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https://github.com/Unidata/netcdf-c.git
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203 lines
6.1 KiB
C
203 lines
6.1 KiB
C
/*********************************************************************
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* Copyright 1993, UCAR/Unidata
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* See netcdf/COPYRIGHT file for copying and redistribution conditions.
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* $Header: /upc/share/CVS/netcdf-3/ncgen/getfill.c,v 1.8 2010/04/14 22:04:56 dmh Exp $
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*********************************************************************/
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#include "includes.h"
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#include "dump.h"
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/* mnemonic*/
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#define TOPLEVEL 1
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/*Forward*/
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static void fill(Symbol* tsym, Datalist*);
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static void fillarray(Symbol* tsym, Dimset* dimset, int index, Datalist*);
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static void filllist(Symbol* tvsym, Datalist* dl);
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/* Construct a Datalist representing a complete fill value*/
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/* for a specified variable */
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/* Cache if needed later*/
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Datalist*
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getfiller(Symbol* tvsym)
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{
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Datalist* filler = NULL;
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Symbol* tsym = tvsym;
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ASSERT(tvsym->objectclass == NC_VAR || tvsym->objectclass == NC_TYPE);
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if(tvsym->objectclass == NC_VAR) {
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tsym = tvsym->typ.basetype;
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filler = tvsym->var.special._Fillvalue; /* get cached value (if any)*/
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}
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if(filler == NULL || tvsym->objectclass == NC_TYPE) {
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filler = tvsym->typ._Fillvalue; /* get cached value (if any)*/
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}
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if(filler == NULL) { /* need to compute it*/
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filler = builddatalist(0);
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fill(tsym,filler);
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}
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#ifdef GENDEBUG2
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dumpdatalist(filler,"getfiller");
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#endif
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if(tvsym->objectclass == NC_VAR) {
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tvsym->var.special._Fillvalue = filler;
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} else if(tvsym->objectclass == NC_TYPE) {
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tvsym->typ._Fillvalue = filler; /* cache value*/
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}
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return filler;
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}
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static void
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fill(Symbol* tsym, Datalist* filler)
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{
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unsigned long i;
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NCConstant con = nullconstant;
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Datalist* sublist;
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ASSERT(tsym->objectclass == NC_TYPE);
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switch (tsym->subclass) {
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case NC_ENUM: case NC_OPAQUE: case NC_PRIM:
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con.nctype = tsym->typ.typecode;
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nc_getfill(&con);
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break;
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case NC_COMPOUND:
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sublist = builddatalist(listlength(tsym->subnodes));
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for(i=0;i<listlength(tsym->subnodes);i++) {
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Symbol* field = (Symbol*)listget(tsym->subnodes,i);
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if(field->typ.dimset.ndims > 0) {
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fillarray(field->typ.basetype,&field->typ.dimset,0,filler);
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} else
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filllist(field->typ.basetype,sublist);
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}
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con = builddatasublist(sublist);
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break;
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case NC_VLEN:
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sublist = builddatalist(0);
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filllist(tsym->typ.basetype,sublist); /* generate a single instance*/
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con = builddatasublist(sublist);
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break;
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default: PANIC1("fill: unexpected subclass %d",tsym->subclass);
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}
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dlappend(filler,&con);
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}
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static void
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filllist(Symbol* tsym, Datalist* dl)
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{
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int i;
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Datalist* sublist;
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NCConstant con = nullconstant;
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ASSERT(tsym->objectclass == NC_TYPE);
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switch (tsym->subclass) {
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case NC_ENUM: case NC_OPAQUE: case NC_PRIM:
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con.nctype = tsym->typ.typecode;
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nc_getfill(&con);
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dlappend(dl,&con);
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break;
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case NC_COMPOUND:
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sublist = builddatalist(listlength(tsym->subnodes));
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for(i=0;i<listlength(tsym->subnodes);i++) {
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Symbol* field = (Symbol*)listget(tsym->subnodes,i);
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filllist(field->typ.basetype,sublist);
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}
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con = builddatasublist(sublist);
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dlappend(dl,&con);
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break;
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case NC_VLEN:
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sublist = builddatalist(0);
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filllist(tsym->typ.basetype,sublist); /* generate a single instance*/
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con = builddatasublist(sublist);
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dlappend(dl,&con);
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break;
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default: PANIC1("fill: unexpected subclass %d",tsym->subclass);
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}
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}
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static void
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fillarray(Symbol* basetype, Dimset* dimset, int index, Datalist* arraylist)
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{
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int i;
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Symbol* dim = dimset->dimsyms[index];
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unsigned int size = dim->dim.declsize;
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int isunlimited = (size == 0);
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int lastdim = (index == (dimset->ndims - 1));
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int firstdim = (index == 0);
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Datalist* sublist;
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sublist = (firstdim?builddatalist(0):arraylist);
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if(isunlimited) {
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/* do a single entry to satisfy*/
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if(lastdim) {
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filllist(basetype,sublist);
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} else {
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fillarray(basetype->typ.basetype,dimset,index+1,sublist);
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}
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} else { /* bounded*/
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if(lastdim) {
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for(i=0;i<size;i++) filllist(basetype,sublist);
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} else {
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for(i=0;i<size;i++) {
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fillarray(basetype->typ.basetype,dimset,index+1,sublist);
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}
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}
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}
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}
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/*
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* Given primitive netCDF type, return a default fill_value appropriate for
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* that type.
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*/
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void
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nc_getfill(NCConstant* value)
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{
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switch(value->nctype) {
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case NC_CHAR: value->value.charv = NC_FILL_CHAR; break;
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case NC_BYTE: value->value.int8v = NC_FILL_BYTE; break;
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case NC_SHORT: value->value.int16v = NC_FILL_SHORT; break;
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case NC_INT: value->value.int32v = NC_FILL_INT; break;
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case NC_FLOAT: value->value.floatv = NC_FILL_FLOAT; break;
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case NC_DOUBLE: value->value.doublev = NC_FILL_DOUBLE; break;
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case NC_UBYTE: value->value.uint8v = NC_FILL_UBYTE; break;
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case NC_USHORT: value->value.uint16v = NC_FILL_USHORT; break;
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case NC_UINT: value->value.uint32v = NC_FILL_UINT; break;
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case NC_INT64: value->value.int64v = NC_FILL_INT64; break;
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case NC_UINT64: value->value.uint64v = NC_FILL_UINT64; break;
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case NC_STRING:
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value->value.stringv.stringv = nulldup(NC_FILL_STRING);
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value->value.stringv.len = (int)strlen(NC_FILL_STRING);
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/* Exception: if string is null, then make it's length be 1 */
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if(value->value.stringv.len == 0)
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value->value.stringv.len = 1;
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break;
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case NC_OPAQUE:
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value->value.opaquev.len = 2;
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value->value.opaquev.stringv = nulldup("00");
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break;
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default:
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derror("nc_getfill: unrecognized type: %d",value->nctype);
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}
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}
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char*
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nc_dfaltfillname(nc_type nctype)
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{
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switch (nctype) {
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case NC_BYTE: return "NC_FILL_BYTE";
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case NC_CHAR: return "NC_FILL_CHAR";
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case NC_SHORT: return "NC_FILL_SHORT";
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case NC_INT: return "NC_FILL_INT";
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case NC_FLOAT: return "NC_FILL_FLOAT";
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case NC_DOUBLE: return "NC_FILL_DOUBLE";
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case NC_UBYTE: return "NC_FILL_UBYTE";
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case NC_USHORT: return "NC_FILL_USHORT";
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case NC_UINT: return "NC_FILL_UINT";
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case NC_INT64: return "NC_FILL_INT64";
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case NC_UINT64: return "NC_FILL_UINT64";
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case NC_STRING: return "NC_FILL_STRING";
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default: PANIC("unexpected default fill name");
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}
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return NULL;
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}
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