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Print line numbers in scanner errors

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This commit is contained in:
Kristian Høgsberg 2011-04-13 16:50:02 -04:00
parent 06c2ebf6ec
commit a0010d8f82
1 changed files with 33 additions and 38 deletions
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71
wayland/scanner.c
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@ -112,6 +112,8 @@ struct entry {
};
struct parse_context {
const char *filename;
XML_Parser parser;
struct protocol *protocol;
struct interface *interface;
struct message *message;
@ -132,6 +134,14 @@ uppercase_dup(const char *src)
return u;
}
static void
fail(struct parse_context *ctx, const char *msg)
{
fprintf(stderr, "%s:%ld: %s\n",
ctx->filename, XML_GetCurrentLineNumber(ctx->parser), msg);
exit(EXIT_FAILURE);
}
static void
start_element(void *data, const char *element_name, const char **atts)
{
@ -163,23 +173,17 @@ start_element(void *data, const char *element_name, const char **atts)
}
if (strcmp(element_name, "protocol") == 0) {
if (name == NULL) {
fprintf(stderr, "no protocol name given\n");
exit(EXIT_FAILURE);
}
if (name == NULL)
fail(ctx, "no protocol name given");
ctx->protocol->name = strdup(name);
ctx->protocol->uppercase_name = uppercase_dup(name);
} else if (strcmp(element_name, "interface") == 0) {
if (name == NULL) {
fprintf(stderr, "no interface name given\n");
exit(EXIT_FAILURE);
}
if (name == NULL)
fail(ctx, "no interface name given");
if (version == 0) {
fprintf(stderr, "no interface version given\n");
exit(EXIT_FAILURE);
}
if (version == 0)
fail(ctx, "no interface version given");
interface = malloc(sizeof *interface);
interface->name = strdup(name);
@ -193,10 +197,8 @@ start_element(void *data, const char *element_name, const char **atts)
ctx->interface = interface;
} else if (strcmp(element_name, "request") == 0 ||
strcmp(element_name, "event") == 0) {
if (name == NULL) {
fprintf(stderr, "no request name given\n");
exit(EXIT_FAILURE);
}
if (name == NULL)
fail(ctx, "no request name given");
message = malloc(sizeof *message);
message->name = strdup(name);
@ -231,30 +233,23 @@ start_element(void *data, const char *element_name, const char **atts)
else if (strcmp(type, "fd") == 0)
arg->type = FD;
else if (strcmp(type, "new_id") == 0) {
if (interface_name == NULL) {
fprintf(stderr, "no interface name given\n");
exit(EXIT_FAILURE);
}
if (interface_name == NULL)
fail(ctx, "no interface name given");
arg->type = NEW_ID;
arg->interface_name = strdup(interface_name);
} else if (strcmp(type, "object") == 0) {
if (interface_name == NULL) {
fprintf(stderr, "no interface name given\n");
exit(EXIT_FAILURE);
}
if (interface_name == NULL)
fail(ctx, "no interface name given");
arg->type = OBJECT;
arg->interface_name = strdup(interface_name);
} else {
fprintf(stderr, "unknown type: %s\n", type);
exit(EXIT_FAILURE);
fail(ctx, "unknown type");
}
wl_list_insert(ctx->message->arg_list.prev, &arg->link);
} else if (strcmp(element_name, "enum") == 0) {
if (name == NULL) {
fprintf(stderr, "no enum name given\n");
exit(EXIT_FAILURE);
}
if (name == NULL)
fail(ctx, "no enum name given");
enumeration = malloc(sizeof *enumeration);
enumeration->name = strdup(name);
@ -687,7 +682,6 @@ int main(int argc, char *argv[])
{
struct parse_context ctx;
struct protocol protocol;
XML_Parser parser;
int len;
void *buf;
@ -697,26 +691,27 @@ int main(int argc, char *argv[])
wl_list_init(&protocol.interface_list);
ctx.protocol = &protocol;
parser = XML_ParserCreate(NULL);
XML_SetUserData(parser, &ctx);
if (parser == NULL) {
ctx.filename = "<stdin>";
ctx.parser = XML_ParserCreate(NULL);
XML_SetUserData(ctx.parser, &ctx);
if (ctx.parser == NULL) {
fprintf(stderr, "failed to create parser\n");
exit(EXIT_FAILURE);
}
XML_SetElementHandler(parser, start_element, NULL);
XML_SetElementHandler(ctx.parser, start_element, NULL);
do {
buf = XML_GetBuffer(parser, XML_BUFFER_SIZE);
buf = XML_GetBuffer(ctx.parser, XML_BUFFER_SIZE);
len = fread(buf, 1, XML_BUFFER_SIZE, stdin);
if (len < 0) {
fprintf(stderr, "fread: %s\n", strerror(errno));
exit(EXIT_FAILURE);
}
XML_ParseBuffer(parser, len, len == 0);
XML_ParseBuffer(ctx.parser, len, len == 0);
} while (len > 0);
XML_ParserFree(parser);
XML_ParserFree(ctx.parser);
if (strcmp(argv[1], "client-header") == 0) {
emit_header(&protocol, 0);