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Improve assignment type inference (#21143)

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MartinGC94
2025-03-18 09:48:11 +05:00
committed by GitHub
parent 48c34fc3a7
commit 1edd258e3b
2 changed files with 32 additions and 1 deletions
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test/powershell/engine/Api/TypeInference.Tests.ps1
+20
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@@ -1469,6 +1469,26 @@ Describe "Type inference Tests" -tags "CI" {
$res.Count | Should -Be 0
}
It 'Infers right side of assignment expression' {
$res = [AstTypeInference]::InferTypeOf( { $Test1 = "Hello" }.Ast.Find({param($ast) $ast -is [Language.AssignmentStatementAst]}, $true))
$res.Count | Should -Be 1
$res.Name | Should -Be "System.String"
}
It 'Infers left side of assignment expression when it is a ConvertExpression' {
$res = [AstTypeInference]::InferTypeOf( { [string]$Test1 = 42 }.Ast.Find({param($ast) $ast -is [Language.AssignmentStatementAst]}, $true))
$res.Count | Should -Be 1
$res.Name | Should -Be "System.String"
}
It 'Infers left side of assignment expression when there is a ConvertExpression among other attributes' {
$res = [AstTypeInference]::InferTypeOf( {
[ValidateLength()] [string] [ValidatePattern()]$Test1 = 42
}.Ast.Find({param($ast) $ast -is [Language.AssignmentStatementAst]}, $true))
$res.Count | Should -Be 1
$res.Name | Should -Be "System.String"
}
It 'Infers type of all scope variable after variable assignment' {
$res = [AstTypeInference]::InferTypeOf( { $true = "Hello";$true }.Ast)
$res.Count | Should -Be 1