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1467 lines
47 KiB
C++
1467 lines
47 KiB
C++
/**
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* Copyright (c) 2018, Timothy Stack
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of Timothy Stack nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @file yajlpp_def.hh
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*/
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#ifndef yajlpp_def_hh
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#define yajlpp_def_hh
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#include <chrono>
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#include "config.h"
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#include "mapbox/variant.hpp"
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#include "relative_time.hh"
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#include "yajlpp.hh"
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#define FOR_FIELD(T, FIELD) for_field<T, decltype(T ::FIELD), &T ::FIELD>()
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inline intern_string_t&
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assign(intern_string_t& lhs, const string_fragment& rhs)
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{
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lhs = intern_string::lookup(rhs.data(), rhs.length());
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return lhs;
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}
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inline std::string&
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assign(std::string& lhs, const string_fragment& rhs)
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{
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lhs.assign(rhs.data(), rhs.length());
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return lhs;
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}
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template<template<typename...> class Container>
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inline Container<std::string>&
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assign(Container<std::string>& lhs, const string_fragment& rhs)
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{
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lhs.emplace_back(rhs.data(), rhs.length());
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return lhs;
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}
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struct json_null_t {
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bool operator==(const json_null_t& other) const { return true; }
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};
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using json_any_t
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= mapbox::util::variant<json_null_t, bool, int64_t, double, std::string>;
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struct json_path_container;
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struct json_path_handler : public json_path_handler_base {
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template<typename P>
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json_path_handler(P path, int (*null_func)(yajlpp_parse_context*))
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: json_path_handler_base(path)
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{
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this->jph_callbacks.yajl_null = (int (*)(void*)) null_func;
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}
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template<typename P>
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json_path_handler(P path, int (*bool_func)(yajlpp_parse_context*, int))
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: json_path_handler_base(path)
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{
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this->jph_callbacks.yajl_boolean = (int (*)(void*, int)) bool_func;
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}
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template<typename P>
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json_path_handler(P path, int (*int_func)(yajlpp_parse_context*, long long))
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: json_path_handler_base(path)
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{
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this->jph_callbacks.yajl_integer = (int (*)(void*, long long)) int_func;
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}
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template<typename P>
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json_path_handler(P path, int (*double_func)(yajlpp_parse_context*, double))
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: json_path_handler_base(path)
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{
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this->jph_callbacks.yajl_double = (int (*)(void*, double)) double_func;
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}
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template<typename P>
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json_path_handler(P path) : json_path_handler_base(path)
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{
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}
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template<typename P>
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json_path_handler(P path,
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int (*str_func)(yajlpp_parse_context*,
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const unsigned char*,
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size_t))
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: json_path_handler_base(path)
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{
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this->jph_callbacks.yajl_string
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= (int (*)(void*, const unsigned char*, size_t)) str_func;
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}
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json_path_handler(const std::string& path,
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const std::shared_ptr<const lnav::pcre2pp::code>& re)
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: json_path_handler_base(path, re)
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{
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}
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json_path_handler& add_cb(int (*null_func)(yajlpp_parse_context*))
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{
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this->jph_callbacks.yajl_null = (int (*)(void*)) null_func;
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return *this;
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}
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json_path_handler& add_cb(int (*bool_func)(yajlpp_parse_context*, int))
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{
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this->jph_callbacks.yajl_boolean = (int (*)(void*, int)) bool_func;
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return *this;
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}
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json_path_handler& add_cb(int (*int_func)(yajlpp_parse_context*, long long))
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{
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this->jph_callbacks.yajl_integer = (int (*)(void*, long long)) int_func;
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return *this;
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}
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json_path_handler& add_cb(int (*double_func)(yajlpp_parse_context*, double))
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{
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this->jph_callbacks.yajl_double = (int (*)(void*, double)) double_func;
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return *this;
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}
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json_path_handler& add_cb(int (*str_func)(yajlpp_parse_context*,
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const unsigned char*,
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size_t))
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{
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this->jph_callbacks.yajl_string
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= (int (*)(void*, const unsigned char*, size_t)) str_func;
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return *this;
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}
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json_path_handler& with_synopsis(const char* synopsis)
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{
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this->jph_synopsis = synopsis;
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return *this;
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}
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json_path_handler& with_description(const char* description)
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{
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this->jph_description = description;
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return *this;
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}
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json_path_handler& with_min_length(size_t len)
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{
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this->jph_min_length = len;
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return *this;
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}
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json_path_handler& with_max_length(size_t len)
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{
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this->jph_max_length = len;
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return *this;
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}
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json_path_handler& with_enum_values(const enum_value_t values[])
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{
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this->jph_enum_values = values;
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return *this;
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}
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template<typename T, std::size_t N>
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json_path_handler& with_pattern(const T (&re)[N])
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{
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this->jph_pattern_re = re;
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this->jph_pattern = lnav::pcre2pp::code::from_const(re).to_shared();
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return *this;
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}
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json_path_handler& with_min_value(long long val)
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{
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this->jph_min_value = val;
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return *this;
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}
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template<typename R, typename T>
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json_path_handler& with_obj_provider(
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R* (*provider)(const yajlpp_provider_context& pc, T* root))
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{
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this->jph_obj_provider
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= [provider](const yajlpp_provider_context& ypc, void* root) {
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return (R*) provider(ypc, (T*) root);
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};
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return *this;
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}
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template<typename R>
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json_path_handler& with_size_provider(size_t (*provider)(const R* root))
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{
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this->jph_size_provider
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= [provider](const void* root) { return provider((R*) root); };
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return *this;
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}
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template<typename T>
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json_path_handler& with_path_provider(
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void (*provider)(T* root, std::vector<std::string>& paths_out))
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{
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this->jph_path_provider
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= [provider](void* root, std::vector<std::string>& paths_out) {
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provider((T*) root, paths_out);
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};
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return *this;
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}
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template<typename T>
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json_path_handler& with_obj_deleter(
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void (*provider)(const yajlpp_provider_context& pc, T* root))
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{
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this->jph_obj_deleter
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= [provider](const yajlpp_provider_context& ypc, void* root) {
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provider(ypc, (T*) root);
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};
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return *this;
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}
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template<typename T, typename MEM_T, MEM_T T::*MEM>
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static void* get_field_lvalue_cb(void* root,
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nonstd::optional<std::string> name)
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{
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auto obj = (T*) root;
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auto& mem = obj->*MEM;
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return &mem;
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}
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template<typename T, typename STR_T, STR_T T::*STR>
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static int string_field_cb(yajlpp_parse_context* ypc,
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const unsigned char* str,
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size_t len)
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{
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auto handler = ypc->ypc_current_handler;
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if (ypc->ypc_locations) {
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(*ypc->ypc_locations)[ypc->get_full_path()]
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= source_location{ypc->ypc_source, ypc->get_line_number()};
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}
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assign(ypc->get_lvalue(ypc->get_obj_member<T, STR_T, STR>()),
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string_fragment(str, 0, len));
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handler->jph_validator(*ypc, *handler);
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return 1;
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}
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template<typename T, typename ENUM_T, ENUM_T T::*ENUM>
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static int enum_field_cb(yajlpp_parse_context* ypc,
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const unsigned char* str,
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size_t len)
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{
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auto obj = (T*) ypc->ypc_obj_stack.top();
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auto handler = ypc->ypc_current_handler;
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auto res = handler->to_enum_value(string_fragment(str, 0, len));
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if (res) {
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obj->*ENUM = (ENUM_T) res.value();
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} else {
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handler->report_enum_error(ypc,
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std::string((const char*) str, len));
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}
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return 1;
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}
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static int bool_field_cb(yajlpp_parse_context* ypc, int val)
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{
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return ypc->ypc_current_handler->jph_bool_cb(ypc, val);
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}
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static int str_field_cb2(yajlpp_parse_context* ypc,
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const unsigned char* str,
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size_t len)
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{
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return ypc->ypc_current_handler->jph_str_cb(ypc, str, len);
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}
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static int int_field_cb(yajlpp_parse_context* ypc, long long val)
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{
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return ypc->ypc_current_handler->jph_integer_cb(ypc, val);
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}
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template<typename T, typename NUM_T, NUM_T T::*NUM>
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static int num_field_cb(yajlpp_parse_context* ypc, long long num)
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{
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auto obj = (T*) ypc->ypc_obj_stack.top();
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obj->*NUM = num;
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return 1;
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}
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template<typename T, typename NUM_T, NUM_T T::*NUM>
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static int decimal_field_cb(yajlpp_parse_context* ypc, double num)
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{
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auto obj = (T*) ypc->ypc_obj_stack.top();
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obj->*NUM = num;
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return 1;
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}
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template<typename T, typename STR_T, STR_T T::*STR>
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static void string_field_validator(yajlpp_parse_context& ypc,
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const json_path_handler_base& jph)
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{
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auto& field_ptr = ypc.get_rvalue(ypc.get_obj_member<T, STR_T, STR>());
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if (jph.jph_pattern) {
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auto sf = to_string_fragment(field_ptr);
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if (!jph.jph_pattern->find_in(sf).ignore_error()) {
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jph.report_pattern_error(&ypc, sf.to_string());
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}
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}
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if (field_ptr.empty() && jph.jph_min_length > 0) {
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ypc.report_error(
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lnav::console::user_message::error(
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attr_line_t("invalid value for option ")
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.template append_quoted(lnav::roles::symbol(
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ypc.get_full_path().to_string())))
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.with_reason("empty values are not allowed")
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.with_snippet(ypc.get_snippet())
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.with_help(jph.get_help_text(&ypc)));
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} else if (field_ptr.size() < jph.jph_min_length) {
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ypc.report_error(
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lnav::console::user_message::error(
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attr_line_t()
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.template append_quoted(field_ptr)
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.append(" is not a valid value for option ")
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.append_quoted(lnav::roles::symbol(
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ypc.get_full_path().to_string())))
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.with_reason(attr_line_t("value must be at least ")
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.append(lnav::roles::number(
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fmt::to_string(jph.jph_min_length)))
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.append(" characters long"))
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.with_snippet(ypc.get_snippet())
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.with_help(jph.get_help_text(&ypc)));
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}
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}
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template<typename T, typename NUM_T, NUM_T T::*NUM>
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static void number_field_validator(yajlpp_parse_context& ypc,
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const json_path_handler_base& jph)
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{
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auto& field_ptr = ypc.get_rvalue(ypc.get_obj_member<T, NUM_T, NUM>());
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if (field_ptr < jph.jph_min_value) {
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jph.report_min_value_error(&ypc, field_ptr);
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}
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}
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template<typename T, typename R, R T::*FIELD>
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static yajl_gen_status field_gen(yajlpp_gen_context& ygc,
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const json_path_handler_base& jph,
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yajl_gen handle)
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{
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auto def_obj = (T*) (ygc.ygc_default_stack.empty()
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? nullptr
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: ygc.ygc_default_stack.top());
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auto obj = (T*) ygc.ygc_obj_stack.top();
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if (def_obj != nullptr && def_obj->*FIELD == obj->*FIELD) {
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return yajl_gen_status_ok;
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}
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if (ygc.ygc_depth) {
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yajl_gen_string(handle, jph.jph_property);
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}
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yajlpp_generator gen(handle);
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return gen(obj->*FIELD);
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}
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template<typename T, typename R, R T::*FIELD>
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static yajl_gen_status map_field_gen(yajlpp_gen_context& ygc,
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const json_path_handler_base& jph,
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yajl_gen handle)
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{
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const auto def_container = (T*) (ygc.ygc_default_stack.empty()
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? nullptr
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: ygc.ygc_default_stack.top());
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auto container = (T*) ygc.ygc_obj_stack.top();
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auto& obj = container->*FIELD;
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yajl_gen_status rc;
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for (const auto& pair : obj) {
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if (def_container != nullptr) {
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auto& def_obj = def_container->*FIELD;
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auto iter = def_obj.find(pair.first);
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if (iter != def_obj.end() && iter->second == pair.second) {
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continue;
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}
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}
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if ((rc = yajl_gen_string(handle, pair.first))
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!= yajl_gen_status_ok)
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{
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return rc;
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}
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if ((rc = yajl_gen_string(handle, pair.second))
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!= yajl_gen_status_ok)
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{
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return rc;
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}
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}
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return yajl_gen_status_ok;
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}
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template<typename T, typename STR_T, std::string T::*STR>
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json_path_handler& for_field()
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{
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this->add_cb(string_field_cb<T, STR_T, STR>);
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this->jph_gen_callback = field_gen<T, STR_T, STR>;
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this->jph_validator = string_field_validator<T, STR_T, STR>;
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this->jph_field_getter = get_field_lvalue_cb<T, STR_T, STR>;
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return *this;
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}
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template<typename T,
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typename STR_T,
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std::map<std::string, std::string> T::*STR>
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json_path_handler& for_field()
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{
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this->add_cb(string_field_cb<T, STR_T, STR>);
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this->jph_gen_callback = map_field_gen<T, STR_T, STR>;
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this->jph_validator = string_field_validator<T, STR_T, STR>;
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return *this;
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}
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template<typename T,
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typename STR_T,
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std::map<std::string, std::vector<std::string>> T::*STR>
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json_path_handler& for_field()
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{
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this->add_cb(string_field_cb<T, STR_T, STR>);
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this->jph_validator = string_field_validator<T, STR_T, STR>;
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return *this;
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}
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template<typename T, typename STR_T, std::vector<std::string> T::*STR>
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json_path_handler& for_field()
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{
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this->add_cb(string_field_cb<T, STR_T, STR>);
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this->jph_gen_callback = field_gen<T, STR_T, STR>;
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this->jph_validator = string_field_validator<T, STR_T, STR>;
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return *this;
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}
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template<typename T, typename STR_T, intern_string_t T::*STR>
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json_path_handler& for_field()
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{
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this->add_cb(string_field_cb<T, intern_string_t, STR>);
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this->jph_gen_callback = field_gen<T, intern_string_t, STR>;
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this->jph_validator = string_field_validator<T, intern_string_t, STR>;
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return *this;
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}
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template<typename T, typename BOOL_T, bool T::*BOOL>
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json_path_handler& for_field()
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|
{
|
|
this->add_cb(bool_field_cb);
|
|
this->jph_bool_cb = [&](yajlpp_parse_context* ypc, int val) {
|
|
auto obj = (T*) ypc->ypc_obj_stack.top();
|
|
|
|
obj->*BOOL = static_cast<bool>(val);
|
|
|
|
return 1;
|
|
};
|
|
this->jph_gen_callback = field_gen<T, bool, BOOL>;
|
|
|
|
return *this;
|
|
}
|
|
|
|
template<typename T, typename U>
|
|
static inline U& get_field(T& input, U(T::*field))
|
|
{
|
|
return input.*field;
|
|
}
|
|
|
|
template<typename T, typename U, typename... V>
|
|
static inline auto get_field(T& input, U(T::*field), V... args)
|
|
-> decltype(get_field(input.*field, args...))
|
|
{
|
|
return get_field(input.*field, args...);
|
|
}
|
|
|
|
template<typename T, typename U, typename... V>
|
|
static inline auto get_field(void* input, U(T::*field), V... args)
|
|
-> decltype(get_field(*((T*) input), field, args...))
|
|
{
|
|
return get_field(*((T*) input), field, args...);
|
|
}
|
|
|
|
template<typename R, typename T, typename... Args>
|
|
struct LastIs {
|
|
static constexpr bool value = LastIs<R, Args...>::value;
|
|
};
|
|
|
|
template<typename R, typename T>
|
|
struct LastIs<R, T> {
|
|
static constexpr bool value = false;
|
|
};
|
|
|
|
template<typename R, typename T>
|
|
struct LastIs<R, R T::*> {
|
|
static constexpr bool value = true;
|
|
};
|
|
|
|
template<typename T, typename... Args>
|
|
struct LastIsEnum {
|
|
static constexpr bool value = LastIsEnum<Args...>::value;
|
|
};
|
|
|
|
template<typename T, typename U>
|
|
struct LastIsEnum<U T::*> {
|
|
static constexpr bool value = std::is_enum<U>::value;
|
|
};
|
|
|
|
template<typename T, typename... Args>
|
|
struct LastIsNumber {
|
|
static constexpr bool value = LastIsNumber<Args...>::value;
|
|
};
|
|
|
|
template<typename T, typename U>
|
|
struct LastIsNumber<U T::*> {
|
|
static constexpr bool value
|
|
= std::is_integral<U>::value && !std::is_same<U, bool>::value;
|
|
};
|
|
|
|
template<typename T, typename U>
|
|
struct LastIsNumber<nonstd::optional<U> T::*> {
|
|
static constexpr bool value
|
|
= std::is_integral<U>::value && !std::is_same<U, bool>::value;
|
|
};
|
|
|
|
template<typename T, typename... Args>
|
|
struct LastIsVector {
|
|
static constexpr bool value = LastIsVector<Args...>::value;
|
|
};
|
|
|
|
template<typename T, typename U>
|
|
struct LastIsVector<std::vector<U> T::*> {
|
|
static constexpr bool value = true;
|
|
};
|
|
|
|
template<typename T, typename U>
|
|
struct LastIsVector<U T::*> {
|
|
static constexpr bool value = false;
|
|
};
|
|
|
|
template<typename T>
|
|
static bool is_field_set(const nonstd::optional<T>& field)
|
|
{
|
|
return field.has_value();
|
|
}
|
|
|
|
template<typename T>
|
|
static bool is_field_set(const T&)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
template<typename... Args,
|
|
std::enable_if_t<LastIs<bool, Args...>::value, bool> = true>
|
|
json_path_handler& for_field(Args... args)
|
|
{
|
|
this->add_cb(bool_field_cb);
|
|
this->jph_bool_cb = [args...](yajlpp_parse_context* ypc, int val) {
|
|
auto* obj = ypc->ypc_obj_stack.top();
|
|
|
|
json_path_handler::get_field(obj, args...) = static_cast<bool>(val);
|
|
|
|
return 1;
|
|
};
|
|
this->jph_gen_callback = [args...](yajlpp_gen_context& ygc,
|
|
const json_path_handler_base& jph,
|
|
yajl_gen handle) {
|
|
const auto& field = json_path_handler::get_field(
|
|
ygc.ygc_obj_stack.top(), args...);
|
|
|
|
if (!ygc.ygc_default_stack.empty()) {
|
|
const auto& field_def = json_path_handler::get_field(
|
|
ygc.ygc_default_stack.top(), args...);
|
|
|
|
if (field == field_def) {
|
|
return yajl_gen_status_ok;
|
|
}
|
|
}
|
|
|
|
if (ygc.ygc_depth) {
|
|
yajl_gen_string(handle, jph.jph_property);
|
|
}
|
|
|
|
yajlpp_generator gen(handle);
|
|
|
|
return gen(field);
|
|
};
|
|
this->jph_field_getter
|
|
= [args...](void* root, nonstd::optional<std::string> name) {
|
|
return (void*) &json_path_handler::get_field(root, args...);
|
|
};
|
|
|
|
return *this;
|
|
}
|
|
|
|
template<typename... Args,
|
|
std::enable_if_t<LastIsVector<Args...>::value, bool> = true>
|
|
json_path_handler& for_field(Args... args)
|
|
{
|
|
this->jph_obj_provider
|
|
= [args...](const yajlpp_provider_context& ypc, void* root) {
|
|
auto& vec = json_path_handler::get_field(root, args...);
|
|
|
|
if (ypc.ypc_index >= vec.size()) {
|
|
vec.resize(ypc.ypc_index + 1);
|
|
}
|
|
|
|
return &vec[ypc.ypc_index];
|
|
};
|
|
this->jph_size_provider = [args...](void* root) {
|
|
auto& vec = json_path_handler::get_field(root, args...);
|
|
|
|
return vec.size();
|
|
};
|
|
|
|
return *this;
|
|
}
|
|
|
|
template<typename T, typename U>
|
|
json_path_handler& for_child(positioned_property<U>(T::*field))
|
|
{
|
|
this->jph_obj_provider
|
|
= [field](const yajlpp_provider_context& ypc, void* root) -> void* {
|
|
auto& child = json_path_handler::get_field(root, field);
|
|
|
|
if (ypc.ypc_parse_context != nullptr && child.pp_path.empty()) {
|
|
child.pp_path = ypc.ypc_parse_context->get_full_path();
|
|
}
|
|
return &child.pp_value;
|
|
};
|
|
|
|
return *this;
|
|
}
|
|
|
|
template<typename... Args>
|
|
json_path_handler& for_child(Args... args)
|
|
{
|
|
this->jph_obj_provider = [args...](const yajlpp_provider_context& ypc,
|
|
void* root) -> void* {
|
|
auto& child = json_path_handler::get_field(root, args...);
|
|
|
|
return &child;
|
|
};
|
|
|
|
return *this;
|
|
}
|
|
|
|
template<typename... Args,
|
|
std::enable_if_t<
|
|
LastIs<std::map<std::string, std::string>, Args...>::value,
|
|
bool>
|
|
= true>
|
|
json_path_handler& for_field(Args... args)
|
|
{
|
|
this->add_cb(str_field_cb2);
|
|
this->jph_str_cb = [args...](yajlpp_parse_context* ypc,
|
|
const unsigned char* str,
|
|
size_t len) {
|
|
auto obj = ypc->ypc_obj_stack.top();
|
|
auto key = ypc->get_path_fragment(-1);
|
|
|
|
json_path_handler::get_field(obj, args...)[key]
|
|
= std::string((const char*) str, len);
|
|
|
|
return 1;
|
|
};
|
|
this->jph_gen_callback = [args...](yajlpp_gen_context& ygc,
|
|
const json_path_handler_base& jph,
|
|
yajl_gen handle) {
|
|
const auto& field = json_path_handler::get_field(
|
|
ygc.ygc_obj_stack.top(), args...);
|
|
|
|
if (!ygc.ygc_default_stack.empty()) {
|
|
const auto& field_def = json_path_handler::get_field(
|
|
ygc.ygc_default_stack.top(), args...);
|
|
|
|
if (field == field_def) {
|
|
return yajl_gen_status_ok;
|
|
}
|
|
}
|
|
|
|
{
|
|
yajlpp_generator gen(handle);
|
|
|
|
for (const auto& pair : field) {
|
|
gen(pair.first);
|
|
gen(pair.second);
|
|
}
|
|
}
|
|
|
|
return yajl_gen_status_ok;
|
|
};
|
|
return *this;
|
|
}
|
|
|
|
template<typename... Args,
|
|
std::enable_if_t<
|
|
LastIs<std::map<std::string, json_any_t>, Args...>::value,
|
|
bool>
|
|
= true>
|
|
json_path_handler& for_field(Args... args)
|
|
{
|
|
this->add_cb(bool_field_cb);
|
|
this->jph_bool_cb = [args...](yajlpp_parse_context* ypc, int val) {
|
|
auto* obj = ypc->ypc_obj_stack.top();
|
|
auto key = ypc->get_path_fragment(-1);
|
|
|
|
json_path_handler::get_field(obj, args...)[key] = val ? true
|
|
: false;
|
|
|
|
return 1;
|
|
};
|
|
this->add_cb(int_field_cb);
|
|
this->jph_integer_cb
|
|
= [args...](yajlpp_parse_context* ypc, long long val) {
|
|
auto* obj = ypc->ypc_obj_stack.top();
|
|
auto key = ypc->get_path_fragment(-1);
|
|
|
|
json_path_handler::get_field(obj, args...)[key]
|
|
= static_cast<int64_t>(val);
|
|
|
|
return 1;
|
|
};
|
|
this->add_cb(str_field_cb2);
|
|
this->jph_str_cb = [args...](yajlpp_parse_context* ypc,
|
|
const unsigned char* str,
|
|
size_t len) {
|
|
auto* obj = ypc->ypc_obj_stack.top();
|
|
auto key = ypc->get_path_fragment(-1);
|
|
|
|
json_path_handler::get_field(obj, args...)[key]
|
|
= std::string((const char*) str, len);
|
|
|
|
return 1;
|
|
};
|
|
this->jph_gen_callback = [args...](yajlpp_gen_context& ygc,
|
|
const json_path_handler_base& jph,
|
|
yajl_gen handle) {
|
|
const auto& field = json_path_handler::get_field(
|
|
ygc.ygc_obj_stack.top(), args...);
|
|
|
|
if (!ygc.ygc_default_stack.empty()) {
|
|
const auto& field_def = json_path_handler::get_field(
|
|
ygc.ygc_default_stack.top(), args...);
|
|
|
|
if (field == field_def) {
|
|
return yajl_gen_status_ok;
|
|
}
|
|
}
|
|
|
|
{
|
|
yajlpp_generator gen(handle);
|
|
|
|
for (const auto& pair : field) {
|
|
gen(pair.first);
|
|
pair.second.match([&gen](json_null_t v) { gen(); },
|
|
[&gen](bool v) { gen(v); },
|
|
[&gen](int64_t v) { gen(v); },
|
|
[&gen](double v) { gen(v); },
|
|
[&gen](const std::string& v) { gen(v); });
|
|
}
|
|
}
|
|
|
|
return yajl_gen_status_ok;
|
|
};
|
|
return *this;
|
|
}
|
|
|
|
template<typename... Args,
|
|
std::enable_if_t<LastIs<std::string, Args...>::value, bool> = true>
|
|
json_path_handler& for_field(Args... args)
|
|
{
|
|
this->add_cb(str_field_cb2);
|
|
this->jph_str_cb = [args...](yajlpp_parse_context* ypc,
|
|
const unsigned char* str,
|
|
size_t len) {
|
|
auto obj = ypc->ypc_obj_stack.top();
|
|
auto value_str = std::string((const char*) str, len);
|
|
auto jph = ypc->ypc_current_handler;
|
|
|
|
if (jph->jph_pattern) {
|
|
if (!jph->jph_pattern->find_in(value_str).ignore_error()) {
|
|
jph->report_pattern_error(ypc, value_str);
|
|
}
|
|
}
|
|
|
|
json_path_handler::get_field(obj, args...) = std::move(value_str);
|
|
|
|
return 1;
|
|
};
|
|
this->jph_gen_callback = [args...](yajlpp_gen_context& ygc,
|
|
const json_path_handler_base& jph,
|
|
yajl_gen handle) {
|
|
const auto& field = json_path_handler::get_field(
|
|
ygc.ygc_obj_stack.top(), args...);
|
|
|
|
if (!ygc.ygc_default_stack.empty()) {
|
|
const auto& field_def = json_path_handler::get_field(
|
|
ygc.ygc_default_stack.top(), args...);
|
|
|
|
if (field == field_def) {
|
|
return yajl_gen_status_ok;
|
|
}
|
|
}
|
|
|
|
if (ygc.ygc_depth) {
|
|
yajl_gen_string(handle, jph.jph_property);
|
|
}
|
|
|
|
yajlpp_generator gen(handle);
|
|
|
|
return gen(field);
|
|
};
|
|
this->jph_field_getter
|
|
= [args...](void* root, nonstd::optional<std::string> name) {
|
|
return (void*) &json_path_handler::get_field(root, args...);
|
|
};
|
|
return *this;
|
|
}
|
|
|
|
template<
|
|
typename... Args,
|
|
std::enable_if_t<LastIs<nonstd::optional<std::string>, Args...>::value,
|
|
bool>
|
|
= true>
|
|
json_path_handler& for_field(Args... args)
|
|
{
|
|
this->add_cb(str_field_cb2);
|
|
this->jph_str_cb = [args...](yajlpp_parse_context* ypc,
|
|
const unsigned char* str,
|
|
size_t len) {
|
|
auto obj = ypc->ypc_obj_stack.top();
|
|
auto value_str = std::string((const char*) str, len);
|
|
auto jph = ypc->ypc_current_handler;
|
|
|
|
if (jph->jph_pattern) {
|
|
if (!jph->jph_pattern->find_in(value_str).ignore_error()) {
|
|
jph->report_pattern_error(ypc, value_str);
|
|
}
|
|
}
|
|
|
|
json_path_handler::get_field(obj, args...) = std::move(value_str);
|
|
|
|
return 1;
|
|
};
|
|
this->jph_gen_callback = [args...](yajlpp_gen_context& ygc,
|
|
const json_path_handler_base& jph,
|
|
yajl_gen handle) {
|
|
const auto& field = json_path_handler::get_field(
|
|
ygc.ygc_obj_stack.top(), args...);
|
|
|
|
if (!ygc.ygc_default_stack.empty()) {
|
|
const auto& field_def = json_path_handler::get_field(
|
|
ygc.ygc_default_stack.top(), args...);
|
|
|
|
if (field == field_def) {
|
|
return yajl_gen_status_ok;
|
|
}
|
|
}
|
|
|
|
if (!field) {
|
|
return yajl_gen_status_ok;
|
|
}
|
|
|
|
if (ygc.ygc_depth) {
|
|
yajl_gen_string(handle, jph.jph_property);
|
|
}
|
|
|
|
yajlpp_generator gen(handle);
|
|
|
|
return gen(field.value());
|
|
};
|
|
this->jph_field_getter
|
|
= [args...](void* root, nonstd::optional<std::string> name) {
|
|
return (void*) &json_path_handler::get_field(root, args...);
|
|
};
|
|
return *this;
|
|
}
|
|
|
|
template<typename... Args,
|
|
std::enable_if_t<
|
|
LastIs<positioned_property<std::string>, Args...>::value,
|
|
bool>
|
|
= true>
|
|
json_path_handler& for_field(Args... args)
|
|
{
|
|
this->add_cb(str_field_cb2);
|
|
this->jph_str_cb = [args...](yajlpp_parse_context* ypc,
|
|
const unsigned char* str,
|
|
size_t len) {
|
|
auto obj = ypc->ypc_obj_stack.top();
|
|
auto value_str = std::string((const char*) str, len);
|
|
auto jph = ypc->ypc_current_handler;
|
|
|
|
if (jph->jph_pattern) {
|
|
if (!jph->jph_pattern->find_in(value_str).ignore_error()) {
|
|
jph->report_pattern_error(ypc, value_str);
|
|
}
|
|
}
|
|
|
|
auto& field = json_path_handler::get_field(obj, args...);
|
|
|
|
field.pp_path = ypc->get_full_path();
|
|
field.pp_location.sl_source = ypc->ypc_source;
|
|
field.pp_location.sl_line_number = ypc->get_line_number();
|
|
field.pp_value = std::move(value_str);
|
|
|
|
return 1;
|
|
};
|
|
this->jph_gen_callback = [args...](yajlpp_gen_context& ygc,
|
|
const json_path_handler_base& jph,
|
|
yajl_gen handle) {
|
|
const auto& field = json_path_handler::get_field(
|
|
ygc.ygc_obj_stack.top(), args...);
|
|
|
|
if (!ygc.ygc_default_stack.empty()) {
|
|
const auto& field_def = json_path_handler::get_field(
|
|
ygc.ygc_default_stack.top(), args...);
|
|
|
|
if (field.pp_value == field_def.pp_value) {
|
|
return yajl_gen_status_ok;
|
|
}
|
|
}
|
|
|
|
if (ygc.ygc_depth) {
|
|
yajl_gen_string(handle, jph.jph_property);
|
|
}
|
|
|
|
yajlpp_generator gen(handle);
|
|
|
|
return gen(field.pp_value);
|
|
};
|
|
return *this;
|
|
}
|
|
|
|
template<typename... Args,
|
|
std::enable_if_t<LastIs<intern_string_t, Args...>::value, bool>
|
|
= true>
|
|
json_path_handler& for_field(Args... args)
|
|
{
|
|
this->add_cb(str_field_cb2);
|
|
this->jph_str_cb = [args...](yajlpp_parse_context* ypc,
|
|
const unsigned char* str,
|
|
size_t len) {
|
|
auto obj = ypc->ypc_obj_stack.top();
|
|
auto value_str = std::string((const char*) str, len);
|
|
auto jph = ypc->ypc_current_handler;
|
|
|
|
if (jph->jph_pattern) {
|
|
if (!jph->jph_pattern->find_in(value_str).ignore_error()) {
|
|
jph->report_pattern_error(ypc, value_str);
|
|
}
|
|
}
|
|
|
|
json_path_handler::get_field(obj, args...)
|
|
= intern_string::lookup(value_str);
|
|
|
|
return 1;
|
|
};
|
|
this->jph_gen_callback = [args...](yajlpp_gen_context& ygc,
|
|
const json_path_handler_base& jph,
|
|
yajl_gen handle) {
|
|
const auto& field = json_path_handler::get_field(
|
|
ygc.ygc_obj_stack.top(), args...);
|
|
|
|
if (!ygc.ygc_default_stack.empty()) {
|
|
const auto& field_def = json_path_handler::get_field(
|
|
ygc.ygc_default_stack.top(), args...);
|
|
|
|
if (field == field_def) {
|
|
return yajl_gen_status_ok;
|
|
}
|
|
}
|
|
|
|
if (ygc.ygc_depth) {
|
|
yajl_gen_string(handle, jph.jph_property);
|
|
}
|
|
|
|
yajlpp_generator gen(handle);
|
|
|
|
return gen(field);
|
|
};
|
|
return *this;
|
|
}
|
|
|
|
template<typename... Args,
|
|
std::enable_if_t<
|
|
LastIs<positioned_property<intern_string_t>, Args...>::value,
|
|
bool>
|
|
= true>
|
|
json_path_handler& for_field(Args... args)
|
|
{
|
|
this->add_cb(str_field_cb2);
|
|
this->jph_str_cb = [args...](yajlpp_parse_context* ypc,
|
|
const unsigned char* str,
|
|
size_t len) {
|
|
auto obj = ypc->ypc_obj_stack.top();
|
|
auto value_str = std::string((const char*) str, len);
|
|
auto jph = ypc->ypc_current_handler;
|
|
|
|
if (jph->jph_pattern) {
|
|
if (!jph->jph_pattern->find_in(value_str).ignore_error()) {
|
|
jph->report_pattern_error(ypc, value_str);
|
|
}
|
|
}
|
|
|
|
auto& field = json_path_handler::get_field(obj, args...);
|
|
field.pp_path = ypc->get_full_path();
|
|
field.pp_location.sl_source = ypc->ypc_source;
|
|
field.pp_location.sl_line_number = ypc->get_line_number();
|
|
field.pp_value = intern_string::lookup(value_str);
|
|
|
|
return 1;
|
|
};
|
|
this->jph_gen_callback = [args...](yajlpp_gen_context& ygc,
|
|
const json_path_handler_base& jph,
|
|
yajl_gen handle) {
|
|
const auto& field = json_path_handler::get_field(
|
|
ygc.ygc_obj_stack.top(), args...);
|
|
|
|
if (!ygc.ygc_default_stack.empty()) {
|
|
const auto& field_def = json_path_handler::get_field(
|
|
ygc.ygc_default_stack.top(), args...);
|
|
|
|
if (field.pp_value == field_def.pp_value) {
|
|
return yajl_gen_status_ok;
|
|
}
|
|
}
|
|
|
|
if (ygc.ygc_depth) {
|
|
yajl_gen_string(handle, jph.jph_property);
|
|
}
|
|
|
|
yajlpp_generator gen(handle);
|
|
|
|
return gen(field.pp_value);
|
|
};
|
|
return *this;
|
|
}
|
|
|
|
template<typename>
|
|
struct int_ {
|
|
typedef int type;
|
|
};
|
|
template<typename C,
|
|
typename T,
|
|
typename int_<decltype(T::from(intern_string_t{}))>::type = 0,
|
|
typename... Args>
|
|
json_path_handler& for_field(Args... args, T C::*ptr_arg)
|
|
{
|
|
this->add_cb(str_field_cb2);
|
|
this->jph_str_cb = [args..., ptr_arg](yajlpp_parse_context* ypc,
|
|
const unsigned char* str,
|
|
size_t len) {
|
|
auto* obj = ypc->ypc_obj_stack.top();
|
|
auto value_frag = string_fragment::from_bytes(str, len);
|
|
const auto* jph = ypc->ypc_current_handler;
|
|
|
|
auto from_res = T::from(ypc->get_full_path(), value_frag);
|
|
if (from_res.isErr()) {
|
|
jph->report_error(
|
|
ypc, value_frag.to_string(), from_res.unwrapErr());
|
|
} else {
|
|
json_path_handler::get_field(obj, args..., ptr_arg)
|
|
= from_res.unwrap();
|
|
}
|
|
|
|
return 1;
|
|
};
|
|
return *this;
|
|
}
|
|
|
|
template<typename... Args,
|
|
std::enable_if_t<LastIsNumber<Args...>::value, bool> = true>
|
|
json_path_handler& for_field(Args... args)
|
|
{
|
|
this->add_cb(int_field_cb);
|
|
this->jph_integer_cb
|
|
= [args...](yajlpp_parse_context* ypc, long long val) {
|
|
auto jph = ypc->ypc_current_handler;
|
|
auto* obj = ypc->ypc_obj_stack.top();
|
|
|
|
if (val < jph->jph_min_value) {
|
|
jph->report_min_value_error(ypc, val);
|
|
return 1;
|
|
}
|
|
|
|
json_path_handler::get_field(obj, args...) = val;
|
|
|
|
return 1;
|
|
};
|
|
this->jph_gen_callback = [args...](yajlpp_gen_context& ygc,
|
|
const json_path_handler_base& jph,
|
|
yajl_gen handle) {
|
|
const auto& field = json_path_handler::get_field(
|
|
ygc.ygc_obj_stack.top(), args...);
|
|
|
|
if (!ygc.ygc_default_stack.empty()) {
|
|
const auto& field_def = json_path_handler::get_field(
|
|
ygc.ygc_default_stack.top(), args...);
|
|
|
|
if (field == field_def) {
|
|
return yajl_gen_status_ok;
|
|
}
|
|
}
|
|
|
|
if (!is_field_set(field)) {
|
|
return yajl_gen_status_ok;
|
|
}
|
|
|
|
if (ygc.ygc_depth) {
|
|
yajl_gen_string(handle, jph.jph_property);
|
|
}
|
|
|
|
yajlpp_generator gen(handle);
|
|
|
|
return gen(field);
|
|
};
|
|
this->jph_field_getter
|
|
= [args...](void* root, nonstd::optional<std::string> name) {
|
|
return (void*) &json_path_handler::get_field(root, args...);
|
|
};
|
|
|
|
return *this;
|
|
}
|
|
|
|
template<
|
|
typename... Args,
|
|
std::enable_if_t<LastIs<std::chrono::seconds, Args...>::value, bool>
|
|
= true>
|
|
json_path_handler& for_field(Args... args)
|
|
{
|
|
this->add_cb(str_field_cb2);
|
|
this->jph_str_cb = [args...](yajlpp_parse_context* ypc,
|
|
const unsigned char* str,
|
|
size_t len) {
|
|
auto obj = ypc->ypc_obj_stack.top();
|
|
auto handler = ypc->ypc_current_handler;
|
|
auto parse_res = relative_time::from_str(
|
|
string_fragment::from_bytes(str, len));
|
|
|
|
if (parse_res.isErr()) {
|
|
auto parse_error = parse_res.unwrapErr();
|
|
auto value_str = std::string((const char*) str, len);
|
|
|
|
handler->report_duration_error(ypc, value_str, parse_error);
|
|
return 1;
|
|
}
|
|
|
|
json_path_handler::get_field(obj, args...) = std::chrono::seconds(
|
|
parse_res.template unwrap().to_timeval().tv_sec);
|
|
|
|
return 1;
|
|
};
|
|
this->jph_gen_callback = [args...](yajlpp_gen_context& ygc,
|
|
const json_path_handler_base& jph,
|
|
yajl_gen handle) {
|
|
const auto& field = json_path_handler::get_field(
|
|
ygc.ygc_obj_stack.top(), args...);
|
|
|
|
if (!ygc.ygc_default_stack.empty()) {
|
|
const auto& field_def = json_path_handler::get_field(
|
|
ygc.ygc_default_stack.top(), args...);
|
|
|
|
if (field == field_def) {
|
|
return yajl_gen_status_ok;
|
|
}
|
|
}
|
|
|
|
if (ygc.ygc_depth) {
|
|
yajl_gen_string(handle, jph.jph_property);
|
|
}
|
|
|
|
yajlpp_generator gen(handle);
|
|
|
|
return gen(relative_time::from_timeval(
|
|
{static_cast<time_t>(field.count()), 0})
|
|
.to_string());
|
|
};
|
|
this->jph_field_getter
|
|
= [args...](void* root, nonstd::optional<std::string> name) {
|
|
return (void*) &json_path_handler::get_field(root, args...);
|
|
};
|
|
return *this;
|
|
}
|
|
|
|
template<typename... Args,
|
|
std::enable_if_t<LastIsEnum<Args...>::value, bool> = true>
|
|
json_path_handler& for_field(Args... args)
|
|
{
|
|
this->add_cb(str_field_cb2);
|
|
this->jph_str_cb = [args...](yajlpp_parse_context* ypc,
|
|
const unsigned char* str,
|
|
size_t len) {
|
|
auto obj = ypc->ypc_obj_stack.top();
|
|
auto handler = ypc->ypc_current_handler;
|
|
auto res = handler->to_enum_value(string_fragment(str, 0, len));
|
|
|
|
if (res) {
|
|
json_path_handler::get_field(obj, args...)
|
|
= (decltype(json_path_handler::get_field(
|
|
obj, args...))) res.value();
|
|
} else {
|
|
handler->report_enum_error(ypc,
|
|
std::string((const char*) str, len));
|
|
}
|
|
|
|
return 1;
|
|
};
|
|
this->jph_gen_callback = [args...](yajlpp_gen_context& ygc,
|
|
const json_path_handler_base& jph,
|
|
yajl_gen handle) {
|
|
const auto& field = json_path_handler::get_field(
|
|
ygc.ygc_obj_stack.top(), args...);
|
|
|
|
if (!ygc.ygc_default_stack.empty()) {
|
|
const auto& field_def = json_path_handler::get_field(
|
|
ygc.ygc_default_stack.top(), args...);
|
|
|
|
if (field == field_def) {
|
|
return yajl_gen_status_ok;
|
|
}
|
|
}
|
|
|
|
if (ygc.ygc_depth) {
|
|
yajl_gen_string(handle, jph.jph_property);
|
|
}
|
|
|
|
yajlpp_generator gen(handle);
|
|
|
|
return gen(jph.to_enum_string((int) field));
|
|
};
|
|
this->jph_field_getter
|
|
= [args...](void* root, nonstd::optional<std::string> name) {
|
|
return (void*) &json_path_handler::get_field(root, args...);
|
|
};
|
|
|
|
return *this;
|
|
};
|
|
|
|
template<typename T, typename NUM_T, NUM_T T::*NUM>
|
|
json_path_handler& for_field(
|
|
typename std::enable_if<std::is_integral<NUM_T>::value
|
|
&& !std::is_same<NUM_T, bool>::value>::type*
|
|
dummy
|
|
= 0)
|
|
{
|
|
this->add_cb(num_field_cb<T, NUM_T, NUM>);
|
|
this->jph_validator = number_field_validator<T, NUM_T, NUM>;
|
|
return *this;
|
|
}
|
|
|
|
template<typename T, typename NUM_T, double T::*NUM>
|
|
json_path_handler& for_field()
|
|
{
|
|
this->add_cb(decimal_field_cb<T, NUM_T, NUM>);
|
|
this->jph_validator = number_field_validator<T, NUM_T, NUM>;
|
|
return *this;
|
|
}
|
|
|
|
template<typename T, typename ENUM_T, ENUM_T T::*ENUM>
|
|
json_path_handler& for_field(
|
|
typename std::enable_if<std::is_enum<ENUM_T>::value>::type* dummy = 0)
|
|
{
|
|
this->add_cb(enum_field_cb<T, ENUM_T, ENUM>);
|
|
return *this;
|
|
}
|
|
|
|
json_path_handler& with_children(const json_path_container& container);
|
|
|
|
json_path_handler& with_example(const std::string& example)
|
|
{
|
|
this->jph_examples.emplace_back(example);
|
|
return *this;
|
|
}
|
|
};
|
|
|
|
struct json_path_container {
|
|
json_path_container(std::initializer_list<json_path_handler> children)
|
|
: jpc_children(children)
|
|
{
|
|
}
|
|
|
|
json_path_container& with_definition_id(const std::string& id)
|
|
{
|
|
this->jpc_definition_id = id;
|
|
return *this;
|
|
}
|
|
|
|
json_path_container& with_schema_id(const std::string& id)
|
|
{
|
|
this->jpc_schema_id = id;
|
|
return *this;
|
|
}
|
|
|
|
json_path_container& with_description(std::string desc)
|
|
{
|
|
this->jpc_description = std::move(desc);
|
|
return *this;
|
|
}
|
|
|
|
void gen_schema(yajlpp_gen_context& ygc) const;
|
|
|
|
void gen_properties(yajlpp_gen_context& ygc) const;
|
|
|
|
std::string jpc_schema_id;
|
|
std::string jpc_definition_id;
|
|
std::string jpc_description;
|
|
std::vector<json_path_handler> jpc_children;
|
|
};
|
|
|
|
template<typename T>
|
|
class yajlpp_parser {
|
|
public:
|
|
yajlpp_parser(intern_string_t src, const json_path_container* container)
|
|
: yp_parse_context(src, container)
|
|
{
|
|
this->yp_handle = yajl_alloc(&this->yp_parse_context.ypc_callbacks,
|
|
nullptr,
|
|
&this->yp_parse_context);
|
|
this->yp_parse_context.with_handle(this->yp_handle);
|
|
this->yp_parse_context.template with_obj(this->yp_obj);
|
|
this->yp_parse_context.ypc_userdata = this;
|
|
this->yp_parse_context.with_error_reporter(
|
|
[](const auto& ypc, const auto& um) {
|
|
auto* yp = static_cast<yajlpp_parser<T>*>(ypc.ypc_userdata);
|
|
|
|
yp->yp_errors.template emplace_back(um);
|
|
});
|
|
}
|
|
|
|
yajlpp_parser& with_ignore_unused(bool value)
|
|
{
|
|
this->yp_parse_context.with_ignore_unused(value);
|
|
|
|
return *this;
|
|
}
|
|
|
|
Result<T, std::vector<lnav::console::user_message>> of(
|
|
const string_fragment& json)
|
|
{
|
|
if (this->yp_parse_context.parse_doc(json)) {
|
|
return Ok(std::move(this->yp_obj));
|
|
}
|
|
|
|
return Err(std::move(this->yp_errors));
|
|
}
|
|
|
|
private:
|
|
yajlpp_parse_context yp_parse_context;
|
|
auto_mem<yajl_handle_t> yp_handle{yajl_free};
|
|
std::vector<lnav::console::user_message> yp_errors;
|
|
T yp_obj;
|
|
};
|
|
|
|
template<typename T>
|
|
struct typed_json_path_container : public json_path_container {
|
|
typed_json_path_container(std::initializer_list<json_path_handler> children)
|
|
: json_path_container(children)
|
|
{
|
|
}
|
|
|
|
typed_json_path_container<T>& with_schema_id2(const std::string& id)
|
|
{
|
|
this->jpc_schema_id = id;
|
|
return *this;
|
|
}
|
|
|
|
typed_json_path_container<T>& with_description2(std::string desc)
|
|
{
|
|
this->jpc_description = std::move(desc);
|
|
return *this;
|
|
}
|
|
|
|
yajlpp_parser<T> parser_for(intern_string_t src) const
|
|
{
|
|
return yajlpp_parser<T>{src, this};
|
|
}
|
|
|
|
std::string to_string(const T& obj) const
|
|
{
|
|
yajlpp_gen gen;
|
|
yajlpp_gen_context ygc(gen, *this);
|
|
ygc.template with_obj(obj);
|
|
ygc.ygc_depth = 1;
|
|
ygc.gen();
|
|
|
|
return gen.to_string_fragment().to_string();
|
|
}
|
|
|
|
json_string to_json_string(T& obj) const
|
|
{
|
|
yajlpp_gen gen;
|
|
yajlpp_gen_context ygc(gen, *this);
|
|
ygc.template with_obj(obj);
|
|
ygc.ygc_depth = 1;
|
|
ygc.gen();
|
|
|
|
return json_string{gen.get_handle()};
|
|
}
|
|
};
|
|
|
|
namespace yajlpp {
|
|
inline json_path_handler
|
|
property_handler(const std::string& path)
|
|
{
|
|
return {path};
|
|
}
|
|
|
|
template<typename T, std::size_t N>
|
|
inline json_path_handler
|
|
pattern_property_handler(const T (&path)[N])
|
|
{
|
|
return {lnav::pcre2pp::code::from_const(path).to_shared()};
|
|
}
|
|
} // namespace yajlpp
|
|
|
|
#endif
|