classDestructuringLowering

packages/deriver/src/Deriver/Lowerer/Control/DestructuringLowering.php:19

final class DestructuringLowering

Restricted visibility: declared "@visibility Deriver\Deriver\Lowerer\Declaration" and "@visibility Deriver\Deriver\Lowerer" and "@visibility Deriver\Deriver\Sources". Code outside that scope must not name this declaration.

Preserves array snapshots and shared cells while lowering assignment patterns.

Properties§

public LoweringScope $lowering

source §

Methods§

public function __construct(public LoweringScope $lowering)

source §

Parameters

$lowering LoweringScope Current callable compiler

public function assignment(Assign $node): string

source §

Evaluates a destructured source once before assigning its entries in order.

Parameters

$node Assign Assignment with an array or list pattern

Returns

string Assigned source value

Test cases 1

DestructuringLoweringTest::testAssignmentDelegatesOrdinaryVariableAssignments calls

Called from 1

method-call Deriver\Deriver\Lowerer\AssignmentLowering::lower() packages/deriver/src/Deriver/Lowerer/AssignmentLowering.php:35

Calls 6

method-call AssignmentLowering::lower() line 36
new AssignmentLowering line 36
static-call AssignmentPatterns::references() line 39
method-call DestructuringLowering::assign() line 40
method-call LoweringScope::expression() line 40
method-call DestructuringLowering::source() line 42

public function assign(List_|Array_ $pattern, string $value, string $address = ''): string

source §

Assigns nested patterns from an immutable value or a previously anchored reference.

Parameters

`$pattern`	`List_\|Array_`	Destination pattern
`$value`	`string`	Captured value register for ordinary destructuring
`$address`	`string`	Anchored source cell when the pattern contains references

Returns

string Assigned source value

Test cases 1

DestructuringLoweringTest::testAssignPreservesExplicitKeysAndMissingNumericPositions calls

Called from 5

Calls 7

static-call Literal::constant() line 62
method-call LoweringScope::expression() line 62
static-call AssignmentPatterns::references() line 63
method-call DestructuringLowering::assign() line 68
method-call LoweringScope::location() line 70
method-call AssignmentLowering::assign() line 76
new AssignmentLowering line 76

public function source(Expr $expression, bool $diagnostic): string

source §

Anchors writable storage or a temporary returned array before reference iteration.

Parameters

`$expression`	`Expr`	Evaluated source expression
`$diagnostic`	`bool`	Whether a non-reference return requires a target notice

Returns

string Source address register

Test cases 1

DestructuringLoweringTest::testSourceDistinguishesWritableStorageAndTemporaryValues calls

Called from 2

Calls 2

method-call LoweringScope::location() line 90
method-call LoweringScope::expression() line 92

Test cases 100§

Test cases that cover or call this symbol, from the coverage report and from the analyzed test sources.

Dedicated tests 3

Other tests reaching this symbol 97

Relations§

Instantiated in 4

Method calls 4