chickadee » iexpr

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iexpr

Description

The iexpr library contains a procedure for parsing of I-expressions as described in SRFI-49.

Library Procedures

parse LOC STRING-OR-PORTprocedure

Parses I-expression text and returns a tree object with the parsed content. LOC is a symbol that indicates the name of the current entity being parsed. It is used for error reporting.

tree-empty? TREEprocedure

Returns #t is the given tree object is empty, #f otherwise.

tree-level TREEprocedure

Returns the indentation level of the text contained in the given tree node.

tree-child TREEprocedure

Returns the first child of the given tree node.

tree-sibling TREEprocedure

Returns the first sibling of the given tree node.

tree->list TREEprocedure

Converts the given tree to a list structure.

Requires

• make
• silex
• lalr
• datatype

Version History

• 1.9 Added srfi-49 test case
• 1.8 Allow line breaks as group separators
• 1.6 Bug fixes, allow ; as comment character, additional tests
• 1.5 Using make egg instead of setup-api for make macro
• 1.2 Updated unit tests
• 1.1 Various fixes to handle boundary cases: empty input stream, 1-character words and others
• 1.0 Initial Release

License

 Copyright 2010-2012 Ivan Raikov and the Okinawa Institute of Science and Technology.

 This program is free software: you can redistribute it and/or
 modify it under the terms of the GNU General Public License as
 published by the Free Software Foundation, either version 3 of the
 License, or (at your option) any later version.

 This program is distributed in the hope that it will be useful, but
 WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 General Public License for more details.

 A full copy of the GPL license can be found at
 <http://www.gnu.org/licenses/>.