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87ddebac4b
netcdf-c/ncgen/genc.c
Greg Sjaardema 33a88b5de6
Fix compression logic 
Level is unsigned, so test "level >= 0 ? 1:0" is the exact same as "1"
2018-05-07 08:34:41 -06:00

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C
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/*********************************************************************
* Copyright 1993, UCAR/Unidata
* See netcdf/COPYRIGHT file for copying and redistribution conditions.
* $Header: /upc/share/CVS/netcdf-3/ncgen/genc.c,v 1.6 2010/05/17 23:26:44 dmh Exp $
*********************************************************************/
#include "includes.h"
#include "nc_iter.h"
#include <ctype.h> /* for isprint() */
#ifdef ENABLE_C
#undef TRACE
/* Forward */
static const char* groupncid(Symbol*);
static const char* typencid(Symbol*);
static const char* varncid(Symbol*);
static const char* dimncid(Symbol*);
#ifdef USE_NETCDF4
static void definectype(Symbol*);
static void genc_deftype(Symbol*);
static void genc_definespecialattributes(Symbol* vsym);
static void genc_defineglobalspecials(void);
#endif
static void genc_defineattr(Symbol* asym);
static void genc_definevardata(Symbol*);
static void genc_write(Generator*,Symbol* sym, Bytebuffer* code,
int rank, size_t* start, size_t* count);
static void genc_writevar(Generator*,Symbol*,Bytebuffer*,int,size_t*,size_t*);
static void genc_writeattr(Generator*,Symbol*,Bytebuffer*,int,size_t*,size_t*);
/*
* Generate C code for creating netCDF from in-memory structure.
*/
void
gen_ncc(const char *filename)
{
int idim, ivar, iatt, maxdims;
int ndims, nvars, natts, ngatts;
char* cmode_string;
#ifdef USE_NETCDF4
int igrp,ityp, ngrps, ntyps;
#endif
ndims = listlength(dimdefs);
nvars = listlength(vardefs);
natts = listlength(attdefs);
ngatts = listlength(gattdefs);
#ifdef USE_NETCDF4
ngrps = listlength(grpdefs);
ntyps = listlength(typdefs);
#endif /*USE_NETCDF4*/
/* wrap in main program */
codeline("#include <stdio.h>");
codeline("#include <stdlib.h>");
codeline("#include <netcdf.h>");
codeline("");
codeflush();
if(specialconstants) {
/* If the input referenced e.g. nan, inf, etc;
then provide definitions for them */
codeline("");
codeline("#define nanf (0.0f/0.0f)");
codeline("#define nan (0.0/0.0)");
codeline("#define inff (1.0f/0.0f)");
codeline("#define inf (1.0/0.0)");
codeline("#define infinityf inff");
codeline("#define infinity inf");
codeline("");
codeflush();
}
codeline("");
codeflush();
#ifdef USE_NETCDF4
/* Construct C type definitions*/
if (ntyps > 0) {
for(ityp = 0; ityp < ntyps; ityp++) {
Symbol* tsym = (Symbol*)listget(typdefs,ityp);
definectype(tsym);
}
codeline("");
}
codeflush();
/* Construct the chunking constants*/
if(!usingclassic) {
for(ivar=0;ivar<nvars;ivar++) {
Bytebuffer* tmp = bbNew();
Symbol* var = (Symbol*)listget(vardefs,ivar);
Specialdata* special = &var->var.special;
if(special->flags & _CHUNKSIZES_FLAG) {
int i;
size_t* chunks = special->_ChunkSizes;
if(special->nchunks == 0 || chunks == NULL) continue;
bbClear(tmp);
for(i=0;i<special->nchunks;i++) {
bbprintf(tmp,"%s%ld",
(i == 0?"":", "),special->_ChunkSizes[i]);
}
bbprintf0(stmt,"static size_t %s_chunksizes[%d] = {",
cname(var),special->nchunks);
codedump(stmt);
codedump(tmp);
codeline("} ;");
}
if(special->flags & _FILTER_FLAG) {
int i;
unsigned int* params = special->_FilterParams;
if(special->nparams == 0 || params == NULL) continue;
bbClear(tmp);
for(i=0;i<special->nparams;i++) {
bbprintf(tmp,"%s%luU",
(i == 0?"":", "),params[i]);
}
bbprintf0(stmt,"static unsigned int %s_filterparams[%d] = {",
cname(var),special->nparams);
codedump(stmt);
codedump(tmp);
codeline("} ;");
}
bbFree(tmp);
}
codeline("");
}
#endif /*USE_NETCDF4*/
/* Now construct the main procedures*/
codeline("void");
codeline("check_err(const int stat, const int line, const char *file) {");
codelined(1,"if (stat != NC_NOERR) {");
codelined(2,"(void)fprintf(stderr,\"line %d of %s: %s\\n\", line, file, nc_strerror(stat));");
codelined(2,"fflush(stderr);");
codelined(2,"exit(1);");
codelined(1,"}");
codeline("}");
codeline("");
codeline("int");
bbprintf0(stmt,"%s() {/* create %s */\n", mainname, filename);
codedump(stmt);
/* create necessary declarations */
codeline("");
codelined(1,"int stat; /* return status */");
codelined(1,"int ncid; /* netCDF id */");
codeflush();
#ifdef USE_NETCDF4
/* Define variables to hold group ids*/
if(!usingclassic) {
codeline("");
codelined(1,"/* group ids */");
}
if(!usingclassic && ngrps > 0) {
for(igrp = 0; igrp < ngrps; igrp++) {
Symbol* gsym = (Symbol*)listget(grpdefs,igrp);
bbprintf0(stmt,"%sint %s;\n",indented(1),groupncid(gsym));
codedump(stmt);
}
}
/* define variables to hold type ids*/
if(!usingclassic && ntyps > 0) {
codeline("");
codelined(1,"/* type ids */");
for(ityp = 0; ityp < ntyps; ityp++) {
Symbol* tsym = (Symbol*)listget(typdefs,ityp);
bbprintf0(stmt,"%sint %s;\n",indented(1), typencid(tsym));
codedump(stmt);
}
}
codeflush();
#endif
if (ndims > 0) {
codeline("");
codelined(1,"/* dimension ids */");
for(idim = 0; idim < ndims; idim++) {
Symbol* dsym = (Symbol*)listget(dimdefs,idim);
bbprintf0(stmt,"%sint %s;\n", indented(1), dimncid(dsym));
codedump(stmt);
}
codeline("");
codelined(1,"/* dimension lengths */");
for(idim = 0; idim < ndims; idim++) {
Symbol* dsym = (Symbol*)listget(dimdefs,idim);
if(dsym->dim.isunlimited) {
bbprintf0(stmt,"%ssize_t %s_len = NC_UNLIMITED;\n",
indented(1),cname(dsym));
} else {
bbprintf0(stmt,"%ssize_t %s_len = %lu;\n",
indented(1),
cname(dsym),
(unsigned long) dsym->dim.declsize);
}
codedump(stmt);
}
}
codeflush();
maxdims = 0; /* most dimensions of any variable */
for(ivar = 0; ivar < nvars; ivar++) {
Symbol* vsym = (Symbol*)listget(vardefs,ivar);
if(vsym->typ.dimset.ndims > maxdims)
maxdims = vsym->typ.dimset.ndims;
}
if (nvars > 0) {
codeline("");
codelined(1,"/* variable ids */");
for(ivar = 0; ivar < nvars; ivar++) {
Symbol* vsym = (Symbol*)listget(vardefs,ivar);
bbprintf0(stmt," int %s;\n", varncid(vsym));
codedump(stmt);
}
codeline("");
codelined(1,"/* rank (number of dimensions) for each variable */");
for(ivar = 0; ivar < nvars; ivar++) {
Symbol* vsym = (Symbol*)listget(vardefs,ivar);
bbprintf0(stmt,"# define RANK_%s %d\n", cname(vsym),
vsym->typ.dimset.ndims);
codedump(stmt);
}
if (maxdims > 0) { /* we have dimensioned variables */
codeline("");
codelined(1,"/* variable shapes */");
for(ivar = 0; ivar < nvars; ivar++) {
Symbol* vsym = (Symbol*)listget(vardefs,ivar);
if (vsym->typ.dimset.ndims > 0) {
bbprintf0(stmt," int %s_dims[RANK_%s];\n",
cname(vsym), cname(vsym));
codedump(stmt);
}
}
}
}
codeflush();
/* Set log level */
if(ncloglevel >= 0) {
codeline("");
bbprintf0(stmt," nc_set_log_level(%d); /* set log level */",ncloglevel);
codedump(stmt);
codeline("");
}
/* create netCDF file, uses NC_CLOBBER mode */
codeline("");
codelined(1,"/* enter define mode */");
if (!cmode_modifier) {
cmode_string = "NC_CLOBBER";
} else if (cmode_modifier & NC_64BIT_OFFSET) {
cmode_string = "NC_CLOBBER|NC_64BIT_OFFSET";
#ifdef USE_NETCDF4
} else if (cmode_modifier & NC_CLASSIC_MODEL) {
cmode_string = "NC_CLOBBER|NC_NETCDF4|NC_CLASSIC_MODEL";
} else if (cmode_modifier & NC_NETCDF4) {
cmode_string = "NC_CLOBBER|NC_NETCDF4";
#endif
} else {
derror("unknown cmode modifier");
cmode_string = "NC_CLOBBER";
}
bbprintf0(stmt," stat = nc_create(\"%s\", %s, &ncid);\n",
filename,cmode_string);
codedump(stmt);
codelined(1,"check_err(stat,__LINE__,__FILE__);");
codeflush();
#ifdef USE_NETCDF4
genc_defineglobalspecials();
#endif /*USE_NETCDF4*/
#ifdef USE_NETCDF4
/* Define the group structure */
/* ncid created above is also root group*/
if(!usingclassic) {
bbprintf0(stmt," %s = ncid;\n",groupncid(rootgroup));
codedump(stmt);
/* walking grpdefs list will do a preorder walk of all defined groups*/
for(igrp=0;igrp<listlength(grpdefs);igrp++) {
Symbol* gsym = (Symbol*)listget(grpdefs,igrp);
if(gsym == rootgroup) continue; /* ignore root*/
if(gsym->container == NULL)
PANIC("null container");
bbprintf0(stmt,
" stat = nc_def_grp(%s, \"%s\", &%s);\n",
groupncid(gsym->container),
gsym->name, groupncid(gsym));
codedump(stmt);
codelined(1,"check_err(stat,__LINE__,__FILE__);");
}
codeflush();
}
#endif
#ifdef USE_NETCDF4
/* Construct code to define types*/
if(ntyps > 0) {
codeline("");
for(ityp = 0; ityp < ntyps; ityp++) {
Symbol* tsym = (Symbol*)listget(typdefs,ityp);
if(tsym->subclass == NC_PRIM
|| tsym->subclass == NC_ARRAY) continue; /* no need to do these*/
genc_deftype(tsym);
codeline("");
}
}
codeflush();
#endif
/* define dimensions from info in dims array */
if (ndims > 0) {
codeline("");
codelined(1,"/* define dimensions */");
for(idim = 0; idim < ndims; idim++) {
Symbol* dsym = (Symbol*)listget(dimdefs,idim);
{
bbprintf0(stmt,
" stat = nc_def_dim(%s, \"%s\", %s_len, &%s);\n",
groupncid(dsym->container),
escapifyname(dsym->name),
cname(dsym),
dimncid(dsym));
}
codedump(stmt);
codelined(1,"check_err(stat,__LINE__,__FILE__);");
}
}
codeflush();
/* define variables from info in vars array */
if (nvars > 0) {
codeline("");
codelined(1,"/* define variables */");
for(ivar = 0; ivar < nvars; ivar++) {
Symbol* vsym = (Symbol*)listget(vardefs,ivar);
Symbol* basetype = vsym->typ.basetype;
Dimset* dimset = &vsym->typ.dimset;
codeline("");
if(dimset->ndims > 0) {
for(idim = 0; idim < dimset->ndims; idim++) {
Symbol* dsym = dimset->dimsyms[idim];
bbprintf0(stmt,
" %s_dims[%d] = %s;\n",
cname(vsym),
idim,
dimncid(dsym));
codedump(stmt);
}
}
bbprintf0(stmt,
" stat = nc_def_var(%s, \"%s\", %s, RANK_%s, %s, &%s);\n",
groupncid(vsym->container),
escapifyname(vsym->name),
typencid(basetype),
cname(vsym),
(dimset->ndims == 0?"0":poolcat(cname(vsym),"_dims")),
varncid(vsym));
codedump(stmt);
codelined(1,"check_err(stat,__LINE__,__FILE__);");
#ifdef USE_NETCDF4
genc_definespecialattributes(vsym);
#endif /*USE_NETCDF4*/
}
}
codeflush();
/* Define the global attributes*/
if(ngatts > 0) {
codeline("");
codelined(1,"/* assign global attributes */");
for(iatt = 0; iatt < ngatts; iatt++) {
Symbol* gasym = (Symbol*)listget(gattdefs,iatt);
genc_defineattr(gasym);
}
codeline("");
}
codeflush();
/* Define the variable specific attributes*/
if(natts > 0) {
codeline("");
codelined(1,"/* assign per-variable attributes */");
for(iatt = 0; iatt < natts; iatt++) {
Symbol* asym = (Symbol*)listget(attdefs,iatt);
genc_defineattr(asym);
}
codeline("");
}
codeflush();
if (nofill_flag) {
codelined(1,"/* don't initialize variables with fill values */");
bbindent(stmt,1);
bbprintf0(stmt,"stat = nc_set_fill(%s, NC_NOFILL, 0);",groupncid(rootgroup));
codelined(1,"check_err(stat,__LINE__,__FILE__);");
}
codeline("");
codelined(1,"/* leave define mode */");
bbprintf0(stmt," stat = nc_enddef (%s);\n",groupncid(rootgroup));
codedump(stmt);
codelined(1,"check_err(stat,__LINE__,__FILE__);");
codeflush();
if(!header_only) {
/* Load values into those variables with defined data */
if(nvars > 0) {
codeline("");
codelined(1,"/* assign variable data */");
for(ivar = 0; ivar < nvars; ivar++) {
Symbol* vsym = (Symbol*)listget(vardefs,ivar);
if(vsym->data != NULL) genc_definevardata(vsym);
}
codeline("");
}
codeflush();
}
}
#ifdef USE_NETCDF4
static void
genc_defineglobalspecials(void)
{
const char* format = NULL;
if(usingclassic) return;
if(!/*Main.*/format_attribute) return;
/* Watch out, this is a global Attribute */
format = kind_string(globalspecials._Format);
bbprintf0(stmt,"%sstat = nc_put_att_text(ncid, NC_GLOBAL, \"_Format\", 1, \"%s\");\n",
indented(1),
format);
codedump(stmt);
codelined(1,"check_err(stat,__LINE__,__FILE__);");
}
static void
genc_definespecialattributes(Symbol* vsym)
{
Specialdata* special = &vsym->var.special;
if(usingclassic) return;
if(special->flags & _STORAGE_FLAG) {
int storage = special->_Storage;
size_t* chunks = special->_ChunkSizes;
bbprintf0(stmt,
" stat = nc_def_var_chunking(%s, %s, %s, ",
groupncid(vsym->container),
varncid(vsym),
(storage == NC_CONTIGUOUS?"NC_CONTIGUOUS":"NC_CHUNKED"));
codedump(stmt);
if(special->nchunks == 0 || chunks == NULL)
codepartial("NULL");
else {
bbprintf0(stmt,"%s_chunksizes",cname(vsym));
codedump(stmt);
}
codeline(");");
codelined(1,"check_err(stat,__LINE__,__FILE__);");
}
if(special->flags & _FLETCHER32_FLAG) {
bbprintf0(stmt,
" stat = nc_def_var_fletcher32(%s, %s, %d);\n",
groupncid(vsym->container),
varncid(vsym),
special->_Fletcher32);
codedump(stmt);
codelined(1,"check_err(stat,__LINE__,__FILE__);");
}
if(special->flags & (_DEFLATE_FLAG | _SHUFFLE_FLAG)) {
bbprintf0(stmt,
" stat = nc_def_var_deflate(%s, %s, %s, %d, %d);\n",
groupncid(vsym->container),
varncid(vsym),
(special->_Shuffle == 1?"NC_SHUFFLE":"NC_NOSHUFFLE"),
(special->_DeflateLevel >= 0?1:0),
(special->_DeflateLevel >= 0?special->_DeflateLevel:0));
codedump(stmt);
codelined(1,"check_err(stat,__LINE__,__FILE__);");
}
if(special->flags & _ENDIAN_FLAG) {
bbprintf0(stmt,
" stat = nc_def_var_endian(%s, %s, %s);\n",
groupncid(vsym->container),
varncid(vsym),
(special->_Endianness == NC_ENDIAN_LITTLE?"NC_ENDIAN_LITTLE"
:"NC_ENDIAN_BIG")
);
codedump(stmt);
codelined(1,"check_err(stat,__LINE__,__FILE__);");
}
if(special->flags & _NOFILL_FLAG) {
bbprintf0(stmt,
" stat = nc_def_var_fill(%s, %s, %s, NULL);\n",
groupncid(vsym->container),
varncid(vsym),
(special->_Fill?"NC_FILL":"NC_NOFILL")
);
codedump(stmt);
codelined(1,"check_err(stat,__LINE__,__FILE__);");
}
if(special->flags & _FILTER_FLAG) {
/* Special check for alternate way to specify _Deflate */
if(special->_FilterID == ZIP_ID) {
unsigned int level;
if(special->nparams == 0 || special->_FilterParams == NULL)
level = 9; /* default */
else
level = special->_FilterParams[0];
if(level > 9)
derror("Illegal deflate level");
else {
bbprintf0(stmt,
" stat = nc_def_var_deflate(%s, %s, %s, %d, %d);\n",
groupncid(vsym->container),
varncid(vsym),
(special->_Shuffle == 1?"NC_SHUFFLE":"NC_NOSHUFFLE"),
1,
level);
codedump(stmt);
}
} else {
bbprintf0(stmt,
" stat = nc_def_var_filter(%s, %s, %u, %lu, ",
groupncid(vsym->container),
varncid(vsym),
special->_FilterID,
special->nparams
);
codedump(stmt);
if(special->nparams == 0 || special->_FilterParams == NULL)
codepartial("NULL");
else {
bbprintf0(stmt,"%s_filterparams",cname(vsym));
codedump(stmt);
}
codeline(");");
}
codelined(1,"check_err(stat,__LINE__,__FILE__);");
}
}
#endif /*USE_NETCDF4*/
void
cl_c(void)
{
bbprintf0(stmt,"%sstat = nc_close(%s);\n",indented(1),groupncid(rootgroup));
codedump(stmt);
codelined(1,"check_err(stat,__LINE__,__FILE__);");
#ifndef vms
codelined(1,"return 0;");
#else
codelined(1,"return 1;");
#endif
codeline("}");
codeflush();
}
/*
* Output a C statement
*/
/* return C name for netCDF type, given type code */
const char *
nctype(nc_type type)
{
switch (type) {
case NC_CHAR: return "NC_CHAR";
case NC_BYTE: return "NC_BYTE";
case NC_SHORT: return "NC_SHORT";
case NC_INT: return "NC_INT";
case NC_FLOAT: return "NC_FLOAT";
case NC_DOUBLE: return "NC_DOUBLE";
case NC_UBYTE: return "NC_UBYTE";
case NC_USHORT: return "NC_USHORT";
case NC_UINT: return "NC_UINT";
case NC_INT64: return "NC_INT64";
case NC_UINT64: return "NC_UINT64";
case NC_STRING: return "NC_STRING";
default: PANIC("nctype: bad type code");
}
return NULL;
}
/*
* Return C type name for netCDF type, given type code.
*/
const char*
ncctype(nc_type type)
{
switch (type) {
case NC_CHAR:
return "char";
case NC_BYTE:
return "signed char";
case NC_SHORT:
return "short";
case NC_INT:
return "int";
case NC_FLOAT:
return "float";
case NC_DOUBLE:
return "double";
case NC_UBYTE:
return "unsigned char";
case NC_USHORT:
return "unsigned short";
case NC_UINT:
return "unsigned int";
case NC_INT64:
return "signed long long";
case NC_UINT64:
return "unsigned long long";
case NC_STRING:
return "char*";
default:
PANIC1("ncctype: bad type code:%d",type);
}
return 0;
}
/*
* Return C type name for netCDF type suffix, given type code.
*/
const char*
ncstype(nc_type nctype)
{
switch (nctype) {
case NC_CHAR:
return "text";
case NC_BYTE:
return "schar";
case NC_SHORT:
return "short";
case NC_INT:
return "int";
case NC_FLOAT:
return "float";
case NC_DOUBLE:
return "double";
case NC_UBYTE:
return "ubyte";
case NC_USHORT:
return "ushort";
case NC_UINT:
return "uint";
case NC_INT64:
return "longlong";
case NC_UINT64:
return "ulonglong";
case NC_STRING:
return "string";
default:
derror("ncstype: bad type code: %d",nctype);
return 0;
}
}
/* Return the group name for the specified group*/
static const char*
groupncid(Symbol* sym)
{
#ifdef USE_NETCDF4
if(usingclassic) {
return "ncid";
} else {
char* grptmp;
const char* tmp1;
if(sym == NULL) return groupncid(rootgroup);
ASSERT(sym->objectclass == NC_GRP);
tmp1 = cname(sym);
grptmp = poolalloc(strlen(tmp1)+strlen("_grp")+1);
strcpy(grptmp,tmp1);
strcat(grptmp,"_grp");
return grptmp;
}
#else
return "ncid";
#endif
}
/* Compute the C name for a given type's id*/
/* Watch out: the result is a static*/
static const char*
typencid(Symbol* tsym)
{
char* typtmp;
const char* tmp1;
if(tsym->subclass == NC_PRIM)
return nctype(tsym->typ.typecode);
tmp1 = ctypename(tsym);
typtmp = poolalloc(strlen(tmp1)+strlen("_typ")+1);
strcpy(typtmp,tmp1);
strcat(typtmp,"_typ");
return typtmp;
}
/* Compute the C name for a given var's id*/
/* Watch out: the result is a static*/
static const char*
varncid(Symbol* vsym)
{
const char* tmp1;
char* vartmp;
tmp1 = cname(vsym);
vartmp = poolalloc(strlen(tmp1)+strlen("_id")+1);
strcpy(vartmp,tmp1);
strcat(vartmp,"_id");
return vartmp;
}
/* Compute the C name for a given dim's id*/
/* Watch out: the result is pooled*/
static const char*
dimncid(Symbol* dsym)
{
const char* tmp1;
char* dimtmp;
tmp1 = cname(dsym);
dimtmp = poolalloc(strlen(tmp1)+strlen("_dim")+1);
strcpy(dimtmp,tmp1);
strcat(dimtmp,"_dim");
return dimtmp;
}
/* Compute the C name for a given type*/
const char*
ctypename(Symbol* tsym)
{
const char* name;
ASSERT(tsym->objectclass == NC_TYPE);
if(tsym->subclass == NC_PRIM)
name = ncctype(tsym->typ.typecode);
else
name = cname(tsym);
return name;
}
#ifdef USE_NETCDF4
static void
definectype(Symbol* tsym)
{
int i,j;
ASSERT(tsym->objectclass == NC_TYPE);
switch (tsym->subclass) {
case NC_PRIM: break; /* these are already taken care of*/
case NC_OPAQUE:
bbprintf0(stmt,"typedef unsigned char %s[%lu];\n",
cname(tsym), tsym->typ.size);
codedump(stmt);
break;
case NC_ENUM:
for(i=0;i<listlength(tsym->subnodes);i++) {
Symbol* econst = (Symbol*)listget(tsym->subnodes,i);
Bytebuffer* econststring = bbNew();
ASSERT(econst->subclass == NC_ECONST);
c_generator->constant(c_generator,tsym,&econst->typ.econst,econststring);
bbNull(econststring);
/* Enum constants must be converted to a fully qualified name */
bbprintf0(stmt,"#define %s ((%s)%s)\n",
cname(econst),
ctypename(econst->typ.basetype),
bbContents(econststring));
bbFree(econststring);
codedump(stmt);
}
bbprintf0(stmt,"typedef %s %s;\n",
ctypename(tsym->typ.basetype), cname(tsym));
codedump(stmt);
break;
case NC_VLEN:
bbprintf0(stmt,"typedef nc_vlen_t %s;\n",
ctypename(tsym));
codedump(stmt);
break;
case NC_COMPOUND:
bbprintf0(stmt,"typedef struct %s {\n",cname(tsym));
codedump(stmt);
for(i=0;i<listlength(tsym->subnodes);i++) {
Symbol* efield = (Symbol*)listget(tsym->subnodes,i);
ASSERT(efield->subclass == NC_FIELD);
bbprintf0(stmt,"%s%s %s",
indented(1),ctypename(efield->typ.basetype),cname(efield));
codedump(stmt);
/* compute any dimension specification*/
if(efield->typ.dimset.ndims > 0) {
Bytebuffer* dimbuf = bbNew();
for(j=0;j<efield->typ.dimset.ndims;j++) {
Symbol* dim;
char tmp[64];
bbCat(dimbuf,"[");
dim = efield->typ.dimset.dimsyms[j];
ASSERT(dim->dim.isconstant);
snprintf(tmp,sizeof(tmp),"%u",
(unsigned int)dim->dim.declsize);
bbCat(dimbuf,tmp);
bbCat(dimbuf,"]");
}
codedump(dimbuf);
bbFree(dimbuf);
}
codeline(";");
}
bbprintf0(stmt,"} %s;\n", ctypename(tsym));
codedump(stmt);
break;
case NC_ARRAY:
/* ignore: this will be handled by def_var*/
break;
default: panic("definectype: unexpected type subclass: %d",tsym->subclass);
}
}
/*
Generate the C code for defining a given type
*/
static void
genc_deftype(Symbol* tsym)
{
int i;
ASSERT(tsym->objectclass == NC_TYPE);
switch (tsym->subclass) {
case NC_PRIM: break; /* these are already taken care of*/
case NC_OPAQUE:
bbprintf0(stmt,"%sstat = nc_def_opaque(%s, %lu, \"%s\", &%s);\n",
indented(1),
groupncid(tsym->container),
tsym->typ.size,
tsym->name,
typencid(tsym));
codedump(stmt);
codelined(1,"check_err(stat,__LINE__,__FILE__);");
break;
case NC_ENUM:
codelined(1,"{");
bbprintf0(stmt,"%s%s econst;\n",
indented(1),
ncctype(tsym->typ.basetype->typ.typecode));
codedump(stmt);
bbprintf0(stmt,"%sstat = nc_def_enum(%s, %s, \"%s\", &%s);\n",
indented(1),
groupncid(tsym->container),
nctype(tsym->typ.basetype->typ.typecode),
tsym->name,
typencid(tsym));
codedump(stmt);
codelined(1,"check_err(stat,__LINE__,__FILE__);");
for(i=0;i<listlength(tsym->subnodes);i++) {
Symbol* econst = (Symbol*)listget(tsym->subnodes,i);
Bytebuffer* econststring = bbNew();
ASSERT(econst->subclass == NC_ECONST);
c_generator->constant(c_generator,tsym,&econst->typ.econst,econststring);
bbNull(econststring);
bbprintf0(stmt,"%seconst = %s;\n",
indented(1),bbContents(econststring));
bbFree(econststring);
codedump(stmt);
bbprintf0(stmt,"%sstat = nc_insert_enum(%s, %s, \"%s\", &econst);\n",
indented(1),
groupncid(tsym->container),
typencid(tsym),
escapifyname(econst->name));
codedump(stmt);
}
codelined(1,"}");
break;
case NC_VLEN:
bbprintf0(stmt,"%sstat = nc_def_vlen(%s, \"%s\", %s, &%s);",
indented(1),
groupncid(tsym->container),
escapifyname(tsym->name),
typencid(tsym->typ.basetype),
typencid(tsym));
codedump(stmt);
codelined(1,"check_err(stat,__LINE__,__FILE__);");
break;
case NC_COMPOUND:
bbprintf0(stmt,"%sstat = nc_def_compound(%s, sizeof(%s), \"%s\", &%s);",
indented(1),
groupncid(tsym->container),
ctypename(tsym),
escapifyname(tsym->name),
typencid(tsym));
codedump(stmt);
codelined(1,"check_err(stat,__LINE__,__FILE__);");
/* Generate the field dimension constants*/
codelined(1,"{");
for(i=0;i<listlength(tsym->subnodes);i++) {
int j;
Symbol* efield = (Symbol*)listget(tsym->subnodes,i);
ASSERT(efield->subclass == NC_FIELD);
if(efield->typ.dimset.ndims == 0) continue;
bbprintf0(stmt,"%sstatic int %s_dims[%d] = {\n",
indented(1),
cname(efield),efield->typ.dimset.ndims);
for(j=0;j<efield->typ.dimset.ndims;j++) {
char tmp[256];
Symbol* e = efield->typ.dimset.dimsyms[j];
ASSERT(e->dim.isconstant);
snprintf(tmp,sizeof(tmp),"%u",(unsigned int)e->dim.declsize);
bbCat(stmt,(j==0?"":", "));
bbCat(stmt,tmp);
}
bbCat(stmt,"};");
codedump(stmt);
}
for(i=0;i<listlength(tsym->subnodes);i++) {
Symbol* efield = (Symbol*)listget(tsym->subnodes,i);
char tmp[1024];
ASSERT(efield->subclass == NC_FIELD);
#ifdef TESTALIGNMENT
snprintf(tmp,sizeof(tmp),"%lu",efield->typ.offset);
#else
snprintf(tmp,sizeof(tmp),"NC_COMPOUND_OFFSET(%s,%s)",
ctypename(tsym), cname(efield));
#endif
if(efield->typ.dimset.ndims > 0){
bbprintf0(stmt,"%sstat = nc_insert_array_compound(%s, %s, \"%s\", %s, %s, %d, %s_dims);",
indented(1),
groupncid(tsym->container),
typencid(tsym),
escapifyname(efield->name),
tmp,
typencid(efield->typ.basetype),
efield->typ.dimset.ndims,
cname(efield));
} else {
bbprintf0(stmt,"%sstat = nc_insert_compound(%s, %s, \"%s\", %s, %s);",
indented(1),
groupncid(tsym->container),
typencid(tsym),
escapifyname(efield->name),
tmp,
typencid(efield->typ.basetype));
}
codedump(stmt);
codelined(1,"check_err(stat,__LINE__,__FILE__);");
}
codelined(1,"}");
break;
case NC_ARRAY:
/* ignore: this will be handled by def_var*/
break;
default: panic("genc_deftype: unexpected type subclass: %d",tsym->subclass);
}
}
#endif /*USE_NETCDF4*/
static void
genc_defineattr(Symbol* asym)
{
/* we need to capture vlen strings for dumping */
Bytebuffer* save = bbNew(); /* capture so we can dump
vlens first */
List* oldstate = NULL;
generator_getstate(c_generator,(void*)&oldstate);
listfree(oldstate);
generator_reset(c_generator,(void*)listnew());
generate_attrdata(asym,c_generator,(Writer)genc_write,save);
bbFree(save);
}
static void
genc_definevardata(Symbol* vsym)
{
Bytebuffer* save; /* capture so we can dump vlens first */
List* oldstate = NULL;
if(vsym->data == NULL) return;
save = bbNew();
generator_getstate(c_generator,(void*)&oldstate);
listfree(oldstate);
generator_reset(c_generator,(void*)listnew());
generate_vardata(vsym,c_generator,(Writer)genc_write,save);
bbFree(save);
}
static void
genc_write(Generator* generator, Symbol* sym, Bytebuffer* code,
int rank, size_t* start, size_t* count)
{
if(sym->objectclass == NC_ATT)
genc_writeattr(generator,sym,code,rank,start,count);
else if(sym->objectclass == NC_VAR)
genc_writevar(generator,sym,code,rank,start,count);
else
PANIC("illegal symbol for genc_write");
}
static void
genc_writevar(Generator* generator, Symbol* vsym, Bytebuffer* code,
int rank, size_t* start, size_t* count)
{
Symbol* basetype = vsym->typ.basetype;
nc_type typecode = basetype->typ.typecode;
List* vlendecls;
/* define a block to avoid name clashes*/
codeline("");
codelined(1,"{");
/* Dump any vlen decls first */
generator_getstate(generator,(void**)&vlendecls);
if(vlendecls != NULL && listlength(vlendecls) > 0) {
int i;
for(i=0;i<listlength(vlendecls);i++) {
Bytebuffer* decl = (Bytebuffer*)listget(vlendecls,i);
codelined(1,bbContents(decl));
bbFree(decl);
}
listfree(vlendecls);
generator_reset(generator,NULL);
}
if(rank == 0) {
codelined(1,"size_t count = 0;");
/* We make the data be an array so we do not need to
ampersand it later => we need an outer pair of braces
*/
commify(code); /* insert commas at proper places */
bbprintf0(stmt,"%sstatic %s %s_data[1] = {%s};\n",
indented(1),
ctypename(basetype),
cname(vsym),
bbContents(code));
codedump(stmt);
bbprintf0(stmt,"%sstat = nc_put_var1(%s, %s, &count, %s_data);\n",
indented(1),
groupncid(vsym->container),
varncid(vsym),
cname(vsym));
codedump(stmt);
codelined(1,"check_err(stat,__LINE__,__FILE__);");
codeflush();
} else { /* rank > 0 */
int i;
size_t length = 0;
if(typecode == NC_CHAR) {
length = bbLength(code);
/* generate data constant */
bbprintf(stmt,"%schar* %s_data = ",
indented(1),
cname(vsym),
(unsigned long)length);
codedump(stmt);
cquotestring(code,'"');
codedump(code);
codeline(" ;");
} else {
/* Compute total size */
length = 1;
for(i=0;i<rank;i++) length *= count[i];
/* generate data constant */
commify(code); /* insert commas at proper places */
bbprintf(stmt,"%s%s %s_data[%lu] = ",
indented(1),
ctypename(basetype),
cname(vsym),
(unsigned long)length);
codedump(stmt);
/* C requires an outer set of braces on datalist constants */
codepartial("{");
codedump(code);
codeline("} ;");
}
/* generate constants for startset, countset*/
bbprintf0(stmt,"%ssize_t %s_startset[%u] = {",
indented(1),
cname(vsym),
rank);
for(i=0;i<rank;i++) {
bbprintf(stmt,"%s%lu",(i>0?", ":""),start[i]);
}
codedump(stmt);
codeline("} ;");
bbprintf0(stmt,"%ssize_t %s_countset[%u] = {",
indented(1),
cname(vsym),
rank);
for(i=0;i<rank;i++) {
bbprintf(stmt,"%s%lu",(i>0?", ":""),count[i]);
}
codedump(stmt);
codeline("};");
bbprintf0(stmt,"%sstat = nc_put_vara(%s, %s, %s_startset, %s_countset, %s_data);\n",
indented(1),
groupncid(vsym->container), varncid(vsym),
cname(vsym),
cname(vsym),
cname(vsym));
codedump(stmt);
codelined(1,"check_err(stat,__LINE__,__FILE__);");
}
/* end defined block*/
codelined(1,"}\n");
codeflush();
}
static void
genc_writeattr(Generator* generator, Symbol* asym, Bytebuffer* code,
int rank, size_t* start, size_t* count)
{
Symbol* basetype = asym->typ.basetype;
int typecode = basetype->typ.typecode;
size_t len = asym->data->length; /* default assumption */
/* define a block to avoid name clashes*/
codeline("");
codelined(1,"{");
/* Handle NC_CHAR specially */
if(typecode == NC_CHAR) {
len = bbLength(code); /* presumably before quoting */
/* Revise length if length == 0 */
if(len == 0) len++;
cquotestring(code,'"');
} else {
/* All other cases */
/* Dump any vlen decls first */
List* vlendecls;
generator_getstate(generator,(void**)&vlendecls);
if(vlendecls != NULL && listlength(vlendecls) > 0) {
int i;
for(i=0;i<listlength(vlendecls);i++) {
Bytebuffer* decl = (Bytebuffer*)listget(vlendecls,i);
codelined(1,bbContents(decl));
bbFree(decl);
}
listfree(vlendecls);
generator_reset(generator,NULL);
}
commify(code);
bbprintf0(stmt,"%sstatic const %s %s_att[%ld] = ",
indented(1),
ctypename(basetype),
cname(asym),
asym->data->length
);
codedump(stmt);
codepartial("{");
codedump(code);
codepartial("}");
codeline(" ;");
bbClear(code);
}
/* Use the specialized put_att_XX routines if possible*/
switch (basetype->typ.typecode) {
case NC_BYTE:
case NC_SHORT:
case NC_INT:
case NC_FLOAT:
case NC_DOUBLE:
bbprintf0(stmt,"%sstat = nc_put_att_%s(%s, %s, \"%s\", %s, %lu, %s_att);\n",
indented(1),
ncstype(basetype->typ.typecode),
groupncid(asym->container),
(asym->att.var == NULL?"NC_GLOBAL"
:varncid(asym->att.var)),
escapifyname(asym->name),
typencid(basetype),
len,
cname(asym));
codedump(stmt);
break;
case NC_CHAR:
/* Include the string constant in-line */
bbprintf0(stmt,"%sstat = nc_put_att_%s(%s, %s, \"%s\", %lu, %s);\n",
indented(1),
ncstype(basetype->typ.typecode),
groupncid(asym->container),
(asym->att.var == NULL?"NC_GLOBAL"
:varncid(asym->att.var)),
escapifyname(asym->name),
len,
bbContents(code));
codedump(stmt);
break;
/* !usingclassic only (except NC_STRING) */
case NC_UBYTE:
case NC_USHORT:
case NC_UINT:
case NC_INT64:
case NC_UINT64:
if(usingclassic && k_flag <= 2) {
verror("Non-classic type: %s",nctypename(basetype->typ.typecode));
return;
}
bbprintf0(stmt,"%sstat = nc_put_att_%s(%s, %s, \"%s\", %s, %lu, %s_att);",
indented(1),
ncstype(basetype->typ.typecode),
groupncid(asym->container),
(asym->att.var == NULL?"NC_GLOBAL"
:varncid(asym->att.var)),
escapifyname(asym->name),
typencid(basetype),
len,
cname(asym));
codedump(stmt);
break;
#ifdef USE_NETCDF4
case NC_STRING:
if(usingclassic) {
verror("Non-classic type: %s",nctypename(basetype->typ.typecode));
return;
}
bbprintf0(stmt,"%sstat = nc_put_att_%s(%s, %s, \"%s\", %lu, %s_att);",
indented(1),
ncstype(basetype->typ.typecode),
groupncid(asym->container),
(asym->att.var == NULL?"NC_GLOBAL"
:varncid(asym->att.var)),
escapifyname(asym->name),
len,
cname(asym));
codedump(stmt);
break;
#endif
default: /* User defined type */
#ifndef USE_NETCDF4
verror("Non-classic type: %s",nctypename(basetype->typ.typecode));
#else /* !USE_NETCDF4 */
if(usingclassic && !isclassicprim(basetype->typ.typecode)) {
verror("Non-classic type: %s",nctypename(basetype->typ.typecode));
}
bbprintf0(stmt,"%sstat = nc_put_att(%s, %s, \"%s\", %s, %lu, %s_att);\n",
indented(1),
groupncid(asym->container),
(asym->att.var == NULL?"NC_GLOBAL"
:varncid(asym->att.var)),
escapifyname(asym->name),
typencid(basetype),
len,
cname(asym));
codedump(stmt);
#endif
break;
}
codelined(1,"check_err(stat,__LINE__,__FILE__);");
codelined(1,"}");
}
/* Compute the C name for a given symbol;
modified to use the fqn
*/
const char*
cname(Symbol* sym)
{
char* name;
assert (sym->fqn != NULL && sym->name != NULL);
/* Convert the fqn as its C name. */
if(sym->grp.is_root)
name = codify(sym->name);
else
name = codify(sym->fqn);
return name;
}
#endif /*ENABLE_C*/
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