From d327f75392b97bee4ad3debd4560cc7c06fc68ab Mon Sep 17 00:00:00 2001
From: Ian <ianb96@gmail.com>
Date: Fri, 12 Jan 2018 00:25:04 -0500
Subject: [PATCH] TextEdit folding over unindented comments

---
 scene/gui/text_edit.cpp | 42 +++++++++++++++++++++++++++++++++++------
 scene/gui/text_edit.h   |  3 ++-
 2 files changed, 38 insertions(+), 7 deletions(-)

diff --git a/scene/gui/text_edit.cpp b/scene/gui/text_edit.cpp
index aa4310da462..55ac324af39 100644
--- a/scene/gui/text_edit.cpp
+++ b/scene/gui/text_edit.cpp
@@ -217,7 +217,7 @@ void TextEdit::Text::_update_line_cache(int p_line) const {
 	}
 }
 
-const Map<int, TextEdit::Text::ColorRegionInfo> &TextEdit::Text::get_color_region_info(int p_line) {
+const Map<int, TextEdit::Text::ColorRegionInfo> &TextEdit::Text::get_color_region_info(int p_line) const {
 
 	static Map<int, ColorRegionInfo> cri;
 	ERR_FAIL_INDEX_V(p_line, text.size(), cri);
@@ -4661,8 +4661,6 @@ int TextEdit::get_indent_level(int p_line) const {
 			tab_count++;
 		} else if (text[p_line][i] == ' ') {
 			whitespace_count++;
-		} else if (text[p_line][i] == '#') {
-			break;
 		} else {
 			break;
 		}
@@ -4670,6 +4668,31 @@ int TextEdit::get_indent_level(int p_line) const {
 	return tab_count + whitespace_count / indent_size;
 }
 
+bool TextEdit::is_line_comment(int p_line) const {
+
+	// checks to see if this line is the start of a comment
+	ERR_FAIL_INDEX_V(p_line, text.size(), false);
+
+	const Map<int, Text::ColorRegionInfo> &cri_map = text.get_color_region_info(p_line);
+
+	int line_length = text[p_line].size();
+	for (int i = 0; i < line_length - 1; i++) {
+		if (_is_symbol(text[p_line][i]) && cri_map.has(i)) {
+			const Text::ColorRegionInfo &cri = cri_map[i];
+			if (color_regions[cri.region].begin_key == "#" || color_regions[cri.region].begin_key == "//") {
+				return true;
+			} else {
+				return false;
+			}
+		} else if (_is_whitespace(text[p_line][i])) {
+			continue;
+		} else {
+			break;
+		}
+	}
+	return false;
+}
+
 bool TextEdit::can_fold(int p_line) const {
 
 	ERR_FAIL_INDEX_V(p_line, text.size(), false);
@@ -4683,6 +4706,8 @@ bool TextEdit::can_fold(int p_line) const {
 		return false;
 	if (is_line_hidden(p_line))
 		return false;
+	if (is_line_comment(p_line))
+		return false;
 
 	int start_indent = get_indent_level(p_line);
 
@@ -4690,10 +4715,13 @@ bool TextEdit::can_fold(int p_line) const {
 		if (text[i].size() == 0)
 			continue;
 		int next_indent = get_indent_level(i);
-		if (next_indent > start_indent)
+		if (is_line_comment(i)) {
+			continue;
+		} else if (next_indent > start_indent) {
 			return true;
-		else
+		} else {
 			return false;
+		}
 	}
 
 	return false;
@@ -4722,7 +4750,9 @@ void TextEdit::fold_line(int p_line) {
 	int last_line = start_indent;
 	for (int i = p_line + 1; i < text.size(); i++) {
 		if (text[i].strip_edges().size() != 0) {
-			if (get_indent_level(i) > start_indent) {
+			if (is_line_comment(i)) {
+				continue;
+			} else if (get_indent_level(i) > start_indent) {
 				last_line = i;
 			} else {
 				break;
diff --git a/scene/gui/text_edit.h b/scene/gui/text_edit.h
index 88121a06f0e..d4f97cc0ec7 100644
--- a/scene/gui/text_edit.h
+++ b/scene/gui/text_edit.h
@@ -162,7 +162,7 @@ class TextEdit : public Control {
 		void set_color_regions(const Vector<ColorRegion> *p_regions) { color_regions = p_regions; }
 		int get_line_width(int p_line) const;
 		int get_max_width(bool p_exclude_hidden = false) const;
-		const Map<int, ColorRegionInfo> &get_color_region_info(int p_line);
+		const Map<int, ColorRegionInfo> &get_color_region_info(int p_line) const;
 		void set(int p_line, const String &p_text);
 		void set_marked(int p_line, bool p_marked) { text[p_line].marked = p_marked; }
 		bool is_marked(int p_line) const { return text[p_line].marked; }
@@ -449,6 +449,7 @@ public:
 	void indent_left();
 	void indent_right();
 	int get_indent_level(int p_line) const;
+	bool is_line_comment(int p_line) const;
 
 	inline void set_scroll_pass_end_of_file(bool p_enabled) {
 		scroll_past_end_of_file_enabled = p_enabled;