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add nullable Expr argument

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This commit is contained in:
Ben Burdette 2021-10-11 14:42:29 -06:00
parent aad27143c6
commit 2ee1fa4afd
4 changed files with 74 additions and 63 deletions
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4
src/libcmd/command.cc
View file

@ -97,7 +97,7 @@ EvalCommand::EvalCommand()
});
}
// extern std::function<void(const Error & error, const std::map<std::string, Value *> & env)> debuggerHook;
extern std::function<void(const Error & error, const Env & env)> debuggerHook;
extern std::function<void(const Error & error, const Env & env, const Expr & expr)> debuggerHook;
ref<EvalState> EvalCommand::getEvalState()
{
@ -105,7 +105,7 @@ ref<EvalState> EvalCommand::getEvalState()
if (!evalState) {
evalState = std::make_shared<EvalState>(searchPath, getStore());
if (startReplOnEvalErrors)
debuggerHook = [evalState{ref<EvalState>(evalState)}](const Error & error, const Env & env) {
debuggerHook = [evalState{ref<EvalState>(evalState)}](const Error & error, const Env & env, const Expr & expr) {
printError("%s\n\n" ANSI_BOLD "Starting REPL to allow you to inspect the current state of the evaluator.\n" ANSI_NORMAL, error.what());
// printEnvPosChain(env);
printEnvBindings(env);

129
src/libexpr/eval.cc
View file

@ -36,7 +36,7 @@
namespace nix {
// std::function<void(const Error & error, const std::map<std::string, Value *> & env)> debuggerHook;
std::function<void(const Error & error, const Env & env)> debuggerHook;
std::function<void(const Error & error, const Env & env, const Expr & expr)> debuggerHook;
static char * dupString(const char * s)
{
@ -806,17 +806,17 @@ valmap * mapEnvBindings(const Env &env)
evaluator. So here are some helper functions for throwing
exceptions. */
LocalNoInlineNoReturn(void throwEvalError(const char * s, const string & s2, Env & env))
LocalNoInlineNoReturn(void throwEvalError(const char * s, const string & s2, Env & env, Expr *expr))
{
// auto delenv = std::unique_ptr<valmap>(env);
auto error = EvalError(s, s2);
if (debuggerHook)
debuggerHook(error, env);
if (debuggerHook && expr)
debuggerHook(error, env, *expr);
throw error;
}
LocalNoInlineNoReturn(void throwEvalError(const Pos & pos, const char * s, const string & s2, Env & env))
LocalNoInlineNoReturn(void throwEvalError(const Pos & pos, const char * s, const string & s2, Env & env, Expr *expr))
{
// auto delenv = std::unique_ptr<valmap>(env);
auto error = EvalError({
@ -824,22 +824,24 @@ LocalNoInlineNoReturn(void throwEvalError(const Pos & pos, const char * s, const
.errPos = pos
});
if (debuggerHook)
debuggerHook(error, env);
if (debuggerHook && expr)
debuggerHook(error, env, *expr);
throw error;
}
LocalNoInlineNoReturn(void throwEvalError(const char * s, const string & s2, const string & s3, Env & env))
LocalNoInlineNoReturn(void throwEvalError(const char * s, const string & s2, const string & s3, Env & env, Expr *expr))
{
// auto delenv = std::unique_ptr<valmap>(env);
auto error = EvalError(s, s2, s3);
if (debuggerHook)
debuggerHook(error, env);
if (debuggerHook && expr)
debuggerHook(error, env, *expr);
throw error;
}
LocalNoInlineNoReturn(void throwEvalError(const Pos & pos, const char * s, const string & s2, const string & s3, Env & env))
LocalNoInlineNoReturn(void throwEvalError(const Pos & pos, const char * s, const string & s2, const string & s3, Env & env, Expr *expr))
{
// auto delenv = std::unique_ptr<valmap>(env);
auto error = EvalError({
@ -847,12 +849,13 @@ LocalNoInlineNoReturn(void throwEvalError(const Pos & pos, const char * s, const
.errPos = pos
});
if (debuggerHook)
debuggerHook(error, env);
if (debuggerHook && expr)
debuggerHook(error, env, *expr);
throw error;
}
LocalNoInlineNoReturn(void throwEvalError(const Pos & p1, const char * s, const Symbol & sym, const Pos & p2, Env & env))
LocalNoInlineNoReturn(void throwEvalError(const Pos & p1, const char * s, const Symbol & sym, const Pos & p2, Env & env, Expr *expr))
{
// p1 is where the error occurred; p2 is a position mentioned in the message.
// auto delenv = std::unique_ptr<valmap>(env);
@ -861,12 +864,13 @@ LocalNoInlineNoReturn(void throwEvalError(const Pos & p1, const char * s, const
.errPos = p1
});
if (debuggerHook)
debuggerHook(error, env);
if (debuggerHook && expr)
debuggerHook(error, env, *expr);
throw error;
}
LocalNoInlineNoReturn(void throwTypeError(const Pos & pos, const char * s, Env & env))
LocalNoInlineNoReturn(void throwTypeError(const Pos & pos, const char * s, Env & env, Expr *expr))
{
// auto delenv = std::unique_ptr<valmap>(env);
auto error = TypeError({
@ -874,12 +878,13 @@ LocalNoInlineNoReturn(void throwTypeError(const Pos & pos, const char * s, Env &
.errPos = pos
});
if (debuggerHook)
debuggerHook(error, env);
if (debuggerHook && expr)
debuggerHook(error, env, *expr);
throw error;
}
LocalNoInlineNoReturn(void throwTypeError(const Pos & pos, const char * s, const Value & v, Env & env))
LocalNoInlineNoReturn(void throwTypeError(const Pos & pos, const char * s, const Value & v, Env & env, Expr *expr))
{
// auto delenv = std::unique_ptr<valmap>(env);
auto error = TypeError({
@ -887,12 +892,13 @@ LocalNoInlineNoReturn(void throwTypeError(const Pos & pos, const char * s, const
.errPos = pos
});
if (debuggerHook)
debuggerHook(error, env);
if (debuggerHook && expr)
debuggerHook(error, env, *expr);
throw error;
}
LocalNoInlineNoReturn(void throwTypeError(const Pos & pos, const char * s, const string &s2, Env & env))
LocalNoInlineNoReturn(void throwTypeError(const Pos & pos, const char * s, const string &s2, Env & env, Expr *expr))
{
// auto delenv = std::unique_ptr<valmap>(env);
auto error = TypeError({
@ -900,12 +906,13 @@ LocalNoInlineNoReturn(void throwTypeError(const Pos & pos, const char * s, const
.errPos = pos
});
if (debuggerHook)
debuggerHook(error, env);
if (debuggerHook && expr)
debuggerHook(error, env, *expr);
throw error;
}
LocalNoInlineNoReturn(void throwTypeError(const Pos & pos, const char * s, const ExprLambda & fun, const Symbol & s2, Env & env))
LocalNoInlineNoReturn(void throwTypeError(const Pos & pos, const char * s, const ExprLambda & fun, const Symbol & s2, Env & env, Expr *expr))
{
// auto delenv = std::unique_ptr<valmap>(env);
auto error = TypeError({
@ -913,12 +920,13 @@ LocalNoInlineNoReturn(void throwTypeError(const Pos & pos, const char * s, const
.errPos = pos
});
if (debuggerHook)
debuggerHook(error, env);
if (debuggerHook && expr)
debuggerHook(error, env, *expr);
throw error;
}
LocalNoInlineNoReturn(void throwAssertionError(const Pos & pos, const char * s, const string & s1, Env & env))
LocalNoInlineNoReturn(void throwAssertionError(const Pos & pos, const char * s, const string & s1, Env & env, Expr *expr))
{
// auto delenv = std::unique_ptr<valmap>(env);
auto error = AssertionError({
@ -926,12 +934,13 @@ LocalNoInlineNoReturn(void throwAssertionError(const Pos & pos, const char * s,
.errPos = pos
});
if (debuggerHook)
debuggerHook(error, env);
if (debuggerHook && expr)
debuggerHook(error, env, *expr);
throw error;
}
LocalNoInlineNoReturn(void throwUndefinedVarError(const Pos & pos, const char * s, const string & s1, Env & env))
LocalNoInlineNoReturn(void throwUndefinedVarError(const Pos & pos, const char * s, const string & s1, Env & env, Expr *expr))
{
std::cout << "throwUndefinedVarError" << std::endl;
@ -943,12 +952,13 @@ LocalNoInlineNoReturn(void throwUndefinedVarError(const Pos & pos, const char *
std::cout << "pre debuggerHook" << std::endl;
if (debuggerHook)
debuggerHook(error, env);
if (debuggerHook && expr)
debuggerHook(error, env, *expr);
throw error;
}
LocalNoInlineNoReturn(void throwMissingArgumentError(const Pos & pos, const char * s, const string & s1, Env & env))
LocalNoInlineNoReturn(void throwMissingArgumentError(const Pos & pos, const char * s, const string & s1, Env & env, Expr *expr))
{
// auto delenv = std::unique_ptr<valmap>(env);
auto error = MissingArgumentError({
@ -956,8 +966,9 @@ LocalNoInlineNoReturn(void throwMissingArgumentError(const Pos & pos, const char
.errPos = pos
});
if (debuggerHook)
debuggerHook(error, env);
if (debuggerHook && expr)
debuggerHook(error, env, *expr);
throw error;
}
@ -1020,7 +1031,7 @@ inline Value * EvalState::lookupVar(Env * env, const ExprVar & var, bool noEval)
}
if (!env->prevWith) {
std::cout << "pre throwUndefinedVarError" << std::endl;
throwUndefinedVarError(var.pos, "undefined variable '%1%'", var.name, *env);
throwUndefinedVarError(var.pos, "undefined variable '%1%'", var.name, *env, 0);
}
for (size_t l = env->prevWith; l; --l, env = env->up) ;
}
@ -1354,7 +1365,7 @@ void ExprAttrs::eval(EvalState & state, Env & env, Value & v)
Bindings::iterator j = v.attrs->find(nameSym);
if (j != v.attrs->end())
throwEvalError(i.pos, "dynamic attribute '%1%' already defined at %2%", nameSym, *j->pos,
env);
env, this);
// map1("value", &v)); // TODO dynamicAttrs to env?
i.valueExpr->setName(nameSym);
@ -1445,7 +1456,7 @@ void ExprSelect::eval(EvalState & state, Env & env, Value & v)
} else {
state.forceAttrs(*vAttrs, pos);
if ((j = vAttrs->attrs->find(name)) == vAttrs->attrs->end())
throwEvalError(pos, "attribute '%1%' missing", name, env);
throwEvalError(pos, "attribute '%1%' missing", name, env, this);
// mapBindings(*vAttrs->attrs));
}
vAttrs = j->value;
@ -1573,7 +1584,7 @@ void EvalState::callFunction(Value & fun, Value & arg, Value & v, const Pos & po
pos,
"attempt to call something which is not a function but %1%",
showType(fun).c_str(),
fakeEnv(1));
fakeEnv(1), 0);
// fun.env);
// map2("fun", &fun, "arg", &arg));
}
@ -1612,7 +1623,7 @@ void EvalState::callFunction(Value & fun, Value & arg, Value & v, const Pos & po
"%1% called without required argument '%2%'",
lambda,
i.name,
*fun.lambda.env);
*fun.lambda.env, &lambda);
// map2("fun", &fun, "arg", &arg));
env2.values[displ++] = i.def->maybeThunk(*this, env2);
} else {
@ -1633,7 +1644,7 @@ void EvalState::callFunction(Value & fun, Value & arg, Value & v, const Pos & po
"%1% called with unexpected argument '%2%'",
lambda,
i.name,
*fun.lambda.env);
*fun.lambda.env, &lambda);
// map2("fun", &fun, "arg", &arg));
abort(); // can't happen
}
@ -1711,7 +1722,7 @@ this case it must have its arguments supplied either by default
values, or passed explicitly with '--arg' or '--argstr'. See
https://nixos.org/manual/nix/stable/#ss-functions.)",
i.name,
*fun.lambda.env);
*fun.lambda.env, fun.lambda.fun);
// mapBindings(args));
// map1("fun", &fun)); // todo add bindings + fun
}
@ -1761,7 +1772,7 @@ void ExprAssert::eval(EvalState & state, Env & env, Value & v)
if (!state.evalBool(env, cond, pos)) {
std::ostringstream out;
cond->show(out);
throwAssertionError(pos, "assertion '%1%' failed", out.str(), env);
throwAssertionError(pos, "assertion '%1%' failed", out.str(), env, this);
}
body->eval(state, env, v);
}
@ -1915,7 +1926,7 @@ void ExprConcatStrings::eval(EvalState & state, Env & env, Value & v)
} else {
std::cerr << "envtype: " << showType(env.values[0]->type()) << std::endl;
throwEvalError(pos, "cannot add %1% to an integer", showType(vTmp), env);
throwEvalError(pos, "cannot add %1% to an integer", showType(vTmp), env, this);
}
} else if (firstType == nFloat) {
if (vTmp.type() == nInt) {
@ -1923,7 +1934,7 @@ void ExprConcatStrings::eval(EvalState & state, Env & env, Value & v)
} else if (vTmp.type() == nFloat) {
nf += vTmp.fpoint;
} else
throwEvalError(pos, "cannot add %1% to a float", showType(vTmp), env);
throwEvalError(pos, "cannot add %1% to a float", showType(vTmp), env, this);
} else
s << state.coerceToString(pos, vTmp, context, false, firstType == nString);
}
@ -1984,7 +1995,7 @@ NixInt EvalState::forceInt(Value & v, const Pos & pos)
forceValue(v, pos);
if (v.type() != nInt)
throwTypeError(pos, "value is %1% while an integer was expected", v,
fakeEnv(1));
fakeEnv(1), 0);
// map1("value", &v));
return v.integer;
}
@ -1997,7 +2008,7 @@ NixFloat EvalState::forceFloat(Value & v, const Pos & pos)
return v.integer;
else if (v.type() != nFloat)
throwTypeError(pos, "value is %1% while a float was expected", v,
fakeEnv(1));
fakeEnv(1), 0);
// map1("value", &v));
return v.fpoint;
}
@ -2008,7 +2019,7 @@ bool EvalState::forceBool(Value & v, const Pos & pos)
forceValue(v, pos);
if (v.type() != nBool)
throwTypeError(pos, "value is %1% while a Boolean was expected", v,
fakeEnv(1));
fakeEnv(1), 0);
// map1("value", &v));
return v.boolean;
}
@ -2025,7 +2036,7 @@ void EvalState::forceFunction(Value & v, const Pos & pos)
forceValue(v, pos);
if (v.type() != nFunction && !isFunctor(v))
throwTypeError(pos, "value is %1% while a function was expected", v,
fakeEnv(1));
fakeEnv(1), 0);
// map1("value", &v));
}
@ -2035,7 +2046,7 @@ string EvalState::forceString(Value & v, const Pos & pos)
forceValue(v, pos);
if (v.type() != nString) {
throwTypeError(pos, "value is %1% while a string was expected", v,
fakeEnv(1));
fakeEnv(1), 0);
// map1("value", &v));
}
return string(v.string.s);
@ -2089,13 +2100,13 @@ string EvalState::forceStringNoCtx(Value & v, const Pos & pos)
throwEvalError(pos, "the string '%1%' is not allowed to refer to a store path (such as '%2%')",
v.string.s, v.string.context[0],
// b.has_value() ? mapBindings(*b.get()) : map0());
fakeEnv(1));
fakeEnv(1), 0);
// map1("value", &v));
else
throwEvalError("the string '%1%' is not allowed to refer to a store path (such as '%2%')",
v.string.s, v.string.context[0],
// b.has_value() ? mapBindings(*b.get()) : map0());
fakeEnv(1));
fakeEnv(1), 0);
// map1("value", &v));
}
return s;
@ -2169,7 +2180,7 @@ string EvalState::coerceToString(const Pos & pos, Value & v, PathSet & context,
auto i = v.attrs->find(sOutPath);
if (i == v.attrs->end())
throwTypeError(pos, "cannot coerce a set to a string",
fakeEnv(1));
fakeEnv(1), 0);
// map1("value", &v));
return coerceToString(pos, *i->value, context, coerceMore, copyToStore);
}
@ -2201,7 +2212,7 @@ string EvalState::coerceToString(const Pos & pos, Value & v, PathSet & context,
}
throwTypeError(pos, "cannot coerce %1% to a string", v,
fakeEnv(1));
fakeEnv(1), 0);
// map1("value", &v));
}
@ -2211,7 +2222,7 @@ string EvalState::copyPathToStore(PathSet & context, const Path & path)
if (nix::isDerivation(path))
throwEvalError("file names are not allowed to end in '%1%'",
drvExtension,
fakeEnv(1));
fakeEnv(1), 0);
// map0());
Path dstPath;
@ -2237,7 +2248,7 @@ Path EvalState::coerceToPath(const Pos & pos, Value & v, PathSet & context)
string path = coerceToString(pos, v, context, false, false);
if (path == "" || path[0] != '/')
throwEvalError(pos, "string '%1%' doesn't represent an absolute path", path,
fakeEnv(1));
fakeEnv(1), 0);
// map1("value", &v));
return path;
}
@ -2320,7 +2331,7 @@ bool EvalState::eqValues(Value & v1, Value & v2)
throwEvalError("cannot compare %1% with %2%",
showType(v1),
showType(v2),
fakeEnv(1));
fakeEnv(1), 0);
// map2("value1", &v1, "value2", &v2));
}
}

2
src/libexpr/eval.hh
View file

@ -23,7 +23,7 @@ enum RepairFlag : bool;
typedef void (* PrimOpFun) (EvalState & state, const Pos & pos, Value * * args, Value & v);
extern std::function<void(const Error & error, const Env & env)> debuggerHook;
extern std::function<void(const Error & error, const Env & env, const Expr & expr)> debuggerHook;
struct PrimOp
{

2
src/libexpr/nixexpr.hh
View file

@ -20,7 +20,7 @@ MakeError(UndefinedVarError, Error);
MakeError(MissingArgumentError, EvalError);
MakeError(RestrictedPathError, Error);
extern std::function<void(const Error & error, const Env & env)> debuggerHook;
extern std::function<void(const Error & error, const Env & env, const Expr & expr)> debuggerHook;
/* Position objects. */