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Eli: Translator Construction Made Easy

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 Scope Graphs
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
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Missing Lido Computations

From the reference manual:

There must be exactly one attribute computation for each synthesized attribute of the left-hand side nonterminal and for each inherited attribute of each right-hand side nonterminal.

Typical Error Situations

  • Forgetting to specify an attribute computation
  • Misspelling the attribute name in an attribute computations
  • Misspelling the attribute name in an attribute use
Example: 

   ATTR	i : int;
   ...

   RULE r2 : X ::= '(' X '.' X ')'
   COMPUTE somethingelse();
   END;

   RULE r3 : X ::= 'x'
   COMPUTE  something();
            X.i = 1;
   END;

==> ERROR: computation of X[1].i is missing in RULE r2

Lido's showFe protocol lists all attribibute/symbol associations.

Back to Typical Eli Errors