Expression *semanticTraits(TraitsExp *e, Scope *sc)
{
#if LOGSEMANTIC
printf("TraitsExp::semantic() %s\n", e->toChars());
#endif
if (e->ident != Id::compiles && e->ident != Id::isSame &&
e->ident != Id::identifier && e->ident != Id::getProtection)
{
if (!TemplateInstance::semanticTiargs(e->loc, sc, e->args, 1))
return new ErrorExp();
}
size_t dim = e->args ? e->args->dim : 0;
if (e->ident == Id::isArithmetic)
{
return isTypeX(e, &isTypeArithmetic);
}
else if (e->ident == Id::isFloating)
{
return isTypeX(e, &isTypeFloating);
}
else if (e->ident == Id::isIntegral)
{
return isTypeX(e, &isTypeIntegral);
}
else if (e->ident == Id::isScalar)
{
return isTypeX(e, &isTypeScalar);
}
else if (e->ident == Id::isUnsigned)
{
return isTypeX(e, &isTypeUnsigned);
}
else if (e->ident == Id::isAssociativeArray)
{
return isTypeX(e, &isTypeAssociativeArray);
}
else if (e->ident == Id::isStaticArray)
{
return isTypeX(e, &isTypeStaticArray);
}
else if (e->ident == Id::isAbstractClass)
{
return isTypeX(e, &isTypeAbstractClass);
}
else if (e->ident == Id::isFinalClass)
{
return isTypeX(e, &isTypeFinalClass);
}
else if (e->ident == Id::isPOD)
{
if (dim != 1)
goto Ldimerror;
RootObject *o = (*e->args)[0];
Type *t = isType(o);
StructDeclaration *sd;
if (!t)
{
e->error("type expected as second argument of __traits %s instead of %s", e->ident->toChars(), o->toChars());
goto Lfalse;
}
Type *tb = t->baseElemOf();
if (tb->ty == Tstruct
&& ((sd = (StructDeclaration *)(((TypeStruct *)tb)->sym)) != NULL))
{
if (sd->isPOD())
goto Ltrue;
else
goto Lfalse;
}
goto Ltrue;
}
else if (e->ident == Id::isNested)
{
if (dim != 1)
goto Ldimerror;
RootObject *o = (*e->args)[0];
Dsymbol *s = getDsymbol(o);
AggregateDeclaration *a;
FuncDeclaration *f;
if (!s) { }
else if ((a = s->isAggregateDeclaration()) != NULL)
{
if (a->isNested())
goto Ltrue;
else
goto Lfalse;
}
else if ((f = s->isFuncDeclaration()) != NULL)
{
if (f->isNested())
goto Ltrue;
else
goto Lfalse;
}
e->error("aggregate or function expected instead of '%s'", o->toChars());
goto Lfalse;
}
else if (e->ident == Id::isAbstractFunction)
{
return isFuncX(e, &isFuncAbstractFunction);
}
else if (e->ident == Id::isVirtualFunction)
{
return isFuncX(e, &isFuncVirtualFunction);
}
else if (e->ident == Id::isVirtualMethod)
{
return isFuncX(e, &isFuncVirtualMethod);
}
else if (e->ident == Id::isFinalFunction)
{
return isFuncX(e, &isFuncFinalFunction);
}
else if (e->ident == Id::isOverrideFunction)
{
return isFuncX(e, &isFuncOverrideFunction);
}
else if (e->ident == Id::isStaticFunction)
{
return isFuncX(e, &isFuncStaticFunction);
}
else if (e->ident == Id::isRef)
{
return isDeclX(e, &isDeclRef);
}
else if (e->ident == Id::isOut)
{
return isDeclX(e, &isDeclOut);
}
else if (e->ident == Id::isLazy)
{
return isDeclX(e, &isDeclLazy);
}
else if (e->ident == Id::identifier)
{
// Get identifier for symbol as a string literal
/* Specify 0 for bit 0 of the flags argument to semanticTiargs() so that
* a symbol should not be folded to a constant.
* Bit 1 means don't convert Parameter to Type if Parameter has an identifier
*/
if (!TemplateInstance::semanticTiargs(e->loc, sc, e->args, 2))
return new ErrorExp();
if (dim != 1)
goto Ldimerror;
RootObject *o = (*e->args)[0];
Parameter *po = isParameter(o);
Identifier *id;
if (po)
{
id = po->ident;
assert(id);
}
else
{
Dsymbol *s = getDsymbol(o);
if (!s || !s->ident)
{
e->error("argument %s has no identifier", o->toChars());
goto Lfalse;
}
id = s->ident;
}
StringExp *se = new StringExp(e->loc, id->toChars());
return se->semantic(sc);
}
else if (e->ident == Id::getProtection)
{
if (dim != 1)
goto Ldimerror;
Scope *sc2 = sc->push();
sc2->flags = sc->flags | SCOPEnoaccesscheck;
bool ok = TemplateInstance::semanticTiargs(e->loc, sc2, e->args, 1);
sc2->pop();
if (!ok)
return new ErrorExp();
RootObject *o = (*e->args)[0];
Dsymbol *s = getDsymbol(o);
if (!s)
{
if (!isError(o))
e->error("argument %s has no protection", o->toChars());
goto Lfalse;
}
if (s->scope)
s->semantic(s->scope);
PROT protection = s->prot();
const char *protName = Pprotectionnames[protection];
assert(protName);
StringExp *se = new StringExp(e->loc, (char *) protName);
return se->semantic(sc);
}
else if (e->ident == Id::parent)
{
if (dim != 1)
goto Ldimerror;
RootObject *o = (*e->args)[0];
Dsymbol *s = getDsymbol(o);
if (s)
{
if (FuncDeclaration *fd = s->isFuncDeclaration()) // Bugzilla 8943
s = fd->toAliasFunc();
if (!s->isImport()) // Bugzilla 8922
s = s->toParent();
}
if (!s || s->isImport())
{
e->error("argument %s has no parent", o->toChars());
goto Lfalse;
}
if (FuncDeclaration *f = s->isFuncDeclaration())
{
if (TemplateDeclaration *td = getFuncTemplateDecl(f))
{
if (td->overroot) // if not start of overloaded list of TemplateDeclaration's
td = td->overroot; // then get the start
Expression *ex = new TemplateExp(e->loc, td, f);
ex = ex->semantic(sc);
return ex;
}
if (FuncLiteralDeclaration *fld = f->isFuncLiteralDeclaration())
{
// Directly translate to VarExp instead of FuncExp
Expression *ex = new VarExp(e->loc, fld, 1);
return ex->semantic(sc);
}
}
return (new DsymbolExp(e->loc, s))->semantic(sc);
}
else if (e->ident == Id::hasMember ||
e->ident == Id::getMember ||
e->ident == Id::getOverloads ||
e->ident == Id::getVirtualMethods ||
e->ident == Id::getVirtualFunctions)
{
if (dim != 2)
goto Ldimerror;
RootObject *o = (*e->args)[0];
Expression *ex = isExpression((*e->args)[1]);
if (!ex)
{
e->error("expression expected as second argument of __traits %s", e->ident->toChars());
goto Lfalse;
}
ex = ex->ctfeInterpret();
StringExp *se = ex->toStringExp();
if (!se || se->length() == 0)
{
e->error("string expected as second argument of __traits %s instead of %s", e->ident->toChars(), ex->toChars());
goto Lfalse;
}
se = se->toUTF8(sc);
if (se->sz != 1)
{
e->error("string must be chars");
goto Lfalse;
}
Identifier *id = Lexer::idPool((char *)se->string);
/* Prefer dsymbol, because it might need some runtime contexts.
*/
Dsymbol *sym = getDsymbol(o);
if (sym)
{
ex = new DsymbolExp(e->loc, sym);
ex = new DotIdExp(e->loc, ex, id);
}
else if (Type *t = isType(o))
ex = typeDotIdExp(e->loc, t, id);
else if (Expression *ex2 = isExpression(o))
ex = new DotIdExp(e->loc, ex2, id);
else
{
e->error("invalid first argument");
goto Lfalse;
}
if (e->ident == Id::hasMember)
{
if (sym)
{
Dsymbol *sm = sym->search(e->loc, id);
if (sm)
goto Ltrue;
}
/* Take any errors as meaning it wasn't found
*/
Scope *sc2 = sc->push();
ex = ex->trySemantic(sc2);
sc2->pop();
if (!ex)
goto Lfalse;
else
goto Ltrue;
}
else if (e->ident == Id::getMember)
{
ex = ex->semantic(sc);
return ex;
}
else if (e->ident == Id::getVirtualFunctions ||
e->ident == Id::getVirtualMethods ||
e->ident == Id::getOverloads)
{
unsigned errors = global.errors;
Expression *eorig = ex;
ex = ex->semantic(sc);
if (errors < global.errors)
e->error("%s cannot be resolved", eorig->toChars());
/* Create tuple of functions of ex
*/
//ex->print();
Expressions *exps = new Expressions();
FuncDeclaration *f;
if (ex->op == TOKvar)
{
VarExp *ve = (VarExp *)ex;
f = ve->var->isFuncDeclaration();
ex = NULL;
}
else if (ex->op == TOKdotvar)
{
DotVarExp *dve = (DotVarExp *)ex;
f = dve->var->isFuncDeclaration();
if (dve->e1->op == TOKdottype || dve->e1->op == TOKthis)
ex = NULL;
else
ex = dve->e1;
}
else
f = NULL;
Ptrait p;
p.exps = exps;
p.e1 = ex;
p.ident = e->ident;
overloadApply(f, &p, &fptraits);
TupleExp *tup = new TupleExp(e->loc, exps);
return tup->semantic(sc);
}
else
assert(0);
}
else if (e->ident == Id::classInstanceSize)
{
if (dim != 1)
goto Ldimerror;
RootObject *o = (*e->args)[0];
Dsymbol *s = getDsymbol(o);
ClassDeclaration *cd;
if (!s || (cd = s->isClassDeclaration()) == NULL)
{
e->error("first argument is not a class");
goto Lfalse;
}
if (cd->sizeok == SIZEOKnone)
{
if (cd->scope)
cd->semantic(cd->scope);
}
if (cd->sizeok != SIZEOKdone)
{
e->error("%s %s is forward referenced", cd->kind(), cd->toChars());
goto Lfalse;
}
return new IntegerExp(e->loc, cd->structsize, Type::tsize_t);
}
else if (e->ident == Id::getAliasThis)
{
if (dim != 1)
goto Ldimerror;
RootObject *o = (*e->args)[0];
Dsymbol *s = getDsymbol(o);
AggregateDeclaration *ad;
if (!s || (ad = s->isAggregateDeclaration()) == NULL)
{
e->error("argument is not an aggregate type");
goto Lfalse;
}
Expressions *exps = new Expressions();
if (ad->aliasthis)
exps->push(new StringExp(e->loc, ad->aliasthis->ident->toChars()));
Expression *ex = new TupleExp(e->loc, exps);
ex = ex->semantic(sc);
return ex;
}
else if (e->ident == Id::getAttributes)
{
if (dim != 1)
goto Ldimerror;
RootObject *o = (*e->args)[0];
Dsymbol *s = getDsymbol(o);
if (!s)
{
#if 0
Expression *x = isExpression(o);
Type *t = isType(o);
if (x) printf("e = %s %s\n", Token::toChars(x->op), x->toChars());
if (t) printf("t = %d %s\n", t->ty, t->toChars());
#endif
e->error("first argument is not a symbol");
goto Lfalse;
}
//printf("getAttributes %s, attrs = %p, scope = %p\n", s->toChars(), s->userAttributes, s->userAttributesScope);
UserAttributeDeclaration *udad = s->userAttribDecl;
TupleExp *tup = new TupleExp(e->loc, udad ? udad->getAttributes() : new Expressions());
return tup->semantic(sc);
}
else if (e->ident == Id::getFunctionAttributes)
{
/// extract all function attributes as a tuple (const/shared/inout/pure/nothrow/etc) except UDAs.
if (dim != 1)
goto Ldimerror;
RootObject *o = (*e->args)[0];
Dsymbol *s = getDsymbol(o);
Type *t = isType(o);
TypeFunction *tf = NULL;
if (s)
{
if (FuncDeclaration *f = s->isFuncDeclaration())
t = f->type;
else if (VarDeclaration *v = s->isVarDeclaration())
t = v->type;
}
if (t)
{
if (t->ty == Tfunction)
tf = (TypeFunction *)t;
else if (t->ty == Tdelegate)
tf = (TypeFunction *)t->nextOf();
else if (t->ty == Tpointer && t->nextOf()->ty == Tfunction)
tf = (TypeFunction *)t->nextOf();
}
if (!tf)
{
e->error("first argument is not a function");
goto Lfalse;
}
Expressions *mods = new Expressions();
PushAttributes pa;
pa.mods = mods;
tf->modifiersApply(&pa, &PushAttributes::fp);
tf->attributesApply(&pa, &PushAttributes::fp, TRUSTformatSystem);
TupleExp *tup = new TupleExp(e->loc, mods);
return tup->semantic(sc);
}
else if (e->ident == Id::allMembers || e->ident == Id::derivedMembers)
{
if (dim != 1)
goto Ldimerror;
RootObject *o = (*e->args)[0];
Dsymbol *s = getDsymbol(o);
ScopeDsymbol *sds;
if (!s)
{
e->error("argument has no members");
goto Lfalse;
}
Import *import;
if ((import = s->isImport()) != NULL)
{
// Bugzilla 9692
sds = import->mod;
}
else if ((sds = s->isScopeDsymbol()) == NULL)
{
e->error("%s %s has no members", s->kind(), s->toChars());
goto Lfalse;
}
// use a struct as local function
struct PushIdentsDg
{
static int dg(void *ctx, size_t n, Dsymbol *sm)
{
if (!sm)
return 1;
//printf("\t[%i] %s %s\n", i, sm->kind(), sm->toChars());
if (sm->ident)
{
if (sm->ident != Id::ctor &&
sm->ident != Id::dtor &&
sm->ident != Id::_postblit &&
memcmp(sm->ident->string, "__", 2) == 0)
{
return 0;
}
//printf("\t%s\n", sm->ident->toChars());
Identifiers *idents = (Identifiers *)ctx;
/* Skip if already present in idents[]
*/
for (size_t j = 0; j < idents->dim; j++)
{ Identifier *id = (*idents)[j];
if (id == sm->ident)
return 0;
#ifdef DEBUG
// Avoid using strcmp in the first place due to the performance impact in an O(N^2) loop.
assert(strcmp(id->toChars(), sm->ident->toChars()) != 0);
#endif
}
idents->push(sm->ident);
}
else
{
EnumDeclaration *ed = sm->isEnumDeclaration();
if (ed)
{
ScopeDsymbol::foreach(NULL, ed->members, &PushIdentsDg::dg, (Identifiers *)ctx);
}
}
return 0;
}
};
Identifiers *idents = new Identifiers;
ScopeDsymbol::foreach(sc, sds->members, &PushIdentsDg::dg, idents);
ClassDeclaration *cd = sds->isClassDeclaration();
if (cd && e->ident == Id::allMembers)
{
struct PushBaseMembers
{
static void dg(ClassDeclaration *cd, Identifiers *idents)
{
for (size_t i = 0; i < cd->baseclasses->dim; i++)
{
ClassDeclaration *cb = (*cd->baseclasses)[i]->base;
ScopeDsymbol::foreach(NULL, cb->members, &PushIdentsDg::dg, idents);
if (cb->baseclasses->dim)
dg(cb, idents);
}
}
};
PushBaseMembers::dg(cd, idents);
}
// Turn Identifiers into StringExps reusing the allocated array
assert(sizeof(Expressions) == sizeof(Identifiers));
Expressions *exps = (Expressions *)idents;
for (size_t i = 0; i < idents->dim; i++)
{
Identifier *id = (*idents)[i];
StringExp *se = new StringExp(e->loc, id->toChars());
(*exps)[i] = se;
}
/* Making this a tuple is more flexible, as it can be statically unrolled.
* To make an array literal, enclose __traits in [ ]:
* [ __traits(allMembers, ...) ]
*/
Expression *ex = new TupleExp(e->loc, exps);
ex = ex->semantic(sc);
return ex;
}
else if (e->ident == Id::compiles)
{
/* Determine if all the objects - types, expressions, or symbols -
* compile without error
*/
if (!dim)
goto Lfalse;
for (size_t i = 0; i < dim; i++)
{
unsigned errors = global.startGagging();
unsigned oldspec = global.speculativeGag;
global.speculativeGag = global.gag;
Scope *sc2 = sc->push();
sc2->speculative = true;
sc2->flags = sc->flags & ~SCOPEctfe | SCOPEcompile;
bool err = false;
RootObject *o = (*e->args)[i];
Type *t = isType(o);
Expression *ex = t ? t->toExpression() : isExpression(o);
if (!ex && t)
{
Dsymbol *s;
t->resolve(e->loc, sc2, &ex, &t, &s);
if (t)
{
t->semantic(e->loc, sc2);
if (t->ty == Terror)
err = true;
}
else if (s && s->errors)
err = true;
}
if (ex)
{
ex = ex->semantic(sc2);
ex = resolvePropertiesOnly(sc2, ex);
ex = ex->optimize(WANTvalue);
ex = checkGC(sc2, ex);
if (ex->op == TOKerror)
err = true;
}
sc2->pop();
global.speculativeGag = oldspec;
if (global.endGagging(errors) || err)
{
goto Lfalse;
}
}
goto Ltrue;
}
else if (e->ident == Id::isSame)
{
/* Determine if two symbols are the same
*/
if (dim != 2)
goto Ldimerror;
if (!TemplateInstance::semanticTiargs(e->loc, sc, e->args, 0))
return new ErrorExp();
RootObject *o1 = (*e->args)[0];
RootObject *o2 = (*e->args)[1];
Dsymbol *s1 = getDsymbol(o1);
Dsymbol *s2 = getDsymbol(o2);
//printf("isSame: %s, %s\n", o1->toChars(), o2->toChars());
#if 0
printf("o1: %p\n", o1);
printf("o2: %p\n", o2);
if (!s1)
{
Expression *ea = isExpression(o1);
if (ea)
printf("%s\n", ea->toChars());
Type *ta = isType(o1);
if (ta)
printf("%s\n", ta->toChars());
goto Lfalse;
}
else
printf("%s %s\n", s1->kind(), s1->toChars());
#endif
if (!s1 && !s2)
{
Expression *ea1 = isExpression(o1);
Expression *ea2 = isExpression(o2);
if (ea1 && ea2)
{
if (ea1->equals(ea2))
goto Ltrue;
}
}
if (!s1 || !s2)
goto Lfalse;
s1 = s1->toAlias();
s2 = s2->toAlias();
if (s1->isFuncAliasDeclaration())
s1 = ((FuncAliasDeclaration *)s1)->toAliasFunc();
if (s2->isFuncAliasDeclaration())
s2 = ((FuncAliasDeclaration *)s2)->toAliasFunc();
if (s1 == s2)
goto Ltrue;
else
goto Lfalse;
}
else if (e->ident == Id::getUnitTests)
{
if (dim != 1)
goto Ldimerror;
RootObject *o = (*e->args)[0];
Dsymbol *s = getDsymbol(o);
if (!s)
{
e->error("argument %s to __traits(getUnitTests) must be a module or aggregate", o->toChars());
goto Lfalse;
}
Import *imp = s->isImport();
if (imp) // Bugzilla 10990
s = imp->mod;
ScopeDsymbol* scope = s->isScopeDsymbol();
if (!scope)
{
e->error("argument %s to __traits(getUnitTests) must be a module or aggregate, not a %s", s->toChars(), s->kind());
goto Lfalse;
}
Expressions* unitTests = new Expressions();
Dsymbols* symbols = scope->members;
if (global.params.useUnitTests && symbols)
{
// Should actually be a set
AA* uniqueUnitTests = NULL;
collectUnitTests(symbols, uniqueUnitTests, unitTests);
}
TupleExp *tup = new TupleExp(e->loc, unitTests);
return tup->semantic(sc);
}
else if(e->ident == Id::getVirtualIndex)
{
if (dim != 1)
goto Ldimerror;
RootObject *o = (*e->args)[0];
Dsymbol *s = getDsymbol(o);
FuncDeclaration *fd;
if (!s || (fd = s->isFuncDeclaration()) == NULL)
{
e->error("first argument to __traits(getVirtualIndex) must be a function");
goto Lfalse;
}
fd = fd->toAliasFunc(); // Neccessary to support multiple overloads.
return new IntegerExp(e->loc, fd->vtblIndex, Type::tptrdiff_t);
}
else
{
if (const char *sub = (const char *)speller(e->ident->toChars(), &trait_search_fp, NULL, idchars))
e->error("unrecognized trait '%s', did you mean '%s'?", e->ident->toChars(), sub);
else
e->error("unrecognized trait '%s'", e->ident->toChars());
goto Lfalse;
}
return NULL;
Ldimerror:
e->error("wrong number of arguments %d", (int)dim);
goto Lfalse;
Lfalse:
return new IntegerExp(e->loc, 0, Type::tbool);
Ltrue:
return new IntegerExp(e->loc, 1, Type::tbool);
}
Expression *TraitsExp::semantic(Scope *sc)
{
#if LOGSEMANTIC
printf("TraitsExp::semantic() %s\n", toChars());
#endif
if (ident != Id::compiles && ident != Id::isSame)
TemplateInstance::semanticTiargs(loc, sc, args, 1);
size_t dim = args ? args->dim : 0;
Object *o;
FuncDeclaration *f;
#define ISTYPE(cond) \
for (size_t i = 0; i < dim; i++) \
{ Type *t = getType((Object *)args->data[i]); \
if (!t) \
goto Lfalse; \
if (!(cond)) \
goto Lfalse; \
} \
if (!dim) \
goto Lfalse; \
goto Ltrue;
#define ISDSYMBOL(cond) \
for (size_t i = 0; i < dim; i++) \
{ Dsymbol *s = getDsymbol((Object *)args->data[i]); \
if (!s) \
goto Lfalse; \
if (!(cond)) \
goto Lfalse; \
} \
if (!dim) \
goto Lfalse; \
goto Ltrue;
if (ident == Id::isArithmetic)
{
ISTYPE(t->isintegral() || t->isfloating())
}
else if (ident == Id::isFloating)
{
ISTYPE(t->isfloating())
}
else if (ident == Id::isIntegral)
{
ISTYPE(t->isintegral())
}
else if (ident == Id::isScalar)
{
ISTYPE(t->isscalar())
}
else if (ident == Id::isUnsigned)
{
ISTYPE(t->isunsigned())
}
else if (ident == Id::isAssociativeArray)
{
ISTYPE(t->toBasetype()->ty == Taarray)
}
else if (ident == Id::isStaticArray)
{
ISTYPE(t->toBasetype()->ty == Tsarray)
}
else if (ident == Id::isAbstractClass)
{
ISTYPE(t->toBasetype()->ty == Tclass && ((TypeClass *)t->toBasetype())->sym->isAbstract())
}
else if (ident == Id::isFinalClass)
{
ISTYPE(t->toBasetype()->ty == Tclass && ((TypeClass *)t->toBasetype())->sym->storage_class & STCfinal)
}
else if (ident == Id::isAbstractFunction)
{
ISDSYMBOL((f = s->isFuncDeclaration()) != NULL && f->isAbstract())
}
else if (ident == Id::isVirtualFunction)
{
ISDSYMBOL((f = s->isFuncDeclaration()) != NULL && f->isVirtual())
}
else if (ident == Id::isFinalFunction)
{
ISDSYMBOL((f = s->isFuncDeclaration()) != NULL && f->isFinal())
}
else if (ident == Id::hasMember ||
ident == Id::getMember ||
ident == Id::getVirtualFunctions)
{
if (dim != 2)
goto Ldimerror;
Object *o = (Object *)args->data[0];
Expression *e = isExpression((Object *)args->data[1]);
if (!e)
{ // error("expression expected as second argument of __traits %s", ident->toChars());
goto Lfalse;
}
e = e->optimize(WANTvalue | WANTinterpret);
if (e->op != TOKstring)
{ // error("string expected as second argument of __traits %s instead of %s", ident->toChars(), e->toChars());
goto Lfalse;
}
StringExp *se = (StringExp *)e;
se = se->toUTF8(sc);
if (se->sz != 1)
{ // error("string must be chars");
goto Lfalse;
}
Identifier *id = Lexer::idPool((char *)se->string);
Type *t = isType(o);
e = isExpression(o);
Dsymbol *s = isDsymbol(o);
if (t)
e = new TypeDotIdExp(loc, t, id);
else if (e)
e = new DotIdExp(loc, e, id);
else if (s)
{ e = new DsymbolExp(loc, s);
e = new DotIdExp(loc, e, id);
}
else
{ // error("invalid first argument");
goto Lfalse;
}
if (ident == Id::hasMember)
{ /* Take any errors as meaning it wasn't found
*/
unsigned errors = global.errors;
global.gag++;
e = e->semantic(sc);
global.gag--;
if (errors != global.errors)
{ if (global.gag == 0)
global.errors = errors;
goto Lfalse;
}
else
goto Ltrue;
}
else if (ident == Id::getMember)
{
e = e->semantic(sc);
return e;
}
else if (ident == Id::getVirtualFunctions)
{
unsigned errors = global.errors;
Expression *ex = e;
e = e->semantic(sc);
/* if (errors < global.errors)
error("%s cannot be resolved", ex->toChars()); */
/* Create tuple of virtual function overloads of e
*/
//e->dump(0);
Expressions *exps = new Expressions();
FuncDeclaration *f;
if (e->op == TOKvar)
{ VarExp *ve = (VarExp *)e;
f = ve->var->isFuncDeclaration();
}
else if (e->op == TOKdotvar)
{ DotVarExp *dve = (DotVarExp *)e;
f = dve->var->isFuncDeclaration();
}
else
f = NULL;
Pvirtuals p;
p.exps = exps;
p.e1 = e;
overloadApply(f, fpvirtuals, &p);
TupleExp *tup = new TupleExp(loc, exps);
return tup->semantic(sc);
}
else
assert(0);
}
else if (ident == Id::classInstanceSize)
{
if (dim != 1)
goto Ldimerror;
Object *o = (Object *)args->data[0];
Dsymbol *s = getDsymbol(o);
ClassDeclaration *cd;
if (!s || (cd = s->isClassDeclaration()) == NULL)
{
// error("first argument is not a class");
goto Lfalse;
}
return new IntegerExp(loc, cd->structsize, Type::tsize_t);
}
else if (ident == Id::allMembers || ident == Id::derivedMembers)
{
if (dim != 1)
goto Ldimerror;
Object *o = (Object *)args->data[0];
Dsymbol *s = getDsymbol(o);
ScopeDsymbol *sd;
if (!s)
{
// error("argument has no members");
goto Lfalse;
}
if ((sd = s->isScopeDsymbol()) == NULL)
{
// error("%s %s has no members", s->kind(), s->toChars());
goto Lfalse;
}
Expressions *exps = new Expressions;
while (1)
{ size_t dim = ScopeDsymbol::dim(sd->members);
for (size_t i = 0; i < dim; i++)
{
Dsymbol *sm = ScopeDsymbol::getNth(sd->members, i);
//printf("\t[%i] %s %s\n", i, sm->kind(), sm->toChars());
if (sm->ident)
{
//printf("\t%s\n", sm->ident->toChars());
char *str = sm->ident->toChars();
/* Skip if already present in exps[]
*/
for (size_t j = 0; j < exps->dim; j++)
{ StringExp *se2 = (StringExp *)exps->data[j];
if (strcmp(str, (char *)se2->string) == 0)
goto Lnext;
}
StringExp *se = new StringExp(loc, str);
exps->push(se);
}
Lnext:
;
}
ClassDeclaration *cd = sd->isClassDeclaration();
if (cd && cd->baseClass && ident == Id::allMembers)
sd = cd->baseClass; // do again with base class
else
break;
}
Expression *e = new ArrayLiteralExp(loc, exps);
e = e->semantic(sc);
return e;
}
else if (ident == Id::compiles)
{
/* Determine if all the objects - types, expressions, or symbols -
* compile without error
*/
if (!dim)
goto Lfalse;
for (size_t i = 0; i < dim; i++)
{ Object *o = (Object *)args->data[i];
Type *t;
Expression *e;
Dsymbol *s;
unsigned errors = global.errors;
global.gag++;
t = isType(o);
if (t)
{ t->resolve(loc, sc, &e, &t, &s);
if (t)
t->semantic(loc, sc);
else if (e)
e->semantic(sc);
}
else
{ e = isExpression(o);
if (e)
e->semantic(sc);
}
global.gag--;
if (errors != global.errors)
{ if (global.gag == 0)
global.errors = errors;
goto Lfalse;
}
}
goto Ltrue;
}
else if (ident == Id::isSame)
{ /* Determine if two symbols are the same
*/
if (dim != 2)
goto Ldimerror;
TemplateInstance::semanticTiargs(loc, sc, args, 0);
Object *o1 = (Object *)args->data[0];
Object *o2 = (Object *)args->data[1];
Dsymbol *s1 = getDsymbol(o1);
Dsymbol *s2 = getDsymbol(o2);
#if 0
printf("o1: %p\n", o1);
printf("o2: %p\n", o2);
if (!s1)
{ Expression *ea = isExpression(o1);
if (ea)
printf("%s\n", ea->toChars());
Type *ta = isType(o1);
if (ta)
printf("%s\n", ta->toChars());
goto Lfalse;
}
else
printf("%s %s\n", s1->kind(), s1->toChars());
#endif
if (!s1 && !s2)
{ Expression *ea1 = isExpression(o1);
Expression *ea2 = isExpression(o2);
if (ea1 && ea2 && ea1->equals(ea2))
goto Ltrue;
}
if (!s1 || !s2)
goto Lfalse;
s1 = s1->toAlias();
s2 = s2->toAlias();
if (s1 == s2)
goto Ltrue;
else
goto Lfalse;
}
else
{ // error("unrecognized trait %s", ident->toChars());
goto Lfalse;
}
return NULL;
Lnottype:
// error("%s is not a type", o->toChars());
goto Lfalse;
Ldimerror:
// error("wrong number of arguments %d", dim);
goto Lfalse;
Lfalse:
return new IntegerExp(loc, 0, Type::tbool);
Ltrue:
return new IntegerExp(loc, 1, Type::tbool);
}