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Remove ExprBuiltin 

It's slower than ExprVar since it doesn't compute a static
displacement. Since we're not using the throw primop in the
implementation of <...> anymore, it's also not really needed.
This commit is contained in:
Eelco Dolstra 2014-05-26 17:14:28 +02:00
parent 62a6eeb1f3
commit d8c061e044
4 changed files with 8 additions and 35 deletions
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11
src/libexpr/eval.cc
View File

@ -1004,17 +1004,6 @@ void ExprOpNot::eval(EvalState & state, Env & env, Value & v)
}
void ExprBuiltin::eval(EvalState & state, Env & env, Value & v)
{
// Not a hot path at all, but would be nice to access state.baseEnv directly
Env *baseEnv = &env;
while (baseEnv->up) baseEnv = baseEnv->up;
Bindings::iterator binding = baseEnv->values[0]->attrs->find(name);
assert(binding != baseEnv->values[0]->attrs->end());
v = *binding->value;
}
void ExprOpEq::eval(EvalState & state, Env & env, Value & v)
{
Value v1; e1->eval(state, env, v1);

9
src/libexpr/nixexpr.cc
View File

@ -123,11 +123,6 @@ void ExprOpNot::show(std::ostream & str)
str << "! " << *e;
}
void ExprBuiltin::show(std::ostream & str)
{
str << "builtins." << name;
}
void ExprConcatStrings::show(std::ostream & str)
{
bool first = true;
@ -342,10 +337,6 @@ void ExprOpNot::bindVars(const StaticEnv & env)
e->bindVars(env);
}
void ExprBuiltin::bindVars(const StaticEnv & env)
{
}
void ExprConcatStrings::bindVars(const StaticEnv & env)
{
foreach (vector<Expr *>::iterator, i, *es)

7
src/libexpr/nixexpr.hh
View File

@ -272,13 +272,6 @@ struct ExprOpNot : Expr
COMMON_METHODS
};
struct ExprBuiltin : Expr
{
Symbol name;
ExprBuiltin(const Symbol & name) : name(name) { };
COMMON_METHODS
};
#define MakeBinOp(name, s) \
struct Expr##name : Expr \
{ \

16
src/libexpr/parser.y
View File

@ -328,13 +328,13 @@ expr_if
expr_op
: '!' expr_op %prec NOT { $$ = new ExprOpNot($2); }
| '-' expr_op %prec NEGATE { $$ = new ExprApp(CUR_POS, new ExprApp(new ExprBuiltin(data->symbols.create("sub")), new ExprInt(0)), $2); }
| '-' expr_op %prec NEGATE { $$ = new ExprApp(CUR_POS, new ExprApp(new ExprVar(data->symbols.create("__sub")), new ExprInt(0)), $2); }
| expr_op EQ expr_op { $$ = new ExprOpEq($1, $3); }
| expr_op NEQ expr_op { $$ = new ExprOpNEq($1, $3); }
| expr_op '<' expr_op { $$ = new ExprApp(CUR_POS, new ExprApp(new ExprBuiltin(data->symbols.create("lessThan")), $1), $3); }
| expr_op LEQ expr_op { $$ = new ExprOpNot(new ExprApp(CUR_POS, new ExprApp(new ExprBuiltin(data->symbols.create("lessThan")), $3), $1)); }
| expr_op '>' expr_op { $$ = new ExprApp(CUR_POS, new ExprApp(new ExprBuiltin(data->symbols.create("lessThan")), $3), $1); }
| expr_op GEQ expr_op { $$ = new ExprOpNot(new ExprApp(CUR_POS, new ExprApp(new ExprBuiltin(data->symbols.create("lessThan")), $1), $3)); }
| expr_op '<' expr_op { $$ = new ExprApp(CUR_POS, new ExprApp(new ExprVar(data->symbols.create("__lessThan")), $1), $3); }
| expr_op LEQ expr_op { $$ = new ExprOpNot(new ExprApp(CUR_POS, new ExprApp(new ExprVar(data->symbols.create("__lessThan")), $3), $1)); }
| expr_op '>' expr_op { $$ = new ExprApp(CUR_POS, new ExprApp(new ExprVar(data->symbols.create("__lessThan")), $3), $1); }
| expr_op GEQ expr_op { $$ = new ExprOpNot(new ExprApp(CUR_POS, new ExprApp(new ExprVar(data->symbols.create("__lessThan")), $1), $3)); }
| expr_op AND expr_op { $$ = new ExprOpAnd(CUR_POS, $1, $3); }
| expr_op OR expr_op { $$ = new ExprOpOr(CUR_POS, $1, $3); }
| expr_op IMPL expr_op { $$ = new ExprOpImpl(CUR_POS, $1, $3); }
@ -346,9 +346,9 @@ expr_op
l->push_back($3);
$$ = new ExprConcatStrings(CUR_POS, false, l);
}
| expr_op '-' expr_op { $$ = new ExprApp(CUR_POS, new ExprApp(new ExprBuiltin(data->symbols.create("sub")), $1), $3); }
| expr_op '*' expr_op { $$ = new ExprApp(CUR_POS, new ExprApp(new ExprBuiltin(data->symbols.create("mul")), $1), $3); }
| expr_op '/' expr_op { $$ = new ExprApp(CUR_POS, new ExprApp(new ExprBuiltin(data->symbols.create("div")), $1), $3); }
| expr_op '-' expr_op { $$ = new ExprApp(CUR_POS, new ExprApp(new ExprVar(data->symbols.create("__sub")), $1), $3); }
| expr_op '*' expr_op { $$ = new ExprApp(CUR_POS, new ExprApp(new ExprVar(data->symbols.create("__mul")), $1), $3); }
| expr_op '/' expr_op { $$ = new ExprApp(CUR_POS, new ExprApp(new ExprVar(data->symbols.create("__div")), $1), $3); }
| expr_op CONCAT expr_op { $$ = new ExprOpConcatLists(CUR_POS, $1, $3); }
| expr_app
;