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22 commits

Author SHA1 Message Date
whitequark da48c05bdf _tools: extract most utility methods to a private package. 
We don't want to guarantee backwards compatibility for most of them.
 2019-10-12 22:40:48 +00:00
whitequark b90687c988 Rename remaining wrap methods to cast. 
Following commit d72d4a55.
 2019-10-11 13:28:26 +00:00
whitequark a658cb2bbf hdl.ast: deprecate shapes like (1, True) in favor of signed(1). 
This is a great improvement in clarity.
 2019-10-11 13:22:08 +00:00
whitequark 6aabdc0a73 hdl.ast: add an explicit Shape class, included in prelude. 
Shapes have long been a part of nMigen, but represented using tuples.
This commit adds a Shape class (using namedtuple for backwards
compatibility), and accepts anything castable to Shape (including
enums, ranges, etc) anywhere a tuple was accepted previously.

In addition, `signed(n)` and `unsigned(n)` are added as aliases for
`Shape(n, signed=True)` and `Shape(n, signed=False)`, transforming
code such as `Signal((8, True))` to `Signal(signed(8))`.
These aliases are also included in prelude.

Preparation for #225.
 2019-10-11 12:52:41 +00:00
whitequark 1976310bf0 hdl.rec: fix using Enum subclass as shape if direction is specified. 
Also improves error messages.

Fixes #224.
 2019-09-22 17:23:32 +00:00
whitequark 4c582ef609 hdl.rec: allow using Enum subclass as shape. 
Fixes #223.
 2019-09-22 15:17:40 +00:00
whitequark 0ab0a74ec1 hdl.rec: respect modifications to signals in Record.like(). 
Fixes #126.
 2019-07-08 10:59:15 +00:00
whitequark 7059cb4931 hdl.rec: thread src_loc_at to all inner Signals and Records. 2019-07-03 14:49:20 +00:00
whitequark 5800f00776 hdl.rec: accept Record(src_loc_at=...). 2019-07-03 14:35:48 +00:00
whitequark 6b843b5be6 hdl.rec: implement slicing by component names. 
Fixes #121.
 2019-07-02 17:46:53 +00:00
whitequark 34f110100a hdl.rec: implement Record.like. 
Fixes #120.
 2019-07-02 17:46:53 +00:00
whitequark a1940c5528 hdl.rec: unbreak hasattr(rec, ...). 
hasattr() requires that AttributeError be raised. Change __getitem__
to raise AttributeError, too, since it is fundamentally just sugar
for getattr().
 2019-06-03 07:43:31 +00:00
whitequark 2b7dc37ffe hdl.rec: allow providing fields during construction. 
This allows creating records populated with e.g. signals with custom
names, or sub-records that are instances of Record subclasses.
 2019-05-25 22:06:56 +00:00
whitequark 744e33f42d hdl: make all public Value classes other than Record final. 
In some cases, nMigen uses type() instead of isinstance() to dispatch
on types. Make sure all such uses of type() are robust; in addition,
make it clear that nMigen AST classes are not meant to be subclassed.
(Record is an exception.)

Fixes #65.
 2019-05-12 05:40:17 +00:00
whitequark ce1eff5464 hdl.rec: implement Record.connect. 
Fixes #31.
 2019-04-21 06:37:08 +00:00
whitequark 611c25f909 hdl.rec: fix slicing of records. 2019-04-19 19:55:39 +00:00
anuejn 3c95299c4e hdl.rec: separate record and signal name with __, not _. 
This makes names of signals within records less ambiguous, in case
they themselves have underscores within them.
 2019-03-25 14:26:00 +00:00
whitequark e93bf4bf4b tracer: factor out get_var_name(default=). 2019-03-03 18:21:22 +00:00
whitequark cac4b10b82 hdl.rec: remove __slots__. 
Left in by mistake.
 2019-03-03 18:21:22 +00:00
whitequark 3c07d8d52c hdl.rec: include record name in error message. 2019-01-01 03:39:12 +00:00
whitequark 031a9e2616 hdl.rec: use a helpful error on unknown field reference. 2019-01-01 03:35:34 +00:00
whitequark 92a96e1644 hdl.rec: add basic record support. 2018-12-28 13:22:10 +00:00