libnixt/tools/nixt-decode: init

libnixt/meson.build

@@ -40,6 +40,8 @@ libnixt_test_exe = executable(
     dependencies: [ gtest_main, nixt ]
 )
 
+subdir('tools')
+
 test(
     'unit/libnixt',
     libnixt_test_exe,

libnixt/tools/meson.build

@@ -0,0 +1 @@
+subdir('nixt-decode')

libnixt/tools/nixt-decode/Main.cpp

@@ -0,0 +1,30 @@
+#include "nixt/Deserialize.h"
+#include "nixt/HookExpr.h"
+#include "nixt/InitEval.h"
+#include "nixt/PtrPool.h"
+
+int main() {
+  nixt::initEval();
+  std::unique_ptr<nix::EvalState> State(
+      new nix::EvalState{{}, nix::openStore("dummy://")});
+
+  std::ostringstream Inputs;
+  Inputs << std::cin.rdbuf();
+  std::string DataBuf = Inputs.str();
+
+  std::string_view Data(DataBuf);
+
+  nixt::PtrPool<nix::Expr> Pool;
+
+  nixt::ValueMap VMap;
+  nixt::EnvMap EMap;
+  nix::Pos::Origin O = nix::Pos::none_tag{};
+
+  nixt::DeserializeContext Ctx = nixt::getDeserializeContext(*State, ".", O);
+
+  auto *AST = nixt::deserializeHookable(Data, Ctx, Pool, VMap, EMap);
+
+  AST->show(State->symbols, std::cout);
+
+  return 0;
+}

libnixt/tools/nixt-decode/meson.build

@@ -0,0 +1,5 @@
+executable('nixt-decode',
+    'Main.cpp',
+    install: true,
+    dependencies: [ nixt ]
+)