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std::string_view 的使用

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种太阳的热带美短
2026-06-29 09:40:55 +08:00
parent ccf7eecc29
commit c25e58ae17
40 changed files with 532 additions and 522 deletions
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Core/Base/JSON.cpp
+27 -25
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@@ -6,9 +6,9 @@
#define HANDLE_ERROR(reason) \
JSON::handle_error(__func__, reason, __FILE__, __LINE__);
namespace Psc {
std::function<void(const char *, const std::string&, const char *, int)>
std::function<void(const char *, std::string_view, const char *, int)>
JSON::handle_error = [](const char *function_name,
const std::string& reason, const char *file,
std::string_view reason, const char *file,
int line) {
std::ostringstream oss;
oss << "JSON::" << function_name << " 原因：" << reason << std::endl;
@@ -34,7 +34,7 @@ JSON::operator std::string() const {
}
PSC_DEFINE_TRIPLE_API_CONST_METHOD_FROM_BOOL(std::string, JSON, get_string,
PSC_JSON_KEY_PARAMS)
bool JSON::get_string_ec(const std::string& key, std::string& out,
bool JSON::get_string_ec(std::string_view key, std::string& out,
std::error_code& ec) const noexcept {
const JSON *that = get(key);
if (!that) {
@@ -56,7 +56,7 @@ bool JSON::bool_val_ec(bool& out, std::error_code& ec) const noexcept {
}
PSC_DEFINE_TRIPLE_API_CONST_METHOD_FROM_BOOL(bool, JSON, get_bool,
PSC_JSON_KEY_PARAMS)
bool JSON::get_bool_ec(const std::string& key, bool& out,
bool JSON::get_bool_ec(std::string_view key, bool& out,
std::error_code& ec) const noexcept {
const Psc::JSON *that = get(key);
if (!that) {
@@ -65,7 +65,7 @@ bool JSON::get_bool_ec(const std::string& key, bool& out,
}
return that->bool_val_ec(out, ec);
}
JSON::JSON(std::string key, const JSON& children) : key(std::move(key)), val(children.val), valueType(children.valueType),
JSON::JSON(std::string_view key, const JSON& children) : key(key), val(children.val), valueType(children.valueType),
children(children.children) {}
void JSON::append_list(const std::vector<JSON>& arr) {
#ifdef _DEBUG
@@ -99,7 +99,7 @@ void JSON::prepend(const JSON& json) {
#endif
children.insert(children.begin(), json);
}
bool JSON::has(const std::string& _key) const {
bool JSON::has(std::string_view _key) const {
for (const JSON& child : children) {
if (child.key == _key) {
return true;
@@ -107,7 +107,7 @@ bool JSON::has(const std::string& _key) const {
}
return false;
}
const JSON* JSON::get(const std::string& _key) const {
const JSON* JSON::get(std::string_view _key) const {
for (const JSON& child : children) {
if (child.key == _key) {
return &child;
@@ -122,21 +122,21 @@ JSON JSON::array(const std::vector<JSON>& children) {
JSON JSON::object(const std::vector<JSON>& children) {
return object("", children);
}
JSON JSON::array(std::string key, const std::vector<JSON>& children) {
JSON JSON::array(std::string_view key, const std::vector<JSON>& children) {
JSON ret;
ret.key = std::move(key);
ret.key = std::string(key);
ret.valueType = Array;
ret.children = children;
return ret;
}
JSON JSON::object(std::string key, const std::vector<JSON>& children) {
JSON JSON::object(std::string_view key, const std::vector<JSON>& children) {
JSON ret;
ret.key = std::move(key);
ret.key = std::string(key);
ret.valueType = Object;
ret.children = children;
return ret;
}
std::string JSON::get_indent(const int& indent, const std::string& indentStr) {
std::string JSON::get_indent(const int& indent, std::string_view indentStr) {
std::string ret;
for (int i = 0; i < indent; ++i) {
ret.append(indentStr);
@@ -144,13 +144,13 @@ std::string JSON::get_indent(const int& indent, const std::string& indentStr) {
return ret;
}
void JSON::append_value_string(std::string& ret, const int& indent, bool isEnd,
const std::string& object_split,
const std::string& array_split,
const std::string& indentStr,
std::string_view object_split,
std::string_view array_split,
std::string_view indentStr,
JsonType fatherType) const {
ret.append(get_indent(indent, indentStr));
if (fatherType == Object) ret.append("\"" + key + "\"" + ": ");
const std::string split = fatherType == Array ? array_split : object_split;
const std::string split = std::string(fatherType == Array ? array_split : object_split);
if (valueType == String) {
ret.append("\"" + val + "\"");
goto end;
@@ -164,7 +164,8 @@ void JSON::append_value_string(std::string& ret, const int& indent, bool isEnd,
goto end;
}
if (valueType == Object) {
ret.append("{" + object_split);
ret.append("{");
ret.append(object_split);
size_t n = children.size();
if (n) {
for (size_t i = 0; i < n - 1; ++i) {
@@ -178,7 +179,8 @@ void JSON::append_value_string(std::string& ret, const int& indent, bool isEnd,
goto end;
}
if (valueType == Array) {
ret.append("[" + array_split);
ret.append("[");
ret.append(array_split);
size_t n = children.size();
if (n) {
for (size_t i = 0; i < n - 1; ++i) {
@@ -207,9 +209,9 @@ void handleBlank(std::string& s) {
}
}
}
std::string JSON::to_json_string(const std::string& object_split,
const std::string& array_split,
const std::string& indentStr,
std::string JSON::to_json_string(std::string_view object_split,
std::string_view array_split,
std::string_view indentStr,
const int& indent) const {
if (valueType == Bool) return val;
if (valueType == String) return '\"' + val + '\"';
@@ -317,9 +319,9 @@ bool parse_number(std::string& s, size_t& i, std::string& out,
bool parse_json_EX(std::string& s, size_t& i, JSON& out,
std::error_code& ec) noexcept;
PSC_DEFINE_TRIPLE_API_FROM_BOOL(JSON, parse_json, PSC_JSON_PARSE_PARAMS)
bool parse_json_ec(const std::string& text, JSON& out,
bool parse_json_ec(std::string_view text, JSON& out,
std::error_code& ec) noexcept {
auto& t = const_cast<std::string&>(text);
auto t = std::string(text);
size_t i = 0;
return parse_json_EX(t, i, out, ec);
}
@@ -445,9 +447,9 @@ bool parse_array(std::string& s, size_t& i, JSON& out,
return true;
}
PSC_DEFINE_TRIPLE_API_FROM_BOOL(JSON, parse_json_file, PSC_JSON_FILE_PARAMS)
bool parse_json_file_ec(const std::string& file_name, JSON& out,
bool parse_json_file_ec(std::string_view file_name, JSON& out,
std::error_code& ec) noexcept {
auto readFile = [](const std::string& path, std::string& content,
auto readFile = [](std::string_view path, std::string& content,
std::error_code& ec) noexcept {
std::ifstream infile(path, std::ios::binary | std::ios::ate);
if (!infile.is_open()) {