nixir

#ifdef unix

#undef unix

#endif

#include "nix/expr/eval.hh"

#include "nix/expr/primops.hh"

#include "nix/expr/value.hh"

#include "nix/store/store-api.hh"

#include "nix/util/source-path.hh"

#include "irc/ir_gen.h"

#include "irc/parser.h"

#include "irc/resolver.h"

#include "irc/serializer.h"

#include "irc/types.h"

#include <fstream>

#include <iostream>

#include <memory>

#include <optional>

namespace nix_ir_plugin {

using namespace nix;

using namespace nix_irc;

/**

 * Load and evaluate a pre-compiled IR bundle

 * Usage: builtins.nixIR.loadIR "/path/to/file.nixir"

 */

static void prim_loadIR(EvalState &state, const PosIdx pos, Value **args,

                        Value &v) {

  auto path = state.forceStringNoCtx(

      *args[0], pos,

      "while evaluating the first argument to builtins.nixIR.loadIR");

  std::string pathStr(path);

  // Try to load the IR bundle

  std::ifstream file(pathStr, std::ios::binary | std::ios::ate);

  if (!file.is_open()) {

    state.error<EvalError>("cannot open IR bundle: %s", pathStr)

        .atPos(pos)

        .debugThrow();

  }

  // Read magic number to verify it's an IR file

  file.seekg(0);

  uint32_t magic = 0;

  file.read(reinterpret_cast<char *>(&magic), sizeof(magic));

  if (magic != IR_MAGIC) {

    state

        .error<EvalError>("not a valid IR bundle: %s (bad magic number)",

                          pathStr)

        .atPos(pos)

        .debugThrow();

  }

  // For now, just return a marker that this is an IR file

  // FIXME: complete full VM implementation

  auto bindings = state.buildBindings(2);

  Value *vType = state.allocValue();

  vType->mkString("ir-bundle");

  bindings.insert(state.symbols.create("type"), vType);

  Value *vPath = state.allocValue();

  vPath->mkString(pathStr);

  bindings.insert(state.symbols.create("path"), vPath);

  v.mkAttrs(bindings.finish());

}

/**

 * Compile Nix source to IR on-the-fly

 * Usage: builtins.nixIR.compile "{ x = 1; }"

 */

static void prim_compileNix(EvalState &state, const PosIdx pos, Value **args,

                            Value &v) {

  auto source = state.forceStringNoCtx(

      *args[0], pos,

      "while evaluating the first argument to builtins.nixIR.compile");

  std::string sourceStr(source);

  try {

    // Parse the Nix source

    Parser parser;

    auto ast = parser.parse(sourceStr, "<inline>");

    if (!ast) {

      state.error<EvalError>("failed to parse Nix expression")

          .atPos(pos)

          .debugThrow();

    }

    // Generate IR

    IRGenerator ir_gen;

    auto ir = ir_gen.generate(ast);

    // For now, return a marker that compilation succeeded

    // FIXME: full evaluation

    auto bindings = state.buildBindings(2);

    Value *vType = state.allocValue();

    vType->mkString("ir-compiled");

    bindings.insert(state.symbols.create("type"), vType);

    Value *vSource = state.allocValue();

    vSource->mkString(sourceStr.substr(0, 50));

    bindings.insert(state.symbols.create("source"), vSource);

    v.mkAttrs(bindings.finish());

  } catch (const std::exception &e) {

    state.error<EvalError>("IR compilation failed: %s", e.what())

        .atPos(pos)

        .debugThrow();

  }

}

/**

 * Get information about the IR plugin

 * Usage: builtins.nixIR.info

 */

static void prim_info(EvalState &state, const PosIdx pos, Value **args,

                      Value &v) {

  auto bindings = state.buildBindings(4);

  Value *vName = state.allocValue();

  vName->mkString("nix-ir-plugin");

  bindings.insert(state.symbols.create("name"), vName);

  Value *vVersion = state.allocValue();

  vVersion->mkString("0.1.0-alpha");

  bindings.insert(state.symbols.create("version"), vVersion);

  Value *vPhase = state.allocValue();

  vPhase->mkString("phase-4");

  bindings.insert(state.symbols.create("phase"), vPhase);

  Value *vStatus = state.allocValue();

  vStatus->mkString("compiler-complete");

  bindings.insert(state.symbols.create("status"), vStatus);

  v.mkAttrs(bindings.finish());

}

// Register primops on plugin load

static RegisterPrimOp rp_loadIR({

    .name = "__nixIR_loadIR",

    .args = {"path"},

    .arity = 1,

    .doc = R"(

      Load a pre-compiled IR bundle from the given path.

      Returns an attrset with information about the loaded bundle.

    )",

    .fun = prim_loadIR,

});

static RegisterPrimOp rp_compileNix({

    .name = "__nixIR_compile",

    .args = {"source"},

    .arity = 1,

    .doc = R"(

      Compile Nix source code to IR on-the-fly.

      Returns an attrset with information about the compiled IR.

    )",

    .fun = prim_compileNix,

});

static RegisterPrimOp rp_info({

    .name = "__nixIR_info",

    .args = {},

    .arity = 0,

    .doc = R"(

      Get information about the IR plugin.

      Returns an attrset with plugin name, version, and status.

    )",

    .fun = prim_info,

});

} // namespace nix_ir_plugin

// Plugin initialization message

__attribute__((constructor)) static void init_plugin() {

  std::cerr << "nix-ir-plugin loaded" << std::endl;

}