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* Store position info for inherited attributes.

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This commit is contained in:
Eelco Dolstra 2010-05-07 12:43:57 +00:00
parent 83d7b89660
commit 01e58adce0
4 changed files with 29 additions and 25 deletions
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22
src/libexpr/eval.cc
View file

@ -430,11 +430,12 @@ void ExprAttrs::eval(EvalState & state, Env & env, Value & v)
/* The inherited attributes, on the other hand, are /* The inherited attributes, on the other hand, are
evaluated in the original environment. */ evaluated in the original environment. */
foreach (list<VarRef>::iterator, i, inherited) { foreach (list<Inherited>::iterator, i, inherited) {
Value & v2 = (*v.attrs)[i->name].value; nix::Attr & a = (*v.attrs)[i->first.name];
Value * v3 = state.lookupVar(&env, *i); Value * v2 = state.lookupVar(&env, i->first);
mkCopy(v2, *v3); mkCopy(a.value, *v2);
mkCopy(env2.values[displ++], *v3); mkCopy(env2.values[displ++], *v2);
a.pos = &i->second;
} }
} }
@ -446,9 +447,10 @@ void ExprAttrs::eval(EvalState & state, Env & env, Value & v)
a.pos = &i->second.second; a.pos = &i->second.second;
} }
foreach (list<VarRef>::iterator, i, inherited) { foreach (list<Inherited>::iterator, i, inherited) {
Value & v2 = (*v.attrs)[i->name].value; nix::Attr & a = (*v.attrs)[i->first.name];
mkCopy(v2, *state.lookupVar(&env, *i)); mkCopy(a.value, *state.lookupVar(&env, i->first));
a.pos = &i->second;
} }
} }
} }
@ -470,8 +472,8 @@ void ExprLet::eval(EvalState & state, Env & env, Value & v)
/* The inherited attributes, on the other hand, are evaluated in /* The inherited attributes, on the other hand, are evaluated in
the original environment. */ the original environment. */
foreach (list<VarRef>::iterator, i, attrs->inherited) foreach (list<ExprAttrs::Inherited>::iterator, i, attrs->inherited)
mkCopy(env2.values[displ++], *state.lookupVar(&env, *i)); mkCopy(env2.values[displ++], *state.lookupVar(&env, i->first));
state.eval(env2, body, v); state.eval(env2, body, v);
} }

24
src/libexpr/nixexpr.cc
View file

@ -55,8 +55,8 @@ void ExprAttrs::show(std::ostream & str)
{ {
if (recursive) str << "rec "; if (recursive) str << "rec ";
str << "{ "; str << "{ ";
foreach (list<VarRef>::iterator, i, inherited) foreach (list<Inherited>::iterator, i, inherited)
str << "inherit " << i->name << "; "; str << "inherit " << i->first.name << "; ";
foreach (Attrs::iterator, i, attrs) foreach (Attrs::iterator, i, attrs)
str << i->first << " = " << *i->second.first << "; "; str << i->first << " = " << *i->second.first << "; ";
str << "}"; str << "}";
@ -91,8 +91,8 @@ void ExprLambda::show(std::ostream & str)
void ExprLet::show(std::ostream & str) void ExprLet::show(std::ostream & str)
{ {
str << "let "; str << "let ";
foreach (list<VarRef>::iterator, i, attrs->inherited) foreach (list<ExprAttrs::Inherited>::iterator, i, attrs->inherited)
str << "inherit " << i->name << "; "; str << "inherit " << i->first.name << "; ";
foreach (ExprAttrs::Attrs::iterator, i, attrs->attrs) foreach (ExprAttrs::Attrs::iterator, i, attrs->attrs)
str << i->first << " = " << *i->second.first << "; "; str << i->first << " = " << *i->second.first << "; ";
str << "in " << *body; str << "in " << *body;
@ -215,9 +215,9 @@ void ExprAttrs::bindVars(const StaticEnv & env)
foreach (ExprAttrs::Attrs::iterator, i, attrs) foreach (ExprAttrs::Attrs::iterator, i, attrs)
newEnv.vars[i->first] = displ++; newEnv.vars[i->first] = displ++;
foreach (list<VarRef>::iterator, i, inherited) { foreach (list<Inherited>::iterator, i, inherited) {
newEnv.vars[i->name] = displ++; newEnv.vars[i->first.name] = displ++;
i->bind(env); i->first.bind(env);
} }
foreach (ExprAttrs::Attrs::iterator, i, attrs) foreach (ExprAttrs::Attrs::iterator, i, attrs)
@ -228,8 +228,8 @@ void ExprAttrs::bindVars(const StaticEnv & env)
foreach (ExprAttrs::Attrs::iterator, i, attrs) foreach (ExprAttrs::Attrs::iterator, i, attrs)
i->second.first->bindVars(env); i->second.first->bindVars(env);
foreach (list<VarRef>::iterator, i, inherited) foreach (list<Inherited>::iterator, i, inherited)
i->bind(env); i->first.bind(env);
} }
} }
@ -267,9 +267,9 @@ void ExprLet::bindVars(const StaticEnv & env)
foreach (ExprAttrs::Attrs::iterator, i, attrs->attrs) foreach (ExprAttrs::Attrs::iterator, i, attrs->attrs)
newEnv.vars[i->first] = displ++; newEnv.vars[i->first] = displ++;
foreach (list<VarRef>::iterator, i, attrs->inherited) { foreach (list<ExprAttrs::Inherited>::iterator, i, attrs->inherited) {
newEnv.vars[i->name] = displ++; newEnv.vars[i->first.name] = displ++;
i->bind(env); i->first.bind(env);
} }
foreach (ExprAttrs::Attrs::iterator, i, attrs->attrs) foreach (ExprAttrs::Attrs::iterator, i, attrs->attrs)

3
src/libexpr/nixexpr.hh
View file

@ -131,9 +131,10 @@ struct ExprAttrs : Expr
{ {
bool recursive; bool recursive;
typedef std::pair<Expr *, Pos> Attr; typedef std::pair<Expr *, Pos> Attr;
typedef std::pair<VarRef, Pos> Inherited;
typedef std::map<Symbol, Attr> Attrs; typedef std::map<Symbol, Attr> Attrs;
Attrs attrs; Attrs attrs;
list<VarRef> inherited; list<Inherited> inherited;
std::map<Symbol, Pos> attrNames; // used during parsing std::map<Symbol, Pos> attrNames; // used during parsing
ExprAttrs() : recursive(false) { }; ExprAttrs() : recursive(false) { };
COMMON_METHODS COMMON_METHODS

5
src/libexpr/parser.y
View file

@ -377,8 +377,9 @@ binds
foreach (vector<Symbol>::iterator, i, *$3) { foreach (vector<Symbol>::iterator, i, *$3) {
if ($$->attrNames.find(*i) != $$->attrNames.end()) if ($$->attrNames.find(*i) != $$->attrNames.end())
dupAttr(*i, makeCurPos(@3, data), $$->attrNames[*i]); dupAttr(*i, makeCurPos(@3, data), $$->attrNames[*i]);
$$->inherited.push_back(*i); Pos pos = makeCurPos(@3, data);
$$->attrNames[*i] = makeCurPos(@3, data); $$->inherited.push_back(ExprAttrs::Inherited(*i, pos));
$$->attrNames[*i] = pos;
} }
} }
| binds INHERIT '(' expr ')' ids ';' | binds INHERIT '(' expr ')' ids ';'