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Copy pathpascal2c.c
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pascal2c.c
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#include <stdio.h>
#include <alloc.h>
#include <string.h>
/****************************************************************
PASCAL2C - (c) 1989 G. Wheeler
Compile using the compact model if large programs
must be processed.
****************************************************************/
extern int withsearchlevel;
#include "tokens.h"
#include "symtab.h"
#include "parse.h"
#define TRUE 1
#define FALSE 0
#define _free(p) if (p!=NULL) free(p)
struct WithScope Withs[16];
extern char c;
int withlevel = 0;
int is_stdout = FALSE;
/* Indentation level */
int indentlevel = 0;
unsigned short mode=0;
/* Output Files */
FILE *errfile;
FILE *cfile;
FILE *hfile;
FILE *infile;
FILE *fp_now;
FILE *tempin;
FILE *tempout;
FILE *null_fp;
struct Lex_State *lexstate;
/* Constant expression value, and expression type */
long exprval;
unsigned short exprtype;
int min, max;
#define TYP(t) ((mode & (IN_RECORD|IN_TYPEDEF))==IN_TYPEDEF ?(t|TYP_TYPEDEF):(t&TYP_NOTYPE))
char modulenow[80];
char func_rtn_type[80];
void *Malloc(char *fn,int nbytes)
{
void *rtn = malloc(nbytes);
/* fprintf(errfile,"%04X : malloc(%d) called from %s\n",rtn,nbytes,fn);
fflush(errfile); */
return rtn;
}
void _Free(char *fn, void *p)
{
/* fprintf(errfile,"%04X : _free called from %s\n",p,fn);
fflush(errfile); */
_free(p);
}
void Open_Files(char *basename)
{
char fname[13];
char *tmp = fname;
strcpy(fname,basename);
while (*++tmp);
strcpy(tmp,".c");
if (is_stdout)
{
putchar(7);
cfile = stdout;
hfile = stdout;
}
else {
if ((cfile = fopen(fname,"wt"))==NULL)
{
fprintf(stderr,"Cannot create program file : %s\n",fname);
exit(0);
}
strcpy(tmp,".h");
if ((hfile = fopen(fname,"wt"))==NULL)
{
fprintf(stderr,"Cannot create header file : %s\n",fname);
exit(0);
}
}
strcpy(tmp,".err");
if ((errfile = fopen(fname,"wt"))==NULL)
{
fprintf(stderr,"Cannot create error file : %s\n",fname);
exit(0);
}
strcpy(tmp,".TPU");
if (access(fname,0)!=0)
{
strcpy(tmp,".PAS");
if (access(fname,0)!=0)
{
*tmp=0;
fprintf(stderr,"Cannot open file %s.tpu or %s.pas\n",fname);
exit(0);
}
}
if ((infile=fopen(fname,"rt"))==NULL)
{
fprintf(stderr,"Cannot open file : %s\n",fname);
exit(0);
}
null_fp = fopen("NUL","w");
fp_now = cfile;
}
void Close_Files(void)
{
fclose(hfile);
fclose(cfile);
fclose(errfile);
fclose(infile);
}
void Indent(void)
{
int i=8*indentlevel;
fputc('\n',fp_now);
while (i--) fputc(' ',fp_now);
}
void Dump_IDs(char *format, unsigned short type)
{
char *scratch;
while ((scratch=Sym_DeQueueID())!=NULL)
{
if (Sym_Insert(scratch,type))
fprintf(fp_now,format,symbol->cname);
}
}
char *append(char *dest, int free_dest,char *source, int free_source)
{
char *rtn;
int l1, l2;
l1 = dest ? strlen(dest) : 0;
l2 = source ? strlen(source) : 0;
rtn = Malloc("append",l1+l2+1);
*rtn = 0;
if (dest) strcpy(rtn,dest);
if (source) strcat(rtn,source);
if (free_dest) _Free("append",dest);
if (free_source) _Free("append",source);
return rtn;
}
/**************************************************************************/
void field_width(void)
{
if (is(COLON))
{
Lex_Accept(COLON);
fprintf(errfile,"Fieldwidth specifier on line %d ignored\n",linenum);
_free(expression());
if (is(COLON))
{
Lex_Accept(COLON);
_free(expression());
}
}
}
void ident_list(void)
{
Sym_QueueID(token);
Lex_Accept(IDENT);
while (is(COMMA))
{
Lex_Accept(COMMA);
Sym_QueueID(token);
Lex_Accept(IDENT);
}
}
void actual_param(void)
{
char *tmp;
fprintf(fp_now,tmp=expression());
_Free("actual_param",tmp);
if (is(COLON)) field_width();
}
void actual_param_list(void)
{
Lex_Accept(LEFTPAR);
actual_param();
while (is(COMMA))
{
Lex_Accept(COMMA);
fprintf(fp_now,",");
actual_param();
}
Lex_Accept(RIGHTPAR);
}
void program_heading(void)
{
Lex_Accept(PROGRAM);
fprintf(fp_now,"/* %s */\n\n",Sym_CName(token));
Lex_Accept(IDENT);
if (is(LEFTPAR))
{
Lex_Accept(LEFTPAR);
ident_list();
Lex_Accept(RIGHTPAR);
Dump_IDs("\nFILE *%s;",TYP_FILE);
}
fprintf(fp_now,"\n\n");
}
void uses_clause(void)
{
char *scratch;
extern char c;
FILE *temph, *tempc;
Lex_Accept(USES);
ident_list();
Lex_Accept(SEMICOLON);
temph = hfile;
tempc = cfile;
while ((scratch=Sym_DeQueueID())!=NULL)
{
char usefl[16];
FILE *tempout,*tempin;
struct Lex_State *lstate;
if (Sym_Insert(scratch,TYP_UNIT))
fprintf(tempc,"\n#include \"%s.h\"",symbol->cname);
strcpy(usefl,symbol->cname);
strcat(usefl,".pas");
if (access(usefl,0)==0)
{
tempout = fp_now;
tempin = infile;
fp_now = null_fp;
fprintf(errfile,"Processing use file %s\n",symbol->cname);
lstate = Lex_MarkPos();
if ((infile = fopen(usefl,"rt"))==NULL)
fprintf(stderr,"Cannot open file : %s\n",usefl);
else {
c = ' ';
Lex_GetToken();
if (is(UNIT)) unit();
else program();
}
fp_now = tempout;
infile = tempin;
Lex_ResumePos(lstate);
_Free("uses_clause",lstate);
}
else fprintf(stderr,"No access to file: %s\n",usefl);
}
cfile = cfile;
hfile = hfile;
fprintf(fp_now,"\n\n");
}
void label(void)
{
Sym_Insert(token,TYP_LABEL);
if (is(IDENT)) Lex_Accept(IDENT);
else Lex_Accept(NUMBER);
}
void label_decl_part(void)
{
Lex_Accept(LABEL);
label();
while (!is(SEMICOLON))
{
Lex_Accept(COMMA);
label();
}
Lex_Accept(SEMICOLON);
}
/********************************************************************/
void typed_constant(void)
{
if (is(NIL))
{
fprintf(fp_now,"NULL");
Lex_Accept(NIL);
}
else if (is(LEFTBRAK))
{
/* Set constant */
fprintf(fp_now,"SetCons(");
Lex_Accept(LEFTBRAK);
while (!is(RIGHTBRAK))
{
constant();
if (is(SUBRANGE))
{
Lex_Accept(SUBRANGE);
fprintf(fp_now,",RANGE,");
constant();
}
if (is(COMMA))
{
fputc(',',fp_now);
Lex_Accept(COMMA);
}
}
Lex_Accept(RIGHTBRAK);
}
else if (is(LEFTPAR))
{
Lex_Accept(LEFTPAR);
fputc('{',fp_now);
while (!is(RIGHTPAR))
{
if (is(IDENT))
{
lexstate = Lex_MarkPos();
Lex_Accept(IDENT);
if (is(COLON))
Lex_Accept(COLON);
else Lex_ResumePos(lexstate);
_Free("typed_constant",lexstate);
}
typed_constant();
if (is(COMMA) || is(SEMICOLON))
{
Lex_Accept(tokentype);
fputc(',',fp_now);
}
}
Lex_Accept(RIGHTPAR);
fputc('}',fp_now);
}
else if (is(_STRING))
{
fprintf(fp_now,token);
fprintf(errfile,"String: initialiser of typed constant on line %d\n",linenum);
Lex_Accept(_STRING);
}
else constant();
}
void const_decl_part(void)
{
char tmp[64],*e;
fprintf(fp_now,"\n\n");
Lex_Accept(CONST);
do {
strncpy(tmp,token,63);
strupr(tmp);
Lex_Accept(IDENT);
if (is(COLON))
{
Lex_Accept(COLON);
type(tmp);
Lex_Accept(EQUAL);
fprintf(fp_now," = ");
typed_constant();
fprintf(fp_now,";");
}
else {
int val;
fprintf(fp_now,"\n#define %s\t",tmp);
Lex_Accept(EQUAL);
val=constant();
Sym_InsertConst(tmp,exprtype,val);
}
Lex_Accept(SEMICOLON);
} while (is(IDENT));
fprintf(fp_now,"\n\n");
}
/********************************/
/* Type definitions */
/********************************/
unsigned short ordinal_type(char *typname)
{
char typtmp[64];
SYMENTPTR short rtn;
unsigned short typ;
int close_comment=FALSE;
if (!InMode(IN_ARRAY))
{
strncpy(typtmp,typname,63);
typname = typtmp;
}
else typname = NULL;
min=max=0;
if (tokentype==LEFTPAR)
{
/* Enumeration type */
int enumval=1;
Lex_Accept(LEFTPAR);
if (!InMode(IN_ARRAY))
{
strupr(token);
fprintf(fp_now,"enum { %s",token);
Sym_InsertConst(token,TYP_CONSTANT|TYP_SHORT,0);
}
Lex_Accept(IDENT);
while (is(COMMA))
{
Lex_Accept(COMMA);
if (!InMode(IN_ARRAY))
{
strupr(token);
fprintf(fp_now,", %s",token);
Sym_InsertConst(token,TYP_CONSTANT|TYP_SHORT,enumval++);
}
Lex_Accept(IDENT);
max++;
}
if (!InMode(IN_ARRAY)) fprintf(fp_now," } ");
typ = TYP_ENUM;
Lex_Accept(RIGHTPAR);
}
else if (Sym_LookUp(token), symbol && (symbol->type & TYP_TYPEDEF))
{
typ = symbol->type;
if (!InMode(IN_ARRAY))
fprintf(fp_now,"%s\t",symbol->cname);
min = symbol->aux.o.min;
max = symbol->aux.o.max;
Lex_Accept(tokentype);
}
else if (is(IDENT) || is(NUMBER) || is(MINUS) || is(PLUS))
{
/* Subrange type */
if (!InMode(IN_ARRAY))
{
fprintf(fp_now,"/* Subrange ");
close_comment=TRUE;
}
min = constant();
Lex_Accept(SUBRANGE);
if (close_comment) fprintf(fp_now,"..");
max = constant();
typ = TYP_SUBRANGE;
if (close_comment) fprintf(fp_now," */");
if (!InMode(IN_ARRAY))
{
Indent();
fprintf(fp_now,"int\t");
}
}
typ = TYP(typ);
if (!InMode(IN_ARRAY))
{
if (Sym_InsertOrdinal(typname,TYP(typ),min,max))
if (!InMode(IN_ARRAY))
fprintf(fp_now,symbol->cname);
}
else if (!InMode(IN_ARRAY))
{
strlwr(typname);
fprintf(fp_now,typname);
}
return typ;
}
/*****************************************************************
unsigned short real_type(char *typname)
{
Sym_LookUp(token);
Lex_Accept(tokentype);
fprintf(fp_now,"%s\t",symbol->cname);
if (!InMode(IN_ARRAY))
{
if (Sym_Insert(typname,TYP(symbol->type)))
fprintf(fp_now,symbol->cname);
}
else {
strlwr(typname);
fprintf(fp_now,typname);
}
return TYP(symbol->type);
}
******************************************************************/
unsigned short string_type(char *typname)
{
Lex_Accept(STRING);
if (!InMode(IN_ARRAY)) Sym_Insert(typname,TYP(TYP_STRING));
else {
symbol=NULL;
strlwr(typname);
}
if (is(LEFTBRAK))
{
Lex_Accept(LEFTBRAK);
fprintf(fp_now,"char\t%s[%d]",symbol?symbol->cname:typname,(int)tokenval+1);
Lex_Accept(tokentype);
Lex_Accept(RIGHTBRAK);
}
else fprintf(fp_now,"char\t%s[257]",symbol?symbol->cname:typname);
return TYP(TYP_STRING);
}
unsigned short array_type(char *typname)
{
char tmp[64];
int Min[10],Max[10];
SYMENTPTR elts[10];
int dim_now=0, i;
unsigned short rtn;
strncpy(tmp,typname,63);
strlwr(tmp);
EnterMode(IN_ARRAY);
while (is(ARRAY))
{
Lex_Accept(ARRAY);
Lex_Accept(LEFTBRAK);
ordinal_type("");
Min[dim_now]=min;
Max[dim_now++] = max;
while (is(COMMA))
{
Lex_Accept(COMMA);
ordinal_type("");
Min[dim_now] = min;
Max[dim_now++] = max;
}
Lex_Accept(RIGHTBRAK);
Lex_Accept(OF);
}
ExitMode(IN_ARRAY);
rtn = type("");
Sym_InsertArray(tmp,rtn,Min,Max,dim_now);
if ((rtn & TYP_POINTER)==0) fputc('\t',fp_now);
fprintf(fp_now,symbol->cname);
for (i=0;i<dim_now;i++)
fprintf(fp_now,"[%d]",Max[i]-Min[i]+1);
return symbol->type;
}
unsigned short pointer_type(char *typname)
{
unsigned short rtn;
char *tmp;
Lex_Accept(POINTER);
if (Sym_LookUp(token))
{
rtn = TYP_POINTER | symbol->type;
tmp = symbol->cname;
}
else {
rtn = TYP_POINTER | TYP_RECORD;
tmp = token;
strlwr(token);
}
rtn = TYP(rtn);
if (Sym_Insert(typname,rtn))
fprintf(fp_now,"%s\t*%s",tmp,symbol->cname);
else fprintf(fp_now,"%s\t*",tmp);
Lex_Accept(IDENT);
return rtn;
}
unsigned short file_type(char *typname)
{
char *tmp;
Lex_Accept(_FILE);
if (Sym_Insert(typname,TYP(TYP_FILE)))
tmp = symbol->cname;
else tmp="";
fprintf(fp_now,"/* %s : file of ",tmp);
if (is(OF))
{
Lex_Accept(OF);
type("");
}
fprintf(fp_now," */");
Indent();
fprintf(fp_now,"FILE\t*%s",tmp);
return TYP(TYP_FILE);
}
unsigned short set_type(char *typname)
{
char *tmp;
Lex_Accept(SET);
Lex_Accept(OF);
if (Sym_Insert(typname,TYP(TYP_SET)))
tmp = symbol->cname;
else tmp="";
fprintf(fp_now,"/* %s : set of ",tmp);
ordinal_type("");
fprintf(fp_now," */");
Indent();
fprintf(fp_now,"SET\t%s",tmp);
return TYP(TYP_SET);
}
int variant_level=0;
void fixed_part(int is_generated)
{
char tmp[64], *id;
unsigned short rtn;
do {
ident_list();
Lex_Accept(COLON);
lexstate = Lex_MarkPos();
while ((id = Sym_DeQueueID())!=NULL)
{
Indent();
Lex_ResumePos(lexstate);
strncpy(tmp,id,63);
rtn = type(tmp);
Sym_MarkAsField(tmp,is_generated);
fprintf(fp_now,";");
}
_Free("fixed_part",lexstate);
if (!is(SEMICOLON)) break;
Lex_Accept(SEMICOLON);
if (!is(IDENT)) break;
} while (1);
}
void variant(char *uname)
{
char *vc;
Indent();
fprintf(fp_now,"/* ");
vc=var_constant();
while (is(COMMA))
{
Lex_Accept(COMMA);
fprintf(fp_now,",");
constant();
}
fprintf(fp_now,"*/");
Lex_Accept(COLON);
Lex_Accept(LEFTPAR);
if (!is(RIGHTPAR)) field_list(uname,vc,TRUE);
_Free("variant",vc);
Lex_Accept(RIGHTPAR);
}
void variant_part(void)
{
char tmp[64];
char uname[10];
Lex_Accept(CASE);
strncpy(tmp,token,63);
Lex_Accept(IDENT);
if (is(COLON))
{
Lex_Accept(COLON);
Indent();
fprintf(fp_now,"%s %s;",token,tmp);
strcpy(uname,"V_");
strncat(uname,tmp,7);
uname[9]=0;
Lex_Accept(IDENT);
}
else sprintf(uname,"V%d",variant_level++);
Lex_Accept(OF);
Indent();
fprintf(fp_now,"union {");
indentlevel++;
Indent();
variant(uname);
while (is(SEMICOLON))
{
Lex_Accept(SEMICOLON);
if (is(END)) break;
variant(uname);
}
Indent();
fprintf(fp_now,"} %s;",uname);
indentlevel--;
}
void field_list(char *prefix, char *Case, int is_generated)
{
char tmp1[80],tmp2[80];
unsigned short typ = TYP_RECORD;
if (is_generated) typ |= TYP_GENERATED;
strcpy(tmp1,prefix);
strcpy(tmp2,prefix);
if (Case != NULL)
{
strcat(tmp1,"*"); strcat(tmp2,"_");
strcat(tmp1,Case); strcat(tmp2,Case);
}
Sym_Insert(tmp1,TYP(typ));
EnterMode(IN_RECORD);
Sym_EnterRecordLevel(tmp1);
Indent();
fprintf(fp_now,"struct {");
indentlevel++;
if (!is(CASE))
{
fixed_part(is_generated);
if (is(SEMICOLON)) Lex_Accept(SEMICOLON);
}
if (is(CASE)) variant_part();
if (is(SEMICOLON)) Lex_Accept(SEMICOLON);
Indent();
fprintf(fp_now,"} %s%c",tmp2,is_generated?';':' ');
indentlevel--;
Sym_ExitRecordLevel(tmp1,is_generated);
}
unsigned short record_type(char *typname)
{
char tmp[64];
strncpy(tmp,typname,63);
Lex_Accept(RECORD);
if (!is(END)) field_list(tmp,NULL,FALSE);
Lex_Accept(END);
ExitMode(IN_RECORD);
return TYP(TYP_RECORD);
}
unsigned short type(char *typname)
{
unsigned short typ;
switch(tokentype)
{
case FUNCTION: EnterMode(IN_FUNCTYPE);
function_heading();
ExitMode(IN_FUNCTYPE);
typ = TYP_POINTER|TYP_FUNCTION;
break;
case PROCEDURE: EnterMode(IN_FUNCTYPE);
procedure_heading();
ExitMode(IN_FUNCTYPE);
typ = TYP_POINTER|TYP_PROCEDURE;
break;
case LEFTPAR: typ = ordinal_type(typname); break;
case ARRAY: typ = array_type(typname); break;
case RECORD: typ = record_type(typname); break;
case STRING: typ = string_type(typname); break;
case SET: typ = set_type(typname); break;
case _FILE: typ = file_type(typname); break;
case POINTER: typ = pointer_type(typname); break;
case MINUS:
case PLUS:
case NUMBER: typ = ordinal_type(typname); break;
case IDENT: Sym_LookUp(token);
if (symbol->type & TYP_TYPEDEF)
{
char *tmp = symbol->cname;
SYMTABPTR *tabtmp=NULL;
if ((symbol->type & TYP_RECORD)==TYP_RECORD)
tabtmp = symbol->aux.fieldtable;
if (Sym_Insert(typname,typ=TYP(symbol->type)))
{
fprintf(fp_now,"%s\t%s",tmp,symbol->cname);
if (tabtmp)
{
symbol->type |= TYP_SHAREFIELDS;
symbol->aux.fieldtable = tabtmp;
}
}
else fprintf(fp_now,"%s\t",tmp);
Lex_Accept(IDENT);
}
else typ=ordinal_type(typname);
break;
}
return typ;
}
void type_decl(void)
{
Sym_QueueID(token);
Lex_Accept(IDENT);
Lex_Accept(EQUAL);
Indent();
fprintf(fp_now,"typedef\t");
(void)type(Sym_DeQueueID());
Lex_Accept(SEMICOLON);
}
void type_decl_part(void)
{
fprintf(fp_now,"\n/*********************/\n/* Type Declarations */\n/*********************/\n");
EnterMode(IN_TYPEDEF);
Lex_Accept(TYPE);
type_decl();
while (is(IDENT))
{
fprintf(fp_now,";");
type_decl();
}
fprintf(fp_now,";\n\n");
ExitMode(IN_TYPEDEF);
}
/*************************/
/* Variable declarations */
/*************************/
void absolute_clause(void)
{
Lex_Accept(ABSOLUTE);
fprintf(errfile,"Absolute variable declared on line %d\n",linenum);
if (is(IDENT)) Lex_Accept(IDENT);
else {
Lex_Accept(NUMBER);
Lex_Accept(COLON);
Lex_Accept(NUMBER);
}
}
void variable_decl(void)
{
char tmp[80],*id;
ident_list();
Lex_Accept(COLON);
lexstate = Lex_MarkPos();
while ((id = Sym_DeQueueID())!=NULL)
{
Indent();
if (fp_now==hfile) fprintf(fp_now,"extern ");
Lex_ResumePos(lexstate);
strcpy(tmp,id);
type(tmp);
if (is(ABSOLUTE)) absolute_clause();
fprintf(fp_now,";");
}
_Free("variable_decl",lexstate);
Lex_Accept(SEMICOLON);
}
void variable_decl_part(void)
{
Lex_Accept(VAR);
while (is(IDENT)) variable_decl();
}
/***************/
/* Expressions */
/***************/
SYMENTPTR var_symbol;
char *var_reference(void)
{
char var[64];
char *line=NULL;
char scratch[8];
SYMENTPTR sym;
strncpy(var,token,63);
sym = Sym_LookUpVar(token);
if (sym->type & TYP_FUNCTION)
{
if (strcmp(token,modulenow))
{
line = append(line,TRUE,"*(",FALSE);
line = append(line,TRUE,function_call(),TRUE);
line = append(line,TRUE,")",FALSE);
Lex_Accept(POINTER);
}
else {
line = append(line,TRUE,token,FALSE);
line = append(line,TRUE,"_rtn",FALSE);
Lex_Accept(IDENT);
}
}
else if (sym->type & TYP_TYPEDEF)
{
line = append(line,TRUE,"(",FALSE);
line = append(line,TRUE,sym->cname,FALSE);
line = append(line,TRUE,")",FALSE);
Lex_Accept(IDENT);
Lex_Accept(LEFTPAR);
line = append(line,TRUE,var_reference(),TRUE);
Lex_Accept(RIGHTPAR);
}
else {
if (withsearchlevel>=0)
{
line = append(line,TRUE,Withs[withsearchlevel].prefix,FALSE);
line = append(line,TRUE,".",FALSE);
line = append(line,TRUE,sym->cname,FALSE);
}
else line = append(line,TRUE,sym->cname,FALSE);
Lex_Accept(IDENT);
}
while (is(LEFTBRAK) || is(POINTER) || is(PERIOD))
{
switch(tokentype)
{
case LEFTBRAK: fprintf(errfile,"Array reference %s not normalised on line %d\n",sym->cname,linenum);
Lex_Accept(LEFTBRAK);
line = append(line,TRUE,"[",FALSE);
line = append(line,TRUE,expression(),TRUE);
while (is(COMMA))
{
line = append(line,TRUE,"][",FALSE);
Lex_Accept(COMMA);
line = append(line,TRUE,expression(),TRUE);
}
Lex_Accept(RIGHTBRAK);
line = append(line,TRUE,"]",FALSE);
break;
case POINTER: line = append("(*(",FALSE,line,TRUE);
line = append(line,TRUE,"))",FALSE);
Lex_Accept(POINTER);
break;
case PERIOD: Lex_Accept(PERIOD);
line = append(line,TRUE,".",FALSE);
/**** if ((sym->type & 31)==TYP_RECORD)
sym=Sym_LookUpField(sym,token);
else sym = NULL;
if (sym) line = append(line,TRUE,sym->cname,FALSE);
else {***/
strlwr(token);
line = append(line,TRUE,token,FALSE);
fprintf(errfile,"Field %s not found in symbol table on line %d\n",token,linenum);
/*** }***/
Lex_Accept(IDENT);
break;
}
}
var_symbol = sym;
return line;
}
char *function_call(void) /* NB must set exprtyp to the function return typ */
{
char *line=NULL;
Sym_LookUp(token);
exprtype = symbol->type & TYP_NOFUNCTION;
line = append(line,TRUE,symbol->cname,FALSE);
line = append(line,TRUE,"(",FALSE);
Lex_Accept(IDENT);
if (is(LEFTPAR))
{
Lex_Accept(LEFTPAR);
line = append(line,TRUE,expression(),TRUE);
while (is(COMMA))
{
Lex_Accept(COMMA);
line = append(line,TRUE,",",FALSE);
line = append(line,TRUE,expression(),TRUE);
}
Lex_Accept(RIGHTPAR);
}
line = append(line,TRUE,")",FALSE);
return line;
}
char *factor(void)
{
char *line=NULL;
long val;
unsigned short typ;
int op;
switch(tokentype)
{
case LEFTPAR: Lex_Accept(LEFTPAR);