+ map<Assignment::Target, ExpressionInfo>::iterator i = expressions.find(var.declaration);
+ if(i!=expressions.end())
+ {
+ /* If a non-trivial expression is referenced multiple times, don't
+ inline it. */
+ if(i->second.inline_point && !i->second.trivial)
+ i->second.expression = 0;
+ /* Mutating expressions are analogous to self-referencing assignments
+ and prevent inlining. */
+ if(mutating)
+ i->second.expression = 0;
+ r_ref_info = &i->second;
+ }
+ }
+}
+
+void ExpressionInliner::visit(MemberAccess &memacc)
+{
+ visit(memacc.left);
+ r_trivial = false;
+}
+
+void ExpressionInliner::visit(Swizzle &swizzle)
+{
+ visit(swizzle.left);
+ r_trivial = false;
+}
+
+void ExpressionInliner::visit(UnaryExpression &unary)
+{
+ SetFlag set_target(mutating, mutating || unary.oper->token[1]=='+' || unary.oper->token[1]=='-');
+ visit(unary.expression);
+ r_trivial = false;
+}
+
+void ExpressionInliner::visit(BinaryExpression &binary)
+{
+ visit(binary.left);
+ {
+ SetFlag clear_target(mutating, false);
+ visit(binary.right);
+ }
+ r_trivial = false;
+}
+
+void ExpressionInliner::visit(Assignment &assign)
+{
+ {
+ SetFlag set_target(mutating);
+ visit(assign.left);
+ }
+ r_oper = 0;
+ visit(assign.right);
+
+ map<Assignment::Target, ExpressionInfo>::iterator i = expressions.find(assign.target);
+ if(i!=expressions.end())
+ {
+ /* Self-referencing assignments can't be inlined without additional
+ work. Just clear any previous expression. */
+ i->second.expression = (assign.self_referencing ? 0 : assign.right.get());
+ i->second.assign_scope = current_block;
+ i->second.inline_point = 0;
+ i->second.available = true;