1#!/usr/bin/env python3 2# ex: set filetype=python: 3 4"""Generate code to handle XDR enum types""" 5 6from generators import SourceGenerator, create_jinja2_environment 7from xdr_ast import _XdrEnum, public_apis, big_endian, get_header_name 8from xdr_parse import get_xdr_enum_validation 9 10 11class XdrEnumGenerator(SourceGenerator): 12 """Generate source code for XDR enum types""" 13 14 def __init__(self, language: str, peer: str): 15 """Initialize an instance of this class""" 16 self.environment = create_jinja2_environment(language, "enum") 17 self.peer = peer 18 19 def emit_declaration(self, node: _XdrEnum) -> None: 20 """Emit one declaration pair for an XDR enum type""" 21 if node.name in public_apis: 22 template = self.environment.get_template("declaration/enum.j2") 23 print(template.render(name=node.name)) 24 25 def emit_definition(self, node: _XdrEnum) -> None: 26 """Emit one definition for an XDR enum type""" 27 template = self.environment.get_template("definition/open.j2") 28 print(template.render(name=node.name)) 29 30 template = self.environment.get_template("definition/enumerator.j2") 31 for enumerator in node.enumerators: 32 print(template.render(name=enumerator.name, value=enumerator.value)) 33 34 if node.name in big_endian: 35 template = self.environment.get_template("definition/close_be.j2") 36 else: 37 template = self.environment.get_template("definition/close.j2") 38 print(template.render(name=node.name)) 39 40 def emit_decoder(self, node: _XdrEnum) -> None: 41 """Emit one decoder function for an XDR enum type""" 42 if node.name in big_endian: 43 template = self.environment.get_template("decoder/enum_be.j2") 44 else: 45 template = self.environment.get_template("decoder/enum.j2") 46 print( 47 template.render( 48 name=node.name, 49 enumerators=node.enumerators, 50 validate=get_xdr_enum_validation(), 51 ) 52 ) 53 54 def emit_encoder(self, node: _XdrEnum) -> None: 55 """Emit one encoder function for an XDR enum type""" 56 if node.name in big_endian: 57 template = self.environment.get_template("encoder/enum_be.j2") 58 else: 59 template = self.environment.get_template("encoder/enum.j2") 60 print(template.render(name=node.name)) 61 62 def emit_maxsize(self, node: _XdrEnum) -> None: 63 """Emit one maxsize macro for an XDR enum type""" 64 macro_name = get_header_name().upper() + "_" + node.name + "_sz" 65 template = self.environment.get_template("maxsize/enum.j2") 66 print( 67 template.render( 68 macro=macro_name, 69 width=" + ".join(node.symbolic_width()), 70 ) 71 ) 72