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### Did you check existing issues?
- [X] I have read all the [tree-sitter docs](https://tree-sitter.github.io/tree-sitter/using-parsers) if it relates to using the parser
- [X] I have searched the…
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### 🐛 Describe the bug
This issue occurs during export deserialization of symint values, when we have a sympy.Expr like `a/b`, this decomposes into `a * PowByNatural(b, -1)`. The PowByNatural seems…
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```
What steps will reproduce the problem?
1. Define query 'All pts who have 123397009|Injury of anatomical site|'
2. Try to change querydef:
a. Double-click on existing criterion
b. Click Edit…
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Hi, it would be great to have support for s-expressions.
We might implement our own parser, or reuse some code:
- https://github.com/antlr/grammars-v4/blob/master/sexpression/sexpression.g4
- @…
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There should be a way to check a grammar for a TOKEN_REF that goes to "skip" or off-channel, but I can't do that because we have to be able to go across trees--one is in the parser, and the other is i…
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The `expr` and `exprComp` trees in the grammar are almost identical. This is unnecessary IMO, the rationale behind is that it prevents the usage of the wrong kind of expression (component instead of d…
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As @jpfairbanks has pointed out in #2, Catlab includes a `Formula` data type for representing mathematical expressions (e.g. `sin(x)` or `x^2+1`) as expression trees. Catlab is not trying to be a conv…
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cmp_direct tries to generate a cmpb for a 1-byte comparison, but the number is promoted to a 2-byte type by T_CAST, cmpb not generated.
This is not a big problem on the 6809 because 6809 has the c…
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Expression trees support only a subset of the things that could be semantically meaningful. Consider allowing them to support the following constructs:
- The null-coalescing operators such as a?.b, a?…
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This is a follow-up to [ http://lists.ironpython.com/pipermail/users-
ironpython.com/2009-December/011856.html;
](http://lists.ironpython.com/pipermail/users-
ironpython.com/2009-December/011856.html;…