private EvaluationResult HasMount(Context context, ModuleLiteral env, EvaluationStackFrame args)
{
var engine = context.FrontEndHost.Engine;
var name = Convert.ToString(args[0].Value, CultureInfo.InvariantCulture);
GetProvenance(context, out AbsolutePath path, out LineInfo lineInfo);
var result = engine.TryGetMount(name, "Script", AmbientTypes.ScriptModuleId, out IMount mount);
switch (result)
{
case TryGetMountResult.Success:
return(EvaluationResult.True);
case TryGetMountResult.NameNullOrEmpty:
throw TryGetMountException.MountNameNullOrEmpty(env, new ErrorContext(pos: 1), lineInfo);
case TryGetMountResult.NameNotFound:
return(EvaluationResult.False);
default:
Contract.Assume(false, "Unexpected TryGetMountResult");
return(EvaluationResult.Undefined);
}
}
private EvaluationResult GetMount(Context context, ModuleLiteral env, EvaluationStackFrame args)
{
var engine = context.FrontEndHost.Engine;
var name = Convert.ToString(args[0].Value, CultureInfo.InvariantCulture);
GetProvenance(context, out AbsolutePath path, out LineInfo lineInfo);
var result = engine.TryGetMount(name, "Script", AmbientTypes.ScriptModuleId, out IMount mount);
switch (result)
{
case TryGetMountResult.Success:
return
(EvaluationResult.Create(ObjectLiteral.Create(
new Binding(MountNameObject, mount.Name, location: lineInfo),
new Binding(MountPathObject, mount.Path, location: lineInfo))));
case TryGetMountResult.NameNullOrEmpty:
throw TryGetMountException.MountNameNullOrEmpty(env, new ErrorContext(pos: 1), lineInfo);
case TryGetMountResult.NameNotFound:
// Check for case mismatch.
var mountNames = engine.GetMountNames("Script", BuildXL.Utilities.ModuleId.Invalid);
foreach (var mountName in mountNames)
{
if (string.Equals(name, mountName, StringComparison.OrdinalIgnoreCase))
{
throw TryGetMountException.MountNameCaseMismatch(env, name, mountName, new ErrorContext(pos: 1), lineInfo);
}
}
throw TryGetMountException.MountNameNotFound(env, name, mountNames, new ErrorContext(pos: 1), lineInfo);
default:
Contract.Assume(false, "Unexpected TryGetMountResult");
return(EvaluationResult.Undefined);
}
}