| # 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.ExprAST import ExprAST |
| |
| class MethodCallExprAST(ExprAST): |
| def __init__(self, slicc, proc_name, expr_ast_vec): |
| super(MethodCallExprAST, self).__init__(slicc) |
| self.proc_name = proc_name |
| self.expr_ast_vec = expr_ast_vec |
| |
| def generate(self, code): |
| tmp = self.slicc.codeFormatter() |
| paramTypes = [] |
| for expr_ast in self.expr_ast_vec: |
| return_type = expr_ast.generate(tmp) |
| paramTypes.append(return_type) |
| |
| obj_type, methodId, prefix = self.generate_prefix(paramTypes) |
| |
| # generate code |
| params = [] |
| for expr_ast in self.expr_ast_vec: |
| return_type,tcode = expr_ast.inline(True) |
| params.append(str(tcode)) |
| fix = code.nofix() |
| code("$prefix${{self.proc_name}}(${{', '.join(params)}}))") |
| code.fix(fix) |
| |
| # Verify that this is a method of the object |
| if methodId not in obj_type.methods: |
| self.error("Invalid method call: Type '%s' does not have a method '%s'", |
| obj_type, methodId) |
| |
| func = obj_type.methods[methodId] |
| func.checkArguments(self.expr_ast_vec) |
| |
| # Return the return type of the method |
| return obj_type.methods[methodId].return_type |
| |
| def findResources(self, resources): |
| pass |
| |
| class MemberMethodCallExprAST(MethodCallExprAST): |
| def __init__(self, slicc, obj_expr_ast, func_call): |
| s = super(MemberMethodCallExprAST, self) |
| s.__init__(slicc, func_call.proc_name, func_call.exprs) |
| self.obj_expr_ast = obj_expr_ast |
| |
| def __repr__(self): |
| return "[MethodCallExpr: %r%r %r]" % (self.proc_name, |
| self.obj_expr_ast, |
| self.expr_ast_vec) |
| def generate_prefix(self, paramTypes): |
| code = self.slicc.codeFormatter() |
| |
| # member method call |
| obj_type = self.obj_expr_ast.generate(code) |
| methodId = obj_type.methodId(self.proc_name, paramTypes) |
| |
| prefix = "" |
| implements_interface = False |
| |
| if methodId in obj_type.methods: |
| return_type = obj_type.methods[methodId].return_type |
| |
| else: |
| # |
| # Check whether the method is implemented by the super class |
| if "interface" in obj_type: |
| interface_type = self.symtab.find(obj_type["interface"]); |
| |
| if methodId in interface_type.methods: |
| return_type = interface_type.methods[methodId].return_type |
| obj_type = interface_type |
| |
| else: |
| self.error("Invalid method call: " \ |
| "Type '%s' does not have a method %s, '%s'", |
| obj_type, self.proc_name, methodId) |
| |
| else: |
| # |
| # The initial method check has failed, but before generating an |
| # error we must check whether any of the paramTypes implement |
| # an interface. If so, we must check if the method ids using |
| # the inherited types exist. |
| # |
| # This code is a temporary fix and only checks for the methodId |
| # where all paramTypes are converted to their inherited type. The |
| # right way to do this is to replace slicc's simple string |
| # comparison for determining the correct overloaded method, with a |
| # more robust param by param check. |
| # |
| implemented_paramTypes = [] |
| for paramType in paramTypes: |
| implemented_paramType = paramType |
| if paramType.isInterface: |
| implements_interface = True |
| implemented_paramType.abstract_ident = paramType["interface"] |
| else: |
| implemented_paramType.abstract_ident = paramType.c_ident |
| |
| implemented_paramTypes.append(implemented_paramType) |
| |
| implementedMethodId = "" |
| if implements_interface: |
| implementedMethodId = obj_type.methodIdAbstract( |
| self.proc_name, implemented_paramTypes) |
| |
| if implementedMethodId not in obj_type.methods: |
| self.error("Invalid method call: Type '%s' " \ |
| "does not have a method %s, '%s' nor '%s'", |
| obj_type, self.proc_name, methodId, |
| implementedMethodId) |
| |
| # Replace the methodId with the implementedMethodId |
| # found in the method list. |
| methodId = implementedMethodId |
| return_type = obj_type.methods[methodId].return_type |
| |
| if str(obj_type) == "AbstractCacheEntry" or \ |
| str(obj_type) == "AbstractEntry" or \ |
| ("interface" in obj_type and ( |
| obj_type["interface"] == "AbstractCacheEntry" or |
| obj_type["interface"] == "AbstractEntry")): |
| prefix = "%s((*(%s))." % (prefix, code) |
| else: |
| prefix = "%s((%s)." % (prefix, code) |
| |
| return obj_type, methodId, prefix |
| |
| |
| class ClassMethodCallExprAST(MethodCallExprAST): |
| def __init__(self, slicc, type_ast, proc_name, expr_ast_vec): |
| s = super(ClassMethodCallExprAST, self) |
| s.__init__(slicc, proc_name, expr_ast_vec) |
| |
| self.type_ast = type_ast |
| |
| def __repr__(self): |
| return "[MethodCallExpr: %r %r]" % (self.proc_name, self.expr_ast_vec) |
| |
| def generate_prefix(self, paramTypes): |
| |
| # class method call |
| prefix = "(%s::" % self.type_ast |
| obj_type = self.type_ast.type |
| methodId = obj_type.methodId(self.proc_name, paramTypes) |
| |
| return obj_type, methodId, prefix |
| |
| __all__ = [ "MemberMethodCallExprAST", "ClassMethodCallExprAST" ] |
