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StaticEnv: Use std::vector instead of std::map

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This commit is contained in:
Eelco Dolstra 2020-02-21 18:31:16 +01:00
parent c4bd6a15c2
commit ab35cbd675
6 changed files with 55 additions and 22 deletions
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25
src/libexpr/nixexpr.cc
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@ -269,7 +269,7 @@ void ExprVar::bindVars(const StaticEnv & env)
if (curEnv->isWith) {
if (withLevel == -1) withLevel = level;
} else {
StaticEnv::Vars::const_iterator i = curEnv->vars.find(name);
auto i = curEnv->find(name);
if (i != curEnv->vars.end()) {
fromWith = false;
this->level = level;
@ -311,14 +311,16 @@ void ExprOpHasAttr::bindVars(const StaticEnv & env)
void ExprAttrs::bindVars(const StaticEnv & env)
{
const StaticEnv * dynamicEnv = &env;
StaticEnv newEnv(false, &env);
StaticEnv newEnv(false, &env, recursive ? attrs.size() : 0);
if (recursive) {
dynamicEnv = &newEnv;
unsigned int displ = 0;
for (auto & i : attrs)
newEnv.vars[i.first] = i.second.displ = displ++;
newEnv.vars.emplace_back(i.first, i.second.displ = displ++);
// No need to sort newEnv since attrs is in sorted order.
for (auto & i : attrs)
i.second.e->bindVars(i.second.inherited ? env : newEnv);
@ -342,15 +344,20 @@ void ExprList::bindVars(const StaticEnv & env)
void ExprLambda::bindVars(const StaticEnv & env)
{
StaticEnv newEnv(false, &env);
StaticEnv newEnv(
false, &env,
(hasFormals() ? formals->formals.size() : 0) +
(arg.empty() ? 0 : 1));
unsigned int displ = 0;
if (!arg.empty()) newEnv.vars[arg] = displ++;
if (!arg.empty()) newEnv.vars.emplace_back(arg, displ++);
if (hasFormals()) {
for (auto & i : formals->formals)
newEnv.vars[i.name] = displ++;
newEnv.vars.emplace_back(i.name, displ++);
newEnv.sort();
for (auto & i : formals->formals)
if (i.def) i.def->bindVars(newEnv);
@ -361,11 +368,13 @@ void ExprLambda::bindVars(const StaticEnv & env)
void ExprLet::bindVars(const StaticEnv & env)
{
StaticEnv newEnv(false, &env);
StaticEnv newEnv(false, &env, attrs->attrs.size());
unsigned int displ = 0;
for (auto & i : attrs->attrs)
newEnv.vars[i.first] = i.second.displ = displ++;
newEnv.vars.emplace_back(i.first, i.second.displ = displ++);
// No need to sort newEnv since attrs->attrs is in sorted order.
for (auto & i : attrs->attrs)
i.second.e->bindVars(i.second.inherited ? env : newEnv);