From: Jean Privat <jean@pryen.org>
Date: Fri, 8 Apr 2016 15:46:47 +0000 (-0400)
Subject: nitc/scope: attach AReturnExpr to an escape mark of the whole propdef
X-Git-Url: http://nitlanguage.org?hp=1a73a0018d28585f7bab5f2598c84ce7e06080e7

nitc/scope: attach AReturnExpr to an escape mark of the whole propdef

Signed-off-by: Jean Privat <jean@pryen.org>
---

diff --git a/src/semantize/scope.nit b/src/semantize/scope.nit
index 5f9c748..a0205a5 100644
--- a/src/semantize/scope.nit
+++ b/src/semantize/scope.nit
@@ -71,6 +71,9 @@ private class ScopeVisitor
 	# The tool context used to display errors
 	var toolcontext: ToolContext
 
+	# The analysed property
+	var propdef: APropdef
+
 	var selfvariable = new Variable("self")
 
 	init
@@ -248,10 +251,13 @@ redef class ANode
 end
 
 redef class APropdef
+	# The break escape mark associated with the return
+	var return_mark: nullable EscapeMark
+
 	# Entry point of the scope analysis
 	fun do_scope(toolcontext: ToolContext)
 	do
-		var v = new ScopeVisitor(toolcontext)
+		var v = new ScopeVisitor(toolcontext, self)
 		v.enter_visit(self)
 		v.shift_scope
 	end
@@ -326,6 +332,21 @@ redef class ABreakExpr
 	end
 end
 
+redef class AReturnExpr
+	redef fun accept_scope_visitor(v)
+	do
+		super
+
+		var escapemark = v.propdef.return_mark
+		if escapemark == null then
+			escapemark = new EscapeMark
+			v.propdef.return_mark = escapemark
+		end
+
+		escapemark.escapes.add(self)
+		self.escapemark = escapemark
+	end
+end
 
 redef class ADoExpr
 	# The break escape mark associated with the 'do' block