* Refactoring to support domain checks.
This commit is contained in:
Eelco Dolstra
parent
9c3099d328
commit
57751fdb55
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@ -37,15 +37,17 @@ static Expr substArgs(Expr body, ATermList formals, Expr arg)
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ATermVector defsUsed;
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ATermList recAttrs = ATempty;
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for (ATermIterator i(formals); i; ++i) {
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Expr name, def = 0;
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if (!matchNoDefFormal(*i, name) && !matchDefFormal(*i, name, def))
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abort(); /* can't happen */
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Expr name, def; DefaultValue def2; ATerm dummy;
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if (!matchFormal(*i, name, dummy, def2)) abort(); /* can't happen */
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if (!matchDefaultValue(def2, def)) def = 0;
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if (subs[name] == 0) {
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if (def == 0) throw TypeError(format("the argument named `%1%' required by the function is missing")
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% aterm2String(name));
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defsUsed.push_back(name);
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recAttrs = ATinsert(recAttrs, makeBind(name, def, makeNoPos()));
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}
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/* !!! check that the argument are in the valid values list,
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if present */
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}
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/* Make a recursive attribute set out of the (argument-name,
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@ -64,8 +66,8 @@ static Expr substArgs(Expr body, ATermList formals, Expr arg)
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/* One or more actual arguments were not declared as formal
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arguments. Find out which. */
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for (ATermIterator i(formals); i; ++i) {
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Expr name, def;
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matchNoDefFormal(*i, name) || matchDefFormal(*i, name, def);
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Expr name; ATerm d1, d2;
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matchFormal(*i, name, d1, d2);
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subs.remove(name);
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}
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throw TypeError(format("the function does not expect an argument named `%1%'")
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@ -121,12 +121,11 @@ static void getDerivations(EvalState & state, Expr e,
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ATerm body, pos;
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if (matchFunction(e, formals, body, pos)) {
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for (ATermIterator i(formals); i; ++i) {
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Expr name, def;
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if (matchNoDefFormal(*i, name))
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Expr name, def; ATerm values, def2;
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if (!matchFormal(*i, name, values, def2)) abort();
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if (!matchDefaultValue(def2, def))
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throw TypeError(format("cannot auto-call a function that has an argument without a default value (`%1%')")
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% aterm2String(name));
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else if (!matchDefFormal(*i, name, def))
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abort(); /* can't happen */
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}
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getDerivations(state,
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makeCall(e, makeAttrs(ATermMap(0))),
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@ -45,8 +45,13 @@ Inherit | Expr ATermList Pos | ATerm |
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Scope | | Expr |
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NoDefFormal | string | ATerm |
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DefFormal | string Expr | ATerm |
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Formal | string ValidValues DefaultValue | ATerm |
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ValidValues | ATermList | ValidValues |
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UnrestrictedValues | | ValidValues |
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DefaultValue | Expr | DefaultValue |
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NoDefaultValue | | DefaultValue |
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True | | ATerm |
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False | | ATerm |
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@ -134,9 +134,8 @@ Expr substitute(const Substitution & subs, Expr e)
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if (matchFunction(e, formals, body, pos)) {
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ATermMap map(ATgetLength(formals));
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for (ATermIterator i(formals); i; ++i) {
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if (!matchNoDefFormal(*i, name) &&
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!matchDefFormal(*i, name, def))
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abort();
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ATerm d1, d2;
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if (!matchFormal(*i, name, d1, d2)) abort();
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map.set(name, makeRemoved());
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}
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Substitution subs2(&subs, &map);
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@ -221,16 +220,14 @@ static void checkVarDefs2(set<Expr> & done, const ATermMap & defs, Expr e)
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else if (matchFunction(e, formals, body, pos)) {
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ATermMap defs2(defs);
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for (ATermIterator i(formals); i; ++i) {
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Expr deflt;
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if (!matchNoDefFormal(*i, name) &&
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!matchDefFormal(*i, name, deflt))
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abort();
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Expr d1, d2;
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if (!matchFormal(*i, name, d1, d2)) abort();
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defs2.set(name, (ATerm) ATempty);
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}
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for (ATermIterator i(formals); i; ++i) {
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Expr deflt;
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Expr dummy, deflt;
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set<Expr> done2;
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if (matchDefFormal(*i, name, deflt))
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if (matchFormal(*i, name, dummy, deflt)) /* !!! check dummy */
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checkVarDefs2(done2, defs2, deflt);
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}
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set<Expr> done2;
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@ -19,6 +19,9 @@ MakeError(TypeError, EvalError)
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normals forms efficiently. */
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typedef ATerm Expr;
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typedef ATerm DefaultValue;
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typedef ATerm ValidValues;
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typedef ATerm Pos;
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@ -118,10 +118,8 @@ static void checkAttrSets(ATerm e)
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ATermMap names(ATgetLength(formals));
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for (ATermIterator i(formals); i; ++i) {
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ATerm name;
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Expr deflt;
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if (!matchNoDefFormal(*i, name) &&
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!matchDefFormal(*i, name, deflt))
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abort();
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ATerm d1, d2;
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if (!matchFormal(*i, name, d1, d2)) abort();
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if (names.get(name))
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throw EvalError(format("duplicate formal function argument `%1%' at %2%")
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% aterm2String(name) % showPos(pos));
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@ -16,6 +16,8 @@
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#include "lexer-tab.h"
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typedef ATerm Expr;
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typedef ATerm ValidValues;
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typedef ATerm DefaultValue;
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typedef ATerm Pos;
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#include "nixexpr-ast.hh"
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@ -203,8 +205,9 @@ formals
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;
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formal
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: ID { $$ = makeNoDefFormal($1); }
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| ID '?' expr { $$ = makeDefFormal($1, $3); }
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: ID { $$ = makeFormal($1, makeUnrestrictedValues(), makeNoDefaultValue()); }
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// | ID ':' '[' expr_list ']' { $$ = makeDefFormal($1, $3); }
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| ID '?' expr { $$ = makeFormal($1, makeUnrestrictedValues(), makeDefaultValue($3)); }
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;
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%%
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@ -1 +1 @@
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Function([NoDefFormal("x"),NoDefFormal("y"),NoDefFormal("z")],OpPlus(OpPlus(Var("x"),Var("y")),Var("z")),Pos("(string)",1,2))
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Function([Formal("x",UnrestrictedValues,NoDefaultValue),Formal("y",UnrestrictedValues,NoDefaultValue),Formal("z",UnrestrictedValues,NoDefaultValue)],OpPlus(OpPlus(Var("x"),Var("y")),Var("z")),Pos("(string)",1,2))
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@ -1 +1 @@
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Function([NoDefFormal("stdenv"),NoDefFormal("fetchurl")],Call(Select(Var("stdenv"),"mkDerivation"),Attrs([Bind("name",Str("libXi-6.0.1"),Pos("(string)",4,7)),Bind("src",Call(Var("fetchurl"),Attrs([Bind("url",Uri("http://freedesktop.org/~xlibs/release/libXi-6.0.1.tar.bz2"),Pos("(string)",6,8)),Bind("md5",Str("7e935a42428d63a387b3c048be0f2756"),Pos("(string)",7,8))])),Pos("(string)",5,6))])),Pos("(string)",1,2))
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Function([Formal("stdenv",UnrestrictedValues,NoDefaultValue),Formal("fetchurl",UnrestrictedValues,NoDefaultValue)],Call(Select(Var("stdenv"),"mkDerivation"),Attrs([Bind("name",Str("libXi-6.0.1"),Pos("(string)",4,7)),Bind("src",Call(Var("fetchurl"),Attrs([Bind("url",Uri("http://freedesktop.org/~xlibs/release/libXi-6.0.1.tar.bz2"),Pos("(string)",6,8)),Bind("md5",Str("7e935a42428d63a387b3c048be0f2756"),Pos("(string)",7,8))])),Pos("(string)",5,6))])),Pos("(string)",1,2))
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@ -1 +1 @@
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Function([DefFormal("localServer",Var("false")),DefFormal("httpServer",Var("false")),DefFormal("sslSupport",Var("false")),DefFormal("pythonBindings",Var("false")),DefFormal("javaSwigBindings",Var("false")),DefFormal("javahlBindings",Var("false")),NoDefFormal("stdenv"),NoDefFormal("fetchurl"),DefFormal("openssl",Var("null")),DefFormal("httpd",Var("null")),DefFormal("db4",Var("null")),NoDefFormal("expat"),DefFormal("swig",Var("null")),DefFormal("j2sdk",Var("null"))],Assert(OpNEq(Var("expat"),Var("null")),Assert(OpImpl(Var("localServer"),OpNEq(Var("db4"),Var("null"))),Assert(OpImpl(Var("httpServer"),OpAnd(OpNEq(Var("httpd"),Var("null")),OpEq(Select(Var("httpd"),"expat"),Var("expat")))),Assert(OpImpl(Var("sslSupport"),OpAnd(OpNEq(Var("openssl"),Var("null")),OpImpl(Var("httpServer"),OpEq(Select(Var("httpd"),"openssl"),Var("openssl"))))),Assert(OpImpl(Var("pythonBindings"),OpAnd(OpNEq(Var("swig"),Var("null")),Select(Var("swig"),"pythonSupport"))),Assert(OpImpl(Var("javaSwigBindings"),OpAnd(OpNEq(Var("swig"),Var("null")),Select(Var("swig"),"javaSupport"))),Assert(OpImpl(Var("javahlBindings"),OpNEq(Var("j2sdk"),Var("null"))),Call(Select(Var("stdenv"),"mkDerivation"),Attrs([Bind("name",Str("subversion-1.1.1"),Pos("(string)",20,7)),Bind("builder",Path("/foo/bar"),Pos("(string)",22,10)),Bind("src",Call(Var("fetchurl"),Attrs([Bind("url",Uri("http://subversion.tigris.org/tarballs/subversion-1.1.1.tar.bz2"),Pos("(string)",24,8)),Bind("md5",Str("a180c3fe91680389c210c99def54d9e0"),Pos("(string)",25,8))])),Pos("(string)",23,6)),Bind("patches",If(Var("javahlBindings"),List([Path("/javahl.patch")]),List([])),Pos("(string)",31,10)),Bind("openssl",If(Var("sslSupport"),Var("openssl"),Var("null")),Pos("(string)",33,10)),Bind("httpd",If(Var("httpServer"),Var("httpd"),Var("null")),Pos("(string)",34,8)),Bind("db4",If(Var("localServer"),Var("db4"),Var("null")),Pos("(string)",35,6)),Bind("swig",If(OpOr(Var("pythonBindings"),Var("javaSwigBindings")),Var("swig"),Var("null")),Pos("(string)",36,7)),Bind("python",If(Var("pythonBindings"),Select(Var("swig"),"python"),Var("null")),Pos("(string)",37,9)),Bind("j2sdk",If(Var("javaSwigBindings"),Select(Var("swig"),"j2sdk"),If(Var("javahlBindings"),Var("j2sdk"),Var("null"))),Pos("(string)",38,8)),Bind("expat",Var("expat"),Pos("(string)",41,10)),Bind("localServer",Var("localServer"),Pos("(string)",41,10)),Bind("httpServer",Var("httpServer"),Pos("(string)",41,10)),Bind("sslSupport",Var("sslSupport"),Pos("(string)",41,10)),Bind("pythonBindings",Var("pythonBindings"),Pos("(string)",41,10)),Bind("javaSwigBindings",Var("javaSwigBindings"),Pos("(string)",41,10)),Bind("javahlBindings",Var("javahlBindings"),Pos("(string)",41,10))])),Pos("(string)",17,7)),Pos("(string)",16,7)),Pos("(string)",15,7)),Pos("(string)",14,7)),Pos("(string)",13,7)),Pos("(string)",12,7)),Pos("(string)",11,7)),Pos("(string)",1,2))
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Function([Formal("localServer",UnrestrictedValues,DefaultValue(Var("false"))),Formal("httpServer",UnrestrictedValues,DefaultValue(Var("false"))),Formal("sslSupport",UnrestrictedValues,DefaultValue(Var("false"))),Formal("pythonBindings",UnrestrictedValues,DefaultValue(Var("false"))),Formal("javaSwigBindings",UnrestrictedValues,DefaultValue(Var("false"))),Formal("javahlBindings",UnrestrictedValues,DefaultValue(Var("false"))),Formal("stdenv",UnrestrictedValues,NoDefaultValue),Formal("fetchurl",UnrestrictedValues,NoDefaultValue),Formal("openssl",UnrestrictedValues,DefaultValue(Var("null"))),Formal("httpd",UnrestrictedValues,DefaultValue(Var("null"))),Formal("db4",UnrestrictedValues,DefaultValue(Var("null"))),Formal("expat",UnrestrictedValues,NoDefaultValue),Formal("swig",UnrestrictedValues,DefaultValue(Var("null"))),Formal("j2sdk",UnrestrictedValues,DefaultValue(Var("null")))],Assert(OpNEq(Var("expat"),Var("null")),Assert(OpImpl(Var("localServer"),OpNEq(Var("db4"),Var("null"))),Assert(OpImpl(Var("httpServer"),OpAnd(OpNEq(Var("httpd"),Var("null")),OpEq(Select(Var("httpd"),"expat"),Var("expat")))),Assert(OpImpl(Var("sslSupport"),OpAnd(OpNEq(Var("openssl"),Var("null")),OpImpl(Var("httpServer"),OpEq(Select(Var("httpd"),"openssl"),Var("openssl"))))),Assert(OpImpl(Var("pythonBindings"),OpAnd(OpNEq(Var("swig"),Var("null")),Select(Var("swig"),"pythonSupport"))),Assert(OpImpl(Var("javaSwigBindings"),OpAnd(OpNEq(Var("swig"),Var("null")),Select(Var("swig"),"javaSupport"))),Assert(OpImpl(Var("javahlBindings"),OpNEq(Var("j2sdk"),Var("null"))),Call(Select(Var("stdenv"),"mkDerivation"),Attrs([Bind("name",Str("subversion-1.1.1"),Pos("(string)",20,7)),Bind("builder",Path("/foo/bar"),Pos("(string)",22,10)),Bind("src",Call(Var("fetchurl"),Attrs([Bind("url",Uri("http://subversion.tigris.org/tarballs/subversion-1.1.1.tar.bz2"),Pos("(string)",24,8)),Bind("md5",Str("a180c3fe91680389c210c99def54d9e0"),Pos("(string)",25,8))])),Pos("(string)",23,6)),Bind("patches",If(Var("javahlBindings"),List([Path("/javahl.patch")]),List([])),Pos("(string)",31,10)),Bind("openssl",If(Var("sslSupport"),Var("openssl"),Var("null")),Pos("(string)",33,10)),Bind("httpd",If(Var("httpServer"),Var("httpd"),Var("null")),Pos("(string)",34,8)),Bind("db4",If(Var("localServer"),Var("db4"),Var("null")),Pos("(string)",35,6)),Bind("swig",If(OpOr(Var("pythonBindings"),Var("javaSwigBindings")),Var("swig"),Var("null")),Pos("(string)",36,7)),Bind("python",If(Var("pythonBindings"),Select(Var("swig"),"python"),Var("null")),Pos("(string)",37,9)),Bind("j2sdk",If(Var("javaSwigBindings"),Select(Var("swig"),"j2sdk"),If(Var("javahlBindings"),Var("j2sdk"),Var("null"))),Pos("(string)",38,8)),Bind("expat",Var("expat"),Pos("(string)",41,10)),Bind("localServer",Var("localServer"),Pos("(string)",41,10)),Bind("httpServer",Var("httpServer"),Pos("(string)",41,10)),Bind("sslSupport",Var("sslSupport"),Pos("(string)",41,10)),Bind("pythonBindings",Var("pythonBindings"),Pos("(string)",41,10)),Bind("javaSwigBindings",Var("javaSwigBindings"),Pos("(string)",41,10)),Bind("javahlBindings",Var("javahlBindings"),Pos("(string)",41,10))])),Pos("(string)",17,7)),Pos("(string)",16,7)),Pos("(string)",15,7)),Pos("(string)",14,7)),Pos("(string)",13,7)),Pos("(string)",12,7)),Pos("(string)",11,7)),Pos("(string)",1,2))
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