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, 52 insertions, 0 deletions

diff --git a/src/mem/slicc/ast/ExprStatementAST.py b/src/mem/slicc/ast/ExprStatementAST.py
new file mode 100644
index 000000000..b16d1d072
--- /dev/null
+++ b/src/mem/slicc/ast/ExprStatementAST.py
@@ -0,0 +1,52 @@
+# 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.StatementAST import StatementAST
+from slicc.symbols import Type
+
+class ExprStatementAST(StatementAST):
+    def __init__(self, slicc, expr):
+        super(ExprStatementAST, self).__init__(slicc)
+        self.expr = expr
+
+    def __repr__(self):
+        return "[ExprStatementAST: %s]" % (self.expr)
+
+    def generate(self, code, return_type):
+        actual_type,rcode = self.expr.inline(True)
+        code("$rcode;")
+
+        # The return type must be void
+        if actual_type != self.symtab.find("void", Type):
+            self.expr.error("Non-void return must not be ignored, " + \
+                            "return type is '%s'", actual_type.ident)
+
+    def findResources(self, resources):
+        self.expr.findResources(resources)
+