int main(int argc, char **argv) {
if(argc < 2) {
fprintf(stderr, "Please specify the file to parse.\n");
return 1;
}
ast *t;
position p;
const char *err;
if((err = mmap_open(argv[1], &p))) {
fprintf(stderr, "mmap_open failed on file \"%s\": %s\n", argv[1], err);
return 1;
}
t = alloc_ast();
if(!t) {
fprintf(stderr, "alloc_ast could not allocate memory.\n");
mmap_close(&p);
return 1;
}
if((err = start_parser(t, &p))) {
log_err(err, p);
mmap_close(&p);
} else {
mmap_close(&p);
ast_callback(t, argc - 2, argv + 2);
}
delete_ast(t);
}
int parse_hex2(ast *t, position *p){//TODO: Make all builtin parse/read functions that are '<' rules respect the merge_ast rule. Ugh OMG.
position s = *p;
ast *c = alloc_ast();
if(read_string("x", NULL, p) &&
(read_setrange('0', '9', c, p) || read_setrange('a', 'f', c, p) || read_setrange('A', 'F', c, p)) &&
(read_setrange('0', '9', c, p) || read_setrange('a', 'f', c, p) || read_setrange('A', 'F', c, p))){
unsigned x, f;
f = sscanf(c->text, "%2x", &x);
delete_ast(c);
if(!f){
*p = s;
return 0;
}
add_text(t, (char*)&x, 1);
return 1;
}
delete_ast(c);
return 0;
}
void clear_ast(ast *t){
for(size_t i = 0; i < t->size; ++i){
delete_ast(t->children[i]);
}
free(t->children);
t->children = NULL;
t->size = 0;
free((char*)t->text);
t->text = NULL;
t->length = 0;
}
int parse_hex4(ast *t, position *p){
position s = *p;
ast *c = alloc_ast();
if(read_string("X", NULL, p) &&
(read_setrange('0', '9', c, p) || read_setrange('a', 'f', c, p) || read_setrange('A', 'F', c, p)) &&
(read_setrange('0', '9', c, p) || read_setrange('a', 'f', c, p) || read_setrange('A', 'F', c, p)) &&
(read_setrange('0', '9', c, p) || read_setrange('a', 'f', c, p) || read_setrange('A', 'F', c, p)) &&
(read_setrange('0', '9', c, p) || read_setrange('a', 'f', c, p) || read_setrange('A', 'F', c, p))){
unsigned x, f;
f = sscanf(c->text, "%4x", &x);
delete_ast(c);
if(!f){
*p = s;
return 0;
}
add_text(t, (char*)&x, 1);
return 1;
}
delete_ast(c);
return 0;
}
void append_ast(ast *t, ast *c){
if(!t){
delete_ast(c);
return;
}
size_t size = t->size;
ast **tmp = realloc(t->children, (size + 1)*sizeof(ast*));
if(!tmp){
//TODO: Handle error
return;
}
t->children = tmp;
t->children[size] = c;
++t->size;
}
int
delete_task(struct task *self)
{
if (!self)
return -1;
assert(self->refs == 0);
xfree(self->name);
xfree(self->actions);
(void) delete_ast(self->expr, (ast_item_dtor) task_decref);
xfree(self);
return 0;
}
int
delete_ast(ast_t self, ast_item_dtor dtor)
{
int i, status;
if (!self)
return -1;
if (self->item && dtor) {
status = dtor(self->item);
assert(status == 0);
}
for (i = 0; i < AST_MAX_CHILDREN; i++)
delete_ast(self->children[i], dtor);
xfree(self);
return 0;
}
void merge_ast(ast *t, ast *c){
if(!t){
delete_ast(c);
return;
}
if(t->size){
size_t size = t->size + c->size;
void *tmp = realloc(t->children, size*sizeof(ast*));
if(!tmp){
//TODO: Handle error
return;
}
t->children = tmp;
memcpy(t->children + t->size, c->children, c->size*sizeof(ast*));
t->size = size;
free(c->children);
}else{
t->children = c->children;
t->size = c->size;
}
if(t->length){
size_t length = t->length + c->length;
void *tmp = realloc((void*)t->text, length*sizeof(char));
if(!tmp){
t->children = realloc(t->children, t->size*sizeof(ast*));
return;
}
t->text = tmp;
memcpy((void*)t->text + t->length, c->text, c->length*sizeof(char));
t->length = length;
free((char*)c->text);//discard const qualifier
}else{
t->text = c->text;
t->length = c->length;
}
free_ast(c);
}
void delete_mj_new_object(mj_new_object *no)
{
delete_ast((ast *) no->class_id);
jrv_free(&no);
}
void delete_mj_binary_operation(mj_binary_operation *op)
{
delete_ast(op->left_operand);
delete_ast(op->right_operand);
jrv_free(&op);
}