diff options
Diffstat (limited to 'core/math/expression.cpp')
| -rw-r--r-- | core/math/expression.cpp | 79 |
1 files changed, 58 insertions, 21 deletions
diff --git a/core/math/expression.cpp b/core/math/expression.cpp index ba40cb4586..a16267cf0a 100644 --- a/core/math/expression.cpp +++ b/core/math/expression.cpp @@ -1,12 +1,42 @@ +/*************************************************************************/ +/* expression.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2018 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 "expression.h" -#include "class_db.h" -#include "func_ref.h" -#include "io/marshalls.h" -#include "math_funcs.h" -#include "os/os.h" -#include "reference.h" -#include "variant_parser.h" +#include "core/class_db.h" +#include "core/func_ref.h" +#include "core/io/marshalls.h" +#include "core/math/math_funcs.h" +#include "core/os/os.h" +#include "core/reference.h" +#include "core/variant_parser.h" const char *Expression::func_name[Expression::FUNC_MAX] = { "sin", @@ -726,6 +756,10 @@ void Expression::exec_func(BuiltinFunc p_func, const Variant **p_inputs, Variant //////// +static bool _is_number(CharType c) { + return (c >= '0' && c <= '9'); +} + Error Expression::_get_token(Token &r_token) { while (true) { @@ -783,17 +817,12 @@ Error Expression::_get_token(Token &r_token) { r_token.type = TK_COLON; return OK; }; - case '.': { - - r_token.type = TK_PERIOD; - return OK; - }; case '$': { r_token.type = TK_INPUT; int index = 0; do { - if (expression[str_ofs] < '0' || expression[str_ofs] > '9') { + if (!_is_number(expression[str_ofs])) { _set_error("Expected number after '$'"); r_token.type = TK_ERROR; return ERR_PARSE_ERROR; @@ -802,7 +831,7 @@ Error Expression::_get_token(Token &r_token) { index += expression[str_ofs] - '0'; str_ofs++; - } while (expression[str_ofs] >= '0' && expression[str_ofs] <= '9'); + } while (_is_number(expression[str_ofs])); r_token.value = index; return OK; @@ -949,14 +978,14 @@ Error Expression::_get_token(Token &r_token) { r_token.type = TK_ERROR; return ERR_PARSE_ERROR; } - if (!((c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F'))) { + if (!(_is_number(c) || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F'))) { _set_error("Malformed hex constant in string"); r_token.type = TK_ERROR; return ERR_PARSE_ERROR; } CharType v; - if (c >= '0' && c <= '9') { + if (_is_number(c)) { v = c - '0'; } else if (c >= 'a' && c <= 'f') { v = c - 'a'; @@ -1002,7 +1031,8 @@ Error Expression::_get_token(Token &r_token) { break; } - if (cchar >= '0' && cchar <= '9') { + CharType next_char = (str_ofs >= expression.length()) ? 0 : expression[str_ofs]; + if (_is_number(cchar) || (cchar == '.' && _is_number(next_char))) { //a number String num; @@ -1023,7 +1053,7 @@ Error Expression::_get_token(Token &r_token) { switch (reading) { case READING_INT: { - if (c >= '0' && c <= '9') { + if (_is_number(c)) { //pass } else if (c == '.') { reading = READING_DEC; @@ -1037,7 +1067,7 @@ Error Expression::_get_token(Token &r_token) { } break; case READING_DEC: { - if (c >= '0' && c <= '9') { + if (_is_number(c)) { } else if (c == 'e') { reading = READING_EXP; @@ -1049,7 +1079,7 @@ Error Expression::_get_token(Token &r_token) { } break; case READING_EXP: { - if (c >= '0' && c <= '9') { + if (_is_number(c)) { exp_beg = true; } else if ((c == '-' || c == '+') && !exp_sign && !exp_beg) { @@ -1084,7 +1114,7 @@ Error Expression::_get_token(Token &r_token) { String id; bool first = true; - while ((cchar >= 'A' && cchar <= 'Z') || (cchar >= 'a' && cchar <= 'z') || cchar == '_' || (!first && cchar >= '0' && cchar <= '9')) { + while ((cchar >= 'A' && cchar <= 'Z') || (cchar >= 'a' && cchar <= 'z') || cchar == '_' || (!first && _is_number(cchar))) { id += String::chr(cchar); cchar = GET_CHAR(); @@ -1146,6 +1176,12 @@ Error Expression::_get_token(Token &r_token) { } return OK; + + } else if (cchar == '.') { + // Handled down there as we support '.[0-9]' as numbers above + r_token.type = TK_PERIOD; + return OK; + } else { _set_error("Unexpected character."); r_token.type = TK_ERROR; @@ -1153,6 +1189,7 @@ Error Expression::_get_token(Token &r_token) { } } } +#undef GET_CHAR } r_token.type = TK_ERROR; |