void
CFCParcel_read_host_data_json(CFCParcel *self, const char *host_lang) {
const char *source_dir = CFCParcel_get_source_dir(self);
char *path = CFCUtil_sprintf("%s" CHY_DIR_SEP "parcel_%s.json", source_dir,
host_lang);
size_t len;
char *json = CFCUtil_slurp_text(path, &len);
CFCJson *extra_data = CFCJson_parse(json);
if (!extra_data) {
CFCUtil_die("Invalid JSON in file '%s'", path);
}
CFCJson *host_module_json
= CFCJson_find_hash_elem(extra_data, "host_module");
if (host_module_json) {
const char *name = CFCJson_get_string(host_module_json);
CFCParcel_set_host_module_name(self, name);
}
CFCJson *class_hash = CFCJson_find_hash_elem(extra_data, "classes");
if (class_hash) {
CFCJson **children = CFCJson_get_children(class_hash);
for (int i = 0; children[i]; i += 2) {
const char *class_name = CFCJson_get_string(children[i]);
CFCClass *klass = CFCParcel_class(self, class_name);
if (!klass) {
CFCUtil_die("Class '%s' in '%s' not found", class_name, path);
}
CFCClass_read_host_data_json(klass, children[i+1], path);
}
}
CFCJson_destroy(extra_data);
FREEMEM(json);
FREEMEM(path);
}
void
CFCPerl_write_bindings(CFCPerl *self, const char *boot_class,
CFCParcel **parcels) {
CFCUTIL_NULL_CHECK(boot_class);
CFCUTIL_NULL_CHECK(parcels);
CFCClass **ordered = CFCHierarchy_ordered_classes(self->hierarchy);
CFCPerlClass **registry = CFCPerlClass_registry();
char *privacy_syms = CFCUtil_strdup("");
char *includes = CFCUtil_strdup("");
char *generated_xs = CFCUtil_strdup("");
char *class_specs = CFCUtil_strdup("");
char *xsub_specs = CFCUtil_strdup("");
char *bootstrap_calls = CFCUtil_strdup("");
char *hand_rolled_xs = CFCUtil_strdup("");
for (size_t i = 0; parcels[i]; ++i) {
CFCParcel *parcel = parcels[i];
// Set host_module_name for parcel.
if (!CFCParcel_included(parcel) && CFCParcel_is_installed(parcel)) {
CFCParcel_set_host_module_name(parcel, boot_class);
}
// Bake the parcel privacy defines into the XS, so it can be compiled
// without any extra compiler flags.
const char *privacy_sym = CFCParcel_get_privacy_sym(parcel);
privacy_syms = CFCUtil_cat(privacy_syms, "#define ", privacy_sym,
"\n", NULL);
// Bootstrap calls.
const char *prefix = CFCParcel_get_prefix(parcel);
includes = CFCUtil_cat(includes, "#include \"", prefix, "perl.h\"\n",
NULL);
bootstrap_calls = CFCUtil_cat(bootstrap_calls, " ", prefix,
"bootstrap_perl();\n", NULL);
}
for (size_t i = 0; ordered[i] != NULL; i++) {
CFCClass *klass = ordered[i];
CFCParcel *parcel = CFCClass_get_parcel(klass);
int found = false;
for (size_t j = 0; parcels[j]; j++) {
if (parcel == parcels[j]) {
found = true;
break;
}
}
if (!found) { continue; }
// Pound-includes for generated headers.
const char *include_h = CFCClass_include_h(klass);
includes = CFCUtil_cat(includes, "#include \"", include_h, "\"\n",
NULL);
if (CFCClass_inert(klass)) { continue; }
int num_xsubs = 0;
// Constructors.
CFCPerlConstructor **constructors
= CFCPerlClass_constructor_bindings(klass);
for (size_t j = 0; constructors[j] != NULL; j++) {
CFCPerlSub *xsub = (CFCPerlSub*)constructors[j];
// Add the XSUB function definition.
char *xsub_def
= CFCPerlConstructor_xsub_def(constructors[j], klass);
generated_xs = CFCUtil_cat(generated_xs, xsub_def, "\n",
NULL);
FREEMEM(xsub_def);
// Add XSUB initialization at boot.
xsub_specs = S_add_xsub_spec(xsub_specs, xsub);
num_xsubs += 1;
CFCBase_decref((CFCBase*)constructors[j]);
}
FREEMEM(constructors);
// Methods.
CFCPerlMethod **methods = CFCPerlClass_method_bindings(klass);
for (size_t j = 0; methods[j] != NULL; j++) {
CFCPerlSub *xsub = (CFCPerlSub*)methods[j];
// Add the XSUB function definition.
char *xsub_def = CFCPerlMethod_xsub_def(methods[j], klass);
generated_xs = CFCUtil_cat(generated_xs, xsub_def, "\n",
NULL);
FREEMEM(xsub_def);
// Add XSUB initialization at boot.
xsub_specs = S_add_xsub_spec(xsub_specs, xsub);
num_xsubs += 1;
CFCBase_decref((CFCBase*)methods[j]);
}
FREEMEM(methods);
// Append XSBind_ClassSpec entry.
const char *class_name = CFCClass_get_name(klass);
CFCClass *parent = CFCClass_get_parent(klass);
char *parent_name;
if (parent) {
parent_name = CFCUtil_sprintf("\"%s\"", CFCClass_get_name(parent));
}
else {
parent_name = CFCUtil_strdup("NULL");
}
char *class_spec = CFCUtil_sprintf("{ \"%s\", %s, %d }", class_name,
parent_name, num_xsubs);
const char *sep = class_specs[0] == '\0' ? "" : ",\n";
class_specs = CFCUtil_cat(class_specs, sep, " ", class_spec,
NULL);
FREEMEM(class_spec);
FREEMEM(parent_name);
}
// Hand-rolled XS.
for (size_t i = 0; registry[i] != NULL; i++) {
CFCPerlClass *perl_class = registry[i];
CFCParcel *parcel = CFCPerlClass_get_parcel(perl_class);
int found = false;
for (size_t j = 0; parcels[j]; j++) {
if (parcel == parcels[j]) {
found = true;
break;
}
}
if (!found) { continue; }
const char *xs = CFCPerlClass_get_xs_code(perl_class);
hand_rolled_xs = CFCUtil_cat(hand_rolled_xs, xs, "\n", NULL);
}
const char pattern[] =
"%s" // Header.
"\n"
"%s" // Privacy syms.
"\n"
"#include \"XSBind.h\"\n"
"%s" // Includes.
"\n"
"#ifndef XS_INTERNAL\n"
" #define XS_INTERNAL XS\n"
"#endif\n"
"\n"
"%s" // Generated XS.
"\n"
"MODULE = %s PACKAGE = %s\n" // Boot class.
"\n"
"BOOT:\n"
"{\n"
" static const cfish_XSBind_ClassSpec class_specs[] = {\n"
"%s\n" // Class specs.
" };\n"
" static const cfish_XSBind_XSubSpec xsub_specs[] = {\n"
"%s\n" // XSUB specs.
" };\n"
" size_t num_classes\n"
" = sizeof(class_specs) / sizeof(class_specs[0]);\n"
" const char* file = __FILE__;\n"
"\n"
"%s" // Bootstrap calls.
"\n"
" cfish_XSBind_bootstrap(aTHX_ num_classes, class_specs,\n"
" xsub_specs, file);\n"
"}\n"
"\n"
"%s" // Hand-rolled XS.
"\n"
"%s"; // Footer
char *contents
= CFCUtil_sprintf(pattern, self->c_header, privacy_syms, includes,
generated_xs, boot_class, boot_class, class_specs,
xsub_specs, bootstrap_calls, hand_rolled_xs,
self->c_footer);
// Derive path to generated .xs file.
char *xs_path = CFCUtil_sprintf("%s" CHY_DIR_SEP "%s.xs", self->lib_dir,
boot_class);
S_replace_double_colons(xs_path, CHY_DIR_SEP_CHAR);
// Write out if there have been any changes.
CFCUtil_write_if_changed(xs_path, contents, strlen(contents));
FREEMEM(xs_path);
FREEMEM(contents);
FREEMEM(hand_rolled_xs);
FREEMEM(bootstrap_calls);
FREEMEM(xsub_specs);
FREEMEM(class_specs);
FREEMEM(generated_xs);
FREEMEM(includes);
FREEMEM(privacy_syms);
FREEMEM(ordered);
}
