From 2a1f4f49dcc7a7bd30aff256dadcb0d6081b8cd4 Mon Sep 17 00:00:00 2001
From: Kristaps Dzonsons <kristaps@bsd.lv>
Date: Mon, 19 Jan 2009 23:11:12 +0000
Subject: Bf macro properly supported.

---
 validate.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 48 insertions(+), 2 deletions(-)

diff --git a/validate.c b/validate.c
index 5bc05fcf..31e3c3b9 100644
--- a/validate.c
+++ b/validate.c
@@ -1,4 +1,4 @@
-/* $Id: validate.c,v 1.40 2009/01/19 17:51:33 kristaps Exp $ */
+/* $Id: validate.c,v 1.41 2009/01/19 23:11:12 kristaps Exp $ */
 /*
  * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
  *
@@ -71,6 +71,7 @@ static	int	pre_prologue(struct mdoc *, struct mdoc_node *);
 /* Specific post-child-parse routines. */
 
 static	int	herr_ge1(struct mdoc *);
+static	int	herr_le1(struct mdoc *);
 static	int	hwarn_ge1(struct mdoc *);
 static	int	herr_eq0(struct mdoc *);
 static	int	eerr_eq0(struct mdoc *);
@@ -92,6 +93,7 @@ static	int	post_an(struct mdoc *);
 static	int	post_at(struct mdoc *);
 static	int	post_xr(struct mdoc *);
 static	int	post_nm(struct mdoc *);
+static	int	post_bf(struct mdoc *);
 static	int	post_root(struct mdoc *);
 
 /* Collections of pre-child-parse routines. */
@@ -130,6 +132,7 @@ static	v_post	posts_an[] = { post_an, NULL };
 static	v_post	posts_at[] = { post_at, NULL };
 static	v_post	posts_xr[] = { eerr_ge1, eerr_le2, post_xr, NULL };
 static	v_post	posts_nm[] = { post_nm, NULL };
+static	v_post	posts_bf[] = { herr_le1, post_bf, NULL };
 
 /* Per-macro pre- and post-child-check routine collections. */
 
@@ -193,7 +196,7 @@ const	struct valids mdoc_valids[MDOC_MAX] = {
 	{ NULL, posts_wline }, /* Aq */
 	{ NULL, posts_at }, /* At */ 
 	{ NULL, NULL }, /* Bc */
-	{ NULL, NULL }, /* Bf */  /* FIXME */
+	{ NULL, posts_bf }, /* Bf */  /* FIXME */
 	{ NULL, NULL }, /* Bo */
 	{ NULL, posts_wline }, /* Bq */
 	{ NULL, NULL }, /* Bsx */
@@ -473,6 +476,15 @@ hwarn_ge1(struct mdoc *mdoc)
 }
 
 
+static int
+herr_le1(struct mdoc *mdoc)
+{
+	if (MDOC_HEAD != mdoc->last->type)
+		return(1);
+	return(post_check_children_lt(mdoc, "parameters", 2));
+}
+
+
 static int
 herr_ge1(struct mdoc *mdoc)
 {
@@ -766,6 +778,40 @@ pre_prologue(struct mdoc *mdoc, struct mdoc_node *node)
 }
 
 
+static int
+post_bf(struct mdoc *mdoc)
+{
+	char		 *p;
+	struct mdoc_node *head;
+
+	if (MDOC_BLOCK != mdoc->last->type)
+		return(1);
+	assert(MDOC_Bf == mdoc->last->tok);
+	head = mdoc->last->data.block.head;
+	assert(head);
+
+	if (0 == mdoc->last->data.block.argc) {
+		if (head->child) {
+			assert(MDOC_TEXT == head->child->type);
+			p = head->child->data.text.string;
+			if (xstrcmp(p, "Em"))
+				return(1);
+			else if (xstrcmp(p, "Li"))
+				return(1);
+			else if (xstrcmp(p, "Sm"))
+				return(1);
+			return(mdoc_nerr(mdoc, head->child, "invalid font mode"));
+		}
+		return(mdoc_err(mdoc, "macro expects an argument or parameter"));
+	}
+	if (head->child)
+		return(mdoc_err(mdoc, "macro expects an argument or parameter"));
+	if (1 == mdoc->last->data.block.argc)
+		return(1);
+	return(mdoc_err(mdoc, "macro expects an argument or parameter"));
+}
+
+
 static int
 post_nm(struct mdoc *mdoc)
 {
-- 
cgit v1.2.3-56-ge451