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15. PlatformAdaptionLayer
This class abstracts system operations used by the DLR that could possibly be platform specific. Hosts can derive from this class and implement operations, such as opening a file. For example, the Silverlight PAL could go to the server to fetch a file.
To use a custom PAL, you derive from this type and implement the members important to you. You also need to derive a custom ScriptHost that returns the custom PAL instance. Then when you create your ScriptRuntime, you explicitly create a ScriptRuntimeSetup and set the HostType property to your custome ScriptHost.
PlatformAdaptionLayer Summary:
public class PlatformAdaptationLayer {
public static readonly PlatformAdaptationLayer Default;
public virtual Assembly LoadAssembly(string name);
public virtual Assembly LoadAssemblyFromPath(string path);
public virtual void TerminateScriptExecution(int exitCode);
public StringComparer PathComparer { get; }
public virtual bool FileExists(string path);
public virtual bool DirectoryExists(string path);
public virtual Stream OpenInputFileStream(string path, FileMode mode, FileAccess access, FileShare share);
public virtual Stream OpenInputFileStream(string path, FileMode mode, FileAccess access, FileShare share, int bufferSize);
public virtual Stream OpenInputFileStream(string path);
public virtual Stream OpenOutputFileStream(string path);
public virtual string[] GetFiles(string path, string searchPattern);
public virtual string GetFullPath(string path);
}
15.1. PlatformAdaptionLayer Members
- PlatformAdaptionLayer
- Usually you do not create instances of the base PlatformAdaptionLayer class. Instead you subclass it and provide your derived type via the ScriptHost for a ScriptRuntime.