libexpr: add expr memory management
with the prepatory work done this mostly means turning plain pointers
into unique_ptrs, with all the associated churn that necessitates. we
might want to change some of these to box_ptrs at some point as well,
but that would be a semantic change that isn't fully appropriate yet.
Change-Id: I0c238c118617420650432f4ed45569baa3e3f413
This commit is contained in:
parent
ad5366c2ad
commit
bcb774688f
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@ -1247,7 +1247,7 @@ Env * ExprAttrs::buildInheritFromEnv(EvalState & state, Env & up)
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inheritEnv.up = &up;
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Displacement displ = 0;
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for (auto from : *inheritFromExprs)
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for (auto & from : *inheritFromExprs)
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inheritEnv.values[displ++] = from->maybeThunk(state, up);
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return &inheritEnv;
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@ -79,7 +79,7 @@ void ExprAttrs::showBindings(const SymbolTable & symbols, std::ostream & str) co
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return sa < sb;
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});
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std::vector<Symbol> inherits;
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std::map<ExprInheritFrom *, std::vector<Symbol>> inheritsFrom;
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std::map<Displacement, std::vector<Symbol>> inheritsFrom;
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for (auto & i : sorted) {
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switch (i->second.kind) {
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case AttrDef::Kind::Plain:
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@ -90,7 +90,7 @@ void ExprAttrs::showBindings(const SymbolTable & symbols, std::ostream & str) co
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case AttrDef::Kind::InheritedFrom: {
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auto & select = dynamic_cast<ExprSelect &>(*i->second.e);
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auto & from = dynamic_cast<ExprInheritFrom &>(*select.e);
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inheritsFrom[&from].push_back(i->first);
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inheritsFrom[from.displ].push_back(i->first);
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break;
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}
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}
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@ -102,7 +102,7 @@ void ExprAttrs::showBindings(const SymbolTable & symbols, std::ostream & str) co
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}
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for (const auto & [from, syms] : inheritsFrom) {
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str << "inherit (";
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(*inheritFromExprs)[from->displ]->show(symbols, str);
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(*inheritFromExprs)[from]->show(symbols, str);
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str << ")";
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for (auto sym : syms) str << " " << symbols[sym];
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str << "; ";
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@ -151,7 +151,7 @@ void ExprLambda::show(const SymbolTable & symbols, std::ostream & str) const
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// the natural Symbol ordering is by creation time, which can lead to the
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// same expression being printed in two different ways depending on its
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// context. always use lexicographic ordering to avoid this.
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for (auto & i : formals->lexicographicOrder(symbols)) {
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for (const Formal & i : formals->lexicographicOrder(symbols)) {
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if (first) first = false; else str << ", ";
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str << symbols[i.name];
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if (i.def) {
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@ -176,7 +176,7 @@ void ExprCall::show(const SymbolTable & symbols, std::ostream & str) const
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{
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str << '(';
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fun->show(symbols, str);
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for (auto e : args) {
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for (auto & e : args) {
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str << ' ';
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e->show(symbols, str);
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}
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@ -375,7 +375,7 @@ std::shared_ptr<const StaticEnv> ExprAttrs::bindInheritSources(
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// not even *have* an expr that grabs anything from this env since it's fully
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// invisible, but the evaluator does not allow for this yet.
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auto inner = std::make_shared<StaticEnv>(nullptr, env.get(), 0);
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for (auto from : *inheritFromExprs)
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for (auto & from : *inheritFromExprs)
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from->bindVars(es, env);
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return inner;
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@ -462,7 +462,7 @@ void ExprCall::bindVars(EvalState & es, const std::shared_ptr<const StaticEnv> &
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es.exprEnvs.insert(std::make_pair(this, env));
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fun->bindVars(es, env);
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for (auto e : args)
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for (auto & e : args)
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e->bindVars(es, env);
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}
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@ -28,9 +28,9 @@ struct StaticEnv;
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struct AttrName
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{
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Symbol symbol;
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Expr * expr;
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std::unique_ptr<Expr> expr;
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AttrName(Symbol s) : symbol(s) {};
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AttrName(Expr * e) : expr(e) {};
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AttrName(std::unique_ptr<Expr> e) : expr(std::move(e)) {};
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};
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typedef std::vector<AttrName> AttrPath;
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@ -157,19 +157,19 @@ struct ExprInheritFrom : ExprVar
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struct ExprSelect : Expr
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{
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PosIdx pos;
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Expr * e, * def;
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std::unique_ptr<Expr> e, def;
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AttrPath attrPath;
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ExprSelect(const PosIdx & pos, Expr * e, AttrPath attrPath, Expr * def) : pos(pos), e(e), def(def), attrPath(std::move(attrPath)) { };
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ExprSelect(const PosIdx & pos, Expr * e, Symbol name) : pos(pos), e(e), def(0) { attrPath.push_back(AttrName(name)); };
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ExprSelect(const PosIdx & pos, std::unique_ptr<Expr> e, AttrPath attrPath, std::unique_ptr<Expr> def) : pos(pos), e(std::move(e)), def(std::move(def)), attrPath(std::move(attrPath)) { };
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ExprSelect(const PosIdx & pos, std::unique_ptr<Expr> e, Symbol name) : pos(pos), e(std::move(e)) { attrPath.push_back(AttrName(name)); };
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PosIdx getPos() const override { return pos; }
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COMMON_METHODS
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};
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struct ExprOpHasAttr : Expr
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{
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Expr * e;
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std::unique_ptr<Expr> e;
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AttrPath attrPath;
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ExprOpHasAttr(Expr * e, AttrPath attrPath) : e(e), attrPath(std::move(attrPath)) { };
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ExprOpHasAttr(std::unique_ptr<Expr> e, AttrPath attrPath) : e(std::move(e)), attrPath(std::move(attrPath)) { };
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PosIdx getPos() const override { return e->getPos(); }
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COMMON_METHODS
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};
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@ -189,11 +189,11 @@ struct ExprAttrs : Expr
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};
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Kind kind;
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Expr * e;
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std::unique_ptr<Expr> e;
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PosIdx pos;
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Displacement displ; // displacement
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AttrDef(Expr * e, const PosIdx & pos, Kind kind = Kind::Plain)
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: kind(kind), e(e), pos(pos) { };
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AttrDef(std::unique_ptr<Expr> e, const PosIdx & pos, Kind kind = Kind::Plain)
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: kind(kind), e(std::move(e)), pos(pos) { };
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AttrDef() { };
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template<typename T>
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@ -212,12 +212,12 @@ struct ExprAttrs : Expr
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};
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typedef std::map<Symbol, AttrDef> AttrDefs;
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AttrDefs attrs;
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std::unique_ptr<std::vector<Expr *>> inheritFromExprs;
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std::unique_ptr<std::vector<std::unique_ptr<Expr>>> inheritFromExprs;
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struct DynamicAttrDef {
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Expr * nameExpr, * valueExpr;
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std::unique_ptr<Expr> nameExpr, valueExpr;
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PosIdx pos;
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DynamicAttrDef(Expr * nameExpr, Expr * valueExpr, const PosIdx & pos)
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: nameExpr(nameExpr), valueExpr(valueExpr), pos(pos) { };
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DynamicAttrDef(std::unique_ptr<Expr> nameExpr, std::unique_ptr<Expr> valueExpr, const PosIdx & pos)
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: nameExpr(std::move(nameExpr)), valueExpr(std::move(valueExpr)), pos(pos) { };
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};
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typedef std::vector<DynamicAttrDef> DynamicAttrDefs;
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DynamicAttrDefs dynamicAttrs;
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@ -234,7 +234,7 @@ struct ExprAttrs : Expr
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struct ExprList : Expr
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{
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std::vector<Expr *> elems;
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std::vector<std::unique_ptr<Expr>> elems;
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ExprList() { };
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COMMON_METHODS
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Value * maybeThunk(EvalState & state, Env & env) override;
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@ -249,7 +249,7 @@ struct Formal
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{
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PosIdx pos;
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Symbol name;
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Expr * def;
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std::unique_ptr<Expr> def;
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};
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/** Attribute set destructuring in arguments of a lambda, if present */
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@ -266,9 +266,9 @@ struct Formals
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return it != formals.end() && it->name == arg;
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}
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std::vector<Formal> lexicographicOrder(const SymbolTable & symbols) const
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std::vector<std::reference_wrapper<const Formal>> lexicographicOrder(const SymbolTable & symbols) const
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{
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std::vector<Formal> result(formals.begin(), formals.end());
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std::vector<std::reference_wrapper<const Formal>> result(formals.begin(), formals.end());
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std::sort(result.begin(), result.end(),
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[&] (const Formal & a, const Formal & b) {
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std::string_view sa = symbols[a.name], sb = symbols[b.name];
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@ -292,14 +292,14 @@ struct ExprLambda : Expr
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Symbol arg;
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/** Formals are present when the lambda destructures an attr set as
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* argument, with or without ellipsis */
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Formals * formals;
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Expr * body;
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ExprLambda(PosIdx pos, Symbol arg, Formals * formals, Expr * body)
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: pos(pos), arg(arg), formals(formals), body(body)
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std::unique_ptr<Formals> formals;
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std::unique_ptr<Expr> body;
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ExprLambda(PosIdx pos, Symbol arg, std::unique_ptr<Formals> formals, std::unique_ptr<Expr> body)
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: pos(pos), arg(arg), formals(std::move(formals)), body(std::move(body))
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{
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};
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ExprLambda(PosIdx pos, Formals * formals, Expr * body)
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: pos(pos), formals(formals), body(body)
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ExprLambda(PosIdx pos, std::unique_ptr<Formals> formals, std::unique_ptr<Expr> body)
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: pos(pos), formals(std::move(formals)), body(std::move(body))
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{
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}
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void setName(Symbol name) override;
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@ -336,11 +336,11 @@ struct ExprLambda : Expr
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struct ExprCall : Expr
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{
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Expr * fun;
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std::vector<Expr *> args;
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std::unique_ptr<Expr> fun;
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std::vector<std::unique_ptr<Expr>> args;
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PosIdx pos;
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ExprCall(const PosIdx & pos, Expr * fun, std::vector<Expr *> && args)
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: fun(fun), args(std::move(args)), pos(pos)
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ExprCall(const PosIdx & pos, std::unique_ptr<Expr> fun, std::vector<std::unique_ptr<Expr>> && args)
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: fun(std::move(fun)), args(std::move(args)), pos(pos)
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{ }
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PosIdx getPos() const override { return pos; }
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COMMON_METHODS
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@ -348,19 +348,19 @@ struct ExprCall : Expr
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struct ExprLet : Expr
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{
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ExprAttrs * attrs;
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Expr * body;
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ExprLet(ExprAttrs * attrs, Expr * body) : attrs(attrs), body(body) { };
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std::unique_ptr<ExprAttrs> attrs;
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std::unique_ptr<Expr> body;
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ExprLet(std::unique_ptr<ExprAttrs> attrs, std::unique_ptr<Expr> body) : attrs(std::move(attrs)), body(std::move(body)) { };
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COMMON_METHODS
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};
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struct ExprWith : Expr
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{
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PosIdx pos;
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Expr * attrs, * body;
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std::unique_ptr<Expr> attrs, body;
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size_t prevWith;
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ExprWith * parentWith;
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ExprWith(const PosIdx & pos, Expr * attrs, Expr * body) : pos(pos), attrs(attrs), body(body) { };
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ExprWith(const PosIdx & pos, std::unique_ptr<Expr> attrs, std::unique_ptr<Expr> body) : pos(pos), attrs(std::move(attrs)), body(std::move(body)) { };
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PosIdx getPos() const override { return pos; }
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COMMON_METHODS
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};
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@ -368,8 +368,8 @@ struct ExprWith : Expr
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struct ExprIf : Expr
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{
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PosIdx pos;
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Expr * cond, * then, * else_;
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ExprIf(const PosIdx & pos, Expr * cond, Expr * then, Expr * else_) : pos(pos), cond(cond), then(then), else_(else_) { };
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std::unique_ptr<Expr> cond, then, else_;
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ExprIf(const PosIdx & pos, std::unique_ptr<Expr> cond, std::unique_ptr<Expr> then, std::unique_ptr<Expr> else_) : pos(pos), cond(std::move(cond)), then(std::move(then)), else_(std::move(else_)) { };
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PosIdx getPos() const override { return pos; }
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COMMON_METHODS
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};
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@ -377,16 +377,16 @@ struct ExprIf : Expr
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struct ExprAssert : Expr
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{
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PosIdx pos;
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Expr * cond, * body;
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ExprAssert(const PosIdx & pos, Expr * cond, Expr * body) : pos(pos), cond(cond), body(body) { };
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std::unique_ptr<Expr> cond, body;
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ExprAssert(const PosIdx & pos, std::unique_ptr<Expr> cond, std::unique_ptr<Expr> body) : pos(pos), cond(std::move(cond)), body(std::move(body)) { };
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PosIdx getPos() const override { return pos; }
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COMMON_METHODS
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};
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struct ExprOpNot : Expr
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{
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Expr * e;
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ExprOpNot(Expr * e) : e(e) { };
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std::unique_ptr<Expr> e;
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ExprOpNot(std::unique_ptr<Expr> e) : e(std::move(e)) { };
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PosIdx getPos() const override { return e->getPos(); }
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COMMON_METHODS
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};
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@ -395,9 +395,9 @@ struct ExprOpNot : Expr
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struct name : Expr \
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{ \
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PosIdx pos; \
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Expr * e1, * e2; \
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name(Expr * e1, Expr * e2) : e1(e1), e2(e2) { }; \
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name(const PosIdx & pos, Expr * e1, Expr * e2) : pos(pos), e1(e1), e2(e2) { }; \
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std::unique_ptr<Expr> e1, e2; \
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name(std::unique_ptr<Expr> e1, std::unique_ptr<Expr> e2) : e1(std::move(e1)), e2(std::move(e2)) { }; \
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name(const PosIdx & pos, std::unique_ptr<Expr> e1, std::unique_ptr<Expr> e2) : pos(pos), e1(std::move(e1)), e2(std::move(e2)) { }; \
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void show(const SymbolTable & symbols, std::ostream & str) const override \
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{ \
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str << "("; e1->show(symbols, str); str << " " s " "; e2->show(symbols, str); str << ")"; \
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@ -422,8 +422,8 @@ struct ExprConcatStrings : Expr
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{
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PosIdx pos;
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bool forceString;
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std::vector<std::pair<PosIdx, Expr *>> es;
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ExprConcatStrings(const PosIdx & pos, bool forceString, std::vector<std::pair<PosIdx, Expr *>> es)
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std::vector<std::pair<PosIdx, std::unique_ptr<Expr>>> es;
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ExprConcatStrings(const PosIdx & pos, bool forceString, std::vector<std::pair<PosIdx, std::unique_ptr<Expr>>> es)
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: pos(pos), forceString(forceString), es(std::move(es)) { };
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PosIdx getPos() const override { return pos; }
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COMMON_METHODS
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@ -49,10 +49,10 @@ struct ParserState
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[[nodiscard]] ParseError dupAttr(const AttrPath & attrPath, const PosIdx pos, const PosIdx prevPos);
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[[nodiscard]] ParseError dupAttr(Symbol attr, const PosIdx pos, const PosIdx prevPos);
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[[nodiscard]] std::optional<ParseError> addAttr(ExprAttrs * attrs, AttrPath && attrPath, Expr * e, const PosIdx pos);
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[[nodiscard]] std::optional<ParseError> addAttr(ExprAttrs * attrs, AttrPath && attrPath, std::unique_ptr<Expr> e, const PosIdx pos);
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[[nodiscard]] std::optional<ParseError> validateFormals(Formals * formals, PosIdx pos = noPos, Symbol arg = {});
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Expr * stripIndentation(const PosIdx pos,
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std::vector<std::pair<PosIdx, std::variant<Expr *, StringToken>>> && es);
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std::unique_ptr<Expr> stripIndentation(const PosIdx pos,
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std::vector<std::pair<PosIdx, std::variant<std::unique_ptr<Expr>, StringToken>>> && es);
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PosIdx at(const ParserLocation & loc);
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};
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@ -73,7 +73,7 @@ inline ParseError ParserState::dupAttr(Symbol attr, const PosIdx pos, const PosI
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});
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}
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inline std::optional<ParseError> ParserState::addAttr(ExprAttrs * attrs, AttrPath && attrPath, Expr * e, const PosIdx pos)
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inline std::optional<ParseError> ParserState::addAttr(ExprAttrs * attrs, AttrPath && attrPath, std::unique_ptr<Expr> e, const PosIdx pos)
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{
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AttrPath::iterator i;
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// All attrpaths have at least one attr
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@ -85,20 +85,25 @@ inline std::optional<ParseError> ParserState::addAttr(ExprAttrs * attrs, AttrPat
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ExprAttrs::AttrDefs::iterator j = attrs->attrs.find(i->symbol);
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if (j != attrs->attrs.end()) {
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if (j->second.kind != ExprAttrs::AttrDef::Kind::Inherited) {
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ExprAttrs * attrs2 = dynamic_cast<ExprAttrs *>(j->second.e);
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if (!attrs2) return dupAttr({attrPath.begin(), i + 1}, pos, j->second.pos);
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ExprAttrs * attrs2 = dynamic_cast<ExprAttrs *>(j->second.e.get());
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if (!attrs2) {
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attrPath.erase(i + 1, attrPath.end());
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return dupAttr(attrPath, pos, j->second.pos);
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}
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attrs = attrs2;
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} else
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return dupAttr({attrPath.begin(), i + 1}, pos, j->second.pos);
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} else {
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attrPath.erase(i + 1, attrPath.end());
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return dupAttr(attrPath, pos, j->second.pos);
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}
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} else {
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ExprAttrs * nested = new ExprAttrs;
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attrs->attrs[i->symbol] = ExprAttrs::AttrDef(nested, pos);
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attrs = nested;
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auto next = attrs->attrs.emplace(std::piecewise_construct,
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std::tuple(i->symbol),
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std::tuple(std::make_unique<ExprAttrs>(), pos));
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attrs = static_cast<ExprAttrs *>(next.first->second.e.get());
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}
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} else {
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ExprAttrs *nested = new ExprAttrs;
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attrs->dynamicAttrs.push_back(ExprAttrs::DynamicAttrDef(i->expr, nested, pos));
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attrs = nested;
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auto & next = attrs->dynamicAttrs.emplace_back(std::move(i->expr), std::make_unique<ExprAttrs>(), pos);
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attrs = static_cast<ExprAttrs *>(next.valueExpr.get());
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}
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}
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// Expr insertion.
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@ -110,37 +115,37 @@ inline std::optional<ParseError> ParserState::addAttr(ExprAttrs * attrs, AttrPat
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// e and the expr pointed by the attr path are two attribute sets,
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// we want to merge them.
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// Otherwise, throw an error.
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auto ae = dynamic_cast<ExprAttrs *>(e);
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auto jAttrs = dynamic_cast<ExprAttrs *>(j->second.e);
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auto * ae = dynamic_cast<ExprAttrs *>(e.get());
|
||||
auto * jAttrs = dynamic_cast<ExprAttrs *>(j->second.e.get());
|
||||
if (jAttrs && ae) {
|
||||
if (ae->inheritFromExprs && !jAttrs->inheritFromExprs)
|
||||
jAttrs->inheritFromExprs = std::make_unique<std::vector<Expr *>>();
|
||||
jAttrs->inheritFromExprs = std::make_unique<std::vector<std::unique_ptr<Expr>>>();
|
||||
for (auto & ad : ae->attrs) {
|
||||
auto j2 = jAttrs->attrs.find(ad.first);
|
||||
if (j2 != jAttrs->attrs.end()) // Attr already defined in iAttrs, error.
|
||||
return dupAttr(ad.first, j2->second.pos, ad.second.pos);
|
||||
jAttrs->attrs.emplace(ad.first, ad.second);
|
||||
if (ad.second.kind == ExprAttrs::AttrDef::Kind::InheritedFrom) {
|
||||
auto & sel = dynamic_cast<ExprSelect &>(*ad.second.e);
|
||||
auto & from = dynamic_cast<ExprInheritFrom &>(*sel.e);
|
||||
from.displ += jAttrs->inheritFromExprs->size();
|
||||
}
|
||||
jAttrs->attrs.emplace(ad.first, std::move(ad.second));
|
||||
}
|
||||
jAttrs->dynamicAttrs.insert(jAttrs->dynamicAttrs.end(), ae->dynamicAttrs.begin(), ae->dynamicAttrs.end());
|
||||
if (ae->inheritFromExprs) {
|
||||
jAttrs->inheritFromExprs->insert(jAttrs->inheritFromExprs->end(),
|
||||
ae->inheritFromExprs->begin(), ae->inheritFromExprs->end());
|
||||
}
|
||||
std::ranges::move(ae->dynamicAttrs, std::back_inserter(jAttrs->dynamicAttrs));
|
||||
if (ae->inheritFromExprs)
|
||||
std::ranges::move(*ae->inheritFromExprs, std::back_inserter(*jAttrs->inheritFromExprs));
|
||||
} else {
|
||||
return dupAttr(attrPath, pos, j->second.pos);
|
||||
}
|
||||
} else {
|
||||
// This attr path is not defined. Let's create it.
|
||||
attrs->attrs.emplace(i->symbol, ExprAttrs::AttrDef(e, pos));
|
||||
e->setName(i->symbol);
|
||||
attrs->attrs.emplace(std::piecewise_construct,
|
||||
std::tuple(i->symbol),
|
||||
std::tuple(std::move(e), pos));
|
||||
}
|
||||
} else {
|
||||
attrs->dynamicAttrs.push_back(ExprAttrs::DynamicAttrDef(i->expr, e, pos));
|
||||
attrs->dynamicAttrs.emplace_back(std::move(i->expr), std::move(e), pos);
|
||||
}
|
||||
|
||||
return {};
|
||||
|
|
@ -175,10 +180,10 @@ inline std::optional<ParseError> ParserState::validateFormals(Formals * formals,
|
|||
return {};
|
||||
}
|
||||
|
||||
inline Expr * ParserState::stripIndentation(const PosIdx pos,
|
||||
std::vector<std::pair<PosIdx, std::variant<Expr *, StringToken>>> && es)
|
||||
inline std::unique_ptr<Expr> ParserState::stripIndentation(const PosIdx pos,
|
||||
std::vector<std::pair<PosIdx, std::variant<std::unique_ptr<Expr>, StringToken>>> && es)
|
||||
{
|
||||
if (es.empty()) return new ExprString("");
|
||||
if (es.empty()) return std::make_unique<ExprString>("");
|
||||
|
||||
/* Figure out the minimum indentation. Note that by design
|
||||
whitespace-only final lines are not taken into account. (So
|
||||
|
|
@ -216,17 +221,17 @@ inline Expr * ParserState::stripIndentation(const PosIdx pos,
|
|||
}
|
||||
|
||||
/* Strip spaces from each line. */
|
||||
std::vector<std::pair<PosIdx, Expr *>> es2;
|
||||
std::vector<std::pair<PosIdx, std::unique_ptr<Expr>>> es2;
|
||||
atStartOfLine = true;
|
||||
size_t curDropped = 0;
|
||||
size_t n = es.size();
|
||||
auto i = es.begin();
|
||||
const auto trimExpr = [&] (Expr * e) {
|
||||
const auto trimExpr = [&] (std::unique_ptr<Expr> e) {
|
||||
atStartOfLine = false;
|
||||
curDropped = 0;
|
||||
es2.emplace_back(i->first, e);
|
||||
es2.emplace_back(i->first, std::move(e));
|
||||
};
|
||||
const auto trimString = [&] (const StringToken & t) {
|
||||
const auto trimString = [&] (const StringToken t) {
|
||||
std::string s2;
|
||||
for (size_t j = 0; j < t.l; ++j) {
|
||||
if (atStartOfLine) {
|
||||
|
|
@ -256,17 +261,17 @@ inline Expr * ParserState::stripIndentation(const PosIdx pos,
|
|||
s2 = std::string(s2, 0, p + 1);
|
||||
}
|
||||
|
||||
es2.emplace_back(i->first, new ExprString(std::move(s2)));
|
||||
es2.emplace_back(i->first, std::make_unique<ExprString>(std::move(s2)));
|
||||
};
|
||||
for (; i != es.end(); ++i, --n) {
|
||||
std::visit(overloaded { trimExpr, trimString }, i->second);
|
||||
std::visit(overloaded { trimExpr, trimString }, std::move(i->second));
|
||||
}
|
||||
|
||||
/* If this is a single string, then don't do a concatenation. */
|
||||
if (es2.size() == 1 && dynamic_cast<ExprString *>(es2[0].second)) {
|
||||
return es2[0].second;
|
||||
if (es2.size() == 1 && dynamic_cast<ExprString *>(es2[0].second.get())) {
|
||||
return std::move(es2[0].second);
|
||||
}
|
||||
return new ExprConcatStrings(pos, true, std::move(es2));
|
||||
return std::make_unique<ExprConcatStrings>(pos, true, std::move(es2));
|
||||
}
|
||||
|
||||
inline PosIdx ParserState::at(const ParserLocation & loc)
|
||||
|
|
|
|||
|
|
@ -81,6 +81,21 @@ void yyerror(YYLTYPE * loc, yyscan_t scanner, ParserState * state, const char *
|
|||
});
|
||||
}
|
||||
|
||||
template<typename T>
|
||||
static std::unique_ptr<T> unp(T * e)
|
||||
{
|
||||
return std::unique_ptr<T>(e);
|
||||
}
|
||||
|
||||
template<typename T = std::unique_ptr<nix::Expr>, typename... Args>
|
||||
static std::vector<T> vec(Args && ... args)
|
||||
{
|
||||
std::vector<T> result;
|
||||
result.reserve(sizeof...(Args));
|
||||
(result.emplace_back(std::forward<Args>(args)), ...);
|
||||
return result;
|
||||
}
|
||||
|
||||
|
||||
%}
|
||||
|
||||
|
|
@ -99,8 +114,8 @@ void yyerror(YYLTYPE * loc, yyscan_t scanner, ParserState * state, const char *
|
|||
nix::StringToken str;
|
||||
std::vector<nix::AttrName> * attrNames;
|
||||
std::vector<std::pair<nix::AttrName, nix::PosIdx>> * inheritAttrs;
|
||||
std::vector<std::pair<nix::PosIdx, nix::Expr *>> * string_parts;
|
||||
std::vector<std::pair<nix::PosIdx, std::variant<nix::Expr *, nix::StringToken>>> * ind_string_parts;
|
||||
std::vector<std::pair<nix::PosIdx, std::unique_ptr<nix::Expr>>> * string_parts;
|
||||
std::vector<std::pair<nix::PosIdx, std::variant<std::unique_ptr<nix::Expr>, nix::StringToken>>> * ind_string_parts;
|
||||
}
|
||||
|
||||
%destructor { delete $$; } <e>
|
||||
|
|
@ -158,85 +173,86 @@ expr: expr_function;
|
|||
|
||||
expr_function
|
||||
: ID ':' expr_function
|
||||
{ $$ = new ExprLambda(CUR_POS, state->symbols.create($1), 0, $3); }
|
||||
{ $$ = new ExprLambda(CUR_POS, state->symbols.create($1), nullptr, unp($3)); }
|
||||
| '{' formals '}' ':' expr_function
|
||||
{ if (auto e = state->validateFormals($2)) THROW(*e);
|
||||
$$ = new ExprLambda(CUR_POS, $2, $5); }
|
||||
$$ = new ExprLambda(CUR_POS, unp($2), unp($5));
|
||||
}
|
||||
| '{' formals '}' '@' ID ':' expr_function
|
||||
{
|
||||
auto arg = state->symbols.create($5);
|
||||
if (auto e = state->validateFormals($2, CUR_POS, arg)) THROW(*e, $2, $7);
|
||||
$$ = new ExprLambda(CUR_POS, arg, $2, $7);
|
||||
$$ = new ExprLambda(CUR_POS, arg, unp($2), unp($7));
|
||||
}
|
||||
| ID '@' '{' formals '}' ':' expr_function
|
||||
{
|
||||
auto arg = state->symbols.create($1);
|
||||
if (auto e = state->validateFormals($4, CUR_POS, arg)) THROW(*e, $4, $7);
|
||||
$$ = new ExprLambda(CUR_POS, arg, $4, $7);
|
||||
$$ = new ExprLambda(CUR_POS, arg, unp($4), unp($7));
|
||||
}
|
||||
| ASSERT expr ';' expr_function
|
||||
{ $$ = new ExprAssert(CUR_POS, $2, $4); }
|
||||
{ $$ = new ExprAssert(CUR_POS, unp($2), unp($4)); }
|
||||
| WITH expr ';' expr_function
|
||||
{ $$ = new ExprWith(CUR_POS, $2, $4); }
|
||||
{ $$ = new ExprWith(CUR_POS, unp($2), unp($4)); }
|
||||
| LET binds IN expr_function
|
||||
{ if (!$2->dynamicAttrs.empty())
|
||||
THROW(ParseError({
|
||||
.msg = HintFmt("dynamic attributes not allowed in let"),
|
||||
.pos = state->positions[CUR_POS]
|
||||
}), $2, $4);
|
||||
$$ = new ExprLet($2, $4);
|
||||
$$ = new ExprLet(unp($2), unp($4));
|
||||
}
|
||||
| expr_if
|
||||
;
|
||||
|
||||
expr_if
|
||||
: IF expr THEN expr ELSE expr { $$ = new ExprIf(CUR_POS, $2, $4, $6); }
|
||||
: IF expr THEN expr ELSE expr { $$ = new ExprIf(CUR_POS, unp($2), unp($4), unp($6)); }
|
||||
| expr_op
|
||||
;
|
||||
|
||||
expr_op
|
||||
: '!' expr_op %prec NOT { $$ = new ExprOpNot($2); }
|
||||
| '-' expr_op %prec NEGATE { $$ = new ExprCall(CUR_POS, new ExprVar(state->s.sub), {new ExprInt(0), $2}); }
|
||||
| expr_op EQ expr_op { $$ = new ExprOpEq($1, $3); }
|
||||
| expr_op NEQ expr_op { $$ = new ExprOpNEq($1, $3); }
|
||||
| expr_op '<' expr_op { $$ = new ExprCall(state->at(@2), new ExprVar(state->s.lessThan), {$1, $3}); }
|
||||
| expr_op LEQ expr_op { $$ = new ExprOpNot(new ExprCall(state->at(@2), new ExprVar(state->s.lessThan), {$3, $1})); }
|
||||
| expr_op '>' expr_op { $$ = new ExprCall(state->at(@2), new ExprVar(state->s.lessThan), {$3, $1}); }
|
||||
| expr_op GEQ expr_op { $$ = new ExprOpNot(new ExprCall(state->at(@2), new ExprVar(state->s.lessThan), {$1, $3})); }
|
||||
| expr_op AND expr_op { $$ = new ExprOpAnd(state->at(@2), $1, $3); }
|
||||
| expr_op OR expr_op { $$ = new ExprOpOr(state->at(@2), $1, $3); }
|
||||
| expr_op IMPL expr_op { $$ = new ExprOpImpl(state->at(@2), $1, $3); }
|
||||
| expr_op UPDATE expr_op { $$ = new ExprOpUpdate(state->at(@2), $1, $3); }
|
||||
| expr_op '?' attrpath { $$ = new ExprOpHasAttr($1, std::move(*$3)); delete $3; }
|
||||
: '!' expr_op %prec NOT { $$ = new ExprOpNot(unp($2)); }
|
||||
| '-' expr_op %prec NEGATE { $$ = new ExprCall(CUR_POS, std::make_unique<ExprVar>(state->s.sub), vec(std::make_unique<ExprInt>(0), unp($2))); }
|
||||
| expr_op EQ expr_op { $$ = new ExprOpEq(unp($1), unp($3)); }
|
||||
| expr_op NEQ expr_op { $$ = new ExprOpNEq(unp($1), unp($3)); }
|
||||
| expr_op '<' expr_op { $$ = new ExprCall(state->at(@2), std::make_unique<ExprVar>(state->s.lessThan), vec($1, $3)); }
|
||||
| expr_op LEQ expr_op { $$ = new ExprOpNot(std::make_unique<ExprCall>(state->at(@2), std::make_unique<ExprVar>(state->s.lessThan), vec($3, $1))); }
|
||||
| expr_op '>' expr_op { $$ = new ExprCall(state->at(@2), std::make_unique<ExprVar>(state->s.lessThan), vec($3, $1)); }
|
||||
| expr_op GEQ expr_op { $$ = new ExprOpNot(std::make_unique<ExprCall>(state->at(@2), std::make_unique<ExprVar>(state->s.lessThan), vec($1, $3))); }
|
||||
| expr_op AND expr_op { $$ = new ExprOpAnd(state->at(@2), unp($1), unp($3)); }
|
||||
| expr_op OR expr_op { $$ = new ExprOpOr(state->at(@2), unp($1), unp($3)); }
|
||||
| expr_op IMPL expr_op { $$ = new ExprOpImpl(state->at(@2), unp($1), unp($3)); }
|
||||
| expr_op UPDATE expr_op { $$ = new ExprOpUpdate(state->at(@2), unp($1), unp($3)); }
|
||||
| expr_op '?' attrpath { $$ = new ExprOpHasAttr(unp($1), std::move(*$3)); delete $3; }
|
||||
| expr_op '+' expr_op
|
||||
{ $$ = new ExprConcatStrings(state->at(@2), false, {{state->at(@1), $1}, {state->at(@3), $3}}); }
|
||||
| expr_op '-' expr_op { $$ = new ExprCall(state->at(@2), new ExprVar(state->s.sub), {$1, $3}); }
|
||||
| expr_op '*' expr_op { $$ = new ExprCall(state->at(@2), new ExprVar(state->s.mul), {$1, $3}); }
|
||||
| expr_op '/' expr_op { $$ = new ExprCall(state->at(@2), new ExprVar(state->s.div), {$1, $3}); }
|
||||
| expr_op CONCAT expr_op { $$ = new ExprOpConcatLists(state->at(@2), $1, $3); }
|
||||
{ $$ = new ExprConcatStrings(state->at(@2), false, vec<std::pair<PosIdx, std::unique_ptr<Expr>>>(std::pair(state->at(@1), unp($1)), std::pair(state->at(@3), unp($3)))); }
|
||||
| expr_op '-' expr_op { $$ = new ExprCall(state->at(@2), std::make_unique<ExprVar>(state->s.sub), vec($1, $3)); }
|
||||
| expr_op '*' expr_op { $$ = new ExprCall(state->at(@2), std::make_unique<ExprVar>(state->s.mul), vec($1, $3)); }
|
||||
| expr_op '/' expr_op { $$ = new ExprCall(state->at(@2), std::make_unique<ExprVar>(state->s.div), vec($1, $3)); }
|
||||
| expr_op CONCAT expr_op { $$ = new ExprOpConcatLists(state->at(@2), unp($1), unp($3)); }
|
||||
| expr_app
|
||||
;
|
||||
|
||||
expr_app
|
||||
: expr_app expr_select {
|
||||
if (auto e2 = dynamic_cast<ExprCall *>($1)) {
|
||||
e2->args.push_back($2);
|
||||
e2->args.emplace_back($2);
|
||||
$$ = $1;
|
||||
} else
|
||||
$$ = new ExprCall(CUR_POS, $1, {$2});
|
||||
$$ = new ExprCall(CUR_POS, unp($1), vec(unp($2)));
|
||||
}
|
||||
| expr_select
|
||||
;
|
||||
|
||||
expr_select
|
||||
: expr_simple '.' attrpath
|
||||
{ $$ = new ExprSelect(CUR_POS, $1, std::move(*$3), nullptr); delete $3; }
|
||||
{ $$ = new ExprSelect(CUR_POS, unp($1), std::move(*$3), nullptr); delete $3; }
|
||||
| expr_simple '.' attrpath OR_KW expr_select
|
||||
{ $$ = new ExprSelect(CUR_POS, $1, std::move(*$3), $5); delete $3; }
|
||||
{ $$ = new ExprSelect(CUR_POS, unp($1), std::move(*$3), unp($5)); delete $3; }
|
||||
| /* Backwards compatibility: because Nixpkgs has a rarely used
|
||||
function named ‘or’, allow stuff like ‘map or [...]’. */
|
||||
expr_simple OR_KW
|
||||
{ $$ = new ExprCall(CUR_POS, $1, {new ExprVar(CUR_POS, state->s.or_)}); }
|
||||
{ $$ = new ExprCall(CUR_POS, unp($1), vec(std::make_unique<ExprVar>(CUR_POS, state->s.or_))); }
|
||||
| expr_simple
|
||||
;
|
||||
|
||||
|
|
@ -252,21 +268,21 @@ expr_simple
|
|||
| FLOAT { $$ = new ExprFloat($1); }
|
||||
| '"' string_parts '"' { $$ = $2; }
|
||||
| IND_STRING_OPEN ind_string_parts IND_STRING_CLOSE {
|
||||
$$ = state->stripIndentation(CUR_POS, std::move(*$2));
|
||||
$$ = state->stripIndentation(CUR_POS, std::move(*$2)).release();
|
||||
delete $2;
|
||||
}
|
||||
| path_start PATH_END
|
||||
| path_start string_parts_interpolated PATH_END {
|
||||
$2->insert($2->begin(), {state->at(@1), $1});
|
||||
$2->emplace($2->begin(), state->at(@1), $1);
|
||||
$$ = new ExprConcatStrings(CUR_POS, false, std::move(*$2));
|
||||
delete $2;
|
||||
}
|
||||
| SPATH {
|
||||
std::string path($1.p + 1, $1.l - 2);
|
||||
$$ = new ExprCall(CUR_POS,
|
||||
new ExprVar(state->s.findFile),
|
||||
{new ExprVar(state->s.nixPath),
|
||||
new ExprString(std::move(path))});
|
||||
std::make_unique<ExprVar>(state->s.findFile),
|
||||
vec(std::make_unique<ExprVar>(state->s.nixPath),
|
||||
std::make_unique<ExprString>(std::move(path))));
|
||||
}
|
||||
| URI {
|
||||
static bool noURLLiterals = experimentalFeatureSettings.isEnabled(Xp::NoUrlLiterals);
|
||||
|
|
@ -281,7 +297,7 @@ expr_simple
|
|||
/* Let expressions `let {..., body = ...}' are just desugared
|
||||
into `(rec {..., body = ...}).body'. */
|
||||
| LET '{' binds '}'
|
||||
{ $3->recursive = true; $$ = new ExprSelect(noPos, $3, state->s.body); }
|
||||
{ $3->recursive = true; $$ = new ExprSelect(noPos, unp($3), state->s.body); }
|
||||
| REC '{' binds '}'
|
||||
{ $3->recursive = true; $$ = $3; }
|
||||
| '{' binds '}'
|
||||
|
|
@ -302,9 +318,9 @@ string_parts_interpolated
|
|||
: string_parts_interpolated STR
|
||||
{ $$ = $1; $1->emplace_back(state->at(@2), new ExprString(std::string($2))); }
|
||||
| string_parts_interpolated DOLLAR_CURLY expr '}' { $$ = $1; $1->emplace_back(state->at(@2), $3); }
|
||||
| DOLLAR_CURLY expr '}' { $$ = new std::vector<std::pair<PosIdx, Expr *>>; $$->emplace_back(state->at(@1), $2); }
|
||||
| DOLLAR_CURLY expr '}' { $$ = new std::vector<std::pair<PosIdx, std::unique_ptr<Expr>>>; $$->emplace_back(state->at(@1), $2); }
|
||||
| STR DOLLAR_CURLY expr '}' {
|
||||
$$ = new std::vector<std::pair<PosIdx, Expr *>>;
|
||||
$$ = new std::vector<std::pair<PosIdx, std::unique_ptr<Expr>>>;
|
||||
$$->emplace_back(state->at(@1), new ExprString(std::string($1)));
|
||||
$$->emplace_back(state->at(@2), $3);
|
||||
}
|
||||
|
|
@ -332,14 +348,14 @@ path_start
|
|||
|
||||
ind_string_parts
|
||||
: ind_string_parts IND_STR { $$ = $1; $1->emplace_back(state->at(@2), $2); }
|
||||
| ind_string_parts DOLLAR_CURLY expr '}' { $$ = $1; $1->emplace_back(state->at(@2), $3); }
|
||||
| { $$ = new std::vector<std::pair<PosIdx, std::variant<Expr *, StringToken>>>; }
|
||||
| ind_string_parts DOLLAR_CURLY expr '}' { $$ = $1; $1->emplace_back(state->at(@2), unp($3)); }
|
||||
| { $$ = new std::vector<std::pair<PosIdx, std::variant<std::unique_ptr<Expr>, StringToken>>>; }
|
||||
;
|
||||
|
||||
binds
|
||||
: binds attrpath '=' expr ';'
|
||||
{ $$ = $1;
|
||||
if (auto e = state->addAttr($$, std::move(*$2), $4, state->at(@2))) THROW(*e, $1, $2);
|
||||
if (auto e = state->addAttr($$, std::move(*$2), unp($4), state->at(@2))) THROW(*e, $1, $2);
|
||||
delete $2;
|
||||
}
|
||||
| binds INHERIT attrs ';'
|
||||
|
|
@ -349,23 +365,23 @@ binds
|
|||
THROW(state->dupAttr(i.symbol, iPos, $$->attrs[i.symbol].pos), $1);
|
||||
$$->attrs.emplace(
|
||||
i.symbol,
|
||||
ExprAttrs::AttrDef(new ExprVar(iPos, i.symbol), iPos, ExprAttrs::AttrDef::Kind::Inherited));
|
||||
ExprAttrs::AttrDef(std::make_unique<ExprVar>(iPos, i.symbol), iPos, ExprAttrs::AttrDef::Kind::Inherited));
|
||||
}
|
||||
delete $3;
|
||||
}
|
||||
| binds INHERIT '(' expr ')' attrs ';'
|
||||
{ $$ = $1;
|
||||
if (!$$->inheritFromExprs)
|
||||
$$->inheritFromExprs = std::make_unique<std::vector<Expr *>>();
|
||||
$$->inheritFromExprs->push_back($4);
|
||||
auto from = new nix::ExprInheritFrom(state->at(@4), $$->inheritFromExprs->size() - 1);
|
||||
$$->inheritFromExprs = std::make_unique<std::vector<std::unique_ptr<Expr>>>();
|
||||
$$->inheritFromExprs->push_back(unp($4));
|
||||
for (auto & [i, iPos] : *$6) {
|
||||
if ($$->attrs.find(i.symbol) != $$->attrs.end())
|
||||
THROW(state->dupAttr(i.symbol, iPos, $$->attrs[i.symbol].pos), $1);
|
||||
auto from = std::make_unique<nix::ExprInheritFrom>(state->at(@4), $$->inheritFromExprs->size() - 1);
|
||||
$$->attrs.emplace(
|
||||
i.symbol,
|
||||
ExprAttrs::AttrDef(
|
||||
new ExprSelect(iPos, from, i.symbol),
|
||||
std::make_unique<ExprSelect>(iPos, std::move(from), i.symbol),
|
||||
iPos,
|
||||
ExprAttrs::AttrDef::Kind::InheritedFrom));
|
||||
}
|
||||
|
|
@ -400,7 +416,7 @@ attrpath
|
|||
$$->push_back(AttrName(state->symbols.create(str->s)));
|
||||
delete str;
|
||||
} else
|
||||
$$->push_back(AttrName($3));
|
||||
$$->emplace_back(unp($3));
|
||||
}
|
||||
| attr { $$ = new std::vector<AttrName>; $$->push_back(AttrName(state->symbols.create($1))); }
|
||||
| string_attr
|
||||
|
|
@ -410,7 +426,7 @@ attrpath
|
|||
$$->push_back(AttrName(state->symbols.create(str->s)));
|
||||
delete str;
|
||||
} else
|
||||
$$->push_back(AttrName($1));
|
||||
$$->emplace_back(unp($1));
|
||||
}
|
||||
;
|
||||
|
||||
|
|
@ -425,15 +441,15 @@ string_attr
|
|||
;
|
||||
|
||||
expr_list
|
||||
: expr_list expr_select { $$ = $1; $1->elems.push_back($2); /* !!! dangerous */ }
|
||||
: expr_list expr_select { $$ = $1; $1->elems.emplace_back($2); /* !!! dangerous */ }
|
||||
| { $$ = new ExprList; }
|
||||
;
|
||||
|
||||
formals
|
||||
: formal ',' formals
|
||||
{ $$ = $3; $$->formals.emplace_back(*$1); delete $1; }
|
||||
{ $$ = $3; $$->formals.emplace_back(std::move(*$1)); delete $1; }
|
||||
| formal
|
||||
{ $$ = new Formals; $$->formals.emplace_back(*$1); $$->ellipsis = false; delete $1; }
|
||||
{ $$ = new Formals; $$->formals.emplace_back(std::move(*$1)); $$->ellipsis = false; delete $1; }
|
||||
|
|
||||
{ $$ = new Formals; $$->ellipsis = false; }
|
||||
| ELLIPSIS
|
||||
|
|
@ -441,8 +457,8 @@ formals
|
|||
;
|
||||
|
||||
formal
|
||||
: ID { $$ = new Formal{CUR_POS, state->symbols.create($1), 0}; }
|
||||
| ID '?' expr { $$ = new Formal{CUR_POS, state->symbols.create($1), $3}; }
|
||||
: ID { $$ = new Formal{CUR_POS, state->symbols.create($1), nullptr}; }
|
||||
| ID '?' expr { $$ = new Formal{CUR_POS, state->symbols.create($1), unp($3)}; }
|
||||
;
|
||||
|
||||
%%
|
||||
|
|
|
|||
|
|
@ -2817,7 +2817,7 @@ static void prim_functionArgs(EvalState & state, const PosIdx pos, Value * * arg
|
|||
auto attrs = state.buildBindings(args[0]->lambda.fun->formals->formals.size());
|
||||
for (auto & i : args[0]->lambda.fun->formals->formals)
|
||||
// !!! should optimise booleans (allocate only once)
|
||||
attrs.alloc(i.name, i.pos).mkBool(i.def);
|
||||
attrs.alloc(i.name, i.pos).mkBool(i.def != nullptr);
|
||||
v.mkAttrs(attrs);
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -140,7 +140,7 @@ static void printValueAsXML(EvalState & state, bool strict, bool location,
|
|||
if (v.lambda.fun->arg) attrs["name"] = state.symbols[v.lambda.fun->arg];
|
||||
if (v.lambda.fun->formals->ellipsis) attrs["ellipsis"] = "1";
|
||||
XMLOpenElement _(doc, "attrspat", attrs);
|
||||
for (auto & i : v.lambda.fun->formals->lexicographicOrder(state.symbols))
|
||||
for (const Formal & i : v.lambda.fun->formals->lexicographicOrder(state.symbols))
|
||||
doc.writeEmptyElement("attr", singletonAttrs("name", state.symbols[i.name]));
|
||||
} else
|
||||
doc.writeEmptyElement("varpat", singletonAttrs("name", state.symbols[v.lambda.fun->arg]));
|
||||
|
|
|
|||
|
|
@ -446,7 +446,7 @@ struct CmdFlakeCheck : FlakeCommand
|
|||
if (v.lambda.fun->hasFormals()
|
||||
|| !argHasName(v.lambda.fun->arg, "final"))
|
||||
throw Error("overlay does not take an argument named 'final'");
|
||||
auto body = dynamic_cast<ExprLambda *>(v.lambda.fun->body);
|
||||
auto body = dynamic_cast<ExprLambda *>(v.lambda.fun->body.get());
|
||||
if (!body
|
||||
|| body->hasFormals()
|
||||
|| !argHasName(body->arg, "prev"))
|
||||
|
|
|
|||
|
|
@ -113,10 +113,8 @@ TEST_F(ValuePrintingTests, vLambda)
|
|||
};
|
||||
PosTable::Origin origin = state.positions.addOrigin(std::monostate(), 1);
|
||||
auto posIdx = state.positions.add(origin, 0);
|
||||
auto body = ExprInt(0);
|
||||
auto formals = Formals {};
|
||||
|
||||
ExprLambda eLambda(posIdx, createSymbol("a"), &formals, &body);
|
||||
ExprLambda eLambda(posIdx, createSymbol("a"), std::make_unique<Formals>(), std::make_unique<ExprInt>(0));
|
||||
|
||||
Value vLambda;
|
||||
vLambda.mkLambda(&env, &eLambda);
|
||||
|
|
@ -515,11 +513,10 @@ TEST_F(ValuePrintingTests, ansiColorsDerivationError)
|
|||
|
||||
TEST_F(ValuePrintingTests, ansiColorsAssert)
|
||||
{
|
||||
ExprVar eFalse(state.symbols.create("false"));
|
||||
eFalse.bindVars(state, state.staticBaseEnv);
|
||||
ExprInt eInt(1);
|
||||
|
||||
ExprAssert expr(noPos, &eFalse, &eInt);
|
||||
ExprAssert expr(noPos,
|
||||
std::make_unique<ExprVar>(state.symbols.create("false")),
|
||||
std::make_unique<ExprInt>(1));
|
||||
expr.bindVars(state, state.staticBaseEnv);
|
||||
|
||||
Value v;
|
||||
state.mkThunk_(v, expr);
|
||||
|
|
@ -561,10 +558,8 @@ TEST_F(ValuePrintingTests, ansiColorsLambda)
|
|||
};
|
||||
PosTable::Origin origin = state.positions.addOrigin(std::monostate(), 1);
|
||||
auto posIdx = state.positions.add(origin, 0);
|
||||
auto body = ExprInt(0);
|
||||
auto formals = Formals {};
|
||||
|
||||
ExprLambda eLambda(posIdx, createSymbol("a"), &formals, &body);
|
||||
ExprLambda eLambda(posIdx, createSymbol("a"), std::make_unique<Formals>(), std::make_unique<ExprInt>(0));
|
||||
|
||||
Value vLambda;
|
||||
vLambda.mkLambda(&env, &eLambda);
|
||||
|
|
|
|||
Loading…
Reference in a new issue