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Don't pass Symbol by reference

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Since Symbol is just an integer, passing it by const reference is
never advantageous.
This commit is contained in:
Eelco Dolstra 2022-04-26 13:23:32 +02:00
parent 29e52194a8
commit fab731a9d4
4 changed files with 13 additions and 12 deletions
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4
src/libexpr/attr-set.cc
View file

@ -26,7 +26,7 @@ Bindings * EvalState::allocBindings(size_t capacity)
/* Create a new attribute named 'name' on an existing attribute set stored
in 'vAttrs' and return the newly allocated Value which is associated with
this attribute. */
Value * EvalState::allocAttr(Value & vAttrs, const Symbol & name)
Value * EvalState::allocAttr(Value & vAttrs, Symbol name)
{
Value * v = allocValue();
vAttrs.attrs->push_back(Attr(name, v));
@ -40,7 +40,7 @@ Value * EvalState::allocAttr(Value & vAttrs, std::string_view name)
}
Value & BindingsBuilder::alloc(const Symbol & name, PosIdx pos)
Value & BindingsBuilder::alloc(Symbol name, PosIdx pos)
{
auto value = state.allocValue();
bindings->push_back(Attr(name, value, pos));

6
src/libexpr/attr-set.hh
View file

@ -66,7 +66,7 @@ public:
attrs[size_++] = attr;
}
iterator find(const Symbol & name)
iterator find(Symbol name)
{
Attr key(name, 0);
iterator i = std::lower_bound(begin(), end(), key);
@ -74,7 +74,7 @@ public:
return end();
}
Attr * get(const Symbol & name)
Attr * get(Symbol name)
{
Attr key(name, 0);
iterator i = std::lower_bound(begin(), end(), key);
@ -143,7 +143,7 @@ public:
bindings->push_back(attr);
}
Value & alloc(const Symbol & name, PosIdx pos = noPos);
Value & alloc(Symbol name, PosIdx pos = noPos);
Value & alloc(std::string_view name, PosIdx pos = noPos);

2
src/libexpr/eval.hh
View file

@ -392,7 +392,7 @@ public:
inline Value * allocValue();
inline Env & allocEnv(size_t size);
Value * allocAttr(Value & vAttrs, const Symbol & name);
Value * allocAttr(Value & vAttrs, Symbol name);
Value * allocAttr(Value & vAttrs, std::string_view name);
Bindings * allocBindings(size_t capacity);

13
src/libexpr/nixexpr.hh
View file

@ -128,7 +128,7 @@ struct AttrName
{
Symbol symbol;
Expr * expr;
AttrName(const Symbol & s) : symbol(s) {};
AttrName(Symbol s) : symbol(s) {};
AttrName(Expr * e) : expr(e) {};
};
@ -211,8 +211,8 @@ struct ExprVar : Expr
Level level;
Displacement displ;
ExprVar(const Symbol & name) : name(name) { };
ExprVar(const PosIdx & pos, const Symbol & name) : pos(pos), name(name) { };
ExprVar(Symbol name) : name(name) { };
ExprVar(const PosIdx & pos, Symbol name) : pos(pos), name(name) { };
COMMON_METHODS
Value * maybeThunk(EvalState & state, Env & env);
};
@ -223,7 +223,7 @@ struct ExprSelect : Expr
Expr * e, * def;
AttrPath attrPath;
ExprSelect(const PosIdx & pos, Expr * e, const AttrPath & attrPath, Expr * def) : pos(pos), e(e), def(def), attrPath(attrPath) { };
ExprSelect(const PosIdx & pos, Expr * e, const Symbol & name) : pos(pos), e(e), def(0) { attrPath.push_back(AttrName(name)); };
ExprSelect(const PosIdx & pos, Expr * e, Symbol name) : pos(pos), e(e), def(0) { attrPath.push_back(AttrName(name)); };
COMMON_METHODS
};
@ -283,7 +283,8 @@ struct Formals
Formals_ formals;
bool ellipsis;
bool has(Symbol arg) const {
bool has(Symbol arg) const
{
auto it = std::lower_bound(formals.begin(), formals.end(), arg,
[] (const Formal & f, const Symbol & sym) { return f.name < sym; });
return it != formals.end() && it->name == arg;
@ -450,7 +451,7 @@ struct StaticEnv
vars.erase(it, end);
}
Vars::const_iterator find(const Symbol & name) const
Vars::const_iterator find(Symbol name) const
{
Vars::value_type key(name, 0);
auto i = std::lower_bound(vars.begin(), vars.end(), key);