TableFunctionsFactory_transformers.RangeAnnotationTransformer Class Reference

Inheritance diagram for TableFunctionsFactory_transformers.RangeAnnotationTransformer:

Collaboration diagram for TableFunctionsFactory_transformers.RangeAnnotationTransformer:

Public Member Functions
def	visit_arg_node
Public Member Functions inherited from TableFunctionsFactory_transformers.AstTransformer
def	visit_udtf_node
def	visit_composed_node
def	visit_arg_node
def	visit_primitive_node
def	visit_template_node
def	visit_annotation_node
Public Member Functions inherited from TableFunctionsFactory_transformers.AstVisitor
def	visit_udtf_node
def	visit_composed_node
def	visit_arg_node
def	visit_primitive_node
def	visit_annotation_node
def	visit_template_node

Detailed Description

* Append require annotation if range is used

Definition at line 430 of file TableFunctionsFactory_transformers.py.

Member Function Documentation

def TableFunctionsFactory_transformers.RangeAnnotationTransformer.visit_arg_node	(		self,
			arg_node
	)

Definition at line 434 of file TableFunctionsFactory_transformers.py.

    def visit_arg_node(self, arg_node):
        for ann in arg_node.annotations:
            if ann.key == 'range':
                name = arg_node.get_annotation('name')
                if name is None:
                    raise TransformerException('"range" requires a named argument')

                v = ann.value
                if len(v) == 2:
                    lo, hi = ann.value
                    value = '"{lo} <= {name} && {name} <= {hi}"'.format(lo=lo, hi=hi, name=name)
                else:
                    raise TransformerException('"range" requires an interval. Got {v}'.format(v=v))
                arg_node.set_annotation('require', value)
        return arg_node