From f497b5aaa287f9f2767220934706f091e1a06d2f Mon Sep 17 00:00:00 2001
From: nyamatongwe <unknown>
Date: Sun, 21 Feb 2010 21:35:24 +0000
Subject: Patch from Haimag Ren adds folding of line comments.

---
 src/LexVerilog.cxx | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

(limited to 'src/LexVerilog.cxx')

diff --git a/src/LexVerilog.cxx b/src/LexVerilog.cxx
index 3fd0fc35c..8b531bb7e 100644
--- a/src/LexVerilog.cxx
+++ b/src/LexVerilog.cxx
@@ -150,6 +150,22 @@ static bool IsStreamCommentStyle(int style) {
 	return style == SCE_V_COMMENT;
 }
 
+static bool IsCommentLine(int line, Accessor &styler) {
+	int pos = styler.LineStart(line);
+	int eolPos = styler.LineStart(line + 1) - 1;
+	for (int i = pos; i < eolPos; i++) {
+		char ch = styler[i];
+		char chNext = styler.SafeGetCharAt(i + 1);
+		int style = styler.StyleAt(i);
+		if (ch == '/' && chNext == '/' &&
+		   (style == SCE_V_COMMENTLINE || style == SCE_V_COMMENTLINEBANG)) {
+			return true;
+		} else if (!IsASpaceOrTab(ch)) {
+			return false;
+		}
+	}
+	return false;
+}
 // Store both the current line's fold level and the next lines in the
 // level store to make it easy to pick up with each increment
 // and to make it possible to fiddle the current level for "} else {".
@@ -195,6 +211,15 @@ static void FoldNoBoxVerilogDoc(unsigned int startPos, int length, int initStyle
 				levelNext--;
 			}
 		}
+		if (foldComment && atEOL && IsCommentLine(lineCurrent, styler))
+		{
+			if (!IsCommentLine(lineCurrent - 1, styler)
+			    && IsCommentLine(lineCurrent + 1, styler))
+				levelNext++;
+			else if (IsCommentLine(lineCurrent - 1, styler)
+			         && !IsCommentLine(lineCurrent+1, styler))
+				levelNext--;
+		}
 		if (foldComment && (style == SCE_V_COMMENTLINE)) {
 			if ((ch == '/') && (chNext == '/')) {
 				char chNext2 = styler.SafeGetCharAt(i + 2);
-- 
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