kcl-lang / kcl-go / 33302352720

29%

push

github

feat(gen): translate JSON Schema if/then/else into KCL check statements (#584)

feat(gen): translate JSON Schema if/then/else into KCL check statements (fixes #1876)

The vendored jsonschema package supports if/then/else as a draft-2019-09
keyword but the KCL generator emitted a warning and dropped the constraints.
This change collapses each of the three subschemas into a single inline
boolean expression joined with `and`, then renders them as:

    <then-expr> if <if-expr>
    <else-expr> if not (<if-expr>)

Each expression can descend into the subschema's `properties` so the
condition may reference individual fields of the surrounding schema
(e.g. `currency == "JPY"`). When a referenced field is optional in the
parent schema, the template ANDs a truthy guard (`and <field>`) into the
check so the comparison is short-circuited instead of evaluating against
an undefined value.

The Type keyword is intentionally not translated inside the if/then/else
sub-expression: the property already has a concrete KCL type from the
surrounding schema declaration, so a runtime typeof check would either
be redundant (typed fields) or trigger on int literals vs float fields.
Dropping the typeof guard avoids spurious check failures while still
honouring every other scalar constraint keyword.

Co-authored-by: timi <timi@anonymous.local>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

107 of 143 new or added lines in 2 files covered. (74.83%)

4662 of 16250 relevant lines covered (28.69%)

1.97 hits per line