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Diffstat (limited to 'modules/gdscript/gdscript_highlighter.cpp')
| -rw-r--r-- | modules/gdscript/gdscript_highlighter.cpp | 278 |
1 files changed, 278 insertions, 0 deletions
diff --git a/modules/gdscript/gdscript_highlighter.cpp b/modules/gdscript/gdscript_highlighter.cpp new file mode 100644 index 0000000000..5b8b652c29 --- /dev/null +++ b/modules/gdscript/gdscript_highlighter.cpp @@ -0,0 +1,278 @@ +/*************************************************************************/ +/* gdscript_highlighter.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 "gdscript_highlighter.h" +#include "scene/gui/text_edit.h" + +inline bool _is_symbol(CharType c) { + + return is_symbol(c); +} + +static bool _is_text_char(CharType c) { + + return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9') || c == '_'; +} + +static bool _is_whitespace(CharType c) { + return c == '\t' || c == ' '; +} + +static bool _is_char(CharType c) { + + return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_'; +} + +static bool _is_number(CharType c) { + return (c >= '0' && c <= '9'); +} + +static bool _is_hex_symbol(CharType c) { + return ((c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F')); +} + +Map<int, TextEdit::HighlighterInfo> GDScriptSyntaxHighlighter::_get_line_syntax_highlighting(int p_line) { + Map<int, TextEdit::HighlighterInfo> color_map; + + bool prev_is_char = false; + bool prev_is_number = false; + bool in_keyword = false; + bool in_word = false; + bool in_function_name = false; + bool in_member_variable = false; + bool is_hex_notation = false; + Color keyword_color; + Color color; + + int in_region = -1; + int deregion = 0; + for (int i = 0; i < p_line; i++) { + int ending_color_region = text_editor->_get_line_ending_color_region(i); + if (in_region == -1) { + in_region = ending_color_region; + } else if (in_region == ending_color_region) { + in_region = -1; + } else { + const Map<int, TextEdit::Text::ColorRegionInfo> &cri_map = text_editor->_get_line_color_region_info(i); + for (const Map<int, TextEdit::Text::ColorRegionInfo>::Element *E = cri_map.front(); E; E = E->next()) { + const TextEdit::Text::ColorRegionInfo &cri = E->get(); + if (cri.region == in_region) { + in_region = -1; + } + } + } + } + + const Map<int, TextEdit::Text::ColorRegionInfo> cri_map = text_editor->_get_line_color_region_info(p_line); + const String &str = text_editor->get_line(p_line); + Color prev_color; + for (int j = 0; j < str.length(); j++) { + TextEdit::HighlighterInfo highlighter_info; + + if (deregion > 0) { + deregion--; + if (deregion == 0) { + in_region = -1; + } + } + + if (deregion != 0) { + if (color != prev_color) { + prev_color = color; + highlighter_info.color = color; + color_map[j] = highlighter_info; + } + continue; + } + + color = font_color; + + bool is_char = _is_text_char(str[j]); + bool is_symbol = _is_symbol(str[j]); + bool is_number = _is_number(str[j]); + + // allow ABCDEF in hex notation + if (is_hex_notation && (_is_hex_symbol(str[j]) || is_number)) { + is_number = true; + } else { + is_hex_notation = false; + } + + // check for dot or underscore or 'x' for hex notation in floating point number + if ((str[j] == '.' || str[j] == 'x' || str[j] == '_') && !in_word && prev_is_number && !is_number) { + is_number = true; + is_symbol = false; + is_char = false; + + if (str[j] == 'x' && str[j - 1] == '0') { + is_hex_notation = true; + } + } + + if (!in_word && _is_char(str[j]) && !is_number) { + in_word = true; + } + + if ((in_keyword || in_word) && !is_hex_notation) { + is_number = false; + } + + if (is_symbol && str[j] != '.' && in_word) { + in_word = false; + } + + if (is_symbol && cri_map.has(j)) { + const TextEdit::Text::ColorRegionInfo &cri = cri_map[j]; + + if (in_region == -1) { + if (!cri.end) { + in_region = cri.region; + } + } else { + TextEdit::ColorRegion cr = text_editor->_get_color_region(cri.region); + if (in_region == cri.region && !cr.line_only) { //ignore otherwise + if (cri.end || cr.eq) { + deregion = cr.eq ? cr.begin_key.length() : cr.end_key.length(); + } + } + } + } + + if (!is_char) { + in_keyword = false; + } + + if (in_region == -1 && !in_keyword && is_char && !prev_is_char) { + + int to = j; + while (to < str.length() && _is_text_char(str[to])) + to++; + + String word = str.substr(j, to - j); + Color col = Color(); + if (text_editor->has_keyword_color(word)) { + col = text_editor->get_keyword_color(word); + } else if (text_editor->has_member_color(word)) { + col = text_editor->get_member_color(word); + for (int k = j - 1; k >= 0; k--) { + if (str[k] == '.') { + col = Color(); //member indexing not allowed + break; + } else if (str[k] > 32) { + break; + } + } + } + + if (col != Color()) { + in_keyword = true; + keyword_color = col; + } + } + + if (!in_function_name && in_word && !in_keyword) { + + int k = j; + while (k < str.length() && !_is_symbol(str[k]) && str[k] != '\t' && str[k] != ' ') { + k++; + } + + // check for space between name and bracket + while (k < str.length() && (str[k] == '\t' || str[k] == ' ')) { + k++; + } + + if (str[k] == '(') { + in_function_name = true; + } + } + + if (!in_function_name && !in_member_variable && !in_keyword && !is_number && in_word) { + int k = j; + while (k > 0 && !_is_symbol(str[k]) && str[k] != '\t' && str[k] != ' ') { + k--; + } + + if (str[k] == '.') { + in_member_variable = true; + } + } + + if (is_symbol) { + in_function_name = false; + in_member_variable = false; + } + + if (in_region >= 0) + color = text_editor->_get_color_region(in_region).color; + else if (in_keyword) + color = keyword_color; + else if (in_member_variable) + color = member_color; + else if (in_function_name) + color = function_color; + else if (is_symbol) + color = symbol_color; + else if (is_number) + color = number_color; + + prev_is_char = is_char; + prev_is_number = is_number; + + if (color != prev_color) { + prev_color = color; + highlighter_info.color = color; + color_map[j] = highlighter_info; + } + } + return color_map; +} + +String GDScriptSyntaxHighlighter::get_name() { + return "GDScript"; +} + +List<String> GDScriptSyntaxHighlighter::get_supported_languages() { + List<String> languages; + languages.push_back("GDScript"); + return languages; +} + +void GDScriptSyntaxHighlighter::_update_cache() { + font_color = text_editor->get_color("font_color"); + symbol_color = text_editor->get_color("symbol_color"); + function_color = text_editor->get_color("function_color"); + number_color = text_editor->get_color("number_color"); + member_color = text_editor->get_color("member_variable_color"); +} + +SyntaxHighlighter *GDScriptSyntaxHighlighter::create() { + return memnew(GDScriptSyntaxHighlighter); +} |