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Refactor this a bit to move ParsingTemplateArgs to only apply to classes, 

not defs.

Implement support for forward definitions of classes.  This implements
TableGen/ForwardRef.td.

llvm-svn: 23548
This commit is contained in:
Chris Lattner 2005-09-30 04:53:04 +00:00
parent 41815f2aa2
commit b509577605
1 changed files with 25 additions and 11 deletions
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36
llvm/utils/TableGen/FileParser.y
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@ -214,7 +214,7 @@ using namespace llvm;
%type <DagValueList> DagArgList DagArgListNE
%type <FieldList> ValueList ValueListNE
%type <BitList> BitList OptBitList RBitList
%type <StrVal> Declaration OptID OptVarName
%type <StrVal> Declaration OptID OptVarName ObjectName
%start File
@ -537,20 +537,31 @@ ObjectName : OptID {
static unsigned AnonCounter = 0;
if ($1->empty())
*$1 = "anonymous."+utostr(AnonCounter++);
CurRec = new Record(*$1);
delete $1;
ParsingTemplateArgs = true;
$$ = $1;
};
ClassName : ObjectName {
if (Records.getClass(CurRec->getName())) {
err() << "Class '" << CurRec->getName() << "' already defined!\n";
exit(1);
// If a class of this name already exists, it must be a forward ref.
if ((CurRec = Records.getClass(*$1))) {
// If the body was previously defined, this is an error.
if (!CurRec->getValues().empty() ||
!CurRec->getSuperClasses().empty() ||
!CurRec->getTemplateArgs().empty()) {
err() << "Class '" << CurRec->getName() << "' already defined!\n";
exit(1);
}
} else {
// If this is the first reference to this class, create and add it.
CurRec = new Record(*$1);
Records.addClass(CurRec);
}
Records.addClass(CurRec);
delete $1;
};
DefName : ObjectName {
CurRec = new Record(*$1);
delete $1;
// Ensure redefinition doesn't happen.
if (Records.getDef(CurRec->getName())) {
err() << "Def '" << CurRec->getName() << "' already defined!\n";
@ -560,7 +571,6 @@ DefName : ObjectName {
};
ObjectBody : ClassList {
ParsingTemplateArgs = false;
for (unsigned i = 0, e = $1->size(); i != e; ++i) {
addSubClass((*$1)[i].first, *(*$1)[i].second);
// Delete the template arg values for the class
@ -579,8 +589,12 @@ ObjectBody : ClassList {
CurRec = 0;
};
ClassInst : CLASS ClassName OptTemplateArgList ObjectBody {
$$ = $4;
ClassInst : CLASS ClassName {
ParsingTemplateArgs = true;
} OptTemplateArgList {
ParsingTemplateArgs = false;
} ObjectBody {
$$ = $6;
};
DefInst : DEF DefName ObjectBody {