diff options
Diffstat (limited to 'scripts/pdl/ast.py')
| -rw-r--r-- | scripts/pdl/ast.py | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/scripts/pdl/ast.py b/scripts/pdl/ast.py index b07f6ad..5ade0fa 100644 --- a/scripts/pdl/ast.py +++ b/scripts/pdl/ast.py @@ -66,7 +66,10 @@ class Constraint(Node): @dataclass class Field(Node): parent: Node = field(init=False) - + cond: Optional[Constraint] = field(init=False, default=None) + # Backlink to the (optional) optional field referencing + # this field as condition. + cond_for: Optional['Field'] = field(init=False, default=None) @node('checksum_field') class ChecksumField(Field): @@ -274,8 +277,14 @@ def convert_(obj: object) -> object: loc = SourceRange(loc['file'], SourceLocation(**loc['start']), SourceLocation(**loc['end'])) constructor = constructors_.get(kind) members = {'loc': loc, 'kind': kind} + cond = None for name, value in obj.items(): - if name != 'kind' and name != 'loc': + if name == 'cond': + cond = convert_(value) + elif name != 'kind' and name != 'loc': members[name] = convert_(value) - return constructor(**members) + val = constructor(**members) + if cond: + val.cond = cond + return val raise Exception('Unhandled json object type') |