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denoland-deno/libdeno/snapshot_creator.cc
Ryan Dahl c113df1bb8
Process source maps in Rust instead of JS (#1280)
- Improves speed and binary size significantly.
- Makes deno_last_exception() output a JSON structure.
- Isolate::execute and Isolate::event_loop now return
  structured, mapped JSError objects on errors.
- Removes libdeno functions:
  libdeno.setGlobalErrorHandler()
  libdeno.setPromiseRejectHandler()
  libdeno.setPromiseErrorExaminer()

In collaboration with Ryan Dahl.
2018-12-06 23:05:36 -05:00

45 lines
1.2 KiB
C++

// Copyright 2018 the Deno authors. All rights reserved. MIT license.
// Hint: --trace_serializer is a useful debugging flag.
#include <fstream>
#include "deno.h"
#include "file_util.h"
#include "internal.h"
#include "third_party/v8/include/v8.h"
#include "third_party/v8/src/base/logging.h"
namespace deno {} // namespace deno
int main(int argc, char** argv) {
const char* snapshot_out_bin = argv[1];
const char* js_fn = argv[2];
const char* source_map_fn = argv[3]; // Optional.
v8::V8::SetFlagsFromCommandLine(&argc, argv, true);
CHECK_NE(js_fn, nullptr);
CHECK_NE(snapshot_out_bin, nullptr);
std::string js_source;
CHECK(deno::ReadFileToString(js_fn, &js_source));
std::string source_map;
if (source_map_fn != nullptr) {
CHECK_EQ(argc, 4);
CHECK(deno::ReadFileToString(source_map_fn, &source_map));
}
deno_init();
deno_config config = {deno::empty_buf, nullptr};
Deno* d = deno_new_snapshotter(config, js_fn, js_source.c_str());
auto snapshot = deno_get_snapshot(d);
std::ofstream file_(snapshot_out_bin, std::ios::binary);
file_.write(reinterpret_cast<char*>(snapshot.data_ptr), snapshot.data_len);
file_.close();
delete[] snapshot.data_ptr;
deno_delete(d);
return file_.bad();
}