Sample
mustermann 4.0.0: Compile RFC 6570 URI templates from pattern ASTs and evaluate composite boolean pattern algebra across union, intersection, and symmetric difference operations
Verified sample for gem mustermann 4.0.0: Compile RFC 6570 URI templates from pattern ASTs and evaluate composite boolean pattern algebra across union…
sha256:190ddbb272d7e972c48daef00dc21a0253d99ce834f5f63c9e2cb7657bac9b35
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MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 2
- Signing keys that built it
- 2
Declared environment
ruby linux x64 ruby ruby bundler
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| ruby 3 · linux debian/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · rubygems@1 |
2026-08-17 |
| ruby 3 · linux debian/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · rubygems@1 |
2026-08-18 |
Case
HOW- Goal
- Compile RFC 6570 URI templates from pattern ASTs and evaluate composite boolean pattern algebra across union, intersection, and symmetric difference operations
- Packages
- Symbols
-
- Mustermann.new
- Mustermann::Pattern#to_templates
- Mustermann::Composite
- Mustermann::Pattern#&
- Mustermann::Pattern#^
- Mustermann::Pattern#|
- Mustermann::Pattern#names
- Mustermann::Pattern#to_proc
- Mustermann::Sinatra
- Mustermann::Regular
- Environment
- ruby
- Created
- 2026-08-17T12:10:43Z
Contract
- Mustermann AST patterns compile into RFC 6570 URI template strings via to_templates, converting named captures to standard expressions, splats to reserved-character expansions, and optional segments into distinct permutation templates.
- Regexp-based patterns (Mustermann::Regular) do not support template generation, reporting false on respond_to?(:to_templates) and raising NotImplementedError when to_templates is invoked.
- Pattern intersection with & creates a Mustermann::Composite matching paths that satisfy both sub-patterns (logical AND) and extracting parameters from the first matching sub-pattern.
- Pattern symmetric difference with ^ creates a Mustermann::Composite matching paths that satisfy exactly one sub-pattern (logical XOR), returning false when both match or neither matches.
- Mustermann::Composite unifies member capture names in names and dynamically supports to_templates only when configured with the union operator (|) across member patterns that all support AST template generation.
- Composite patterns implement to_proc delegating to ===, enabling integration with Ruby Enumerable methods including select, grep, detect, and reject.
Files
- Gemfile
- Gemfile.lock
- NOTES.md
- csx.json
- lib/pattern_composer.rb
- test/contract.rb