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Make jq.h usable from C++

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Previously, with clang++:
jq.h:46:37: error: typedef redefinition with different
      types ('struct jq_util_input_state *' vs 'jq_util_input_state')

With g++:
jq.h:46:37: error: conflicting declaration
      ‘typedef struct jq_util_input_state* jq_util_input_state’

This typedef was added to libjq by commit 0d41447 which was
after the 1.4 release, so although it is a public API, this
is not a backcompat break because it has never been in a
release.

Specifying the "*" at all uses of jq_util_input_state is
slightly tedious, but jq_state already works that way, so at
least it will be consistent.
This commit is contained in:
David Tolnay
2015-07-04 14:56:07 -07:00
parent 05899f8b3e
commit 1e5e0c9fe2
3 changed files with 22 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
jq.h
View File

@ -43,15 +43,15 @@ jv jq_get_attr(jq_state *, jv);
* whereas jv string values must be in UTF-8. This way the caller
* doesn't have to perform any codeset conversions.
*/
typedef struct jq_util_input_state *jq_util_input_state;
typedef struct jq_util_input_state jq_util_input_state;
typedef void (*jq_util_msg_cb)(void *, const char *);
jq_util_input_state jq_util_input_init(jq_util_msg_cb, void *);
void jq_util_input_set_parser(jq_util_input_state, jv_parser *, int);
void jq_util_input_free(jq_util_input_state *);
void jq_util_input_add_input(jq_util_input_state, const char *);
int jq_util_input_errors(jq_util_input_state);
jv jq_util_input_next_input(jq_util_input_state);
jq_util_input_state *jq_util_input_init(jq_util_msg_cb, void *);
void jq_util_input_set_parser(jq_util_input_state *, jv_parser *, int);
void jq_util_input_free(jq_util_input_state **);
void jq_util_input_add_input(jq_util_input_state *, const char *);
int jq_util_input_errors(jq_util_input_state *);
jv jq_util_input_next_input(jq_util_input_state *);
jv jq_util_input_next_input_cb(jq_state *, void *);
jv jq_util_input_get_position(jq_state*);
jv jq_util_input_get_current_filename(jq_state*);

2
main.c
View File

@ -207,7 +207,7 @@ int main(int argc, char* argv[]) {
int dumpopts = JV_PRINT_INDENT_FLAGS(2);
const char* program = 0;
jq_util_input_state input_state = jq_util_input_init(NULL, NULL); // XXX add err_cb
jq_util_input_state *input_state = jq_util_input_init(NULL, NULL); // XXX add err_cb
int further_args_are_files = 0;
int jq_flags = 0;

28
util.c
View File

@ -203,12 +203,12 @@ static void fprinter(void *data, const char *fname) {
}
// If parser == NULL -> RAW
jq_util_input_state jq_util_input_init(jq_util_msg_cb err_cb, void *err_cb_data) {
jq_util_input_state *jq_util_input_init(jq_util_msg_cb err_cb, void *err_cb_data) {
if (err_cb == NULL) {
err_cb = fprinter;
err_cb_data = stderr;
}
jq_util_input_state new_state = jv_mem_alloc(sizeof(*new_state));
jq_util_input_state *new_state = jv_mem_alloc(sizeof(*new_state));
memset(new_state, 0, sizeof(*new_state));
new_state->err_cb = err_cb;
new_state->err_cb_data = err_cb_data;
@ -226,7 +226,7 @@ jq_util_input_state jq_util_input_init(jq_util_msg_cb err_cb, void *err_cb_data)
return new_state;
}
void jq_util_input_set_parser(jq_util_input_state state, jv_parser *parser, int slurp) {
void jq_util_input_set_parser(jq_util_input_state *state, jv_parser *parser, int slurp) {
assert(!jv_is_valid(state->slurped));
state->parser = parser;
@ -238,8 +238,8 @@ void jq_util_input_set_parser(jq_util_input_state state, jv_parser *parser, int
state->slurped = jv_invalid();
}
void jq_util_input_free(jq_util_input_state *state) {
jq_util_input_state old_state = *state;
void jq_util_input_free(jq_util_input_state **state) {
jq_util_input_state *old_state = *state;
*state = NULL;
if (old_state == NULL)
return;
@ -254,22 +254,22 @@ void jq_util_input_free(jq_util_input_state *state) {
jv_mem_free(old_state);
}
void jq_util_input_add_input(jq_util_input_state state, const char *fname) {
void jq_util_input_add_input(jq_util_input_state *state, const char *fname) {
state->files = jv_mem_realloc(state->files, (state->nfiles + 1) * sizeof(state->files[0]));
state->files[state->nfiles++] = jv_mem_strdup(fname);
}
int jq_util_input_errors(jq_util_input_state state) {
int jq_util_input_errors(jq_util_input_state *state) {
return state->failures;
}
static const char *next_file(jq_util_input_state state) {
static const char *next_file(jq_util_input_state *state) {
if (state->curr_file < state->nfiles)
return state->files[state->curr_file++];
return NULL;
}
static int jq_util_input_read_more(jq_util_input_state state) {
static int jq_util_input_read_more(jq_util_input_state *state) {
if (!state->current_input || feof(state->current_input) || ferror(state->current_input)) {
if (state->current_input && ferror(state->current_input)) {
// System-level input error on the stream. It will be closed (below).
@ -360,7 +360,7 @@ static int jq_util_input_read_more(jq_util_input_state state) {
}
jv jq_util_input_next_input_cb(jq_state *jq, void *data) {
return jq_util_input_next_input((jq_util_input_state)data);
return jq_util_input_next_input((jq_util_input_state *)data);
}
// Return the current_filename:current_line
@ -371,7 +371,7 @@ jv jq_util_input_get_position(jq_state *jq) {
assert(cb == jq_util_input_next_input_cb);
if (cb != jq_util_input_next_input_cb)
return jv_invalid_with_msg(jv_string("Invalid jq_util_input API usage"));
jq_util_input_state s = (jq_util_input_state)cb_data;
jq_util_input_state *s = (jq_util_input_state *)cb_data;
// We can't assert that current_filename is a string because if
// the error was a JSON parser error then we may not have set
@ -389,7 +389,7 @@ jv jq_util_input_get_current_filename(jq_state* jq) {
jq_get_input_cb(jq, &cb, &cb_data);
if (cb != jq_util_input_next_input_cb)
return jv_invalid_with_msg(jv_string("Unknown input filename"));
jq_util_input_state s = (jq_util_input_state)cb_data;
jq_util_input_state *s = (jq_util_input_state *)cb_data;
jv v = jv_copy(s->current_filename);
return v;
}
@ -400,7 +400,7 @@ jv jq_util_input_get_current_line(jq_state* jq) {
jq_get_input_cb(jq, &cb, &cb_data);
if (cb != jq_util_input_next_input_cb)
return jv_invalid_with_msg(jv_string("Unknown input line number"));
jq_util_input_state s = (jq_util_input_state)cb_data;
jq_util_input_state *s = (jq_util_input_state *)cb_data;
jv v = jv_number(s->current_line);
return v;
}
@ -408,7 +408,7 @@ jv jq_util_input_get_current_line(jq_state* jq) {
// Blocks to read one more input from stdin and/or given files
// When slurping, it returns just one value
jv jq_util_input_next_input(jq_util_input_state state) {
jv jq_util_input_next_input(jq_util_input_state *state) {
int is_last = 0;
jv value = jv_invalid(); // need more input
do {