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/* Copyright 2009, UCAR/Unidata and OPeNDAP, Inc.
See the COPYRIGHT file for more information. */
#ifndef OCCONSTRAINTS_H
#define OCCONSTRAINTS_H 1
/*! Specifies an OCslice. */
typedef struct OCslice {
size_t first;
size_t count;
size_t stride;
size_t stop; /* == first + count */
size_t declsize; /* from defining dimension, if any.*/
} OCslice;
/*! Specifies a form of path where each element can have a set of associated indices */
typedef struct OCpath {
NClist* names;
NClist* indexsets; /* oclist<oclist<Slice>> */
} OCpath;
/*! Specifies a ProjectionClause. */
typedef struct OCprojectionclause {
char* target; /* "variable name" as mentioned in the projection */
NClist* indexsets; /* oclist<oclist<OCslice>> */
struct OCnode* node; /* node with name matching target, if any. */
int gridconstraint; /* used only for testing purposes */
} OCprojectionclause;
/*! Selection is the node type for selection expression trees */
typedef struct OCselectionclause {
int op;
char* value;
struct OCselectionclause* lhs;
NClist* rhs;
} OCselectionclause;
#endif /*OCCONSTRAINTS_H*/
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