Private/Reader.ps1
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using namespace System.Management.Automation.Language # Turns files (or plain objects) into a tree of values, without running any code. $script:PsdRxOp = New-Object regex '^(.*\S) (\+=|=\+|\|=|-=|:=)$' $script:PsdRxNearOp = New-Object regex '^(.*\S) ([-+=|:]{1,3})$' $script:PsdDirectives = @('!merge', '!include', '!name', '!schema', '!types') $script:PsdOperators = @('+=', '=+', '|=', '-=', ':=') function New-PsdFileRec { param([string] $Full, [string] $Text) $leaf = [IO.Path]::GetFileName($Full) $ext = [IO.Path]::GetExtension($leaf) $name = [IO.Path]::GetFileNameWithoutExtension($leaf) $lines = $null if ($null -ne $Text) { $lines = $Text -split '\r?\n' } @{ Id = New-PsdId Path = $Full Key = Get-PsdPathKey $Full Name = $name Ext = $ext Ns = $name Dir = [IO.Path]::GetDirectoryName($Full) Lines = $lines Root = $null Merge = New-PsdList Include = New-PsdList Schema = $null Types = New-PsdList Synthetic = $false Named = $false Label = $null } } function New-PsdNode { param([string] $Kind, $Value, $File, $Ast, [string] $Path) $n = @{ Id = New-PsdId; K = $Kind; V = $Value; File = $File; Line = 0; Col = 0; Text = $null; Path = $Path Parts = $null; Ops = $null; Ifs = $null; Base = $null; Op = $null; Arg = $null; Offset = 0 KeyLine = 0; KeyCol = 0; KeyLen = 0 } if ($Ast) { $n.Line = $Ast.Extent.StartLineNumber $n.Col = $Ast.Extent.StartColumnNumber $n.Text = $Ast.Extent.Text } $n } function New-PsdMapNode { param($File, $Ast, [string] $Path) $n = New-PsdNode 'M' ([ordered]@{}) $File $Ast $Path $n.Ops = New-PsdList $n.Ifs = New-PsdList $n } function Copy-PsdLocation { param($From, $To) $To.File = $From.File; $To.Line = $From.Line; $To.Col = $From.Col; $To.Text = $From.Text $To.KeyLine = $From.KeyLine; $To.KeyCol = $From.KeyCol; $To.KeyLen = $From.KeyLen } # --- Positions ---------------------------------------------------------------- # Maps an index in a string's value to a line and column in the file, using the # text of the string as written (quotes, doubled quotes, escapes). function Get-PsdSourcePos { param($Node, [int] $ValueIndex) $text = $Node.Text if (-not $text) { return @{ Line = $Node.Line; Col = $Node.Col } } $pos = 0 if ($text.StartsWith("@'") -or $text.StartsWith('@"')) { $pos = $text.IndexOf("`n") + 1 $pos += $ValueIndex } elseif ("'`"".IndexOf($text[0]) -ge 0 -or ([int]$text[0] -ge 0x2018 -and [int]$text[0] -le 0x201E)) { $double = ($text[0] -eq '"') -or ([int]$text[0] -ge 0x201C) $pos = 1 $vi = 0 while ($vi -lt $ValueIndex -and $pos -lt $text.Length) { $c = $text[$pos] if ($double -and $c -eq '`') { $pos += 2 } elseif ($pos + 1 -lt $text.Length -and $text[$pos + 1] -eq $c -and ("'`"".IndexOf($c) -ge 0)) { $pos += 2 } else { $pos++ } $vi++ } } else { $pos = $ValueIndex } if ($pos -gt $text.Length) { $pos = $text.Length } $before = $text.Substring(0, $pos) $nl = $before.LastIndexOf("`n") if ($nl -lt 0) { return @{ Line = $Node.Line; Col = $Node.Col + $pos } } $lineNo = $Node.Line + ($before.Split("`n").Count - 1) @{ Line = $lineNo; Col = $pos - $nl } } function Get-PsdNodeLoc { param($Node, [int] $Start = -1, [int] $Length = 0) if ($null -eq $Node) { return @{ File = $null; Line = 0; Col = 0; Len = 0 } } if ($Start -lt 0) { $len = $Length if ($len -le 0 -and $Node.Text) { $len = ($Node.Text -split '\r?\n')[0].Length } return @{ File = $Node.File; Line = $Node.Line; Col = $Node.Col; Len = $len } } $p = Get-PsdSourcePos $Node ($Node.Offset + $Start) @{ File = $Node.File; Line = $p.Line; Col = $p.Col; Len = $Length } } function Add-PsdNodeError { param($Ctx, [string] $Code, [string] $Message, $Node, [int] $Start = -1, [int] $Length = 0, [string[]] $Hint = @(), [string[]] $Extra = @()) $loc = Get-PsdNodeLoc $Node $Start $Length $key = $null if ($Node) { $key = $Node.Path } Add-PsdError $Ctx $Code $Message -File $loc.File -Line $loc.Line -Column $loc.Col -Length $loc.Len -Key $key -Hint $Hint -Extra $Extra } # An error at the first line of some parsed text. function Add-PsdExtentError { param($Ctx, [string] $Code, [string] $Message, $File, $Extent) Add-PsdError $Ctx $Code $Message -File $File -Line $Extent.StartLineNumber -Column $Extent.StartColumnNumber -Length (($Extent.Text -split '\r?\n')[0].Length) } # An error at a key of a map. function Add-PsdKeyError { param($Ctx, [string] $Code, [string] $Message, $KInfo, [string] $Key = $null, [string[]] $Hint = @()) Add-PsdError $Ctx $Code $Message -File $KInfo.File -Line $KInfo.Line -Column $KInfo.Col -Length $KInfo.Len -Key $Key -Hint $Hint } # --- Reading files -------------------------------------------------------------- function Read-PsdFile { param([string] $Path, $Ctx, $From = $null, [string] $Code = 'PSD100') $full = [IO.Path]::GetFullPath($Path) $key = Get-PsdPathKey $full if ($Ctx.Files.ContainsKey($key)) { return $Ctx.Files[$key] } if (-not [IO.File]::Exists($full)) { Add-PsdNodeError $Ctx $Code "the file $full doesn't exist." $From return $null } if ($Ctx.Files.Count -ge $Ctx.Limits.MaxFiles) { Add-PsdLimitError $Ctx 'MaxFiles' "while loading $full" return $null } $ext = [IO.Path]::GetExtension($full) if ($ext -ine '.psd1' -and $null -ne $Ctx.Loader) { return (Read-PsdLoadedFile $full $Ctx $From) } if ($ext -ieq '.ps1') { Add-PsdNodeError $Ctx 'PSD108' "$full is a script, and PsdUtil runs no code." $From -Hint @('Pass -Loader { param($Path) & $Path } to read scripts, or write the file as .psd1.') return $null } $info = New-Object IO.FileInfo $full if ($info.Length -gt $Ctx.Limits.MaxFileSize) { Add-PsdLimitError $Ctx 'MaxFileSize' "by $full, which is $($info.Length) bytes" return $null } try { $bytes = [IO.File]::ReadAllBytes($full) } catch { Add-PsdError $Ctx 'PSD100' "the file $full can't be read: $($_.Exception.InnerException.Message)" return $null } if ($bytes.Length -ge 2 -and $bytes[0] -eq 0xFF -and $bytes[1] -eq 0xFE) { $text = [Text.Encoding]::Unicode.GetString($bytes, 2, $bytes.Length - 2) } elseif ($bytes.Length -ge 2 -and $bytes[0] -eq 0xFE -and $bytes[1] -eq 0xFF) { $text = [Text.Encoding]::BigEndianUnicode.GetString($bytes, 2, $bytes.Length - 2) } else { try { $text = (New-Object System.Text.UTF8Encoding $false, $true).GetString($bytes) } catch { Add-PsdError $Ctx 'PSD107' "the file isn't valid UTF-8. Save it as UTF-8." -File (New-PsdFileRec $full $null) return $null } if ($text.Length -gt 0 -and $text[0] -eq [char]0xFEFF) { $text = $text.Substring(1) } } ConvertFrom-PsdText $text $full $Ctx } # Reads a file through -Loader: what it returns is the file, a map or a generated class made from one. Its # directives ('!merge', '!include', '!name', '!schema') work as in a .psd1, paths relative to the file's folder. function Read-PsdLoadedFile { # From is used inside the error script block below. [Diagnostics.CodeAnalysis.SuppressMessageAttribute('PSReviewUnusedParameter', 'From')] param([string] $Full, $Ctx, $From) $rec = New-PsdFileRec $Full $null $Ctx.Files[$rec.Key] = $rec $fail = { param([string] $Message) if ($From) { Add-PsdNodeError $Ctx 'PSD108' $Message $From } else { Add-PsdError $Ctx 'PSD108' $Message -File $rec } } try { $out = @(& $Ctx.Loader $Full | Where-Object { $null -ne $_ }) } catch { & $fail "-Loader couldn't read $($Full): $($_.Exception.Message)" return $rec } if ($out.Count -ne 1) { & $fail "-Loader has to give one map for $Full, but it gave $($out.Count) values." return $rec } $value = $out[0] if (-not (Test-PsdMapLike $value)) { & $fail "-Loader has to give a map for $Full, but it gave $(Get-PsdKindText $value)." return $rec } $rec.Root = ConvertFrom-PsdObject $value $rec $Ctx '' -AllowDirective $rec } function ConvertFrom-PsdText { param([string] $Text, [string] $Full, $Ctx) $rec = New-PsdFileRec $Full $Text $Ctx.Files[$rec.Key] = $rec $tokens = $null; $errors = $null $ast = [Parser]::ParseInput($Text, $Full, [ref]$tokens, [ref]$errors) if ($errors.Count -gt 0) { foreach ($e in $errors) { if ($e.ErrorId -eq 'DuplicateKeyInHashLiteral') { Add-PsdExtentError $Ctx 'PSD102' "the key $($e.Extent.Text) is there twice in one map. Keys ignore case, so 'a' and 'A' count as the same key." $rec $e.Extent } else { Add-PsdExtentError $Ctx 'PSD101' "PowerShell can't read this: $($e.Message.TrimEnd('.'))." $rec $e.Extent } } return $rec } if ($ast.ParamBlock -or $ast.BeginBlock -or $ast.ProcessBlock -or $ast.DynamicParamBlock) { Add-PsdError $Ctx 'PSD105' 'a data file can only contain one @{ }, not a script.' -File $rec -Line 1 return $rec } $stmts = @() if ($ast.EndBlock) { $stmts = @($ast.EndBlock.Statements) } if ($stmts.Count -eq 0) { Add-PsdError $Ctx 'PSD103' "the file is empty. A data file is one map: @{ ... }" -File $rec return $rec } $expr = Get-PsdStatementExpression $stmts[0] if ($expr -isnot [HashtableAst]) { Add-PsdExtentError $Ctx 'PSD103' 'a data file has to be one map: @{ ... }' $rec $stmts[0].Extent return $rec } if ($stmts.Count -gt 1) { Add-PsdExtentError $Ctx 'PSD104' 'there is something after the map. A data file is exactly one @{ ... }' $rec $stmts[1].Extent return $rec } $rec.Root = ConvertFrom-PsdHashAst $expr $rec $Ctx '' 0 $true $false $rec } function Get-PsdStatementExpression { param($Statement) if ($Statement -is [PipelineAst] -and $Statement.PipelineElements.Count -eq 1) { $el = $Statement.PipelineElements[0] if ($el -is [CommandExpressionAst] -and $el.Redirections.Count -eq 0) { return $el.Expression } } $null } function Get-PsdRejectText { param($Ast) if ($Ast -is [ConvertExpressionAst]) { return "casts like $($Ast.Type.Extent.Text) can't be used in a data file." } if ($Ast -is [ScriptBlockExpressionAst]) { return "script blocks { } can't be used in a data file, because they would be code." } if ($Ast -is [ParenExpressionAst] -or $Ast -is [SubExpressionAst]) { return "( ) and `$( ) can't be used in a data file." } if ($Ast -is [VariableExpressionAst]) { return "variables like $($Ast.Extent.Text) can't be used in a data file. Only `$true, `$false and `$null work. For environment variables, use '!<env:NAME>'." } if ($Ast -is [ExpandableStringExpressionAst]) { return "text in double quotes can't contain `$variables or `$( ). Use single quotes, or write ``$ for a dollar sign." } if ($Ast -is [PipelineAst] -or $Ast -is [CommandAst]) { return "commands can't be used in a data file. If this is text, put it in quotes." } if ($Ast -is [StringConstantExpressionAst]) { return "text needs quotes in a data file: '$($Ast.Value)'." } "this can't be used in a data file. Only text, numbers, `$true, `$false, `$null, @{ } and @( ) are allowed." } function Add-PsdReject { param($Ast, $File, $Ctx) Add-PsdExtentError $Ctx 'PSD105' (Get-PsdRejectText $Ast) $File $Ast.Extent } function New-PsdStringNode { param([string] $Value, $File, $Ast, [string] $Path, $Ctx) $node = New-PsdNode 'S' $Value $File $Ast $Path if ($Value.IndexOf('!<') -lt 0) { return $node } try { $tpl = ConvertFrom-PsdTemplate $Value } catch [System.FormatException] { Add-PsdNodeError $Ctx 'PSD300' $_.Exception.Message $node ([int]$_.Exception.Data['PsdPos']) ([int]$_.Exception.Data['PsdLen']) return $node } if (-not $tpl.HasRef) { $node.V = -join $tpl.Parts.ToArray() return $node } $node.K = 'T' $node.Parts = $tpl.Parts $node } function ConvertFrom-PsdAst { param($Ast, $File, $Ctx, [string] $Path, [int] $Depth, [bool] $InIf) if ($Depth -gt $Ctx.Limits.MaxDepth) { $deep = New-PsdNode 'S' $null $File $Ast $Path Add-PsdLimitError $Ctx 'MaxDepth' "by nesting at $Path" $deep return $deep } if ($Ast -is [HashtableAst]) { return (ConvertFrom-PsdHashAst $Ast $File $Ctx $Path $Depth $false $InIf) } if ($Ast -is [ArrayExpressionAst] -or $Ast -is [ArrayLiteralAst]) { $items = New-PsdList # @(@(1, 2)) is one flat list in PowerShell. $flat = $Ast -is [ArrayExpressionAst] -and $Ast.SubExpression.Statements.Count -eq 1 foreach ($e in (Get-PsdArrayElements $Ast { param($st) Add-PsdReject $st $File $Ctx })) { if ($flat -and $e -is [ArrayExpressionAst]) { foreach ($x in (ConvertFrom-PsdAst $e $File $Ctx $Path ($Depth + 1) $InIf).V) { $items.Add($x) } continue } $items.Add((ConvertFrom-PsdAst $e $File $Ctx (Join-PsdPath $Path ([int]$items.Count)) ($Depth + 1) $InIf)) } return (New-PsdNode 'L' $items $File $Ast $Path) } if ($Ast -is [StringConstantExpressionAst]) { if ($Ast.StringConstantType -ne [StringConstantType]::BareWord) { return (New-PsdStringNode $Ast.Value $File $Ast $Path $Ctx) } } elseif ($Ast -is [ExpandableStringExpressionAst]) { if ($Ast.NestedExpressions.Count -eq 0) { return (New-PsdStringNode $Ast.Value $File $Ast $Path $Ctx) } } elseif ($Ast -is [ConstantExpressionAst]) { return (New-PsdNode 'S' $Ast.Value $File $Ast $Path) } elseif ($Ast -is [VariableExpressionAst]) { switch ($Ast.VariablePath.UserPath.ToLowerInvariant()) { 'true' { return (New-PsdNode 'S' $true $File $Ast $Path) } 'false' { return (New-PsdNode 'S' $false $File $Ast $Path) } 'null' { return (New-PsdNode 'S' $null $File $Ast $Path) } } } Add-PsdReject $Ast $File $Ctx New-PsdNode 'S' $null $File $Ast $Path } function ConvertFrom-PsdHashAst { param($Ast, $File, $Ctx, [string] $Path, [int] $Depth, [bool] $IsRoot, [bool] $InIf) $node = New-PsdMapNode $File $Ast $Path foreach ($pair in $Ast.KeyValuePairs) { $keyAst = $pair.Item1 $kx = $keyAst.Extent $kinfo = @{ Line = $kx.StartLineNumber; Col = $kx.StartColumnNumber; Len = $kx.Text.Length; Text = $kx.Text; File = $File } if ($keyAst -isnot [StringConstantExpressionAst]) { Add-PsdKeyError $Ctx 'PSD106' "keys have to be text. Put this key in quotes: '$($kx.Text)'." $kinfo continue } $kc = Get-PsdKeyClass ([string]$keyAst.Value) $kinfo $Ctx if ($kc.Kind -eq 'Bad') { continue } $valueAst = Get-PsdStatementExpression $pair.Item2 if ($null -eq $valueAst) { Add-PsdReject $pair.Item2 $File $Ctx; continue } $childPath = if ($kc.Kind -in 'Plain', 'Op') { Join-PsdPath $Path $kc.Name } else { $Path } $value = ConvertFrom-PsdAst $valueAst $File $Ctx $childPath ($Depth + 1) ($InIf -or $kc.Kind -eq 'If') Add-PsdMapEntry $node $kc $value $File $Ctx $IsRoot $InIf } $node } # Decides what a key is: a plain key, a merge operator, an !if, a directive. function Get-PsdKeyClass { # Ctx is used inside the error script block below. [Diagnostics.CodeAnalysis.SuppressMessageAttribute('PSReviewUnusedParameter', 'Ctx')] param([string] $Key, $KInfo, $Ctx) $kc = @{ Kind = 'Plain'; Name = $Key; Op = $null; Cond = $null; CondOffset = 0; Info = $KInfo } $err = { param($code, $msg, [string[]]$hint) Add-PsdKeyError $Ctx $code $msg $KInfo $Key $hint $kc.Kind = 'Bad' } $name = $Key if ($Key.StartsWith('!!')) { $name = $Key.Substring(1) } elseif ($Key.StartsWith('!')) { $m = [regex]::Match($Key, '^!if(\s+(.*))?$', 'IgnoreCase, Singleline') if ($m.Success) { $kc.Kind = 'If' $kc.Cond = $m.Groups[2].Value $kc.CondOffset = $Key.Length - $kc.Cond.Length return $kc } $lower = $Key.ToLowerInvariant() if ($script:PsdDirectives -contains $lower) { $kc.Kind = 'Dir'; $kc.Name = $lower; return $kc } $dym = Get-PsdDidYouMean $Key ($script:PsdDirectives + '!if') & $err 'PSD205' "'$Key' isn't a directive." @($dym, "Directives are !merge, !include, !name, !schema and !if. A real key that starts with ! is written '!$Key'.") return $kc } if ([regex]::IsMatch($name, '(?<!!)!<')) { & $err 'PSD305' "keys can't contain references. Keys stay fixed, so paths and schemas always work." @() return $kc } $m = $script:PsdRxOp.Match($name) if ($m.Success) { $kc.Kind = 'Op' $kc.Name = $m.Groups[1].Value $kc.Op = $m.Groups[2].Value return $kc } $m = $script:PsdRxNearOp.Match($name) if ($m.Success) { $dym = Get-PsdDidYouMean $m.Groups[2].Value $script:PsdOperators & $err 'PSD209' "'$($m.Groups[2].Value)' at the end of this key looks like a merge operator, but isn't one." @($dym, 'Merge operators are +=, =+, |=, -= and :=, after a space.') return $kc } $kc.Name = $name $kc } function Add-PsdMapEntry { param($Node, $Kc, $Value, $File, $Ctx, [bool] $IsRoot, [bool] $InIf) $ki = $Kc.Info $Value.KeyLine = $ki.Line; $Value.KeyCol = $ki.Col; $Value.KeyLen = $ki.Len switch ($Kc.Kind) { 'Plain' { $Node.V[$Kc.Name] = $Value } 'Op' { $Node.Ops.Add(@{ Key = $Kc.Name; Op = $Kc.Op; Arg = $Value; File = $File; Line = $ki.Line; Col = $ki.Col; Len = $ki.Len; Text = $ki.Text; Path = (Join-PsdPath $Node.Path $Kc.Name) }) } 'If' { $ifNode = @{ Id = New-PsdId; Cond = $null; Body = $Value; File = $File; Line = $ki.Line; Col = $ki.Col; Text = $ki.Text Offset = $Kc.CondOffset; Path = $Node.Path; Raw = $Kc.Cond; K = 'I' } if ($InIf) { Add-PsdKeyError $Ctx 'PSD206' "an !if can't contain another !if. Join the conditions with -and instead." $ki return } if ($Value.K -ne 'M') { Add-PsdKeyError $Ctx 'PSD206' "an !if needs a map after it: '$($Kc.Cond)' = @{ ... }" $ki return } try { $ifNode.Cond = ConvertFrom-PsdCondition $Kc.Cond } catch [System.FormatException] { Add-PsdNodeError $Ctx 'PSD400' $_.Exception.Message $ifNode ([int]$_.Exception.Data['PsdPos']) ([int]$_.Exception.Data['PsdLen']) return } $Node.Ifs.Add($ifNode) } 'Dir' { if (-not $IsRoot) { Add-PsdKeyError $Ctx 'PSD206' "'$($Kc.Name)' only works at the top level of a file." $ki return } Read-PsdDirective $File $Kc.Name $Value $ki $Ctx } } } # The item nodes of a list node, or the node itself: what a value that can be one or many holds. function Get-PsdNodeItems { param($Node) if ($Node.K -eq 'L') { $Node.V } else { $Node } } function Get-PsdPathStrings { param($Value, [string] $Directive, $Ctx, [string] $Shape) $out = New-PsdList foreach ($it in (Get-PsdNodeItems $Value)) { if ($it.K -eq 'S' -and $it.V -is [string] -and $it.V.Length -gt 0) { $out.Add(@{ Path = $it.V; Only = $null; Node = $it }) } elseif ($it.K -eq 'T') { Add-PsdNodeError $Ctx 'PSD206' "paths in '$Directive' can't contain references." $it } elseif ($Directive -eq '!merge' -and $it.K -eq 'M') { $spec = Read-PsdMergeMap $it $Ctx if ($spec) { $out.Add($spec) } } else { Add-PsdNodeError $Ctx 'PSD206' "'$Directive' takes $Shape." $it } } , $out } # '!merge' = @{ Path = '...'; Keys = 'A', 'B' } as a path entry, or $null when something is wrong with it. function Read-PsdMergeMap { param($Item, $Ctx) $ok = $true foreach ($k in $Item.V.PSBase.Keys) { if ($k -notin 'Path', 'Keys') { Add-PsdNodeError $Ctx 'PSD206' "'$k' doesn't belong here. '!merge' takes @{ Path = '...'; Keys = 'A', 'B' }." $Item.V[$k] $ok = $false } } $p = $Item.V['Path'] if ($null -eq $p -or $p.K -ne 'S' -or $p.V -isnot [string]) { Add-PsdNodeError $Ctx 'PSD206' "this needs a Path: @{ Path = './file.psd1'; Keys = 'A' }." $Item return $null } $keys = $null if ($Item.V['Keys']) { $keys = New-PsdList foreach ($x in (Get-PsdNodeItems $Item.V['Keys'])) { if ($x.K -eq 'S' -and $x.V -is [string]) { $keys.Add($x.V) } else { Add-PsdNodeError $Ctx 'PSD206' 'Keys has to be a key name or a list of key names.' $x; $ok = $false } } } if ($ok) { @{ Path = $p.V; Only = $keys; Node = $Item } } } function Read-PsdDirective { param($File, [string] $Name, $Value, $KInfo, $Ctx) switch ($Name) { '!merge' { foreach ($x in (Get-PsdPathStrings $Value '!merge' $Ctx "a path, a list of paths, or @{ Path = '...'; Keys = 'A', 'B' }")) { $File.Merge.Add($x) } } '!include' { foreach ($x in (Get-PsdPathStrings $Value '!include' $Ctx 'a path or a list of paths')) { $File.Include.Add($x) } } '!types' { if (-not $Ctx.SchemaMode) { Add-PsdKeyError $Ctx 'PSD205' "'!types' only works in a schema file." $KInfo return } foreach ($x in (Get-PsdPathStrings $Value '!types' $Ctx 'a path or a list of paths to .psm1 files')) { $File.Types.Add($x) } } '!schema' { if ($Value.K -ne 'S' -or $Value.V -isnot [string]) { Add-PsdNodeError $Ctx 'PSD206' "'!schema' takes the path of a schema file." $Value; return } $File.Schema = @{ Path = $Value.V; Node = $Value } } '!name' { if ($Value.K -ne 'S' -or $Value.V -isnot [string] -or -not $script:PsdRxFileName.IsMatch($Value.V)) { Add-PsdNodeError $Ctx 'PSD206' "'!name' takes a name without spaces or signs like :, @ or !." $Value return } if ($Value.V -ieq 'this') { Add-PsdNodeError $Ctx 'PSD204' "'this' can't be a file's name, because this:: always means the file it's written in." $Value return } $File.Ns = $Value.V if ($File.Synthetic) { $File.Name = $Value.V $File.Label = $Value.V $File.Named = $true $File.Path = [IO.Path]::Combine($File.Dir, "($($Value.V))") } } } } # --- Plain objects to nodes ------------------------------------------------------- function New-PsdSyntheticFile { param([string] $Name, [string] $Dir) if (-not $Dir) { $Dir = (Get-Location -PSProvider FileSystem).ProviderPath } $rec = New-PsdFileRec ([IO.Path]::Combine($Dir, "($Name)")) $null $rec.Name = $Name $rec.Ext = '' $rec.Ns = $Name $rec.Synthetic = $true $rec.Label = "the $Name" $rec } # The map a generated class was made from, or $null. function Get-PsdKeptMap { param($Value) if ($null -eq $Value -or $Value -is [string] -or $Value -is [System.Collections.IEnumerable]) { return $null } $prop = $Value.GetType().GetProperty('__PsdMap') if ($null -eq $prop) { return $null } $prop.GetValue($Value, $null) } # AllowName: '!name' at the top works, for maps given to Merge-Psd. AllowDirective: every directive at the top # works, for files read through -Loader. function ConvertFrom-PsdObject { param($Value, $File, $Ctx, [string] $Path, [int] $Depth = 0, [switch] $AllowName, [switch] $AllowDirective) if ($Depth -gt $Ctx.Limits.MaxDepth) { $deep = New-PsdNode 'S' $null $File $null $Path Add-PsdLimitError $Ctx 'MaxDepth' "by nesting at $Path" $deep return $deep } if ($null -eq $Value) { return (New-PsdNode 'S' $null $File $null $Path) } if ($Value -is [System.Collections.IDictionary]) { $node = New-PsdMapNode $File $null $Path foreach ($k in @($Value.PSBase.Keys)) { $kinfo = @{ Line = 0; Col = 0; Len = 0; Text = [string]$k; File = $File } $kc = Get-PsdKeyClass ([string]$k) $kinfo $Ctx if ($kc.Kind -eq 'Bad') { continue } $childPath = if ($kc.Kind -in 'Plain', 'Op') { Join-PsdPath $Path $kc.Name } else { $Path } $child = ConvertFrom-PsdObject $Value[$k] $File $Ctx $childPath ($Depth + 1) if ($kc.Kind -eq 'Dir') { if ($Depth -eq 0 -and ($AllowDirective -or ($AllowName -and $kc.Name -eq '!name'))) { Read-PsdDirective $File $kc.Name $child $kinfo $Ctx } else { Add-PsdError $Ctx 'PSD206' "'$($kc.Name)' only works in files." -File $File -Key ([string]$k) } continue } Add-PsdMapEntry $node $kc $child $File $Ctx $false $false } return $node } if ($Value -is [string]) { return (New-PsdStringNode $Value $File $null $Path $Ctx) } if ($Value -is [System.Collections.IEnumerable]) { $items = New-PsdList foreach ($x in $Value) { $items.Add((ConvertFrom-PsdObject $x $File $Ctx (Join-PsdPath $Path ([int]$items.Count)) ($Depth + 1))) } return (New-PsdNode 'L' $items $File $null $Path) } if ($Value -is [System.Management.Automation.PSCustomObject]) { $map = [ordered]@{} foreach ($p in $Value.PSObject.Properties) { $map[$p.Name] = $p.Value } return (ConvertFrom-PsdObject $map $File $Ctx $Path $Depth -AllowName:$AllowName -AllowDirective:$AllowDirective) } $kept = Get-PsdKeptMap $Value if ($null -ne $kept) { return (ConvertFrom-PsdObject $kept $File $Ctx $Path $Depth -AllowName:$AllowName -AllowDirective:$AllowDirective) } New-PsdNode 'S' $Value $File $null $Path } |