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class/test - Test classes

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Synopsis
Description
Error Handling
Examples
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class/test ![object], class, <, class ... >

Tests a node on the nexus identified by the object register for a given list of classes. The class argument is a register or index containing either the text name of the class or a pointer to a class definition returned by the class/load instruction.

Each class argument will result in a new value being written to the SCMP and SFLG registers. If the class is assigned to the object, the result will be PSCMP_EQUAL, otherwise it will be PSCMP_NOTEQUAL.

A runtime error will occur if a register is of the wrong type or if a named class or object could not be found.

class/test P0, [psModule], [psFunction]
	Tests two classes against the node pointed to in register P0. The SCMP register will contain the result of the last test (psFunction) while the lowermost 2 bits of the SFLG register will tell you whether either classes are assigned.

pal_commands(5), pal_registers(5), pal_indices(5), class_load(5), attr_test(5),
PROSE Assembly Language at prose.sourceforge.net.

Copyright (c) 2002-2008 Mark R. Bannister <cambridge@users.sourceforge.net>.

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