From 2278363015a2a5cc850b38213833096d33b496e8 Mon Sep 17 00:00:00 2001
From: Nathan Binkert <nate@binkert.org>
Date: Tue, 22 Sep 2009 18:12:39 -0700
Subject: 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
---
 src/mem/slicc/ast/EnqueueStatementAST.py | 86 ++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 src/mem/slicc/ast/EnqueueStatementAST.py

(limited to 'src/mem/slicc/ast/EnqueueStatementAST.py')

diff --git a/src/mem/slicc/ast/EnqueueStatementAST.py b/src/mem/slicc/ast/EnqueueStatementAST.py
new file mode 100644
index 000000000..faf966460
--- /dev/null
+++ b/src/mem/slicc/ast/EnqueueStatementAST.py
@@ -0,0 +1,86 @@
+# 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
+from slicc.symbols import Var
+
+class EnqueueStatementAST(StatementAST):
+    def __init__(self, slicc, queue_name, type_ast, pairs, statements):
+        super(EnqueueStatementAST, self).__init__(slicc, pairs)
+
+        self.queue_name = queue_name
+        self.type_ast = type_ast
+        self.statements = statements
+
+    def __repr__(self):
+        return "[EnqueueStatementAst: %s %s %s]" % \
+               (self.queue_name, self.type_ast.ident, self.statements)
+
+    def generate(self, code, return_type):
+        code("{")
+        code.indent()
+        self.symtab.pushFrame()
+
+        msg_type = self.type_ast.type
+
+        # Add new local var to symbol table
+        v = Var(self.symtab, "out_msg", self.location, msg_type, "out_msg",
+                self.pairs)
+        self.symtab.newSymbol(v)
+
+        # Declare message
+        code("${{msg_type.ident}} out_msg;")
+
+        # The other statements
+        t = self.statements.generate(code, None)
+
+        self.queue_name.assertType("OutPort")
+
+        args = [ "out_msg" ]
+        if "latency" in self:
+            latency = self["latency"]
+            try:
+                # see if this is an integer
+                latency = int(latency)
+                args.append("%s" % latency)
+            except ValueError:
+                # if not, it should be a member
+                args.append("m_%s" % latency)
+
+        args = ", ".join(args)
+        code('(${{self.queue_name.var.code}}).enqueue($args);')
+
+
+        # End scope
+        self.symtab.popFrame()
+        code.dedent()
+        code("}")
+
+    def findResources(self, resources):
+        var = self.queue_name.var
+        res_count = int(resources.get(var, 0))
+        resources[var] = str(res_count + 1)
-- 
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