Package polyglot.ext.pao

"Primitives as Objects" (PAO) extension.

See:
Description

Class Summary

ExtensionInfo	Extension information for the PAO extension.
Topics	Additional report topics for the PAO extension.
Version	Version information for PAO extension

Package polyglot.ext.pao Description

"Primitives as Objects" (PAO) extension. Primitive types (e.g., int, float, etc.) may be used as subtypes of Object.

To implement this functionality, this extension has the following key components:

• The package polyglot.ext.pao.parse modifies the grammar to allow primitive types to occur in instanceof expressions.
• The package polyglot.ext.pao.ast provides factories to create appropriate extension and delegate objects for the AST nodes.
• The package polyglot.ext.pao.extension provides appropriate extension and delegate objects for the AST nodes.
• The package polyglot.ext.pao.types modifies the type system to allow primitives to be used as subtypes of Object.
• The package polyglot.ext.pao.visit adds a new pass polyglot.ext.pao.visit.PaoBoxer to add boxing and unboxing code to allow primitive values to be treated as objects at runtime.
• The package polyglot.ext.pao.runtime provides the runtime support classes needed by PAO. These classes are used at runtime to box primitive values. These classes must be on the classpath when running programs compiled with the PAO compiler.
• Finally, the class ExtensionInfo provides information about this extension to the Polyglot compiler.