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forceString: Show position info

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This commit is contained in:
Eelco Dolstra 2014-04-04 21:14:11 +02:00
parent 27b44b8cf7
commit a5fe730940
6 changed files with 46 additions and 30 deletions
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33
src/libexpr/eval.cc
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@ -140,7 +140,8 @@ static void * oomHandler(size_t requested)
#endif
static Symbol getName(const AttrName & name, EvalState & state, Env & env) {
static Symbol getName(const AttrName & name, EvalState & state, Env & env)
{
if (name.symbol.set()) {
return name.symbol;
} else {
@ -279,6 +280,11 @@ LocalNoInlineNoReturn(void throwEvalError(const char * s, const string & s2, con
throw EvalError(format(s) % s2 % s3);
}
LocalNoInlineNoReturn(void throwEvalError(const char * s, const string & s2, const string & s3, const Pos & pos))
{
throw EvalError(format(s) % s2 % s3 % pos);
}
LocalNoInlineNoReturn(void throwEvalError(const char * s, const Symbol & sym, const Pos & p1, const Pos & p2))
{
throw EvalError(format(s) % sym % p1 % p2);
@ -1172,11 +1178,15 @@ void EvalState::forceFunction(Value & v, const Pos & pos)
}
string EvalState::forceString(Value & v)
string EvalState::forceString(Value & v, const Pos & pos)
{
forceValue(v);
if (v.type != tString)
throwTypeError("value is %1% while a string was expected", v);
if (v.type != tString) {
if (pos)
throwTypeError("value is %1% while a string was expected, at %2%", v, pos);
else
throwTypeError("value is %1% while a string was expected", v);
}
return string(v.string.s);
}
@ -1197,12 +1207,17 @@ string EvalState::forceString(Value & v, PathSet & context)
}
string EvalState::forceStringNoCtx(Value & v)
string EvalState::forceStringNoCtx(Value & v, const Pos & pos)
{
string s = forceString(v);
if (v.string.context)
throwEvalError("the string `%1%' is not allowed to refer to a store path (such as `%2%')",
v.string.s, v.string.context[0]);
string s = forceString(v, pos);
if (v.string.context) {
if (pos)
throwEvalError("the string `%1%' is not allowed to refer to a store path (such as `%2%'), at %3%",
v.string.s, v.string.context[0], pos);
else
throwEvalError("the string `%1%' is not allowed to refer to a store path (such as `%2%')",
v.string.s, v.string.context[0]);
}
return s;
}