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The ActionScript target closely follows the Java target. The API and runtime behavior are consistent to the extent possible.
See this Example for a working tree-walking grammer.
Please send bug reports, feedback, patches to me or the antlr-interest mailing list.
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The runtime generates ActionScript 3 code designed to work with Flex version 2 or higher from Adobe. The runtime binary libraries are all compiled with the latest Flex 3 SDK.
To use generated code, you'll need to include ActionScript runtime package antlr3.swc in your library path. There are no other dependencies beyond the standard Flex libraries.
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