142 lines
5.1 KiB
VB.net
142 lines
5.1 KiB
VB.net
#Region "Microsoft.VisualBasic::5a2718267afb35043292b9acb96f6df4, R#\Language\Syntax\SyntaxImplements\RequireSyntax.vb"
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' Author:
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'
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' asuka (amethyst.asuka@gcmodeller.org)
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' xie (genetics@smrucc.org)
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' xieguigang (xie.guigang@live.com)
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'
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' Copyright (c) 2018 GPL3 Licensed
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'
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'
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' GNU GENERAL PUBLIC LICENSE (GPL3)
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'
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'
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' This program is free software: you can redistribute it and/or modify
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' it under the terms of the GNU General Public License as published by
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' the Free Software Foundation, either version 3 of the License, or
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' (at your option) any later version.
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'
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' This program is distributed in the hope that it will be useful,
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' but WITHOUT ANY WARRANTY; without even the implied warranty of
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' MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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' GNU General Public License for more details.
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'
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' You should have received a copy of the GNU General Public License
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' along with this program. If not, see <http://www.gnu.org/licenses/>.
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' /********************************************************************************/
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' Summaries:
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' Code Statistics:
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' Total Lines: 87
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' Code Lines: 73 (83.91%)
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' Comment Lines: 4 (4.60%)
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' - Xml Docs: 0.00%
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'
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' Blank Lines: 10 (11.49%)
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' File Size: 3.70 KB
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' Module RequireSyntax
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'
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' Function: [Imports], Require
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'
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'
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' /********************************************************************************/
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#End Region
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Imports Microsoft.VisualBasic.Language
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Imports Microsoft.VisualBasic.Linq
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Imports SMRUCC.Rsharp.Interpreter.ExecuteEngine
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Imports SMRUCC.Rsharp.Interpreter.ExecuteEngine.ExpressionSymbols
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Imports SMRUCC.Rsharp.Interpreter.ExecuteEngine.ExpressionSymbols.DataSets
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Imports SMRUCC.Rsharp.Language
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Imports SMRUCC.Rsharp.Language.TokenIcer
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Namespace Language.Syntax.SyntaxParser.SyntaxImplements
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Module RequireSyntax
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Public Function Require(names As Token(), opts As SyntaxBuilderOptions) As SyntaxResult
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Dim packages As New List(Of Expression)
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For Each name As SyntaxResult In names _
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.SplitByTopLevelDelimiter(TokenType.comma) _
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.Where(Function(b) Not b.isComma) _
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.Select(Function(tokens)
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Return opts.ParseExpression(tokens, opts)
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End Function)
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If name.isException Then
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Return name
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Else
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packages += name.expression
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End If
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Next
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Return New SyntaxResult(New Require(packages))
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End Function
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Public Function [Imports](code As IEnumerable(Of Token()), opts As SyntaxBuilderOptions) As SyntaxResult
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With code.ToArray
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If .ElementAt(Scan0).isKeyword("imports") AndAlso .ElementAtOrDefault(2).isKeyword("from") Then
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Dim packages = .ElementAt(1).DoCall(Function(tokens) opts.ParseExpression(tokens, opts))
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Dim library As SyntaxResult =
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.ElementAt(3) _
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.DoCall(Function(tokens)
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Return opts.ParseExpression(tokens, opts)
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End Function)
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If packages.isException Then
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Return packages
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ElseIf library.isException Then
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Return library
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Else
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' imports packages from library
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Return New [Imports](
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packages:=packages.expression,
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library:=library.expression,
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source:=Nothing
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)
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End If
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ElseIf .ElementAt(Scan0).isKeyword("imports") Then
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If .Length = 1 Then
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' try interpreted as symbol reference
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Return New SyntaxResult(New SymbolReference(.ElementAt(Scan0)(Scan0)))
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End If
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' imports <*.R/*.dll file>
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Dim files As SyntaxResult =
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.ElementAt(1) _
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.DoCall(Function(tokens)
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Return opts.ParseExpression(tokens, opts)
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End Function)
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If files.isException Then
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Return files
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Else
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' imports file
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Return New [Imports](
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packages:=Nothing,
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library:=files.expression,
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source:=opts.source.source
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)
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End If
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Else
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Return SyntaxResult.CreateError(
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err:=New SyntaxErrorException,
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opts:=opts.SetCurrentRange(.ElementAt(Scan0))
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)
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End If
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End With
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End Function
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End Module
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End Namespace
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