mirror of
https://github.com/Unidata/netcdf-c.git
synced 2024-12-09 08:11:38 +08:00
99fccab359
2. Fixed plugin building (nc_test4/hdf5plugins) to be done properly by cmake and automake. 4. Duplicated part of the nc_test4 filter test code in examples/C An incomplete and untested set of hooks exist for OS-X in nc_test4/findplugins.in. They need testing.
870 lines
24 KiB
Plaintext
870 lines
24 KiB
Plaintext
%{
|
|
/*********************************************************************
|
|
* Copyright 1993, UCAR/Unidata
|
|
* See netcdf/COPYRIGHT file for copying and redistribution conditions.
|
|
* $Id: ncgen.l,v 1.24 2009/09/25 18:22:35 dmh Exp $
|
|
*********************************************************************/
|
|
|
|
/* Problems:
|
|
1. We assume the input is true utf8.
|
|
Unfortunately, we may actually get iso-latin-8859-1.
|
|
This means that there will be ambiguity about the characters
|
|
in the range 128-255 because they will look like n-byte unicode
|
|
when they are 1-byte 8859 characters. Because of our encoding,
|
|
8859 characters above 128 will be handles as n-byte utf8 and so
|
|
will probably not lex correctly.
|
|
Solution: assume utf8 and note in the documentation that
|
|
ISO8859 is specifically unsupported.
|
|
2. The netcdf function NC_check_name in string.c must be modified to
|
|
conform to the use of UTF8.
|
|
3. We actually have three tests for UTF8 of increasing correctness
|
|
(in the sense that the least correct will allow some sequences that
|
|
are technically illegal UTF8).
|
|
The tests are derived from the table at
|
|
http://www.w3.org/2005/03/23-lex-U
|
|
We include lexical definitions for all three, but use the second version.
|
|
4. Single character constants enclosed in '...' cannot be
|
|
utf-8, so we assume they are by default encoded using the 1-byte
|
|
subset of utf-8. It turns out that this subset is in fact
|
|
equivalent to US-Ascii (7-bit).
|
|
We could use ISO-8859-1, but that conflicts with UTF-8 above value 127.
|
|
*/
|
|
|
|
/* 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 */
|
|
|
|
#include "ncgen.h"
|
|
#include "ncgeny.h"
|
|
|
|
#define FILL_STRING "_"
|
|
#define XDR_INT32_MIN (-2147483647-1)
|
|
#define XDR_INT32_MAX 2147483647
|
|
#define XDR_INT64_MIN (-9223372036854775807LL-1)
|
|
#define XDR_INT64_MAX (9223372036854775807LL)
|
|
|
|
#undef DEBUG
|
|
#ifdef DEBUG
|
|
static int MIN_BYTE = NC_MIN_BYTE;
|
|
static int MIN_SHORT = NC_MIN_SHORT;
|
|
static int MIN_INT = NC_MIN_INT;
|
|
static int MAX_BYTE = NC_MAX_BYTE;
|
|
static int MAX_SHORT = NC_MAX_SHORT;
|
|
static int MAX_INT = NC_MAX_INT;
|
|
static int MAX_UBYTE = NC_MAX_UBYTE;
|
|
static int MAX_USHORT = NC_MAX_USHORT;
|
|
static unsigned int MAX_UINT = NC_MAX_UINT;
|
|
|
|
#undef NC_MIN_BYTE
|
|
#undef NC_MIN_SHORT
|
|
#undef NC_MIN_INT
|
|
#undef NC_MAX_BYTE
|
|
#undef NC_MAX_SHORT
|
|
#undef NC_MAX_INT
|
|
#undef NC_MAX_UBYTE
|
|
#undef NC_MAX_USHORT
|
|
#undef NC_MAX_UINT
|
|
|
|
#define NC_MIN_BYTE MIN_BYTE
|
|
#define NC_MIN_SHORT MIN_SHORT
|
|
#define NC_MIN_INT MIN_INT
|
|
#define NC_MAX_BYTE MAX_BYTE
|
|
#define NC_MAX_SHORT MAX_SHORT
|
|
#define NC_MAX_INT MAX_INT
|
|
#define NC_MAX_UBYTE MAX_UBYTE
|
|
#define NC_MAX_USHORT MAX_USHORT
|
|
#define NC_MAX_UINT MAX_UINT
|
|
#endif
|
|
|
|
#define TAGCHARS "BbSsLlUu"
|
|
|
|
#define tstdecimal(ch) ((ch) >= '0' && (ch) <= '9')
|
|
|
|
/*Mnemonics*/
|
|
#define ISIDENT 1
|
|
|
|
/* Define a fake constant indicating that
|
|
no tag was specified */
|
|
#define NC_NOTAG (-1)
|
|
|
|
char errstr[100]; /* for short error messages */
|
|
|
|
int lineno; /* line number for error messages */
|
|
Bytebuffer* lextext; /* name or string with escapes removed */
|
|
|
|
#define YY_BREAK /* defining as nothing eliminates unreachable
|
|
statement warnings from flex output,
|
|
but make sure every action ends with
|
|
"return" or "break"! */
|
|
|
|
int specialconstants; /* 1 if nan, nanf, infinity, etc is used */
|
|
double double_val; /* last double value read */
|
|
float float_val; /* last float value read */
|
|
long long int64_val; /* last int64 value read */
|
|
int int32_val; /* last int32 value read */
|
|
short int16_val; /* last short value read */
|
|
unsigned long long uint64_val; /* last int64 value read */
|
|
unsigned int uint32_val; /* last int32 value read */
|
|
unsigned short uint16_val; /* last short value read */
|
|
char char_val; /* last char value read */
|
|
signed char byte_val; /* last byte value read */
|
|
unsigned char ubyte_val; /* last byte value read */
|
|
|
|
static Symbol* makepath(char* text);
|
|
static int lexdebug(int);
|
|
static unsigned long long parseULL(char* text, int*);
|
|
static nc_type downconvert(unsigned long long uint64, int*, int, int);
|
|
static int tagmatch(nc_type nct, int tag);
|
|
static int nct2lexeme(nc_type nct);
|
|
static int collecttag(char* text, char** stagp);
|
|
|
|
struct Specialtoken specials[] = {
|
|
{"_FillValue",_FILLVALUE,_FILLVALUE_FLAG},
|
|
{"_Format",_FORMAT,_FORMAT_FLAG},
|
|
{"_Storage",_STORAGE,_STORAGE_FLAG},
|
|
{"_ChunkSizes",_CHUNKSIZES,_CHUNKSIZES_FLAG},
|
|
{"_Fletcher32",_FLETCHER32,_FLETCHER32_FLAG},
|
|
{"_DeflateLevel",_DEFLATELEVEL,_DEFLATE_FLAG},
|
|
{"_Shuffle",_SHUFFLE,_SHUFFLE_FLAG},
|
|
{"_Endianness",_ENDIANNESS,_ENDIAN_FLAG},
|
|
{"_NoFill",_NOFILL,_NOFILL_FLAG},
|
|
{"_NCProperties",_NCPROPS,_NCPROPS_FLAG},
|
|
{"_IsNetcdf4",_ISNETCDF4,_ISNETCDF4_FLAG},
|
|
{"_SuperblockVersion",_SUPERBLOCK,_SUPERBLOCK_FLAG},
|
|
{"_Filter",_FILTER,_FILTER_FLAG},
|
|
{NULL,0} /* null terminate */
|
|
};
|
|
|
|
%}
|
|
%x ST_C_COMMENT
|
|
%x TEXT
|
|
%p 6000
|
|
|
|
/* The most correct (validating) version of UTF8 character set
|
|
(Taken from: http://www.w3.org/2005/03/23-lex-U)
|
|
|
|
The lines of the expression cover the UTF8 characters as follows:
|
|
1. non-overlong 2-byte
|
|
2. excluding overlongs
|
|
3. straight 3-byte
|
|
4. excluding surrogates
|
|
5. straight 3-byte
|
|
6. planes 1-3
|
|
7. planes 4-15
|
|
8. plane 16
|
|
|
|
UTF8 ([\xC2-\xDF][\x80-\xBF]) \
|
|
| (\xE0[\xA0-\xBF][\x80-\xBF]) \
|
|
| ([\xE1-\xEC][\x80-\xBF][\x80-\xBF]) \
|
|
| (\xED[\x80-\x9F][\x80-\xBF]) \
|
|
| ([\xEE-\xEF][\x80-\xBF][\x80-\xBF]) \
|
|
| (\xF0[\x90-\xBF][\x80-\xBF][\x80-\xBF]) \
|
|
| ([\xF1-\xF3][\x80-\xBF][\x80-\xBF][\x80-\xBF]) \
|
|
| (\xF4[\x80-\x8F][\x80-\xBF][\x80-\xBF]) \
|
|
|
|
*/
|
|
|
|
/* Wish there was some way to ifdef lex files */
|
|
|
|
/*The most relaxed version of UTF8 (not used)
|
|
UTF8 ([\xC0-\xD6].)|([\xE0-\xEF]..)|([\xF0-\xF7]...)
|
|
*/
|
|
|
|
/*The partially relaxed version of UTF8, and the one used here */
|
|
UTF8 ([\xC0-\xD6][\x80-\xBF])|([\xE0-\xEF][\x80-\xBF][\x80-\xBF])|([\xF0-\xF7][\x80-\xBF][\x80-\xBF][\x80-\xBF])
|
|
|
|
/* The old definition of ID
|
|
ID ([A-Za-z_]|{UTF8})([A-Z.@#\[\]a-z_0-9+-]|{UTF8})*
|
|
*/
|
|
|
|
/* Don't permit control characters or '/' in names, but other special
|
|
chars OK if escaped. Note that to preserve backwards
|
|
compatibility, none of the characters _.@+- should be escaped, as
|
|
they were previously permitted in names without escaping. */
|
|
|
|
idescaped \\[ !"#$%&'()*,:;<=>?\[\\\]^`{|}~]
|
|
numescaped \\[0-9]
|
|
|
|
/* New definition to conform to a subset of string.c */
|
|
ID ([a-zA-Z_]|{UTF8}|{numescaped})([a-zA-Z0-9_.@+-]|{UTF8}|{idescaped})*
|
|
|
|
escaped \\.
|
|
|
|
/* Capture a datasetidentifier */
|
|
/* DATASETID ([a-zA-Z0-9!#$%&*:;<=>?/^|~_.@+-]|{UTF8})* */
|
|
DATASETID [^{][^{]*
|
|
|
|
|
|
/* Note: this definition of string will work for utf8 as well,
|
|
although it is a very relaxed definition
|
|
*/
|
|
nonquotes ([^"\\]|{escaped})*
|
|
exp ([eE][+-]?[0-9]+)
|
|
|
|
OPAQUESTRING (0[xX][0-9A-Fa-f][0-9A-Fa-f]*)
|
|
|
|
PATH ([/]|([/]{ID})([/]{ID})*)
|
|
|
|
XUNUMBER {OPAQUESTRING}([Ss]|[Ll]|[Ll][Ll])?
|
|
NUMBER [+-]?[0-9][0-9]*[Uu]?([BbSs]|[Ll]|[Ll][Ll])?
|
|
DBLNUMBER [+-]?[0-9]*\.[0-9]*{exp}?[LlDd]?|[+-]?[0-9]*{exp}[LlDd]?
|
|
FLTNUMBER [+-]?[0-9]*\.[0-9]*{exp}?[Ff]|[+-]?[0-9]*{exp}[Ff]
|
|
|
|
SPECIAL "_FillValue"|"_Format"|"_Storage"|"_ChunkSizes"|"_Fletcher32"|"_DeflateLevel"|"_Shuffle"|"_Endianness"|"_NoFill"|"_NCProperties"|"_IsNetcdf4"|"_SuperblockVersion"|"_Filter"
|
|
|
|
USASCII [\x01-\x7F]
|
|
|
|
%%
|
|
[ \r\t\f]+ { /* whitespace */
|
|
break;
|
|
}
|
|
|
|
\/\/.* { /* comment */
|
|
break;
|
|
}
|
|
|
|
\"{nonquotes}\" {int len;
|
|
/* In netcdf4, this will be used in a variety
|
|
of places, so only remove escapes */
|
|
/*
|
|
if(yyleng > MAXTRST) {
|
|
yyerror("string too long, truncated\n");
|
|
yytext[MAXTRST-1] = '\0';
|
|
}
|
|
*/
|
|
/* FIX: Assumes unescape also does normalization */
|
|
bbSetalloc(lextext,yyleng+1); /*+1 for nul */
|
|
/* Adjust length */
|
|
bbSetlength(lextext,yyleng-2); /*-2 for quotes */
|
|
len = unescape(bbContents(lextext),
|
|
(char *)yytext+1,yyleng-2,!ISIDENT);
|
|
if(len < 0) {
|
|
sprintf(errstr,"Illegal character: %s",yytext);
|
|
yyerror(errstr);
|
|
}
|
|
bbSetlength(lextext,len);
|
|
bbNull(lextext);
|
|
return lexdebug(TERMSTRING);
|
|
}
|
|
|
|
{OPAQUESTRING} { /* drop leading 0x; pad to even number of chars */
|
|
char* p = yytext+2;
|
|
int len = yyleng - 2;
|
|
bbClear(lextext);
|
|
bbAppendn(lextext,p,len);
|
|
if((len % 2) == 1) bbAppend(lextext,'0');
|
|
bbNull(lextext);
|
|
/* convert all chars to lower case */
|
|
for(p=bbContents(lextext);(int)*p;p++) *p = tolower(*p);
|
|
return lexdebug(OPAQUESTRING);
|
|
}
|
|
|
|
compound|struct|structure {return lexdebug(COMPOUND);}
|
|
enum {return lexdebug(ENUM);}
|
|
opaque {return lexdebug(OPAQUE_);}
|
|
|
|
float|real {return lexdebug(FLOAT_K);}
|
|
char {return lexdebug(CHAR_K);}
|
|
byte {return lexdebug(BYTE_K);}
|
|
ubyte {return lexdebug(UBYTE_K);}
|
|
short {return lexdebug(SHORT_K);}
|
|
ushort {return lexdebug(USHORT_K);}
|
|
long|int|integer {return lexdebug(INT_K);}
|
|
ulong|uint|uinteger {return lexdebug(UINT_K);}
|
|
int64 {return lexdebug(INT64_K);}
|
|
uint64 {return lexdebug(UINT64_K);}
|
|
double {return lexdebug(DOUBLE_K);}
|
|
string {return lexdebug(STRING_K);}
|
|
|
|
unlimited|UNLIMITED {int32_val = -1;
|
|
return lexdebug(NC_UNLIMITED_K);}
|
|
|
|
types: {return lexdebug(TYPES);}
|
|
dimensions: {return lexdebug(DIMENSIONS);}
|
|
variables: {return lexdebug(VARIABLES);}
|
|
data: {return lexdebug(DATA);}
|
|
group: {return lexdebug(GROUP);}
|
|
|
|
(netcdf|NETCDF|netCDF) {BEGIN(TEXT);return lexdebug(NETCDF);}
|
|
|
|
DoubleInf|-?Infinity { /* missing value (pre-2.4 backward compatibility) */
|
|
if (yytext[0] == '-') {
|
|
double_val = NEGNC_INFINITE;
|
|
} else {
|
|
double_val = NC_INFINITE;
|
|
}
|
|
specialconstants = 1;
|
|
return lexdebug(DOUBLE_CONST);
|
|
}
|
|
NaN|nan { /* missing value (pre-2.4 backward compatibility) */
|
|
double_val = NAN;
|
|
specialconstants = 1;
|
|
return lexdebug(DOUBLE_CONST);
|
|
}
|
|
|
|
FloatInf|-?Infinityf|-?Inff {/* missing value (pre-2.4 backward compatibility)*/
|
|
if (yytext[0] == '-') {
|
|
float_val = NEGNC_INFINITEF;
|
|
} else {
|
|
float_val = NC_INFINITEF;
|
|
}
|
|
specialconstants = 1;
|
|
return lexdebug(FLOAT_CONST);
|
|
}
|
|
NaNf|nanf { /* missing value (pre-2.4 backward compatibility) */
|
|
float_val = NANF;
|
|
specialconstants = 1;
|
|
return lexdebug(FLOAT_CONST);
|
|
}
|
|
|
|
NIL|nil|Nil {
|
|
#ifdef USE_NETCDF4
|
|
if(l_flag == L_C || l_flag == L_BINARY)
|
|
return lexdebug(NIL);
|
|
yyerror("NIL only allowed for netcdf-4 and for -lc or -lb");
|
|
#else
|
|
yyerror("NIL only allowed for netcdf-4 and for -lc or -lb");
|
|
#endif
|
|
}
|
|
|
|
{PATH} {
|
|
bbClear(lextext);
|
|
bbAppendn(lextext,(char*)yytext,yyleng+1); /* include null */
|
|
bbNull(lextext);
|
|
yylval.sym = makepath(bbContents(lextext));
|
|
return lexdebug(PATH);
|
|
}
|
|
|
|
|
|
{SPECIAL} {struct Specialtoken* st;
|
|
bbClear(lextext);
|
|
bbAppendn(lextext,(char*)yytext,yyleng+1); /* include null */
|
|
bbNull(lextext);
|
|
for(st=specials;st->name;st++) {
|
|
if(strcmp(bbContents(lextext),st->name)==0) {return lexdebug(st->token);}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
<TEXT>{DATASETID} {
|
|
int c;
|
|
char* p; char* q;
|
|
/* copy the trimmed name */
|
|
bbClear(lextext);
|
|
bbAppendn(lextext,(char*)yytext,yyleng+1); /* include null */
|
|
bbNull(lextext);
|
|
p = bbContents(lextext);
|
|
q = p;
|
|
while((c=*p++)) {if(c > ' ') *q++ = c;}
|
|
*q = '\0';
|
|
if(datasetname == NULL)
|
|
datasetname = bbDup(lextext);
|
|
BEGIN(INITIAL);
|
|
return lexdebug(DATASETID);
|
|
}
|
|
|
|
{ID} { char* id; int len;
|
|
bbClear(lextext);
|
|
bbAppendn(lextext,(char*)yytext,yyleng+1); /* include null */
|
|
bbNull(lextext);
|
|
id = bbContents(lextext);
|
|
len = unescape(id,id,bbLength(lextext),ISIDENT);
|
|
bbSetlength(lextext,len);
|
|
if (STREQ(id, FILL_STRING)) return lexdebug(FILLMARKER);
|
|
yylval.sym = install(id);
|
|
return lexdebug(IDENT);
|
|
}
|
|
|
|
{NUMBER} {
|
|
/*
|
|
We need to try to see what size of integer ((u)int).
|
|
Technically, the user should specify, but...
|
|
If out of any integer range, then complain
|
|
*/
|
|
int slen = strlen(ncgtext);
|
|
char* stag = NULL;
|
|
int tag = NC_NAT;
|
|
int isneg = 0;
|
|
int c = ncgtext[0];
|
|
int fail = 0;
|
|
nc_type nct = 0;
|
|
char* pos = NULL;
|
|
int hasU = 0;
|
|
|
|
/* capture the tag string */
|
|
tag = collecttag(ncgtext,&stag);
|
|
if(tag == NC_NAT) {
|
|
sprintf(errstr,"Illegal integer suffix: %s",stag);
|
|
yyerror(errstr);
|
|
goto done;
|
|
}
|
|
/* drop the tag from the input text */
|
|
ncgtext[slen - strlen(stag)] = '\0';
|
|
hasU = isuinttype(tag);
|
|
if(!tstdecimal(c)) {
|
|
pos = ncgtext+1;
|
|
isneg = (c == '-');
|
|
} else
|
|
pos = ncgtext;
|
|
if(isneg && hasU) {
|
|
sprintf(errstr,"Unsigned integer cannot be signed: %s",ncgtext);
|
|
yyerror(errstr);
|
|
goto done;
|
|
}
|
|
uint64_val = parseULL(pos,&fail);
|
|
if(fail) {
|
|
sprintf(errstr,"integer constant out of range: %s",ncgtext);
|
|
yyerror(errstr);
|
|
goto done;
|
|
}
|
|
/* Down convert to smallest possible range */
|
|
nct = downconvert(uint64_val,&tag,isneg,hasU);
|
|
switch (k_flag) {
|
|
case NC_FORMAT_64BIT_DATA:
|
|
case NC_FORMAT_NETCDF4:
|
|
return lexdebug(nct2lexeme(nct));
|
|
case NC_FORMAT_CLASSIC:
|
|
case NC_FORMAT_64BIT_OFFSET:
|
|
case NC_FORMAT_NETCDF4_CLASSIC:
|
|
if(nct > NC_INT) {
|
|
sprintf(errstr,"Illegal integer constant for classic format: %s",ncgtext);
|
|
yyerror(errstr);
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
if(!tagmatch(nct,tag)) {
|
|
semwarn(lineno,"Warning: Integer out of range for tag: %s; tag treated as changed.",ncgtext);
|
|
}
|
|
return lexdebug(nct2lexeme(nct));
|
|
done: return 0;
|
|
}
|
|
|
|
{XUNUMBER} {
|
|
int c;
|
|
int token = 0;
|
|
int slen = strlen(yytext);
|
|
char* stag = NULL;
|
|
int tag = NC_NAT;
|
|
char* hex = yytext+2; /* point to first true hex digit */
|
|
int xlen = (slen - 3); /* true hex length */
|
|
|
|
yytext[slen-1] = '\0';
|
|
/* capture the tag string */
|
|
tag = collecttag(yytext,&stag);
|
|
if(tag == NC_NAT) {
|
|
sprintf(errstr,"Illegal integer suffix: %s",stag);
|
|
yyerror(errstr);
|
|
goto done;
|
|
}
|
|
yytext[slen - strlen(stag)] = '\0';
|
|
if(xlen > 16) { /* truncate hi order digits */
|
|
hex += (xlen - 16);
|
|
}
|
|
/* convert to an unsigned long long */
|
|
uint64_val = 0;
|
|
while((c=*hex++)) {
|
|
unsigned int hexdigit = (c <= '9'?(c-'0'):(c-'a')+0xa);
|
|
uint64_val = ((uint64_val << 4) | hexdigit);
|
|
}
|
|
switch (tag) {
|
|
case NC_USHORT:
|
|
uint16_val = (unsigned short)uint64_val;
|
|
token = USHORT_CONST;
|
|
break;
|
|
case NC_UINT:
|
|
token = UINT_CONST;
|
|
break;
|
|
case NC_UINT64:
|
|
token = UINT64_CONST;
|
|
break;
|
|
default: /* should never happen */
|
|
if (sscanf((char*)yytext, "%i", &uint32_val) != 1) {
|
|
sprintf(errstr,"bad unsigned int constant: %s",(char*)yytext);
|
|
yyerror(errstr);
|
|
}
|
|
token = UINT_CONST;
|
|
}
|
|
return lexdebug(token);
|
|
}
|
|
{DBLNUMBER} {
|
|
if (sscanf((char*)yytext, "%le", &double_val) != 1) {
|
|
sprintf(errstr,"bad long or double constant: %s",(char*)yytext);
|
|
yyerror(errstr);
|
|
}
|
|
return lexdebug(DOUBLE_CONST);
|
|
}
|
|
{FLTNUMBER} {
|
|
if (sscanf((char*)yytext, "%e", &float_val) != 1) {
|
|
sprintf(errstr,"bad float constant: %s",(char*)yytext);
|
|
yyerror(errstr);
|
|
}
|
|
return lexdebug(FLOAT_CONST);
|
|
}
|
|
\'[^\\]\' {
|
|
(void) sscanf((char*)&yytext[1],"%c",&byte_val);
|
|
return lexdebug(BYTE_CONST);
|
|
}
|
|
\'\\[0-7][0-7][0-7]\' {
|
|
int oct = unescapeoct(&yytext[2]);
|
|
if(oct < 0) {
|
|
sprintf(errstr,"bad octal character constant: %s",(char*)yytext);
|
|
yyerror(errstr);
|
|
}
|
|
byte_val = (unsigned int)oct;
|
|
return lexdebug(BYTE_CONST);
|
|
}
|
|
\'\\[xX][0-9a-fA-F][0-9a-fA-F]\' {
|
|
int hex = unescapehex(&yytext[3]);
|
|
if(byte_val < 0) {
|
|
sprintf(errstr,"bad hex character constant: %s",(char*)yytext);
|
|
yyerror(errstr);
|
|
}
|
|
byte_val = (unsigned int)hex;
|
|
return lexdebug(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 lexdebug(BYTE_CONST);
|
|
}
|
|
|
|
\n {
|
|
lineno++ ;
|
|
break;
|
|
}
|
|
|
|
"/""*" {/*initial*/
|
|
BEGIN(ST_C_COMMENT);
|
|
break;
|
|
}
|
|
|
|
<ST_C_COMMENT>([^*]|"*"[^/])* {/* continuation */
|
|
break;
|
|
}
|
|
|
|
<ST_C_COMMENT>"*/" {/* final */
|
|
BEGIN(INITIAL);
|
|
break;
|
|
}
|
|
|
|
<ST_C_COMMENT><<EOF>> {/* final, error */
|
|
fprintf(stderr,"unterminated /**/ comment");
|
|
BEGIN(INITIAL);
|
|
break;
|
|
}
|
|
|
|
. {/* Note: this next rule will not work for UTF8 characters */
|
|
return lexdebug(yytext[0]) ;
|
|
}
|
|
%%
|
|
static int
|
|
lexdebug(int token)
|
|
{
|
|
if(debug >= 2)
|
|
{
|
|
char* text = yytext;
|
|
text[yyleng] = 0;
|
|
fprintf(stderr,"Token=%d |%s| line=%d\n",token,text,lineno);
|
|
}
|
|
return token;
|
|
}
|
|
|
|
int
|
|
lex_init(void)
|
|
{
|
|
lineno = 1;
|
|
lextext = bbNew();
|
|
if(0) unput(0); /* keep -Wall quiet */
|
|
return 0;
|
|
}
|
|
|
|
static Symbol*
|
|
makepath(char* text0)
|
|
{
|
|
/* Create a reference symbol.
|
|
Convert path to a sequence of symbols.
|
|
Use last name as symbol name (with root group reference ('/') as exception).
|
|
*/
|
|
Symbol* refsym = NULL;
|
|
/* walk the path converting to a sequence of symbols */
|
|
if(strcmp(text0,"/")==0) {
|
|
/* special case of root reference */
|
|
refsym = rootgroup;
|
|
} else {
|
|
List* prefix = listnew();
|
|
/* split the text into IDENT chunks, convert to symbols */
|
|
Symbol* container = rootgroup;
|
|
char *ident, *p;
|
|
char* text = strdup(text0);
|
|
int c,lastident;
|
|
ident=text+1; p=ident; /* skip leading '/' */
|
|
do {
|
|
lastident = 0;
|
|
switch ((c=*p)) {
|
|
default: p++; break;
|
|
case '\\': p++; if(*p == '/') p++; break;
|
|
case '\0': /* treat null terminator like trailing '/' (mostly) */
|
|
lastident=1; /* this is the last ident in the path */
|
|
/*fall thru */
|
|
case '/':
|
|
*p='\0';
|
|
if(!lastident) {
|
|
unescape(ident,ident,strlen(ident),ISIDENT);
|
|
refsym = lookupingroup(NC_GRP,ident,container);
|
|
if(refsym == NULL) {
|
|
sprintf(errstr,"Undefined or forward referenced group: %s",ident);
|
|
yyerror(errstr);
|
|
refsym = rootgroup;
|
|
} else {
|
|
listpush(prefix,(void*)refsym);
|
|
}
|
|
} else { /* lastident is true */
|
|
unescape(ident,ident,strlen(ident),ISIDENT);
|
|
refsym = install(ident);
|
|
refsym->objectclass = NC_GRP;/* tentative */
|
|
refsym->ref.is_ref = 1;
|
|
refsym->container = container;
|
|
refsym->subnodes = listnew();
|
|
}
|
|
container = refsym;
|
|
ident=p+1; p=ident;
|
|
break;
|
|
}
|
|
} while(c != '\0');
|
|
refsym->prefix = prefix;
|
|
free(text);
|
|
}
|
|
return refsym;
|
|
}
|
|
|
|
/*
|
|
Parse a simple string of digits into an unsigned long long
|
|
Return the value.
|
|
*/
|
|
static unsigned long long
|
|
parseULL(char* text, int* failp)
|
|
{
|
|
extern int errno;
|
|
char* endptr;
|
|
unsigned long long uint64 = 0;
|
|
|
|
errno = 0; endptr = NULL;
|
|
assert(tstdecimal(text[0]));
|
|
#ifdef HAVE_STRTOULL
|
|
uint64 = strtoull(text,&endptr,10);
|
|
if(errno == ERANGE) {
|
|
if(failp) *failp = ERANGE;
|
|
return 0;
|
|
}
|
|
#else /*!(defined HAVE_STRTOLL && defined HAVE_STRTOULL)*/
|
|
sscanf((char*)text, "%llu", &uint64);
|
|
/* Have no useful way to detect out of range */
|
|
#endif /*!(defined HAVE_STRTOLL && defined HAVE_STRTOULL)*/
|
|
return uint64;
|
|
}
|
|
|
|
|
|
/**
|
|
Given the raw bits, the sign char, the tag, and hasU
|
|
fill in the appropriate *_val field
|
|
and return the type.
|
|
Note that we cannot return unsigned types if running pure netcdf classic.
|
|
The rule is to pick the smallest enclosing type.
|
|
|
|
The rule used here is that the tag (the suffix, if any)
|
|
always takes precedence and the value is modified to conform
|
|
if possible, otherwise out-of-range is signalled.
|
|
For historical reasons (ncgen3), values that fit as unsigned
|
|
are acceptable for the signed tag and conversion is attempted;
|
|
e.g. 65535s; is legal and is return as a negative short.
|
|
*/
|
|
static nc_type
|
|
downconvert(unsigned long long uint64, int* tagp, int isneg, int hasU)
|
|
{
|
|
nc_type nct = NC_NAT;
|
|
int tag = *tagp;
|
|
int bit63set = (uint64 >> 63);
|
|
long long int64 = *((long long*)&uint64);
|
|
|
|
if(isneg && hasU) {
|
|
return (*tagp = NC_NAT);
|
|
}
|
|
/* To simplify the code, we look for special case of NC_UINT64
|
|
constants that will not fit into an NC_INT64 constant.
|
|
*/
|
|
if(tag == NC_UINT64 && bit63set) {
|
|
uint64_val = uint64;
|
|
return tag;
|
|
}
|
|
/* At this point we need deal only with int64 value */
|
|
/* Apply the isneg */
|
|
if(isneg)
|
|
int64 = - int64;
|
|
|
|
if(tag == NC_NOTAG) {
|
|
/* If we have no other info, then assume NC_(U)INT(64) */
|
|
if(int64 >= NC_MIN_INT && int64 <= NC_MAX_INT) {
|
|
nct = (tag = NC_INT);
|
|
int32_val = (signed int)int64;
|
|
} else if(int64 >= 0 && int64 <= NC_MAX_UINT) {
|
|
nct = (tag = NC_UINT);
|
|
uint32_val = (unsigned int)int64;
|
|
} else if(int64 < 0) {
|
|
nct = (tag = NC_INT64);
|
|
int64_val = (signed long long)int64;
|
|
} else {
|
|
nct = (tag = NC_UINT64);
|
|
uint64_val = (unsigned long long)int64;
|
|
}
|
|
goto done;
|
|
}
|
|
if(isuinttype(tag) && int64 < 0)
|
|
goto outofrange;
|
|
switch (tag) {
|
|
case NC_UBYTE:
|
|
if(int64 <= NC_MAX_UBYTE) {
|
|
nct = NC_UBYTE;
|
|
ubyte_val = (unsigned char)int64;
|
|
} else
|
|
goto outofrange;
|
|
break;
|
|
case NC_USHORT:
|
|
if(int64 <= NC_MAX_USHORT) {
|
|
nct = NC_USHORT;
|
|
uint16_val = (unsigned short)int64;
|
|
} else
|
|
goto outofrange;
|
|
break;
|
|
case NC_UINT:
|
|
if(int64 <= NC_MAX_UINT) {
|
|
nct = NC_UINT;
|
|
uint32_val = (unsigned int)int64;
|
|
} else
|
|
goto outofrange;
|
|
break;
|
|
case NC_UINT64:
|
|
if(int64 <= NC_MAX_UINT64) {
|
|
nct = NC_UINT64;
|
|
uint64_val = uint64;
|
|
} else
|
|
goto outofrange;
|
|
break;
|
|
case NC_INT64:
|
|
nct = NC_INT64;
|
|
int64_val = int64;
|
|
break;
|
|
case NC_BYTE:
|
|
nct = NC_BYTE;
|
|
byte_val = (signed char)int64;
|
|
break;
|
|
case NC_SHORT:
|
|
nct = NC_SHORT;
|
|
int16_val = (signed short)int64;
|
|
break;
|
|
case NC_INT:
|
|
nct = NC_INT;
|
|
int32_val = (signed int)int64;
|
|
break;
|
|
default:
|
|
goto outofrange;
|
|
}
|
|
|
|
done:
|
|
*tagp = tag;
|
|
return nct;
|
|
outofrange:
|
|
yyerror("Value out of range");
|
|
return NC_NAT;
|
|
}
|
|
|
|
static int
|
|
nct2lexeme(nc_type nct)
|
|
{
|
|
switch(nct) {
|
|
case NC_BYTE: return BYTE_CONST;
|
|
case NC_CHAR: return CHAR_CONST;
|
|
case NC_SHORT: return SHORT_CONST;
|
|
case NC_INT: return INT_CONST;
|
|
case NC_UBYTE: return UBYTE_CONST;
|
|
case NC_USHORT: return USHORT_CONST;
|
|
case NC_UINT: return UINT_CONST;
|
|
case NC_INT64: return INT64_CONST;
|
|
case NC_UINT64: return UINT64_CONST;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
tagmatch(nc_type nct, int tag)
|
|
{
|
|
if(tag == NC_NAT || tag == NC_NOTAG)
|
|
return 1;
|
|
return nct == tag;
|
|
}
|
|
|
|
/* capture the tag string */
|
|
static int
|
|
collecttag(char* text, char** stagp)
|
|
{
|
|
char* stag0;
|
|
#define MAXTAGLEN 3
|
|
char stag[MAXTAGLEN+1];
|
|
int slen = strlen(text);
|
|
int staglen;
|
|
int tag = NC_NAT;
|
|
int hasU = 0;
|
|
|
|
for(stag0 = text+(slen-1);stag0 > 0;stag0--) {
|
|
if(strchr(TAGCHARS,*stag0) == NULL) {stag0++; break;}
|
|
}
|
|
if(stagp) *stagp = stag0;
|
|
staglen = strlen(stag0);
|
|
if(staglen == 0)
|
|
return NC_NOTAG;
|
|
if(staglen > MAXTAGLEN)
|
|
return tag;
|
|
strncpy(stag,stag0,sizeof(stag));
|
|
stag[MAXTAGLEN] = '\0';
|
|
if(stag[0] == 'U' || stag[0] == 'u') {
|
|
hasU = 1;
|
|
memmove(stag,stag+1,MAXTAGLEN);
|
|
staglen--;
|
|
} else if(stag[staglen-1] == 'U' || stag[staglen-1] == 'u') {
|
|
hasU = 1;
|
|
staglen--;
|
|
stag[staglen] = '\0';
|
|
}
|
|
if(strlen(stag) == 0 && hasU) {
|
|
tag = NC_UINT;
|
|
} else if(strlen(stag) == 1) {
|
|
switch (stag[0]) {
|
|
case 'B': case 'b': tag = (hasU ? NC_UBYTE : NC_BYTE); break;
|
|
case 'S': case 's': tag = (hasU ? NC_USHORT : NC_SHORT); break;
|
|
case 'L': case 'l': tag = (hasU ? NC_UINT : NC_INT); break;
|
|
default: break;
|
|
}
|
|
} else if(strcasecmp(stag,"ll") == 0) {
|
|
tag = (hasU ? NC_UINT64 : NC_INT64);
|
|
}
|
|
if(tag == NC_NAT) {
|
|
if(strlen(stag) > 0)
|
|
return tag;
|
|
tag = NC_NAT;
|
|
}
|
|
return tag;
|
|
}
|