highlight paired bracket, part 1

README.md

@@ -8,8 +8,15 @@ Currently supported features:
 * Can open DUB (dub.json) projects
 * Shows tree with project source files
 * Can open and edit source files from project or file system in multi-tab editor
-* D language source code syntax highlight (basic)
 * Build and run project with DUB
+* Build log highlight and navigation to place of error or warning by clicking on log line
+
+Editor features:
+
+* D language source code syntax highlight (basic)
+* Indent / unindent text with Tab and Shift+Tab
+* Toggle line or block comments by Ctrl+/ and Ctrl+Shift+/
+
 
 ![screenshot](http://buggins.github.io/dlangui/screenshots/screenshot-dlangide.png "screenshot")
 

src/dlangide/ui/dsourceedit.d

@@ -118,6 +118,59 @@ class SimpleDSyntaxHighlighter : SyntaxHighlighter {
         return this;
     }
 
+    static dchar pairedBracket(dchar ch) {
+        switch (ch) {
+            case '(':
+                return ')';
+            case ')':
+                return '(';
+            case '{':
+                return '}';
+            case '}':
+                return '{';
+            case '[':
+                return ']';
+            case ']':
+                return '[';
+            default:
+                return 0; // not a bracket
+        }
+    }
+    static bool isOpenBracket(dchar ch) {
+        switch (ch) {
+            case '(':
+            case '{':
+            case '[':
+                return true;
+            default:
+                return false;
+        }
+    }
+    static bool isCloseBracket(dchar ch) {
+        switch (ch) {
+            case ')':
+            case '}':
+            case ']':
+                return true;
+            default:
+                return false;
+        }
+    }
+
+    /// returns paired bracket {} () [] for char at position p, returns paired char position or p if not found or not bracket
+    override TextPosition findPairedBracket(TextPosition p) {
+        if (p.line < 0 || p.line >= content.length)
+            return p;
+        dstring s = content.line(p.line);
+        if (p.pos < 0 || p.pos >= s.length)
+            return p;
+        dchar ch = s[p.pos];
+        dchar paired = pairedBracket(ch);
+        int dir = isOpenBracket(ch) ? 1 : -1;
+        return p;
+    }
+
+
     /// return true if toggle line comment is supported for file type
     override @property bool supportsToggleLineComment() {
         return true;