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author | Nathan Binkert <nate@binkert.org> | 2009-09-22 18:12:39 -0700 |
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committer | Nathan Binkert <nate@binkert.org> | 2009-09-22 18:12:39 -0700 |
commit | 2278363015a2a5cc850b38213833096d33b496e8 (patch) | |
tree | 8f7fea117f40cadbec70e68a0b92e1cb960dafbe /src/mem/slicc/ast/VarExprAST.py | |
parent | 30d5d95b6a7c93ccf63ae0cfcc62d17306c31eee (diff) | |
download | gem5-2278363015a2a5cc850b38213833096d33b496e8.tar.xz |
slicc: Pure python implementation of slicc.
This is simply a translation of the C++ slicc into python with very minimal
reorganization of the code. The output can be verified as nearly identical
by doing a "diff -wBur".
Slicc can easily be run manually by using util/slicc
Diffstat (limited to 'src/mem/slicc/ast/VarExprAST.py')
-rw-r--r-- | src/mem/slicc/ast/VarExprAST.py | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/src/mem/slicc/ast/VarExprAST.py b/src/mem/slicc/ast/VarExprAST.py new file mode 100644 index 000000000..ac440bb68 --- /dev/null +++ b/src/mem/slicc/ast/VarExprAST.py @@ -0,0 +1,66 @@ +# 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 +from slicc.symbols import Type, Var + +class VarExprAST(ExprAST): + def __init__(self, slicc, var): + super(VarExprAST, self).__init__(slicc) + self._var = var + + def __repr__(self): + return "[VarExprAST: %r]" % self._var + + @property + def name(self): + return str(self._var) + + @property + def var(self): + var = self.symtab.find(self._var, Var) + if not var: + self.error("Unrecognized variable: %s", self._var) + return var + + def assertType(self, type_ident): + expected_type = self.symtab.find(type_ident, Type) + + if not expected_type: + self.error("There must be a type '%s' declared in this scope", + type_ident) + + if self.var.type != expected_type: + self.error("Incorrect type: " + \ + "'%s' is expected to be type '%s' not '%s'", + self.var.ident, expected_type, self.var.type) + + def generate(self, code): + fix = code.nofix() + code("${{self.var.code}}") + code.fix(fix) + return self.var.type |