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iexpr

iexpr

Description

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

Library Procedures

[procedure] (parse LOC STRING-OR-PORT) => TREE

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.

[procedure] (tree-empty? TREE) => BOOL

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

[procedure] (tree-level TREE) => INTEGER

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

[procedure] (tree-child TREE) => TREE

Returns the first child of the given tree node.

[procedure] (tree-sibling TREE) => TREE

Returns the first sibling of the given tree node.

[procedure] (tree->list TREE) => LIST

Converts the given tree to a list structure.

Requires

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/>.