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synced 2025-11-01 22:58:40 -04:00
Generate client side marshal stubs from protocol spec
This commit is contained in:
Kristian Høgsberg
parent
5fcd0aa58e
commit
3862e43779
5 changed files with 165 additions and 180 deletions
167
scanner.c
167
scanner.c
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@ -88,7 +88,7 @@ enum arg_type {
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struct arg {
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char *name;
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enum arg_type type;
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char *object_name;
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char *interface_name;
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struct wl_list link;
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};
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@ -119,12 +119,13 @@ start_element(void *data, const char *element_name, const char **atts)
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struct interface *interface;
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struct message *message;
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struct arg *arg;
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const char *name, *type;
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const char *name, *type, *interface_name;
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int i, version;
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name = 0;
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type = 0;
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name = NULL;
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type = NULL;
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version = 0;
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interface_name = NULL;
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for (i = 0; atts[i]; i += 2) {
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if (strcmp(atts[i], "name") == 0)
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name = atts[i + 1];
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@ -132,6 +133,8 @@ start_element(void *data, const char *element_name, const char **atts)
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version = atoi(atts[i + 1]);
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if (strcmp(atts[i], "type") == 0)
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type = atts[i + 1];
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if (strcmp(atts[i], "interface") == 0)
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interface_name = atts[i + 1];
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}
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if (strcmp(element_name, "interface") == 0) {
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@ -178,9 +181,7 @@ start_element(void *data, const char *element_name, const char **atts)
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arg = malloc(sizeof *arg);
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arg->name = strdup(name);
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if (strcmp(type, "new_id") == 0)
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arg->type = NEW_ID;
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else if (strcmp(type, "int") == 0)
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if (strcmp(type, "int") == 0)
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arg->type = INT;
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else if (strcmp(type, "uint") == 0)
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arg->type = UNSIGNED;
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@ -188,9 +189,23 @@ start_element(void *data, const char *element_name, const char **atts)
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arg->type = STRING;
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else if (strcmp(type, "array") == 0)
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arg->type = ARRAY;
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else {
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else if (strcmp(type, "new_id") == 0) {
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if (interface_name == NULL) {
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fprintf(stderr, "no interface name given\n");
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exit(EXIT_FAILURE);
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}
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arg->type = NEW_ID;
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arg->interface_name = strdup(interface_name);
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} else if (strcmp(type, "object") == 0) {
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if (interface_name == NULL) {
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fprintf(stderr, "no interface name given\n");
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exit(EXIT_FAILURE);
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}
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arg->type = OBJECT;
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arg->object_name = strdup(type);
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arg->interface_name = strdup(interface_name);
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} else {
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fprintf(stderr, "unknown type: %s\n", type);
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exit(EXIT_FAILURE);
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}
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wl_list_insert(ctx->message->arg_list.prev,
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@ -215,6 +230,96 @@ emit_opcodes(struct wl_list *message_list, struct interface *interface)
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printf("\n");
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}
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static void
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emit_type(struct arg *a)
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{
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switch (a->type) {
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default:
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case INT:
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printf("int32_t ");
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break;
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case NEW_ID:
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case UNSIGNED:
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printf("uint32_t ");
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break;
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case STRING:
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printf("const char *");
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break;
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case OBJECT:
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printf("struct wl_%s *", a->interface_name);
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break;
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case ARRAY:
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printf("struct wl_array *");
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break;
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}
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}
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static void
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emit_stubs(struct wl_list *message_list, struct interface *interface)
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{
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struct message *m;
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struct arg *a, *ret;
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if (wl_list_empty(message_list))
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return;
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wl_list_for_each(m, message_list, link) {
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ret = NULL;
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wl_list_for_each(a, &m->arg_list, link) {
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if (a->type == NEW_ID)
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ret = a;
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}
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if (ret)
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printf("static inline struct wl_%s *\n",
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ret->interface_name);
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else
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printf("static inline void\n");
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printf("wl_%s_%s(struct wl_%s *%s",
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interface->name, m->name,
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interface->name, interface->name);
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wl_list_for_each(a, &m->arg_list, link) {
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if (a->type == NEW_ID)
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continue;
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printf(", ");
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emit_type(a);
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printf("%s", a->name);
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}
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printf(")\n"
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"{\n");
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if (ret)
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printf("\tstruct wl_proxy *%s;\n\n"
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"\t%s = wl_proxy_create("
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"(struct wl_proxy *) %s, &wl_%s_interface);\n"
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"\tif (!%s)\n"
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"\t\treturn NULL;\n\n",
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ret->name,
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ret->name,
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interface->name, ret->interface_name,
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ret->name);
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printf("\twl_proxy_marshal((struct wl_proxy *) %s, WL_%s_%s",
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interface->name,
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interface->uppercase_name,
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m->uppercase_name);
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wl_list_for_each(a, &m->arg_list, link) {
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printf(", ");
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printf("%s", a->name);
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}
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printf(");\n");
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if (ret)
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printf("\n\treturn (struct wl_%s *) %s;\n",
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ret->interface_name, ret->name);
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printf("}\n\n");
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}
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}
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static void
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emit_structs(struct wl_list *message_list, struct interface *interface)
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{
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@ -222,6 +327,9 @@ emit_structs(struct wl_list *message_list, struct interface *interface)
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struct arg *a;
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int is_interface;
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if (wl_list_empty(message_list))
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return;
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is_interface = message_list == &interface->request_list;
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printf("struct wl_%s_%s {\n", interface->name,
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is_interface ? "interface" : "listener");
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@ -241,25 +349,7 @@ emit_structs(struct wl_list *message_list, struct interface *interface)
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printf(", ");
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wl_list_for_each(a, &m->arg_list, link) {
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switch (a->type) {
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default:
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case INT:
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printf("int32_t ");
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break;
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case NEW_ID:
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case UNSIGNED:
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printf("uint32_t ");
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break;
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case STRING:
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printf("const char *");
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break;
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case OBJECT:
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printf("struct wl_%s *", a->object_name);
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break;
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case ARRAY:
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printf("struct wl_array *");
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break;
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}
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emit_type(a);
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printf("%s%s",
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a->name,
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a->link.next == &m->arg_list ? "" : ", ");
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@ -292,6 +382,22 @@ emit_header(struct protocol *protocol, int server)
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printf("struct wl_%s;\n", i->name);
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printf("\n");
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if (!server)
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printf("struct wl_proxy;\n\n"
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"extern void\n"
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"wl_proxy_marshal(struct wl_proxy *p, "
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"uint32_t opcode, ...);\n"
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"extern struct wl_proxy *\n"
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"wl_proxy_create(struct wl_proxy *factory, "
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"const struct wl_interface *interface);\n\n");
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wl_list_for_each(i, &protocol->interface_list, link) {
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printf("extern const struct wl_interface "
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"wl_%s_interface;\n",
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i->name);
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}
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printf("\n");
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wl_list_for_each(i, &protocol->interface_list, link) {
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if (server) {
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@ -300,11 +406,8 @@ emit_header(struct protocol *protocol, int server)
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} else {
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emit_structs(&i->event_list, i);
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emit_opcodes(&i->request_list, i);
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emit_stubs(&i->request_list, i);
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}
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printf("extern const struct wl_interface "
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"wl_%s_interface;\n\n",
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i->name);
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}
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printf("#ifdef __cplusplus\n"
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