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Package jay.yydebug

jay/yydebug supports tracing and animation for a Java-based parser generated by jay.

See: Description

Package jay.yydebug Description

jay/yydebug supports tracing and animation for a Java-based parser generated by jay.

Usage

An implementation of yyDebug is passed as an additional argument to yyparse() to trace a Java-based parser generated by jay with option -t set.

yyDebugAdapter produces one-line messages, by default to standard output. The messages are designed to be filtered by a program such as grep.

yyAnim provides an animation of the parsing process:

Terminal symbols are displayed in the token field as they are read by the parser, state/value stack activities are shown in the stack panel, and a running commentary appears in the comments area. The text area at the bottom simulates a terminal if the flags 1 for standard input and/or 2 for standard and diagnostic output are passed to yyAnim.

The parser is stopped if there is an activity in an area with an activated checkbutton. continue will continue the parsing activities.

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Version:
1.1.0, August 2004.
Author:
Axel T. Schreiner.
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