void ParseEnumDeclaration(TABLE *table)
{
SYM *sp;
TYP *tp;
if( lastst == id) {
if((sp = search(lastid,&tagtable)) == NULL) {
sp = allocSYM();
sp->tp = allocTYP();
sp->tp->type = bt_enum;
sp->tp->size = 2;
sp->tp->lst.head = 0;
sp->tp->btp = 0;
sp->storage_class = sc_type;
sp->name = litlate(lastid);
sp->tp->sname = sp->name;
NextToken();
if( lastst != begin)
error(ERR_INCOMPLETE);
else {
insert(sp,&tagtable);
NextToken();
ParseEnumerationList(table);
}
}
else
NextToken();
head = sp->tp;
}
else {
tp = allocTYP(); // fix here
tp->type = bt_enum;
tp->size = 2;
if( lastst != begin)
error(ERR_INCOMPLETE);
else {
NextToken();
ParseEnumerationList(table);
}
head = tp;
}
}
TYP *maketype(int bt, int siz)
{
TYP *tp;
tp = allocTYP();
tp->val_flag = 0;
tp->size = siz;
tp->type = bt;
tp->typeno = bt;
tp->sname = 0;
tp->lst.head = 0;
return tp;
}
TYP *maketype(int bt, int siz)
{
TYP *tp;
tp = allocTYP();
tp->val_flag = 0;
tp->size = siz;
tp->type = bt;
tp->typeno = bt;
tp->sname = 0;
tp->lst.head = 0;
tp->isUnsigned = FALSE;
tp->isVolatile = FALSE;
tp->isConst = FALSE;
return tp;
}
SYM *makeint(char *name)
{ SYM *sp;
TYP *tp;
sp = allocSYM();
tp = allocTYP();
tp->type = bt_long;
tp->size = 8;
tp->btp = 0;
tp->lst.head = 0;
tp->sname = 0;
sp->name = name;
sp->storage_class = sc_auto;
sp->tp = tp;
sp->IsPrototype = FALSE;
insert(sp,&lsyms);
return sp;
}
void ParseEnumDeclaration(TABLE *table)
{
SYM *sp;
TYP *tp;
if( lastst == id) {
if((sp = search(lastid,&tagtable)) == NULL) {
sp = allocSYM();
sp->tp = TYP::Make(bt_enum,1);
sp->storage_class = sc_type;
sp->SetName(*(new std::string(lastid)));
sp->tp->sname = new std::string(*sp->name);
NextToken();
if( lastst != begin)
error(ERR_INCOMPLETE);
else {
tagtable.insert(sp);
NextToken();
ParseEnumerationList(table);
}
}
else
NextToken();
head = sp->tp;
}
else {
tp = allocTYP(); // fix here
tp->type = bt_enum;
tp->size = 1;
if( lastst != begin)
error(ERR_INCOMPLETE);
else {
NextToken();
ParseEnumerationList(table);
}
head = tp;
}
}
int ParseStructDeclaration(int ztype)
{
SYM *sp;
TYP *tp;
int gblflag;
int ret;
int psd;
ENODE nd;
ENODE *pnd = &nd;
psd = isStructDecl;
isStructDecl = TRUE;
ret = 0;
bit_offset = 0;
bit_next = 0;
bit_width = -1;
if(lastst == id) {
if((sp = search(lastid,&tagtable)) == NULL) {
// If we encounted an unknown struct in a parameter list, we want
// it to go into the global memory pool, not a local one.
if (parsingParameterList) {
gblflag = global_flag;
global_flag++;
sp = allocSYM();
sp->name = litlate(lastid);
global_flag = gblflag;
}
else {
sp = allocSYM();
sp->name = litlate(lastid);
}
sp->tp = allocTYP();
sp->tp->type = ztype;
sp->tp->typeno = typeno++;
sp->tp->lst.head = 0;
sp->storage_class = sc_type;
sp->tp->sname = sp->name;
sp->tp->alignment = 0;
NextToken();
if (lastst == kw_align) {
NextToken();
sp->tp->alignment = GetIntegerExpression(&pnd);
}
// Could be a forward structure declaration like:
// struct buf;
if (lastst==semicolon) {
ret = 1;
insert(sp,&tagtable);
NextToken();
}
// Defining a pointer to an unknown struct ?
else if (lastst == star) {
insert(sp,&tagtable);
}
else if(lastst != begin)
error(ERR_INCOMPLETE);
else {
insert(sp,&tagtable);
NextToken();
ParseStructMembers(sp->tp,ztype);
}
}
else {
NextToken();
if (lastst==kw_align) {
NextToken();
sp->tp->alignment = GetIntegerExpression(&pnd);
}
if (lastst==begin) {
NextToken();
ParseStructMembers(sp->tp,ztype);
}
}
head = sp->tp;
}
else {
tp = allocTYP();
tp->type = ztype;
tp->sname = 0;
tp->lst.head = 0;
if (lastst==kw_align) {
NextToken();
tp->alignment = GetIntegerExpression(&pnd);
}
if( lastst != begin)
error(ERR_INCOMPLETE);
else {
NextToken();
ParseStructMembers(tp,ztype);
}
head = tp;
}
isStructDecl = psd;
return ret;
}
/*
* process ParseSpecifierarations of the form:
*
* <type> <ParseSpecifier>, <ParseSpecifier>...;
*
* leaves the ParseSpecifierarations in the symbol table pointed to by
* table and returns the number of bytes declared. al is the
* allocation type to assign, ilc is the initial location
* counter. if al is sc_member then no initialization will
* be processed. ztype should be bt_struct for normal and in
* structure ParseSpecifierarations and sc_union for in union ParseSpecifierarations.
*/
int declare(TABLE *table,int al,int ilc,int ztype)
{
SYM *sp, *sp1, *sp2;
TYP *dhead;
char stnm[200];
static long old_nbytes;
int nbytes;
nbytes = 0;
ParseSpecifier(table);
dhead = head;
for(;;) {
declid = 0;
bit_width = -1;
ParseDeclarationPrefix(ztype==bt_union);
if( declid != 0) { /* otherwise just struct tag... */
sp = allocSYM();
sp->name = declid;
sp->storage_class = al;
if (bit_width > 0 && bit_offset > 0) {
// share the storage word with the previously defined field
nbytes = old_nbytes - ilc;
}
old_nbytes = ilc + nbytes;
if (al != sc_member) {
// sp->isTypedef = isTypedef;
if (isTypedef)
sp->storage_class = sc_typedef;
isTypedef = FALSE;
}
while( (ilc + nbytes) % alignment(head)) {
if( al != sc_member && al != sc_external && al != sc_auto) {
dseg();
GenerateByte(0);
}
++nbytes;
}
if( al == sc_static) {
sp->value.i = nextlabel++;
}
else if( ztype == bt_union)
sp->value.i = ilc;
else if( al != sc_auto )
sp->value.i = ilc + nbytes;
else
sp->value.i = -(ilc + nbytes + head->size);
if (bit_width == -1)
sp->tp = head;
else {
sp->tp = allocTYP();
*(sp->tp) = *head;
sp->tp->type = bt_bitfield;
sp->tp->size = head->size;//tp_int.size;
sp->tp->bit_width = bit_width;
sp->tp->bit_offset = bit_offset;
}
if(
(sp->tp->type == bt_func) &&
sp->storage_class == sc_global )
sp->storage_class = sc_external;
if(ztype == bt_union)
nbytes = imax(nbytes,sp->tp->size);
else if(al != sc_external)
nbytes += sp->tp->size;
if( sp->tp->type == bt_ifunc && (sp1 = search(sp->name,table)) != 0 &&
sp1->tp->type == bt_func )
{
sp1->tp = sp->tp;
sp1->storage_class = sp->storage_class;
// sp1->value.i = sp->value.i;
sp1->IsPrototype = sp->IsPrototype;
sp = sp1;
}
else {
sp2 = search(sp->name,table);
if (sp2 == NULL)
insert(sp,table);
else {
if (funcdecl==2)
sp2->tp = sp->tp;
//else if (!sp2->IsPrototype)
// insert(sp,table);
}
}
if( sp->tp->type == bt_ifunc) { /* function body follows */
ParseFunction(sp);
return nbytes;
}
if( (al == sc_global || al == sc_static) &&
sp->tp->type != bt_func && sp->storage_class!=sc_typedef)
doinit(sp);
}
if (funcdecl==TRUE) {
if (lastst==comma || lastst==semicolon)
break;
if (lastst==closepa)
goto xit1;
}
else if (catchdecl==TRUE) {
if (lastst==closepa)
goto xit1;
}
else if (lastst == semicolon)
break;
needpunc(comma);
if(declbegin(lastst) == 0)
break;
head = dhead;
}
NextToken();
xit1:
return nbytes;
}
void Compiler::AddStandardTypes()
{
TYP *p, *pchar, *pint;
p = TYP::Make(bt_long,8);
stdint = *p;
pint = p;
p = TYP::Make(bt_long,8);
p->isUnsigned = true;
stduint = *p;
p = TYP::Make(bt_long,8);
stdlong = *p;
p = TYP::Make(bt_long,8);
p->isUnsigned = true;
stdulong = *p;
p = TYP::Make(bt_short,4);
stdshort = *p;
p = TYP::Make(bt_short,4);
p->isUnsigned = true;
stdushort = *p;
p = TYP::Make(bt_char,2);
stdchar = *p;
pchar = p;
p = TYP::Make(bt_char,2);
p->isUnsigned = true;
stduchar = *p;
p = allocTYP();
p->type = bt_byte;
p->typeno = bt_byte;
p->size = 1;
p->size2 = 1;
p->bit_width = -1;
stdbyte = *p;
p = allocTYP();
p->type = bt_byte;
p->typeno = bt_byte;
p->size = 1;
p->size2 = 1;
p->isUnsigned = true;
p->bit_width = -1;
stdubyte = *p;
p = allocTYP();
p->type = bt_pointer;
p->typeno = bt_pointer;
p->val_flag = 1;
p->size = 1;
p->size2 = 1;
p->btp = pchar->GetIndex();
p->bit_width = -1;
stdstring = *p;
p = allocTYP();
p->type = bt_double;
p->typeno = bt_double;
p->size = 8;
p->size2 = 8;
p->bit_width = -1;
stddbl = *p;
stddouble = *p;
p = allocTYP();
p->type = bt_float;
p->typeno = bt_float;
p->size = 4;
p->size2 = 4;
p->bit_width = -1;
stdflt = *p;
p = TYP::Make(bt_func,0);
p->btp = pint->GetIndex();
stdfunc = *p;
p = allocTYP();
p->type = bt_exception;
p->typeno = bt_exception;
p->size = 8;
p->size2 = 8;
p->isUnsigned = true;
p->bit_width = -1;
stdexception = *p;
p = allocTYP();
p->type = bt_long;
p->typeno = bt_long;
p->val_flag = 1;
p->size = 8;
p->size2 = 8;
p->bit_width = -1;
stdconst = *p;
}
/*
* process declarations of the form:
*
* <type> <specifier>, <specifier>...;
*
* leaves the declarations in the symbol table pointed to by
* table and returns the number of bytes declared. al is the
* allocation type to assign, ilc is the initial location
* counter. if al is sc_member then no initialization will
* be processed. ztype should be bt_struct for normal and in
* structure ParseSpecifierarations and sc_union for in union ParseSpecifierarations.
*/
int declare(TABLE *table,int al,int ilc,int ztype)
{
SYM *sp, *sp1, *sp2;
TYP *dhead, *tp1, *tp2;
ENODE *ep1, *ep2;
char stnm[200];
int op;
int fd;
int fn_doneinit = 0;
int bcnt;
static long old_nbytes;
int nbytes;
nbytes = 0;
if (ParseSpecifier(table))
return nbytes;
dhead = head;
for(;;) {
declid = (char *)NULL;
bit_width = -1;
ParseDeclarationPrefix(ztype==bt_union);
// If a function declaration is taking place and just the type is
// specified without a parameter name, assign an internal compiler
// generated name.
if (funcdecl>0 && funcdecl != 10 && declid==(char *)NULL) {
sprintf(lastid, "_p%d", nparms);
declid = litlate(lastid);
names[nparms++] = declid;
missingArgumentName = TRUE;
}
if( declid != NULL) { /* otherwise just struct tag... */
sp = allocSYM();
sp->name = declid;
sp->storage_class = al;
sp->isConst = isConst;
if (bit_width > 0 && bit_offset > 0) {
// share the storage word with the previously defined field
nbytes = old_nbytes - ilc;
}
old_nbytes = ilc + nbytes;
if (al != sc_member) {
// sp->isTypedef = isTypedef;
if (isTypedef)
sp->storage_class = sc_typedef;
isTypedef = FALSE;
}
if ((ilc + nbytes) % roundAlignment(head)) {
if (al==sc_thread)
tseg();
else
dseg();
}
bcnt = 0;
while( (ilc + nbytes) % roundAlignment(head)) {
++nbytes;
bcnt++;
}
if( al != sc_member && al != sc_external && al != sc_auto) {
if (bcnt > 0)
genstorage(bcnt);
}
// Set the struct member storage offset.
if( al == sc_static || al==sc_thread) {
sp->value.i = nextlabel++;
}
else if( ztype == bt_union)
sp->value.i = ilc;
else if( al != sc_auto )
sp->value.i = ilc + nbytes;
// Auto variables are referenced negative to the base pointer
// Structs need to be aligned on the boundary of the largest
// struct element. If a struct is all chars this will be 2.
// If a struct contains a pointer this will be 8. It has to
// be the worst case alignment.
else {
sp->value.i = -(ilc + nbytes + roundSize(head));
}
if (bit_width == -1)
sp->tp = head;
else {
sp->tp = allocTYP();
*(sp->tp) = *head;
sp->tp->type = bt_bitfield;
sp->tp->size = head->size;//tp_int.size;
sp->tp->bit_width = bit_width;
sp->tp->bit_offset = bit_offset;
}
if (isConst)
sp->tp->isConst = TRUE;
if((sp->tp->type == bt_func) && sp->storage_class == sc_global )
sp->storage_class = sc_external;
// Increase the storage allocation by the type size.
if(ztype == bt_union)
nbytes = imax(nbytes,roundSize(sp->tp));
else if(al != sc_external) {
// If a pointer to a function is defined in a struct.
if (isStructDecl && (sp->tp->type==bt_func || sp->tp->type==bt_ifunc))
nbytes += 8;
else
nbytes += roundSize(sp->tp);
}
if (sp->tp->type == bt_ifunc && (sp1 = search(sp->name,table)) != 0 && sp1->tp->type == bt_func )
{
sp1->tp = sp->tp;
sp1->storage_class = sp->storage_class;
sp1->value.i = sp->value.i;
sp1->IsPrototype = sp->IsPrototype;
sp = sp1;
}
else {
sp2 = search(sp->name,table);
if (sp2 == NULL)
insert(sp,table);
else {
if (funcdecl==2)
sp2->tp = sp->tp;
//else if (!sp2->IsPrototype)
// insert(sp,table);
}
}
if (needParseFunction) {
needParseFunction = FALSE;
fn_doneinit = ParseFunction(sp);
if (sp->tp->type != bt_pointer)
return nbytes;
}
// if(sp->tp->type == bt_ifunc) { /* function body follows */
// ParseFunction(sp);
// return nbytes;
// }
if( (al == sc_global || al == sc_static || al==sc_thread) && !fn_doneinit &&
sp->tp->type != bt_func && sp->tp->type != bt_ifunc && sp->storage_class!=sc_typedef)
doinit(sp);
}
if (funcdecl>0) {
if (lastst==comma || lastst==semicolon)
break;
if (lastst==closepa)
goto xit1;
}
else if (catchdecl==TRUE) {
if (lastst==closepa)
goto xit1;
}
else if (lastst == semicolon)
break;
else if (lastst == assign) {
tp1 = nameref(&ep1);
op = en_assign;
// NextToken();
tp2 = asnop(&ep2);
if( tp2 == 0 || !IsLValue(ep1) )
error(ERR_LVALUE);
else {
tp1 = forcefit(&ep1,tp1,&ep2,tp2);
ep1 = makenode(op,ep1,ep2);
}
sp->initexp = ep1;
if (lastst==semicolon)
break;
}
needpunc(comma);
if(declbegin(lastst) == 0)
break;
head = dhead;
}
NextToken();
xit1:
return nbytes;
}
int StructDeclaration::Parse(int ztype)
{
SYM *sp;
TYP *tp;
int ret;
int psd;
ENODE nd;
ENODE *pnd = &nd;
sp = nullptr;
psd = isStructDecl;
isStructDecl++;
ret = 0;
bit_offset = 0;
bit_next = 0;
bit_width = -1;
if(lastst == id) {
if((sp = tagtable.Find(lastid,false)) == NULL) {
sp = allocSYM();
sp->SetName(*(new std::string(lastid)));
sp->tp = allocTYP();
sp->tp->type = (e_bt)ztype;
sp->tp->typeno = typeno++;
sp->tp->lst.Clear();
sp->storage_class = sc_type;
sp->tp->sname = new std::string(*sp->name);
sp->tp->alignment = 0;
NextToken();
if (lastst == kw_align) {
NextToken();
sp->tp->alignment = GetIntegerExpression(&pnd);
}
// Could be a forward structure declaration like:
// struct buf;
if (lastst==semicolon) {
ret = 1;
tagtable.insert(sp);
NextToken();
}
// Defining a pointer to an unknown struct ?
else if (lastst == star) {
tagtable.insert(sp);
}
else if(lastst != begin)
error(ERR_INCOMPLETE);
else {
tagtable.insert(sp);
NextToken();
ParseMembers(sp, sp->tp,ztype);
}
}
// Else it is a known structure
else {
NextToken();
if (lastst==kw_align) {
NextToken();
sp->tp->alignment = GetIntegerExpression(&pnd);
}
if (lastst==begin) {
NextToken();
ParseMembers(sp,sp->tp,ztype);
}
}
head = sp->tp;
}
// Else there was no tag identifier
else {
tp = allocTYP();
tp->type = (e_bt)ztype;
tp->typeno = typeno++;
tp->sname = new std::string("");
if (lastst==kw_align) {
NextToken();
tp->alignment = GetIntegerExpression(&pnd);
}
if( lastst != begin)
error(ERR_INCOMPLETE);
else {
NextToken();
ParseMembers(sp,tp,ztype);
}
head = tp;
}
isStructDecl = psd;
return ret;
}
// Class declarations have the form:
//
// class identifier [: base class]
// {
// class members
// }
//
// We could also have a forward reference:
//
// class identifier;
//
// Or a pointer to a class:
//
// class *identifier;
//
int ClassDeclaration::Parse(int ztype)
{
SYM *sp, *bcsp;
int ret;
int psd;
ENODE nd;
ENODE *pnd = &nd;
char *idsave;
int alignment;
SYM *cls;
cls = currentClass;
dfs.puts("<ParseClassDeclaration>\n");
alignment = 0;
isTypedef = TRUE;
NextToken();
if (lastst != id) {
error(ERR_SYNTAX);
goto lxit;
}
// ws = allocSYM();
idsave = my_strdup(lastid);
// ws->name = idsave;
// ws->storage_class = sc_typedef;
// Passes lastid onto struct parsing
psd = isStructDecl;
isStructDecl++;
ret = 0;
bit_offset = 0;
bit_next = 0;
bit_width = -1;
dfs.printf("---------------------------------");
dfs.printf("Class decl:%s\n", lastid);
dfs.printf("---------------------------------");
if((sp = tagtable.Find(std::string(lastid),false)) == NULL) {
sp = allocSYM();
sp->SetName(*(new std::string(lastid)));
sp->tp = nullptr;
NextToken();
dfs.printf("A");
if (lastst == kw_align) {
NextToken();
alignment = GetIntegerExpression(&pnd);
}
else
alignment = AL_STRUCT;
// Could be a forward structure declaration like:
// struct buf;
if (lastst==semicolon) {
dfs.printf("B");
ret = 1;
printf("classdecl insert1\r\n");
tagtable.insert(sp);
NextToken();
}
// Defining a pointer to an unknown struct ?
else if (lastst == star) {
dfs.printf("C");
printf("classdecl insert2\r\n");
tagtable.insert(sp);
}
else if (lastst==colon) {
dfs.printf("D");
NextToken();
// Absorb and ignore public/private keywords
if (lastst == kw_public || lastst==kw_private)
NextToken();
if (lastst != id) {
error(ERR_SYNTAX);
goto lxit;
}
bcsp = tagtable.Find(std::string(lastid),false);
if (bcsp==nullptr) {
error(ERR_UNDEFINED);
goto lxit;
}
dfs.printf("E");
// Copy the type chain of base class
//sp->tp = TYP::Copy(bcsp->tp);
// Start off at the size of the base.
sp->tp = allocTYP();
sp->tp->lst.SetBase(bcsp->GetIndex());
dfs.printf("Set base class: %d\n", sp->tp->lst.base);
sp->tp->size = bcsp->tp->size;
sp->tp->type = (e_bt)ztype;
sp->tp->typeno = typeno++;
sp->tp->sname = new std::string(*sp->name);
sp->tp->alignment = alignment;
sp->storage_class = sc_type;
NextToken();
if (lastst != begin) {
error(ERR_INCOMPLETE);
goto lxit;
}
/*
sp->tp = allocTYP();
sp->tp->typeno = typeno++;
sp->tp->sname = new std::string(*sp->name);
sp->tp->alignment = alignment;
sp->tp->type = (e_bt)ztype;
sp->tp->lst.SetBase(bcsp->GetIndex());
sp->storage_class = sc_type;
*/
tagtable.insert(sp);
NextToken();
currentClass = sp;
dfs.printf("f");
ParseMembers(sp,ztype);
dfs.printf("G");
}
else if(lastst != begin)
error(ERR_INCOMPLETE);
else {
if (sp->tp == nullptr) {
sp->tp = allocTYP();
}
sp->tp->size = 0;
sp->tp->typeno = typeno++;
sp->tp->sname = new std::string(*sp->name);
sp->tp->alignment = alignment;
sp->tp->type = (e_bt)ztype;
sp->tp->lst.SetBase(0);
sp->storage_class = sc_type;
tagtable.insert(sp);
NextToken();
currentClass = sp;
ParseMembers(sp,ztype);
}
}
// Else the class was found in the tag table.
else {
NextToken();
if (lastst==kw_align) {
NextToken();
sp->tp->alignment = GetIntegerExpression(&pnd);
}
if (lastst==begin) {
NextToken();
currentClass = sp;
ParseMembers(sp,ztype);
}
}
head = sp->tp;
isStructDecl = psd;
lxit:
isTypedef = TRUE;
if (classname) delete classname;
classname = new std::string(idsave);
currentClass = cls;
dfs.puts("</ParseClassDeclaration>\n");
return ret;
}