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# 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.code_formatter import code_formatter
from slicc.ast.DeclAST import DeclAST
from slicc.symbols import Func, Type
class FuncDeclAST(DeclAST):
def __init__(self, slicc, return_type, ident, formals, pairs, statements):
super(FuncDeclAST, self).__init__(slicc, pairs)
self.return_type = return_type
self.ident = ident
self.formals = formals
self.statements = statements
def __repr__(self):
return "[FuncDecl: %s]" % self.ident
def files(self, hh, cc, parent=None):
if "external" in self or self.statements is None:
return
if parent:
ident = "%s_%s" % (parent, self.ident)
else:
ident = self.ident
cc.add("%s.cc" % ident)
def generate(self):
types = []
params = []
void_type = self.symtab.find("void", Type)
# Generate definition code
self.symtab.pushFrame()
# Lookup return type
return_type = self.return_type.type
# Generate function header
for formal in self.formals:
# Lookup parameter types
type, ident = formal.generate()
types.append(type)
params.append(ident)
body = code_formatter()
if self.statements is None:
self["external"] = "yes"
else:
rtype = self.statements.generate(body, return_type)
self.symtab.popFrame()
machine = self.state_machine
func = Func(self.symtab, self.ident, self.location, return_type,
types, params, str(body), self.pairs, machine)
if machine is not None:
machine.addFunc(func)
else:
self.symtab.newSymbol(func)
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