Learn PEGTL a little.

author: Li Jin <dragon-fly@qq.com> 2017-07-05 14:30:02 +0800
committer: Li Jin <dragon-fly@qq.com> 2017-07-05 14:30:02 +0800
commit: 2dc481058998344b7f97721d47987be3ac053768 (patch)
tree: 9afd61edfc6d3f079262a3086ebef8cb70943a31 /MoonParser/slice.h
parent: 2d074d650ead2142857ff9f8b192b061d1506eca (diff)
download: yuescript-2dc481058998344b7f97721d47987be3ac053768.tar.gz
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1 files changed, 157 insertions, 0 deletions
diff --git a/MoonParser/slice.h b/MoonParser/slice.h
new file mode 100644
index 0000000..60e0ae1
--- /dev/null
+++ b/MoonParser/slice.h
@@ -0,0 +1,157 @@
+/**
+ * Copyright (C) 2017, IppClub. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#pragma once
+#include <cassert>
+#include <cstring>
+#include <string>
+#include <list>
+namespace silly {
+namespace slice {
+// A Slice object wraps a "const char *" or a "const std::string&" but
+// without copying their contents.
+class Slice {
+ private:
+  struct TrustedInitTag {};
+  constexpr Slice(const char* s, size_t n, TrustedInitTag) : str_(s), len_(n) {}
+ public:
+  // implicit conversion from std::string to Slice
+  Slice(const std::string &s) : Slice(s.data(), s.size()) {}
+  Slice(const char *s) : Slice(s, s ? strlen(s) : 0) {}
+  Slice(const char *s, size_t n) : str_(s), len_(n) {}
+  Slice(std::pair<const char*,size_t> sp) : str_(sp.first), len_(sp.second) {}
+  constexpr Slice(std::nullptr_t p = nullptr) : str_(nullptr), len_(0) {}
+  operator std::string() const {
+        return std::string(str_, len_);
+  }
+  const char &operator[](size_t n) const {
+    return str_[n];
+  }
+  size_t size() const {
+    return len_;
+  }
+  const char *rawData() const {
+    return str_;
+  }
+  std::string toString() const {
+    return std::string(str_, len_);
+  }
+  bool empty() const {
+    return len_ == 0;
+  }
+  // similar with std::string::compare
+  // http://en.cppreference.com/w/cpp/string/basic_string/compare
+  int compare(const Slice &rhs) const;
+  void skip(size_t n) {
+    assert(n <= len_);
+    str_ += n;
+    len_ -= n;
+  }
+  void copyTo(char *dest, bool appendEndingNull = true) const {
+    memcpy(dest, str_, len_);
+    if (appendEndingNull) {
+      dest[len_] = '\0';
+    }
+  }
+  Slice &trimSpace() {
+    assert(len_ > 0);
+    size_t start = 0, end = len_ - 1;
+    while (start < end && isspace(str_[start])) {
+      start++;
+    }
+    while (start < end && isspace(str_[end])) {
+      end--;
+    }
+    str_ += start;
+    len_ = end - start + 1;
+    return *this;
+  }
+  typedef const char *const_iterator;
+  const_iterator begin() const {
+    return str_;
+  }
+  const_iterator end() const {
+    return str_ + len_;
+  }
+  std::string getFilePath() const;
+  std::string getFileName() const;
+  std::string getFileExtension() const;
+  std::string toLower() const;
+  std::string toUpper() const;
+  std::list<Slice> split(const Slice& delimer) const;
+  static const std::string Empty;
+  static float stof(const Slice& str);
+  static int stoi(const Slice& str);
+  constexpr friend Slice operator"" _slice(const char* s, size_t n);
+ private:
+  const char *str_;
+  size_t len_;
+};
+inline Slice trimSpace(const Slice &s) {
+  Slice tmp = s;
+  return tmp.trimSpace();
+}
+inline bool operator==(const Slice &lhs, const Slice &rhs) {
+  return lhs.compare(rhs) == 0;
+}
+inline bool operator!=(const Slice &lhs, const Slice &rhs) {
+  return !(lhs == rhs);
+}
+inline std::string operator+(const std::string& lhs, const Slice &rhs) {
+  return lhs + rhs.toString();
+}
+constexpr Slice operator"" _slice(const char* s, size_t n) {
+        return Slice(s, n, Slice::TrustedInitTag{});
+}
+} // namespace slice
+}  // namespace silly
author	Li Jin <dragon-fly@qq.com>	2017-07-05 14:30:02 +0800
committer	Li Jin <dragon-fly@qq.com>	2017-07-05 14:30:02 +0800
commit	2dc481058998344b7f97721d47987be3ac053768 (patch)
tree	9afd61edfc6d3f079262a3086ebef8cb70943a31 /MoonParser/slice.h
parent	2d074d650ead2142857ff9f8b192b061d1506eca (diff)
download	yuescript-2dc481058998344b7f97721d47987be3ac053768.tar.gz yuescript-2dc481058998344b7f97721d47987be3ac053768.tar.bz2 yuescript-2dc481058998344b7f97721d47987be3ac053768.zip

diff --git a/MoonParser/slice.h b/MoonParser/slice.h new file mode 100644 index 0000000..60e0ae1 --- /dev/null +++ b/MoonParser/slice.h
@@ -0,0 +1,157 @@
	1	/**
	2	* Copyright (C) 2017, IppClub. All rights reserved.
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a copy
	5	* of this software and associated documentation files (the "Software"), to deal
	6	* in the Software without restriction, including without limitation the rights
	7	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	8	* copies of the Software, and to permit persons to whom the Software is
	9	* furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	17	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	18	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	19	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	20	* SOFTWARE.
	21	*/
	22
	23	#pragma once
	24
	25	#include <cassert>
	26	#include <cstring>
	27	#include <string>
	28	#include <list>
	29
	30	namespace silly {
	31
	32	namespace slice {
	33	// A Slice object wraps a "const char *" or a "const std::string&" but
	34	// without copying their contents.
	35	class Slice {
	36	private:
	37	struct TrustedInitTag {};
	38	constexpr Slice(const char* s, size_t n, TrustedInitTag) : str_(s), len_(n) {}
	39
	40	public:
	41	// implicit conversion from std::string to Slice
	42	Slice(const std::string &s) : Slice(s.data(), s.size()) {}
	43
	44	Slice(const char *s) : Slice(s, s ? strlen(s) : 0) {}
	45
	46	Slice(const char *s, size_t n) : str_(s), len_(n) {}
	47
	48	Slice(std::pair<const char*,size_t> sp) : str_(sp.first), len_(sp.second) {}
	49
	50	constexpr Slice(std::nullptr_t p = nullptr) : str_(nullptr), len_(0) {}
	51
	52	operator std::string() const {
	53	return std::string(str_, len_);
	54	}
	55
	56	const char &operator[](size_t n) const {
	57	return str_[n];
	58	}
	59
	60	size_t size() const {
	61	return len_;
	62	}
	63
	64	const char *rawData() const {
	65	return str_;
	66	}
	67
	68	std::string toString() const {
	69	return std::string(str_, len_);
	70	}
	71
	72	bool empty() const {
	73	return len_ == 0;
	74	}
	75
	76	// similar with std::string::compare
	77	// http://en.cppreference.com/w/cpp/string/basic_string/compare
	78	int compare(const Slice &rhs) const;
	79
	80	void skip(size_t n) {
	81	assert(n <= len_);
	82	str_ += n;
	83	len_ -= n;
	84	}
	85
	86	void copyTo(char *dest, bool appendEndingNull = true) const {
	87	memcpy(dest, str_, len_);
	88	if (appendEndingNull) {
	89	dest[len_] = '\0';
	90	}
	91	}
	92
	93	Slice &trimSpace() {
	94	assert(len_ > 0);
	95	size_t start = 0, end = len_ - 1;
	96	while (start < end && isspace(str_[start])) {
	97	start++;
	98	}
	99	while (start < end && isspace(str_[end])) {
	100	end--;
	101	}
	102	str_ += start;
	103	len_ = end - start + 1;
	104	return *this;
	105	}
	106
	107	typedef const char *const_iterator;
	108
	109	const_iterator begin() const {
	110	return str_;
	111	}
	112
	113	const_iterator end() const {
	114	return str_ + len_;
	115	}
	116
	117	std::string getFilePath() const;
	118	std::string getFileName() const;
	119	std::string getFileExtension() const;
	120	std::string toLower() const;
	121	std::string toUpper() const;
	122	std::list<Slice> split(const Slice& delimer) const;
	123
	124	static const std::string Empty;
	125	static float stof(const Slice& str);
	126	static int stoi(const Slice& str);
	127
	128	constexpr friend Slice operator"" _slice(const char* s, size_t n);
	129	private:
	130	const char *str_;
	131	size_t len_;
	132	};
	133
	134	inline Slice trimSpace(const Slice &s) {
	135	Slice tmp = s;
	136	return tmp.trimSpace();
	137	}
	138
	139	inline bool operator==(const Slice &lhs, const Slice &rhs) {
	140	return lhs.compare(rhs) == 0;
	141	}
	142
	143	inline bool operator!=(const Slice &lhs, const Slice &rhs) {
	144	return !(lhs == rhs);
	145	}
	146
	147	inline std::string operator+(const std::string& lhs, const Slice &rhs) {
	148	return lhs + rhs.toString();
	149	}
	150
	151	constexpr Slice operator"" _slice(const char* s, size_t n) {
	152	return Slice(s, n, Slice::TrustedInitTag{});
	153	}
	154
	155	} // namespace slice
	156
	157	} // namespace silly