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print value in break
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parent
412d58f0bb
commit
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2 changed files with 7 additions and 2 deletions
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@ -77,7 +77,8 @@ ref<EvalState> EvalCommand::getEvalState()
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searchPath, getEvalStore(), getStore());
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searchPath, getEvalStore(), getStore());
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if (startReplOnEvalErrors)
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if (startReplOnEvalErrors)
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debuggerHook = [evalState{ref<EvalState>(evalState)}](const Error * error, const Env & env, const Expr & expr) {
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debuggerHook = [evalState{ref<EvalState>(evalState)}](const Error * error, const Env & env, const Expr & expr) {
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std::cout << "\033[2J\033[1;1H";
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// clear the screen.
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// std::cout << "\033[2J\033[1;1H";
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if (error)
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if (error)
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printError("%s\n\n" ANSI_BOLD "Starting REPL to allow you to inspect the current state of the evaluator.\n" ANSI_NORMAL, error->what());
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printError("%s\n\n" ANSI_BOLD "Starting REPL to allow you to inspect the current state of the evaluator.\n" ANSI_NORMAL, error->what());
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@ -712,12 +712,13 @@ static RegisterPrimOp primop_genericClosure(RegisterPrimOp::Info {
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static RegisterPrimOp primop_break({
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static RegisterPrimOp primop_break({
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.name = "break",
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.name = "break",
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.args = {},
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.args = {"v"},
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.doc = R"(
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.doc = R"(
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In debug mode, pause Nix expression evaluation and enter the repl.
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In debug mode, pause Nix expression evaluation and enter the repl.
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)",
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)",
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.fun = [](EvalState & state, const Pos & pos, Value * * args, Value & v)
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.fun = [](EvalState & state, const Pos & pos, Value * * args, Value & v)
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{
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{
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std::cout << "primop_break, value: " << *args[0] << std::endl;
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// PathSet context;
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// PathSet context;
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// string s = state.coerceToString(pos, *args[0], context);
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// string s = state.coerceToString(pos, *args[0], context);
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if (debuggerHook && !state.debugTraces.empty())
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if (debuggerHook && !state.debugTraces.empty())
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@ -728,6 +729,9 @@ static RegisterPrimOp primop_break({
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// const Env &env;
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// const Env &env;
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// hintformat hint;
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// hintformat hint;
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debuggerHook(nullptr, dt.env, dt.expr);
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debuggerHook(nullptr, dt.env, dt.expr);
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// returning the value we were passed.
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v = *args[0];
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}
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}
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}
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}
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});
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});
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