small code cleanup

src/dlib

@@ -1 +1 @@
-Subproject commit ca5e84f8b9c6f96abe8151e655ebd3f923ced598
+Subproject commit 2af4a293148aadac84d9fec3505d2adcdb747298

src/editor/buffer.d

@@ -104,9 +104,9 @@ CountLF(u8[] data)
 }
 
 void
-Fix(FlatBuffer* buffer) 
+Fix(FlatBuffer* fb) 
 {
-	with(buffer)
+	with(fb)
 	{
 		Reset(&ls_arena);
 		line_starts = AllocArray!(LineStart)(&ls_arena, lf_count+1);
@@ -158,7 +158,7 @@ Fix(FlatBuffer* buffer)
 
 		dirty = false;
 
-		TokenizeD(buffer);
+		TokenizeD(fb);
 	}
 }
 
@@ -235,9 +235,9 @@ Insert(FlatBuffer* fb, u8[] insert, u64 length, u64 pos)
 	}
 
 	u64 temp_len = fb.length-pos;
-	u8[] temp = AllocArray!(u8)(&fb.arena, temp_len);
 
-	temp[0 .. temp_len] = fb.data[pos .. pos+temp_len];
+	u8[] temp = AllocCopySlice!(u8)(&fb.arena, fb.data, pos, temp_len);
+
 	fb.data[pos .. pos+length] = insert[0 .. length];
 	pos += length;
 	fb.data[pos .. pos+temp_len] = temp[0 .. temp_len];
@@ -252,9 +252,9 @@ Insert(FlatBuffer* fb, u8[] insert, u64 length, u64 pos)
 }
 
 void
-Insert(FlatBuffer* buffer, u8[] insert, u64 length)
+Insert(FlatBuffer* fb, u8[] insert, u64 length)
 {
-	Insert(buffer, insert, length, buffer.buf_pos);
+	Insert(fb, insert, length, fb.buf_pos);
 }
 
 pragma(inline) u64
@@ -321,13 +321,22 @@ LineLength(FlatBuffer* fb, u64 line)
 }
 
 void
-GetLines(FlatBuffer* buffer, LineBuffers* linebufs, u64 length)
+GetLines(FlatBuffer* fb, LineBuffers* linebufs, u64 length)
 {
-	GetLines(buffer, linebufs, buffer.offset, length);
+	GetLines(fb, linebufs, fb.offset, length);
+}
+
+pragma(inline) void
+SliceLineBuffer(FlatBuffer* fb, LineBuffers* lbufs, LineBuffer* lbuf, u64 start, u64 len)
+{
+	lbuf.text  = fb.data[start .. start+len];
+	lbuf.style = !Nil(fb.tk.first) ? fb.tk.buffer[start .. start+len] : [];
+
+	lbufs.count += 1;
 }
 
 void
-GetLines(FlatBuffer* buffer, LineBuffers* linebufs, u64 start_line, u64 length)
+GetLines(FlatBuffer* fb, LineBuffers* linebufs, u64 start_line, u64 length)
 {
 	assert(linebufs != null, "GetLines failure: linebufs is null");
 
@@ -335,60 +344,36 @@ GetLines(FlatBuffer* buffer, LineBuffers* linebufs, u64 start_line, u64 length)
 	linebufs.first = Alloc!(LineBuffer)(&linebufs.arena);
 	linebufs.count = 0;
 
-	u64 total_lines = buffer.line_starts.length;
+	u64 total_lines = fb.line_starts.length;
 	start_line = Min(start_line, total_lines);
 	u64 end_line = Min(start_line + length, total_lines);
 
-	if(buffer.length == 0)
+	if(fb.length == 0)
 	{
 		linebufs.first.text = AllocArray!(u8)(&linebufs.arena, 1);
-		linebufs.first.text[0] = 0;
 	}
-	else if(start_line == end_line) with(buffer)
+	else if(start_line == end_line) with(fb)
 	{
-		u64 start_of_line = line_starts[start_line].pos;
-		u64 len = LineLength(buffer, start_line);
-
-		linebufs.first.text = AllocArray!(u8)(&linebufs.arena, len);
-		linebufs.first.text = data[start_of_line .. start_of_line+len];
-
-		if(!Nil(buffer.tk.first))
-		{
-			linebufs.first.style = Alloc!(TS)(&linebufs.arena, len);
-			linebufs.first.style = buffer.tk.buffer[start_of_line .. start_of_line+len];
-		}
-
-		linebufs.count += 1;
+		SliceLineBuffer(fb, linebufs, linebufs.first, line_starts[start_line].pos, LineLength(fb, start_line));
 	}
 	else with(linebufs)
 	{
 		LineBuffer* current = first;
 		for(u64 i = start_line; i < end_line; i += 1)
 		{
-			u64 start = buffer.line_starts[i].pos;
-			u64 len = LineLength(buffer, i);
+			u64 start = fb.line_starts[i].pos;
+			u64 len = LineLength(fb, i);
 
 			if(len > 0)
 			{
-				current.text = Alloc!(u8)(&arena, len);
-				current.text[0 .. len] = buffer.data[start .. start+len];
-				
-				if(!Nil(buffer.tk.first))
-				{
-					current.style = Alloc!(TS)(&arena, len);
-					current.style[0 .. len] = buffer.tk.buffer[start .. start+len];
-				}
-
-				count += 1;
-
+				SliceLineBuffer(fb, linebufs, current, start, len);
 				current.next = Alloc!(LineBuffer)(&arena);
 				current = current.next;
 			}
 
-			if(i == buffer.lf_count && buffer.data[buffer.length-1] == '\n')
+			if(i == fb.lf_count && fb.data[fb.length-1] == '\n')
 			{
 				current.text = AllocArray!(u8)(&arena, 1);
-				current.text[0] = 0;
 				count += 1;
 
 				current.next = Alloc!(LineBuffer)(&arena);
@@ -639,47 +624,47 @@ AdjustOffset(FlatBuffer* fb)
 }
 
 void
-Backspace(FlatBuffer* buffer)
+Backspace(FlatBuffer* fb)
 {
-	if(buffer.buf_pos-1 >= 0)
+	if(fb.buf_pos-1 >= 0)
 	{
-		buffer.buf_pos -= 1;
-		Delete(buffer, 1, buffer.buf_pos);
+		fb.buf_pos -= 1;
+		Delete(fb, 1, fb.buf_pos);
 	}
 }
 
 void
-Delete(FlatBuffer* buffer, u64 length, u64 pos)
+Delete(FlatBuffer* fb, u64 length, u64 pos)
 {
 	u64 end = pos+length;
-	assert(end <= buffer.length, "Delete failure: pos+length is not in range");
+	assert(end <= fb.length, "Delete failure: pos+length is not in range");
 
-	for(u64 i = pos; i < buffer.length && i < pos+length; i += 1)
+	for(u64 i = pos; i < fb.length && i < pos+length; i += 1)
 	{
-		if(buffer.data[i] == '\n')
+		if(fb.data[i] == '\n')
 		{
-			buffer.lf_count -= 1;
+			fb.lf_count -= 1;
 		}
 	}
 
 	u8[] temp;
-	if(end != buffer.length)
+	if(end != fb.length)
 	{
-		temp = AllocArray!(u8)(&buffer.arena, buffer.length-end);
-		temp[0 .. temp.length] = buffer.data[end .. buffer.length];
-		buffer.data[pos .. pos+temp.length] = temp[0 .. temp.length];
+		temp = AllocArray!(u8)(&fb.arena, fb.length-end);
+		temp[0 .. temp.length] = fb.data[end .. fb.length];
+		fb.data[pos .. pos+temp.length] = temp[0 .. temp.length];
 	}
 
-	buffer.length -= length;
+	fb.length -= length;
 
-	Fix(buffer);
+	Fix(fb);
 }
 
 void
-Replace(FlatBuffer* buffer, u8[] insert, u64 length, u64 pos, u64 delete_length)
+Replace(FlatBuffer* fb, u8[] insert, u64 length, u64 pos, u64 delete_length)
 {
-	Delete(buffer, delete_length, pos);
-	Insert(buffer, insert, insert.length, pos);
+	Delete(fb, delete_length, pos);
+	Insert(fb, insert, insert.length, pos);
 }
 
 unittest