| # 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.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 = {} | |
| machine = self.symtab.state_machine | |
| if machine is None: | |
| self.error("Action declaration not part of a machine.") | |
| 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) | |
| if machine.TBEType != None: | |
| var = Var(self.symtab, "tbe", self.location, machine.TBEType, | |
| "m_tbe_ptr", self.pairs) | |
| self.symtab.newSymbol(var) | |
| if machine.EntryType != None: | |
| var = Var(self.symtab, "cache_entry", self.location, | |
| machine.EntryType, "m_cache_entry_ptr", self.pairs) | |
| self.symtab.newSymbol(var) | |
| # Do not allows returns in actions | |
| code = self.slicc.codeFormatter() | |
| self.statement_list.generate(code, None) | |
| self.pairs["c_code"] = str(code) | |
| self.statement_list.findResources(resources) | |
| self.symtab.popFrame() | |
| action = Action(self.symtab, self.ident, resources, self.location, | |
| self.pairs) | |
| machine.addAction(action) |