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Get rid of some unnecessary ExprConcatStrings nodes in dynamic attrs

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This gives a ~18% speedup in NixOS evaluation (after converting
most calls to hasAttr/getAttr to dynamic attrs).
This commit is contained in:
Eelco Dolstra 2014-10-05 01:04:58 +02:00
parent 1418806969
commit b6809608cc
3 changed files with 18 additions and 25 deletions
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14
src/libexpr/nixexpr.hh
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@ -53,16 +53,15 @@ struct Env;
struct Value;
class EvalState;
struct StaticEnv;
struct ExprConcatStrings;
/* An attribute path is a sequence of attribute names. */
struct AttrName
{
Symbol symbol;
ExprConcatStrings * expr;
Expr * expr;
AttrName(const Symbol & s) : symbol(s) {};
AttrName(ExprConcatStrings * e) : expr(e) {};
AttrName(Expr * e) : expr(e) {};
};
typedef std::vector<AttrName> AttrPath;
@ -173,16 +172,17 @@ struct ExprAttrs : Expr
Expr * e;
Pos pos;
unsigned int displ; // displacement
AttrDef(Expr * e, const Pos & pos, bool inherited=false) : inherited(inherited), e(e), pos(pos) { };
AttrDef(Expr * e, const Pos & pos, bool inherited=false)
: inherited(inherited), e(e), pos(pos) { };
AttrDef() { };
};
typedef std::map<Symbol, AttrDef> AttrDefs;
AttrDefs attrs;
struct DynamicAttrDef {
ExprConcatStrings * nameExpr;
Expr * valueExpr;
Expr * nameExpr, * valueExpr;
Pos pos;
DynamicAttrDef(ExprConcatStrings * nameExpr, Expr * valueExpr, const Pos & pos) : nameExpr(nameExpr), valueExpr(valueExpr), pos(pos) { };
DynamicAttrDef(Expr * nameExpr, Expr * valueExpr, const Pos & pos)
: nameExpr(nameExpr), valueExpr(valueExpr), pos(pos) { };
};
typedef std::vector<DynamicAttrDef> DynamicAttrDefs;
DynamicAttrDefs dynamicAttrs;