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800 lines
28 KiB
800 lines
28 KiB
#! /usr/bin/env python3
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# Read from stdin, spit out C header or body.
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import argparse
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import copy
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import fileinput
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import re
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from collections import namedtuple
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Enumtype = namedtuple('Enumtype', ['name', 'value'])
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type2size = {
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'pad': 1,
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'struct channel_id': 32,
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'struct short_channel_id': 8,
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'struct ipv6': 16,
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'secp256k1_ecdsa_signature': 64,
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'struct preimage': 32,
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'struct pubkey': 33,
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'struct sha256': 32,
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'struct bitcoin_blkid': 32,
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'struct bitcoin_txid': 32,
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'struct secret': 32,
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'struct amount_msat': 8,
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'struct amount_sat': 8,
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'u64': 8,
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'u32': 4,
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'u16': 2,
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'u8': 1,
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'bool': 1
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}
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# These struct array helpers require a context to allocate from.
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varlen_structs = [
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'peer_features',
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'gossip_getnodes_entry',
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'failed_htlc',
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'utxo',
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'bitcoin_tx',
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'wirestring',
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]
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class FieldType(object):
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def __init__(self, name):
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self.name = name
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def is_assignable(self):
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return self.name in ['u8', 'u16', 'u32', 'u64', 'bool', 'struct amount_msat', 'struct amount_sat'] or self.name.startswith('enum ')
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# We only accelerate the u8 case: it's common and trivial.
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def has_array_helper(self):
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return self.name in ['u8']
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# Returns base size
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@staticmethod
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def _typesize(typename):
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if typename in type2size:
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return type2size[typename]
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elif typename.startswith('struct ') or typename.startswith('enum '):
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# We allow unknown structures/enums, for extensibility (can only happen
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# if explicitly specified in csv)
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return 0
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else:
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raise ValueError('Unknown typename {}'.format(typename))
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# Full (message, fieldname)-mappings
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typemap = {
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('update_fail_htlc', 'reason'): FieldType('u8'),
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('node_announcement', 'alias'): FieldType('u8'),
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('update_add_htlc', 'onion_routing_packet'): FieldType('u8'),
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('update_fulfill_htlc', 'payment_preimage'): FieldType('struct preimage'),
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('error', 'data'): FieldType('u8'),
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('shutdown', 'scriptpubkey'): FieldType('u8'),
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('node_announcement', 'rgb_color'): FieldType('u8'),
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('node_announcement', 'addresses'): FieldType('u8'),
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('node_announcement', 'ipv6'): FieldType('struct ipv6'),
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('announcement_signatures', 'short_channel_id'): FieldType('struct short_channel_id'),
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('channel_announcement', 'short_channel_id'): FieldType('struct short_channel_id'),
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('channel_update', 'short_channel_id'): FieldType('struct short_channel_id'),
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('revoke_and_ack', 'per_commitment_secret'): FieldType('struct secret'),
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('channel_reestablish_option_data_loss_protect', 'your_last_per_commitment_secret'): FieldType('struct secret'),
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('channel_update', 'fee_base_msat'): FieldType('u32'),
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('final_incorrect_htlc_amount', 'incoming_htlc_amt'): FieldType('struct amount_msat'),
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}
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# Partial names that map to a datatype
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partialtypemap = {
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'signature': FieldType('secp256k1_ecdsa_signature'),
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'features': FieldType('u8'),
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'channel_id': FieldType('struct channel_id'),
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'chain_hash': FieldType('struct bitcoin_blkid'),
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'funding_txid': FieldType('struct bitcoin_txid'),
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'pad': FieldType('pad'),
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'msat': FieldType('struct amount_msat'),
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'satoshis': FieldType('struct amount_sat'),
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}
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# Size to typename match
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sizetypemap = {
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33: FieldType('struct pubkey'),
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32: FieldType('struct sha256'),
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8: FieldType('u64'),
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4: FieldType('u32'),
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2: FieldType('u16'),
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1: FieldType('u8')
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}
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# It would be nicer if we had put '*u8' in spec and disallowed bare lenvar.
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# In practice we only recognize lenvar when it's the previous field.
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# size := baresize | arraysize
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# baresize := simplesize | lenvar
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# simplesize := number | type
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# arraysize := length '*' type
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# length := lenvar | number
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class Field(object):
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def __init__(self, message, name, size, comments, prevname):
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self.message = message
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self.comments = comments
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self.name = name
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self.is_len_var = False
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self.lenvar = None
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self.num_elems = 1
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self.optional = False
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# ? means optional field (not supported for arrays)
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if size.startswith('?'):
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self.optional = True
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size = size[1:]
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# If it's an arraysize, swallow prefix.
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elif '*' in size:
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number = size.split('*')[0]
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if number == prevname:
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self.lenvar = number
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else:
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self.num_elems = int(number)
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size = size.split('*')[1]
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elif options.bolt and size == prevname:
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# Raw length field, implies u8.
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self.lenvar = size
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size = '1'
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# Bolts use just a number: Guess type based on size.
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if options.bolt:
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base_size = int(size)
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self.fieldtype = Field._guess_type(message, self.name, base_size)
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# There are some arrays which we have to guess, based on sizes.
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tsize = FieldType._typesize(self.fieldtype.name)
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if base_size % tsize != 0:
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raise ValueError('Invalid size {} for {}.{} not a multiple of {}'
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.format(base_size,
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self.message,
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self.name,
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tsize))
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self.num_elems = int(base_size / tsize)
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else:
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# Real typename.
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self.fieldtype = FieldType(size)
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def basetype(self):
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base = self.fieldtype.name
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if base.startswith('struct '):
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base = base[7:]
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elif base.startswith('enum '):
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base = base[5:]
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return base
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def is_padding(self):
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return self.name.startswith('pad')
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# Padding is always treated as an array.
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def is_array(self):
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return self.num_elems > 1 or self.is_padding()
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def is_variable_size(self):
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return self.lenvar is not None
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def needs_ptr_to_ptr(self):
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return self.is_variable_size() or self.optional
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def is_assignable(self):
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if self.is_array() or self.needs_ptr_to_ptr():
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return False
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return self.fieldtype.is_assignable()
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def has_array_helper(self):
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return self.fieldtype.has_array_helper()
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# Returns FieldType
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@staticmethod
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def _guess_type(message, fieldname, base_size):
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# Check for full (message, fieldname)-matches
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if (message, fieldname) in typemap:
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return typemap[(message, fieldname)]
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# Check for partial field names
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for k, v in partialtypemap.items():
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if k in fieldname:
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return v
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# Check for size matches
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if base_size in sizetypemap:
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return sizetypemap[base_size]
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raise ValueError('Unknown size {} for {}'.format(base_size, fieldname))
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fromwire_impl_templ = """bool fromwire_{name}({ctx}const void *p{args})
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{{
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{fields}
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\tconst u8 *cursor = p;
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\tsize_t plen = tal_count(p);
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\tif (fromwire_u16(&cursor, &plen) != {enum.name})
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\t\treturn false;
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{subcalls}
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\treturn cursor != NULL;
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}}
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"""
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fromwire_header_templ = """bool fromwire_{name}({ctx}const void *p{args});
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"""
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towire_header_templ = """u8 *towire_{name}(const tal_t *ctx{args});
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"""
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towire_impl_templ = """u8 *towire_{name}(const tal_t *ctx{args})
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{{
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{field_decls}
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\tu8 *p = tal_arr(ctx, u8, 0);
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\ttowire_u16(&p, {enumname});
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{subcalls}
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\treturn memcheck(p, tal_count(p));
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}}
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"""
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printwire_header_templ = """void printwire_{name}(const char *fieldname, const u8 *cursor);
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"""
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printwire_impl_templ = """void printwire_{name}(const char *fieldname, const u8 *cursor)
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{{
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\tsize_t plen = tal_count(cursor);
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\tif (fromwire_u16(&cursor, &plen) != {enum.name}) {{
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\t\tprintf("WRONG TYPE?!\\n");
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\t\treturn;
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\t}}
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{subcalls}
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\tif (plen != 0)
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\t\tprintf("EXTRA: %s\\n", tal_hexstr(NULL, cursor, plen));
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}}
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"""
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class CCode(object):
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"""Simple class to create indented C code"""
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def __init__(self):
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self.indent = 1
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self.single_indent = False
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self.code = []
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def append(self, lines):
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for line in lines.split('\n'):
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# Let us to the indenting please!
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assert '\t' not in line
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# Special case: } by itself is pre-unindented.
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if line == '}':
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self.indent -= 1
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self.code.append("\t" * self.indent + line)
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continue
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self.code.append("\t" * self.indent + line)
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if self.single_indent:
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self.indent -= 1
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self.single_indent = False
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if line.endswith('{'):
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self.indent += 1
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elif line.endswith('}'):
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self.indent -= 1
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elif line.startswith('for') or line.startswith('if'):
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self.indent += 1
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self.single_indent = True
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def __str__(self):
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assert self.indent == 1
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assert not self.single_indent
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return '\n'.join(self.code)
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class Message(object):
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def __init__(self, name, enum, comments):
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self.name = name
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self.enum = enum
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self.comments = comments
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self.fields = []
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self.has_variable_fields = False
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def checkLenField(self, field):
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# Optional fields don't have a len.
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if field.optional:
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return
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for f in self.fields:
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if f.name == field.lenvar:
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if f.fieldtype.name != 'u16':
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raise ValueError('Field {} has non-u16 length variable {} (type {})'
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.format(field.name, field.lenvar, f.fieldtype.name))
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if f.is_array() or f.needs_ptr_to_ptr():
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raise ValueError('Field {} has non-simple length variable {}'
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.format(field.name, field.lenvar))
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f.is_len_var = True
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f.lenvar_for = field
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return
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raise ValueError('Field {} unknown length variable {}'
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.format(field.name, field.lenvar))
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def addField(self, field):
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# We assume field lengths are 16 bit, to avoid overflow issues and
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# massive allocations.
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if field.is_variable_size():
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self.checkLenField(field)
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self.has_variable_fields = True
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elif field.basetype() in varlen_structs or field.optional:
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self.has_variable_fields = True
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self.fields.append(field)
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def print_fromwire_array(self, ctx, subcalls, basetype, f, name, num_elems):
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if f.has_array_helper():
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subcalls.append('fromwire_{}_array(&cursor, &plen, {}, {});'
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.format(basetype, name, num_elems))
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else:
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subcalls.append('for (size_t i = 0; i < {}; i++)'
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.format(num_elems))
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if f.fieldtype.is_assignable():
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subcalls.append('({})[i] = fromwire_{}(&cursor, &plen);'
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.format(name, basetype))
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elif basetype in varlen_structs:
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subcalls.append('({})[i] = fromwire_{}({}, &cursor, &plen);'
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.format(name, basetype, ctx))
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else:
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subcalls.append('fromwire_{}(&cursor, &plen, {} + i);'
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.format(basetype, name))
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def print_fromwire(self, is_header):
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ctx_arg = 'const tal_t *ctx, ' if self.has_variable_fields else ''
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args = []
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for f in self.fields:
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if f.is_len_var or f.is_padding():
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continue
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elif f.is_array():
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args.append(', {} {}[{}]'.format(f.fieldtype.name, f.name, f.num_elems))
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else:
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ptrs = '*'
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# If we're handing a variable array, we need a ptr-to-ptr.
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if f.needs_ptr_to_ptr():
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ptrs += '*'
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# If each type is a variable length, we need a ptr to that.
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if f.basetype() in varlen_structs:
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ptrs += '*'
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args.append(', {} {}{}'.format(f.fieldtype.name, ptrs, f.name))
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template = fromwire_header_templ if is_header else fromwire_impl_templ
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fields = ['\t{} {};\n'.format(f.fieldtype.name, f.name) for f in self.fields if f.is_len_var]
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subcalls = CCode()
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for f in self.fields:
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basetype = f.basetype()
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for c in f.comments:
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subcalls.append('/*{} */'.format(c))
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if f.is_padding():
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subcalls.append('fromwire_pad(&cursor, &plen, {});'
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.format(f.num_elems))
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elif f.is_array():
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self.print_fromwire_array('ctx', subcalls, basetype, f, f.name,
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f.num_elems)
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elif f.is_variable_size():
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subcalls.append("//2nd case {name}".format(name=f.name))
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typename = f.fieldtype.name
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# If structs are varlen, need array of ptrs to them.
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if basetype in varlen_structs:
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typename += ' *'
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subcalls.append('*{} = {} ? tal_arr(ctx, {}, {}) : NULL;'
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.format(f.name, f.lenvar, typename, f.lenvar))
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# Allocate these off the array itself, if they need alloc.
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self.print_fromwire_array('*' + f.name, subcalls, basetype, f,
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'*' + f.name, f.lenvar)
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else:
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if f.optional:
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assignable = f.fieldtype.is_assignable()
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deref = '*'
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else:
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deref = ''
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assignable = f.is_assignable()
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if assignable:
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if f.is_len_var:
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s = '{} = fromwire_{}(&cursor, &plen);'.format(f.name, basetype)
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else:
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s = '{}*{} = fromwire_{}(&cursor, &plen);'.format(deref, f.name, basetype)
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elif basetype in varlen_structs:
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s = '{}*{} = fromwire_{}(ctx, &cursor, &plen);'.format(deref, f.name, basetype)
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else:
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s = 'fromwire_{}(&cursor, &plen, {}{});'.format(basetype, deref, f.name)
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if f.optional:
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subcalls.append("if (!fromwire_bool(&cursor, &plen))\n"
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"*{} = NULL;\n"
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"else {{\n"
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"*{} = tal(ctx, {});\n"
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"{}\n"
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"}}"
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.format(f.name, f.name, f.fieldtype.name,
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s))
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else:
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subcalls.append(s)
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return template.format(
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name=self.name,
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ctx=ctx_arg,
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args=''.join(args),
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fields=''.join(fields),
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enum=self.enum,
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subcalls=str(subcalls)
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)
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def print_towire_array(self, subcalls, basetype, f, num_elems):
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if f.has_array_helper():
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subcalls.append('towire_{}_array(&p, {}, {});'
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.format(basetype, f.name, num_elems))
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else:
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subcalls.append('for (size_t i = 0; i < {}; i++)'
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.format(num_elems))
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if f.fieldtype.is_assignable() or basetype in varlen_structs:
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subcalls.append('towire_{}(&p, {}[i]);'
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.format(basetype, f.name))
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else:
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subcalls.append('towire_{}(&p, {} + i);'
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.format(basetype, f.name))
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def print_towire(self, is_header):
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template = towire_header_templ if is_header else towire_impl_templ
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args = []
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for f in self.fields:
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if f.is_padding() or f.is_len_var:
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continue
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if f.is_array():
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args.append(', const {} {}[{}]'.format(f.fieldtype.name, f.name, f.num_elems))
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elif f.is_assignable():
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args.append(', {} {}'.format(f.fieldtype.name, f.name))
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elif f.is_variable_size() and f.basetype() in varlen_structs:
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args.append(', const {} **{}'.format(f.fieldtype.name, f.name))
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else:
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args.append(', const {} *{}'.format(f.fieldtype.name, f.name))
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field_decls = []
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for f in self.fields:
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if f.is_len_var:
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field_decls.append('\t{0} {1} = tal_count({2});'.format(
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f.fieldtype.name, f.name, f.lenvar_for.name
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))
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subcalls = CCode()
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for f in self.fields:
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basetype = f.fieldtype.name
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if basetype.startswith('struct '):
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basetype = basetype[7:]
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elif basetype.startswith('enum '):
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basetype = basetype[5:]
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for c in f.comments:
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subcalls.append('/*{} */'.format(c))
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if f.is_padding():
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subcalls.append('towire_pad(&p, {});'
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.format(f.num_elems))
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elif f.is_array():
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self.print_towire_array(subcalls, basetype, f, f.num_elems)
|
|
elif f.is_variable_size():
|
|
self.print_towire_array(subcalls, basetype, f, f.lenvar)
|
|
else:
|
|
if f.optional:
|
|
if f.fieldtype.is_assignable():
|
|
deref = '*'
|
|
else:
|
|
deref = ''
|
|
subcalls.append("if (!{})\n"
|
|
"towire_bool(&p, false);\n"
|
|
"else {{\n"
|
|
"towire_bool(&p, true);\n"
|
|
"towire_{}(&p, {}{});\n"
|
|
"}}".format(f.name, basetype, deref, f.name))
|
|
else:
|
|
subcalls.append('towire_{}(&p, {});'
|
|
.format(basetype, f.name))
|
|
|
|
return template.format(
|
|
name=self.name,
|
|
args=''.join(args),
|
|
enumname=self.enum.name,
|
|
field_decls='\n'.join(field_decls),
|
|
subcalls=str(subcalls),
|
|
)
|
|
|
|
def add_truncate_check(self, subcalls):
|
|
# Report if truncated, otherwise print.
|
|
subcalls.append('if (!cursor) {\n'
|
|
'printf("**TRUNCATED**\\n");\n'
|
|
'return;\n'
|
|
'}')
|
|
|
|
def print_printwire_array(self, subcalls, basetype, f, num_elems):
|
|
if f.has_array_helper():
|
|
subcalls.append('printwire_{}_array(tal_fmt(NULL, "%s.{}", fieldname), &cursor, &plen, {});'
|
|
.format(basetype, f.name, num_elems))
|
|
else:
|
|
subcalls.append('printf("[");')
|
|
subcalls.append('for (size_t i = 0; i < {}; i++) {{'
|
|
.format(num_elems))
|
|
subcalls.append('{} v;'.format(f.fieldtype.name))
|
|
if f.fieldtype.is_assignable():
|
|
subcalls.append('v = fromwire_{}(&cursor, plen);'
|
|
.format(f.fieldtype.name, basetype))
|
|
else:
|
|
# We don't handle this yet!
|
|
assert(basetype not in varlen_structs)
|
|
|
|
subcalls.append('fromwire_{}(&cursor, &plen, &v);'
|
|
.format(basetype))
|
|
|
|
self.add_truncate_check(subcalls)
|
|
|
|
subcalls.append('printwire_{}(tal_fmt(NULL, "%s.{}", fieldname), &v);'
|
|
.format(basetype, f.name))
|
|
subcalls.append('}')
|
|
subcalls.append('printf("]");')
|
|
|
|
def print_printwire(self, is_header):
|
|
template = printwire_header_templ if is_header else printwire_impl_templ
|
|
fields = ['\t{} {};\n'.format(f.fieldtype.name, f.name) for f in self.fields if f.is_len_var]
|
|
|
|
subcalls = CCode()
|
|
for f in self.fields:
|
|
basetype = f.basetype()
|
|
|
|
for c in f.comments:
|
|
subcalls.append('/*{} */'.format(c))
|
|
|
|
if f.is_len_var:
|
|
subcalls.append('{} {} = fromwire_{}(&cursor, &plen);'
|
|
.format(f.fieldtype.name, f.name, basetype))
|
|
self.add_truncate_check(subcalls)
|
|
continue
|
|
|
|
subcalls.append('printf("{}=");'.format(f.name))
|
|
if f.is_padding():
|
|
subcalls.append('printwire_pad(tal_fmt(NULL, "%s.{}", fieldname), &cursor, &plen, {});'
|
|
.format(f.name, f.num_elems))
|
|
self.add_truncate_check(subcalls)
|
|
elif f.is_array():
|
|
self.print_printwire_array(subcalls, basetype, f, f.num_elems)
|
|
self.add_truncate_check(subcalls)
|
|
elif f.is_variable_size():
|
|
self.print_printwire_array(subcalls, basetype, f, f.lenvar)
|
|
self.add_truncate_check(subcalls)
|
|
else:
|
|
if f.optional:
|
|
subcalls.append("if (fromwire_bool(&cursor, &plen)) {")
|
|
|
|
if f.is_assignable():
|
|
subcalls.append('{} {} = fromwire_{}(&cursor, &plen);'
|
|
.format(f.fieldtype.name, f.name, basetype))
|
|
else:
|
|
# Don't handle these yet.
|
|
assert(basetype not in varlen_structs)
|
|
subcalls.append('{} {};'.
|
|
format(f.fieldtype.name, f.name))
|
|
subcalls.append('fromwire_{}(&cursor, &plen, &{});'
|
|
.format(basetype, f.name))
|
|
|
|
self.add_truncate_check(subcalls)
|
|
subcalls.append('printwire_{}(tal_fmt(NULL, "%s.{}", fieldname), &{});'
|
|
.format(basetype, f.name, f.name))
|
|
if f.optional:
|
|
subcalls.append("} else {")
|
|
self.add_truncate_check(subcalls)
|
|
subcalls.append("}")
|
|
|
|
return template.format(
|
|
name=self.name,
|
|
fields=''.join(fields),
|
|
enum=self.enum,
|
|
subcalls=str(subcalls)
|
|
)
|
|
|
|
|
|
def find_message(messages, name):
|
|
for m in messages:
|
|
if m.name == name:
|
|
return m
|
|
|
|
return None
|
|
|
|
|
|
def find_message_with_option(messages, optional_messages, name, option):
|
|
fullname = name + "_" + option.replace('-', '_')
|
|
|
|
base = find_message(messages, name)
|
|
if not base:
|
|
raise ValueError('Unknown message {}'.format(name))
|
|
|
|
m = find_message(optional_messages, fullname)
|
|
if not m:
|
|
# Add a new option.
|
|
m = copy.deepcopy(base)
|
|
m.name = fullname
|
|
optional_messages.append(m)
|
|
return m
|
|
|
|
|
|
parser = argparse.ArgumentParser(description='Generate C from CSV')
|
|
parser.add_argument('--header', action='store_true', help="Create wire header")
|
|
parser.add_argument('--bolt', action='store_true', help="Generate wire-format for BOLT")
|
|
parser.add_argument('--printwire', action='store_true', help="Create print routines")
|
|
parser.add_argument('headerfilename', help='The filename of the header')
|
|
parser.add_argument('enumname', help='The name of the enum to produce')
|
|
parser.add_argument('files', nargs='*', help='Files to read in (or stdin)')
|
|
options = parser.parse_args()
|
|
|
|
# Maps message names to messages
|
|
messages = []
|
|
messages_with_option = []
|
|
comments = []
|
|
includes = []
|
|
prevfield = None
|
|
|
|
# Read csv lines. Single comma is the message values, more is offset/len.
|
|
for line in fileinput.input(options.files):
|
|
# #include gets inserted into header
|
|
if line.startswith('#include '):
|
|
includes.append(line)
|
|
continue
|
|
|
|
by_comments = line.rstrip().split('#')
|
|
|
|
# Emit a comment if they included one
|
|
if by_comments[1:]:
|
|
comments.append(' '.join(by_comments[1:]))
|
|
|
|
parts = by_comments[0].split(',')
|
|
if parts == ['']:
|
|
continue
|
|
|
|
if len(parts) == 2:
|
|
# eg commit_sig,132
|
|
messages.append(Message(parts[0], Enumtype("WIRE_" + parts[0].upper(), parts[1]), comments))
|
|
comments = []
|
|
prevfield = None
|
|
else:
|
|
if len(parts) == 4:
|
|
# eg commit_sig,0,channel-id,8 OR
|
|
# commit_sig,0,channel-id,u64
|
|
m = find_message(messages, parts[0])
|
|
if m is None:
|
|
raise ValueError('Unknown message {}'.format(parts[0]))
|
|
elif len(parts) == 5:
|
|
# eg.
|
|
# channel_reestablish,48,your_last_per_commitment_secret,32,option209
|
|
m = find_message_with_option(messages, messages_with_option, parts[0], parts[4])
|
|
else:
|
|
raise ValueError('Line {} malformed'.format(line.rstrip()))
|
|
|
|
f = Field(m.name, parts[2], parts[3], comments, prevfield)
|
|
m.addField(f)
|
|
# If it used prevfield as lenvar, keep that for next
|
|
# time (multiple fields can use the same lenvar).
|
|
if not f.lenvar:
|
|
prevfield = parts[2]
|
|
comments = []
|
|
|
|
header_template = """/* This file was generated by generate-wire.py */
|
|
/* Do not modify this file! Modify the _csv file it was generated from. */
|
|
#ifndef LIGHTNING_{idem}
|
|
#define LIGHTNING_{idem}
|
|
#include <ccan/tal/tal.h>
|
|
#include <wire/wire.h>
|
|
{includes}
|
|
enum {enumname} {{
|
|
{enums}}};
|
|
const char *{enumname}_name(int e);
|
|
|
|
{func_decls}
|
|
#endif /* LIGHTNING_{idem} */
|
|
"""
|
|
|
|
impl_template = """/* This file was generated by generate-wire.py */
|
|
/* Do not modify this file! Modify the _csv file it was generated from. */
|
|
#include <{headerfilename}>
|
|
#include <ccan/mem/mem.h>
|
|
#include <ccan/tal/str/str.h>
|
|
#include <stdio.h>
|
|
|
|
const char *{enumname}_name(int e)
|
|
{{
|
|
\tstatic char invalidbuf[sizeof("INVALID ") + STR_MAX_CHARS(e)];
|
|
|
|
\tswitch ((enum {enumname})e) {{
|
|
\t{cases}
|
|
\t}}
|
|
|
|
\tsnprintf(invalidbuf, sizeof(invalidbuf), "INVALID %i", e);
|
|
\treturn invalidbuf;
|
|
}}
|
|
|
|
{func_decls}
|
|
"""
|
|
|
|
print_header_template = """/* This file was generated by generate-wire.py */
|
|
/* Do not modify this file! Modify the _csv file it was generated from. */
|
|
#ifndef LIGHTNING_{idem}
|
|
#define LIGHTNING_{idem}
|
|
#include <ccan/tal/tal.h>
|
|
#include <devtools/print_wire.h>
|
|
{includes}
|
|
|
|
void print{enumname}_message(const u8 *msg);
|
|
|
|
{func_decls}
|
|
#endif /* LIGHTNING_{idem} */
|
|
"""
|
|
|
|
print_template = """/* This file was generated by generate-wire.py */
|
|
/* Do not modify this file! Modify the _csv file it was generated from. */
|
|
#include "{headerfilename}"
|
|
#include <ccan/mem/mem.h>
|
|
#include <ccan/tal/str/str.h>
|
|
#include <common/utils.h>
|
|
#include <stdio.h>
|
|
|
|
void print{enumname}_message(const u8 *msg)
|
|
{{
|
|
\tswitch ((enum {enumname})fromwire_peektype(msg)) {{
|
|
\t{printcases}
|
|
\t}}
|
|
|
|
\tprintf("UNKNOWN: %s\\n", tal_hex(msg, msg));
|
|
}}
|
|
|
|
{func_decls}
|
|
"""
|
|
|
|
idem = re.sub(r'[^A-Z]+', '_', options.headerfilename.upper())
|
|
if options.printwire:
|
|
if options.header:
|
|
template = print_header_template
|
|
else:
|
|
template = print_template
|
|
elif options.header:
|
|
template = header_template
|
|
else:
|
|
template = impl_template
|
|
|
|
# Dump out enum, sorted by value order.
|
|
enums = ""
|
|
for m in messages:
|
|
for c in m.comments:
|
|
enums += '\t/*{} */\n'.format(c)
|
|
enums += '\t{} = {},\n'.format(m.enum.name, m.enum.value)
|
|
includes = '\n'.join(includes)
|
|
cases = ['case {enum.name}: return "{enum.name}";'.format(enum=m.enum) for m in messages]
|
|
printcases = ['case {enum.name}: printf("{enum.name}:\\n"); printwire_{name}("{name}", msg); return;'.format(enum=m.enum, name=m.name) for m in messages]
|
|
|
|
if options.printwire:
|
|
decls = [m.print_printwire(options.header) for m in messages + messages_with_option]
|
|
else:
|
|
fromwire_decls = [m.print_fromwire(options.header) for m in messages + messages_with_option]
|
|
towire_decls = towire_decls = [m.print_towire(options.header) for m in messages + messages_with_option]
|
|
decls = fromwire_decls + towire_decls
|
|
|
|
print(template.format(
|
|
headerfilename=options.headerfilename,
|
|
cases='\n\t'.join(cases),
|
|
printcases='\n\t'.join(printcases),
|
|
idem=idem,
|
|
includes=includes,
|
|
enumname=options.enumname,
|
|
enums=enums,
|
|
func_decls='\n'.join(decls)))
|
|
|