diff options
Diffstat (limited to 'src/libexpr/primops.cc')
| -rw-r--r-- | src/libexpr/primops.cc | 150 |
1 files changed, 65 insertions, 85 deletions
diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc index 4b7e37e612..31914a65dd 100644 --- a/src/libexpr/primops.cc +++ b/src/libexpr/primops.cc @@ -207,6 +207,7 @@ static void prim_trace(EvalState & state, Value * * args, Value & v) printMsg(lvlError, format("trace: %1%") % e); return evalExpr(state, args[1]); } +#endif /************************************************************* @@ -282,24 +283,21 @@ static void prim_derivationStrict(EvalState & state, Value * * args, Value & v) { startNest(nest, lvlVomit, "evaluating derivation"); - ATermMap attrs; - queryAllAttrs(evalExpr(state, args[0]), attrs, true); + state.forceAttrs(*args[0]); - /* Figure out the name already (for stack backtraces). */ - ATerm posDrvName; - Expr eDrvName = attrs.get(toATerm("name")); - if (!eDrvName) + /* Figure out the name first (for stack backtraces). */ + Bindings::iterator attr = args[0]->attrs->find(toATerm("name")); + if (attr == args[0]->attrs->end()) throw EvalError("required attribute `name' missing"); - if (!matchAttrRHS(eDrvName, eDrvName, posDrvName)) abort(); string drvName; try { - drvName = evalStringNoCtx(state, eDrvName); + drvName = state.forceStringNoCtx(attr->second); } catch (Error & e) { - e.addPrefix(format("while evaluating the derivation attribute `name' at %1%:\n") - % showPos(posDrvName)); + e.addPrefix(format("while evaluating the derivation attribute `name' at <SOMEWHERE>:\n")); + // !!! % showPos(posDrvName)); throw; } - + /* Build the derivation expression by processing the attributes. */ Derivation drv; @@ -308,12 +306,8 @@ static void prim_derivationStrict(EvalState & state, Value * * args, Value & v) string outputHash, outputHashAlgo; bool outputHashRecursive = false; - for (ATermMap::const_iterator i = attrs.begin(); i != attrs.end(); ++i) { - string key = aterm2String(i->key); - ATerm value; - Expr pos; - ATerm rhs = i->value; - if (!matchAttrRHS(rhs, value, pos)) abort(); + foreach (Bindings::iterator, i, *args[0]->attrs) { + string key = aterm2String(i->first); startNest(nest, lvlVomit, format("processing attribute `%1%'") % key); try { @@ -321,15 +315,9 @@ static void prim_derivationStrict(EvalState & state, Value * * args, Value & v) /* The `args' attribute is special: it supplies the command-line arguments to the builder. */ if (key == "args") { - ATermList es; - value = evalExpr(state, value); - if (!matchList(value, es)) { - static bool haveWarned = false; - warnOnce(haveWarned, "the `args' attribute should evaluate to a list"); - es = flattenList(state, value); - } - for (ATermIterator i(es); i; ++i) { - string s = coerceToString(state, *i, context, true); + state.forceList(i->second); + for (unsigned int n = 0; n < i->second.list.length; ++n) { + string s = state.coerceToString(i->second.list.elems[n], context, true); drv.args.push_back(s); } } @@ -337,7 +325,7 @@ static void prim_derivationStrict(EvalState & state, Value * * args, Value & v) /* All other attributes are passed to the builder through the environment. */ else { - string s = coerceToString(state, value, context, true); + string s = state.coerceToString(i->second, context, true); drv.env[key] = s; if (key == "builder") drv.builder = s; else if (key == "system") drv.platform = s; @@ -352,13 +340,12 @@ static void prim_derivationStrict(EvalState & state, Value * * args, Value & v) } } catch (Error & e) { - e.addPrefix(format("while evaluating the derivation attribute `%1%' at %2%:\n") - % key % showPos(pos)); - e.addPrefix(format("while instantiating the derivation named `%1%' at %2%:\n") - % drvName % showPos(posDrvName)); + e.addPrefix(format("while evaluating the derivation attribute `%1%' at <SOMEWHERE>:\n") + % key /* !!! % showPos(pos) */); + e.addPrefix(format("while instantiating the derivation named `%1%' at <SOMEWHERE>:\n") + % drvName /* !!! % showPos(posDrvName) */); throw; } - } /* Everything in the context of the strings in the derivation @@ -466,25 +453,25 @@ static void prim_derivationStrict(EvalState & state, Value * * args, Value & v) state.drvHashes[drvPath] = hashDerivationModulo(state, drv); /* !!! assumes a single output */ - ATermMap outAttrs(2); - outAttrs.set(toATerm("outPath"), - makeAttrRHS(makeStr(outPath, singleton<PathSet>(drvPath)), makeNoPos())); - outAttrs.set(toATerm("drvPath"), - makeAttrRHS(makeStr(drvPath, singleton<PathSet>("=" + drvPath)), makeNoPos())); - - return makeAttrs(outAttrs); + //state.mkAttrs(v); + state.cloneAttrs(*args[0], v); + mkString((*v.attrs)[toATerm("outPath")], outPath, singleton<PathSet>(drvPath)); + mkString((*v.attrs)[toATerm("drvPath")], drvPath, singleton<PathSet>("=" + drvPath)); + mkString((*v.attrs)[toATerm("type")], "derivation"); // !!! remove } static void prim_derivationLazy(EvalState & state, Value * * args, Value & v) { - Expr eAttrs = evalExpr(state, args[0]); - ATermMap attrs; - queryAllAttrs(eAttrs, attrs, true); + state.forceAttrs(*args[0]); + + state.cloneAttrs(*args[0], v); - attrs.set(toATerm("type"), - makeAttrRHS(makeStr("derivation"), makeNoPos())); + mkString((*v.attrs)[toATerm("type")], "derivation"); + /* !!! */ + +#if 0 Expr drvStrict = makeCall(makeVar(toATerm("derivation!")), eAttrs); attrs.set(toATerm("outPath"), @@ -493,8 +480,8 @@ static void prim_derivationLazy(EvalState & state, Value * * args, Value & v) makeAttrRHS(makeSelect(drvStrict, toATerm("drvPath")), makeNoPos())); return makeAttrs(attrs); -} #endif +} /************************************************************* @@ -592,6 +579,7 @@ static void prim_toXML(EvalState & state, Value * * args, Value & v) printTermAsXML(strictEvalExpr(state, args[0]), out, context); return makeStr(out.str(), context); } +#endif /* Store a string in the Nix store as a source file that can be used @@ -599,12 +587,12 @@ static void prim_toXML(EvalState & state, Value * * args, Value & v) static void prim_toFile(EvalState & state, Value * * args, Value & v) { PathSet context; - string name = evalStringNoCtx(state, args[0]); - string contents = evalString(state, args[1], context); + string name = state.forceStringNoCtx(*args[0]); + string contents = state.forceString(*args[1]); // !!! context PathSet refs; - for (PathSet::iterator i = context.begin(); i != context.end(); ++i) { + foreach (PathSet::iterator, i, context) { Path path = *i; if (path.at(0) == '=') path = string(path, 1); if (isDerivation(path)) @@ -619,11 +607,12 @@ static void prim_toFile(EvalState & state, Value * * args, Value & v) /* Note: we don't need to add `context' to the context of the result, since `storePath' itself has references to the paths used in args[1]. */ - - return makeStr(storePath, singleton<PathSet>(storePath)); + + mkString(v, storePath, singleton<PathSet>(storePath)); } +#if 0 struct FilterFromExpr : PathFilter { EvalState & state; @@ -731,10 +720,7 @@ static void prim_removeAttrs(EvalState & state, Value * * args, Value & v) state.forceAttrs(*args[0]); state.forceList(*args[1]); - state.mkAttrs(v); - - foreach (Bindings::iterator, i, *args[0]->attrs) - (*v.attrs)[i->first] = i->second; + state.cloneAttrs(*args[0], v); for (unsigned int i = 0; i < args[1]->list.length; ++i) { state.forceStringNoCtx(args[1]->list.elems[i]); @@ -743,40 +729,32 @@ static void prim_removeAttrs(EvalState & state, Value * * args, Value & v) } -#if 0 /* Builds an attribute set from a list specifying (name, value) pairs. To be precise, a list [{name = "name1"; value = value1;} ... {name = "nameN"; value = valueN;}] is transformed to {name1 = value1; ... nameN = valueN;}. */ static void prim_listToAttrs(EvalState & state, Value * * args, Value & v) { - try { - ATermMap res = ATermMap(); - ATermList list; - list = evalList(state, args[0]); - for (ATermIterator i(list); i; ++i){ - // *i should now contain a pointer to the list item expression - ATermList attrs; - Expr evaledExpr = evalExpr(state, *i); - if (matchAttrs(evaledExpr, attrs)){ - Expr e = evalExpr(state, makeSelect(evaledExpr, toATerm("name"))); - string attr = evalStringNoCtx(state,e); - Expr r = makeSelect(evaledExpr, toATerm("value")); - res.set(toATerm(attr), makeAttrRHS(r, makeNoPos())); - } - else - throw TypeError(format("list element in `listToAttrs' is %s, expected a set { name = \"<name>\"; value = <value>; }") - % showType(evaledExpr)); - } - - return makeAttrs(res); - - } catch (Error & e) { - e.addPrefix(format("in `listToAttrs':\n")); - throw; + state.forceList(*args[0]); + + state.mkAttrs(v); + + for (unsigned int i = 0; i < args[0]->list.length; ++i) { + Value & v2(args[0]->list.elems[i]); + state.forceAttrs(v2); + + Bindings::iterator j = v2.attrs->find(toATerm("name")); + if (j == v2.attrs->end()) + throw TypeError("`name' attribute missing in a call to `listToAttrs'"); + string name = state.forceStringNoCtx(j->second); + + j = v2.attrs->find(toATerm("value")); + if (j == v2.attrs->end()) + throw TypeError("`value' attribute missing in a call to `listToAttrs'"); + + (*v.attrs)[toATerm(name)] = j->second; // !!! sharing? } } -#endif #if 0 @@ -897,7 +875,7 @@ static void prim_map(EvalState & state, Value * * args, Value & v) static void prim_length(EvalState & state, Value * * args, Value & v) { state.forceList(*args[0]); - mkInt(v, v.list.length); + mkInt(v, args[0]->list.length); } @@ -1111,11 +1089,11 @@ void EvalState::createBaseEnv() // Expr <-> String addPrimOp("__exprToString", 1, prim_exprToString); addPrimOp("__stringToExpr", 1, prim_stringToExpr); +#endif // Derivations - addPrimOp("derivation!", 1, prim_derivationStrict); - addPrimOp("derivation", 1, prim_derivationLazy); -#endif + addPrimOp("derivation", 1, prim_derivationStrict); + //addPrimOp("derivation", 1, prim_derivationLazy); // Paths addPrimOp("__toPath", 1, prim_toPath); @@ -1130,7 +1108,9 @@ void EvalState::createBaseEnv() // Creating files #if 0 addPrimOp("__toXML", 1, prim_toXML); +#endif addPrimOp("__toFile", 2, prim_toFile); +#if 0 addPrimOp("__filterSource", 2, prim_filterSource); #endif @@ -1140,8 +1120,8 @@ void EvalState::createBaseEnv() addPrimOp("__hasAttr", 2, prim_hasAttr); addPrimOp("__isAttrs", 1, prim_isAttrs); addPrimOp("removeAttrs", 2, prim_removeAttrs); -#if 0 addPrimOp("__listToAttrs", 1, prim_listToAttrs); +#if 0 addPrimOp("__intersectAttrs", 2, prim_intersectAttrs); addPrimOp("__functionArgs", 1, prim_functionArgs); #endif |