From: Luca Bruno <lucabru@src.gnome.org>
Date: Sat, 1 Feb 2014 09:42:27 +0000 (+0100)
Subject: Cleanup generated empty blocks
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e41e46757bb20a9d537f199350d45de276d95e9b;p=thirdparty%2Fvala.git

Cleanup generated empty blocks
---

diff --git a/vala/valablock.vala b/vala/valablock.vala
index 0a4c544d7..4db87ca9a 100644
--- a/vala/valablock.vala
+++ b/vala/valablock.vala
@@ -197,6 +197,23 @@ public class Vala.Block : Symbol, Statement {
 		stmt.prev = new_stmt;
 	}
 
+	public void remove_statement (Statement stmt) {
+		var prev = stmt.prev;
+		var next = stmt.next;
+
+		if (prev != null) {
+			prev.next = next;
+		} else {
+			first_statement = next;
+		}
+
+		if (next != null) {
+			next.prev = prev;
+		} else {
+			last_statement = prev;
+		}
+	}
+
 	public void replace_statement (Statement old_stmt, Statement new_stmt) {
 		new_stmt.parent_node = this;
 		new_stmt.prev = old_stmt.prev;
diff --git a/vala/valacodebuilder.vala b/vala/valacodebuilder.vala
index 4a86650ea..bbe8a5cc8 100644
--- a/vala/valacodebuilder.vala
+++ b/vala/valacodebuilder.vala
@@ -47,6 +47,12 @@ public class Vala.CodeBuilder {
 		m.body.add_statement (current_block);
 	}
 
+	public void cleanup () {
+		if (current_block.first_statement == null) {
+			insert_block.remove_statement (current_block);
+		}
+	}
+
 	public void check (CodeTransformer transformer) {
 		foreach (var node in decl_nodes) {
 			transformer.check (node);
diff --git a/vala/valacodetransformer.vala b/vala/valacodetransformer.vala
index fb2a960cc..1a8bf359f 100644
--- a/vala/valacodetransformer.vala
+++ b/vala/valacodetransformer.vala
@@ -42,6 +42,7 @@ public class Vala.CodeTransformer : CodeVisitor {
 	}
 
 	public void pop_builder () {
+		b.cleanup ();
 		b = builder_stack.remove_at (builder_stack.size - 1);
 	}