puck/lix
0
0
Fork 0
forked from lix-project/lix
Code Pull requests Activity

use the same bindings print for ExprAttrs and ExprLet

Browse source 
this also has the effect of sorting let bindings lexicographically
rather than by symbol creation order as was previously done, giving a
better canonicalization in the process.

(cherry picked from commit 6c08fba533)
Change-Id: Ia887f629305645bb8a165fbbc0d32e620912595a
This commit is contained in:
eldritch horrors 2024-03-08 09:51:51 +01:00
parent 1cf0fa0633
commit bf19eebb9b
3 changed files with 12 additions and 13 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

21
src/libexpr/nixexpr.cc
View file

@ -68,10 +68,8 @@ void ExprOpHasAttr::show(const SymbolTable & symbols, std::ostream & str) const
str << ") ? " << showAttrPath(symbols, attrPath) << ")";
}
void ExprAttrs::show(const SymbolTable & symbols, std::ostream & str) const
void ExprAttrs::showBindings(const SymbolTable & symbols, std::ostream & str) const
{
if (recursive) str << "rec ";
str << "{ ";
typedef const decltype(attrs)::value_type * Attr;
std::vector<Attr> sorted;
for (auto & i : attrs) sorted.push_back(&i);
@ -95,6 +93,13 @@ void ExprAttrs::show(const SymbolTable & symbols, std::ostream & str) const
i.valueExpr->show(symbols, str);
str << "; ";
}
}
void ExprAttrs::show(const SymbolTable & symbols, std::ostream & str) const
{
if (recursive) str << "rec ";
str << "{ ";
showBindings(symbols, str);
str << "}";
}
@ -150,15 +155,7 @@ void ExprCall::show(const SymbolTable & symbols, std::ostream & str) const
void ExprLet::show(const SymbolTable & symbols, std::ostream & str) const
{
str << "(let ";
for (auto & i : attrs->attrs)
if (i.second.inherited()) {
str << "inherit " << symbols[i.first] << "; ";
}
else {
str << symbols[i.first] << " = ";
i.second.e->show(symbols, str);
str << "; ";
}
attrs->showBindings(symbols, str);
str << "in ";
body->show(symbols, str);
str << ")";

2
src/libexpr/nixexpr.hh
View file

@ -201,6 +201,8 @@ struct ExprAttrs : Expr
ExprAttrs() : recursive(false) { };
PosIdx getPos() const override { return pos; }
COMMON_METHODS
void showBindings(const SymbolTable & symbols, std::ostream & str) const;
};
struct ExprList : Expr

2
tests/functional/lang/parse-okay-inherits.exp
View file

@ -1 +1 @@
(let c = { }; b = 2; in { a = 1; inherit b ; d = (c).d; e = (c).e; f = 3; })
(let b = 2; c = { }; in { a = 1; inherit b ; d = (c).d; e = (c).e; f = 3; })