19cc9fc6bd
The error in the SLICC code was hidden by the python error in SLICC parser before this patch
76 lines
3.1 KiB
Python
76 lines
3.1 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.StatementAST import StatementAST
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from slicc.symbols import Type
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class IfStatementAST(StatementAST):
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def __init__(self, slicc, cond, then, else_):
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super(IfStatementAST, self).__init__(slicc)
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assert cond is not None
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assert then is not None
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self.cond = cond
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self.then = then
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self.else_ = else_
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def __repr__(self):
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return "[IfStatement: %r%r%r]" % (self.cond, self.then, self.else_)
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def generate(self, code, return_type):
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cond_code = self.slicc.codeFormatter()
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cond_type = self.cond.generate(cond_code)
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if cond_type != self.symtab.find("bool", Type):
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self.cond.error("Condition of if stmt must be bool, type was '%s'",
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cond_type)
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# Conditional
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code.indent()
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code('if ($cond_code) {')
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# Then part
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code.indent()
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self.symtab.pushFrame()
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self.then.generate(code, return_type)
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self.symtab.popFrame()
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code.dedent()
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# Else part
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if self.else_:
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code('} else {')
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code.indent()
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self.symtab.pushFrame()
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self.else_.generate(code, return_type)
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self.symtab.popFrame()
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code.dedent()
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code('}') # End scope
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def findResources(self, resources):
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# Take a worse case look at both paths
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self.then.findResources(resources)
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if self.else_ is not None:
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self.else_.findResources(resources)
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