3e607f146f
This patch adds support for function definitions to appear in slicc structs. This is required for supporting functional accesses for different types of messages. Subsequent patches will use this to development.
87 lines
3.3 KiB
Python
87 lines
3.3 KiB
Python
# Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
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# Copyright (c) 2009 The Hewlett-Packard Development Company
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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from slicc.ast.DeclAST import DeclAST
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from slicc.symbols import Func, Type
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class FuncDeclAST(DeclAST):
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def __init__(self, slicc, return_type, ident, formals, pairs, statements):
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super(FuncDeclAST, self).__init__(slicc, pairs)
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self.return_type = return_type
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self.ident = ident
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self.formals = formals
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self.statements = statements
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def __repr__(self):
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return "[FuncDecl: %s]" % self.ident
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def files(self, parent=None):
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return set()
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def generate(self, parent = None):
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types = []
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params = []
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void_type = self.symtab.find("void", Type)
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# Generate definition code
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self.symtab.pushFrame()
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# Lookup return type
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return_type = self.return_type.type
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# Generate function header
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for formal in self.formals:
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# Lookup parameter types
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type, ident = formal.generate()
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types.append(type)
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params.append(ident)
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body = self.slicc.codeFormatter()
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if self.statements is None:
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self["external"] = "yes"
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else:
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rtype = self.statements.generate(body, return_type)
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self.symtab.popFrame()
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machine = self.state_machine
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func = Func(self.symtab, self.ident, self.location, return_type,
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types, params, str(body), self.pairs)
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if parent is not None:
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if not parent.addFunc(func):
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self.error("Duplicate method: %s:%s()" % (parent, self.ident))
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func.class_name = parent.c_ident
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elif machine is not None:
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machine.addFunc(func)
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func.isInternalMachineFunc = True
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func.class_name = "%s_Controller" % machine
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else:
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self.symtab.newSymbol(func)
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