encoding/jsonschema: add keyword TODOs

This adds entries for all the known JSON Schema keywords
to the constraints map. This will enable us to distinguish unknown
keywords from unimplemented keywords when implementing
different strictness modes. It also acts as a handy reference
for which features are unimplemented as yet.

Signed-off-by: Roger Peppe <[email protected]>
Change-Id: I9b2309f92cefaf6152d2ed397af2246e3c9a5aec
Reviewed-on: https://review.gerrithub.io/c/cue-lang/cue/+/1200533
TryBot-Result: CUEcueckoo <[email protected]>
Reviewed-by: Daniel Martí <[email protected]>
Unity-Result: CUE porcuepine <[email protected]>

Author: rogpeppe

encoding/jsonschema/testdata/external/tests/draft2019-09/dependentRequired.json

@@ -10,8 +10,8 @@
 			}
 		},
 		"skip": {
-			"v2": "extract error: unsupported constraint \"dependentRequired\"",
-			"v3": "extract error: unsupported constraint \"dependentRequired\""
+			"v2": "extract error: keyword \"dependentRequired\" not yet implemented",
+			"v3": "extract error: keyword \"dependentRequired\" not yet implemented"
 		},
 		"tests": [
 			{
@@ -97,8 +97,8 @@
 			}
 		},
 		"skip": {
-			"v2": "extract error: unsupported constraint \"dependentRequired\"",
-			"v3": "extract error: unsupported constraint \"dependentRequired\""
+			"v2": "extract error: keyword \"dependentRequired\" not yet implemented",
+			"v3": "extract error: keyword \"dependentRequired\" not yet implemented"
 		},
 		"tests": [
 			{
@@ -144,8 +144,8 @@
 			}
 		},
 		"skip": {
-			"v2": "extract error: unsupported constraint \"dependentRequired\"",
-			"v3": "extract error: unsupported constraint \"dependentRequired\""
+			"v2": "extract error: keyword \"dependentRequired\" not yet implemented",
+			"v3": "extract error: keyword \"dependentRequired\" not yet implemented"
 		},
 		"tests": [
 			{
@@ -233,8 +233,8 @@
 			}
 		},
 		"skip": {
-			"v2": "extract error: unsupported constraint \"dependentRequired\"",
-			"v3": "extract error: unsupported constraint \"dependentRequired\""
+			"v2": "extract error: keyword \"dependentRequired\" not yet implemented",
+			"v3": "extract error: keyword \"dependentRequired\" not yet implemented"
 		},
 		"tests": [
 			{

encoding/jsonschema/testdata/external/tests/draft2019-09/dependentSchemas.json

@@ -17,8 +17,8 @@
 			}
 		},
 		"skip": {
-			"v2": "extract error: unsupported constraint \"dependentSchemas\"",
-			"v3": "extract error: unsupported constraint \"dependentSchemas\""
+			"v2": "extract error: keyword \"dependentSchemas\" not yet implemented",
+			"v3": "extract error: keyword \"dependentSchemas\" not yet implemented"
 		},
 		"tests": [
 			{
@@ -121,8 +121,8 @@
 			}
 		},
 		"skip": {
-			"v2": "extract error: unsupported constraint \"dependentSchemas\"",
-			"v3": "extract error: unsupported constraint \"dependentSchemas\""
+			"v2": "extract error: keyword \"dependentSchemas\" not yet implemented",
+			"v3": "extract error: keyword \"dependentSchemas\" not yet implemented"
 		},
 		"tests": [
 			{
@@ -186,8 +186,8 @@
 			}
 		},
 		"skip": {
-			"v2": "extract error: unsupported constraint \"dependentSchemas\"",
-			"v3": "extract error: unsupported constraint \"dependentSchemas\""
+			"v2": "extract error: keyword \"dependentSchemas\" not yet implemented",
+			"v3": "extract error: keyword \"dependentSchemas\" not yet implemented"
 		},
 		"tests": [
 			{
@@ -259,8 +259,8 @@
 			}
 		},
 		"skip": {
-			"v2": "extract error: unsupported constraint \"dependentSchemas\"",
-			"v3": "extract error: unsupported constraint \"dependentSchemas\""
+			"v2": "extract error: keyword \"dependentSchemas\" not yet implemented",
+			"v3": "extract error: keyword \"dependentSchemas\" not yet implemented"
 		},
 		"tests": [
 			{