Better formatting for ternary expressions

libdparse

@@ -1 +1 @@
-Subproject commit f5c30c0528a81cecaed731272747c9bbfb68a355
+Subproject commit bce47174cc2ea6cfd26d007a9c41108e4fb28f0e

src/dfmt.d

@@ -266,7 +266,8 @@ private:
             switch (current.type)
             {
             case tok!"*":
-                if (!assumeSorted(astInformation.spaceAfterLocations).equalRange(current.index).empty)
+                if (!assumeSorted(astInformation.spaceAfterLocations)
+                    .equalRange(current.index).empty)
                 {
                     writeToken();
                     write(" ");
@@ -287,6 +288,17 @@ private:
             case tok!"(":
                 writeParens();
                 break;
+            case tok!":":
+                if (!assumeSorted(astInformation.ternaryColonLocations)
+                    .equalRange(current.index).empty)
+                {
+                    write(" ");
+                    writeToken();
+                    write(" ");
+                }
+                else
+                    writeToken();
+                break;
             case tok!"@":
             case tok!"!":
             case tok!"...":
@@ -294,7 +306,6 @@ private:
             case tok!"++":
             case tok!"--":
             case tok!"$":
-            case tok!":":
                 writeToken();
                 break;
             case tok!"]":
@@ -769,6 +780,9 @@ struct ASTInformation
 
     /// Locations of unary operators
     size_t[] unaryLocations;
+
+    /// Locations of ':' operators in ternary expressions
+    size_t[] ternaryColonLocations;
 }
 
 /// Collects information from the AST that is useful for the formatter
@@ -841,6 +855,13 @@ final class FormatVisitor : ASTVisitor
         unary.accept(this);
     }
 
+    override void visit(const TernaryExpression ternary)
+    {
+        if (ternary.colon.type != tok!"")
+            astInformation.ternaryColonLocations ~= ternary.colon.index;
+        ternary.accept(this);
+    }
+
 private:
     ASTInformation* astInformation;
     alias visit = ASTVisitor.visit;