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doc: generate doxygen html output from the scanner

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This switches the scanner to generate doxygen-compatible tags for the
generated protocol headers, and hooks up the doxygen build to generate server
and client-side API documentation. That documentation is now in
Client/ and Server/, respectively.

GENERATE_HTML is on by default and must be disabled for the xml/man targets to
avoid messing up the new documentation. We disable all three three targets in
the doxyfile (xml and man default to NO anyway) to make it obvious that they
need to be set in the per-target instructions.

Each protocol is a separate doxygen @page, with each interface a @subpage.
Wayland only has one protocol, wayland-protocols will have these nested.
Each protocol page has a list of interfaces and the copyright and description
where available.
All interfaces are grouped by doxygen @defgroup and @ingroups and appear in
"Modules" in the generated output. Each interface subpage has the description
and a link to the actual API doc.
Function, struct and #defines are documented in doxygen style and associated
with the matching interface.

Note that pages and groups have fixed HTML file names and are directly
linkable/bookmark-able.

The @mainpage is a separate file that's included at build time. It doesn't
contain much other than links to where the interesting bits are. It's a static
file though that supports markdown, so we can extend it easily in the future.

For doxygen we need the new options EXTRACT_ALL and OPTIMIZE_OUTPUT_FOR_C so
it scans C code properly. EXTRACT_STATIC is needed since most of the protocol
hooks are static.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
This commit is contained in:
Peter Hutterer 2016-03-01 09:26:21 +10:00 • committed by Bryce Harrington
parent f8f3e54aa7
commit 2b5310a367
4 changed files with 188 additions and 78 deletions
Download patch file Download diff file Expand all files Collapse all files

220
src/scanner.c
View file

@ -876,6 +876,34 @@ character_data(void *data, const XML_Char *s, int len)
ctx->character_data_length += len;
}
static void
format_text_to_comment(const char *text, bool standalone_comment)
{
int bol = 1, start = 0, i, length;
bool comment_started = !standalone_comment;
length = strlen(text);
for (i = 0; i <= length; i++) {
if (bol && (text[i] == ' ' || text[i] == '\t')) {
continue;
} else if (bol) {
bol = 0;
start = i;
}
if (text[i] == '\n' ||
(text[i] == '\0' && !(start == i))) {
printf("%s%s%.*s\n",
comment_started ? " *" : "/*",
i > start ? " " : "",
i - start, text + start);
bol = 1;
comment_started = true;
}
}
if (comment_started && standalone_comment)
printf(" */\n\n");
}
static void
emit_opcodes(struct wl_list *message_list, struct interface *interface)
{
@ -898,9 +926,11 @@ emit_opcode_versions(struct wl_list *message_list, struct interface *interface)
{
struct message *m;
wl_list_for_each(m, message_list, link)
wl_list_for_each(m, message_list, link) {
printf("/**\n * @ingroup iface_%s\n */\n", interface->name);
printf("#define %s_%s_SINCE_VERSION\t%d\n",
interface->uppercase_name, m->uppercase_name, m->since);
}
printf("\n");
}
@ -940,6 +970,7 @@ emit_stubs(struct wl_list *message_list, struct interface *interface)
struct arg *a, *ret;
int has_destructor, has_destroy;
printf("/** @ingroup iface_%s */\n", interface->name);
printf("static inline void\n"
"%s_set_user_data(struct %s *%s, void *user_data)\n"
"{\n"
@ -948,6 +979,7 @@ emit_stubs(struct wl_list *message_list, struct interface *interface)
interface->name, interface->name, interface->name,
interface->name);
printf("/** @ingroup iface_%s */\n", interface->name);
printf("static inline void *\n"
"%s_get_user_data(struct %s *%s)\n"
"{\n"
@ -981,7 +1013,8 @@ emit_stubs(struct wl_list *message_list, struct interface *interface)
exit(EXIT_FAILURE);
}
if (!has_destroy && strcmp(interface->name, "wl_display") != 0)
if (!has_destroy && strcmp(interface->name, "wl_display") != 0) {
printf("/** @ingroup iface_%s */\n", interface->name);
printf("static inline void\n"
"%s_destroy(struct %s *%s)\n"
"{\n"
@ -990,6 +1023,7 @@ emit_stubs(struct wl_list *message_list, struct interface *interface)
"}\n\n",
interface->name, interface->name, interface->name,
interface->name);
}
if (wl_list_empty(message_list))
return;
@ -1009,6 +1043,11 @@ emit_stubs(struct wl_list *message_list, struct interface *interface)
ret = a;
}
printf("/**\n"
" * @ingroup iface_%s\n", interface->name);
if (m->description && m->description->text)
format_text_to_comment(m->description->text, false);
printf(" */\n");
if (ret && ret->interface_name == NULL)
printf("static inline void *\n");
else if (ret)
@ -1104,6 +1143,17 @@ emit_event_wrappers(struct wl_list *message_list, struct interface *interface)
return;
wl_list_for_each(m, message_list, link) {
printf("/**\n"
" * @ingroup iface_%s\n"
" * Sends an %s event to the client owning the resource.\n",
interface->name,
m->name);
printf("* @param resource_ The client's resource\n");
wl_list_for_each(a, &m->arg_list, link) {
if (a->summary)
printf(" * @param %s %s\n", a->name, a->summary);
}
printf(" */\n");
printf("static inline void\n"
"%s_send_%s(struct wl_resource *resource_",
interface->name, m->name);
@ -1150,28 +1200,23 @@ emit_enumerations(struct interface *interface)
if (desc) {
printf("/**\n");
desc_dump(desc->summary,
" * %s_%s - ",
interface->name, e->name);
wl_list_for_each(entry, &e->entry_list, link) {
desc_dump(entry->summary,
" * @%s_%s_%s: ",
interface->uppercase_name,
e->uppercase_name,
entry->uppercase_name);
}
if (desc->text) {
printf(" *\n");
desc_dump(desc->text, " * ");
}
printf(" * @ingroup iface_%s\n", interface->name);
format_text_to_comment(desc->summary, false);
if (desc->text)
format_text_to_comment(desc->text, false);
printf(" */\n");
}
printf("enum %s_%s {\n", interface->name, e->name);
wl_list_for_each(entry, &e->entry_list, link)
wl_list_for_each(entry, &e->entry_list, link) {
if (entry->summary)
printf("\t/**\n"
"\t * %s\n"
"\t */\n", entry->summary);
printf("\t%s_%s_%s = %s,\n",
interface->uppercase_name,
e->uppercase_name,
entry->uppercase_name, entry->value);
}
printf("};\n");
printf("#endif /* %s_%s_ENUM */\n\n",
interface->uppercase_name, e->uppercase_name);
@ -1188,20 +1233,11 @@ emit_structs(struct wl_list *message_list, struct interface *interface, enum sid
if (wl_list_empty(message_list))
return;
if (interface->description) {
struct description *desc = interface->description;
printf("/**\n");
desc_dump(desc->summary, " * %s - ", interface->name);
wl_list_for_each(m, message_list, link) {
struct description *mdesc = m->description;
desc_dump(mdesc ? mdesc->summary : "(none)",
" * @%s: ",
m->name);
}
printf(" *\n");
desc_dump(desc->text, " * ");
printf(" */\n");
}
printf("/**\n");
printf(" * @ingroup iface_%s\n", interface->name);
printf(" * @struct %s_%s\n", interface->name,
(side == SERVER) ? "interface" : "listener");
printf(" */\n");
printf("struct %s_%s {\n", interface->name,
(side == SERVER) ? "interface" : "listener");
@ -1209,24 +1245,24 @@ emit_structs(struct wl_list *message_list, struct interface *interface, enum sid
struct description *mdesc = m->description;
printf("\t/**\n");
desc_dump(mdesc ? mdesc->summary : "(none)",
"\t * %s - ", m->name);
wl_list_for_each(a, &m->arg_list, link) {
if (side == SERVER && a->type == NEW_ID &&
a->interface_name == NULL)
printf("\t * @interface: name of the objects interface\n"
"\t * @version: version of the objects interface\n");
desc_dump(a->summary ? a->summary : "(none)",
"\t * @%s: ", a->name);
}
if (mdesc) {
if (mdesc->summary)
printf("\t * %s\n", mdesc->summary);
printf("\t *\n");
desc_dump(mdesc->text, "\t * ");
}
wl_list_for_each(a, &m->arg_list, link) {
if (side == SERVER && a->type == NEW_ID &&
a->interface_name == NULL)
printf("\t * @param interface name of the objects interface\n"
"\t * @param version version of the objects interface\n");
if (a->summary)
printf("\t * @param %s %s\n", a->name,
a->summary);
}
if (m->since > 1) {
printf("\t * @since: %d\n", m->since);
printf("\t * @since %d\n", m->since);
}
printf("\t */\n");
printf("\tvoid (*%s)(", m->name);
@ -1266,6 +1302,9 @@ emit_structs(struct wl_list *message_list, struct interface *interface, enum sid
printf("};\n\n");
if (side == CLIENT) {
printf("/**\n"
" * @ingroup %s_iface\n"
" */\n", interface->name);
printf("static inline int\n"
"%s_add_listener(struct %s *%s,\n"
"%sconst struct %s_listener *listener, void *data)\n"
@ -1281,34 +1320,6 @@ emit_structs(struct wl_list *message_list, struct interface *interface, enum sid
}
}
static void
format_copyright(const char *copyright)
{
int bol = 1, start = 0, i, length;
bool comment_started = false;
length = strlen(copyright);
for (i = 0; i <= length; i++) {
if (bol && (copyright[i] == ' ' || copyright[i] == '\t')) {
continue;
} else if (bol) {
bol = 0;
start = i;
}
if (copyright[i] == '\n' ||
(copyright[i] == '\0' && !(start == i))) {
printf("%s%s%.*s\n",
comment_started ? " *" : "/*",
i > start ? " " : "",
i - start, copyright + start);
bol = 1;
comment_started = true;
}
}
if (comment_started)
printf(" */\n\n");
}
static void
emit_types_forward_declarations(struct protocol *protocol,
struct wl_list *message_list,
@ -1361,6 +1372,46 @@ get_include_name(bool core, enum side side)
return core ? "wayland-client-core.h" : "wayland-client.h";
}
static void
emit_mainpage_blurb(const struct protocol *protocol, enum side side)
{
struct interface *i;
printf("/**\n"
" * @page page_%s The %s protocol\n",
protocol->name, protocol->name);
if (protocol->description) {
if (protocol->description->summary) {
printf(" * %s\n"
" *\n", protocol->description->summary);
}
if (protocol->description->text) {
printf(" * @section page_desc_%s Description\n", protocol->name);
format_text_to_comment(protocol->description->text, false);
printf(" *\n");
}
}
printf(" * @section page_ifaces_%s Interfaces\n", protocol->name);
wl_list_for_each(i, &protocol->interface_list, link) {
printf(" * - @subpage page_iface_%s - %s\n",
i->name,
i->description && i->description->summary ? i->description->summary : "");
}
if (protocol->copyright) {
printf(" * @section page_copyright_%s Copyright\n",
protocol->name);
printf(" * <pre>\n");
format_text_to_comment(protocol->copyright, false);
printf(" * </pre>\n");
}
printf(" */\n");
}
static void
emit_header(struct protocol *protocol, enum side side)
{
@ -1369,9 +1420,6 @@ emit_header(struct protocol *protocol, enum side side)
const char *s = (side == SERVER) ? "SERVER" : "CLIENT";
char **p, *prev;
if (protocol->copyright)
format_copyright(protocol->copyright);
printf("#ifndef %s_%s_PROTOCOL_H\n"
"#define %s_%s_PROTOCOL_H\n"
"\n"
@ -1388,6 +1436,8 @@ emit_header(struct protocol *protocol, enum side side)
protocol->uppercase_name, s,
get_include_name(protocol->core_headers, side));
emit_mainpage_blurb(protocol, side);
wl_array_init(&types);
wl_list_for_each(i, &protocol->interface_list, link) {
emit_types_forward_declarations(protocol, &i->request_list, &types);
@ -1411,6 +1461,24 @@ emit_header(struct protocol *protocol, enum side side)
printf("\n");
wl_list_for_each(i, &protocol->interface_list, link) {
printf("/**\n"
" * @page page_iface_%s %s\n",
i->name, i->name);
if (i->description && i->description->text) {
printf(" * @section page_iface_%s_desc Description\n",
i->name);
format_text_to_comment(i->description->text, false);
}
printf(" * @section page_iface_%s_api API\n"
" * See @ref iface_%s.\n"
" */\n",
i->name, i->name);
printf("/**\n"
" * @defgroup iface_%s The %s interface\n",
i->name, i->name);
if (i->description && i->description->text)
format_text_to_comment(i->description->text, false);
printf(" */\n");
printf("extern const struct wl_interface "
"%s_interface;\n", i->name);
}
@ -1554,7 +1622,7 @@ emit_code(struct protocol *protocol)
char **p, *prev;
if (protocol->copyright)
format_copyright(protocol->copyright);
format_text_to_comment(protocol->copyright, true);
printf("#include <stdlib.h>\n"
"#include <stdint.h>\n"