def finish_regroup(hlir):
"""At this point, all nodes have been moved from hlir.objects.vec
into separate attributes of hlir.
Remove the unnecessary node."""
if len(hlir.objects) != 0:
addError(
'cleaning up',
f'{len(hlir.objects)} unexpected nodes found in hlir.objects')
hlir.remove_attr('objects')
def check_meta_fields(fldinfos):
count = Counter(fldinfos)
for name, typename in count:
if count[(name, typename)] > 1:
def fld_urtype_info(fld):
if fld.type == fld.urtype:
return f'{fld.type.name}'
return f'{fld.type.name} (aka {fld.urtype.name})'
typeinfos = ''.join((f' - {fld.name}: {fld_urtype_info(fld)}\n'
for fldname, fldtype in fldinfos))
addError(
'getting metadata',
f'The name {name} appears in {count[(name, typename)]} metadata fields with different types:\n{typeinfos}'
)
def get_hdrinst(arg0, component):
if 'path' in arg0:
hdrinst_name = arg0.path.name
hdrtype = component.header.urtype
dvar = parser.parserLocals.get(hdrinst_name, 'Declaration_Variable')
if dvar:
insts = [hi for hi in hlir.header_instances['StructField'] if hi.urtype.name == hdrtype.name]
if len(insts) == 1:
hdrinst = insts[0]
elif len(insts) == 0:
# note: it is defined as a local variable
return dvar.urtype
else:
addError("Finding header", f"There is no single header that corresponds to {hdrtype.name}")
else:
return hlir.header_instances.get(hdrinst_name, 'Declaration_Variable', lambda hi: hi.urtype.name == hdrtype.name)
elif 'hdr_ref' in (mexpr := component.methodCall.method.expr):
hdrinst = mexpr.hdr_ref
return hdrinst
if smem.smem_type not in ["direct_counter", "direct_meter"]:
continue
#= gen_make_smem_code(smem, table)
for smem in unique_everseen([smem for table, smem in hlir.all_meters + hlir.all_counters if smem.smem_type not in ["direct_counter", "direct_meter"]]):
#= gen_make_smem_code(smem)
for smem in hlir.registers:
#= gen_make_smem_code(smem)
all_locals = unique_everseen([(param.name, format_type(param.type)) for table in hlir.tables for local in table.control.controlLocals["P4Action"] for param in local.parameters.parameters])
all_locals_dict = dict(all_locals)
if len(all_locals) != len(all_locals_dict):
names = [name for name, _type in all_locals]
dups = unique_everseen([name for name in names if names.count(name) > 1])
addError("Collecting counters, meters, registers and controls' local variables", "The following names are used with different types, which is currently unsupported: {}".format(", ".join(dups)))
for locname, loctype in all_locals:
#[ $loctype $locname;
# Note: currently all control locals are put together into the global state
for ctl in hlir.controls:
for local_var_decl in ctl.controlLocals['Declaration_Variable'] + ctl.controlLocals['Declaration_Instance']:
if 'name' in local_var_decl.urtype and local_var_decl.urtype.name in ('counter', 'direct_counter', 'meter', 'direct_meter', 'register'):
continue
#[ ${format_type(local_var_decl.type, varname = local_var_decl.name, resolve_names = False)};
type_names = P4Node(sorted(typepars, key=lambda n: n.name))
values = P4Node(sorted(named_apppars, key=lambda n: n.type.path.name))
elif (extern := node).node_type == 'Type_Extern':
if 'parameters' not in extern:
extern.typeargs = {}
return
type_names = extern.typeParameters.parameters
values = extern.parameters.parameters
typeargs = dict(zip(type_names.map('name'), values))
if 'typeargs' in method:
if node.typeargs != typeargs:
addError(
'getting type arguments',
f'Found differing sets of type arguments for {node.name}')
return
node.typeargs = typeargs
def attrs_typeargs(hlir: P4Node):
"""Resolve all Type_Name nodes to real type nodes"""
for extern in hlir.all_nodes.by_type('Type_Extern'):
for method in extern.methods:
method.env_node = extern
for extern in hlir.all_nodes.by_type('Type_Extern'):
set_typeargs(extern)
def check_no_leftovers(base_node, leftover_nodes, node_description):
if len(leftover_nodes) != 0:
addError(
f'visiting {node_description}s',
f'{len(leftover_nodes)} {node_description}s of unexpected type found'
)