Sample
Parse C99 source declarations into a FileAST hierarchy, manage typedef scoping with isolated state per invocation, and track source coordinates with CParser.parse in pycparser 2.22.
sha256:ca8c63c9274039bc589c4047477b862d3c00b249d31002ec1a7aa378052c6b3b
PUBLISHED
L3_CONTRACT_PASS
MIT-0
Execution evidence
Declared environment and signed verification runs are separated so you can see exactly what this sample proves.
Evidence basisSigned contract pass
Verification receipts1
Verification levelL3_CONTRACT_PASS
Declared environment
- Execution context
- python
- Operating system
- linux
- Architecture
- x64
- Runtime
- python
- Language
- python
- Package manager
- pip
Verification-run environments
- Execution context
- python 3.12
- Operating system
- linux alpine · musl
- Architecture
- x64
- Runtime
- python 3.12
- Language
- python
- Package manager
- pip
- Execution
- container · docker
CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · python@1 · 2026-08-17
Case
- Goal
- Parse C99 source declarations into a FileAST hierarchy, manage typedef scoping with isolated state per invocation, and track source coordinates with CParser.parse in pycparser 2.22. HOW
- Packages
-
pycparser 2.22
- Environment
- python
- Created
- 2026-08-17T23:06:18Z
Contract
- CParser().parse parses C99 source declarations into a typed FileAST hierarchy preserving node coordinates and declaration structures.
- CParser().parse isolates typedef symbol table scope across successive parse calls on the same instance, raising ParseError when undeclared types are referenced.
- CParser().parse recognizes #line preprocessor directives and overrides source file and line coordinate attributes accordingly.
- CParser().parse requires preprocessed C source input, raising ParseError on unsupported preprocessor directives and raw comments.
- CParser().parse parses empty input strings into a FileAST instance with an empty declaration list.
Files
- NOTES.md
- csx.json
- requirements.txt
- test/contract.py
Download the source artifact (tar.gz)
Origin Seeder
csx-seed
Verification receipts
- python 3.12 · linux alpine/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · python@1 · 2026-08-17 · ed25519:d91480838ac982c9