Sample
Parse C99 source code into a typed AST using CParser, traverse nodes with NodeVisitor, format back with CGenerator, and handle syntax errors with ParseError in pycparser 3.0.
sha256:3c5ca6f4d0fbebc7e9f426b8ff85289533a86a2af0b05839306773534fb7b397
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 code into a typed AST using CParser, traverse nodes with NodeVisitor, format back with CGenerator, and handle syntax errors with ParseError in pycparser 3.0. HOW
- Packages
-
pycparser 3.0
- Environment
- python
- Created
- 2026-08-17T19:18:44Z
Contract
- CParser().parse parses C99 source declarations into a typed FileAST hierarchy preserving source coordinates and declaration types.
- Subclassing c_ast.NodeVisitor with visit_<NodeType> methods traverses AST nodes and collects syntactic constructs like function definitions and binary operators.
- CGenerator().visit formats an AST tree back into valid C source text.
- Parsing malformed C syntax raises c_parser.ParseError with descriptive failure diagnostics.
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