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General Information

 o Eli: Translator Construction Made Easy
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 o Quick Reference Card
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 o Tutorial on Name Analysis
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 o Eli library routines
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 o Lexical analysis specification
 o Syntactic Analysis Manual
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Tools

 o LIGA Control Language
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 o FunnelWeb User's Manual

 o Pattern-based Text Generator
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New Features of Eli Version 4.5

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New LIGA front-end

The front-end of the Liga attribute evaluator generator has been re-implemented. The main changes are:

  • Old-style terminal attribution which had already been marked "outdated" in the previous Eli versions has now been disabled. This means that specifications like
    ATTR c: int;
    
    RULE p: R ::= X COMPUTE
      R.c = X.c;
    END;
    
    

    where X is a terminal symbol now lead to an error message:

    "ERROR:  ERROR: A terminal has no attributes"
    
    
    

  • The key word NONTERM is no longer supported. It should be replaced by SYMBOL.

  • Improved error messages, e.g.

    "ERROR: Symbol does neither occur in syntax nor in symbol attribution"
    

    becomes

    "ERROR: Symbol does not occur in rule or definition: IddDefScope"
    

  • New protocol feature of the new liga frontend. This protocol provides information about the compound liga input specification:

    • tree and class symbols, their attributes and their inheritance relation
    • rule attributes
    • remote access constructs INCLUDING, CONSTITUENT, and CONSTITUENTS
    • inheritance of computations

    Invoke the liga frontend protocol generator by:

       <yourspec>:feInfo:viewlist
    


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