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Trying to check more of an expression, giving some more sophisticated error messages,and be less wasteful with space for subranges

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This commit is contained in:
ceriel 1986-11-17 11:41:28 +00:00
parent 22d4d72ef4
commit 9d0ee46068
21 changed files with 280 additions and 240 deletions
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21
lang/m2/comp/LLlex.c
View file

@ -76,10 +76,12 @@ GetString(upto)
/* Read a Modula-2 string, delimited by the character "upto". /* Read a Modula-2 string, delimited by the character "upto".
*/ */
register int ch; register int ch;
register struct string *str = (struct string *) Malloc(sizeof(struct string)); register struct string *str = (struct string *)
Malloc((unsigned) sizeof(struct string));
register char *p; register char *p;
register int len;
str->s_length = ISTRSIZE; len = ISTRSIZE;
str->s_str = p = Malloc((unsigned int) ISTRSIZE); str->s_str = p = Malloc((unsigned int) ISTRSIZE);
while (LoadChar(ch), ch != upto) { while (LoadChar(ch), ch != upto) {
if (class(ch) == STNL) { if (class(ch) == STNL) {
@ -95,15 +97,18 @@ GetString(upto)
break; break;
} }
*p++ = ch; *p++ = ch;
if (p - str->s_str == str->s_length) { if (p - str->s_str == len) {
str->s_str = Srealloc(str->s_str, str->s_str = Srealloc(str->s_str,
(unsigned int) str->s_length + RSTRSIZE); (unsigned int) len + RSTRSIZE);
p = str->s_str + str->s_length; p = str->s_str + len;
str->s_length += RSTRSIZE; len += RSTRSIZE;
} }
} }
*p = '\0';
str->s_length = p - str->s_str; str->s_length = p - str->s_str;
while (p - str->s_str < len) *p++ = '\0';
if (str->s_length == 0) str->s_length = 1; /* ??? string length
at least 1 ???
*/
return str; return str;
} }
@ -172,7 +177,7 @@ linedirective() {
* Remember the file name * Remember the file name
*/ */
if (!eofseen && strcmp(FileName,buf)) { if (!eofseen && strcmp(FileName,buf)) {
FileName = Salloc(buf,strlen(buf) + 1); FileName = Salloc(buf,(unsigned) strlen(buf) + 1);
} }
} }
if (eofseen) { if (eofseen) {

4
lang/m2/comp/Makefile
View file

@ -64,8 +64,8 @@ lint: Cfiles
sh -c 'if $(CC) nmclash.c > /dev/null 2>&1 ; then make Xlint ; else sh Resolve Xlint ; fi' sh -c 'if $(CC) nmclash.c > /dev/null 2>&1 ; then make Xlint ; else sh Resolve Xlint ; fi'
@rm -f nmclash.o a.out @rm -f nmclash.o a.out
clashes: $(SRC) $(HFILES) longnames: $(SRC) $(HFILES)
sh -c 'if test -f clashes ; then cclash -l7 clashes $? > Xclashes ; mv Xclashes clashes ; else cclash -l7 $? > clashes ; fi' sh -c 'if test -f longnames ; then prid -l7 longnames $? > Xlongnames ; mv Xlongnames longnames ; else prid -l7 $? > longnames ; fi'
# entry points not to be used directly # entry points not to be used directly

2
lang/m2/comp/Parameters
View file

@ -1,6 +1,6 @@
!File: errout.h !File: errout.h
#define ERROUT STDERR /* file pointer for writing messages */ #define ERROUT STDERR /* file pointer for writing messages */
#define MAXERR_LINE 5 /* maximum number of error messages given #define MAXERR_LINE 100 /* maximum number of error messages given
on the same input line. */ on the same input line. */

4
lang/m2/comp/Resolve
View file

@ -20,10 +20,10 @@ then
: :
else mkdir ../Xsrc else mkdir ../Xsrc
fi fi
make clashes make longnames
: remove code generating routines from the clashes list as they are defines. : remove code generating routines from the clashes list as they are defines.
: code generating routine names start with C_ : code generating routine names start with C_
sed '/^C_/d' < clashes > tmp$$ sed '/^C_/d' < longnames > tmp$$
cclash -c -l7 tmp$$ > ../Xsrc/Xclashes cclash -c -l7 tmp$$ > ../Xsrc/Xclashes
rm -f tmp$$ rm -f tmp$$
PW=`pwd` PW=`pwd`

2
lang/m2/comp/Version.c
View file

@ -1 +1 @@
char Version[] = "Version 0.7"; char Version[] = "ACK Modula-2 compiler Version 0.8";

222
lang/m2/comp/chk_expr.c
View file

@ -25,6 +25,20 @@
extern char *symbol2str(); extern char *symbol2str();
STATIC
Xerror(nd, mess, edf)
struct node *nd;
char *mess;
struct def *edf;
{
if (edf) {
if (edf->df_kind != D_ERROR) {
node_error(nd, "\"%s\": %s", edf->df_idf->id_text, mess);
}
}
else node_error(nd, "%s", mess);
}
int int
ChkVariable(expp) ChkVariable(expp)
register struct node *expp; register struct node *expp;
@ -37,7 +51,7 @@ ChkVariable(expp)
if (expp->nd_class == Def && if (expp->nd_class == Def &&
!(expp->nd_def->df_kind & (D_FIELD|D_VARIABLE))) { !(expp->nd_def->df_kind & (D_FIELD|D_VARIABLE))) {
node_error(expp, "variable expected"); Xerror(expp, "variable expected", expp->nd_def);
return 0; return 0;
} }
@ -63,7 +77,7 @@ ChkArrow(expp)
tp = expp->nd_right->nd_type; tp = expp->nd_right->nd_type;
if (tp->tp_fund != T_POINTER) { if (tp->tp_fund != T_POINTER) {
node_error(expp, "illegal operand for unary operator \"^\""); node_error(expp, "\"^\": illegal operand");
return 0; return 0;
} }
@ -82,22 +96,18 @@ ChkArr(expp)
*/ */
register struct type *tpl, *tpr; register struct type *tpl, *tpr;
int retval;
assert(expp->nd_class == Arrsel); assert(expp->nd_class == Arrsel);
assert(expp->nd_symb == '['); assert(expp->nd_symb == '[');
expp->nd_type = error_type; expp->nd_type = error_type;
if ( retval = ChkVariable(expp->nd_left) & ChkExpression(expp->nd_right);
!ChkVariable(expp->nd_left)
||
!ChkExpression(expp->nd_right)
||
expp->nd_left->nd_type == error_type
) return 0;
tpl = expp->nd_left->nd_type; tpl = expp->nd_left->nd_type;
tpr = expp->nd_right->nd_type; tpr = expp->nd_right->nd_type;
if (tpl == error_type || tpr == error_type) return 0;
if (tpl->tp_fund != T_ARRAY) { if (tpl->tp_fund != T_ARRAY) {
node_error(expp, "not indexing an ARRAY type"); node_error(expp, "not indexing an ARRAY type");
@ -116,7 +126,7 @@ ChkArr(expp)
} }
expp->nd_type = RemoveEqual(tpl->arr_elem); expp->nd_type = RemoveEqual(tpl->arr_elem);
return 1; return retval;
} }
#ifdef DEBUG #ifdef DEBUG
@ -168,11 +178,11 @@ ChkLinkOrName(expp)
!(left->nd_def->df_kind & (D_MODULE|D_VARIABLE|D_FIELD)) !(left->nd_def->df_kind & (D_MODULE|D_VARIABLE|D_FIELD))
) )
) { ) {
node_error(left, "illegal selection"); Xerror(left, "illegal selection", left->nd_def);
return 0; return 0;
} }
if (!(df = lookup(expp->nd_IDF, left->nd_type->rec_scope))) { if (!(df = lookup(expp->nd_IDF, left->nd_type->rec_scope, 1))) {
id_not_declared(expp); id_not_declared(expp);
return 0; return 0;
} }
@ -184,9 +194,7 @@ ChkLinkOrName(expp)
/* Fields of a record are always D_QEXPORTED, /* Fields of a record are always D_QEXPORTED,
so ... so ...
*/ */
node_error(expp, "identifier \"%s\" not exported from qualifying module", Xerror(expp, "not exported from qualifying module", df);
df->df_idf->id_text);
return 0;
} }
} }
@ -202,7 +210,6 @@ df->df_idf->id_text);
assert(expp->nd_class == Def); assert(expp->nd_class == Def);
df = expp->nd_def; df = expp->nd_def;
if (df->df_kind == D_ERROR) return 0;
if (df->df_kind & (D_ENUM | D_CONST)) { if (df->df_kind & (D_ENUM | D_CONST)) {
/* Replace an enum-literal or a CONST identifier by its value. /* Replace an enum-literal or a CONST identifier by its value.
@ -220,8 +227,7 @@ df->df_idf->id_text);
expp->nd_lineno = ln; expp->nd_lineno = ln;
} }
} }
return df->df_kind != D_ERROR;
return 1;
} }
STATIC int STATIC int
@ -238,7 +244,7 @@ ChkExLinkOrName(expp)
df = expp->nd_def; df = expp->nd_def;
if (!(df->df_kind & D_VALUE)) { if (!(df->df_kind & D_VALUE)) {
node_error(expp, "value expected"); Xerror(expp, "value expected", df);
} }
if (df->df_kind == D_PROCEDURE) { if (df->df_kind == D_PROCEDURE) {
@ -352,19 +358,18 @@ ChkSet(expp)
/* A type was given. Check it out /* A type was given. Check it out
*/ */
if (! ChkDesignator(nd)) return 0; if (! ChkDesignator(nd)) return 0;
assert(nd->nd_class == Def); assert(nd->nd_class == Def);
df = nd->nd_def; df = nd->nd_def;
if (!is_type(df) || if (!is_type(df) ||
(df->df_type->tp_fund != T_SET)) { (df->df_type->tp_fund != T_SET)) {
if (df->df_kind != D_ERROR) { if (df->df_kind != D_ERROR) {
node_error(expp, "type specifier does not represent a set type"); Xerror(expp, "not a set type", df);
} }
return 0; return 0;
} }
tp = df->df_type; tp = df->df_type;
FreeNode(expp->nd_left); FreeNode(nd);
expp->nd_left = 0; expp->nd_left = 0;
} }
else tp = bitset_type; else tp = bitset_type;
@ -412,8 +417,9 @@ node_error(expp, "type specifier does not represent a set type");
} }
STATIC struct node * STATIC struct node *
getarg(argp, bases, designator) getarg(argp, bases, designator, edf)
struct node **argp; struct node **argp;
struct def *edf;
{ {
/* This routine is used to fetch the next argument from an /* This routine is used to fetch the next argument from an
argument list. The argument list is indicated by "argp". argument list. The argument list is indicated by "argp".
@ -427,7 +433,7 @@ getarg(argp, bases, designator)
register struct node *left; register struct node *left;
if (! arg) { if (! arg) {
node_error(*argp, "too few arguments supplied"); Xerror(*argp, "too few arguments supplied", edf);
return 0; return 0;
} }
@ -443,7 +449,7 @@ getarg(argp, bases, designator)
if (bases) { if (bases) {
if (!(BaseType(left->nd_type)->tp_fund & bases)) { if (!(BaseType(left->nd_type)->tp_fund & bases)) {
node_error(arg, "unexpected type"); Xerror(arg, "unexpected parameter type", edf);
return 0; return 0;
} }
} }
@ -453,8 +459,9 @@ getarg(argp, bases, designator)
} }
STATIC struct node * STATIC struct node *
getname(argp, kinds) getname(argp, kinds, bases, edf)
struct node **argp; struct node **argp;
struct def *edf;
{ {
/* Get the next argument from argument list "argp". /* Get the next argument from argument list "argp".
The argument must indicate a definition, and the The argument must indicate a definition, and the
@ -464,7 +471,7 @@ getname(argp, kinds)
register struct node *left; register struct node *left;
if (!arg->nd_right) { if (!arg->nd_right) {
node_error(arg, "too few arguments supplied"); Xerror(arg, "too few arguments supplied", edf);
return 0; return 0;
} }
@ -473,15 +480,22 @@ getname(argp, kinds)
if (! ChkDesignator(left)) return 0; if (! ChkDesignator(left)) return 0;
if (left->nd_class != Def && left->nd_class != LinkDef) { if (left->nd_class != Def && left->nd_class != LinkDef) {
node_error(arg, "identifier expected"); Xerror(arg, "identifier expected", edf);
return 0; return 0;
} }
if (!(left->nd_def->df_kind & kinds)) { if (!(left->nd_def->df_kind & kinds)) {
node_error(arg, "unexpected type"); Xerror(arg, "unexpected parameter type", edf);
return 0; return 0;
} }
if (bases) {
if (!(left->nd_type->tp_fund & bases)) {
Xerror(arg, "unexpected parameter type", edf);
return 0;
}
}
*argp = arg; *argp = arg;
return left; return left;
} }
@ -493,16 +507,25 @@ ChkProcCall(expp)
/* Check a procedure call /* Check a procedure call
*/ */
register struct node *left; register struct node *left;
struct node *arg; struct def *edf = 0;
register struct paramlist *param; register struct paramlist *param;
char ebuf[256];
int retval = 1;
int cnt = 0;
left = expp->nd_left; left = expp->nd_left;
if (left->nd_class == Def || left->nd_class == LinkDef) {
edf = left->nd_def;
}
expp->nd_type = RemoveEqual(ResultType(left->nd_type)); expp->nd_type = RemoveEqual(ResultType(left->nd_type));
/* Check parameter list /* Check parameter list
*/ */
for (param = ParamList(left->nd_type); param; param = param->next) { for (param = ParamList(left->nd_type); param; param = param->next) {
if (!(left = getarg(&expp, 0, IsVarParam(param)))) return 0; if (!(left = getarg(&expp, 0, IsVarParam(param), edf))) {
return 0;
}
cnt++;
if (left->nd_symb == STRING) { if (left->nd_symb == STRING) {
TryToString(left, TypeOfParam(param)); TryToString(left, TypeOfParam(param));
} }
@ -510,17 +533,19 @@ ChkProcCall(expp)
left->nd_type, left->nd_type,
IsVarParam(param), IsVarParam(param),
left)) { left)) {
node_error(left, "type incompatibility in parameter"); sprint(ebuf, "type incompatibility in parameter %d",
return 0; cnt);
Xerror(left, ebuf, edf);
retval = 0;
} }
} }
if (expp->nd_right) { if (expp->nd_right) {
node_error(expp->nd_right, "too many parameters supplied"); Xerror(expp->nd_right, "too many parameters supplied", edf);
return 0; return 0;
} }
return 1; return retval;
} }
int int
@ -659,11 +684,12 @@ ChkBinOper(expp)
register struct node *left, *right; register struct node *left, *right;
struct type *tpl, *tpr; struct type *tpl, *tpr;
int allowed; int allowed;
int retval;
left = expp->nd_left; left = expp->nd_left;
right = expp->nd_right; right = expp->nd_right;
if (!ChkExpression(left) || !ChkExpression(right)) return 0; retval = ChkExpression(left) & ChkExpression(right);
tpl = BaseType(left->nd_type); tpl = BaseType(left->nd_type);
tpr = BaseType(right->nd_type); tpr = BaseType(right->nd_type);
@ -695,24 +721,27 @@ ChkBinOper(expp)
if (!TstAssCompat(tpl, ElementType(tpr))) { if (!TstAssCompat(tpl, ElementType(tpr))) {
/* Assignment compatible ??? /* Assignment compatible ???
I don't know! Should we be allowed to check I don't know! Should we be allowed to check
if a CARDINAL is a member of a BITSET??? if a INTEGER is a member of a BITSET???
*/ */
node_error(expp, "incompatible types for operator \"IN\""); node_error(expp, "\"IN\": incompatible types");
return 0; return 0;
} }
if (left->nd_class == Value && right->nd_class == Set) { if (left->nd_class == Value && right->nd_class == Set) {
cstset(expp); cstset(expp);
} }
return 1; return retval;
} }
if (!retval) return 0;
allowed = AllowedTypes(expp->nd_symb); allowed = AllowedTypes(expp->nd_symb);
if (!(tpr->tp_fund & allowed) || !(tpl->tp_fund & allowed)) { if (!(tpr->tp_fund & allowed) || !(tpl->tp_fund & allowed)) {
if (!((T_CARDINAL & allowed) && if (!((T_CARDINAL & allowed) &&
ChkAddress(tpl, tpr))) { ChkAddress(tpl, tpr))) {
node_error(expp,"operator \"%s\": illegal operand type(s)", symbol2str(expp->nd_symb)); node_error(expp, "\"%s\": illegal operand type(s)",
symbol2str(expp->nd_symb));
return 0; return 0;
} }
if (expp->nd_type->tp_fund & T_CARDINAL) { if (expp->nd_type->tp_fund & T_CARDINAL) {
@ -721,16 +750,15 @@ node_error(expp,"operator \"%s\": illegal operand type(s)", symbol2str(expp->nd_
} }
if (Boolean(expp->nd_symb) && tpl != bool_type) { if (Boolean(expp->nd_symb) && tpl != bool_type) {
node_error(expp,"operator \"%s\": illegal operand type(s)", symbol2str(expp->nd_symb)); node_error(expp, "\"%s\": illegal operand type(s)",
symbol2str(expp->nd_symb));
return 0; return 0;
} }
/* Operands must be compatible (distilled from Def 8.2) /* Operands must be compatible (distilled from Def 8.2)
*/ */
if (!TstCompat(tpl, tpr)) { if (!TstCompat(tpl, tpr)) {
node_error(expp, "incompatible types for operator \"%s\"", node_error(expp, "\"%s\": incompatible types", symbol2str(expp->nd_symb));
symbol2str(expp->nd_symb));
return 0; return 0;
} }
@ -810,14 +838,14 @@ ChkUnOper(expp)
default: default:
crash("ChkUnOper"); crash("ChkUnOper");
} }
node_error(expp, "illegal operand for unary operator \"%s\"", node_error(expp, "\"%s\": illegal operand", symbol2str(expp->nd_symb));
symbol2str(expp->nd_symb));
return 0; return 0;
} }
STATIC struct node * STATIC struct node *
getvariable(argp) getvariable(argp, edf)
struct node **argp; struct node **argp;
struct def *edf;
{ {
/* Get the next argument from argument list "argp". /* Get the next argument from argument list "argp".
It must obey the rules of "ChkVariable". It must obey the rules of "ChkVariable".
@ -826,7 +854,7 @@ getvariable(argp)
arg = arg->nd_right; arg = arg->nd_right;
if (!arg) { if (!arg) {
node_error(arg, "too few parameters supplied"); Xerror(arg, "too few parameters supplied", edf);
return 0; return 0;
} }
@ -844,14 +872,16 @@ ChkStandard(expp, left)
/* Check a call of a standard procedure or function /* Check a call of a standard procedure or function
*/ */
struct node *arg = expp; struct node *arg = expp;
register struct def *edf;
int std; int std;
assert(left->nd_class == Def); assert(left->nd_class == Def);
std = left->nd_def->df_value.df_stdname; std = left->nd_def->df_value.df_stdname;
edf = left->nd_def;
switch(std) { switch(std) {
case S_ABS: case S_ABS:
if (!(left = getarg(&arg, T_NUMERIC, 0))) return 0; if (!(left = getarg(&arg, T_NUMERIC, 0, edf))) return 0;
expp->nd_type = left->nd_type; expp->nd_type = left->nd_type;
if (left->nd_class == Value && if (left->nd_class == Value &&
expp->nd_type->tp_fund != T_REAL) { expp->nd_type->tp_fund != T_REAL) {
@ -861,28 +891,31 @@ ChkStandard(expp, left)
case S_CAP: case S_CAP:
expp->nd_type = char_type; expp->nd_type = char_type;
if (!(left = getarg(&arg, T_CHAR, 0))) return 0; if (!(left = getarg(&arg, T_CHAR, 0, edf))) return 0;
if (left->nd_class == Value) cstcall(expp, S_CAP); if (left->nd_class == Value) cstcall(expp, S_CAP);
break; break;
case S_CHR: case S_CHR:
expp->nd_type = char_type; expp->nd_type = char_type;
if (!(left = getarg(&arg, T_INTORCARD, 0))) return 0; if (!(left = getarg(&arg, T_INTORCARD, 0, edf))) return 0;
if (left->nd_class == Value) cstcall(expp, S_CHR); if (left->nd_class == Value) cstcall(expp, S_CHR);
break; break;
case S_FLOAT: case S_FLOAT:
expp->nd_type = real_type; expp->nd_type = real_type;
if (!(left = getarg(&arg, T_INTORCARD, 0))) return 0; if (!(left = getarg(&arg, T_INTORCARD, 0, edf))) return 0;
break; break;
case S_HIGH: case S_HIGH:
if (!(left = getarg(&arg, T_ARRAY|T_STRING|T_CHAR, 0))) return 0; if (!(left = getarg(&arg, T_ARRAY|T_STRING|T_CHAR, 0, edf))) {
return 0;
}
if (IsConformantArray(left->nd_type)) { if (IsConformantArray(left->nd_type)) {
/* A conformant array has no explicit index type /* A conformant array has no explicit index type,
??? So, what can we use as index-type ??? but it is a subrange with lower bound 0, so
it is of type CARDINAL !!!
*/ */
expp->nd_type = intorcard_type; expp->nd_type = card_type;
break; break;
} }
if (left->nd_type->tp_fund == T_ARRAY) { if (left->nd_type->tp_fund == T_ARRAY) {
@ -890,14 +923,17 @@ ChkStandard(expp, left)
cstcall(expp, S_MAX); cstcall(expp, S_MAX);
break; break;
} }
if (left->nd_type->tp_fund == T_CHAR) { if (left->nd_symb != STRING) {
if (left->nd_symb != STRING) { Xerror(left,"array parameter expected", edf);
node_error(left,"HIGH: array parameter expected"); return 0;
return 0;
}
} }
expp->nd_type = intorcard_type; expp->nd_type = card_type;
expp->nd_class = Value; expp->nd_class = Value;
/* Notice that we could disallow HIGH("") here by checking
that left->nd_type->tp_fund != T_CHAR || left->nd_INT != 0.
??? For the time being, we don't. !!!
Maybe the empty string should not be allowed at all.
*/
expp->nd_INT = left->nd_type->tp_fund == T_CHAR ? 0 : expp->nd_INT = left->nd_type->tp_fund == T_CHAR ? 0 :
left->nd_SLE - 1; left->nd_SLE - 1;
expp->nd_symb = INTEGER; expp->nd_symb = INTEGER;
@ -905,9 +941,7 @@ ChkStandard(expp, left)
case S_MAX: case S_MAX:
case S_MIN: case S_MIN:
if (!(left = getname(&arg, D_ISTYPE))) return 0; if (!(left = getname(&arg, D_ISTYPE, T_DISCRETE, edf))) {
if (!(left->nd_type->tp_fund & (T_DISCRETE))) {
node_error(left, "illegal type in %s", std == S_MAX ? "MAX" : "MIN");
return 0; return 0;
} }
expp->nd_type = left->nd_type; expp->nd_type = left->nd_type;
@ -915,17 +949,13 @@ node_error(left, "illegal type in %s", std == S_MAX ? "MAX" : "MIN");
break; break;
case S_ODD: case S_ODD:
if (!(left = getarg(&arg, T_INTORCARD, 0))) return 0; if (!(left = getarg(&arg, T_INTORCARD, 0, edf))) return 0;
expp->nd_type = bool_type; expp->nd_type = bool_type;
if (left->nd_class == Value) cstcall(expp, S_ODD); if (left->nd_class == Value) cstcall(expp, S_ODD);
break; break;
case S_ORD: case S_ORD:
if (!(left = getarg(&arg, T_DISCRETE, 0))) return 0; if (!(left = getarg(&arg, T_DISCRETE, 0, edf))) return 0;
if (left->nd_type->tp_size > word_size) {
node_error(left, "illegal type in argument of ORD");
return 0;
}
expp->nd_type = card_type; expp->nd_type = card_type;
if (left->nd_class == Value) cstcall(expp, S_ORD); if (left->nd_class == Value) cstcall(expp, S_ORD);
break; break;
@ -937,12 +967,12 @@ node_error(left, "illegal type in %s", std == S_MAX ? "MAX" : "MIN");
if (!warning_given) { if (!warning_given) {
warning_given = 1; warning_given = 1;
node_warning(expp, W_OLDFASHIONED, "NEW and DISPOSE are old-fashioned"); node_warning(expp, W_OLDFASHIONED, "NEW and DISPOSE are obsolete");
} }
} }
if (! (left = getvariable(&arg))) return 0; if (! (left = getvariable(&arg, edf))) return 0;
if (! (left->nd_type->tp_fund == T_POINTER)) { if (! (left->nd_type->tp_fund == T_POINTER)) {
node_error(left, "pointer variable expected"); Xerror(left, "pointer variable expected", edf);
return 0; return 0;
} }
if (left->nd_class == Def) { if (left->nd_class == Def) {
@ -974,23 +1004,19 @@ node_error(left, "illegal type in %s", std == S_MAX ? "MAX" : "MIN");
case S_TSIZE: /* ??? */ case S_TSIZE: /* ??? */
case S_SIZE: case S_SIZE:
expp->nd_type = intorcard_type; expp->nd_type = intorcard_type;
if (! getname(&arg, D_FIELD|D_VARIABLE|D_ISTYPE)) return 0; if (! getname(&arg, D_FIELD|D_VARIABLE|D_ISTYPE, 0, edf)) {
return 0;
}
cstcall(expp, S_SIZE); cstcall(expp, S_SIZE);
break; break;
case S_TRUNC: case S_TRUNC:
expp->nd_type = card_type; expp->nd_type = card_type;
if (!(left = getarg(&arg, T_REAL, 0))) return 0; if (!(left = getarg(&arg, T_REAL, 0, edf))) return 0;
break; break;
case S_VAL: case S_VAL:
{ if (!(left = getname(&arg, D_ISTYPE, T_DISCRETE, edf))) {
struct type *tp;
if (!(left = getname(&arg, D_ISTYPE))) return 0;
tp = left->nd_def->df_type;
if (!(tp->tp_fund & T_DISCRETE)) {
node_error(arg, "unexpected type");
return 0; return 0;
} }
expp->nd_type = left->nd_def->df_type; expp->nd_type = left->nd_def->df_type;
@ -998,26 +1024,25 @@ node_error(left, "illegal type in %s", std == S_MAX ? "MAX" : "MIN");
arg->nd_right = 0; arg->nd_right = 0;
FreeNode(arg); FreeNode(arg);
arg = expp; arg = expp;
if (!(left = getarg(&arg, T_INTORCARD, 0))) return 0; if (!(left = getarg(&arg, T_INTORCARD, 0, edf))) return 0;
if (left->nd_class == Value) cstcall(expp, S_VAL); if (left->nd_class == Value) cstcall(expp, S_VAL);
break; break;
}
case S_ADR: case S_ADR:
expp->nd_type = address_type; expp->nd_type = address_type;
if (!(left = getarg(&arg, 0, 1))) return 0; if (!(left = getarg(&arg, 0, 1, edf))) return 0;
break; break;
case S_DEC: case S_DEC:
case S_INC: case S_INC:
expp->nd_type = 0; expp->nd_type = 0;
if (! (left = getvariable(&arg))) return 0; if (! (left = getvariable(&arg, edf))) return 0;
if (! (left->nd_type->tp_fund & T_DISCRETE)) { if (! (left->nd_type->tp_fund & T_DISCRETE)) {
node_error(left,"illegal type in argument of %s",std == S_INC ? "INC" : "DEC"); Xerror(left,"illegal parameter type", edf);
return 0; return 0;
} }
if (arg->nd_right) { if (arg->nd_right) {
if (! getarg(&arg, T_INTORCARD, 0)) return 0; if (! getarg(&arg, T_INTORCARD, 0, edf)) return 0;
} }
break; break;
@ -1031,18 +1056,18 @@ node_error(left,"illegal type in argument of %s",std == S_INC ? "INC" : "DEC");
struct type *tp; struct type *tp;
expp->nd_type = 0; expp->nd_type = 0;
if (!(left = getvariable(&arg))) return 0; if (!(left = getvariable(&arg, edf))) return 0;
tp = left->nd_type; tp = left->nd_type;
if (tp->tp_fund != T_SET) { if (tp->tp_fund != T_SET) {
node_error(arg, "%s expects a SET parameter", std == S_EXCL ? "EXCL" : "INCL"); Xerror(arg, "SET parameter expected", edf);
return 0; return 0;
} }
if (!(left = getarg(&arg, T_DISCRETE, 0))) return 0; if (!(left = getarg(&arg, T_DISCRETE, 0, edf))) return 0;
if (!TstAssCompat(ElementType(tp), left->nd_type)) { if (!TstAssCompat(ElementType(tp), left->nd_type)) {
/* What type of compatibility do we want here? /* What type of compatibility do we want here?
apparently assignment compatibility! ??? ??? apparently assignment compatibility! ??? ???
*/ */
node_error(arg, "unexpected type"); Xerror(arg, "unexpected parameter type", edf);
return 0; return 0;
} }
break; break;
@ -1053,7 +1078,7 @@ node_error(arg, "%s expects a SET parameter", std == S_EXCL ? "EXCL" : "INCL");
} }
if (arg->nd_right) { if (arg->nd_right) {
node_error(arg->nd_right, "too many parameters supplied"); Xerror(arg->nd_right, "too many parameters supplied", edf);
return 0; return 0;
} }
@ -1074,7 +1099,7 @@ ChkCast(expp, left)
register struct node *arg = expp->nd_right; register struct node *arg = expp->nd_right;
if ((! arg) || arg->nd_right) { if ((! arg) || arg->nd_right) {
node_error(expp, "only one parameter expected in type cast"); Xerror(expp, "too many parameters in type cast", left->nd_def);
return 0; return 0;
} }
@ -1084,7 +1109,7 @@ node_error(expp, "only one parameter expected in type cast");
if (arg->nd_type->tp_size != left->nd_type->tp_size && if (arg->nd_type->tp_size != left->nd_type->tp_size &&
(arg->nd_type->tp_size > word_size || (arg->nd_type->tp_size > word_size ||
left->nd_type->tp_size > word_size)) { left->nd_type->tp_size > word_size)) {
node_error(expp, "unequal sizes in type cast"); Xerror(expp, "unequal sizes in type cast", left->nd_def);
} }
if (arg->nd_class == Value) { if (arg->nd_class == Value) {
@ -1132,8 +1157,7 @@ no_desig(expp)
} }
STATIC int STATIC int
done_before(expp) done_before()
struct node *expp;
{ {
return 1; return 1;
} }

21
lang/m2/comp/code.c
View file

@ -65,6 +65,7 @@ CodeString(nd)
} }
} }
STATIC
CodePadString(nd, sz) CodePadString(nd, sz)
register struct node *nd; register struct node *nd;
arith sz; arith sz;
@ -96,7 +97,7 @@ CodeExpr(nd, ds, true_label, false_label)
if (tp->tp_fund == T_REAL) fp_used = 1; if (tp->tp_fund == T_REAL) fp_used = 1;
switch(nd->nd_class) { switch(nd->nd_class) {
case Def: case Def:
if (nd->nd_def->df_kind == D_PROCEDURE) { if (nd->nd_def->df_kind & (D_PROCEDURE|D_PROCHEAD)) {
C_lpi(NameOfProc(nd->nd_def)); C_lpi(NameOfProc(nd->nd_def));
ds->dsg_kind = DSG_LOADED; ds->dsg_kind = DSG_LOADED;
break; break;
@ -380,7 +381,7 @@ CodeParameters(param, arg)
} }
} }
else if (left->nd_symb == STRING) { else if (left->nd_symb == STRING) {
C_loc(left->nd_SLE - 1); C_loc(left->nd_SLE);
} }
else if (tp->arr_elem == word_type) { else if (tp->arr_elem == word_type) {
C_loc((left_type->tp_size+word_size-1) / word_size - 1); C_loc((left_type->tp_size+word_size-1) / word_size - 1);
@ -403,8 +404,10 @@ CodeParameters(param, arg)
if (left_type->tp_fund == T_STRING) { if (left_type->tp_fund == T_STRING) {
CodePadString(left, tp->tp_size); CodePadString(left, tp->tp_size);
} }
else CodePExpr(left); else {
RangeCheck(left_type, tp); CodePExpr(left);
RangeCheck(left_type, tp);
}
} }
} }
@ -413,7 +416,7 @@ CodeStd(nd)
{ {
register struct node *arg = nd->nd_right; register struct node *arg = nd->nd_right;
register struct node *left = 0; register struct node *left = 0;
register struct type *tp = 0; register struct type *tp;
int std = nd->nd_left->nd_def->df_value.df_stdname; int std = nd->nd_left->nd_def->df_value.df_stdname;
if (arg) { if (arg) {
@ -426,15 +429,11 @@ CodeStd(nd)
case S_ABS: case S_ABS:
CodePExpr(left); CodePExpr(left);
if (tp->tp_fund == T_INTEGER) { if (tp->tp_fund == T_INTEGER) {
if (tp->tp_size == int_size) { if (tp->tp_size == int_size) C_cal("_absi");
C_cal("_absi");
}
else C_cal("_absl"); else C_cal("_absl");
} }
else if (tp->tp_fund == T_REAL) { else if (tp->tp_fund == T_REAL) {
if (tp->tp_size == float_size) { if (tp->tp_size == float_size) C_cal("_absf");
C_cal("_absf");
}
else C_cal("_absd"); else C_cal("_absd");
} }
C_asp(tp->tp_size); C_asp(tp->tp_size);

2
lang/m2/comp/cstoper.c
View file

@ -72,7 +72,7 @@ cstbin(expp)
*/ */
register arith o1 = expp->nd_left->nd_INT; register arith o1 = expp->nd_left->nd_INT;
register arith o2 = expp->nd_right->nd_INT; register arith o2 = expp->nd_right->nd_INT;
register int uns = expp->nd_type != int_type; register int uns = expp->nd_left->nd_type != int_type;
assert(expp->nd_class == Oper); assert(expp->nd_class == Oper);
assert(expp->nd_left->nd_class == Value); assert(expp->nd_left->nd_class == Value);

60
lang/m2/comp/declar.g
View file

@ -50,13 +50,14 @@ ProcedureHeading(struct def **pdf; int type;)
; ;
block(struct node **pnd;) : block(struct node **pnd;) :
declaration* [ %persistent
[ { return_occurred = 0; } declaration
]*
{ return_occurred = 0; *pnd = 0; }
[ %persistent
BEGIN BEGIN
StatementSequence(pnd) StatementSequence(pnd)
| ]?
{ *pnd = 0; }
]
END END
; ;
@ -72,7 +73,7 @@ declaration:
ModuleDeclaration ';' ModuleDeclaration ';'
; ;
FormalParameters(struct paramlist *ppr; arith *parmaddr; struct type **ptp;): FormalParameters(struct paramlist **ppr; arith *parmaddr; struct type **ptp;):
'(' '('
[ [
FPSection(ppr, parmaddr) FPSection(ppr, parmaddr)
@ -160,10 +161,15 @@ enumeration(struct type **ptp;)
} : } :
'(' IdentList(&EnumList) ')' '(' IdentList(&EnumList) ')'
{ {
*ptp = standard_type(T_ENUMERATION, 1, (arith) 1); *ptp = standard_type(T_ENUMERATION, int_align, int_size);
EnterEnumList(EnumList, *ptp); EnterEnumList(EnumList, *ptp);
if ((*ptp)->enm_ncst > 256) { /* ??? is this reasonable ??? */ if (ufit((*ptp)->enm_ncst-1, 1)) {
error("too many enumeration literals"); (*ptp)->tp_size = 1;
(*ptp)->tp_align = 1;
}
else if (ufit((*ptp)->enm_ncst-1, short_size)) {
(*ptp)->tp_size = short_size;
(*ptp)->tp_align = short_align;
} }
} }
; ;
@ -263,7 +269,7 @@ FieldList(struct scope *scope; arith *cnt; int *palign;)
/* Also accept old fashioned Modula-2 syntax, but give a warning. /* Also accept old fashioned Modula-2 syntax, but give a warning.
Sorry for the complicated code. Sorry for the complicated code.
*/ */
[ qualident(0, (struct def **) 0, (char *) 0, &nd1) [ qualident(&nd1)
{ nd = nd1; } { nd = nd1; }
[ ':' qualtype(&tp) [ ':' qualtype(&tp)
/* This is correct, in both kinds of Modula-2, if /* This is correct, in both kinds of Modula-2, if
@ -387,7 +393,7 @@ PointerType(struct type **ptp;)
} : } :
POINTER TO POINTER TO
{ *ptp = construct_type(T_POINTER, NULLTYPE); } { *ptp = construct_type(T_POINTER, NULLTYPE); }
[ %if ( lookup(dot.TOK_IDF, CurrentScope) [ %if ( lookup(dot.TOK_IDF, CurrentScope, 1)
/* Either a Module or a Type, but in both cases defined /* Either a Module or a Type, but in both cases defined
in this scope, so this is the correct identification in this scope, so this is the correct identification
*/ */
@ -422,17 +428,33 @@ PointerType(struct type **ptp;)
qualtype(struct type **ptp;) qualtype(struct type **ptp;)
{ {
struct def *df = 0; register struct node *nd;
struct node *nd1; /* because &nd is illegal */
} : } :
qualident(D_ISTYPE, &df, "type", (struct node **) 0) qualident(&nd1)
{ if (df && !(*ptp = df->df_type)) { { nd = nd1;
error("type \"%s\" not declared", *ptp = error_type;
df->df_idf->id_text); if (ChkDesignator(nd)) {
*ptp = error_type; if (nd->nd_class != Def) {
} node_error(nd, "type expected");
} }
; else {
register struct def *df = nd->nd_def;
if (df->df_kind&(D_ISTYPE|D_FORWARD|D_ERROR)) {
if (! df->df_type) {
node_error(nd,"type \"%s\" not (yet) declared", df->df_idf->id_text);
}
else *ptp = df->df_type;
}
else {
node_error(nd,"identifier \"%s\" is not a type", df->df_idf->id_text);
}
}
}
FreeNode(nd);
}
;
ProcedureType(struct type **ptp;) ProcedureType(struct type **ptp;)
{ {

5
lang/m2/comp/def.H
View file

@ -90,9 +90,8 @@ struct def { /* list of definitions for a name */
#define is_type(dfx) ((dfx)->df_kind & D_ISTYPE) #define is_type(dfx) ((dfx)->df_kind & D_ISTYPE)
char df_flags; char df_flags;
#define D_NOREG 0x01 /* set if it may not reside in a register */ #define D_NOREG 0x01 /* set if it may not reside in a register */
#define D_USED 0x02 /* set if used */ #define D_USED 0x02 /* set if used (future use ???) */
#define D_DEFINED 0x04 /* set if it is assigned a value */ #define D_DEFINED 0x04 /* set if it is assigned a value (future use ???) */
#define D_REFERRED 0x08 /* set if it is referred to */
#define D_VARPAR 0x10 /* set if it is a VAR parameter */ #define D_VARPAR 0x10 /* set if it is a VAR parameter */
#define D_VALPAR 0x20 /* set if it is a value parameter */ #define D_VALPAR 0x20 /* set if it is a value parameter */
#define D_EXPORTED 0x40 /* set if exported */ #define D_EXPORTED 0x40 /* set if exported */

6
lang/m2/comp/def.c
View file

@ -91,14 +91,14 @@ define(id, scope, kind)
*/ */
register struct def *df; register struct def *df;
df = lookup(id, scope); df = lookup(id, scope, 1);
if ( /* Already in this scope */ if ( /* Already in this scope */
df df
|| /* A closed scope, and id defined in the pervasive scope */ || /* A closed scope, and id defined in the pervasive scope */
( (
scopeclosed(scope) scopeclosed(scope)
&& &&
(df = lookup(id, PervasiveScope))) (df = lookup(id, PervasiveScope, 1)))
) { ) {
switch(df->df_kind) { switch(df->df_kind) {
case D_HIDDEN: case D_HIDDEN:
@ -234,7 +234,7 @@ DeclProc(type, id)
else { else {
char *name; char *name;
df = lookup(id, CurrentScope); df = lookup(id, CurrentScope, 1);
if (df && df->df_kind == D_PROCHEAD) { if (df && df->df_kind == D_PROCHEAD) {
/* C_exp already generated when we saw the definition /* C_exp already generated when we saw the definition
in the definition module in the definition module

14
lang/m2/comp/defmodule.c
View file

@ -16,6 +16,7 @@
#include "main.h" #include "main.h"
#include "node.h" #include "node.h"
#include "type.h" #include "type.h"
#include "misc.h"
#ifdef DEBUG #ifdef DEBUG
long sys_filesize(); long sys_filesize();
@ -57,7 +58,7 @@ GetDefinitionModule(id, incr)
struct scopelist *vis; struct scopelist *vis;
level += incr; level += incr;
df = lookup(id, GlobalScope); df = lookup(id, GlobalScope, 1);
if (!df) { if (!df) {
/* Read definition module. Make an exception for SYSTEM. /* Read definition module. Make an exception for SYSTEM.
*/ */
@ -66,7 +67,7 @@ GetDefinitionModule(id, incr)
} }
else { else {
open_scope(CLOSEDSCOPE); open_scope(CLOSEDSCOPE);
if (GetFile(id->id_text)) { if (!is_anon_idf(id) && GetFile(id->id_text)) {
DefModule(); DefModule();
if (level == 1) { if (level == 1) {
/* The module is directly imported by /* The module is directly imported by
@ -90,14 +91,17 @@ GetDefinitionModule(id, incr)
vis = CurrVis; vis = CurrVis;
close_scope(SC_CHKFORW); close_scope(SC_CHKFORW);
} }
df = lookup(id, GlobalScope); df = lookup(id, GlobalScope, 1);
if (! df) { if (! df) {
df = MkDef(id, GlobalScope, D_ERROR); df = MkDef(id, GlobalScope, D_ERROR);
df->df_type = error_type; df->df_type = error_type;
df->mod_vis = CurrVis; df->mod_vis = vis;
return df;
} }
} }
else if (df == Defined) {
error("cannot import from currently defined module");
df->df_kind = D_ERROR;
}
assert(df); assert(df);
level -= incr; level -= incr;
return df; return df;

2
lang/m2/comp/desig.c
View file

@ -219,7 +219,6 @@ CodeVarDesig(df, ds)
*/ */
assert(ds->dsg_kind == DSG_INIT); assert(ds->dsg_kind == DSG_INIT);
SetUsed(df);
if (df->var_addrgiven) { if (df->var_addrgiven) {
/* the programmer specified an address in the declaration of /* the programmer specified an address in the declaration of
the variable. Generate code to push the address. the variable. Generate code to push the address.
@ -293,7 +292,6 @@ CodeDesig(nd, ds)
case Def: case Def:
df = nd->nd_def; df = nd->nd_def;
SetUsed(df);
switch(df->df_kind) { switch(df->df_kind) {
case D_FIELD: case D_FIELD:
CodeFieldDesig(df, ds); CodeFieldDesig(df, ds);

12
lang/m2/comp/enter.c
View file

@ -273,7 +273,7 @@ ForwDef(ids, scope)
*/ */
register struct def *df; register struct def *df;
if (!(df = lookup(ids->nd_IDF, scope))) { if (!(df = lookup(ids->nd_IDF, scope, 1))) {
df = define(ids->nd_IDF, scope, D_FORWARD); df = define(ids->nd_IDF, scope, D_FORWARD);
df->for_node = MkLeaf(Name, &(ids->nd_token)); df->for_node = MkLeaf(Name, &(ids->nd_token));
} }
@ -292,9 +292,7 @@ EnterExportList(Idlist, qualified)
register struct def *df, *df1; register struct def *df, *df1;
for (;idlist; idlist = idlist->next) { for (;idlist; idlist = idlist->next) {
extern struct def *NoImportlookup(); df = lookup(idlist->nd_IDF, CurrentScope, 0);
df = NoImportlookup(idlist->nd_IDF, CurrentScope);
if (!df) { if (!df) {
/* undefined item in export list /* undefined item in export list
@ -332,7 +330,7 @@ EnterExportList(Idlist, qualified)
scope imports it. scope imports it.
*/ */
df1 = lookup(idlist->nd_IDF, df1 = lookup(idlist->nd_IDF,
enclosing(CurrVis)->sc_scope); enclosing(CurrVis)->sc_scope, 1);
if (df1) { if (df1) {
/* It was already defined in the enclosing /* It was already defined in the enclosing
scope. There are two legal possibilities, scope. There are two legal possibilities,
@ -402,7 +400,7 @@ EnterFromImportList(Idlist, FromDef, FromId)
for (; idlist; idlist = idlist->next) { for (; idlist; idlist = idlist->next) {
if (forwflag) df = ForwDef(idlist, vis->sc_scope); if (forwflag) df = ForwDef(idlist, vis->sc_scope);
else if (! (df = lookup(idlist->nd_IDF, vis->sc_scope))) { else if (! (df = lookup(idlist->nd_IDF, vis->sc_scope, 1))) {
not_declared("identifier", idlist, " in qualifying module"); not_declared("identifier", idlist, " in qualifying module");
df = define(idlist->nd_IDF,vis->sc_scope,D_ERROR); df = define(idlist->nd_IDF,vis->sc_scope,D_ERROR);
} }
@ -434,7 +432,7 @@ EnterImportList(Idlist, local)
for (; idlist; idlist = idlist->next) { for (; idlist; idlist = idlist->next) {
DoImport(local ? DoImport(local ?
ForwDef(idlist, sc) : ForwDef(idlist, sc) :
GetDefinitionModule(idlist->nd_IDF) , GetDefinitionModule(idlist->nd_IDF, 1) ,
CurrentScope); CurrentScope);
} }
FreeNode(Idlist); FreeNode(Idlist);

36
lang/m2/comp/expression.g
View file

@ -31,39 +31,13 @@ number(struct node **p;) :
} }
; ;
qualident(int types; qualident(struct node **p;)
struct def **pdf;
char *str;
struct node **p;
)
{ {
struct node *nd;
} : } :
IDENT { nd = MkLeaf(Name, &dot); } IDENT { *p = MkLeaf(Name, &dot); }
[ [
selector(&nd) selector(p)
]* ]*
{ if (types && ChkDesignator(nd)) {
if (nd->nd_class != Def) {
node_error(nd, "%s expected", str);
}
else {
register struct def *df = nd->nd_def;
if ( !((types|D_ERROR) & df->df_kind)) {
if (df->df_kind == D_FORWARD) {
not_declared(str, nd, "");
}
else {
node_error(nd,"identifier \"%s\" is not a %s", df->df_idf->id_text, str);
}
}
if (pdf) *pdf = df;
}
}
if (!p) FreeNode(nd);
else *p = nd;
}
; ;
selector(struct node **pnd;): selector(struct node **pnd;):
@ -167,7 +141,7 @@ factor(register struct node **p;)
{ {
struct node *nd; struct node *nd;
} : } :
qualident(0, (struct def **) 0, (char *) 0, p) qualident(p)
[ [
designator_tail(p)? designator_tail(p)?
[ [
@ -231,7 +205,7 @@ element(struct node *nd;)
designator(struct node **pnd;) designator(struct node **pnd;)
: :
qualident(0, (struct def **) 0, (char *) 0, pnd) qualident(pnd)
designator_tail(pnd)? designator_tail(pnd)?
; ;

38
lang/m2/comp/lookup.c
View file

@ -15,7 +15,7 @@
#include "misc.h" #include "misc.h"
struct def * struct def *
lookup(id, scope) lookup(id, scope, import)
register struct idf *id; register struct idf *id;
struct scope *scope; struct scope *scope;
{ {
@ -43,7 +43,7 @@ lookup(id, scope)
df->next = id->id_def; df->next = id->id_def;
id->id_def = df; id->id_def = df;
} }
if (df->df_kind == D_IMPORT) { if (import && df->df_kind == D_IMPORT) {
assert(df->imp_def != 0); assert(df->imp_def != 0);
return df->imp_def; return df->imp_def;
} }
@ -51,38 +51,6 @@ lookup(id, scope)
return df; return df;
} }
struct def *
NoImportlookup(id, scope)
register struct idf *id;
struct scope *scope;
{
/* Look up a definition of an identifier in scope "scope".
Make the "def" list self-organizing.
Don't check if the definition is imported!
*/
register struct def *df, *df1;
/* Look in the chain of definitions of this "id" for one with scope
"scope".
*/
for (df = id->id_def, df1 = 0;
df && df->df_scope != scope;
df1 = df, df = df->next) { /* nothing */ }
if (df) {
/* Found it
*/
if (df1) {
/* Put the definition in front
*/
df1->next = df->next;
df->next = id->id_def;
id->id_def = df;
}
}
return df;
}
struct def * struct def *
lookfor(id, vis, give_error) lookfor(id, vis, give_error)
register struct node *id; register struct node *id;
@ -96,7 +64,7 @@ lookfor(id, vis, give_error)
register struct scopelist *sc = vis; register struct scopelist *sc = vis;
while (sc) { while (sc) {
df = lookup(id->nd_IDF, sc->sc_scope); df = lookup(id->nd_IDF, sc->sc_scope, 1);
if (df) return df; if (df) return df;
sc = nextvisible(sc); sc = nextvisible(sc);
} }

21
lang/m2/comp/options.c
View file

@ -10,6 +10,13 @@
#include "main.h" #include "main.h"
#include "warning.h" #include "warning.h"
#define MINIDFSIZE 14
#if MINIDFSIZE < 14
You fouled up! MINIDFSIZE has to be at least 14 or the compiler will not
recognize some keywords!
#endif
extern int idfsize; extern int idfsize;
static int ndirs; static int ndirs;
int warning_classes; int warning_classes;
@ -72,8 +79,14 @@ DoOption(text)
idfsize = txt2int(&t); idfsize = txt2int(&t);
if (*t || idfsize <= 0) if (*t || idfsize <= 0)
fatal("malformed -M option"); fatal("malformed -M option");
if (idfsize > IDFSIZE) if (idfsize > IDFSIZE) {
fatal("maximum identifier length is %d", IDFSIZE); idfsize = IDFSIZE;
warning(W_ORDINARY,"maximum identifier length is %d", IDFSIZE);
}
if (idfsize < MINIDFSIZE) {
warning(W_ORDINARY, "minimum identifier length is %d", MINIDFSIZE);
idfsize = MINIDFSIZE;
}
} }
break; break;
@ -113,6 +126,10 @@ DoOption(text)
if (size != (arith)0) int_size = size; if (size != (arith)0) int_size = size;
if (align != 0) int_align = align; if (align != 0) int_align = align;
break; break;
case 's': /* short (subranges) */
if (size != 0) short_size = size;
if (align != 0) short_align = align;
break;
case 'l': /* longint */ case 'l': /* longint */
if (size != (arith)0) long_size = size; if (size != (arith)0) long_size = size;
if (align != 0) long_align = align; if (align != 0) long_align = align;

8
lang/m2/comp/program.g
View file

@ -133,7 +133,7 @@ DefinitionModule
modules. Issue a warning. modules. Issue a warning.
*/ */
{ {
node_warning(exportlist, W_ORDINARY, "export list in definition module ignored"); node_warning(exportlist, W_OLDFASHIONED, "export list in definition module ignored");
FreeNode(exportlist); FreeNode(exportlist);
} }
| |
@ -183,7 +183,7 @@ definition
ProgramModule ProgramModule
{ {
struct def *GetDefinitionModule(); extern struct def *GetDefinitionModule();
register struct def *df; register struct def *df;
} : } :
MODULE MODULE
@ -210,7 +210,9 @@ ProgramModule
; ;
Module: Module:
{ open_scope(CLOSEDSCOPE); } { open_scope(CLOSEDSCOPE);
warning(W_ORDINARY, "Compiling a definition module");
}
DefinitionModule DefinitionModule
{ close_scope(SC_CHKFORW); } { close_scope(SC_CHKFORW); }
| |

7
lang/m2/comp/type.H
View file

@ -103,6 +103,7 @@ extern struct type
extern int extern int
word_align, word_align,
short_align,
int_align, int_align,
long_align, long_align,
float_align, float_align,
@ -113,6 +114,7 @@ extern int
extern arith extern arith
word_size, word_size,
dword_size, dword_size,
short_size,
int_size, int_size,
long_size, long_size,
float_size, float_size,
@ -149,3 +151,8 @@ struct type
#define BaseType(tpx) ((tpx)->tp_fund == T_SUBRANGE ? (tpx)->next : \ #define BaseType(tpx) ((tpx)->tp_fund == T_SUBRANGE ? (tpx)->next : \
(tpx)) (tpx))
#define IsConstructed(tpx) ((tpx)->tp_fund & T_CONSTRUCTED) #define IsConstructed(tpx) ((tpx)->tp_fund & T_CONSTRUCTED)
extern long full_mask[];
#define fit(n, i) (((n) + (0x80<<(((i)-1)*8)) & ~full_mask[(i)]) == 0)
#define ufit(n, i) (((n) & ~full_mask[(i)]) == 0)

23
lang/m2/comp/type.c
View file

@ -21,6 +21,7 @@
int int
word_align = AL_WORD, word_align = AL_WORD,
short_align = AL_SHORT,
int_align = AL_INT, int_align = AL_INT,
long_align = AL_LONG, long_align = AL_LONG,
float_align = AL_FLOAT, float_align = AL_FLOAT,
@ -32,6 +33,7 @@ arith
word_size = SZ_WORD, word_size = SZ_WORD,
dword_size = 2 * SZ_WORD, dword_size = 2 * SZ_WORD,
int_size = SZ_INT, int_size = SZ_INT,
short_size = SZ_SHORT,
long_size = SZ_LONG, long_size = SZ_LONG,
float_size = SZ_FLOAT, float_size = SZ_FLOAT,
double_size = SZ_DOUBLE, double_size = SZ_DOUBLE,
@ -280,6 +282,27 @@ subr_type(lb, ub)
res->sub_ub = ub->nd_INT; res->sub_ub = ub->nd_INT;
res->tp_size = tp->tp_size; res->tp_size = tp->tp_size;
res->tp_align = tp->tp_align; res->tp_align = tp->tp_align;
if (tp == card_type) {
if (ufit(res->sub_ub, 1)) {
res->tp_size = 1;
res->tp_align = 1;
}
else if (ufit(res->sub_ub, 2)) {
res->tp_size = short_size;
res->tp_align = short_align;
}
}
else if (tp == int_type) {
if (fit(res->sub_lb, 1) && fit(res->sub_ub, 1)) {
res->tp_size = 1;
res->tp_align = 1;
}
else if (fit(res->sub_lb, short_size) &&
fit(res->sub_ub, short_size)) {
res->tp_size = short_size;
res->tp_align = short_align;
}
}
return res; return res;
} }

10
lang/m2/comp/walk.c
View file

@ -636,9 +636,9 @@ DoForInit(nd, left)
nd->nd_class = Name; nd->nd_class = Name;
nd->nd_symb = IDENT; nd->nd_symb = IDENT;
if (! ChkVariable(nd) || if (!( ChkVariable(nd) &
! WalkExpr(left->nd_left) || WalkExpr(left->nd_left) &
! ChkExpression(left->nd_right)) return 0; ChkExpression(left->nd_right))) return 0;
df = nd->nd_def; df = nd->nd_def;
if (df->df_kind == D_FIELD) { if (df->df_kind == D_FIELD) {
@ -696,17 +696,17 @@ DoAssign(nd, left, right)
*/ */
struct desig dsl, dsr; struct desig dsl, dsr;
if (! ChkExpression(right) || ! ChkVariable(left)) return; if (! (ChkExpression(right) & ChkVariable(left))) return;
if (right->nd_symb == STRING) TryToString(right, left->nd_type); if (right->nd_symb == STRING) TryToString(right, left->nd_type);
dsr = InitDesig; dsr = InitDesig;
CodeExpr(right, &dsr, NO_LABEL, NO_LABEL);
if (! TstAssCompat(left->nd_type, right->nd_type)) { if (! TstAssCompat(left->nd_type, right->nd_type)) {
node_error(nd, "type incompatibility in assignment"); node_error(nd, "type incompatibility in assignment");
return; return;
} }
CodeExpr(right, &dsr, NO_LABEL, NO_LABEL);
if (complex(right->nd_type)) { if (complex(right->nd_type)) {
CodeAddress(&dsr); CodeAddress(&dsr);
} }