70 lines
		
	
	
		
			2.5 KiB
		
	
	
	
		
			Python
		
	
	
			
		
		
	
	
			70 lines
		
	
	
		
			2.5 KiB
		
	
	
	
		
			Python
		
	
	
"""Instantiate global function."""
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import gtwrap.interface_parser as parser
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from gtwrap.template_instantiator.helpers import (instantiate_args_list,
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                                                  instantiate_name,
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                                                  instantiate_return_type)
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class InstantiatedGlobalFunction(parser.GlobalFunction):
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    """
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    Instantiate global functions.
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    E.g.
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        template<T = {double}>
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        T add(const T& x, const T& y);
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    """
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    def __init__(self, original, instantiations=(), new_name=''):
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        self.original = original
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        self.instantiations = instantiations
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        self.template = ''
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        self.parent = original.parent
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        if not original.template:
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            self.name = original.name
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            self.return_type = original.return_type
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            self.args = original.args
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        else:
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            self.name = instantiate_name(
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                original.name, instantiations) if not new_name else new_name
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            self.return_type = instantiate_return_type(
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                original.return_type,
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                self.original.template.typenames,
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                self.instantiations,
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                # Keyword type name `This` should already be replaced in the
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                # previous class template instantiation round.
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                cpp_typename='',
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            )
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            instantiated_args = instantiate_args_list(
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                original.args.list(),
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                self.original.template.typenames,
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                self.instantiations,
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                # Keyword type name `This` should already be replaced in the
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                # previous class template instantiation round.
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                cpp_typename='',
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            )
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            self.args = parser.ArgumentList(instantiated_args)
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        super().__init__(self.name,
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                         self.return_type,
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                         self.args,
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                         self.template,
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                         parent=self.parent)
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    def to_cpp(self):
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        """Generate the C++ code for wrapping."""
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        if self.original.template:
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            instantiated_names = [
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                "::".join(inst.namespaces + [inst.instantiated_name()])
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                for inst in self.instantiations
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            ]
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            ret = "{}<{}>".format(self.original.name,
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                                  ",".join(instantiated_names))
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        else:
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            ret = self.original.name
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        return ret
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    def __repr__(self):
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        return "Instantiated {}".format(
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            super(InstantiatedGlobalFunction, self).__repr__())
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