From 1d055261b4144dbf86b2658437015b15d4dd9bff Mon Sep 17 00:00:00 2001
From: Richard <q@1bpm.net>
Date: Sun, 4 Sep 2022 00:32:56 +0100
Subject: initial

---
 include/jsoncons_ext/jsonschema/json_validator.hpp | 120 +++++++++++++++++++++
 1 file changed, 120 insertions(+)
 create mode 100644 include/jsoncons_ext/jsonschema/json_validator.hpp

(limited to 'include/jsoncons_ext/jsonschema/json_validator.hpp')

diff --git a/include/jsoncons_ext/jsonschema/json_validator.hpp b/include/jsoncons_ext/jsonschema/json_validator.hpp
new file mode 100644
index 0000000..87bec58
--- /dev/null
+++ b/include/jsoncons_ext/jsonschema/json_validator.hpp
@@ -0,0 +1,120 @@
+// Copyright 2020 Daniel Parker
+// Distributed under the Boost license, Version 1.0.
+// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+// See https://github.com/danielaparker/jsoncons for latest version
+
+#ifndef JSONCONS_JSONSCHEMA_JSON_VALIDATOR_HPP
+#define JSONCONS_JSONSCHEMA_JSON_VALIDATOR_HPP
+
+#include <jsoncons/config/jsoncons_config.hpp>
+#include <jsoncons/uri.hpp>
+#include <jsoncons/json.hpp>
+#include <jsoncons_ext/jsonpointer/jsonpointer.hpp>
+#include <jsoncons_ext/jsonschema/keyword_validator_factory.hpp>
+#include <cassert>
+#include <set>
+#include <sstream>
+#include <iostream>
+#include <cassert>
+#include <functional>
+
+namespace jsoncons {
+namespace jsonschema {
+
+    class throwing_error_reporter : public error_reporter
+    {
+        void do_error(const validation_output& o) override
+        {
+            JSONCONS_THROW(validation_error(o.message()));
+        }
+    };
+
+    class fail_early_reporter : public error_reporter
+    {
+        void do_error(const validation_output&) override
+        {
+        }
+    public:
+        fail_early_reporter()
+            : error_reporter(true)
+        {
+        }
+    };
+
+    using error_reporter_t = std::function<void(const validation_output& o)>;
+
+    struct error_reporter_adaptor : public error_reporter
+    {
+        error_reporter_t reporter_;
+
+        error_reporter_adaptor(const error_reporter_t& reporter)
+            : reporter_(reporter)
+        {
+        }
+    private:
+        void do_error(const validation_output& e) override
+        {
+            reporter_(e);
+        }
+    };
+
+    template <class Json>
+    class json_validator
+    {
+        std::shared_ptr<json_schema<Json>> root_;
+
+    public:
+        json_validator(std::shared_ptr<json_schema<Json>> root)
+            : root_(root)
+        {
+        }
+
+        json_validator(json_validator &&) = default;
+        json_validator &operator=(json_validator &&) = default;
+
+        json_validator(json_validator const &) = delete;
+        json_validator &operator=(json_validator const &) = delete;
+
+        ~json_validator() = default;
+
+        // Validate input JSON against a JSON Schema with a default throwing error reporter
+        Json validate(const Json& instance) const
+        {
+            throwing_error_reporter reporter;
+            jsonpointer::json_pointer instance_location("#");
+            Json patch(json_array_arg);
+
+            root_->validate(instance, instance_location, reporter, patch);
+            return patch;
+        }
+
+        // Validate input JSON against a JSON Schema 
+        bool is_valid(const Json& instance) const
+        {
+            fail_early_reporter reporter;
+            jsonpointer::json_pointer instance_location("#");
+            Json patch(json_array_arg);
+
+            root_->validate(instance, instance_location, reporter, patch);
+            return reporter.error_count() == 0;
+        }
+
+        // Validate input JSON against a JSON Schema with a provided error reporter
+        template <class Reporter>
+        typename std::enable_if<type_traits::is_unary_function_object_exact<Reporter,void,validation_output>::value,Json>::type
+        validate(const Json& instance, const Reporter& reporter) const
+        {
+            jsonpointer::json_pointer instance_location("#");
+            Json patch(json_array_arg);
+
+            error_reporter_adaptor adaptor(reporter);
+            root_->validate(instance, instance_location, adaptor, patch);
+            return patch;
+        }
+    };
+
+} // namespace jsonschema
+} // namespace jsoncons
+
+#endif // JSONCONS_JSONSCHEMA_JSON_VALIDATOR_HPP
-- 
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