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%{
/*********************************************************************
* Copyright 1993, UCAR/Unidata
* See netcdf/COPYRIGHT file for copying and redistribution conditions.
* $Id: ncgenyy.l,v 1.3 2005-06-22 21:02:11 bert Exp $
*********************************************************************/
/* lex specification for tokens for ncgen */
/* Fill value used by ncdump from version 2.4 and later. Should match
definition of FILL_STRING in ../ncdump/vardata.h */
#define FILL_STRING "_"
#define XDR_INT_MIN (-2147483647-1)
#define XDR_INT_MAX 2147483647
char errstr[100]; /* for short error messages */
#include <string.h>
#include <ctype.h>
#include <minc.h>
#include "ncgen.h"
#include "genlib.h"
#include "ncgentab.h"
extern int int_val;
extern float float_val;
#if !defined (YYSTYPE) && !defined(YYSTYPE_IS_DECLARED)
extern void * yylval;
#define YYLVAL_NULL ((void *) NULL)
#else
#define YYLVAL_NULL ((YYSTYPE) NULL)
#endif /* YYSTYPE defined */
extern int lineno;
extern signed char byte_val;
extern short short_val;
extern double double_val;
extern char *netcdfname;
extern char termstring[];
#define YY_BREAK /* defining as nothing eliminates unreachable
statement warnings from flex output,
but make sure every action ends with
"return" or "break"! */
%}
%p 6000
escaped \\.
nonquotes ([^"\\]|{escaped})*
exp ([eE][+-]?[0-9]+)
%%
\/\/.* { /* comment */
break;
}
\"{nonquotes}\" {
if(yyleng > MAXTRST) {
yyerror("string too long, truncated\n");
yytext[MAXTRST-1] = '\0';
}
expand_escapes(termstring,(char *)yytext,yyleng);
return (TERMSTRING);
}
float|FLOAT|real|REAL {return (FLOAT_K);}
char|CHAR {return (CHAR_K);}
byte|BYTE {return (BYTE_K);}
short|SHORT {return (SHORT_K);}
long|LONG|int|INT|integer|INTEGER {return (INT_K);}
double|DOUBLE {return (DOUBLE_K);}
unlimited|UNLIMITED {int_val = -1;
return (NC_UNLIMITED_K);}
dimensions:|DIMENSIONS: {return (DIMENSIONS);}
variables:|VARIABLES: {return (VARIABLES);}
data:|DATA: {return (DATA);}
(netcdf|NETCDF|netCDF)[ \t]+[^\{]+ {
char *s = (char*)yytext+strlen("netcdf");
char *t = (char*)yytext+yyleng-1;
while (isspace(*s))
s++;
while (isspace(*t))
t--;
t++;
if (t-s+1 < 1) {
yyerror("netCDF name required");
return (DATA); /* generate syntax error */
}
netcdfname = (char *) emalloc(t-s+1);
(void) strncpy(netcdfname, s, t-s);
netcdfname[t-s] = '\0';
return (NETCDF);
}
(hdf5|HDF5)[ \t]+[^\{]+ {
char *s = (char*)yytext+strlen("hdf5");
char *t = (char*)yytext+yyleng-1;
while (isspace(*s))
s++;
while (isspace(*t))
t--;
t++;
if (t-s+1 < 1) {
yyerror("HDF5 name required");
return (DATA); /* generate syntax error */
}
netcdfname = (char *) emalloc(t-s+1);
(void) strncpy(netcdfname, s, t-s);
netcdfname[t-s] = '\0';
return (HDF5);
}
DoubleInf|NaN|-?Infinity { /* missing value (pre-2.4 backward compatibility) */
if (yytext[0] == '-') {
double_val = -NC_FILL_DOUBLE;
} else {
double_val = NC_FILL_DOUBLE;
}
return (DOUBLE_CONST);
}
FloatInf|-?Inff { /* missing value (pre-2.4 backward compatibility) */
if (yytext[0] == '-') {
float_val = -NC_FILL_FLOAT;
} else {
float_val = NC_FILL_FLOAT;
}
return (FLOAT_CONST);
}
[A-Za-z_][A-Z.@#\[\]a-z_0-9-]* {
if (STREQ((char *)yytext, FILL_STRING))
return (FILLVALUE);
if ((yylval = lookup((char *)yytext)) == YYLVAL_NULL) {
yylval = install((char *)yytext);
}
return (IDENT);
}
\n {
lineno++ ;
break;
}
[+-]?[0-9]*[0-9][Bb] {
int ii;
if (sscanf((char*)yytext, "%d", &ii) != 1) {
sprintf(errstr,"bad byte constant: %s",(char*)yytext);
yyerror(errstr);
}
byte_val = ii;
if (ii != (int)byte_val) {
sprintf(errstr,"byte constant out of range (-128,127): %s",(char*)yytext);
yyerror(errstr);
}
return (BYTE_CONST);
}
[+-]?[0-9]*\.[0-9]*{exp}?[LlDd]?|[+-]?[0-9]*{exp}[LlDd]? {
if (sscanf((char*)yytext, "%le", &double_val) != 1) {
sprintf(errstr,"bad long or double constant: %s",(char*)yytext);
yyerror(errstr);
}
return (DOUBLE_CONST);
}
[+-]?[0-9]*\.[0-9]*{exp}?[Ff]|[+-]?[0-9]*{exp}[Ff] {
if (sscanf((char*)yytext, "%e", &float_val) != 1) {
sprintf(errstr,"bad float constant: %s",(char*)yytext);
yyerror(errstr);
}
return (FLOAT_CONST);
}
[+-]?[0-9]+[sS]|0[xX][0-9a-fA-F]+[sS] {
if (sscanf((char*)yytext, "%hd", &short_val) != 1) {
sprintf(errstr,"bad short constant: %s",(char*)yytext);
yyerror(errstr);
}
return (SHORT_CONST);
}
[+-]?([1-9][0-9]*|0)[lL]? {
char *ptr;
errno = 0;
double_val = strtod((char*)yytext, &ptr);
if (errno != 0 && double_val == 0.0) {
sprintf(errstr,"bad numerical constant: %s",(char*)yytext);
yyerror(errstr);
}
if (double_val < XDR_INT_MIN ||double_val > XDR_INT_MAX) {
return DOUBLE_CONST;
} else {
int_val = (int) double_val;
return INT_CONST;
}
}
0[xX]?[0-9a-fA-F]+[lL]? {
char *ptr;
long long_val;
errno = 0;
long_val = strtol((char*)yytext, &ptr, 0);
if (errno != 0) {
sprintf(errstr,"bad long constant: %s",(char*)yytext);
yyerror(errstr);
}
if (long_val < XDR_INT_MIN || long_val > XDR_INT_MAX) {
double_val = (double) long_val;
return DOUBLE_CONST;
} else {
int_val = (int) long_val;
return INT_CONST;
}
}
\'[^\\]\' {
(void) sscanf((char*)&yytext[1],"%c",&byte_val);
return (BYTE_CONST);
}
\'\\[0-7][0-7]?[0-7]?\' {
byte_val = (char) strtol((char*)&yytext[2], (char **) 0, 8);
return (BYTE_CONST);
}
\'\\[xX][0-9a-fA-F][0-9a-fA-F]?\' {
byte_val = (char) strtol((char*)&yytext[3], (char **) 0, 16);
return (BYTE_CONST);
}
\'\\.\' {
switch ((char)yytext[2]) {
case 'a': byte_val = '\007'; break; /* not everyone under-
* stands '\a' yet */
case 'b': byte_val = '\b'; break;
case 'f': byte_val = '\f'; break;
case 'n': byte_val = '\n'; break;
case 'r': byte_val = '\r'; break;
case 't': byte_val = '\t'; break;
case 'v': byte_val = '\v'; break;
case '\\': byte_val = '\\'; break;
case '?': byte_val = '\177'; break;
case '\'': byte_val = '\''; break;
default: byte_val = (char)yytext[2];
}
return (BYTE_CONST);
}
[ \t\f]+ { /* whitespace */
break;
}
. return (yytext[0]) ;
|
