Add utils::is_double and utils::is_integer (46239e45) · Commits · 郑智淋 / lammps

src/utils.cpp

+34 −0

Changes for src/utils.cpp: 34 added lines, 0 removed lines.
Original line number	Diff line number	Diff line
		@@ -348,6 +348,40 @@ size_t utils::count_words(const std::string & text, const std::string & seperato
		return words.count();
		}

		/* ----------------------------------------------------------------------
		Return whether string is a valid integer number
		------------------------------------------------------------------------- */

		bool utils::is_integer(const std::string & str) {
		if (str.size() == 0) {
		return false;
		}

		for (auto c : str) {
		if (isdigit(c) \|\| c == '-' \|\| c == '+') continue;
		return false;
		}
		return true;
		}

		/* ----------------------------------------------------------------------
		Return whether string is a valid floating-point number
		------------------------------------------------------------------------- */

		bool utils::is_double(const std::string & str) {
		if (str.size() == 0) {
		return false;
		}

		for (auto c : str) {
		if (isdigit(c)) continue;
		if (c == '-' \|\| c == '+' \|\| c == '.') continue;
		if (c == 'e' \|\| c == 'E') continue;
		return false;
		}
		return true;
		}

		/* ------------------------------------------------------------------ */

		extern "C" {

+14 −0

Changes for src/utils.h: 14 added lines, 0 removed lines.
Original line number	Diff line number	Diff line
		@@ -142,6 +142,20 @@ namespace LAMMPS_NS {
		* \return number of words found
		*/
		size_t count_words(const std::string & text, const std::string & seperators = " \t\r\n\f");

		/**
		* \brief Check if string can be converted to valid integer
		* \param text string that should be checked
		* \return true, if string contains valid integer, false otherwise
		*/
		bool is_integer(const std::string & str);

		/**
		* \brief Check if string can be converted to valid floating-point number
		* \param text string that should be checked
		* \return true, if string contains valid floating-point number, false otherwise
		*/
		bool is_double(const std::string & str);
		}
		}

+36 −0

Changes for unittest/utils/test_utils.cpp: 36 added lines, 0 removed lines.
Original line number	Diff line number	Diff line
		@@ -14,3 +14,39 @@ TEST(Utils, trim_comment) {
		TEST(Utils, count_words) {
		ASSERT_EQ(utils::count_words("some text # comment"), 2);
		}

		TEST(Utils, valid_integer) {
		ASSERT_TRUE(utils::is_integer("10"));
		}

		TEST(Utils, valid_double) {
		ASSERT_TRUE(utils::is_double("10.0"));
		}

		TEST(Utils, empty_not_an_integer) {
		ASSERT_FALSE(utils::is_integer(""));
		}

		TEST(Utils, empty_not_a_double) {
		ASSERT_FALSE(utils::is_double(""));
		}

		TEST(Utils, double_not_an_integer) {
		ASSERT_FALSE(utils::is_integer("10.0"));
		}

		TEST(Utils, integer_is_double) {
		ASSERT_TRUE(utils::is_double("10"));
		}

		TEST(Utils, is_double_with_exponential) {
		ASSERT_TRUE(utils::is_double("10e22"));
		}

		TEST(Utils, is_double_with_neg_exponential) {
		ASSERT_TRUE(utils::is_double("10e-22"));
		}

		TEST(Utils, signed_double_and_exponential) {
		ASSERT_TRUE(utils::is_double("-10E-22"));
		}