SdfPathExpression Class Reference

#include <pathExpression.h>

Detailed Description

Objects of this class represent a logical expression syntax tree consisting of SdfPath matching patterns (with optionally embedded predicate expressions) joined by the set-algebraic operators '+' (union), '&' (intersection), '-' (difference), '~' (complement) and an implied-union operator represented by two subexpressions joined by whitespace.

An SdfPathExpression can be constructed from a string, which will parse the string into an expression object. The syntax for an expression is as follows:

The fundamental building blocks are path patterns and expression references. A path pattern is similar to an SdfPath, but it may contain glob-style wild-card characters, embedded brace-enclosed predicate expressions (see SdfPredicateExpression) and '//' elements indicating arbitrary levels of prim hierarchy. For example, consider "/foo//bar

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The documentation for this class was generated from the following file:

• pxr/usd/sdf/pathExpression.h