105 lines
3.5 KiB
C++
105 lines
3.5 KiB
C++
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#include <nan.h>
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#include <stdexcept>
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#include "custom_importer_bridge.h"
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#include "create_string.h"
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SassImportList CustomImporterBridge::post_process_return_value(v8::Local<v8::Value> returned_value) const {
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SassImportList imports = 0;
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Nan::HandleScope scope;
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if (returned_value->IsArray()) {
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v8::Local<v8::Array> array = returned_value.As<v8::Array>();
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imports = sass_make_import_list(array->Length());
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for (size_t i = 0; i < array->Length(); ++i) {
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v8::Local<v8::Value> value;
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Nan::MaybeLocal<v8::Value> unchecked = Nan::Get(array, static_cast<uint32_t>(i));
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if (!unchecked.ToLocal(&value) || !value->IsObject()) {
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imports[i] = sass_make_import_entry(0, 0, 0);
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sass_import_set_error(imports[i], "returned array must only contain object literals", -1, -1);
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continue;
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}
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v8::Local<v8::Object> object = value.As<v8::Object>();
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if (value->IsNativeError()) {
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char* message = create_string(Nan::Get(object, Nan::New<v8::String>("message").ToLocalChecked()));
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imports[i] = sass_make_import_entry(0, 0, 0);
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sass_import_set_error(imports[i], message, -1, -1);
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free(message);
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}
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else {
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imports[i] = get_importer_entry(object);
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}
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}
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}
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else if (returned_value->IsNativeError()) {
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imports = sass_make_import_list(1);
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v8::Local<v8::Object> object = returned_value.As<v8::Object>();
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char* message = create_string(Nan::Get(object, Nan::New<v8::String>("message").ToLocalChecked()));
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imports[0] = sass_make_import_entry(0, 0, 0);
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sass_import_set_error(imports[0], message, -1, -1);
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free(message);
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}
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else if (returned_value->IsObject()) {
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imports = sass_make_import_list(1);
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imports[0] = get_importer_entry(returned_value.As<v8::Object>());
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}
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return imports;
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}
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Sass_Import* CustomImporterBridge::check_returned_string(Nan::MaybeLocal<v8::Value> value, const char *msg) const
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{
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v8::Local<v8::Value> checked;
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if (value.ToLocal(&checked)) {
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if (!checked->IsUndefined() && !checked->IsString()) {
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goto err;
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} else {
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return nullptr;
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}
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}
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err:
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auto entry = sass_make_import_entry(0, 0, 0);
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sass_import_set_error(entry, msg, -1, -1);
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return entry;
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}
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Sass_Import* CustomImporterBridge::get_importer_entry(const v8::Local<v8::Object>& object) const {
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Nan::MaybeLocal<v8::Value> returned_file = Nan::Get(object, Nan::New<v8::String>("file").ToLocalChecked());
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Nan::MaybeLocal<v8::Value> returned_contents = Nan::Get(object, Nan::New<v8::String>("contents").ToLocalChecked());
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Nan::MaybeLocal<v8::Value> returned_map = Nan::Get(object, Nan::New<v8::String>("map").ToLocalChecked());
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Sass_Import *err;
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if ((err = check_returned_string(returned_file, "returned value of `file` must be a string")))
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return err;
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if ((err = check_returned_string(returned_contents, "returned value of `contents` must be a string")))
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return err;
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if ((err = check_returned_string(returned_map, "returned value of `returned_map` must be a string")))
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return err;
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char* path = create_string(returned_file);
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char* contents = create_string(returned_contents);
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char* srcmap = create_string(returned_map);
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return sass_make_import_entry(path, contents, srcmap);
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}
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std::vector<v8::Local<v8::Value>> CustomImporterBridge::pre_process_args(std::vector<void*> in) const {
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std::vector<v8::Local<v8::Value>> out;
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for (void* ptr : in) {
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out.push_back(Nan::New<v8::String>((char const*)ptr).ToLocalChecked());
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}
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return out;
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}
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