1 files changed, 54 insertions, 0 deletions
diff --git a/src/mem/slicc/ast/ReturnStatementAST.py b/src/mem/slicc/ast/ReturnStatementAST.py
new file mode 100644
index 000000000..1d08a7234
--- /dev/null
+++ b/src/mem/slicc/ast/ReturnStatementAST.py
@@ -0,0 +1,54 @@
+# Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
+# Copyright (c) 2009 The Hewlett-Packard Development Company
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met: redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer;
+# redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution;
+# neither the name of the copyright holders nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+from slicc.ast.StatementAST import StatementAST
+
+class ReturnStatementAST(StatementAST):
+    def __init__(self, slicc, expr_ast):
+        super(ReturnStatementAST, self).__init__(slicc)
+
+        self.expr_ast = expr_ast
+
+    def __repr__(self):
+        return "[ReturnStatementAST: %r]" % self.expr_ast
+
+    def generate(self, code, return_type):
+        actual_type, ecode = self.expr_ast.inline(True)
+        code('return $ecode;')
+
+        # Is return valid here?
+        if return_type is None:
+            error("Invalid 'return' statement")
+
+        # The return type must match
+        if return_type != actual_type:
+            self.expr_ast.error("Return type miss-match, expected return " +
+                                "type is '%s', actual is '%s'",
+                                return_type, actual_type)
+
+    def findResources(self, resources):
+        self.expr_ast.findResources(resources)