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The expr of AttrNames/DynamicAttrDefs is always an ExprConcatStrings

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This commit is contained in:
Shea Levy 2014-03-09 14:41:02 -04:00 • committed by Eelco Dolstra
parent 908e9ce259
commit 049a379ec6
3 changed files with 10 additions and 12 deletions
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8
src/libexpr/eval.cc
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@ -642,15 +642,13 @@ void ExprAttrs::eval(EvalState & state, Env & env, Value & v)
/* dynamic attrs apply *after* rec and __overrides */
foreach (DynamicAttrDefs::iterator, i, dynamicAttrs) {
Value nameVal;
assert(dynamic_cast<ExprConcatStrings *>(i->nameExpr));
ExprConcatStrings * nameExpr = static_cast<ExprConcatStrings *>(i->nameExpr);
if (nameExpr->es->size() == 1) {
nameExpr->es->front()->eval(state, *dynamicEnv, nameVal);
if (i->nameExpr->es->size() == 1) {
i->nameExpr->es->front()->eval(state, *dynamicEnv, nameVal);
state.forceValue(nameVal);
if (nameVal.type == tNull)
continue;
}
nameExpr->eval(state, *dynamicEnv, nameVal);
i->nameExpr->eval(state, *dynamicEnv, nameVal);
state.forceStringNoCtx(nameVal);
Symbol nameSym = state.symbols.create(nameVal.string.s);
Bindings::iterator j = v.attrs->find(nameSym);