odin-jsonschema

commit e195d6ba7384d4195e66307dfec66d27084b6f02
parent a3c881c467613b5b8d0fcc8e0ad124a18ea8c62c
Author: Jack Mordaunt <jackmordaunt.dev@gmail.com>
Date:   Thu, 23 Jul 2026 09:23:40 -0300

cmd/jschema: add -openapi flag

Optional flag that controls openapi idiom support.

If not supplied, a cheap heuristic check on the document is performed:
if a document contains "openapi" root property then openapi features are
enabled.

The caller always has final say with the cli flag.

Diffstat:
M
src/cmd/jschema/main.odin
 | 
21
+++++++++++++++++++--

1 file changed, 19 insertions(+), 2 deletions(-)
diff --git a/src/cmd/jschema/main.odin b/src/cmd/jschema/main.odin
@@ -51,6 +51,19 @@ run :: proc() -> int {
 			output = arg[len("-o:"):]
 		case strings.has_prefix(arg, "-pkg:"):
 			opts.package_name = arg[len("-pkg:"):]
+		case strings.has_prefix(arg, "-openapi"):
+			rest := arg[len("-openapi"):]
+			switch {
+			case rest == "":
+				opts.openapi = true
+			case rest == ":true":
+				opts.openapi = true
+			case rest == ":false":
+				opts.openapi = false
+			case:
+				fmt.eprintfln("jschema: invalid value for -openapi %q\n%s", arg, USAGE)
+				return 2
+			}
 		case strings.has_prefix(arg, "-root:"):
 			opts.root_name = arg[len("-root:"):]
 		case strings.has_prefix(arg, "-"):
@@ -129,8 +142,12 @@ report :: proc(err: jschema.Error) {
 	}
 }
 
-USAGE :: `usage: jschema [schema.json] [-o:output.odin] [-pkg:name] [-root:name]
+USAGE :: `usage: jschema [schema.json] [-o:output.odin] [-pkg:name] [-root:name] [-openapi[:true|:false]]
 
 Generates Odin type declarations from a JSON Schema (draft-07 or 2020-12).
 Reads from stdin when no schema path is given; writes to stdout when -o is
-not given.`
+not given.
+
+OpenAPI idioms (if/then/else lowering, Or_Reference($T) generic union) are
+auto-detected from a top-level "openapi" property. -openapi forces the
+mode on; -openapi:false forces it off.`