+ counter, left_prestatements, left_expression = normalize_expression(counter, expression.left)
+ counter, right_prestatements, right_expression = normalize_expression(counter, expression.right)
+
+ result_variable = '${}'.format(counter)
+ if_else_prestatment = NormalVariableInitializationStatement(variable=result_variable, expression=left_expression)
+ counter += 1
+
+ condition_expression=NormalVariableExpression(variable=result_variable)
+ short_circuited_statements = right_prestatements + (NormalVariableReassignmentStatement(variable=result_variable, expression=right_expression),)
+
+ if expression.operator == 'and':
+ if_else_statement = NormalIfElseStatement(
+ condition_expression=condition_expression,
+ if_statements=short_circuited_statements,
+ else_statements=(),
+ )
+
+ elif expression.operator == 'or':
+ if_else_statement = NormalIfElseStatement(
+ condition_expression=condition_expression,
+ if_statements=(),
+ else_statements=short_circuited_statements,
+ )
+
+ else:
+ raise Exception('Unable to handle operator "{}"'.format(expression.operator))
+
+ return (
+ counter,
+ left_prestatements + (if_else_prestatment, if_else_statement),
+ NormalVariableExpression(variable=result_variable),
+ )
+