cli/gda_expr_cli Design

Responsibility

Filesystem and rendering adapter for GDA .decTest execution.

Data Flow

It expands inputs, reads each source once, delegates parsing/execution to frontend/gda_expr, then renders text or schema-versioned JSON.

Algorithms And Invariants

Filtering and sharding are deterministic; strict mode fails on unsupported rows, while diagnostics stay classified separately.

Failure And Effects

File reads, argument handling, JSON rendering, and exit status are effects isolated from the pure frontend.

Implementation Trade-offs

Keeping transport separate makes parser tests deterministic, at the cost of a small adapter API used only by the main CLI.

Stability

The package is maintained as repository infrastructure. Generated declarations may change with the runners and do not promise downstream compatibility.