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denoland-deno/deno2/snapshot_creator.cc
2018-06-14 14:19:17 +02:00

47 lines
1.6 KiB
C++

// Copyright 2018 Ryan Dahl <ry@tinyclouds.org>
// All rights reserved. MIT License.
// Hint: --trace_serializer is a useful debugging flag.
#include "deno_internal.h"
#include "file_util.h"
#include "include/deno.h"
#include "v8/include/v8.h"
#include "v8/src/base/logging.h"
v8::StartupData StringToStartupData(const std::string& s) {
return v8::StartupData{s.c_str(), s.size()};
}
int main(int argc, char** argv) {
const char* js_fn = argv[1];
const char* natives_in_bin = argv[2];
const char* snapshot_in_bin = argv[3];
const char* natives_out_cc = argv[4];
const char* snapshot_out_cc = argv[5];
CHECK_NE(js_fn, nullptr);
CHECK_NE(natives_in_bin, nullptr);
CHECK_NE(snapshot_in_bin, nullptr);
CHECK_NE(natives_out_cc, nullptr);
CHECK_NE(snapshot_out_cc, nullptr);
v8::V8::SetFlagsFromCommandLine(&argc, argv, true);
std::string js_source;
CHECK(deno::ReadFileToString(js_fn, &js_source));
std::string natives_str;
CHECK(deno::ReadFileToString(natives_in_bin, &natives_str));
auto natives_blob = StringToStartupData(natives_str);
std::string snapshot_in_str;
CHECK(deno::ReadFileToString(snapshot_in_bin, &snapshot_in_str));
auto snapshot_in_blob = StringToStartupData(snapshot_in_str);
deno_init();
auto snapshot_blob = deno::MakeSnapshot(&natives_blob, &snapshot_in_blob,
js_fn, js_source.c_str());
std::string snapshot_str(snapshot_blob.data, snapshot_blob.raw_size);
CHECK(deno::WriteDataAsCpp("natives", natives_out_cc, natives_str));
CHECK(deno::WriteDataAsCpp("snapshot", snapshot_out_cc, snapshot_str));
}