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Diffstat (limited to 'teal-src/util/jsonschema.tl')
| -rw-r--r-- | teal-src/util/jsonschema.tl | 374 |
1 files changed, 0 insertions, 374 deletions
diff --git a/teal-src/util/jsonschema.tl b/teal-src/util/jsonschema.tl deleted file mode 100644 index 160c164c..00000000 --- a/teal-src/util/jsonschema.tl +++ /dev/null @@ -1,374 +0,0 @@ --- Copyright (C) 2021 Kim Alvefur --- --- This project is MIT/X11 licensed. Please see the --- COPYING file in the source package for more information. --- --- Based on --- https://json-schema.org/draft/2020-12/json-schema-core.html --- https://json-schema.org/draft/2020-12/json-schema-validation.html --- - -local json = require"util.json" -local null = json.null; - -local pointer = require "util.jsonpointer" - -local type json_type_name = json.json_type_name - --- json_type_name here is non-standard -local type schema_t = boolean | json_schema_object - -local record json_schema_object - type json_type_name = json.json_type_name - type schema_object = json_schema_object - - type : json_type_name | { json_type_name } - enum : { any } - const : any - - allOf : { schema_t } - anyOf : { schema_t } - oneOf : { schema_t } - - ["not"] : schema_t - ["if"] : schema_t - ["then"] : schema_t - ["else"] : schema_t - - ["$ref"] : string - - -- numbers - multipleOf : number - maximum : number - exclusiveMaximum : number - minimum : number - exclusiveMinimum : number - - -- strings - maxLength : integer - minLength : integer - pattern : string -- NYI - format : string - - -- arrays - prefixItems : { schema_t } - items : schema_t - contains : schema_t - maxItems : integer - minItems : integer - uniqueItems : boolean - maxContains : integer -- NYI - minContains : integer -- NYI - - -- objects - properties : { string : schema_t } - maxProperties : integer -- NYI - minProperties : integer -- NYI - required : { string } - dependentRequired : { string : { string } } - additionalProperties: schema_t - patternProperties: schema_t -- NYI - propertyNames : schema_t - - -- xml - record xml_t - name : string - namespace : string - prefix : string - attribute : boolean - wrapped : boolean - - -- nonstantard, maybe in the future - text : boolean - x_name_is_value : boolean - x_single_attribute : string - end - - xml : xml_t - - -- descriptive - title : string - description : string - deprecated : boolean - readOnly : boolean - writeOnly : boolean - - -- methods - validate : function ( schema_t, any, json_schema_object ) : boolean -end - --- TODO validator function per schema property - -local function simple_validate(schema : json_type_name | { json_type_name }, data : any) : boolean - if schema == nil then - return true - elseif schema == "object" and data is table then - return type(data) == "table" and (next(data)==nil or type((next(data, nil))) == "string") - elseif schema == "array" and data is table then - return type(data) == "table" and (next(data)==nil or type((next(data, nil))) == "number") - elseif schema == "integer" then - return math.type(data) == schema - elseif schema == "null" then - return data == null - elseif schema is { json_type_name } then - for _, one in ipairs(schema as { json_type_name }) do - if simple_validate(one, data) then - return true - end - end - return false - else - return type(data) == schema - end -end - -local complex_validate : function ( json_schema_object, any, json_schema_object ) : boolean - -local function validate (schema : schema_t, data : any, root : json_schema_object) : boolean - if schema is boolean then - return schema - else - return complex_validate(schema, data, root) - end -end - -function complex_validate (schema : json_schema_object, data : any, root : json_schema_object) : boolean - - if root == nil then - root = schema - end - - if schema["$ref"] and schema["$ref"]:sub(1,1) == "#" then - local referenced = pointer.resolve(root as table, schema["$ref"]:sub(2)) as schema_t - if referenced ~= nil and referenced ~= root and referenced ~= schema then - if not validate(referenced, data, root) then - return false; - end - end - end - - if not simple_validate(schema.type, data) then - return false; - end - - if schema.type == "object" then - if data is table then - -- just check that there the keys are all strings - for k in pairs(data) do - if not k is string then - return false - end - end - end - end - - if schema.type == "array" then - if data is table then - -- just check that there the keys are all numbers - for i in pairs(data) do - if not i is integer then - return false - end - end - end - end - - if schema["enum"] ~= nil then - local match = false - for _, v in ipairs(schema["enum"]) do - if v == data then - -- FIXME supposed to do deep-compare - match = true - break - end - end - if not match then - return false - end - end - - -- XXX this is measured in byte, while JSON measures in ... bork - -- TODO use utf8.len? - if data is string then - if schema.maxLength and #data > schema.maxLength then - return false - end - if schema.minLength and #data < schema.minLength then - return false - end - end - - if data is number then - if schema.multipleOf and (data == 0 or data % schema.multipleOf ~= 0) then - return false - end - - if schema.maximum and not ( data <= schema.maximum ) then - return false - end - - if schema.exclusiveMaximum and not ( data < schema.exclusiveMaximum ) then - return false - end - - if schema.minimum and not ( data >= schema.minimum ) then - return false - end - - if schema.exclusiveMinimum and not ( data > schema.exclusiveMinimum ) then - return false - end - end - - if schema.allOf then - for _, sub in ipairs(schema.allOf) do - if not validate(sub, data, root) then - return false - end - end - end - - if schema.oneOf then - local valid = 0 - for _, sub in ipairs(schema.oneOf) do - if validate(sub, data, root) then - valid = valid + 1 - end - end - if valid ~= 1 then - return false - end - end - - if schema.anyOf then - local match = false - for _, sub in ipairs(schema.anyOf) do - if validate(sub, data, root) then - match = true - break - end - end - if not match then - return false - end - end - - if schema["not"] then - if validate(schema["not"], data, root) then - return false - end - end - - if schema["if"] ~= nil then - if validate(schema["if"], data, root) then - if schema["then"] then - return validate(schema["then"], data, root) - end - else - if schema["else"] then - return validate(schema["else"], data, root) - end - end - end - - if schema.const ~= nil and schema.const ~= data then - return false - end - - if data is table then - - if schema.maxItems and #data > schema.maxItems then - return false - end - - if schema.minItems and #data < schema.minItems then - return false - end - - if schema.required then - for _, k in ipairs(schema.required) do - if data[k] == nil then - return false - end - end - end - - if schema.propertyNames ~= nil then - for k in pairs(data) do - if not validate(schema.propertyNames, k, root) then - return false - end - end - end - - if schema.properties then - for k, sub in pairs(schema.properties) do - if data[k] ~= nil and not validate(sub, data[k], root) then - return false - end - end - end - - if schema.additionalProperties ~= nil then - for k, v in pairs(data) do - if schema.properties == nil or schema.properties[k as string] == nil then - if not validate(schema.additionalProperties, v, root) then - return false - end - end - end - end - - if schema.uniqueItems then - -- only works for scalars, would need to deep-compare for objects/arrays/tables - local values : { any : boolean } = {} - for _, v in pairs(data) do - if values[v] then - return false - end - values[v] = true - end - end - - local p = 0 - if schema.prefixItems ~= nil then - for i, s in ipairs(schema.prefixItems) do - if data[i] == nil then - break - elseif validate(s, data[i], root) then - p = i - else - return false - end - end - end - - if schema.items ~= nil then - for i = p+1, #data do - if not validate(schema.items, data[i], root) then - return false - end - end - end - - if schema.contains ~= nil then - local found = false - for i = 1, #data do - if validate(schema.contains, data[i], root) then - found = true - break - end - end - if not found then - return false - end - end - end - - return true; -end - - -json_schema_object.validate = validate; - -return json_schema_object; |