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Diffstat (limited to 'src/mem/slicc/ast/StaticCastAST.py')
-rw-r--r-- | src/mem/slicc/ast/StaticCastAST.py | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/src/mem/slicc/ast/StaticCastAST.py b/src/mem/slicc/ast/StaticCastAST.py new file mode 100644 index 000000000..3a48f398e --- /dev/null +++ b/src/mem/slicc/ast/StaticCastAST.py @@ -0,0 +1,54 @@ +# Copyright (c) 2009 Advanced Micro Devices, Inc. +# 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 StaticCastAST(ExprAST): + def __init__(self, slicc, type_ast, expr_ast): + super(StaticCastAST, self).__init__(slicc) + + self.type_ast = type_ast + self.expr_ast = expr_ast + + def __repr__(self): + return "[StaticCastAST: %r]" % self.expr_ast + + def generate(self, code): + actual_type, ecode = self.expr_ast.inline(True) + code('static_cast<${{self.type_ast.type.c_ident}} &>($ecode)') + + if not "interface" in self.type_ast.type: + self.expr_ast.error("static cast only premitted for those types " \ + "that implement inherit an interface") + + # The interface type should match + if str(actual_type) != str(self.type_ast.type["interface"]): + self.expr_ast.error("static cast miss-match, type is '%s'," \ + "but inherited type is '%s'", + actual_type, self.type_ast.type["interface"]) + + return self.type_ast.type + |