diff options
Diffstat (limited to 'src/libexpr')
| -rw-r--r-- | src/libexpr/get-drvs.cc | 159 | ||||
| -rw-r--r-- | src/libexpr/get-drvs.hh | 46 |
2 files changed, 118 insertions, 87 deletions
diff --git a/src/libexpr/get-drvs.cc b/src/libexpr/get-drvs.cc index f5d7c189ce18..42776b22ac1c 100644 --- a/src/libexpr/get-drvs.cc +++ b/src/libexpr/get-drvs.cc @@ -2,116 +2,155 @@ #include "util.hh" #include "eval-inline.hh" +#include <cstring> + namespace nix { -string DrvInfo::queryDrvPath(EvalState & state) const +string DrvInfo::queryDrvPath() { if (drvPath == "" && attrs) { - Bindings::iterator i = attrs->find(state.sDrvPath); + Bindings::iterator i = attrs->find(state->sDrvPath); PathSet context; - (string &) drvPath = i != attrs->end() ? state.coerceToPath(*i->value, context) : ""; + drvPath = i != attrs->end() ? state->coerceToPath(*i->value, context) : ""; } return drvPath; } -string DrvInfo::queryOutPath(EvalState & state) const +string DrvInfo::queryOutPath() { if (outPath == "" && attrs) { - Bindings::iterator i = attrs->find(state.sOutPath); + Bindings::iterator i = attrs->find(state->sOutPath); PathSet context; - (string &) outPath = i != attrs->end() ? state.coerceToPath(*i->value, context) : ""; + outPath = i != attrs->end() ? state->coerceToPath(*i->value, context) : ""; } return outPath; } -DrvInfo::Outputs DrvInfo::queryOutputs(EvalState & state) +DrvInfo::Outputs DrvInfo::queryOutputs() { if (outputs.empty()) { /* Get the ‘outputs’ list. */ - Bindings::iterator i = attrs->find(state.sOutputs); - - if (i == attrs->end()) - outputs["out"] = queryOutPath(state); - else { - state.forceList(*i->value); + Bindings::iterator i; + if (attrs && (i = attrs->find(state->sOutputs)) != attrs->end()) { + state->forceList(*i->value); /* For each output... */ for (unsigned int j = 0; j < i->value->list.length; ++j) { /* Evaluate the corresponding set. */ - string name = state.forceStringNoCtx(*i->value->list.elems[j]); - Bindings::iterator out = attrs->find(state.symbols.create(name)); + string name = state->forceStringNoCtx(*i->value->list.elems[j]); + Bindings::iterator out = attrs->find(state->symbols.create(name)); if (out == attrs->end()) continue; // FIXME: throw error? - state.forceAttrs(*out->value); + state->forceAttrs(*out->value); /* And evaluate its ‘outPath’ attribute. */ - Bindings::iterator outPath = out->value->attrs->find(state.sOutPath); + Bindings::iterator outPath = out->value->attrs->find(state->sOutPath); if (outPath == out->value->attrs->end()) continue; // FIXME: throw error? PathSet context; - outputs[name] = state.coerceToPath(*outPath->value, context); + outputs[name] = state->coerceToPath(*outPath->value, context); } - } + } else + outputs["out"] = queryOutPath(); } return outputs; } -string DrvInfo::queryOutputName(EvalState & state) const +string DrvInfo::queryOutputName() { if (outputName == "" && attrs) { - Bindings::iterator i = attrs->find(state.sOutputName); - (string &) outputName = i != attrs->end() ? state.forceStringNoCtx(*i->value) : ""; + Bindings::iterator i = attrs->find(state->sOutputName); + outputName = i != attrs->end() ? state->forceStringNoCtx(*i->value) : ""; } return outputName; } -MetaInfo DrvInfo::queryMetaInfo(EvalState & state) const +Bindings * DrvInfo::getMeta() { - if (metaInfoRead) return meta; + if (meta) return meta; + if (!attrs) return 0; + Bindings::iterator a = attrs->find(state->sMeta); + if (a == attrs->end()) return 0; + state->forceAttrs(*a->value); + meta = a->value->attrs; + return meta; +} - (bool &) metaInfoRead = true; - Bindings::iterator a = attrs->find(state.sMeta); - if (a == attrs->end()) return meta; /* fine, empty meta information */ +StringSet DrvInfo::queryMetaNames() +{ + StringSet res; + if (!getMeta()) return res; + foreach (Bindings::iterator, i, *meta) + res.insert(i->name); + return res; +} - state.forceAttrs(*a->value); - foreach (Bindings::iterator, i, *a->value->attrs) { - MetaValue value; - state.forceValue(*i->value); - if (i->value->type == tString) { - value.type = MetaValue::tpString; - value.stringValue = i->value->string.s; - } else if (i->value->type == tInt) { - value.type = MetaValue::tpInt; - value.intValue = i->value->integer; - } else if (i->value->type == tList) { - value.type = MetaValue::tpStrings; - for (unsigned int j = 0; j < i->value->list.length; ++j) - value.stringValues.push_back(state.forceStringNoCtx(*i->value->list.elems[j])); - } else continue; - ((MetaInfo &) meta)[i->name] = value; - } +Value * DrvInfo::queryMeta(const string & name) +{ + if (!getMeta()) return 0; + Bindings::iterator a = meta->find(state->symbols.create(name)); + if (a == meta->end()) return 0; + state->forceValue(*a->value); + return a->value; +} - return meta; + +string DrvInfo::queryMetaString(const string & name) +{ + Value * v = queryMeta(name); + if (!v || v->type != tString) return ""; + return v->string.s; } -MetaValue DrvInfo::queryMetaInfo(EvalState & state, const string & name) const +int DrvInfo::queryMetaInt(const string & name, int def) { - /* !!! evaluates all meta attributes => inefficient */ - return queryMetaInfo(state)[name]; + Value * v = queryMeta(name); + if (!v) return def; + if (v->type == tInt) return v->integer; + if (v->type == tString) { + /* Backwards compatibility with before we had support for + integer meta fields. */ + int n; + if (string2Int(v->string.s, n)) return n; + } + return def; } -void DrvInfo::setMetaInfo(const MetaInfo & meta) +bool DrvInfo::queryMetaBool(const string & name, bool def) { - metaInfoRead = true; - this->meta = meta; + Value * v = queryMeta(name); + if (!v) return def; + if (v->type == tBool) return v->boolean; + if (v->type == tString) { + /* Backwards compatibility with before we had support for + Boolean meta fields. */ + if (strcmp(v->string.s, "true") == 0) return true; + if (strcmp(v->string.s, "false") == 0) return false; + } + return def; +} + + +void DrvInfo::setMeta(const string & name, Value * v) +{ + getMeta(); + Bindings * old = meta; + meta = new Bindings(); + Symbol sym = state->symbols.create(name); + if (old) + foreach (Bindings::iterator, i, *old) + if (i->name != sym) + meta->push_back(*i); + if (v) meta->push_back(Attr(sym, v)); + meta->sort(); } @@ -136,22 +175,18 @@ static bool getDerivation(EvalState & state, Value & v, if (done.find(v.attrs) != done.end()) return false; done.insert(v.attrs); - DrvInfo drv; - Bindings::iterator i = v.attrs->find(state.sName); /* !!! We really would like to have a decent back trace here. */ if (i == v.attrs->end()) throw TypeError("derivation name missing"); - drv.name = state.forceStringNoCtx(*i->value); Bindings::iterator i2 = v.attrs->find(state.sSystem); - if (i2 == v.attrs->end()) - drv.system = "unknown"; - else - drv.system = state.forceStringNoCtx(*i2->value); - drv.attrs = v.attrs; - - drv.attrPath = attrPath; + DrvInfo drv( + state, + state.forceStringNoCtx(*i->value), + attrPath, + i2 == v.attrs->end() ? "unknown" : state.forceStringNoCtx(*i2->value), + v.attrs); drvs.push_back(drv); return false; @@ -190,8 +225,6 @@ static void getDerivations(EvalState & state, Value & vIn, state.autoCallFunction(autoArgs, vIn, v); /* Process the expression. */ - DrvInfo drv; - if (!getDerivation(state, v, pathPrefix, drvs, done, ignoreAssertionFailures)) ; else if (v.type == tAttrs) { diff --git a/src/libexpr/get-drvs.hh b/src/libexpr/get-drvs.hh index af3998e40024..b5aebc188355 100644 --- a/src/libexpr/get-drvs.hh +++ b/src/libexpr/get-drvs.hh @@ -11,50 +11,50 @@ namespace nix { -struct MetaValue -{ - enum { tpNone, tpString, tpStrings, tpInt } type; - string stringValue; - Strings stringValues; - int intValue; -}; - - -typedef std::map<string, MetaValue> MetaInfo; - - struct DrvInfo { public: typedef std::map<string, Path> Outputs; private: + EvalState * state; + string drvPath; string outPath; string outputName; Outputs outputs; - bool metaInfoRead; - MetaInfo meta; - bool failed; // set if we get an AssertionError + Bindings * attrs, * meta; + + Bindings * getMeta(); + public: string name; string attrPath; /* path towards the derivation */ string system; - /* !!! make this private */ - Bindings * attrs; + DrvInfo(EvalState & state) : state(&state), failed(false), attrs(0), meta(0) { }; + DrvInfo(EvalState & state, const string & name, const string & attrPath, const string & system, Bindings * attrs) + : state(&state), failed(false), attrs(attrs), meta(0), name(name), attrPath(attrPath), system(system) { }; + + string queryDrvPath(); + string queryOutPath(); + string queryOutputName(); + Outputs queryOutputs(); - DrvInfo() : metaInfoRead(false), failed(false), attrs(0) { }; + StringSet queryMetaNames(); + Value * queryMeta(const string & name); + string queryMetaString(const string & name); + int queryMetaInt(const string & name, int def); + bool queryMetaBool(const string & name, bool def); + void setMeta(const string & name, Value * v); - string queryDrvPath(EvalState & state) const; - string queryOutPath(EvalState & state) const; - string queryOutputName(EvalState & state) const; - Outputs queryOutputs(EvalState & state); + /* MetaInfo queryMetaInfo(EvalState & state) const; MetaValue queryMetaInfo(EvalState & state, const string & name) const; + */ void setDrvPath(const string & s) { @@ -66,8 +66,6 @@ public: outPath = s; } - void setMetaInfo(const MetaInfo & meta); - void setFailed() { failed = true; }; bool hasFailed() { return failed; }; }; |