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todt.d
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todt.d
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/**
* Compiler implementation of the
* $(LINK2 http://www.dlang.org, D programming language).
*
* Copyright: Copyright (C) 1999-2018 by The D Language Foundation, All Rights Reserved
* Authors: $(LINK2 http://www.digitalmars.com, Walter Bright)
* License: $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
* Source: $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/todt.d, _todt.d)
* Documentation: https://dlang.org/phobos/dmd_todt.html
* Coverage: https://codecov.io/gh/dlang/dmd/src/master/src/dmd/todt.d
*/
module dmd.todt;
import core.stdc.stdio;
import core.stdc.string;
import dmd.root.array;
import dmd.root.rmem;
import dmd.aggregate;
import dmd.arraytypes;
import dmd.backend.type;
import dmd.complex;
import dmd.ctfeexpr;
import dmd.declaration;
import dmd.dclass;
import dmd.denum;
import dmd.dstruct;
import dmd.dsymbol;
import dmd.dtemplate;
import dmd.errors;
import dmd.expression;
import dmd.func;
import dmd.globals;
import dmd.init;
import dmd.mtype;
import dmd.target;
import dmd.tokens;
import dmd.tocsym;
import dmd.toobj;
import dmd.typesem;
import dmd.typinf;
import dmd.visitor;
import dmd.backend.cc;
import dmd.backend.dt;
alias toSymbol = dmd.tocsym.toSymbol;
alias toSymbol = dmd.glue.toSymbol;
/* A dt_t is a simple structure representing data to be added
* to the data segment of the output object file. As such,
* it is a list of initialized bytes, 0 data, and offsets from
* other symbols.
* Each D symbol and type can be converted into a dt_t so it can
* be written to the data segment.
*/
alias Dts = Array!(dt_t*);
/* ================================================================ */
extern (C++) void Initializer_toDt(Initializer init, DtBuilder dtb)
{
extern (C++) class InitToDt : Visitor
{
DtBuilder dtb;
this(DtBuilder dtb)
{
this.dtb = dtb;
}
alias visit = Visitor.visit;
override void visit(Initializer)
{
assert(0);
}
override void visit(VoidInitializer vi)
{
/* Void initializers are set to 0, just because we need something
* to set them to in the static data segment.
*/
dtb.nzeros(cast(uint)vi.type.size());
}
override void visit(StructInitializer si)
{
//printf("StructInitializer.toDt('%s')\n", si.toChars());
assert(0);
}
override void visit(ArrayInitializer ai)
{
//printf("ArrayInitializer.toDt('%s')\n", ai.toChars());
Type tb = ai.type.toBasetype();
if (tb.ty == Tvector)
tb = (cast(TypeVector)tb).basetype;
Type tn = tb.nextOf().toBasetype();
//printf("\tdim = %d\n", ai.dim);
Dts dts;
dts.setDim(ai.dim);
dts.zero();
uint size = cast(uint)tn.size();
uint length = 0;
for (size_t i = 0; i < ai.index.dim; i++)
{
Expression idx = ai.index[i];
if (idx)
length = cast(uint)idx.toInteger();
//printf("\tindex[%d] = %p, length = %u, dim = %u\n", i, idx, length, ai.dim);
assert(length < ai.dim);
scope dtb = new DtBuilder();
Initializer_toDt(ai.value[i], dtb);
if (dts[length])
error(ai.loc, "duplicate initializations for index `%d`", length);
dts[length] = dtb.finish();
length++;
}
Expression edefault = tb.nextOf().defaultInit(Loc.initial);
const n = tn.numberOfElems(ai.loc);
dt_t* dtdefault = null;
scope dtbarray = new DtBuilder();
for (size_t i = 0; i < ai.dim; i++)
{
if (dts[i])
dtbarray.cat(dts[i]);
else
{
if (!dtdefault)
{
scope dtb = new DtBuilder();
Expression_toDt(edefault, dtb);
dtdefault = dtb.finish();
}
dtbarray.repeat(dtdefault, n);
}
}
switch (tb.ty)
{
case Tsarray:
{
TypeSArray ta = cast(TypeSArray)tb;
size_t tadim = cast(size_t)ta.dim.toInteger();
if (ai.dim < tadim)
{
if (edefault.isBool(false))
{
// pad out end of array
dtbarray.nzeros(cast(uint)(size * (tadim - ai.dim)));
}
else
{
if (!dtdefault)
{
scope dtb = new DtBuilder();
Expression_toDt(edefault, dtb);
dtdefault = dtb.finish();
}
const m = n * (tadim - ai.dim);
assert(m <= uint.max);
dtbarray.repeat(dtdefault, cast(uint)m);
}
}
else if (ai.dim > tadim)
{
error(ai.loc, "too many initializers, %d, for array[%d]", ai.dim, tadim);
}
dtb.cat(dtbarray);
break;
}
case Tpointer:
case Tarray:
{
if (tb.ty == Tarray)
dtb.size(ai.dim);
Symbol* s = dtb.dtoff(dtbarray.finish(), 0);
if (tn.isMutable())
for (int i = 0; i < ai.dim; i++)
write_pointers(tn, s, size * i);
break;
}
default:
assert(0);
}
dt_free(dtdefault);
}
override void visit(ExpInitializer ei)
{
//printf("ExpInitializer.toDt() %s\n", ei.exp.toChars());
ei.exp = ei.exp.optimize(WANTvalue);
Expression_toDt(ei.exp, dtb);
}
}
scope v = new InitToDt(dtb);
init.accept(v);
}
/* ================================================================ */
extern (C++) void Expression_toDt(Expression e, DtBuilder dtb)
{
extern (C++) class ExpToDt : Visitor
{
DtBuilder dtb;
this(DtBuilder dtb)
{
this.dtb = dtb;
}
alias visit = Visitor.visit;
override void visit(Expression e)
{
version (none)
{
printf("Expression.toDt() %d\n", e.op);
}
e.error("non-constant expression `%s`", e.toChars());
dtb.nzeros(1);
}
override void visit(CastExp e)
{
version (none)
{
printf("CastExp.toDt() %d from %s to %s\n", e.op, e.e1.type.toChars(), e.type.toChars());
}
if (e.e1.type.ty == Tclass && e.type.ty == Tclass)
{
if ((cast(TypeClass)e.type).sym.isInterfaceDeclaration()) // casting from class to interface
{
assert(e.e1.op == TOK.classReference);
ClassDeclaration from = (cast(ClassReferenceExp)e.e1).originalClass();
InterfaceDeclaration to = (cast(TypeClass)e.type).sym.isInterfaceDeclaration();
int off = 0;
int isbase = to.isBaseOf(from, &off);
assert(isbase);
ClassReferenceExp_toDt(cast(ClassReferenceExp)e.e1, dtb, off);
}
else //casting from class to class
{
Expression_toDt(e.e1, dtb);
}
return;
}
visit(cast(UnaExp)e);
}
override void visit(AddrExp e)
{
version (none)
{
printf("AddrExp.toDt() %d\n", e.op);
}
if (e.e1.op == TOK.structLiteral)
{
StructLiteralExp sl = cast(StructLiteralExp)e.e1;
Symbol* s = toSymbol(sl);
dtb.xoff(s, 0);
if (sl.type.isMutable())
write_pointers(sl.type, s, 0);
return;
}
visit(cast(UnaExp)e);
}
override void visit(IntegerExp e)
{
//printf("IntegerExp.toDt() %d\n", e.op);
uint sz = cast(uint)e.type.size();
dinteger_t value = e.getInteger();
if (value == 0)
dtb.nzeros(sz);
else
dtb.nbytes(sz, cast(char*)&value);
}
override void visit(RealExp e)
{
//printf("RealExp.toDt(%Lg)\n", e.value);
switch (e.type.toBasetype().ty)
{
case Tfloat32:
case Timaginary32:
{
auto fvalue = cast(float)e.value;
dtb.nbytes(4, cast(char*)&fvalue);
break;
}
case Tfloat64:
case Timaginary64:
{
auto dvalue = cast(double)e.value;
dtb.nbytes(8, cast(char*)&dvalue);
break;
}
case Tfloat80:
case Timaginary80:
{
auto evalue = e.value;
dtb.nbytes(Target.realsize - Target.realpad, cast(char*)&evalue);
dtb.nzeros(Target.realpad);
break;
}
default:
printf("%s, e.type=%s\n", e.toChars(), e.type.toChars());
assert(0);
}
}
override void visit(ComplexExp e)
{
//printf("ComplexExp.toDt() '%s'\n", e.toChars());
switch (e.type.toBasetype().ty)
{
case Tcomplex32:
{
auto fvalue = cast(float)creall(e.value);
dtb.nbytes(4, cast(char*)&fvalue);
fvalue = cast(float)cimagl(e.value);
dtb.nbytes(4, cast(char*)&fvalue);
break;
}
case Tcomplex64:
{
auto dvalue = cast(double)creall(e.value);
dtb.nbytes(8, cast(char*)&dvalue);
dvalue = cast(double)cimagl(e.value);
dtb.nbytes(8, cast(char*)&dvalue);
break;
}
case Tcomplex80:
{
auto evalue = creall(e.value);
dtb.nbytes(Target.realsize - Target.realpad, cast(char*)&evalue);
dtb.nzeros(Target.realpad);
evalue = cimagl(e.value);
dtb.nbytes(Target.realsize - Target.realpad, cast(char*)&evalue);
dtb.nzeros(Target.realpad);
break;
}
default:
assert(0);
}
}
override void visit(NullExp e)
{
assert(e.type);
dtb.nzeros(cast(uint)e.type.size());
}
override void visit(StringExp e)
{
//printf("StringExp.toDt() '%s', type = %s\n", e.toChars(), e.type.toChars());
Type t = e.type.toBasetype();
// BUG: should implement some form of static string pooling
int n = cast(int)e.numberOfCodeUnits();
char* p = e.toPtr();
if (!p)
{
p = cast(char*)mem.xmalloc(n * e.sz);
e.writeTo(p, false);
}
switch (t.ty)
{
case Tarray:
dtb.size(n);
goto case Tpointer;
case Tpointer:
if (e.sz == 1)
{
import dmd.e2ir : toStringSymbol;
import dmd.glue : totym;
Symbol* s = toStringSymbol(p, n, e.sz);
dtb.xoff(s, 0);
}
else
dtb.abytes(0, n * e.sz, p, cast(uint)e.sz);
break;
case Tsarray:
{
TypeSArray tsa = cast(TypeSArray)t;
dtb.nbytes(n * e.sz, p);
if (tsa.dim)
{
dinteger_t dim = tsa.dim.toInteger();
if (n < dim)
{
// Pad remainder with 0
dtb.nzeros(cast(uint)((dim - n) * tsa.next.size()));
}
}
break;
}
default:
printf("StringExp.toDt(type = %s)\n", e.type.toChars());
assert(0);
}
if (p != e.toPtr())
mem.xfree(p);
}
override void visit(ArrayLiteralExp e)
{
//printf("ArrayLiteralExp.toDt() '%s', type = %s\n", e.toChars(), e.type.toChars());
scope dtbarray = new DtBuilder();
for (size_t i = 0; i < e.elements.dim; i++)
{
Expression_toDt(e.getElement(i), dtbarray);
}
Type t = e.type.toBasetype();
switch (t.ty)
{
case Tsarray:
dtb.cat(dtbarray);
break;
case Tpointer:
case Tarray:
{
if (t.ty == Tarray)
dtb.size(e.elements.dim);
dt_t* d = dtbarray.finish();
if (d)
dtb.dtoff(d, 0);
else
dtb.size(0);
break;
}
default:
assert(0);
}
}
override void visit(StructLiteralExp sle)
{
//printf("StructLiteralExp.toDt() %s, ctfe = %d\n", sle.toChars(), sle.ownedByCtfe);
assert(sle.sd.fields.dim - sle.sd.isNested() <= sle.elements.dim);
membersToDt(sle.sd, dtb, sle.elements, 0, null);
}
override void visit(SymOffExp e)
{
//printf("SymOffExp.toDt('%s')\n", e.var.toChars());
assert(e.var);
if (!(e.var.isDataseg() || e.var.isCodeseg()) ||
e.var.needThis() ||
e.var.isThreadlocal())
{
version (none)
{
printf("SymOffExp.toDt()\n");
}
e.error("non-constant expression `%s`", e.toChars());
return;
}
dtb.xoff(toSymbol(e.var), cast(uint)e.offset);
}
override void visit(VarExp e)
{
//printf("VarExp.toDt() %d\n", e.op);
VarDeclaration v = e.var.isVarDeclaration();
if (v && (v.isConst() || v.isImmutable()) &&
e.type.toBasetype().ty != Tsarray && v._init)
{
if (v.inuse)
{
e.error("recursive reference `%s`", e.toChars());
return;
}
v.inuse++;
Initializer_toDt(v._init, dtb);
v.inuse--;
return;
}
SymbolDeclaration sd = e.var.isSymbolDeclaration();
if (sd && sd.dsym)
{
StructDeclaration_toDt(sd.dsym, dtb);
return;
}
version (none)
{
printf("VarExp.toDt(), kind = %s\n", e.var.kind());
}
e.error("non-constant expression `%s`", e.toChars());
dtb.nzeros(1);
}
override void visit(FuncExp e)
{
//printf("FuncExp.toDt() %d\n", e.op);
if (e.fd.tok == TOK.reserved && e.type.ty == Tpointer)
{
// change to non-nested
e.fd.tok = TOK.function_;
e.fd.vthis = null;
}
Symbol *s = toSymbol(e.fd);
toObjFile(e.fd, false);
if (e.fd.tok == TOK.delegate_)
dtb.size(0);
dtb.xoff(s, 0);
}
override void visit(VectorExp e)
{
//printf("VectorExp.toDt() %s\n", e.toChars());
for (size_t i = 0; i < e.dim; i++)
{
Expression elem;
if (e.e1.op == TOK.arrayLiteral)
{
ArrayLiteralExp ale = cast(ArrayLiteralExp)e.e1;
elem = ale.getElement(i);
}
else
elem = e.e1;
Expression_toDt(elem, dtb);
}
}
override void visit(ClassReferenceExp e)
{
InterfaceDeclaration to = (cast(TypeClass)e.type).sym.isInterfaceDeclaration();
if (to) //Static typeof this literal is an interface. We must add offset to symbol
{
ClassDeclaration from = e.originalClass();
int off = 0;
int isbase = to.isBaseOf(from, &off);
assert(isbase);
ClassReferenceExp_toDt(e, dtb, off);
}
else
ClassReferenceExp_toDt(e, dtb, 0);
}
override void visit(TypeidExp e)
{
if (Type t = isType(e.obj))
{
genTypeInfo(e.loc, t, null);
Symbol *s = toSymbol(t.vtinfo);
dtb.xoff(s, 0);
return;
}
assert(0);
}
}
scope v = new ExpToDt(dtb);
e.accept(v);
}
/* ================================================================= */
// Generate the data for the static initializer.
extern (C++) void ClassDeclaration_toDt(ClassDeclaration cd, DtBuilder dtb)
{
//printf("ClassDeclaration.toDt(this = '%s')\n", cd.toChars());
membersToDt(cd, dtb, null, 0, cd);
//printf("-ClassDeclaration.toDt(this = '%s')\n", cd.toChars());
}
extern (C++) void StructDeclaration_toDt(StructDeclaration sd, DtBuilder dtb)
{
//printf("+StructDeclaration.toDt(), this='%s'\n", sd.toChars());
membersToDt(sd, dtb, null, 0, null);
//printf("-StructDeclaration.toDt(), this='%s'\n", sd.toChars());
}
/******************************
* Generate data for instance of __cpp_type_info_ptr that refers
* to the C++ RTTI symbol for cd.
* Params:
* cd = C++ class
* dtb = data table builder
*/
extern (C++) void cpp_type_info_ptr_toDt(ClassDeclaration cd, DtBuilder dtb)
{
//printf("cpp_type_info_ptr_toDt(this = '%s')\n", cd.toChars());
assert(cd.isCPPclass());
// Put in first two members, the vtbl[] and the monitor
dtb.xoff(toVtblSymbol(ClassDeclaration.cpp_type_info_ptr), 0);
dtb.size(0); // monitor
// Create symbol for C++ type info
Symbol *s = toSymbolCppTypeInfo(cd);
// Put in address of cd's C++ type info
dtb.xoff(s, 0);
//printf("-cpp_type_info_ptr_toDt(this = '%s')\n", cd.toChars());
}
/****************************************************
* Put out initializers of ad.fields[].
* Although this is consistent with the elements[] version, we
* have to use this optimized version to reduce memory footprint.
* Params:
* ad = aggregate with members
* pdt = tail of initializer list to start appending initialized data to
* elements = values to use as initializers, null means use default initializers
* firstFieldIndex = starting place is elements[firstFieldIndex]
* concreteType = structs: null, classes: most derived class
* ppb = pointer that moves through BaseClass[] from most derived class
* Returns:
* updated tail of dt_t list
*/
private void membersToDt(AggregateDeclaration ad, DtBuilder dtb,
Expressions* elements, size_t firstFieldIndex,
ClassDeclaration concreteType,
BaseClass*** ppb = null)
{
//printf("membersToDt(ad = '%s', concrete = '%s', ppb = %p)\n", ad.toChars(), concreteType ? concreteType.toChars() : "null", ppb);
ClassDeclaration cd = ad.isClassDeclaration();
version (none)
{
printf(" interfaces.length = %d\n", cast(int)cd.interfaces.length);
for (size_t i = 0; i < cd.vtblInterfaces.dim; i++)
{
BaseClass* b = (*cd.vtblInterfaces)[i];
printf(" vbtblInterfaces[%d] b = %p, b.sym = %s\n", cast(int)i, b, b.sym.toChars());
}
}
/* Order:
* { base class } or { __vptr, __monitor }
* interfaces
* fields
*/
uint offset;
if (cd)
{
if (ClassDeclaration cdb = cd.baseClass)
{
size_t index = 0;
for (ClassDeclaration c = cdb.baseClass; c; c = c.baseClass)
index += c.fields.dim;
membersToDt(cdb, dtb, elements, index, concreteType);
offset = cdb.structsize;
}
else if (InterfaceDeclaration id = cd.isInterfaceDeclaration())
{
offset = (**ppb).offset;
if (id.vtblInterfaces.dim == 0)
{
BaseClass* b = **ppb;
//printf(" Interface %s, b = %p\n", id.toChars(), b);
++(*ppb);
for (ClassDeclaration cd2 = concreteType; 1; cd2 = cd2.baseClass)
{
assert(cd2);
uint csymoffset = baseVtblOffset(cd2, b);
//printf(" cd2 %s csymoffset = x%x\n", cd2 ? cd2.toChars() : "null", csymoffset);
if (csymoffset != ~0)
{
dtb.xoff(toSymbol(cd2), csymoffset);
offset += Target.ptrsize;
break;
}
}
}
}
else
{
dtb.xoff(toVtblSymbol(concreteType), 0); // __vptr
offset = Target.ptrsize;
if (cd.classKind != ClassKind.cpp)
{
dtb.size(0); // __monitor
offset += Target.ptrsize;
}
}
// Interface vptr initializations
toSymbol(cd); // define csym
BaseClass** pb;
if (!ppb)
{
pb = cd.vtblInterfaces.data;
ppb = &pb;
}
for (size_t i = 0; i < cd.interfaces.length; ++i)
{
BaseClass* b = **ppb;
if (offset < b.offset)
dtb.nzeros(b.offset - offset);
membersToDt(cd.interfaces.ptr[i].sym, dtb, elements, firstFieldIndex, concreteType, ppb);
//printf("b.offset = %d, b.sym.structsize = %d\n", (int)b.offset, (int)b.sym.structsize);
offset = b.offset + b.sym.structsize;
}
}
else
offset = 0;
assert(!elements ||
firstFieldIndex <= elements.dim &&
firstFieldIndex + ad.fields.dim <= elements.dim);
for (size_t i = 0; i < ad.fields.dim; i++)
{
if (elements && !(*elements)[firstFieldIndex + i])
continue;
if (!elements || !(*elements)[firstFieldIndex + i])
{
if (ad.fields[i]._init && ad.fields[i]._init.isVoidInitializer())
continue;
}
VarDeclaration vd;
size_t k;
for (size_t j = i; j < ad.fields.dim; j++)
{
VarDeclaration v2 = ad.fields[j];
if (v2.offset < offset)
continue;
if (elements && !(*elements)[firstFieldIndex + j])
continue;
if (!elements || !(*elements)[firstFieldIndex + j])
{
if (v2._init && v2._init.isVoidInitializer())
continue;
}
// find the nearest field
if (!vd || v2.offset < vd.offset)
{
vd = v2;
k = j;
assert(vd == v2 || !vd.isOverlappedWith(v2));
}
}
if (!vd)
continue;
assert(offset <= vd.offset);
if (offset < vd.offset)
dtb.nzeros(vd.offset - offset);
scope dtbx = new DtBuilder();
if (elements)
{
Expression e = (*elements)[firstFieldIndex + k];
Type tb = vd.type.toBasetype();
if (tb.ty == Tsarray)
toDtElem((cast(TypeSArray)tb), dtbx, e);
else
Expression_toDt(e, dtbx); // convert e to an initializer dt
}
else
{
if (Initializer init = vd._init)
{
//printf("\t\t%s has initializer %s\n", vd.toChars(), init.toChars());
if (init.isVoidInitializer())
continue;
assert(vd.semanticRun >= PASS.semantic2done);
ExpInitializer ei = init.isExpInitializer();
Type tb = vd.type.toBasetype();
if (ei && tb.ty == Tsarray)
toDtElem((cast(TypeSArray)tb), dtbx, ei.exp);
else
Initializer_toDt(init, dtbx);
}
else if (offset <= vd.offset)
{
//printf("\t\tdefault initializer\n");
Type_toDt(vd.type, dtbx);
}
if (dtbx.isZeroLength())
continue;
}
dtb.cat(dtbx);
offset = cast(uint)(vd.offset + vd.type.size());
}
if (offset < ad.structsize)
dtb.nzeros(ad.structsize - offset);
}
/* ================================================================= */
extern (C++) void Type_toDt(Type t, DtBuilder dtb)
{
extern (C++) class TypeToDt : Visitor
{
public:
DtBuilder dtb;
this(DtBuilder dtb)
{
this.dtb = dtb;
}
alias visit = Visitor.visit;
override void visit(Type t)
{
//printf("Type.toDt()\n");
Expression e = t.defaultInit(Loc.initial);
Expression_toDt(e, dtb);
}
override void visit(TypeVector t)
{
assert(t.basetype.ty == Tsarray);
toDtElem(cast(TypeSArray)t.basetype, dtb, null);
}
override void visit(TypeSArray t)
{
toDtElem(t, dtb, null);
}
override void visit(TypeStruct t)
{
StructDeclaration_toDt(t.sym, dtb);
}
}
scope v = new TypeToDt(dtb);
t.accept(v);
}
private void toDtElem(TypeSArray tsa, DtBuilder dtb, Expression e)
{
//printf("TypeSArray.toDtElem() tsa = %s\n", tsa.toChars());
if (tsa.size(Loc.initial) == 0)
{
dtb.nzeros(0);
}
else
{
size_t len = cast(size_t)tsa.dim.toInteger();
assert(len);
Type tnext = tsa.next;
Type tbn = tnext.toBasetype();
while (tbn.ty == Tsarray && (!e || !tbn.equivalent(e.type.nextOf())))
{
len *= (cast(TypeSArray)tbn).dim.toInteger();
tnext = tbn.nextOf();
tbn = tnext.toBasetype();
}
if (!e) // if not already supplied
e = tsa.defaultInit(Loc.initial); // use default initializer
if (!e.type.implicitConvTo(tnext)) // https://issues.dlang.org/show_bug.cgi?id=14996
{
// https://issues.dlang.org/show_bug.cgi?id=1914
// https://issues.dlang.org/show_bug.cgi?id=3198
if (e.op == TOK.string_)
len /= (cast(StringExp)e).numberOfCodeUnits();
else if (e.op == TOK.arrayLiteral)
len /= (cast(ArrayLiteralExp)e).elements.dim;
}
scope dtb2 = new DtBuilder();
Expression_toDt(e, dtb2);
dt_t* dt2 = dtb2.finish();
assert(len <= uint.max);
dtb.repeat(dt2, cast(uint)len);
}
}
/*****************************************************/
/* CTFE stuff */
/*****************************************************/
private void ClassReferenceExp_toDt(ClassReferenceExp e, DtBuilder dtb, int off)
{
//printf("ClassReferenceExp.toDt() %d\n", e.op);
Symbol* s = toSymbol(e);
dtb.xoff(s, off);
if (e.type.isMutable())
write_instance_pointers(e.type, s, 0);
}
extern (C++) void ClassReferenceExp_toInstanceDt(ClassReferenceExp ce, DtBuilder dtb)
{
//printf("ClassReferenceExp.toInstanceDt() %d\n", ce.op);
ClassDeclaration cd = ce.originalClass();
// Put in the rest
size_t firstFieldIndex = 0;
for (ClassDeclaration c = cd.baseClass; c; c = c.baseClass)
firstFieldIndex += c.fields.dim;
membersToDt(cd, dtb, ce.value.elements, firstFieldIndex, cd);
}
/****************************************************
*/
private extern (C++) class TypeInfoDtVisitor : Visitor
{
DtBuilder dtb;
/*
* Used in TypeInfo*.toDt to verify the runtime TypeInfo sizes
*/
static void verifyStructSize(ClassDeclaration typeclass, size_t expected)
{
if (typeclass.structsize != expected)
{
debug
{
printf("expected = x%x, %s.structsize = x%x\n", cast(uint)expected,
typeclass.toChars(), cast(uint)typeclass.structsize);
}
error(typeclass.loc, "`%s`: mismatch between compiler (%d bytes) and object.d or object.di (%d bytes) found. Check installation and import paths with -v compiler switch.",
typeclass.toChars(), cast(uint)expected, cast(uint)typeclass.structsize);
fatal();
}
}
this(DtBuilder dtb)
{
this.dtb = dtb;
}
alias visit = Visitor.visit;
override void visit(TypeInfoDeclaration d)
{
//printf("TypeInfoDeclaration.toDt() %s\n", toChars());
verifyStructSize(Type.dtypeinfo, 2 * Target.ptrsize);
dtb.xoff(toVtblSymbol(Type.dtypeinfo), 0); // vtbl for TypeInfo
dtb.size(0); // monitor
}
override void visit(TypeInfoConstDeclaration d)
{
//printf("TypeInfoConstDeclaration.toDt() %s\n", toChars());
verifyStructSize(Type.typeinfoconst, 3 * Target.ptrsize);
dtb.xoff(toVtblSymbol(Type.typeinfoconst), 0); // vtbl for TypeInfo_Const
dtb.size(0); // monitor
Type tm = d.tinfo.mutableOf();
tm = tm.merge();
genTypeInfo(d.loc, tm, null);
dtb.xoff(toSymbol(tm.vtinfo), 0);
}
override void visit(TypeInfoInvariantDeclaration d)
{