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* Updated some more primops.

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This commit is contained in:
Eelco Dolstra 2010-04-16 15:13:47 +00:00
parent 8bb0210fea
commit 5c31995bb8
3 changed files with 37 additions and 58 deletions
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23
src/libexpr/eval.cc
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@ -367,6 +367,14 @@ bool EvalState::evalBool(Env & env, Expr * e)
}
void EvalState::evalAttrs(Env & env, Expr * e, Value & v)
{
eval(env, e, v);
if (v.type != tAttrs)
throwTypeError("value is %1% while an attribute set was expected", showType(v));
}
void Expr::eval(EvalState & state, Env & env, Value & v)
{
abort();
@ -481,8 +489,7 @@ void ExprVar::eval(EvalState & state, Env & env, Value & v)
void ExprSelect::eval(EvalState & state, Env & env, Value & v)
{
Value v2;
state.eval(env, e, v2);
state.forceAttrs(v2); // !!! eval followed by force is slightly inefficient
state.evalAttrs(env, e, v2);
Bindings::iterator i = v2.attrs->find(name);
if (i == v2.attrs->end())
throwEvalError("attribute `%1%' missing", name);
@ -499,8 +506,7 @@ void ExprSelect::eval(EvalState & state, Env & env, Value & v)
void ExprOpHasAttr::eval(EvalState & state, Env & env, Value & v)
{
Value vAttrs;
state.eval(env, e, vAttrs);
state.forceAttrs(vAttrs);
state.evalAttrs(env, e, vAttrs);
mkBool(v, vAttrs.attrs->find(name) != vAttrs.attrs->end());
}
@ -640,8 +646,7 @@ void ExprWith::eval(EvalState & state, Env & env, Value & v)
Env & env2(state.allocEnv(1));
env2.up = &env;
state.eval(env, attrs, env2.values[0]);
state.forceAttrs(env2.values[0]);
state.evalAttrs(env, attrs, env2.values[0]);
/* If there is an enclosing `with', copy all attributes that don't
appear in this `with'. */
@ -725,13 +730,11 @@ void ExprOpImpl::eval(EvalState & state, Env & env, Value & v)
void ExprOpUpdate::eval(EvalState & state, Env & env, Value & v)
{
Value v2;
state.eval(env, e1, v2);
state.forceAttrs(v2);
state.evalAttrs(env, e1, v2);
state.cloneAttrs(v2, v);
state.eval(env, e2, v2);
state.forceAttrs(v2);
state.evalAttrs(env, e2, v2);
foreach (Bindings::iterator, i, *v2.attrs)
mkCopy((*v.attrs)[i->first], i->second);