This PR builds on top of #1393.
It mainly modifies the grammar by changing the way SelectedExpressions
are declared, to allow blocks to be empty.
---------
Co-authored-by: chriseth <chris@ethereum.org>
Fixes#1493
Allow passing machines as argument when instantiating submachines, as
in:
```
use std::machines::binary::Binary;
machine Main with degree: 262144 {
reg pc[@pc];
reg X[<=];
reg Y[<=];
reg Z[<=];
reg A;
Binary binary;
WithArg sub(binary);
instr and X, Y -> Z ~ binary.and;
instr or X, Y -> Z ~ binary.or;
instr xor X, Y -> Z ~ binary.xor;
...
}
machine WithArg(bin: Binary) {
reg pc[@pc];
reg X[<=];
reg Y[<=];
reg Z[<=];
reg A;
reg B;
instr and X, Y -> Z ~ bin.and;
instr or X, Y -> Z ~ bin.or;
instr xor X, Y -> Z ~ bin.xor;
...
}
```
Allow VM instructions to use the `link` notation, unifying the way
machines are linked from VMs and block machines.
Previous syntax for "external instructions" not allowed anymore, and
should use the new `link` syntax.
This PR is part of issue https://github.com/powdr-labs/powdr/pull/1345.
In particular, it adds the struct BlockExpression to Expressions to
homogenize the structure before including source references.
This PR is part of issue https://github.com/powdr-labs/powdr/pull/1345.
In particular, it adds the struct MatchExpression to Expressions to
homogenise the structure before including source references.
This PR is part of issue https://github.com/powdr-labs/powdr/pull/1345.
In particular, it adds the struct UnaryOperation to Expressions to
homogenise the structure before including source references.
This PR is part of issue #1345.
In particular, it adds the struct BinaryOperation to Expressions to
homogenise the structure before including source references.
---------
Co-authored-by: Thibaut Schaeffer <schaeffer.thibaut@gmail.com>
This PR is part of issue https://github.com/powdr-labs/powdr/pull/1345.
In particular, it adds the struct Number to Expressions to homogenize
the structure before including source references.
Adds binary operation precedence support to avoid unnecessary
parentheses in expression printed format
- #962
---------
Co-authored-by: chriseth <chris@ethereum.org>
Allows braced blocks everywhere where expressions are expected.
The statements in those blocks can be `let x` or `let x = ...`.
The former declares a new witness column, the latter just binds a local
variable.
fixes#959
