqn(m->roff))
-			if ( ! mdoc_addeqn(m, roff_eqn(m->roff)))
-				return(0);
-		offs += (end - (buf + offs));
-	} 
-
-	return(1);
-}
-#endif
-
 /*
  * Parse free-form text, that is, a line that does not begin with the
  * control character.
  */
 static int
-mdoc_ptext(struct mdoc *m, int line, char *buf, int offs)
+mdoc_ptext(struct roff_man *mdoc, int line, char *buf, int offs)
 {
+	struct roff_node *n;
+	const char	 *cp, *sp;
 	char		 *c, *ws, *end;
-	struct mdoc_node *n;
-
-	/* No text before an initial macro. */
-
-	if (SEC_NONE == m->lastnamed) {
-		mdoc_pmsg(m, line, offs, MANDOCERR_NOTEXT);
-		return(1);
-	}
 
-	assert(m->last);
-	n = m->last;
+	n = mdoc->last;
 
 	/*
-	 * Divert directly to list processing if we're encountering a
-	 * columnar MDOC_BLOCK with or without a prior MDOC_BLOCK entry
-	 * (a MDOC_BODY means it's already open, in which case we should
-	 * process within its context in the normal way).
+	 * If a column list contains plain text, assume an implicit item
+	 * macro.  This can happen one or more times at the beginning
+	 * of such a list, intermixed with non-It mdoc macros and with
+	 * nodes generated on the roff level, for example by tbl.
 	 */
 
-	if (MDOC_Bl == n->tok && MDOC_BODY == n->type &&
-			LIST_column == n->norm->Bl.type) {
-		/* `Bl' is open without any children. */
-		m->flags |= MDOC_FREECOL;
-		return(mdoc_macro(m, MDOC_It, line, offs, &offs, buf));
-	}
-
-	if (MDOC_It == n->tok && MDOC_BLOCK == n->type &&
-			NULL != n->parent &&
-			MDOC_Bl == n->parent->tok &&
-			LIST_column == n->parent->norm->Bl.type) {
-		/* `Bl' has block-level `It' children. */
-		m->flags |= MDOC_FREECOL;
-		return(mdoc_macro(m, MDOC_It, line, offs, &offs, buf));
+	if ((n->tok == MDOC_Bl && n->type == ROFFT_BODY &&
+	     n->end == ENDBODY_NOT && n->norm->Bl.type == LIST_column) ||
+	    (n->parent != NULL && n->parent->tok == MDOC_Bl &&
+	     n->parent->norm->Bl.type == LIST_column)) {
+		mdoc->flags |= MDOC_FREECOL;
+		mdoc_macro(mdoc, MDOC_It, line, offs, &offs, buf);
+		return 1;
 	}
 
 	/*
@@ -781,7 +225,7 @@ mdoc_ptext(struct mdoc *m, int line, char *buf, int offs)
 			 * Strip trailing tabs in literal context only;
 			 * outside, they affect the next line.
 			 */
-			if (MDOC_LITERAL & m->flags)
+			if (MDOC_LITERAL & mdoc->flags)
 				continue;
 			break;
 		case '\\':
@@ -798,29 +242,43 @@ mdoc_ptext(struct mdoc *m, int line, char *buf, int offs)
 	*end = '\0';
 
 	if (ws)
-		mdoc_pmsg(m, line, (int)(ws-buf), MANDOCERR_EOLNSPACE);
-
-	if ('\0' == buf[offs] && ! (MDOC_LITERAL & m->flags)) {
-		mdoc_pmsg(m, line, (int)(c-buf), MANDOCERR_NOBLANKLN);
-
-		/*
-		 * Insert a `sp' in the case of a blank line.  Technically,
-		 * blank lines aren't allowed, but enough manuals assume this
-		 * behaviour that we want to work around it.
-		 */
-		if ( ! mdoc_elem_alloc(m, line, offs, MDOC_sp, NULL))
-			return(0);
+		mandoc_msg(MANDOCERR_SPACE_EOL, mdoc->parse,
+		    line, (int)(ws-buf), NULL);
 
-		m->next = MDOC_NEXT_SIBLING;
+	/*
+	 * Blank lines are allowed in no-fill mode
+	 * and cancel preceding \c,
+	 * but add a single vertical space elsewhere.
+	 */
 
-		return(mdoc_valid_post(m));
+	if (buf[offs] == '\0' && ! (mdoc->flags & MDOC_LITERAL)) {
+		switch (mdoc->last->type) {
+		case ROFFT_TEXT:
+			sp = mdoc->last->string;
+			cp = end = strchr(sp, '\0') - 2;
+			if (cp < sp || cp[0] != '\\' || cp[1] != 'c')
+				break;
+			while (cp > sp && cp[-1] == '\\')
+				cp--;
+			if ((end - cp) % 2)
+				break;
+			*end = '\0';
+			return 1;
+		default:
+			break;
+		}
+		mandoc_msg(MANDOCERR_FI_BLANK, mdoc->parse,
+		    line, (int)(c - buf), NULL);
+		roff_elem_alloc(mdoc, line, offs, ROFF_sp);
+		mdoc->last->flags |= NODE_VALID | NODE_ENDED;
+		mdoc->next = ROFF_NEXT_SIBLING;
+		return 1;
 	}
 
-	if ( ! mdoc_word_alloc(m, line, offs, buf+offs))
-		return(0);
+	roff_word_alloc(mdoc, line, offs, buf+offs);
 
-	if (MDOC_LITERAL & m->flags)
-		return(1);
+	if (mdoc->flags & MDOC_LITERAL)
+		return 1;
 
 	/*
 	 * End-of-sentence check.  If the last character is an unescaped
@@ -830,127 +288,127 @@ mdoc_ptext(struct mdoc *m, int line, char *buf, int offs)
 
 	assert(buf < end);
 
-	if (mandoc_eos(buf+offs, (size_t)(end-buf-offs), 0))
-		m->last->flags |= MDOC_EOS;
+	if (mandoc_eos(buf+offs, (size_t)(end-buf-offs)))
+		mdoc->last->flags |= NODE_EOS;
 
-	return(1);
-}
+	for (c = buf + offs; c != NULL; c = strchr(c + 1, '.')) {
+		if (c - buf < offs + 2)
+			continue;
+		if (end - c < 3)
+			break;
+		if (c[1] != ' ' ||
+		    isalnum((unsigned char)c[-2]) == 0 ||
+		    isalnum((unsigned char)c[-1]) == 0 ||
+		    (c[-2] == 'n' && c[-1] == 'c') ||
+		    (c[-2] == 'v' && c[-1] == 's'))
+			continue;
+		c += 2;
+		if (*c == ' ')
+			c++;
+		if (*c == ' ')
+			c++;
+		if (isupper((unsigned char)(*c)))
+			mandoc_msg(MANDOCERR_EOS, mdoc->parse,
+			    line, (int)(c - buf), NULL);
+	}
 
+	return 1;
+}
 
 /*
  * Parse a macro line, that is, a line beginning with the control
  * character.
  */
 static int
-mdoc_pmacro(struct mdoc *m, int ln, char *buf, int offs)
+mdoc_pmacro(struct roff_man *mdoc, int ln, char *buf, int offs)
 {
-	enum mdoct	  tok;
-	int		  i, sv;
-	char		  mac[5];
-	struct mdoc_node *n;
-
-	/* Empty post-control lines are ignored. */
+	struct roff_node *n;
+	const char	 *cp;
+	size_t		  sz;
+	enum roff_tok	  tok;
+	int		  sv;
 
-	if ('"' == buf[offs]) {
-		mdoc_pmsg(m, ln, offs, MANDOCERR_BADCOMMENT);
-		return(1);
-	} else if ('\0' == buf[offs])
-		return(1);
+	/* Determine the line macro. */
 
 	sv = offs;
-
-	/* 
-	 * Copy the first word into a nil-terminated buffer.
-	 * Stop copying when a tab, space, or eoln is encountered.
-	 */
-
-	i = 0;
-	while (i < 4 && '\0' != buf[offs] && 
-			' ' != buf[offs] && '\t' != buf[offs])
-		mac[i++] = buf[offs++];
-
-	mac[i] = '\0';
-
-	tok = (i > 1 || i < 4) ? mdoc_hash_find(mac) : MDOC_MAX;
-
-	if (MDOC_MAX == tok) {
-		mandoc_vmsg(MANDOCERR_MACRO, m->parse, 
-				ln, sv, "%s", buf + sv - 1);
-		return(1);
+	tok = TOKEN_NONE;
+	for (sz = 0; sz < 4 && strchr(" \t\\", buf[offs]) == NULL; sz++)
+		offs++;
+	if (sz == 2 || sz == 3)
+		tok = roffhash_find(mdoc->mdocmac, buf + sv, sz);
+	if (tok == TOKEN_NONE) {
+		mandoc_msg(MANDOCERR_MACRO, mdoc->parse,
+		    ln, sv, buf + sv - 1);
+		return 1;
 	}
 
-	/* Disregard the first trailing tab, if applicable. */
+	/* Skip a leading escape sequence or tab. */
 
-	if ('\t' == buf[offs])
+	switch (buf[offs]) {
+	case '\\':
+		cp = buf + offs + 1;
+		mandoc_escape(&cp, NULL, NULL);
+		offs = cp - buf;
+		break;
+	case '\t':
 		offs++;
+		break;
+	default:
+		break;
+	}
 
 	/* Jump to the next non-whitespace word. */
 
-	while (buf[offs] && ' ' == buf[offs])
+	while (buf[offs] == ' ')
 		offs++;
 
-	/* 
+	/*
 	 * Trailing whitespace.  Note that tabs are allowed to be passed
 	 * into the parser as "text", so we only warn about spaces here.
 	 */
 
 	if ('\0' == buf[offs] && ' ' == buf[offs - 1])
-		mdoc_pmsg(m, ln, offs - 1, MANDOCERR_EOLNSPACE);
+		mandoc_msg(MANDOCERR_SPACE_EOL, mdoc->parse,
+		    ln, offs - 1, NULL);
 
 	/*
 	 * If an initial macro or a list invocation, divert directly
 	 * into macro processing.
 	 */
 
-	if (NULL == m->last || MDOC_It == tok || MDOC_El == tok) {
-		if ( ! mdoc_macro(m, tok, ln, sv, &offs, buf)) 
-			goto err;
-		return(1);
-	}
-
-	n = m->last;
-	assert(m->last);
-
-	/*
-	 * If the first macro of a `Bl -column', open an `It' block
-	 * context around the parsed macro.
-	 */
-
-	if (MDOC_Bl == n->tok && MDOC_BODY == n->type &&
-			LIST_column == n->norm->Bl.type) {
-		m->flags |= MDOC_FREECOL;
-		if ( ! mdoc_macro(m, MDOC_It, ln, sv, &sv, buf))
-			goto err;
-		return(1);
+	n = mdoc->last;
+	if (n == NULL || tok == MDOC_It || tok == MDOC_El) {
+		mdoc_macro(mdoc, tok, ln, sv, &offs, buf);
+		return 1;
 	}
 
 	/*
-	 * If we're following a block-level `It' within a `Bl -column'
-	 * context (perhaps opened in the above block or in ptext()),
-	 * then open an `It' block context around the parsed macro.
+	 * If a column list contains a non-It macro, assume an implicit
+	 * item macro.  This can happen one or more times at the
+	 * beginning of such a list, intermixed with text lines and
+	 * with nodes generated on the roff level, for example by tbl.
 	 */
 
-	if (MDOC_It == n->tok && MDOC_BLOCK == n->type &&
-			NULL != n->parent &&
-			MDOC_Bl == n->parent->tok &&
-			LIST_column == n->parent->norm->Bl.type) {
-		m->flags |= MDOC_FREECOL;
-		if ( ! mdoc_macro(m, MDOC_It, ln, sv, &sv, buf)) 
-			goto err;
-		return(1);
+	if ((n->tok == MDOC_Bl && n->type == ROFFT_BODY &&
+	     n->end == ENDBODY_NOT && n->norm->Bl.type == LIST_column) ||
+	    (n->parent != NULL && n->parent->tok == MDOC_Bl &&
+	     n->parent->norm->Bl.type == LIST_column)) {
+		mdoc->flags |= MDOC_FREECOL;
+		mdoc_macro(mdoc, MDOC_It, ln, sv, &sv, buf);
+		return 1;
 	}
 
 	/* Normal processing of a macro. */
 
-	if ( ! mdoc_macro(m, tok, ln, sv, &offs, buf)) 
-		goto err;
+	mdoc_macro(mdoc, tok, ln, sv, &offs, buf);
 
-	return(1);
+	/* In quick mode (for mandocdb), abort after the NAME section. */
 
-err:	/* Error out. */
+	if (mdoc->quick && MDOC_Sh == tok &&
+	    SEC_NAME != mdoc->last->sec)
+		return 2;
 
-	m->flags |= MDOC_HALT;
-	return(0);
+	return 1;
 }
 
 enum mdelim
@@ -958,43 +416,44 @@ mdoc_isdelim(const char *p)
 {
 
 	if ('\0' == p[0])
-		return(DELIM_NONE);
+		return DELIM_NONE;
 
 	if ('\0' == p[1])
 		switch (p[0]) {
-		case('('):
-			/* FALLTHROUGH */
-		case('['):
-			return(DELIM_OPEN);
-		case('|'):
-			return(DELIM_MIDDLE);
-		case('.'):
-			/* FALLTHROUGH */
-		case(','):
-			/* FALLTHROUGH */
-		case(';'):
-			/* FALLTHROUGH */
-		case(':'):
-			/* FALLTHROUGH */
-		case('?'):
-			/* FALLTHROUGH */
-		case('!'):
-			/* FALLTHROUGH */
-		case(')'):
-			/* FALLTHROUGH */
-		case(']'):
-			return(DELIM_CLOSE);
+		case '(':
+		case '[':
+			return DELIM_OPEN;
+		case '|':
+			return DELIM_MIDDLE;
+		case '.':
+		case ',':
+		case ';':
+		case ':':
+		case '?':
+		case '!':
+		case ')':
+		case ']':
+			return DELIM_CLOSE;
 		default:
-			return(DELIM_NONE);
+			return DELIM_NONE;
 		}
 
 	if ('\\' != p[0])
-		return(DELIM_NONE);
+		return DELIM_NONE;
 
 	if (0 == strcmp(p + 1, "."))
-		return(DELIM_CLOSE);
+		return DELIM_CLOSE;
 	if (0 == strcmp(p + 1, "fR|\\fP"))
-		return(DELIM_MIDDLE);
+		return DELIM_MIDDLE;
+
+	return DELIM_NONE;
+}
+
+void
+mdoc_validate(struct roff_man *mdoc)
+{
 
-	return(DELIM_NONE);
+	mdoc->last = mdoc->first;
+	mdoc_node_validate(mdoc);
+	mdoc_state_reset(mdoc);
 }