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