slicc: Pure python implementation of slicc.

This is simply a translation of the C++ slicc into python with very minimal
reorganization of the code.  The output can be verified as nearly identical
by doing a "diff -wBur".

Slicc can easily be run manually by using util/slicc

1 files changed, 72 insertions, 0 deletions

diff --git a/src/mem/slicc/ast/ActionDeclAST.py b/src/mem/slicc/ast/ActionDeclAST.py
new file mode 100644
index 000000000..18bf443b9
--- /dev/null
+++ b/src/mem/slicc/ast/ActionDeclAST.py
@@ -0,0 +1,72 @@
+# 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 m5.util import code_formatter
+
+from slicc.ast.DeclAST import DeclAST
+from slicc.symbols import Action, Type, Var
+
+class ActionDeclAST(DeclAST):
+    def __init__(self, slicc, ident, pairs, statement_list):
+        super(ActionDeclAST, self).__init__(slicc, pairs)
+        self.ident = ident
+        self.statement_list = statement_list
+
+    def __repr__(self):
+        return "[ActionDecl: %r]" % (self.ident)
+
+    def generate(self):
+        resources = {}
+        if self.statement_list:
+            # Add new local vars
+            self.symtab.pushFrame()
+
+            addr_type = self.symtab.find("Address", Type)
+
+            if addr_type is None:
+                self.error("Type 'Address' not declared.")
+
+            var = Var(self.symtab, "address", self.location, addr_type,
+                      "addr", self.pairs)
+            self.symtab.newSymbol(var)
+
+            # Do not allows returns in actions
+            code = code_formatter()
+            self.statement_list.generate(code, None)
+            self.pairs["c_code"] = str(code)
+
+            self.statement_list.findResources(resources)
+
+            self.symtab.popFrame()
+
+        machine = self.symtab.state_machine
+        if machine is None:
+            self.error("Action declaration not part of a machine.")
+
+        action = Action(self.symtab, self.ident, resources, self.location,
+                        self.pairs)
+        machine.addAction(action)