table.inl

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// # This file is a part of toml++ and is subject to the the terms of the MIT license.
// # Copyright (c) Mark Gillard <mark.gillard@outlook.com.au>
// # See https://github.com/marzer/tomlplusplus/blob/master/LICENSE for the full license text.
//  SPDX-License-Identifier: MIT
#pragma once
 
// # {{
#include "preprocessor.hpp"
#if !TOML_IMPLEMENTATION
#error This is an implementation-only header.
#endif
// # }}
 
#include "header_start.hpp"
#include "node_view.hpp"
#include "table.hpp"
 
TOML_NAMESPACE_START {
  TOML_EXTERNAL_LINKAGE
  table::table() noexcept {
#if TOML_LIFETIME_HOOKS
    TOML_TABLE_CREATED;
#endif
  }
 
  TOML_EXTERNAL_LINKAGE
  table::~table() noexcept {
#if TOML_LIFETIME_HOOKS
    TOML_TABLE_DESTROYED;
#endif
  }
 
  TOML_EXTERNAL_LINKAGE
  table::table(const impl::table_init_pair* b, const impl::table_init_pair* e) {
#if TOML_LIFETIME_HOOKS
    TOML_TABLE_CREATED;
#endif
 
    TOML_ASSERT_ASSUME(b);
    TOML_ASSERT_ASSUME(e);
    TOML_ASSERT_ASSUME(b <= e);
 
    if TOML_UNLIKELY (b == e) return;
 
    for (; b != e; b++) {
      if (!b->value)  // empty node_views
        continue;
 
      map_.insert_or_assign(std::move(b->key), std::move(b->value));
    }
  }
 
  TOML_EXTERNAL_LINKAGE
  table::table(const table& other)  //
      : node(other), inline_{other.inline_} {
    for (auto&& [k, v] : other.map_) map_.emplace_hint(map_.end(), k, impl::make_node(*v));
 
#if TOML_LIFETIME_HOOKS
    TOML_TABLE_CREATED;
#endif
  }
 
  TOML_EXTERNAL_LINKAGE
  table::table(table && other) noexcept  //
      : node(std::move(other)), map_{std::move(other.map_)}, inline_{other.inline_} {
#if TOML_LIFETIME_HOOKS
    TOML_TABLE_CREATED;
#endif
  }
 
  TOML_EXTERNAL_LINKAGE
  table& table::operator=(const table& rhs) {
    if (&rhs != this) {
      node::operator=(rhs);
      map_.clear();
      for (auto&& [k, v] : rhs.map_) map_.emplace_hint(map_.end(), k, impl::make_node(*v));
      inline_ = rhs.inline_;
    }
    return *this;
  }
 
  TOML_EXTERNAL_LINKAGE
  table& table::operator=(table&& rhs) noexcept {
    if (&rhs != this) {
      node::operator=(std::move(rhs));
      map_    = std::move(rhs.map_);
      inline_ = rhs.inline_;
    }
    return *this;
  }
 
  TOML_PURE_GETTER
  TOML_EXTERNAL_LINKAGE
  bool table::is_homogeneous(node_type ntype) const noexcept {
    if (map_.empty()) return false;
 
    if (ntype == node_type::none) ntype = map_.cbegin()->second->type();
 
    for (auto&& [k, v] : map_) {
      TOML_UNUSED(k);
      if (v->type() != ntype) return false;
    }
 
    return true;
  }
 
  TOML_PURE_GETTER
  TOML_EXTERNAL_LINKAGE
  bool table::is_homogeneous(node_type ntype, node * &first_nonmatch) noexcept {
    if (map_.empty()) {
      first_nonmatch = {};
      return false;
    }
    if (ntype == node_type::none) ntype = map_.cbegin()->second->type();
    for (const auto& [k, v] : map_) {
      TOML_UNUSED(k);
      if (v->type() != ntype) {
        first_nonmatch = v.get();
        return false;
      }
    }
    return true;
  }
 
  TOML_PURE_GETTER
  TOML_EXTERNAL_LINKAGE
  bool table::is_homogeneous(node_type ntype, const node*& first_nonmatch) const noexcept {
    node*      fnm    = nullptr;
    const auto result = const_cast<table&>(*this).is_homogeneous(ntype, fnm);
    first_nonmatch    = fnm;
    return result;
  }
 
  TOML_PURE_GETTER
  TOML_EXTERNAL_LINKAGE
  node* table::get(std::string_view key) noexcept {
    if (auto it = map_.find(key); it != map_.end()) return it->second.get();
    return nullptr;
  }
 
  TOML_EXTERNAL_LINKAGE
  node& table::at(std::string_view key) {
    auto n = get(key);
 
#if TOML_COMPILER_HAS_EXCEPTIONS
 
    if (!n) {
      auto err = "key '"s;
      err.append(key);
      err.append("' not found in table"sv);
      throw std::out_of_range{err};
    }
 
#else
 
    TOML_ASSERT_ASSUME(n && "key not found in table!");
 
#endif
 
    return *n;
  }
 
  TOML_PURE_GETTER
  TOML_EXTERNAL_LINKAGE
  table::map_iterator table::get_lower_bound(std::string_view key) noexcept {
    return map_.lower_bound(key);
  }
 
  TOML_PURE_GETTER
  TOML_EXTERNAL_LINKAGE
  table::iterator table::find(std::string_view key) noexcept {
    return iterator{map_.find(key)};
  }
 
  TOML_PURE_GETTER
  TOML_EXTERNAL_LINKAGE
  table::const_iterator table::find(std::string_view key) const noexcept {
    return const_iterator{map_.find(key)};
  }
 
  TOML_EXTERNAL_LINKAGE
  table::map_iterator table::erase(const_map_iterator pos) noexcept {
    return map_.erase(pos);
  }
 
  TOML_EXTERNAL_LINKAGE
  table::map_iterator table::erase(const_map_iterator begin, const_map_iterator end) noexcept {
    return map_.erase(begin, end);
  }
 
  TOML_EXTERNAL_LINKAGE
  size_t table::erase(std::string_view key) noexcept {
    if (auto it = map_.find(key); it != map_.end()) {
      map_.erase(it);
      return size_t{1};
    }
    return size_t{};
  }
 
  TOML_EXTERNAL_LINKAGE
  table& table::prune(bool recursive) & noexcept {
    if (map_.empty()) return *this;
 
    for (auto it = map_.begin(); it != map_.end();) {
      if (auto arr = it->second->as_array()) {
        if (recursive) arr->prune(true);
 
        if (arr->empty()) {
          it = map_.erase(it);
          continue;
        }
      } else if (auto tbl = it->second->as_table()) {
        if (recursive) tbl->prune(true);
 
        if (tbl->empty()) {
          it = map_.erase(it);
          continue;
        }
      }
      it++;
    }
 
    return *this;
  }
 
  TOML_EXTERNAL_LINKAGE
  void table::clear() noexcept {
    map_.clear();
  }
 
  TOML_EXTERNAL_LINKAGE
  table::map_iterator table::insert_with_hint(const_iterator hint, key && k, impl::node_ptr && v) {
    return map_.emplace_hint(const_map_iterator{hint}, std::move(k), std::move(v));
  }
 
  TOML_PURE_GETTER
  TOML_EXTERNAL_LINKAGE
  bool TOML_CALLCONV table::equal(const table& lhs, const table& rhs) noexcept {
    if (&lhs == &rhs) return true;
    if (lhs.map_.size() != rhs.map_.size()) return false;
 
    for (auto l = lhs.map_.begin(), r = rhs.map_.begin(), e = lhs.map_.end(); l != e; l++, r++) {
      if (l->first != r->first) return false;
 
      const auto  lhs_type = l->second->type();
      const node& rhs_     = *r->second;
      const auto  rhs_type = rhs_.type();
      if (lhs_type != rhs_type) return false;
 
      const bool equal = l->second->visit([&](const auto& lhs_) noexcept {
        return lhs_ == *reinterpret_cast<std::remove_reference_t<decltype(lhs_)>*>(&rhs_);
      });
      if (!equal) return false;
    }
    return true;
  }
}
TOML_NAMESPACE_END;
 
#include "header_end.hpp"