Sample
pycparser 3.0: 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.
Verified sample for pypi pycparser 3.0: Parse C99 source code into a typed AST using CParser, traverse nodes with NodeVisitor, format back with CGenerator…
sha256:3c5ca6f4d0fbebc7e9f426b8ff85289533a86a2af0b05839306773534fb7b397
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
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
python linux x64 python python pip
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| python 3.12 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1 |
2026-08-17 |
| python 3.12 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1 |
2026-08-18 |
Case
HOW- 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.
- Packages
- Symbols
-
- pycparser.c_parser.CParser.parse
- pycparser.c_ast.NodeVisitor.visit
- pycparser.c_generator.CGenerator.visit
- pycparser.c_parser.ParseError
- 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