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debug: sequences: assignment expressions #1564

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merged 1 commit into from
May 28, 2023

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@flit flit commented May 26, 2023

Support C-style assignment expressions, such that variables can be assigned to in the middle of other expressions. Just as in C, the value of an assignment expression is the value assigned to the variable. While this syntax isn't documented in the Open-CMSIS-Pack specification, it is used in the Keil.LPC800_DFP pack and therefore is implicitly supported by debug sequences.

The patch replaces the assign_stmt AST node with assign_expr, with the lowest precedence (same precedence as in C).

Fixes #1563

Support C-style assignment expressions, such that variables can be
assigned to in the middle of other expressions. Just as in C, the
value of an assignment expression is the value assigned to the variable.
While this syntax isn't documented in the Open-CMSIS-Pack specification,
it is used in the Keil.LPC800_DFP pack and therefore is implicitly
supported by debug sequences.

The patch replaces the assign_stmt AST node with assign_expr, with the
lowest precedence (same precedence as in C).
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flit commented May 26, 2023

@imi415 Could you test this PR if you have time, please? Thanks! 🙏🏽

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imi415 commented May 27, 2023

@imi415 Could you test this PR if you have time, please? Thanks! 🙏🏽

Hi @flit , I have tested this on LPC804M101JHI33, it appears this PR does fixes this issue. Thanks!

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flit commented May 28, 2023

@imi415 Thanks for testing!

@flit flit merged commit 035f81b into pyocd:main May 28, 2023
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@flit flit deleted the bugfix/debug_seq_assign_expr branch May 28, 2023 18:41
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debug sequences: Assignment expression could have return values
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