diff --git a/core/string_buffer.cpp b/core/string_buffer.cpp new file mode 100644 index 00000000000..195068f8870 --- /dev/null +++ b/core/string_buffer.cpp @@ -0,0 +1,102 @@ +/*************************************************************************/ +/* string_buffer.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */ +/* */ +/* 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. */ +/*************************************************************************/ +#include "string_buffer.h" + +#include + +StringBuffer &StringBuffer::append(CharType p_char) { + reserve(string_length + 2); + current_buffer_ptr()[string_length++] = p_char; + return *this; +} + +StringBuffer &StringBuffer::append(const String &p_string) { + return append(p_string.c_str()); +} + +StringBuffer &StringBuffer::append(const char *p_str) { + int len = strlen(p_str); + reserve(string_length + len + 1); + + CharType *buf = current_buffer_ptr(); + for (const char *c_ptr = p_str; c_ptr; ++c_ptr) { + buf[string_length++] = *c_ptr; + } + return *this; +} + +StringBuffer &StringBuffer::append(const CharType *p_str, int p_clip_to_len) { + int len = 0; + while ((p_clip_to_len < 0 || len < p_clip_to_len) && p_str[len]) { + ++len; + } + reserve(string_length + len + 1); + memcpy(&(current_buffer_ptr()[string_length]), p_str, len * sizeof(CharType)); + string_length += len; + + return *this; +} + +StringBuffer &StringBuffer::reserve(int p_size) { + if (p_size < SHORT_BUFFER_SIZE || p_size < buffer.size()) + return *this; + + bool need_copy = string_length > 0 && buffer.empty(); + buffer.resize(next_power_of_2(p_size)); + if (need_copy) { + memcpy(buffer.ptr(), short_buffer, string_length * sizeof(CharType)); + } + + return *this; +} + +int StringBuffer::length() const { + return string_length; +} + +String StringBuffer::as_string() { + current_buffer_ptr()[string_length] = '\0'; + if (buffer.empty()) { + return String(short_buffer); + } else { + buffer.resize(string_length + 1); + return buffer; + } +} + +double StringBuffer::as_double() { + current_buffer_ptr()[string_length] = '\0'; + return String::to_double(current_buffer_ptr()); +} + +int64_t StringBuffer::as_int() { + current_buffer_ptr()[string_length] = '\0'; + return String::to_int(current_buffer_ptr()); +} diff --git a/core/string_buffer.h b/core/string_buffer.h new file mode 100644 index 00000000000..3f362491489 --- /dev/null +++ b/core/string_buffer.h @@ -0,0 +1,82 @@ +/*************************************************************************/ +/* string_buffer.h */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */ +/* */ +/* 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. */ +/*************************************************************************/ +#ifndef STRING_BUFFER_H +#define STRING_BUFFER_H + +#include "ustring.h" + +class StringBuffer { + static const int SHORT_BUFFER_SIZE = 64; + + CharType short_buffer[SHORT_BUFFER_SIZE]; + String buffer; + int string_length = 0; + + _FORCE_INLINE_ CharType *current_buffer_ptr() { + return static_cast &>(buffer).empty() ? short_buffer : buffer.ptr(); + } + +public: + StringBuffer &append(CharType p_char); + StringBuffer &append(const String &p_string); + StringBuffer &append(const char *p_str); + StringBuffer &append(const CharType *p_str, int p_clip_to_len = -1); + + _FORCE_INLINE_ void operator+=(CharType p_char) { + append(p_char); + } + + _FORCE_INLINE_ void operator+=(const String &p_string) { + append(p_string); + } + + _FORCE_INLINE_ void operator+=(const char *p_str) { + append(p_str); + } + + _FORCE_INLINE_ void operator+=(const CharType *p_str) { + append(p_str); + } + + StringBuffer &reserve(int p_size); + + int length() const; + + String as_string(); + + double as_double(); + int64_t as_int(); + + _FORCE_INLINE_ operator String() { + return as_string(); + } +}; + +#endif diff --git a/core/variant_parser.cpp b/core/variant_parser.cpp index 65c7b7cfeca..d60d10cd3a2 100644 --- a/core/variant_parser.cpp +++ b/core/variant_parser.cpp @@ -29,6 +29,7 @@ /*************************************************************************/ #include "variant_parser.h" +#include "core/string_buffer.h" #include "io/resource_loader.h" #include "os/input_event.h" #include "os/keyboard.h" @@ -176,14 +177,15 @@ Error VariantParser::get_token(Stream *p_stream, Token &r_token, int &line, Stri }; case '#': { - String color_str = "#"; + StringBuffer color_str; + color_str += '#'; while (true) { CharType ch = p_stream->get_char(); if (p_stream->is_eof()) { r_token.type = TK_EOF; return OK; } else if ((ch >= '0' && ch <= '9') || (ch >= 'a' && ch <= 'f') || (ch >= 'A' && ch <= 'F')) { - color_str += String::chr(ch); + color_str += ch; } else { p_stream->saved = ch; @@ -191,7 +193,7 @@ Error VariantParser::get_token(Stream *p_stream, Token &r_token, int &line, Stri } } - r_token.value = Color::html(color_str); + r_token.value = Color::html(color_str.as_string()); r_token.type = TK_COLOR; return OK; }; @@ -296,7 +298,7 @@ Error VariantParser::get_token(Stream *p_stream, Token &r_token, int &line, Stri if (cchar == '-' || (cchar >= '0' && cchar <= '9')) { //a number - String num; + StringBuffer num; #define READING_SIGN 0 #define READING_INT 1 #define READING_DEC 2 @@ -359,7 +361,7 @@ Error VariantParser::get_token(Stream *p_stream, Token &r_token, int &line, Stri if (reading == READING_DONE) break; - num += String::chr(c); + num += c; c = p_stream->get_char(); } @@ -368,19 +370,19 @@ Error VariantParser::get_token(Stream *p_stream, Token &r_token, int &line, Stri r_token.type = TK_NUMBER; if (is_float) - r_token.value = num.to_double(); + r_token.value = num.as_double(); else - r_token.value = num.to_int(); + r_token.value = num.as_int(); return OK; } else if ((cchar >= 'A' && cchar <= 'Z') || (cchar >= 'a' && cchar <= 'z') || cchar == '_') { - String id; + StringBuffer id; bool first = true; while ((cchar >= 'A' && cchar <= 'Z') || (cchar >= 'a' && cchar <= 'z') || cchar == '_' || (!first && cchar >= '0' && cchar <= '9')) { - id += String::chr(cchar); + id += cchar; cchar = p_stream->get_char(); first = false; } @@ -388,7 +390,7 @@ Error VariantParser::get_token(Stream *p_stream, Token &r_token, int &line, Stri p_stream->saved = cchar; r_token.type = TK_IDENTIFIER; - r_token.value = id; + r_token.value = id.as_string(); return OK; } else { r_err_str = "Unexpected character.";