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Be even lazier for the build evaluation

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Now we can not evaluate anything \o/
This commit is contained in:
regnat 2021-06-08 16:05:51 +02:00
parent 30d14b772f
commit c7a232e200
6 changed files with 61 additions and 42 deletions
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29
src/libexpr/eval.cc
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@ -1189,28 +1189,13 @@ void EvalState::updateCacheStats(ValueCache::CacheResult cacheResult)
};
}
struct ExprCastedVar : Expr
{
Value * v;
ExprCastedVar(Value * v) : v(v) {};
void show(std::ostream & str) const override {
std::set<const Value*> active;
printValue(str, active, *v);
}
void bindVars(const StaticEnv & env) override {}
void eval(EvalState & state, Env & env, Value & v) override {
v = std::move(*this->v);
}
Value * maybeThunk(EvalState & state, Env & env) override {
return v;
}
};
bool EvalState::lazyGetAttrField(Value & attrs, const std::vector<Symbol> & selector, const Pos & pos, Value & dest)
{
forceValue(attrs, pos);
auto eval_cache = attrs.getEvalCache();
if (eval_cache.isEmpty()) {
forceValue(attrs, pos);
eval_cache = attrs.getEvalCache();
}
auto [ cacheResult, resultingCursor ] = eval_cache.getValue(*this, selector, dest);
updateCacheStats(cacheResult);
switch (cacheResult.returnCode) {
@ -1242,8 +1227,11 @@ bool EvalState::getAttrField(Value & attrs, const std::vector<Symbol> & selector
{
Pos * pos2 = 0;
forceValue(attrs, pos);
auto eval_cache = attrs.getEvalCache();
if (eval_cache.isEmpty()) {
forceValue(attrs, pos);
eval_cache = attrs.getEvalCache();
}
auto [ cacheResult, resultingCursor ] = eval_cache.getValue(*this, selector, dest);
updateCacheStats(cacheResult);
switch (cacheResult.returnCode) {
@ -1260,6 +1248,7 @@ bool EvalState::getAttrField(Value & attrs, const std::vector<Symbol> & selector
;
}
forceValue(attrs, pos);
Value * vAttrs = &attrs;
try {