repl indenting
This commit is contained in:
Ben Burdette
parent
6fe660acf9
commit
b18ed02b76
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@ -10,8 +10,6 @@ namespace nix {
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const std::string nativeSystem = SYSTEM;
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// Traces show the chain of calls in nix code. If an ErrPos is included the surrounding
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// lines of code will print.
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BaseError & BaseError::addTrace(std::optional<ErrPos> e, hintformat hint)
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{
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err.traces.push_front(Trace { .pos = e, .hint = hint});
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@ -119,9 +119,6 @@ protected:
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// string prefix_; // used for location traces etc.
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mutable ErrorInfo err;
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// mutable std::optional<string> trace_;
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// const string& calcTrace() const;
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mutable std::optional<string> what_;
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const string& calcWhat() const;
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@ -167,11 +164,9 @@ public:
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#endif
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const string & msg() const { return calcWhat(); }
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// const string & trace() const { return calcTrace(); }
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// BaseError & addPrefix(const FormatOrString & fs);
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BaseError & addTrace(std::optional<ErrPos> e, hintformat hint);
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const ErrorInfo & info() { calcWhat(); return err; }
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BaseError & addTrace(std::optional<ErrPos> e, hintformat hint);
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};
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#define MakeError(newClass, superClass) \
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360
src/nix/repl.cc
360
src/nix/repl.cc
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@ -101,74 +101,74 @@ NixRepl::~NixRepl()
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static NixRepl * curRepl; // ugly
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static char * completionCallback(char * s, int *match) {
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auto possible = curRepl->completePrefix(s);
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if (possible.size() == 1) {
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auto possible = curRepl->completePrefix(s);
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if (possible.size() == 1) {
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*match = 1;
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auto *res = strdup(possible.begin()->c_str() + strlen(s));
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if (!res) throw Error("allocation failure");
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return res;
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} else if (possible.size() > 1) {
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auto checkAllHaveSameAt = [&](size_t pos) {
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auto &first = *possible.begin();
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for (auto &p : possible) {
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if (p.size() <= pos || p[pos] != first[pos])
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return false;
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}
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return true;
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};
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size_t start = strlen(s);
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size_t len = 0;
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while (checkAllHaveSameAt(start + len)) ++len;
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if (len > 0) {
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*match = 1;
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auto *res = strdup(possible.begin()->c_str() + strlen(s));
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auto *res = strdup(std::string(*possible.begin(), start, len).c_str());
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if (!res) throw Error("allocation failure");
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return res;
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} else if (possible.size() > 1) {
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auto checkAllHaveSameAt = [&](size_t pos) {
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auto &first = *possible.begin();
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for (auto &p : possible) {
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if (p.size() <= pos || p[pos] != first[pos])
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return false;
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}
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return true;
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};
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size_t start = strlen(s);
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size_t len = 0;
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while (checkAllHaveSameAt(start + len)) ++len;
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if (len > 0) {
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*match = 1;
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auto *res = strdup(std::string(*possible.begin(), start, len).c_str());
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if (!res) throw Error("allocation failure");
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return res;
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}
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}
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}
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}
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*match = 0;
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return nullptr;
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*match = 0;
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return nullptr;
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}
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static int listPossibleCallback(char *s, char ***avp) {
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auto possible = curRepl->completePrefix(s);
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auto possible = curRepl->completePrefix(s);
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if (possible.size() > (INT_MAX / sizeof(char*)))
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throw Error("too many completions");
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if (possible.size() > (INT_MAX / sizeof(char*)))
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throw Error("too many completions");
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int ac = 0;
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char **vp = nullptr;
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int ac = 0;
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char **vp = nullptr;
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auto check = [&](auto *p) {
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if (!p) {
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if (vp) {
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while (--ac >= 0)
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free(vp[ac]);
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free(vp);
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}
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throw Error("allocation failure");
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}
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return p;
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};
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auto check = [&](auto *p) {
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if (!p) {
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if (vp) {
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while (--ac >= 0)
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free(vp[ac]);
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free(vp);
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}
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throw Error("allocation failure");
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}
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return p;
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};
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vp = check((char **)malloc(possible.size() * sizeof(char*)));
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vp = check((char **)malloc(possible.size() * sizeof(char*)));
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for (auto & p : possible)
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vp[ac++] = check(strdup(p.c_str()));
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for (auto & p : possible)
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vp[ac++] = check(strdup(p.c_str()));
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*avp = vp;
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*avp = vp;
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return ac;
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return ac;
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}
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namespace {
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// Used to communicate to NixRepl::getLine whether a signal occurred in ::readline.
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volatile sig_atomic_t g_signal_received = 0;
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// Used to communicate to NixRepl::getLine whether a signal occurred in ::readline.
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volatile sig_atomic_t g_signal_received = 0;
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void sigintHandler(int signo) {
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g_signal_received = signo;
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}
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void sigintHandler(int signo) {
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g_signal_received = signo;
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}
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}
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void NixRepl::mainLoop(const std::vector<std::string> & files)
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@ -235,24 +235,24 @@ bool NixRepl::getLine(string & input, const std::string &prompt)
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sigset_t savedSignalMask, set;
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auto setupSignals = [&]() {
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act.sa_handler = sigintHandler;
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sigfillset(&act.sa_mask);
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act.sa_flags = 0;
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if (sigaction(SIGINT, &act, &old))
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throw SysError("installing handler for SIGINT");
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act.sa_handler = sigintHandler;
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sigfillset(&act.sa_mask);
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act.sa_flags = 0;
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if (sigaction(SIGINT, &act, &old))
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throw SysError("installing handler for SIGINT");
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sigemptyset(&set);
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sigaddset(&set, SIGINT);
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if (sigprocmask(SIG_UNBLOCK, &set, &savedSignalMask))
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throw SysError("unblocking SIGINT");
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};
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sigemptyset(&set);
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sigaddset(&set, SIGINT);
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if (sigprocmask(SIG_UNBLOCK, &set, &savedSignalMask))
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throw SysError("unblocking SIGINT");
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};
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auto restoreSignals = [&]() {
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if (sigprocmask(SIG_SETMASK, &savedSignalMask, nullptr))
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throw SysError("restoring signals");
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if (sigprocmask(SIG_SETMASK, &savedSignalMask, nullptr))
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throw SysError("restoring signals");
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if (sigaction(SIGINT, &old, 0))
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throw SysError("restoring handler for SIGINT");
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};
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if (sigaction(SIGINT, &old, 0))
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throw SysError("restoring handler for SIGINT");
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};
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setupSignals();
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char * s = readline(prompt.c_str());
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@ -266,7 +266,7 @@ bool NixRepl::getLine(string & input, const std::string &prompt)
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}
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if (!s)
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return false;
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return false;
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input += s;
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input += '\n';
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return true;
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@ -399,21 +399,21 @@ bool NixRepl::processLine(string line)
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if (command == ":?" || command == ":help") {
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std::cout
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<< "The following commands are available:\n"
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<< "\n"
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<< " <expr> Evaluate and print expression\n"
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<< " <x> = <expr> Bind expression to variable\n"
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<< " :a <expr> Add attributes from resulting set to scope\n"
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<< " :b <expr> Build derivation\n"
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<< " :e <expr> Open the derivation in $EDITOR\n"
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<< " :i <expr> Build derivation, then install result into current profile\n"
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<< " :l <path> Load Nix expression and add it to scope\n"
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<< " :p <expr> Evaluate and print expression recursively\n"
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<< " :q Exit nix-repl\n"
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<< " :r Reload all files\n"
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<< " :s <expr> Build dependencies of derivation, then start nix-shell\n"
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<< " :t <expr> Describe result of evaluation\n"
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<< " :u <expr> Build derivation, then start nix-shell\n";
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<< "The following commands are available:\n"
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<< "\n"
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<< " <expr> Evaluate and print expression\n"
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<< " <x> = <expr> Bind expression to variable\n"
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<< " :a <expr> Add attributes from resulting set to scope\n"
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<< " :b <expr> Build derivation\n"
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<< " :e <expr> Open the derivation in $EDITOR\n"
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<< " :i <expr> Build derivation, then install result into current profile\n"
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<< " :l <path> Load Nix expression and add it to scope\n"
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<< " :p <expr> Evaluate and print expression recursively\n"
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<< " :q Exit nix-repl\n"
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<< " :r Reload all files\n"
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<< " :s <expr> Build dependencies of derivation, then start nix-shell\n"
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<< " :t <expr> Describe result of evaluation\n"
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<< " :u <expr> Build derivation, then start nix-shell\n";
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}
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else if (command == ":a" || command == ":add") {
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@ -639,118 +639,118 @@ std::ostream & NixRepl::printValue(std::ostream & str, Value & v, unsigned int m
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switch (v.type) {
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case tInt:
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str << ANSI_CYAN << v.integer << ANSI_NORMAL;
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break;
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case tInt:
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str << ANSI_CYAN << v.integer << ANSI_NORMAL;
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break;
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case tBool:
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str << ANSI_CYAN << (v.boolean ? "true" : "false") << ANSI_NORMAL;
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break;
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case tBool:
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str << ANSI_CYAN << (v.boolean ? "true" : "false") << ANSI_NORMAL;
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break;
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case tString:
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str << ANSI_YELLOW;
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printStringValue(str, v.string.s);
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str << ANSI_NORMAL;
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break;
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case tString:
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str << ANSI_YELLOW;
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printStringValue(str, v.string.s);
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str << ANSI_NORMAL;
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break;
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case tPath:
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str << ANSI_GREEN << v.path << ANSI_NORMAL; // !!! escaping?
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break;
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case tPath:
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str << ANSI_GREEN << v.path << ANSI_NORMAL; // !!! escaping?
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break;
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case tNull:
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str << ANSI_CYAN "null" ANSI_NORMAL;
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break;
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case tNull:
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str << ANSI_CYAN "null" ANSI_NORMAL;
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break;
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case tAttrs: {
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seen.insert(&v);
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case tAttrs: {
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seen.insert(&v);
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bool isDrv = state->isDerivation(v);
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bool isDrv = state->isDerivation(v);
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if (isDrv) {
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str << "«derivation ";
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Bindings::iterator i = v.attrs->find(state->sDrvPath);
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PathSet context;
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Path drvPath = i != v.attrs->end() ? state->coerceToPath(*i->pos, *i->value, context) : "???";
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str << drvPath << "»";
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if (isDrv) {
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str << "«derivation ";
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Bindings::iterator i = v.attrs->find(state->sDrvPath);
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PathSet context;
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Path drvPath = i != v.attrs->end() ? state->coerceToPath(*i->pos, *i->value, context) : "???";
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str << drvPath << "»";
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}
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else if (maxDepth > 0) {
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str << "{ ";
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typedef std::map<string, Value *> Sorted;
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Sorted sorted;
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for (auto & i : *v.attrs)
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sorted[i.name] = i.value;
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for (auto & i : sorted) {
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if (isVarName(i.first))
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str << i.first;
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else
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printStringValue(str, i.first.c_str());
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str << " = ";
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if (seen.find(i.second) != seen.end())
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str << "«repeated»";
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else
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try {
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printValue(str, *i.second, maxDepth - 1, seen);
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} catch (AssertionError & e) {
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str << ANSI_RED "«error: " << e.msg() << "»" ANSI_NORMAL;
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}
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str << "; ";
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}
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else if (maxDepth > 0) {
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str << "{ ";
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str << "}";
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} else
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str << "{ ... }";
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typedef std::map<string, Value *> Sorted;
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Sorted sorted;
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for (auto & i : *v.attrs)
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sorted[i.name] = i.value;
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break;
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}
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for (auto & i : sorted) {
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if (isVarName(i.first))
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str << i.first;
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else
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printStringValue(str, i.first.c_str());
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str << " = ";
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if (seen.find(i.second) != seen.end())
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str << "«repeated»";
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else
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try {
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printValue(str, *i.second, maxDepth - 1, seen);
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} catch (AssertionError & e) {
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str << ANSI_RED "«error: " << e.msg() << "»" ANSI_NORMAL;
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}
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str << "; ";
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}
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case tList1:
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case tList2:
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case tListN:
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seen.insert(&v);
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str << "}";
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} else
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str << "{ ... }";
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str << "[ ";
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if (maxDepth > 0)
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for (unsigned int n = 0; n < v.listSize(); ++n) {
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if (seen.find(v.listElems()[n]) != seen.end())
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str << "«repeated»";
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else
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try {
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printValue(str, *v.listElems()[n], maxDepth - 1, seen);
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} catch (AssertionError & e) {
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str << ANSI_RED "«error: " << e.msg() << "»" ANSI_NORMAL;
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}
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str << " ";
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}
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else
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str << "... ";
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str << "]";
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break;
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break;
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}
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case tLambda: {
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std::ostringstream s;
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s << v.lambda.fun->pos;
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str << ANSI_BLUE "«lambda @ " << filterANSIEscapes(s.str()) << "»" ANSI_NORMAL;
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break;
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}
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case tList1:
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case tList2:
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case tListN:
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seen.insert(&v);
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case tPrimOp:
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str << ANSI_MAGENTA "«primop»" ANSI_NORMAL;
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break;
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str << "[ ";
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if (maxDepth > 0)
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for (unsigned int n = 0; n < v.listSize(); ++n) {
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if (seen.find(v.listElems()[n]) != seen.end())
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str << "«repeated»";
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else
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try {
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printValue(str, *v.listElems()[n], maxDepth - 1, seen);
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} catch (AssertionError & e) {
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str << ANSI_RED "«error: " << e.msg() << "»" ANSI_NORMAL;
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}
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str << " ";
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}
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else
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str << "... ";
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str << "]";
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break;
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case tPrimOpApp:
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str << ANSI_BLUE "«primop-app»" ANSI_NORMAL;
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break;
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case tLambda: {
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std::ostringstream s;
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s << v.lambda.fun->pos;
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str << ANSI_BLUE "«lambda @ " << filterANSIEscapes(s.str()) << "»" ANSI_NORMAL;
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break;
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}
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case tFloat:
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str << v.fpoint;
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break;
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case tPrimOp:
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str << ANSI_MAGENTA "«primop»" ANSI_NORMAL;
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break;
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case tPrimOpApp:
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str << ANSI_BLUE "«primop-app»" ANSI_NORMAL;
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break;
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case tFloat:
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str << v.fpoint;
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break;
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default:
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str << ANSI_RED "«unknown»" ANSI_NORMAL;
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break;
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default:
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str << ANSI_RED "«unknown»" ANSI_NORMAL;
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break;
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}
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return str;
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@ -773,10 +773,10 @@ struct CmdRepl : StoreCommand, MixEvalArgs
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Examples examples() override
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{
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return {
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Example{
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"Display all special commands within the REPL:",
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"nix repl\n nix-repl> :?"
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}
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Example{
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"Display all special commands within the REPL:",
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"nix repl\n nix-repl> :?"
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}
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};
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}
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