public ExpressionEmitter(JsonTextWriter writer, EmitterContext context)
{
this.writer = writer;
this.context = context;
this.converter = new ExpressionConverter(context);
}
public static LanguageExpression FormatCrossScopeResourceId(ExpressionConverter expressionConverter, ScopeData scopeData, string fullyQualifiedType, IEnumerable <LanguageExpression> nameSegments)
{
var arguments = new List <LanguageExpression>();
switch (scopeData.RequestedScope)
{
case ResourceScopeType.TenantScope:
arguments.Add(new JTokenExpression(fullyQualifiedType));
arguments.AddRange(nameSegments);
return(new FunctionExpression("tenantResourceId", arguments.ToArray(), Array.Empty <LanguageExpression>()));
case ResourceScopeType.SubscriptionScope:
if (scopeData.SubscriptionIdProperty != null)
{
arguments.Add(expressionConverter.ConvertExpression(scopeData.SubscriptionIdProperty));
}
arguments.Add(new JTokenExpression(fullyQualifiedType));
arguments.AddRange(nameSegments);
return(new FunctionExpression("subscriptionResourceId", arguments.ToArray(), Array.Empty <LanguageExpression>()));
case ResourceScopeType.ResourceGroupScope:
// We avoid using the 'resourceId' function at all here, because its behavior differs depending on the scope that it is called FROM.
LanguageExpression scope;
if (scopeData.SubscriptionIdProperty == null)
{
if (scopeData.ResourceGroupProperty == null)
{
scope = new FunctionExpression("resourceGroup", Array.Empty <LanguageExpression>(), new LanguageExpression[] { new JTokenExpression("id") });
}
else
{
var subscriptionId = new FunctionExpression("subscription", Array.Empty <LanguageExpression>(), new LanguageExpression[] { new JTokenExpression("subscriptionId") });
var resourceGroup = expressionConverter.ConvertExpression(scopeData.ResourceGroupProperty);
scope = ExpressionConverter.GenerateResourceGroupScope(subscriptionId, resourceGroup);
}
}
else
{
if (scopeData.ResourceGroupProperty == null)
{
throw new NotImplementedException($"Cannot format resourceId with non-null subscription and null resourceGroup");
}
var subscriptionId = expressionConverter.ConvertExpression(scopeData.SubscriptionIdProperty);
var resourceGroup = expressionConverter.ConvertExpression(scopeData.ResourceGroupProperty);
scope = ExpressionConverter.GenerateResourceGroupScope(subscriptionId, resourceGroup);
}
// We've got to DIY it, unfortunately. The resourceId() function behaves differently when used at different scopes, so is unsuitable here.
return(ExpressionConverter.GenerateScopedResourceId(scope, fullyQualifiedType, nameSegments));
case ResourceScopeType.ManagementGroupScope:
if (scopeData.ManagementGroupNameProperty != null)
{
var managementGroupScope = expressionConverter.GenerateManagementGroupResourceId(scopeData.ManagementGroupNameProperty, true);
return(ExpressionConverter.GenerateScopedResourceId(managementGroupScope, fullyQualifiedType, nameSegments));
}
// We need to do things slightly differently for Management Groups, because there is no IL to output for "Give me a fully-qualified resource id at the current scope",
// and we don't even have a mechanism for reliably getting the current scope (e.g. something like 'deployment().scope'). There are plans to add a managementGroupResourceId function,
// but until we have it, we should generate unqualified resource Ids. There should not be a risk of collision, because we do not allow mixing of resource scopes in a single bicep file.
return(ExpressionConverter.GenerateUnqualifiedResourceId(fullyQualifiedType, nameSegments));
default:
throw new NotImplementedException($"Cannot format resourceId for scope {scopeData.RequestedScope}");
}
}
public void EmitResourceIdReference(ModuleSymbol moduleSymbol, SyntaxBase?indexExpression, SyntaxBase newContext)
{
var converterForContext = this.converter.CreateConverterForIndexReplacement(ExpressionConverter.GetModuleNameSyntax(moduleSymbol), indexExpression, newContext);
var resourceIdExpression = converterForContext.GetFullyQualifiedResourceId(moduleSymbol);
var serialized = ExpressionSerializer.SerializeExpression(resourceIdExpression);
writer.WriteValue(serialized);
}
