private static IEnumerable <string> GetImports(DirectivesParser directives)
{
var imports = new List <string>
{
"System",
"System.Linq",
"System.Collections.Generic",
"Microsoft.VisualStudio.Services.WebApi",
"aggregator.Engine"
};
imports.AddRange(directives.Imports);
return(imports.Distinct());
}
public RuleEngine(IAggregatorLogger logger, string[] ruleCode, SaveMode mode, bool dryRun)
{
State = EngineState.Unknown;
this.logger = logger;
this.saveMode = mode;
this.DryRun = dryRun;
var directives = new DirectivesParser(logger, ruleCode);
if (!directives.Parse())
{
State = EngineState.Error;
return;
}
if (directives.Language == DirectivesParser.Languages.Csharp)
{
var types = new List <Type>()
{
typeof(object),
typeof(System.Linq.Enumerable),
typeof(System.Collections.Generic.CollectionExtensions),
typeof(Microsoft.VisualStudio.Services.WebApi.IdentityRef)
};
var references = types.ConvertAll(t => t.Assembly).Distinct();
var scriptOptions = ScriptOptions.Default
.WithEmitDebugInformation(true)
.WithReferences(references)
// Add namespaces
.WithImports(
"System",
"System.Linq",
"System.Collections.Generic",
"Microsoft.VisualStudio.Services.WebApi"
);
this.roslynScript = CSharpScript.Create <string>(
code: directives.GetRuleCode(),
options: scriptOptions,
globalsType: typeof(Globals));
}
else
{
logger.WriteError($"Cannot execute rule: language is not supported.");
State = EngineState.Error;
}
}
private static IEnumerable <Assembly> LoadReferences(DirectivesParser directives)
{
var types = new List <Type>()
{
typeof(object),
typeof(System.Linq.Enumerable),
typeof(System.Collections.Generic.CollectionExtensions),
typeof(Microsoft.VisualStudio.Services.WebApi.IdentityRef),
typeof(WorkItemWrapper)
};
var references = types.ConvertAll(t => t.Assembly);
// user references
foreach (var reference in directives.References)
{
var name = new AssemblyName(reference);
references.Add(Assembly.Load(name));
}
return(references.Distinct());
}
public RuleEngine(IAggregatorLogger logger, string[] ruleCode, SaveMode mode, bool dryRun)
{
State = EngineState.Unknown;
this.logger = logger;
this.saveMode = mode;
this.DryRun = dryRun;
var directives = new DirectivesParser(logger, ruleCode);
if (!directives.Parse())
{
State = EngineState.Error;
return;
}
if (directives.Language == DirectivesParser.Languages.Csharp)
{
var references = LoadReferences(directives);
var imports = GetImports(directives);
var scriptOptions = ScriptOptions.Default
.WithEmitDebugInformation(true)
.WithReferences(references)
// Add namespaces
.WithImports(imports)
;
this.roslynScript = CSharpScript.Create <string>(
code: directives.GetRuleCode(),
options: scriptOptions,
globalsType: typeof(Globals));
}
else
{
logger.WriteError($"Cannot execute rule: language is not supported.");
State = EngineState.Error;
}
}
