feat: add PPI::Plugin system for parse-time extensibility - #437
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Tests verify the plugin API that will allow external code to hook into PPI's parsing pipeline. Covers statement classification, token modification, and feature detection hooks. All behavioral tests are marked TODO and properly fail. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Implements a plugin API that lets external code hook into PPI's parsing pipeline without modifying PPI internals. Plugins are passed via PPI::Document->new(\$src, plugins => [$plugin]) and provide three hooks: - statement_class($token, $parent): override Lexer statement classification - modify_token($token): inspect/annotate tokens during tokenization - feature_includes($include): detect custom feature-enabling pragmas Closes #23 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This was referenced Apr 27, 2026
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Summary
Implements a formal plugin API that lets external code hook into PPI's parsing
pipeline without modifying PPI internals. This addresses the long-standing
feature request for non-standard syntax extensions support (Devel::Declare,
custom keywords, etc.).
Fixes #23
Changes
PPI::Pluginbase class with three hooks:statement_class,modify_token,feature_includesPPI::Document->new(\$src, plugins => [$plugin])propagates plugins to Lexer and Tokenizerstatement_classbefore its own classification logic (first plugin to return wins)modify_tokenon every finalized token (all plugins called)Statement::Include::feature_modscallsfeature_includeson plugins before built-in detectionTest plan
t/ppi_plugin.tcovers all three hook types with concrete plugin subclassesGenerated by Kōan /fix
Quality Report
Changes: 7 files changed, 290 insertions(+)
Code scan: clean
Tests: skipped
Branch hygiene: clean
Generated by Kōan post-mission quality pipeline