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Dereferencing Arrays Is Not Possible #6397

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IGI-111 opened this issue Aug 7, 2024 · 0 comments · May be fixed by #6941
Open

Dereferencing Arrays Is Not Possible #6397

IGI-111 opened this issue Aug 7, 2024 · 0 comments · May be fixed by #6941
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@esdrubal
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@IGI-111
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IGI-111 commented Aug 7, 2024

In Sway, developers can create a mutable reference to a variable using something like the following
snippet:

let mut x = 1;
let y = &mut x;
*y = 1

As expected this updates the value of x. However, a mutable reference is not really usable in case of an
array due to limitations in the parsing. In particular, the parser prohibts the use of parentheses on the
left-hand-side of an assignment. The following snippet does not compile:

let mut a = [1, 2];
let mut p = &mut a;
(*p)[1] = 1;
@IGI-111 IGI-111 added the audit-report Related to the audit report label Aug 7, 2024
esdrubal added a commit that referenced this issue Feb 19, 2025
@esdrubal
Implements deref in reassignement of projections.
7063057 
Implements dereferencing as LHS in reassignments for projections.

With this PR we will support:
 - `(*array)[0] = 1`
 - `(*tuple).0 = 1`
 - `(*struct).a = 1`

This allow includes support for nested references.

Fixes #6397
@esdrubal esdrubal linked a pull request Feb 19, 2025 that will close this issue
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esdrubal added a commit that referenced this issue Feb 19, 2025
@esdrubal
Implements deref in reassignement of projections.
18c0d39 
Implements dereferencing as LHS in reassignments for projections.

With this PR we will support:
 - `(*array)[0] = 1`
 - `(*tuple).0 = 1`
 - `(*struct).a = 1`

This allow includes support for nested references.

Fixes #6397
esdrubal added a commit that referenced this issue Feb 19, 2025
@esdrubal
Implements deref in reassignement of projections.
ecbd95a 
Implements dereferencing as LHS in reassignments for projections.

With this PR we will support:
 - `(*array)[0] = 1`
 - `(*tuple).0 = 1`
 - `(*struct).a = 1`

This allow includes support for nested references.

Fixes #6397
esdrubal added a commit that referenced this issue Feb 19, 2025
@esdrubal
Implements deref in reassignement of projections.
b72e89b 
Implements dereferencing as LHS in reassignments for projections.

With this PR we will support:
 - `(*array)[0] = 1`
 - `(*tuple).0 = 1`
 - `(*struct).a = 1`

This allow includes support for nested references.

Fixes #6397
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Implements deref in reassignment for projections. FuelLabs/sway
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@esdrubal @IGI-111