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General Information

 o Eli: Translator Construction Made Easy
 o Global Index
 o Frequently Asked Questions
 o Typical Eli Usage Errors

Tutorials

 o Quick Reference Card
 o Guide For new Eli Users
 o Release Notes of Eli
 o Tutorial on Name Analysis
 o Tutorial on Type Analysis
 o Typical Eli Usage Errors

Reference Manuals

 o User Interface
 o Eli products and parameters
 o LIDO Reference Manual
 o Typical Eli Usage Errors

Libraries

 o Eli library routines
 o Specification Module Library

Translation Tasks

 o Lexical analysis specification
 o Syntactic Analysis Manual
 o Computation in Trees

Tools

 o LIGA Control Language
 o Debugging Information for LIDO
 o Graphical ORder TOol

 o FunnelWeb User's Manual

 o Pattern-based Text Generator
 o Property Definition Language
 o Operator Identification Language
 o Tree Grammar Specification Language
 o Command Line Processing
 o COLA Options Reference Manual

 o Generating Unparsing Code

 o Monitoring a Processor's Execution

Administration

 o System Administration Guide

Mail Home

New Features of Eli Version 4.1

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Abstract Syntax Tree Unparsing

Parsing is the process of constructing a tree from a string of characters; unparsing is the reverse: constructing a string of characters from a tree. An Eli user can specify an arbitrary unparser by means of a combination of attribute computations and PTG (see Top of PTG: Pattern-Based Text Generator) templates. For a large tree, this can be a tedious process.

Given a specification of the set of rules defining the tree, Eli can now generate the combinations of attribute computations and PTG templates needed to produce certain common unparsings. This information can be extracted and modified, or it can be automatically merged with the remainder of the specification to produce the output routines for the generated processor.

See Top of Abstract Syntax Tree Unparsing, for details.


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