Move potentially useful vectorize_ntargs from app_parameters.cpp to .hpp; general cleanup

src/common/app_parameters.cpp

@@ -1,5 +1,5 @@
 /**
- * Copyright (C) 2019 Jessica James.
+ * Copyright (C) 2019-2021 Jessica James.
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -17,28 +17,60 @@
  */
 
 #include "app_parameters.hpp"
+#include "jessilib/unicode.hpp"
+#include "jessilib/split.hpp"
 
 namespace jessilib {
 
-app_parameters::app_parameters(int in_argc, char** in_argv)
+app_parameters::app_parameters(int, char** in_argv, char** in_envp)
-	: app_parameters{ in_argc, const_cast<const char**>(in_argv) } {
+	: app_parameters{ vectorize_ntargs(in_argv), vectorize_ntargs(in_envp) } {
 	// Empty ctor body
 }
 
-app_parameters::app_parameters(int in_argc, const char** in_argv) {
+app_parameters::app_parameters(int, const char** in_argv, const char** in_envp)
-	// TODO: discard argc/argv and use GetCommandLineW on Windows
+	: app_parameters{ vectorize_ntargs(in_argv), vectorize_ntargs(in_envp) } {
-	// TODO: not assume argv is utf-8; it often will not be
+	// Empty ctor body
+}
+
+app_parameters::app_parameters(int, wchar_t** in_argv, wchar_t** in_envp)
+	: app_parameters{ vectorize_ntargs(in_argv), vectorize_ntargs(in_envp) } {
+	// Empty ctor body
+}
+
+app_parameters::app_parameters(int, const wchar_t** in_argv, const wchar_t** in_envp)
+	: app_parameters{ vectorize_ntargs(in_argv), vectorize_ntargs(in_envp) } {
+	// Empty ctor body
+}
+
+#ifdef __cpp_lib_generic_unordered_lookup
+#define WRAP_MAP_KEY(in_key) in_key
+#else // We can't use std::string_view for InKeyType until GCC 11 & clang 12, and I still want to support GCC 9
+#define WRAP_MAP_KEY(in_key) static_cast<string_type>(in_key)
+#endif // __cpp_lib_generic_unordered_lookup
+
+bool app_parameters::has_switch(string_view_type in_switch) const {
+	return m_switches_set.find(WRAP_MAP_KEY(in_switch)) != m_switches_set.end();
+}
+
+app_parameters::app_parameters(std::vector<string_type> in_args, std::vector<string_type> in_env) {
+	// Parse in environment variables first to ensure they're parsed before the early-out
+	for (const auto& env : in_env) {
+		auto split = jessilib::split_once(env, u8'=');
+		m_values[split.first] = split.second;
+		m_env_values[split.first] = std::move(split.second);
+	}
+
 	// Sanity safety check; should never happen
-	if (in_argc <= 0 || in_argv == nullptr) {
+	if (in_args.empty()) {
 		return;
 	}
 
 	// Populate path
-	m_path = reinterpret_cast<const char8_t*>(in_argv[0]);
+	m_path = in_args[0];
 
 	// Process args
-	std::u8string_view key;
+	string_view_type key;
-	std::u8string value;
+	string_type value;
 	auto flush_value = [&key, &value, this]() {
 		// This is the start of a key; flush what we were previously processing
 		if (!key.empty()) {
@@ -46,29 +78,32 @@ app_parameters::app_parameters(int in_argc, const char** in_argv) {
 				m_switches.emplace_back(key);
 			}
 			else {
-				m_values.emplace(key, std::move(value));
+				string_type key_str{ key };
+				m_values[key_str] = value;
+				m_arg_values[key_str] = std::move(value);
 				value.clear();
 			}
 		}
 	};
 
-	for (int index = 1; index < in_argc; ++index) {
+	for (size_t index = 1; index < in_args.size(); ++index) {
-		const char8_t* arg = reinterpret_cast<const char8_t*>(in_argv[index]);
+		const string_type& arg = in_args[index];
-		if (arg != nullptr && *arg != '\0') {
+		if (!arg.empty()) {
 			// Check if this is a key or value
-			if (*arg == '-') {
+			if (arg.front() == '-') {
 				// Flush pending value (if any)
 				flush_value();
 
 				// Strip any leading '-' or '--' and set key
-				key = arg + 1;
+				key = arg;
-				if (key[0] == '-') {
+				key.remove_prefix(1);
+				if (key.front() == '-') {
 					key.remove_prefix(1);
 				}
 
 				// Parse key for any value denominator ('=')
 				size_t key_end = key.find('=');
-				if (key_end != std::u8string_view::npos) {
+				if (key_end != string_view_type::npos) {
 					// arg contains start of a value
 					value = key.substr(key_end + 1);
 					key = key.substr(0, key_end);
@@ -93,26 +128,34 @@ app_parameters::app_parameters(int in_argc, const char** in_argv) {
 	flush_value();
 
 	// Populate m_switches_set from m_switches
-	m_switches_set = std::unordered_set<std::u8string_view>{ m_switches.begin(), m_switches.end() };
+	m_switches_set = { m_switches.begin(), m_switches.end() };
 }
 
-std::u8string_view app_parameters::path() const {
+app_parameters::string_view_type app_parameters::path() const {
 	return m_path;
 }
 
-const std::vector<std::u8string_view>& app_parameters::arguments() const {
+const std::vector<app_parameters::string_type>& app_parameters::arguments() const {
 	return m_args;
 }
 
-const std::vector<std::u8string_view>& app_parameters::switches() const {
+const std::vector<app_parameters::string_type>& app_parameters::switches() const {
 	return m_switches;
 }
 
-const std::unordered_set<std::u8string_view>& app_parameters::switches_set() const {
+const app_parameters::set_type& app_parameters::switches_set() const {
 	return m_switches_set;
 }
 
-const std::unordered_map<std::u8string_view, std::u8string>& app_parameters::values() const {
+const app_parameters::map_type& app_parameters::arg_values() const {
+	return m_arg_values;
+}
+
+const app_parameters::map_type& app_parameters::env_values() const {
+	return m_env_values;
+}
+
+const app_parameters::map_type& app_parameters::values() const {
 	return m_values;
 }
 
@@ -126,20 +169,40 @@ object app_parameters::as_object() const {
 		return object{};
 	}
 
-	return std::map<std::u8string, object>{
+	return std::map<string_type, object>{
 		{ u8"Path"s, m_path },
 		{ u8"Args"s, m_args },
 		{ u8"Switches"s, m_switches },
+		{ u8"ArgValues"s, m_arg_values },
+		{ u8"EnvValues"s, m_env_values },
 		{ u8"Values"s, m_values }
 	};
 }
 
-bool app_parameters::has_switch(std::u8string_view in_switch) const {
+app_parameters::string_view_type app_parameters::get_arg_value(string_view_type in_key, string_view_type in_default) const {
-	return m_switches_set.find(in_switch) != m_switches_set.end();
+	auto result = m_arg_values.find(WRAP_MAP_KEY(in_key));
+
+	// Safety check
+	if (result == m_arg_values.end()) {
+		return in_default;
+	}
+
+	return result->second;
+}
+
+app_parameters::string_view_type app_parameters::get_env_value(string_view_type in_key, string_view_type in_default) const {
+	auto result = m_env_values.find(WRAP_MAP_KEY(in_key));
+
+	// Safety check
+	if (result == m_env_values.end()) {
+		return in_default;
+	}
+
+	return result->second;
 }
 
-std::u8string_view app_parameters::get_value(std::u8string_view in_key, std::u8string_view in_default) const {
+app_parameters::string_view_type app_parameters::get_value(string_view_type in_key, string_view_type in_default) const {
-	auto result = m_values.find(in_key);
+	auto result = m_values.find(WRAP_MAP_KEY(in_key));
 
 	// Safety check
 	if (result == m_values.end()) {

src/common/parsers/json.cpp

@@ -19,6 +19,7 @@
 #include "parsers/json.hpp"
 #include <charconv>
 #include "unicode.hpp"
+#include "unicode_sequence.hpp"
 #include "util.hpp"
 
 using namespace std::literals;
@@ -101,135 +102,41 @@ std::u8string read_json_string(std::string_view& in_data) {
 	// Remove leading quotation
 	in_data.remove_prefix(1);
 
-	// Iterate over view until we reach the ending quotation, or the end of the view
-	while (!in_data.empty()) {
-		switch (in_data.front()) {
-			// Escape sequence
-			case '\\':
-				// strip '\'
-				in_data.remove_prefix(1);
 	if (in_data.empty()) {
-					throw std::invalid_argument{ "Invalid JSON data; unexpected end of data when parsing escape sequence" };
+		throw std::invalid_argument{ "Invalid JSON data; missing ending quote (\") when parsing string" };
 	}
 
-				// Parse escape type
+	if (in_data.front() == '\"') {
-				switch (in_data.front()) {
-					// Quote
-					case '\"':
-						in_data.remove_prefix(1);
-						result += u8'\"';
-						break;
-
-					// Backslash
-					case '\\':
-						in_data.remove_prefix(1);
-						result += u8'\\';
-						break;
-
-					// Forward slash
-					case '/':
-						in_data.remove_prefix(1);
-						result += u8'/';
-						break;
-
-					// Backspace
-					case 'b':
-						in_data.remove_prefix(1);
-						result += u8'\b';
-						break;
-
-					// Formfeed
-					case 'f':
-						in_data.remove_prefix(1);
-						result += u8'\f';
-						break;
-
-					// Newline
-					case 'n':
-						in_data.remove_prefix(1);
-						result += u8'\n';
-						break;
-
-					// Carriage return
-					case 'r':
-						in_data.remove_prefix(1);
-						result += u8'\r';
-						break;
-
-					// Horizontal tab
-					case 't':
 		in_data.remove_prefix(1);
-						result += u8'\t';
+		advance_whitespace(in_data); // strip trailing spaces
-						break;
+		return result;
-
-					// Unicode codepoint
-					case 'u': {
-						in_data.remove_prefix(1); // strip 'u'
-						if (in_data.size() < 4) {
-							throw std::invalid_argument{
-								"Invalid JSON data; unexpected end of data when parsing unicode escape sequence" };
 	}
 
-						char16_t codepoint = get_codepoint_from_hex(in_data);
+	size_t search_start = 1;
-						in_data.remove_prefix(4); // strip codepoint hex
+	size_t end_pos;
-
+	while ((end_pos = in_data.find('\"', search_start)) != std::string_view::npos) {
-						if (is_high_surrogate(codepoint) // If we have a high surrogate...
+		// Quote found; check if it's escaped
-							&& in_data.size() >= 6) { // And we have enough room for "\uXXXX"...
+		if (in_data[end_pos - 1] != '\\') {
-							// Special case: we just parsed a high surrogate. Handle this with the low surrogate, if there is one
+			// Unescaped quote; must be end of string
-							if (in_data.substr(0, 2) == "\\u"sv) {
+			break;
-								// Another codepoint follows; read it in
-								in_data.remove_prefix(2); // strip "\u"
-								char16_t second_codepoint = get_codepoint_from_hex(in_data);
-								in_data.remove_prefix(4); // strip codepoint hex
-
-								if (is_low_surrogate(second_codepoint)) {
-									// We've got a valid surrogate pair; serialize the represented codepoint; decode it
-									codepoint = static_cast<char16_t>(decode_surrogate_pair(codepoint, second_codepoint).codepoint);
-									encode_codepoint(result, codepoint); // serialize the real codepoint
-								}
-								else {
-									// This is not a valid surrogate pair; serialize the codepoints directly
-									encode_codepoint(result, codepoint);
-									encode_codepoint(result, second_codepoint);
-								}
-								continue;
-							}
 		}
 
-						encode_codepoint(result, codepoint);
+		search_start = end_pos + 1;
-						continue;
 	}
 
-					default:
+	if (end_pos == std::string_view::npos) {
-						throw std::invalid_argument{ "Invalid JSON data; unexpected token: '"s + in_data.front() + "' when parsing escape sequence" };
+		throw std::invalid_argument{ "Invalid JSON data; missing ending quote (\") when parsing string" };
 	}
 
-				break;
+	std::u8string_view string_data = jessilib::string_view_cast<char8_t>(in_data.substr(0, end_pos));
-
+	in_data.remove_prefix(string_data.size() + 1);
-			// End of string
-			case '\"':
-				in_data.remove_prefix(1); // strip trailing quotation
 	advance_whitespace(in_data); // strip trailing spaces
-				return result;
+	result = string_data;
-
+	if (!jessilib::apply_cpp_escape_sequences(result)) {
-			// Unicode sequence
+		throw std::invalid_argument{ jessilib::join<std::string>("Invalid JSON data; invalid token or end of string: "sv, string_data) };
-			default: {
-				auto codepoint = decode_codepoint(in_data);
-				if (codepoint.units == 0) {
-					// Invalid unicode sequence
-					throw std::invalid_argument{ "Invalid JSON data; unexpected token: '"s + in_data.front() + "' when parsing string" };
 	}
 
-				// Valid unicode sequence
+	return result;
-				result.append(reinterpret_cast<const char8_t*>(in_data.data()), codepoint.units);
-				in_data.remove_prefix(codepoint.units);
-				break;
-			}
-		}
-	}
-
-	// We reached the end of the string_view before encountering an ending quote
-	throw std::invalid_argument{ "Invalid JSON data; missing ending quote (\") when parsing string" };
 }
 
 object read_json_number(std::string_view& in_data) {

src/include/jessilib/app_parameters.hpp

@@ -1,5 +1,5 @@
 /**
- * Copyright (C) 2019 Jessica James.
+ * Copyright (C) 2019-2021 Jessica James.
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -17,32 +17,94 @@
  */
 
 #include "object.hpp"
+#include "unicode.hpp"
 
 namespace jessilib {
 
 class app_parameters {
 public:
-	app_parameters(int in_argc, char** in_argv);
+	using string_type = std::u8string;
-	app_parameters(int in_argc, const char** in_argv);
+	using string_view_type = std::u8string_view;
+	using set_type = std::unordered_set<string_type, jessilib::text_hashi, jessilib::text_equali>;
+	using map_type = std::unordered_map<string_type, string_type, jessilib::text_hashi, jessilib::text_equali>;
 
-	std::u8string_view path() const;
+	app_parameters(int in_argc, char** in_argv, char** in_envp = nullptr);
-	const std::vector<std::u8string_view>& arguments() const;
+	app_parameters(int in_argc, const char** in_argv, const char** in_envp = nullptr);
-	const std::vector<std::u8string_view>& switches() const;
+	app_parameters(int in_argc, wchar_t** in_argv, wchar_t** in_envp = nullptr);
-	const std::unordered_set<std::u8string_view>& switches_set() const;
+	app_parameters(int in_argc, const wchar_t** in_argv, const wchar_t** in_envp = nullptr);
-	const std::unordered_map<std::u8string_view, std::u8string>& values() const;
+	app_parameters(std::vector<string_type> in_args, std::vector<string_type> in_env = {});
-	jessilib::object as_object() const;
 
-	bool has_switch(std::u8string_view in_switch) const;
+	[[nodiscard]] string_view_type path() const;
-	std::u8string_view get_value(std::u8string_view in_key, std::u8string_view in_default = {}) const;
+	[[nodiscard]] const std::vector<string_type>& arguments() const;
 
-	operator jessilib::object() const { return as_object(); }
+	[[nodiscard]] const std::vector<string_type>& switches() const;
+	[[nodiscard]] const set_type& switches_set() const;
+	[[nodiscard]] const map_type& arg_values() const;
+	[[nodiscard]] const map_type& env_values() const;
+	[[nodiscard]] const map_type& values() const;
+	[[nodiscard]] jessilib::object as_object() const;
+
+	[[nodiscard]] bool has_switch(string_view_type in_switch) const;
+	[[nodiscard]] string_view_type get_arg_value(string_view_type in_key, string_view_type in_default = {}) const;
+	[[nodiscard]] string_view_type get_env_value(string_view_type in_key, string_view_type in_default = {}) const;
+	[[nodiscard]] string_view_type get_value(string_view_type in_key, string_view_type in_default = {}) const;
+
+	[[nodiscard]] inline operator jessilib::object() const { return as_object(); }
 
 private:
-	std::u8string_view m_path;
+	string_type m_path;
-	std::vector<std::u8string_view> m_args;
+	std::vector<string_type> m_args;
-	std::vector<std::u8string_view> m_switches;
+	std::vector<string_type> m_switches;
-	std::unordered_set<std::u8string_view> m_switches_set;
+	set_type m_switches_set;
-	std::unordered_map<std::u8string_view, std::u8string> m_values;
+	map_type m_arg_values;
+	map_type m_env_values;
+	map_type m_values;
 };
 
+/**
+ * Converts null-terminated argument array of null-terminated strings to a vector of unicode strings
+ *
+ * @tparam OutCharT Unicode character data type
+ * @tparam InCharT Input character type (char for multi-byte string, or wchar_t for wide character strings)
+ * @param in_ntarg_array Null-terminated argument array to vectorize
+ * @return A vector of unicode strings recoded from the input
+ */
+template<typename OutCharT = char8_t, typename InCharT,
+	std::enable_if_t<std::is_same_v<std::remove_cvref_t<InCharT>, char>>* = nullptr>
+std::vector<std::basic_string<OutCharT>> vectorize_ntargs(InCharT** in_ntarg_array) {
+	std::vector<std::basic_string<OutCharT>> result;
+	if (in_ntarg_array == nullptr) {
+		return result;
+	}
+
+	for (auto argv = in_ntarg_array; *argv != nullptr; ++argv) {
+		result.emplace_back(mbstring_to_ustring<OutCharT>(*argv).second);
+	}
+
+	return result;
+}
+
+/**
+ * Converts null-terminated argument array of null-terminated strings to a vector of unicode strings
+ *
+ * @tparam OutCharT Unicode character data type
+ * @tparam InCharT Input character type (char for multi-byte string, or wchar_t for wide character strings)
+ * @param in_ntarg_array Null-terminated argument array to vectorize
+ * @return A vector of unicode strings recoded from the input
+ */
+template<typename OutCharT = char8_t, typename InCharT,
+	std::enable_if_t<std::is_same_v<std::remove_cvref_t<InCharT>, wchar_t>>* = nullptr>
+std::vector<std::basic_string<OutCharT>> vectorize_ntargs(InCharT** in_ntarg_array) {
+	std::vector<std::basic_string<OutCharT>> result;
+	if (in_ntarg_array == nullptr) {
+		return result;
+	}
+
+	for (auto argv = in_ntarg_array; *argv != nullptr; ++argv) {
+		result.emplace_back(jessilib::string_cast<OutCharT>(std::wstring_view{ *argv }));
+	}
+
+	return result;
+}
+
 } // namespace jessilib

src/include/jessilib/unicode.hpp

@@ -18,6 +18,7 @@
 
 #pragma once
 
+#include <cuchar>
 #include "unicode_compare.hpp"
 
 namespace jessilib {
@@ -176,6 +177,65 @@ std::basic_string<OutCharT> string_cast(const InT& in_string) {
 	}
 }
 
+/**
+ * Recodes a multi-byte string into a unicode-encoded string
+ *
+ * @tparam CharT Character type for resulting unicode string
+ * @param in_mbs Multibyte string to recode
+ * @return A pair containing a boolean which is true on success, and a unicode string
+ */
+template<typename CharT>
+std::pair<bool, std::basic_string<CharT>> mbstring_to_ustring(std::string_view in_mbstring) {
+	std::pair<bool, std::basic_string<CharT>> result;
+
+	std::mbstate_t mbstate{};
+	while (!in_mbstring.empty()) {
+		char32_t codepoint{};
+		size_t bytes_read = std::mbrtoc32(&codepoint, in_mbstring.data(), in_mbstring.size(), &mbstate);
+		if (bytes_read > in_mbstring.size()) {
+			// Some sort of error; return
+			result.first = false;
+			return result;
+		}
+
+		// bytes_read is 0 for null characters; ensure null characters are also removed from the view
+		bytes_read = std::max(size_t{1}, bytes_read);
+		in_mbstring.remove_prefix(bytes_read);
+		encode_codepoint(result.second, codepoint);
+	}
+
+	result.first = true;
+	return result;
+}
+
+/**
+ * Recodes a unicode string into a multi-byte string
+ * @tparam CharT Character type for input unicode string
+ * @param in_string Unicode string to recode
+ * @return A pair containing a boolean which is true on success, and a multi-byte string
+ */
+template<typename CharT>
+std::pair<bool, std::string> ustring_to_mbstring(std::basic_string_view<CharT> in_string) {
+	std::pair<bool, std::string> result;
+
+	std::mbstate_t mbstate{};
+	decode_result decode;
+	while ((decode = decode_codepoint(in_string).units != 0)) {
+		char buffer[MB_CUR_MAX]; // MB_LEN_MAX
+		size_t bytes_written = std::c32rtomb(buffer, decode.codepoint, &mbstate);
+		if (bytes_written > MB_CUR_MAX) {
+			// Invalid codepoint; return
+			result.first = false;
+			return result;
+		}
+
+		result.second.append(buffer, bytes_written);
+	}
+
+	result.first = true;
+	return result;
+}
+
 /**
  * Searches a string for a specified substring
  *

src/include/jessilib/unicode_base.hpp

@@ -454,7 +454,7 @@ constexpr decode_result decode_codepoint_utf32(std::basic_string_view<CharT> in_
 		return { 0, 0 };
 	}
 
-	return { in_string.front(), 1 };
+	return { static_cast<char32_t>(in_string.front()), 1 };
 }
 
 template<typename CharT>

src/test/app_parameters.cpp

@@ -22,24 +22,26 @@
 using namespace jessilib;
 using namespace std::literals;
 
+template<typename CharT = char>
 class ArgWrapper {
 public:
 	template<typename... Args>
 	ArgWrapper(Args... in_args)
-		: ArgWrapper{ std::vector<std::string>{ in_args... } } {
+		: ArgWrapper{ std::vector<std::basic_string<CharT>>{ in_args... } } {
 		// Empty ctor body
 	}
 
-	ArgWrapper(std::vector<std::string> in_args)
+	ArgWrapper(std::vector<std::basic_string<CharT>> in_args)
 		: m_args{ in_args },
-		m_argv{ new const char*[in_args.size()] } {
+		m_argv{ new const CharT*[in_args.size() + 1] } {
 		// Populate m_argv
 		for (size_t index = 0; index != m_args.size(); ++index) {
 			m_argv[index] = m_args[index].c_str();
 		}
+		m_argv[in_args.size()] = nullptr; // last arg is always nullptr
 	}
 
-	const char** argv() const {
+	const CharT** argv() const {
 		return m_argv.get();
 	}
 
@@ -48,8 +50,8 @@ public:
 	}
 
 private:
-	std::vector<std::string> m_args;
+	std::vector<std::basic_string<CharT>> m_args;
-	std::unique_ptr<const char*[]> m_argv;
+	std::unique_ptr<const CharT*[]> m_argv;
 };
 
 TEST(AppParametersTest, null) {
@@ -86,6 +88,21 @@ TEST(AppParametersTest, path_only) {
 	EXPECT_EQ(obj[u8"Path"], u8"/path/to/exe");
 }
 
+TEST(AppParametersTest, path_only_w) {
+	ArgWrapper<wchar_t> args{ L"/path/to/exe" };
+	app_parameters parameters{ args.argc(), args.argv() };
+
+	EXPECT_EQ(parameters.path(), u8"/path/to/exe");
+	EXPECT_TRUE(parameters.arguments().empty());
+	EXPECT_TRUE(parameters.switches().empty());
+	EXPECT_TRUE(parameters.switches_set().empty());
+	EXPECT_TRUE(parameters.values().empty());
+
+	auto obj = parameters.as_object();
+	EXPECT_FALSE(obj.null());
+	EXPECT_EQ(obj[u8"Path"], u8"/path/to/exe");
+}
+
 TEST(AppParametersTest, single_switch) {
 	ArgWrapper args{ "/path/to/exe", "-switch" };
 	app_parameters parameters{ args.argc(), args.argv() };
@@ -279,3 +296,28 @@ TEST(AppParametersTest, switch_and_value) {
 	EXPECT_FALSE(parameters.has_switch(u8"switch2"));
 	EXPECT_EQ(parameters.get_value(u8"key"), u8"value");
 }
+
+TEST(AppParametersTest, switch_and_value_w) {
+	ArgWrapper<wchar_t> args{ L"/path/to/exe", L"--switch", L"-key", L"value" };
+	app_parameters parameters{ args.argc(), args.argv() };
+
+	EXPECT_FALSE(parameters.path().empty());
+	EXPECT_EQ(parameters.arguments().size(), 3U);
+	EXPECT_EQ(parameters.switches().size(), 1U);
+	EXPECT_EQ(parameters.switches_set().size(), 1U);
+	EXPECT_EQ(parameters.values().size(), 1U);
+
+	auto obj = parameters.as_object();
+	std::vector<std::u8string> expected_args{ u8"--switch", u8"-key", u8"value" };
+	std::vector<std::u8string> expected_switches{ u8"switch" };
+	std::map<std::u8string, object> expected_values{ { u8"key", u8"value" } };
+	EXPECT_FALSE(obj.null());
+	EXPECT_EQ(obj[u8"Path"], u8"/path/to/exe");
+	EXPECT_EQ(obj[u8"Args"], expected_args);
+	EXPECT_EQ(obj[u8"Switches"], expected_switches);
+	EXPECT_EQ(obj[u8"Values"], expected_values);
+
+	EXPECT_TRUE(parameters.has_switch(u8"switch"));
+	EXPECT_FALSE(parameters.has_switch(u8"switch2"));
+	EXPECT_EQ(parameters.get_value(u8"key"), u8"value");
+}

src/test/http_query.cpp

@@ -25,7 +25,7 @@ using namespace std::literals;
 // Compile-time tests for constexpr on compilers which support C++20 constexpr std::string
 #ifdef __cpp_lib_constexpr_string
 constexpr std::string query_constexpr(std::string_view in_expression) {
-	std::string result{ in_expression };
+	std::string result{ static_cast<std::string>(in_expression) };
 	jessilib::deserialize_http_query(result);
 	return result;
 }

src/test/unicode_sequence.cpp

@@ -26,7 +26,7 @@ using namespace std::literals;
 // Compile-time tests for constexpr on compilers which support C++20 constexpr std::string
 #ifdef __cpp_lib_constexpr_string
 constexpr std::string cpp_constexpr(std::string_view in_expression) {
-	std::string result{ in_expression };
+	std::string result{ static_cast<std::string>(in_expression) };
 	jessilib::apply_cpp_escape_sequences(result);
 	return result;
 }