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* Some better error messages.

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This commit is contained in:
Eelco Dolstra 2006-10-23 16:45:19 +00:00
parent 1d694eef4c
commit dd300fb48d
2 changed files with 12 additions and 5 deletions
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4
src/libexpr/nixexpr.cc
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@ -54,7 +54,7 @@ void queryAllAttrs(Expr e, ATermMap & attrs, bool withPos)
{
ATermList bnds;
if (!matchAttrs(e, bnds))
throw TypeError("attribute set expected");
throw TypeError(format("value is %1% while an attribute set was expected") % showType(e));
for (ATermIterator i(bnds); i; ++i) {
ATerm name;
@ -77,7 +77,7 @@ Expr queryAttr(Expr e, const string & name, ATerm & pos)
{
ATermList bnds;
if (!matchAttrs(e, bnds))
throw TypeError("attribute set expected");
throw TypeError(format("value is %1% while an attribute set was expected") % showType(e));
for (ATermIterator i(bnds); i; ++i) {
ATerm name2, pos2;