Generic roff_layout for layout tokens.

diff --git a/dummy.c b/dummy.c
index 96684baa4327fa47732832a5ff8758257cc1c878..89b8f46b68276c5ba4ff477d5412885820600a80 100644 (file)
--- a/dummy.c
+++ b/dummy.c
@@ -1,4 +1,4 @@
-/* $Id: dummy.c,v 1.3 2008/11/24 14:24:55 kristaps Exp $ */
+/* $Id: dummy.c,v 1.4 2008/11/24 18:32:39 kristaps Exp $ */

 /*
  * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
  *
 /*
  * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
  *


@@ -18,17 +18,91 @@
  */
 #include <assert.h>
 #include <err.h>
  */
 #include <assert.h>
 #include <err.h>

+#include <stdio.h>

 #include <stdlib.h>
 #include <stdlib.h>

+#include <string.h>

 
 #include "libmdocml.h"
 #include "private.h"
 
 
 
 #include "libmdocml.h"
 #include "private.h"
 
 

+static roffin          in[ROFF_MAX];
+static roffout         out[ROFF_MAX];
+static roffblkin       blkin[ROFF_MAX];
+static roffblkout      blkout[ROFF_MAX];
+
+static int             md_dummy_blk_in(int);
+static int             md_dummy_blk_out(int);
+static int             md_dummy_text_in(int, int *, char **);
+static int             md_dummy_text_out(int);
+
+static void            dbg_indent(void);
+
+static int             dbg_lvl = 0;
+

 struct md_dummy {
        struct rofftree *tree;
 };
 
 
 struct md_dummy {
        struct rofftree *tree;
 };
 
 

+static void
+dbg_indent(void)
+{
+       char            buf[128];
+       int             i;
+
+       *buf = 0;
+       assert(dbg_lvl >= 0);
+       for (i = 0; i < dbg_lvl; i++)
+               (void)strncat(buf, "  ", sizeof(buf) - 1);
+
+       (void)printf("%s", buf);
+}
+
+
+static int
+md_dummy_blk_in(int tok)
+{
+
+       dbg_indent();
+       (void)printf("+++blk\n");
+       dbg_lvl++;
+       return(1);
+}
+
+
+static int
+md_dummy_blk_out(int tok)
+{
+
+       assert(dbg_lvl > 0);
+       dbg_lvl--;
+       dbg_indent();
+       (void)printf("---blk\n");
+       return(1);
+}
+
+
+static int
+md_dummy_text_in(int tok, int *argcp, char **argvp)
+{
+
+       dbg_indent();
+       (void)printf("in: text\n");
+       return(1);
+}
+
+
+static int
+md_dummy_text_out(int tok)
+{
+
+       dbg_indent();
+       (void)printf("out: text\n");
+       return(1);
+}
+
+

 int
 md_line_dummy(void *arg, char *buf, size_t sz)
 {
 int
 md_line_dummy(void *arg, char *buf, size_t sz)
 {


@@ -58,13 +132,24 @@ md_init_dummy(const struct md_args *args,
                struct md_mbuf *mbuf, const struct md_rbuf *rbuf)
 {
        struct md_dummy *p;
                struct md_mbuf *mbuf, const struct md_rbuf *rbuf)
 {
        struct md_dummy *p;

+       int              i;
+
+       for (i = 0; i < ROFF_MAX; i++) {
+               in[i] = md_dummy_text_in;
+               out[i] = md_dummy_text_out;
+               blkin[i] = md_dummy_blk_in;
+               blkout[i] = md_dummy_blk_out;
+       }

 
        if (NULL == (p = malloc(sizeof(struct md_dummy)))) {
                warn("malloc");
                return(NULL);
        }
 
 
        if (NULL == (p = malloc(sizeof(struct md_dummy)))) {
                warn("malloc");
                return(NULL);
        }
 

-       if (NULL == (p->tree = roff_alloc(args, mbuf, rbuf))) {
+       p->tree = roff_alloc
+               (args, mbuf, rbuf, in, out, blkin, blkout);
+
+       if (NULL == p->tree) {

                free(p);
                return(NULL);
        }
                free(p);
                return(NULL);
        }

diff --git a/private.h b/private.h
index 72aabe4822ed6d1004f61df72dd0a361b2bdfc4a..310b885c7c2ae6dee1ac4d2b469436d270027d8d 100644 (file)
--- a/private.h
+++ b/private.h
@@ -1,4 +1,4 @@
-/* $Id: private.h,v 1.4 2008/11/24 14:24:55 kristaps Exp $ */
+/* $Id: private.h,v 1.5 2008/11/24 18:32:39 kristaps Exp $ */

 /*
  * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
  *
 /*
  * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
  *


@@ -35,6 +35,26 @@ struct       md_mbuf {
        size_t           pos;
 };
 
        size_t           pos;
 };
 

+#define        ROFF___          0
+#define        ROFF_Dd          1
+#define        ROFF_Dt          2
+#define        ROFF_Os          3
+#define        ROFF_Sh          4
+#define        ROFF_An          5
+#define        ROFF_Li          6
+#define        ROFF_MAX         7
+
+#define        ROFF_Split       0
+#define        ROFF_Nosplit     1
+#define        ROFF_ARGMAX      2
+
+/* FIXME: have a md_roff with all necessary parameters. */
+
+typedef        int     (*roffin)(int, int *, char **);
+typedef        int     (*roffout)(int);
+typedef        int     (*roffblkin)(int);
+typedef        int     (*roffblkout)(int);
+

 __BEGIN_DECLS
 
 typedef        void  (*(*md_init)(const struct md_args *, 
 __BEGIN_DECLS
 
 typedef        void  (*(*md_init)(const struct md_args *, 


@@ -59,7 +79,9 @@ int             md_buf_putstring(struct md_mbuf *, const char *);
 struct rofftree;
 
 struct rofftree *roff_alloc(const struct md_args *, 
 struct rofftree;
 
 struct rofftree *roff_alloc(const struct md_args *, 

-                       struct md_mbuf *, const struct md_rbuf *);
+                       struct md_mbuf *, const struct md_rbuf *,
+                       const roffin *, const roffout *,
+                       const roffblkin *, const roffblkout *);

 int              roff_engine(struct rofftree *, char *, size_t);
 int              roff_free(struct rofftree *, int);
 
 int              roff_engine(struct rofftree *, char *, size_t);
 int              roff_free(struct rofftree *, int);
 

diff --git a/roff.c b/roff.c
index 3e2b765675e29cfb4a47fd2fd4e6ba98b475a297..cd6fc6795c0e20b7c82f7a6522105f02043a52be 100644 (file)
--- a/roff.c
+++ b/roff.c
@@ -1,4 +1,4 @@
-/* $Id: roff.c,v 1.1 2008/11/24 14:24:55 kristaps Exp $ */
+/* $Id: roff.c,v 1.2 2008/11/24 18:32:39 kristaps Exp $ */

 /*
  * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
  *
 /*
  * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
  *


@@ -42,7 +42,8 @@ enum  rofftype {
 };
 
 #define        ROFFCALL_ARGS \
 };
 
 #define        ROFFCALL_ARGS \

-       struct rofftree *tree, const char *argv[], enum roffd type
+       int tok, struct rofftree *tree, \
+       const char *argv[], enum roffd type

 
 struct rofftree;
 
 
 struct rofftree;
 


@@ -85,23 +86,18 @@ struct      rofftree {
 
        const struct md_args    *args;
        const struct md_rbuf    *rbuf;
 
        const struct md_args    *args;
        const struct md_rbuf    *rbuf;

+       const roffin            *roffin;
+       const roffblkin         *roffblkin;
+       const roffout           *roffout;
+       const roffblkout        *roffblkout;

 };
 
 };
 

-#define        ROFF___           0
-#define        ROFF_Dd           1
-#define        ROFF_Dt           2
-#define        ROFF_Os           3
-#define        ROFF_Sh           4
-#define        ROFF_An           5
-#define        ROFF_Li           6
-#define        ROFF_MAX          7
-

 static int               roff_Dd(ROFFCALL_ARGS);
 static int               roff_Dt(ROFFCALL_ARGS);
 static int               roff_Os(ROFFCALL_ARGS);
 static int               roff_Dd(ROFFCALL_ARGS);
 static int               roff_Dt(ROFFCALL_ARGS);
 static int               roff_Os(ROFFCALL_ARGS);

-static int               roff_Sh(ROFFCALL_ARGS);
-static int               roff_An(ROFFCALL_ARGS);
-static int               roff_Li(ROFFCALL_ARGS);
+
+static int               roff_layout(ROFFCALL_ARGS);
+static int               roff_text(ROFFCALL_ARGS);

 
 static struct roffnode  *roffnode_new(int, size_t, 
                                struct rofftree *);
 
 static struct roffnode  *roffnode_new(int, size_t, 
                                struct rofftree *);


@@ -109,29 +105,23 @@ static    void              roffnode_free(int, struct rofftree *);
 
 static int               rofffindtok(const char *);
 static int               rofffindarg(const char *);
 
 static int               rofffindtok(const char *);
 static int               rofffindarg(const char *);

+static int               rofffindcallable(const char *);

 static int               roffargs(int, char *, char **);
 static int               roffparse(struct rofftree *, char *, size_t);
 static int               textparse(const struct rofftree *,
                                const char *, size_t);
 
 static int               roffargs(int, char *, char **);
 static int               roffparse(struct rofftree *, char *, size_t);
 static int               textparse(const struct rofftree *,
                                const char *, size_t);
 

-static void              dbg_enter(const struct md_args *, int);
-static void              dbg_leave(const struct md_args *, int);
-

 
 static const struct rofftok tokens[ROFF_MAX] = {
        { "\\\"",    NULL, ROFF_COMMENT, 0 },
        {   "Dd", roff_Dd, ROFF_TITLE, 0 },
        {   "Dt", roff_Dt, ROFF_TITLE, 0 },
        {   "Os", roff_Os, ROFF_TITLE, 0 },
 
 static const struct rofftok tokens[ROFF_MAX] = {
        { "\\\"",    NULL, ROFF_COMMENT, 0 },
        {   "Dd", roff_Dd, ROFF_TITLE, 0 },
        {   "Dt", roff_Dt, ROFF_TITLE, 0 },
        {   "Os", roff_Os, ROFF_TITLE, 0 },

-       {   "Sh", roff_Sh, ROFF_LAYOUT, 0 },
-       {   "An", roff_An, ROFF_TEXT, ROFF_PARSED },
-       {   "Li", roff_Li, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE },
+       {   "Sh", roff_layout, ROFF_LAYOUT, ROFF_PARSED },
+       {   "An", roff_text, ROFF_TEXT, ROFF_PARSED },
+       {   "Li", roff_text, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE },

 };
 
 };
 

-#define        ROFF_Split        0
-#define        ROFF_Nosplit      1
-#define        ROFF_ARGMAX       2
-

 static const struct roffarg tokenargs[ROFF_ARGMAX] = {
        {  "split",     0 },
        {  "nosplit",   0 },
 static const struct roffarg tokenargs[ROFF_ARGMAX] = {
        {  "split",     0 },
        {  "nosplit",   0 },


@@ -150,7 +140,7 @@ roff_free(struct rofftree *tree, int flush)
        /* LINTED */
        while (tree->last)
                if ( ! (*tokens[tree->last->tok].cb)
        /* LINTED */
        while (tree->last)
                if ( ! (*tokens[tree->last->tok].cb)

-                               (tree, NULL, ROFF_EXIT))
+                               (tree->last->tok, tree, NULL, ROFF_EXIT))

                        /* Disallow flushing. */
                        tree->mbuf = NULL;
 
                        /* Disallow flushing. */
                        tree->mbuf = NULL;
 


@@ -169,7 +159,10 @@ roff_free(struct rofftree *tree, int flush)
 
 struct rofftree *
 roff_alloc(const struct md_args *args, struct md_mbuf *out, 
 
 struct rofftree *
 roff_alloc(const struct md_args *args, struct md_mbuf *out, 

-               const struct md_rbuf *in)
+               const struct md_rbuf *in,
+               const roffin *roffin, const roffout *roffout,
+               const roffblkin *roffblkin, 
+               const roffblkout *roffblkout)

 {
        struct rofftree *tree;
 
 {
        struct rofftree *tree;
 


@@ -182,6 +175,10 @@ roff_alloc(const struct md_args *args, struct md_mbuf *out,
        tree->args = args;
        tree->mbuf = out;
        tree->rbuf = in;
        tree->args = args;
        tree->mbuf = out;
        tree->rbuf = in;

+       tree->roffin = roffin;
+       tree->roffout = roffout;
+       tree->roffblkin = roffblkin;
+       tree->roffblkout = roffblkout;

 
        return(tree);
 }
 
        return(tree);
 }


@@ -370,7 +367,7 @@ roffparse(struct rofftree *tree, char *buf, size_t sz)
                do {
                        t = tree->last->tok;
                        if ( ! (*tokens[tree->last->tok].cb)
                do {
                        t = tree->last->tok;
                        if ( ! (*tokens[tree->last->tok].cb)

-                                       (tree, NULL, ROFF_EXIT))
+                                       (tree->last->tok, tree, NULL, ROFF_EXIT))

                                return(0);
                } while (t != tok);
        }
                                return(0);
                } while (t != tok);
        }


@@ -378,7 +375,7 @@ roffparse(struct rofftree *tree, char *buf, size_t sz)
        /* Proceed with actual token processing. */
 
        argvp = (const char **)&argv[1];
        /* Proceed with actual token processing. */
 
        argvp = (const char **)&argv[1];

-       return((*tokens[tok].cb)(tree, argvp, ROFF_ENTER));
+       return((*tokens[tok].cb)(tok, tree, argvp, ROFF_ENTER));

 }
 
 
 }
 
 


@@ -416,6 +413,17 @@ rofffindtok(const char *name)
 }
 
 
 }
 
 

+static int
+rofffindcallable(const char *name)
+{
+       int              c;
+
+       if (ROFF_MAX == (c = rofffindtok(name)))
+               return(ROFF_MAX);
+       return(ROFF_CALLABLE & tokens[c].flags ? c : ROFF_MAX);
+}
+
+

 /* FIXME: accept only struct rofftree *. */
 static struct roffnode *
 roffnode_new(int tokid, size_t line, struct rofftree *tree)
 /* FIXME: accept only struct rofftree *. */
 static struct roffnode *
 roffnode_new(int tokid, size_t line, struct rofftree *tree)


@@ -449,70 +457,12 @@ roffnode_free(int tokid, struct rofftree *tree)
 }
 
 
 }
 
 

-static int dbg_lvl = 0;
-
-
-static void
-dbg_enter(const struct md_args *args, int tokid)
-{
-       int              i;
-       static char      buf[72];
-
-       assert(args);
-       if ( ! (args->dbg & MD_DBG_TREE))
-               return;
-       assert(tokid >= 0 && tokid <= ROFF_MAX);
-
-       buf[0] = buf[71] = 0;
-
-       switch (tokens[tokid].type) {
-       case (ROFF_LAYOUT):
-               (void)strncat(buf, "[body-layout] ", sizeof(buf) - 1);
-               break;
-       case (ROFF_TEXT):
-               (void)strncat(buf, "[  body-text] ", sizeof(buf) - 1);
-               break;
-       case (ROFF_TITLE):
-               (void)strncat(buf, "[    prelude] ", sizeof(buf) - 1);
-               break;
-       default:
-               abort();
-       }
-
-       /* LINTED */
-       for (i = 0; i < dbg_lvl; i++)
-               (void)strncat(buf, "  ", sizeof(buf) - 1);
-
-       (void)strncat(buf, tokens[tokid].name, sizeof(buf) - 1);
-
-       (void)printf("%s\n", buf);
-
-       dbg_lvl++;
-}
-
-
-/* FIXME: accept only struct rofftree *. */
-static void
-dbg_leave(const struct md_args *args, int tokid)
-{
-       assert(args);
-       if ( ! (args->dbg & MD_DBG_TREE))
-               return;
-
-       assert(tokid >= 0 && tokid <= ROFF_MAX);
-       assert(dbg_lvl > 0);
-       dbg_lvl--;
-}
-
-

 /* FIXME: accept only struct rofftree *. */
 /* ARGSUSED */
 static int
 roff_Dd(ROFFCALL_ARGS)
 {
 
 /* FIXME: accept only struct rofftree *. */
 /* ARGSUSED */
 static int
 roff_Dd(ROFFCALL_ARGS)
 {
 

-       dbg_enter(tree->args, ROFF_Dd);
-

        assert(ROFF_PRELUDE & tree->state);
        if (ROFF_PRELUDE_Dt & tree->state ||
                        ROFF_PRELUDE_Dd & tree->state) {
        assert(ROFF_PRELUDE & tree->state);
        if (ROFF_PRELUDE_Dt & tree->state ||
                        ROFF_PRELUDE_Dd & tree->state) {


@@ -524,8 +474,6 @@ roff_Dd(ROFFCALL_ARGS)
        assert(NULL == tree->last);
        tree->state |= ROFF_PRELUDE_Dd;
 
        assert(NULL == tree->last);
        tree->state |= ROFF_PRELUDE_Dd;
 

-       dbg_leave(tree->args, ROFF_Dd);
-

        return(1);
 }
 
        return(1);
 }
 


@@ -535,8 +483,6 @@ static      int
 roff_Dt(ROFFCALL_ARGS)
 {
 
 roff_Dt(ROFFCALL_ARGS)
 {
 

-       dbg_enter(tree->args, ROFF_Dt);
-

        assert(ROFF_PRELUDE & tree->state);
        if ( ! (ROFF_PRELUDE_Dd & tree->state) ||
                        (ROFF_PRELUDE_Dt & tree->state)) {
        assert(ROFF_PRELUDE & tree->state);
        if ( ! (ROFF_PRELUDE_Dd & tree->state) ||
                        (ROFF_PRELUDE_Dt & tree->state)) {


@@ -548,8 +494,6 @@ roff_Dt(ROFFCALL_ARGS)
        assert(NULL == tree->last);
        tree->state |= ROFF_PRELUDE_Dt;
 
        assert(NULL == tree->last);
        tree->state |= ROFF_PRELUDE_Dt;
 

-       dbg_leave(tree->args, ROFF_Dt);
-

        return(1);
 }
 
        return(1);
 }
 


@@ -561,12 +505,9 @@ roff_Os(ROFFCALL_ARGS)
 
        if (ROFF_EXIT == type) {
                roffnode_free(ROFF_Os, tree);
 
        if (ROFF_EXIT == type) {
                roffnode_free(ROFF_Os, tree);

-               dbg_leave(tree->args, ROFF_Os);

                return(1);
        } 
 
                return(1);
        } 
 

-       dbg_enter(tree->args, ROFF_Os);
-

        assert(ROFF_PRELUDE & tree->state);
        if ( ! (ROFF_PRELUDE_Dt & tree->state) ||
                        ! (ROFF_PRELUDE_Dd & tree->state)) {
        assert(ROFF_PRELUDE & tree->state);
        if ( ! (ROFF_PRELUDE_Dt & tree->state) ||
                        ! (ROFF_PRELUDE_Dd & tree->state)) {


@@ -587,38 +528,7 @@ roff_Os(ROFFCALL_ARGS)
 }
 
 
 }
 
 

-/* ARGSUSED */
-static int
-roff_Sh(ROFFCALL_ARGS)
-{
-
-       if (ROFF_EXIT == type) {
-               roffnode_free(ROFF_Sh, tree);
-               dbg_leave(tree->args, ROFF_Sh);
-               return(1);
-       } 
-
-       dbg_enter(tree->args, ROFF_Sh);
-
-       if (NULL == roffnode_new(ROFF_Sh, tree->rbuf->line, tree))
-               return(0);
-
-       return(1);
-}
-
-
-/* ARGSUSED */
-static int
-roff_Li(ROFFCALL_ARGS) 
-{
-
-       dbg_enter(tree->args, ROFF_Li);
-       dbg_leave(tree->args, ROFF_Li);
-
-       return(1);
-}
-
-
+/* ARGUSED */

 static int
 roffnextopt(const char ***in, char **val)
 {
 static int
 roffnextopt(const char ***in, char **val)
 {


@@ -648,54 +558,101 @@ roffnextopt(const char ***in, char **val)
 
 /* ARGSUSED */
 static int
 
 /* ARGSUSED */
 static int

-roff_An(ROFFCALL_ARGS) 
+roff_layout(ROFFCALL_ARGS) 

 {
 {

-       int              c;
-       char            *val;
+       int              i, c, argcp[ROFF_MAXARG];
+       char            *v, *argvp[ROFF_MAXARG];

 
 

-       dbg_enter(tree->args, ROFF_An);
+       if (ROFF_EXIT == type) {
+               roffnode_free(tok, tree);
+               return((*tree->roffblkout[tok])(tok));
+       } 

 
 

-       while (-1 != (c = roffnextopt(&argv, &val))) {
-               switch (c) {
-               case (ROFF_Split):
-                       /* Process argument. */
-                       break;
-               case (ROFF_Nosplit):
-                       /* Process argument. */
-                       break;
-               default:
-                       warnx("%s: error parsing `An' args (line %zu)", 
+       i = 0;
+       while (-1 != (c = roffnextopt(&argv, &v))) {
+               if (ROFF_ARGMAX == c) {
+                       warnx("%s: error parsing `%s' args (line %zu)", 

                                        tree->rbuf->name, 
                                        tree->rbuf->name, 

+                                       tokens[tok].name,

                                        tree->rbuf->line);
                        return(0);
                }
                                        tree->rbuf->line);
                        return(0);
                }

+               argcp[i] = c;
+               argvp[i] = v;

                argv++;
        }
 
                argv++;
        }
 

-       /* Print header. */
-  
+       if (NULL == roffnode_new(tok, tree->rbuf->line, tree))
+               return(0);
+
+       if ( ! (*tree->roffin[tok])(tok, argcp, argvp))
+               return(0);
+
+       if ( ! (ROFF_PARSED & tokens[tok].flags)) {
+               /* TODO: print all tokens. */
+
+               if ( ! ((*tree->roffout[tok])(tok)))
+                       return(0);
+               return((*tree->roffblkin[tok])(tok));
+       }
+

        while (*argv) {
        while (*argv) {

-               if (/* is_parsable && */ 2 >= strlen(*argv)) {
-                       if (ROFF_MAX != (c = rofffindtok(*argv))) {
-                               if (ROFF_CALLABLE & tokens[c].flags) {
-                                       /* Call to token. */
-                                       if ( ! (*tokens[c].cb)(tree, (const char **)argv + 1, ROFF_ENTER))
-                                               return(0);
-                               } 
-                               /* Print token. */
-                       } else {
-                               /* Print token. */
-                       }
-               } else {
-                       /* Print token. */
+               if (2 >= strlen(*argv) && ROFF_MAX != 
+                               (c = rofffindcallable(*argv)))
+                       if ( ! (*tokens[c].cb)(c, tree, 
+                                               argv + 1, ROFF_ENTER))
+                               return(0);
+
+               /* TODO: print token. */
+               argv++;
+       }
+
+       if ( ! ((*tree->roffout[tok])(tok)))
+               return(0);
+
+       return((*tree->roffblkin[tok])(tok));
+}
+
+
+/* ARGSUSED */
+static int
+roff_text(ROFFCALL_ARGS) 
+{
+       int              i, c, argcp[ROFF_MAXARG];
+       char            *v, *argvp[ROFF_MAXARG];
+
+       i = 0;
+       while (-1 != (c = roffnextopt(&argv, &v))) {
+               if (ROFF_ARGMAX == c) {
+                       warnx("%s: error parsing `%s' args (line %zu)", 
+                                       tree->rbuf->name, 
+                                       tokens[tok].name,
+                                       tree->rbuf->line);
+                       return(0);

                }
                }

+               argcp[i] = c;
+               argvp[i] = v;

                argv++;
        }
 
                argv++;
        }
 

-       /* Print footer. */
+       if ( ! (*tree->roffin[tok])(tok, argcp, argvp))
+               return(0);

 
 

-       dbg_leave(tree->args, ROFF_An);
+       if ( ! (ROFF_PARSED & tokens[tok].flags)) {
+               /* TODO: print all tokens. */
+               return((*tree->roffout[tok])(tok));
+       }

 
 

-       return(1);
-}
+       while (*argv) {
+               if (2 >= strlen(*argv) && ROFF_MAX != 
+                               (c = rofffindcallable(*argv)))
+                       if ( ! (*tokens[c].cb)(c, tree, 
+                                               argv + 1, ROFF_ENTER))
+                               return(0);
+
+               /* TODO: print token. */
+               argv++;
+       }

 
 

+       return((*tree->roffout[tok])(tok));
+}