TR-CORE-GRAMMAR / Teal / Review draft

Grammar and source recovery

Terminology revised · September 12 evidence

Later individual Teal rerun. The reported execution status is historical and is not a new test result.

TEAL LIBRARY RERUN  |  12 SEPTEMBER 2026  |  Michael Patrick Bangel
6
TEAL-RERUN-03-B001 | RELATED_EXECUTION_EVIDENCE_AVAILABLE
TR-CORE-GRAMMAR / Grammar and source recovery
IF
Strict source reaches the compiler.
HOW
Tokenize and parse the frozen grammar, retain source spans and recover semantics before lowering.
Distinguish legacy and general source profiles.
THEN
Return a typed source model or source-located diagnostics; parsing success does not authorize execution.
CURRENT EVIDENCE
Fresh related language/paper/water checks are in the evidence ledger. The test count is suite evidence, not
proof of every branch in this requirement.
REMAINING REQUIREMENT
Use the source and recorded case evidence to close remaining per-branch, native-host and full-contract coverage gaps.
SOURCE REFERENCES
bangel:language/python/src/bangel/frontend/lexer.py; bangel:language/python/src/bangel/frontend/semantics.py;
bangel:language/python/src/bangel/frontend/parser.py; associated-core:reference/src/bangel/frontend/lexer.py;
associated-core:reference/src/bangel/frontend/semantics.py; associated-core:reference/src/bangel/frontend/parser.py

Publication is pending owner review. White papers are excluded.