void case_21()
#line 118 "Parser.jay"
{
yyVal = TopLevelDecl.NewFunctionDecl(new FunctionDeclData(
(string)yyVals[-2 + yyTop], (FunctionSignature)yyVals[-1 + yyTop],
FSharpOption <BlockData> .Some((BlockData)yyVals[0 + yyTop])));
}
private void Visit(TopLevelDecl d)
{
if (d is LiteralModuleDecl moduleDecl)
{
Visit(moduleDecl);
}
else if (d is ClassDecl classDecl)
{
Visit(classDecl);
}
}
public virtual void Visit(TopLevelDecl topLevelDeclaration)
{
switch (topLevelDeclaration)
{
case ClassDecl classDeclaration:
Visit(classDeclaration);
break;
case ModuleDecl moduleDeclaration:
case DatatypeDecl dataTypeDeclaration:
case ValuetypeDecl valueTypeDeclaration:
case OpaqueTypeDecl opaqueTypeDeclaration:
case NewtypeDecl newTypeDeclaration:
case TypeSynonymDecl typeSynonymDeclaration:
default:
VisitUnknown(topLevelDeclaration, topLevelDeclaration.tok);
break;
}
}
private Symbol?ProcessTopLevelDeclaration(ModuleSymbol moduleSymbol, TopLevelDecl topLevelDeclaration)
{
_cancellationToken.ThrowIfCancellationRequested();
switch (topLevelDeclaration)
{
case ClassDecl classDeclaration:
return(ProcessClass(moduleSymbol, classDeclaration));
case LiteralModuleDecl literalModuleDeclaration:
return(ProcessModule(moduleSymbol, literalModuleDeclaration.ModuleDef));
case ValuetypeDecl valueTypeDeclaration:
return(ProcessValueType(moduleSymbol, valueTypeDeclaration));
default:
_logger.LogWarning("encountered unknown top level declaration {} of type {}", topLevelDeclaration.Name, topLevelDeclaration.GetType());
return(null);
}
}
private Symbol?ProcessTopLevelDeclaration(ModuleSymbol moduleSymbol, TopLevelDecl topLevelDeclaration)
{
switch (topLevelDeclaration)
{
case ClassDecl classDeclaration:
return(ProcessClass(moduleSymbol, classDeclaration));
case LiteralModuleDecl literalModuleDeclaration:
return(ProcessModule(moduleSymbol, literalModuleDeclaration.ModuleDef));
case ValuetypeDecl valueTypeDeclaration:
return(ProcessValueType(moduleSymbol, valueTypeDeclaration));
case DatatypeDecl dataTypeDeclaration:
return(ProcessDataType(moduleSymbol, dataTypeDeclaration));
default:
logger.LogDebug("encountered unknown top level declaration {Name} of type {Type}", topLevelDeclaration.Name, topLevelDeclaration.GetType());
return(null);
}
}
public void AddTopLevelDecl(TopLevelDecl d)
{
module.ArmadaTranslation.TopLevelDecls.Add(d);
}
void CompileTypeLevelDecl(TopLevelDecl d, TextWriter wr)
{
Contract.Requires(d != null);
bool compileIt = true;
if (Attributes.ContainsBool(d.Attributes, "compile", ref compileIt) && !compileIt) {
return;
}
if (d is OpaqueTypeDecl) {
var at = (OpaqueTypeDecl)d;
WriteToken(d.tok);
Error("Opaque type ('{0}') cannot be compiled", wr, at.FullName);
}
else if (d is TypeSynonymDecl) {
// do nothing, just bypass type synonyms in the compiler
}
else if (d is NewtypeDecl) {
var nt = (NewtypeDecl)d;
WriteToken(d.tok);
if (nt.CompileName == "uint64" ||
nt.CompileName == "uint32" ||
nt.CompileName == "byte") {
// Skip SHA256 types.s.dfy definitions of native types. They are unused, but
// are defined in terms of BigInteger, which Kremlin does not support.
j.WriteComment("Allowing types.s.dfy definition of " + nt.CompileName);
}
using (WriteArray()) {
j.WriteValue(KremlinAst.DTypeAlias);
using (WriteArray()) { // (lident * int * typ)
WriteLident(nt.FullName);
j.WriteValue(0); // number of parameters (De Bruijn)
WriteTypeName(nt.BaseType);
}
}
}
else if (d is DatatypeDecl) {
var dt = (DatatypeDecl)d;
WriteToken(d.tok);
if (dt.TypeArgs.Count != 0) {
// system.tuple2<> in sha256 is an example, but unused.
j.WriteComment("WARNING: DatatypeDecl of parameterized type not supported"); // bugbug: implement.
}
else {
// Define the type
if (!CompileDatatypeStruct(dt)) {
// Generate constructor functions for that type, if it is a struct rather than an enum
CompileDatatypeConstructors(dt);
}
}
}
else if (d is IteratorDecl) {
var iter = (IteratorDecl)d;
WriteToken(d.tok);
j.WriteComment("BUGBUG IteratorDecl ignored: " + iter.CompileName); // bugbug: implement
}
else if (d is TraitDecl) {
var trait = (TraitDecl)d;
WriteToken(d.tok);
j.WriteComment("BUGBUG TraitDecl ignored: " + trait.CompileName); // bugbug: implement
}
else if (d is ClassDecl) {
var cl = (ClassDecl)d;
CompileClassMembers(cl);
}
else if (d is ModuleDecl) {
// nop
}
else { Contract.Assert(false); }
}
void SortTopLevelDeclsWorker(TopLevelDecl tld, Declaration d, List<Type> referencedTypes, List<TopLevelDecl> topLevelTypes)
{
if (d is NewtypeDecl) {
var nt = (NewtypeDecl)d;
referencedTypes.Add(nt.BaseType);
if (tld != null) {
topLevelTypes.Add(tld);
}
} else if (d is DatatypeDecl) {
var dt = (DatatypeDecl)d;
foreach (var ctor in dt.Ctors) {
foreach (Formal arg in ctor.Formals) {
if (!arg.IsGhost) {
referencedTypes.Add(arg.Type);
}
}
}
if (tld != null) {
topLevelTypes.Add(tld);
}
}
else if (d is ClassDecl) {
var c = (ClassDecl)d;
foreach (var cd in c.InheritedMembers) {
if (!cd.IsGhost) {
SortTopLevelDeclsWorker(null, cd, referencedTypes, topLevelTypes);
}
}
foreach (MemberDecl member in c.Members) {
if (!member.IsGhost) {
SortTopLevelDeclsWorker(null, member, referencedTypes, topLevelTypes);
}
}
if (tld != null) {
topLevelTypes.Add(tld);
}
}
else if (d is MemberDecl) {
var m = (MemberDecl)d;
if (m is Field) {
var f = (Field)m;
referencedTypes.Add(f.Type);
}
else if (m is Function) {
var f = (Function)m;
foreach (Formal p in f.Formals) {
referencedTypes.Add(p.Type);
}
referencedTypes.Add(f.ResultType);
}
else if (m is Method) {
var meth = (Method)m;
foreach (Formal p in meth.Ins) {
if (!p.IsGhost) {
referencedTypes.Add(p.Type);
}
}
foreach (Formal p in meth.Outs) {
if (!p.IsGhost) {
referencedTypes.Add(p.Type);
}
}
}
}
}
void OtherTypeDecl(ModuleDefinition module, out TopLevelDecl td)
{
IToken id;
Attributes attrs = null;
var eqSupport = TypeParameter.EqualitySupportValue.Unspecified;
var typeArgs = new List<TypeParameter>();
td = null;
Type ty;
Expect(80);
while (la.kind == 46) {
Attribute(ref attrs);
}
NoUSIdent(out id);
if (la.kind == 50) {
Get();
Expect(54);
Expect(51);
eqSupport = TypeParameter.EqualitySupportValue.Required;
if (la.kind == 52) {
GenericParameters(typeArgs);
}
} else if (StartOf(4)) {
if (la.kind == 52) {
GenericParameters(typeArgs);
}
if (la.kind == 67) {
Get();
Type(out ty);
td = new TypeSynonymDecl(id, id.val, typeArgs, module, ty, attrs);
}
} else SynErr(146);
if (td == null) {
td = new OpaqueTypeDecl(id, id.val, module, eqSupport, typeArgs, attrs);
}
if (la.kind == 28) {
while (!(la.kind == 0 || la.kind == 28)) {SynErr(147); Get();}
Get();
errors.Warning(t, "the semi-colon that used to terminate an opaque-type declaration has been deprecated; in the new syntax, just leave off the semi-colon");
}
}
void NewtypeDecl(ModuleDefinition module, out TopLevelDecl td)
{
IToken id, bvId;
Attributes attrs = null;
td = null;
Type baseType = null;
Expression wh;
Expect(79);
while (la.kind == 46) {
Attribute(ref attrs);
}
NoUSIdent(out id);
Expect(67);
if (IsIdentColonOrBar()) {
NoUSIdent(out bvId);
if (la.kind == 21) {
Get();
Type(out baseType);
}
if (baseType == null) { baseType = new OperationTypeProxy(true, true, false, false, false, false); }
Expect(23);
Expression(out wh, false, true);
td = new NewtypeDecl(theVerifyThisFile ? id : new IncludeToken(id), id.val, module, new BoundVar(bvId, bvId.val, baseType), wh, attrs);
} else if (StartOf(3)) {
Type(out baseType);
td = new NewtypeDecl(theVerifyThisFile ? id : new IncludeToken(id), id.val, module, baseType, attrs);
} else SynErr(145);
}
void OtherTypeDecl(DeclModifierData dmod, ModuleDefinition module, out TopLevelDecl td)
{
IToken id, bvId;
Attributes attrs = null;
var eqSupport = TypeParameter.EqualitySupportValue.Unspecified;
var typeArgs = new List<TypeParameter>();
td = null;
Type ty = null;
Expression constraint;
var kind = "Opaque type";
Expect(85);
while (la.kind == 50) {
Attribute(ref attrs);
}
NoUSIdent(out id);
if (la.kind == 54) {
Get();
Expect(58);
Expect(55);
eqSupport = TypeParameter.EqualitySupportValue.Required;
if (la.kind == 56) {
GenericParameters(typeArgs);
}
} else if (StartOf(7)) {
if (la.kind == 56) {
GenericParameters(typeArgs);
}
if (la.kind == 74) {
Get();
if (IsIdentColonOrBar()) {
NoUSIdent(out bvId);
if (la.kind == 22) {
Get();
Type(out ty);
}
if (ty == null) { ty = new InferredTypeProxy(); }
Expect(24);
Expression(out constraint, false, true);
td = new SubsetTypeDecl(id, id.val, typeArgs, module, new BoundVar(bvId, bvId.val, ty), constraint, attrs);
kind = "Subset type";
} else if (StartOf(6)) {
Type(out ty);
td = new TypeSynonymDecl(id, id.val, typeArgs, module, ty, attrs);
kind = "Type synonym";
} else SynErr(160);
}
} else SynErr(161);
if (td == null) {
td = new OpaqueTypeDecl(id, id.val, module, eqSupport, typeArgs, attrs);
}
CheckDeclModifiers(dmod, kind, AllowedDeclModifiers.None);
if (la.kind == 30) {
while (!(la.kind == 0 || la.kind == 30)) {SynErr(162); Get();}
Get();
errors.Deprecated(t, "the semi-colon that used to terminate an opaque-type declaration has been deprecated; in the new syntax, just leave off the semi-colon");
}
}
public void AddTopLevelDecl(TopLevelDecl d, string auxName = null)
{
proofFiles.AddTopLevelDecl(d, auxName);
}
public override TopLevelDecl CloneDeclaration(TopLevelDecl d, ModuleDefinition m)
{
var dd = base.CloneDeclaration(d, m);
if (dd is ModuleExportDecl) {
((ModuleExportDecl)dd).SetupDefaultSignature();
} else if (d is ModuleDecl) {
((ModuleDecl)dd).Signature = ((ModuleDecl)d).Signature;
if (d is ModuleFacadeDecl) {
((ModuleFacadeDecl)dd).OriginalSignature = ((ModuleFacadeDecl)d).OriginalSignature;
}
}
return dd;
}
private void MergeTopLevelDecls(ModuleDefinition m, TopLevelDecl nw, TopLevelDecl d, int index)
{
if (d is ModuleDecl) {
if (!(nw is ModuleDecl)) {
reporter.Error(MessageSource.RefinementTransformer, nw, "a module ({0}) must refine another module", nw.Name);
} else if (d is ModuleExportDecl) {
if (!(nw is ModuleExportDecl)) {
reporter.Error(MessageSource.RefinementTransformer, nw, "a module export ({0}) must refine another export", nw.Name);
} else {
MergeModuleExports((ModuleExportDecl)nw,(ModuleExportDecl)d);
}
} else if (!(d is ModuleFacadeDecl)) {
reporter.Error(MessageSource.RefinementTransformer, nw, "a module ({0}) can only refine a module facade", nw.Name);
} else {
// check that the new module refines the previous declaration
if (!CheckIsRefinement((ModuleDecl)nw, (ModuleFacadeDecl)d))
reporter.Error(MessageSource.RefinementTransformer, nw.tok, "a module ({0}) can only be replaced by a refinement of the original module", d.Name);
}
} else if (d is OpaqueTypeDecl) {
if (nw is ModuleDecl) {
reporter.Error(MessageSource.RefinementTransformer, nw, "a module ({0}) must refine another module", nw.Name);
} else {
bool dDemandsEqualitySupport = ((OpaqueTypeDecl)d).MustSupportEquality;
if (nw is OpaqueTypeDecl) {
if (dDemandsEqualitySupport != ((OpaqueTypeDecl)nw).MustSupportEquality) {
reporter.Error(MessageSource.RefinementTransformer, nw, "type declaration '{0}' is not allowed to change the requirement of supporting equality", nw.Name);
}
if (nw.TypeArgs.Count != d.TypeArgs.Count) {
reporter.Error(MessageSource.RefinementTransformer, nw, "type '{0}' is not allowed to change its number of type parameters (got {1}, expected {2})", nw.Name, nw.TypeArgs.Count, d.TypeArgs.Count);
}
} else if (dDemandsEqualitySupport) {
if (nw is ClassDecl) {
// fine, as long as "nw" takes the right number of type parameters
if (nw.TypeArgs.Count != d.TypeArgs.Count) {
reporter.Error(MessageSource.RefinementTransformer, nw, "opaque type '{0}' is not allowed to be replaced by a class that takes a different number of type parameters (got {1}, expected {2})", nw.Name, nw.TypeArgs.Count, d.TypeArgs.Count);
}
} else if (nw is NewtypeDecl) {
// fine, as long as "nw" does not take any type parameters
if (nw.TypeArgs.Count != 0) {
reporter.Error(MessageSource.RefinementTransformer, nw, "opaque type '{0}', which has {1} type argument{2}, is not allowed to be replaced by a newtype, which takes none", nw.Name, d.TypeArgs.Count, d.TypeArgs.Count == 1 ? "" : "s");
}
} else if (nw is CoDatatypeDecl) {
reporter.Error(MessageSource.RefinementTransformer, nw, "a type declaration that requires equality support cannot be replaced by a codatatype");
} else {
Contract.Assert(nw is IndDatatypeDecl || nw is TypeSynonymDecl);
if (nw.TypeArgs.Count != d.TypeArgs.Count) {
reporter.Error(MessageSource.RefinementTransformer, nw, "opaque type '{0}' is not allowed to be replaced by a type that takes a different number of type parameters (got {1}, expected {2})", nw.Name, nw.TypeArgs.Count, d.TypeArgs.Count);
} else {
// Here, we need to figure out if the new type supports equality. But we won't know about that until resolution has
// taken place, so we defer it until the PostResolve phase.
var udt = UserDefinedType.FromTopLevelDecl(nw.tok, nw);
postTasks.Enqueue(() => {
if (!udt.SupportsEquality) {
reporter.Error(MessageSource.RefinementTransformer, udt.tok, "type '{0}' is used to refine an opaque type with equality support, but '{0}' does not support equality", udt.Name);
}
});
}
}
} else if (d.TypeArgs.Count != nw.TypeArgs.Count) {
reporter.Error(MessageSource.RefinementTransformer, nw, "opaque type '{0}' is not allowed to be replaced by a type that takes a different number of type parameters (got {1}, expected {2})", nw.Name, nw.TypeArgs.Count, d.TypeArgs.Count);
}
}
} else if (nw is OpaqueTypeDecl) {
reporter.Error(MessageSource.RefinementTransformer, nw, "an opaque type declaration ({0}) in a refining module cannot replace a more specific type declaration in the refinement base", nw.Name);
} else if (nw is DatatypeDecl) {
reporter.Error(MessageSource.RefinementTransformer, nw, "a datatype declaration ({0}) in a refinement module can only replace an opaque type declaration", nw.Name);
} else if (nw is IteratorDecl) {
if (d is IteratorDecl) {
m.TopLevelDecls[index] = MergeIterator((IteratorDecl)nw, (IteratorDecl)d);
} else {
reporter.Error(MessageSource.RefinementTransformer, nw, "an iterator declaration ({0}) is a refining module cannot replace a different kind of declaration in the refinement base", nw.Name);
}
} else {
Contract.Assert(nw is ClassDecl);
if (d is DatatypeDecl) {
reporter.Error(MessageSource.RefinementTransformer, nw, "a class declaration ({0}) in a refining module cannot replace a different kind of declaration in the refinement base", nw.Name);
} else {
m.TopLevelDecls[index] = MergeClass((ClassDecl)nw, (ClassDecl)d);
}
}
}
public TopLevelDecl CloneDeclaration(TopLevelDecl d, ModuleDefinition m) {
Contract.Requires(d != null);
Contract.Requires(m != null);
if (d is OpaqueTypeDecl) {
var dd = (OpaqueTypeDecl)d;
return new OpaqueTypeDecl(Tok(dd.tok), dd.Name, m, dd.EqualitySupport, dd.TypeArgs.ConvertAll(CloneTypeParam), CloneAttributes(dd.Attributes), d);
} else if (d is TypeSynonymDecl) {
var dd = (TypeSynonymDecl)d;
var tps = dd.TypeArgs.ConvertAll(CloneTypeParam);
return new TypeSynonymDecl(Tok(dd.tok), dd.Name, tps, m, CloneType(dd.Rhs), CloneAttributes(dd.Attributes), dd);
} else if (d is NewtypeDecl) {
var dd = (NewtypeDecl)d;
if (dd.Var == null) {
return new NewtypeDecl(Tok(dd.tok), dd.Name, m, CloneType(dd.BaseType), CloneAttributes(dd.Attributes), dd);
} else {
return new NewtypeDecl(Tok(dd.tok), dd.Name, m, CloneBoundVar(dd.Var), CloneExpr(dd.Constraint), CloneAttributes(dd.Attributes), dd);
}
} else if (d is TupleTypeDecl) {
var dd = (TupleTypeDecl)d;
return new TupleTypeDecl(dd.Dims, dd.Module);
} else if (d is IndDatatypeDecl) {
var dd = (IndDatatypeDecl)d;
var tps = dd.TypeArgs.ConvertAll(CloneTypeParam);
var ctors = dd.Ctors.ConvertAll(CloneCtor);
var dt = new IndDatatypeDecl(Tok(dd.tok), dd.Name, m, tps, ctors, CloneAttributes(dd.Attributes), dd);
return dt;
} else if (d is CoDatatypeDecl) {
var dd = (CoDatatypeDecl)d;
var tps = dd.TypeArgs.ConvertAll(CloneTypeParam);
var ctors = dd.Ctors.ConvertAll(CloneCtor);
var dt = new CoDatatypeDecl(Tok(dd.tok), dd.Name, m, tps, ctors, CloneAttributes(dd.Attributes), dd);
return dt;
} else if (d is IteratorDecl) {
var dd = (IteratorDecl)d;
var tps = dd.TypeArgs.ConvertAll(CloneTypeParam);
var ins = dd.Ins.ConvertAll(CloneFormal);
var outs = dd.Outs.ConvertAll(CloneFormal);
var reads = CloneSpecFrameExpr(dd.Reads);
var mod = CloneSpecFrameExpr(dd.Modifies);
var decr = CloneSpecExpr(dd.Decreases);
var req = dd.Requires.ConvertAll(CloneMayBeFreeExpr);
var yreq = dd.YieldRequires.ConvertAll(CloneMayBeFreeExpr);
var ens = dd.Ensures.ConvertAll(CloneMayBeFreeExpr);
var yens = dd.YieldEnsures.ConvertAll(CloneMayBeFreeExpr);
var body = CloneBlockStmt(dd.Body);
var iter = new IteratorDecl(Tok(dd.tok), dd.Name, dd.Module,
tps, ins, outs, reads, mod, decr,
req, ens, yreq, yens,
body, CloneAttributes(dd.Attributes), dd.SignatureEllipsis);
return iter;
} else if (d is TraitDecl) {
if (d is DefaultClassDecl) {
var dd = (TraitDecl)d;
var tps = dd.TypeArgs.ConvertAll(CloneTypeParam);
var mm = dd.Members.ConvertAll(CloneMember);
var cl = new DefaultClassDecl(m, mm);
return cl;
} else {
var dd = (TraitDecl)d;
var tps = dd.TypeArgs.ConvertAll(CloneTypeParam);
var mm = dd.Members.ConvertAll(CloneMember);
var cl = new TraitDecl(Tok(dd.tok), dd.Name, m, tps, mm, CloneAttributes(dd.Attributes), dd);
return cl;
}
} else if (d is ClassDecl) {
var dd = (ClassDecl)d;
var tps = dd.TypeArgs.ConvertAll(CloneTypeParam);
var mm = dd.Members.ConvertAll(CloneMember);
if (d is DefaultClassDecl) {
return new DefaultClassDecl(m, mm, ((DefaultClassDecl)d));
} else {
return new ClassDecl(Tok(dd.tok), dd.Name, m, tps, mm, CloneAttributes(dd.Attributes), dd.TraitsTyp.ConvertAll(CloneType), dd);
}
} else if (d is ModuleDecl) {
if (d is LiteralModuleDecl) {
var l = new LiteralModuleDecl(((LiteralModuleDecl)d).ModuleDef, m);
l.Signature = ((ModuleDecl)d).Signature;
return l;
} else if (d is AliasModuleDecl) {
var a = (AliasModuleDecl)d;
var alias = new AliasModuleDecl(a.Path, a.tok, m, a.Opened);
alias.Signature = a.Signature;
return alias;
} else if (d is ModuleFacadeDecl) {
var a = (ModuleFacadeDecl)d;
var abs = new ModuleFacadeDecl(a.Path, a.tok, m, a.CompilePath, a.Opened);
abs.Signature = a.Signature;
abs.OriginalSignature = a.OriginalSignature;
return abs;
} else if (d is ModuleExportDecl) {
var a = (ModuleExportDecl)d;
var export = new ModuleExportDecl(a.tok, m, a.IsDefault, a.Exports, a.Extends);
export.Signature = a.Signature;
return export;
} else {
Contract.Assert(false); // unexpected declaration
return null; // to please compiler
}
} else {
Contract.Assert(false); // unexpected declaration
return null; // to please compiler
}
}
public void AddTopLevelDecl(TopLevelDecl d, string auxName = null)
{
LookupFile(auxName).AddTopLevelDecl(d);
}
public void AddTopLevelDecl(TopLevelDecl d)
{
newTopLevelDecls.Add(d);
}
void NewtypeDecl(DeclModifierData dmod, ModuleDefinition module, out TopLevelDecl td)
{
IToken id, bvId;
Attributes attrs = null;
td = null;
Type baseType = null;
Expression wh;
CheckDeclModifiers(dmod, "Newtypes", AllowedDeclModifiers.None);
Expect(84);
while (la.kind == 50) {
Attribute(ref attrs);
}
NoUSIdent(out id);
Expect(74);
if (IsIdentColonOrBar()) {
NoUSIdent(out bvId);
if (la.kind == 22) {
Get();
Type(out baseType);
}
if (baseType == null) { baseType = new InferredTypeProxy(); }
Expect(24);
Expression(out wh, false, true);
td = new NewtypeDecl(theVerifyThisFile ? id : new IncludeToken(id), id.val, module, new BoundVar(bvId, bvId.val, baseType), wh, attrs);
} else if (StartOf(6)) {
Type(out baseType);
td = new NewtypeDecl(theVerifyThisFile ? id : new IncludeToken(id), id.val, module, baseType, attrs);
} else SynErr(159);
}