mirror of
https://github.com/byteworksinc/ORCA-C.git
synced 2024-12-22 23:29:27 +00:00
Evaluate some kinds of long long operations in constant expressions.
Other operations on long long (e.g. arithmetic) are still not supported in constant expressions.
This commit is contained in:
Stephen Heumann
parent
8faafcc7c8
commit
a3050c76a9
170
Expression.pas
170
Expression.pas
@ -901,6 +901,7 @@ var
|
||||
op: tokenPtr; {work pointer}
|
||||
op1,op2: longint; {for evaluating constant expressions}
|
||||
rop1,rop2: double; {for evaluating double expressions}
|
||||
llop1, llop2: longlong; {for evaluating long long expressions}
|
||||
tp: typePtr; {cast type}
|
||||
unsigned: boolean; {is the term unsigned?}
|
||||
|
||||
@ -969,6 +970,39 @@ var
|
||||
end; {IntVal}
|
||||
|
||||
|
||||
procedure GetLongLongVal (var result: longlong; token: tokenType);
|
||||
|
||||
{ convert an operand to a long long value }
|
||||
|
||||
begin {LongLongVal}
|
||||
if token.kind = intconst then begin
|
||||
result.lo := token.ival;
|
||||
if result.lo < 0 then
|
||||
result.hi := -1
|
||||
else
|
||||
result.hi := 0;
|
||||
end {if}
|
||||
else if token.kind = uintconst then begin
|
||||
result.lo := token.ival & $0000FFFF;
|
||||
result.hi := 0;
|
||||
end {else if}
|
||||
else if token.kind = longconst then begin
|
||||
result.lo := token.lval;
|
||||
if result.lo < 0 then
|
||||
result.hi := -1
|
||||
else
|
||||
result.hi := 0;
|
||||
end {else if}
|
||||
else if token.kind = ulongconst then begin
|
||||
result.lo := token.lval;
|
||||
result.hi := 0;
|
||||
end {else if}
|
||||
else {if token.kind in [longlongconst,ulonglongconst] then} begin
|
||||
result := token.qval;
|
||||
end; {else}
|
||||
end; {LongLongVal}
|
||||
|
||||
|
||||
function PPKind (token: tokenType): tokenEnum;
|
||||
|
||||
{ adjust kind of token for use in preprocessor expression }
|
||||
@ -1058,10 +1092,6 @@ var
|
||||
op^.left := Pop;
|
||||
kindRight := op^.right^.token.kind;
|
||||
kindLeft := op^.left^.token.kind;
|
||||
if not (kind in [normalExpression,autoInitializerExpression]) then
|
||||
if (kindLeft in [longlongconst,ulonglongconst])
|
||||
or (kindRight in [longlongconst,ulonglongconst]) then
|
||||
Error(157);
|
||||
if kindRight in [intconst,uintconst,longconst,ulongconst] then begin
|
||||
if kindLeft in [intconst,uintconst,longconst,ulongconst] then begin
|
||||
if kind = preprocessorExpression then begin
|
||||
@ -1200,6 +1230,90 @@ var
|
||||
goto 1;
|
||||
end; {if}
|
||||
end; {if}
|
||||
if kindRight in [intconst,uintconst,longconst,ulongconst,
|
||||
longlongconst,ulonglongconst] then begin
|
||||
if kindLeft in [intconst,uintconst,longconst,ulongconst,
|
||||
longlongconst,ulonglongconst] then begin
|
||||
|
||||
if kind = preprocessorExpression then begin
|
||||
kindLeft := PPKind(op^.left^.token);
|
||||
kindRight := PPKind(op^.right^.token);
|
||||
end; {if}
|
||||
|
||||
{do the usual binary conversions}
|
||||
if (kindRight = ulonglongconst) or (kindLeft = ulonglongconst) then
|
||||
ekind := ulonglongconst
|
||||
else
|
||||
ekind := longlongconst;
|
||||
|
||||
GetLongLongVal(llop1, op^.left^.token);
|
||||
GetLongLongVal(llop2, op^.right^.token);
|
||||
dispose(op^.right);
|
||||
op^.right := nil;
|
||||
dispose(op^.left);
|
||||
op^.left := nil;
|
||||
|
||||
case op^.token.kind of
|
||||
barbarop : begin {||}
|
||||
op1 := ord((llop1.lo <> 0) or (llop1.hi <> 0) or
|
||||
(llop2.lo <> 0) or (llop2.hi <> 0));
|
||||
ekind := intconst;
|
||||
end;
|
||||
andandop : begin {&&}
|
||||
op1 := ord(((llop1.lo <> 0) or (llop1.hi <> 0)) and
|
||||
((llop2.lo <> 0) or (llop2.hi <> 0)));
|
||||
ekind := intconst;
|
||||
end;
|
||||
carotch : begin {^}
|
||||
llop1.lo := llop1.lo ! llop2.lo;
|
||||
llop1.hi := llop1.hi ! llop2.hi;
|
||||
end;
|
||||
barch : begin {|}
|
||||
llop1.lo := llop1.lo | llop2.lo;
|
||||
llop1.hi := llop1.hi | llop2.hi;
|
||||
end;
|
||||
andch : begin {&}
|
||||
llop1.lo := llop1.lo & llop2.lo;
|
||||
llop1.hi := llop1.hi & llop2.hi;
|
||||
end;
|
||||
eqeqop : begin {==}
|
||||
op1 := ord((llop1.lo = llop2.lo) and
|
||||
(llop1.hi = llop2.hi));
|
||||
ekind := intconst;
|
||||
end;
|
||||
exceqop : begin {!=}
|
||||
op1 := ord((llop1.lo <> llop2.lo) or
|
||||
(llop1.hi <> llop2.hi));
|
||||
ekind := intconst;
|
||||
end;
|
||||
ltch, {<}
|
||||
gtch, {>}
|
||||
lteqop, {<=}
|
||||
gteqop, {>=}
|
||||
ltltop, {<<}
|
||||
gtgtop, {>>}
|
||||
plusch, {+}
|
||||
minusch, {-}
|
||||
asteriskch, {*}
|
||||
slashch, {/}
|
||||
percentch: {%}
|
||||
if not (kind in [normalExpression,autoInitializerExpression])
|
||||
then
|
||||
Error(157);
|
||||
otherwise: Error(57);
|
||||
end; {case}
|
||||
op^.token.kind := ekind;
|
||||
if ekind in [longlongconst,ulonglongconst] then begin
|
||||
op^.token.qval := llop1;
|
||||
op^.token.class := longlongConstant;
|
||||
end {if}
|
||||
else begin
|
||||
op^.token.ival := long(op1).lsw;
|
||||
op^.token.class := intConstant;
|
||||
end; {else}
|
||||
goto 1;
|
||||
end; {if}
|
||||
end; {if}
|
||||
if op^.right^.token.kind in
|
||||
[intconst,uintconst,longconst,ulongconst,doubleconst] then
|
||||
if op^.left^.token.kind in
|
||||
@ -1262,7 +1376,15 @@ var
|
||||
op^.token.class := doubleConstant;
|
||||
op^.token.kind := doubleConst;
|
||||
end; {else}
|
||||
goto 1;
|
||||
end; {if}
|
||||
if op^.right^.token.kind in [intconst,uintconst,longconst,
|
||||
ulongconst,longlongconst,ulonglongconst,doubleconst] then
|
||||
if op^.left^.token.kind in [intconst,uintconst,longconst,
|
||||
ulongconst,longlongconst,ulonglongconst,doubleconst] then
|
||||
if not (kind in [normalExpression,autoInitializerExpression])
|
||||
then
|
||||
Error(157);
|
||||
1:
|
||||
end;
|
||||
|
||||
@ -1382,9 +1504,6 @@ var
|
||||
else if not (op^.token.kind in
|
||||
[typedef,plusplusop,minusminusop,opplusplus,opminusminus,uand]) then
|
||||
begin
|
||||
if not (kind in [normalExpression,autoInitializerExpression]) then
|
||||
if op^.left^.token.kind in [longlongconst,ulonglongconst] then
|
||||
Error(157);
|
||||
if (op^.left^.token.kind
|
||||
in [intconst,uintconst,longconst,ulongconst]) then begin
|
||||
|
||||
@ -1415,6 +1534,43 @@ var
|
||||
op^.token.ival := long(op1).lsw;
|
||||
end; {else}
|
||||
end {if}
|
||||
else if op^.left^.token.kind
|
||||
in [longlongconst,ulonglongconst] then begin
|
||||
|
||||
{evaluate a constant operation}
|
||||
ekind := op^.left^.token.kind;
|
||||
llop1 := op^.left^.token.qval;
|
||||
dispose(op^.left);
|
||||
op^.left := nil;
|
||||
case op^.token.kind of
|
||||
tildech : begin {~}
|
||||
llop1.lo := ~llop1.lo;
|
||||
llop1.hi := ~llop1.hi;
|
||||
end;
|
||||
excch : begin {!}
|
||||
op1 := ord((llop1.hi = 0) and (llop1.lo = 0));
|
||||
ekind := intconst;
|
||||
end;
|
||||
uminus : begin {unary -}
|
||||
llop1.lo := ~llop1.lo;
|
||||
llop1.hi := ~llop1.hi;
|
||||
llop1.lo := llop1.lo + 1;
|
||||
if llop1.lo = 0 then
|
||||
llop1.hi := llop1.hi + 1;
|
||||
end;
|
||||
uasterisk : Error(79); {unary *}
|
||||
otherwise: Error(57);
|
||||
end; {case}
|
||||
op^.token.kind := ekind;
|
||||
if ekind in [longlongconst,ulonglongconst] then begin
|
||||
op^.token.class := longlongConstant;
|
||||
op^.token.qval := llop1;
|
||||
end {if}
|
||||
else begin
|
||||
op^.token.class := intConstant;
|
||||
op^.token.ival := long(op1).lsw;
|
||||
end; {else}
|
||||
end {else if}
|
||||
else if op^.left^.token.kind = doubleconst then begin
|
||||
ekind := doubleconst; {evaluate a constant operation}
|
||||
rop1 := RealVal(op^.left^.token);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user