IScanner.ScanTokenAndProvideInfoAboutIt(TokenInfo, Int32) Method

Reference

Definition

Namespace:: Microsoft.VisualStudio.Package

Assembly:: Microsoft.VisualStudio.Package.LanguageService.14.0.dll

Assembly:: Microsoft.VisualStudio.Package.LanguageService.15.0.dll

Package:: Microsoft.VisualStudio.Package.LanguageService.15.0 v17.12.40392

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Scan the next token and fill in syntax coloring details about it in tokenInfo.

public:
 bool ScanTokenAndProvideInfoAboutIt(Microsoft::VisualStudio::Package::TokenInfo ^ tokenInfo, int % state);

bool ScanTokenAndProvideInfoAboutIt(Microsoft::VisualStudio::Package::TokenInfo const & tokenInfo, int & state);

public bool ScanTokenAndProvideInfoAboutIt (Microsoft.VisualStudio.Package.TokenInfo tokenInfo, ref int state);

abstract member ScanTokenAndProvideInfoAboutIt : Microsoft.VisualStudio.Package.TokenInfo * int -> bool

Public Function ScanTokenAndProvideInfoAboutIt (tokenInfo As TokenInfo, ByRef state As Integer) As Boolean

Parameters

tokenInfo: TokenInfo

Keeps information about token.

state: Int32

Keeps track of scanner state. In: state after last token. Out: state after current token.

Returns

Boolean

Examples

This is an example of the way a colorizer might use this method.

using Microsoft.VisualStudio.TextManager.Interop;  
using Microsoft.VisualStudio.Package;  

namespace MyLanguagePackage  
{  

    public class MyColorizer : IVsColorizer  
    {  
        IScanner scanner;  

        public int ColorizeLine(int line,  
                                int length,  
                                IntPtr ptr,  
                                int state,  
                                uint[] attrs)  
        {  
            int linepos = 0;  
            if (this.scanner != null)  
            {  
                try  
                {  
                    string text = Marshal.PtrToStringUni(ptr, length);  

                    this.scanner.SetSource(text, 0);  

                    TokenInfo tokenInfo = new TokenInfo();  

                    while (this.scanner.ScanTokenAndProvideInfoAboutIt(tokenInfo, ref state))  
                    {  
                        // Do something with tokenInfo  
                    }  
                }  
                catch (Exception)  
                {  
                    // Catch and ignore exceptions  
                }  
            }  
            return state;  
        }  
    }  
}

Remarks

Call the SetSource method to set the line that is to be parsed. Then the ScanTokenAndProvideInfoAboutIt method is typically called repeatedly until all tokens are obtained.

Applies to

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