private static void RenderProviderGetter(StringWriter rw,
InjectionSpecificationInjection injection,
EmittedKernelSpec spec)
{
if (injection.Singleton)
{
rw.WriteLine("static {0}() {{", injection.ConcreteClassName);
rw.WriteLine("{0} = new Lazy<{1}>(() => {{", spec.PrivateFieldName, spec.PrivateFieldType);
}
else
{
rw.WriteLine("{0} static {1} Get() {{", _renderAccessModifier, spec.ReturnType);
}
rw.WriteLine("var x = new {0}().Create();", injection.Provider);
rw.WriteLine("return x;");
if (injection.Singleton)
{
rw.WriteLine("});");
rw.WriteLine("}");
rw.WriteLine("{0} static {1} Get() {{ return {2}.Value; }}", _renderAccessModifier, spec.ReturnType, spec.PrivateFieldName);
rw.WriteLine("{0} static Lazy<{1}> GetLazy() {{ return {2}; }}", _renderAccessModifier, spec.ReturnType, spec.PrivateFieldName);
}
else
{
rw.WriteLine("}");
rw.WriteLine("{0} static Lazy<{1}> GetLazy() {{ return new Lazy<{1}>(Get); }}", _renderAccessModifier, spec.ReturnType);
}
}
private static void RenderClearAndRebind(StringWriter rw,
EmittedKernelSpec spec)
{
rw.WriteLine("{0} static void Clear() {{ {2} = new Lazy<{1}>(() => null); }}", _renderAccessModifier, spec.PrivateFieldType, spec.PrivateFieldName);
rw.WriteLine("{0} static void Rebind({1} value) {{ {2} = new Lazy<{1}>(() => value); }}",
_renderAccessModifier,
spec.PrivateFieldType,
spec.PrivateFieldName);
}
private static void AddRenderedKernel(EmittedKernelSpec spec, InjectionSpecificationInjection injection)
{
spec.Namespaces = CalculateNamespacesForInjection(injection);
spec.Namespaces = spec.Namespaces.Distinct().ToList();
if (RenderedKernels.ContainsKey(spec.KernelClassName))
{
throw new InvalidOperationException("Not unique?");
}
RenderedKernels.Add(spec.KernelClassName, spec);
}
private static void AddRenderedKernel(EmittedKernelSpec spec, InjectionSpecificationInjection injection)
{
spec.Namespaces = CalculateNamespacesForInjection(injection);
spec.Namespaces = spec.Namespaces.Distinct().ToList();
if (RenderedKernels.ContainsKey(spec.KernelClassName))
{
throw new InvalidOperationException("Not unique?");
}
RenderedKernels.Add(spec.KernelClassName, spec);
}
private static string RenderPrivateField(StringWriter rw,
EmittedKernelSpec spec,
bool singleton)
{
int indexOf = spec.KernelClassName.IndexOf('_');
string fieldName = spec.KernelClassName.Remove(0, indexOf);
if (singleton)
{
rw.WriteLine("private static Lazy<{0}> {1};", spec.PrivateFieldType, fieldName);
}
else
{
rw.WriteLine("private static {0} {1};", spec.PrivateFieldType, fieldName);
}
return(fieldName);
}
private static void RenderConcreteBuilderGetter(StringWriter rw,
InjectionSpecificationInjection injection,
EmittedKernelSpec spec)
{
if (!string.IsNullOrEmpty(injection.Provider))
{
throw new ParseException("Injection concrete '{0}' alse has provider '{1}' defined",
injection.Concrete,
injection.Provider);
}
string concreteToBuild = injection.Concrete;
CSharpFile fileDefinition = injection.NoScan
? new CSharpFile(concreteToBuild)
: FileScan(concreteToBuild, true);
if (injection.Singleton)
{
rw.WriteLine("static {0}() {{", injection.ConcreteClassName);
rw.WriteLine("{0} = new Lazy<{1}>(() => {{", spec.PrivateFieldName, spec.PrivateFieldType);
}
else
{
rw.WriteLine("{0} static {1} Get() {{", _renderAccessModifier, spec.ReturnType);
}
// There is no StackTrace on Metro :-(
if (!_inputTokens.Contains("NETFX_CORE"))
{
if (!spec.IsDebug)
{
rw.WriteLine("#if DEBUG");
}
rw.WriteLine("var stack = new StackTrace().GetFrames();");
rw.WriteLine("var methodName = stack.First().GetMethod().DeclaringType.Name;");
rw.WriteLine("if (stack.Count(y => y.GetMethod().DeclaringType.Name == methodName) > 2) { throw new Exception(\"Infinite loop detected\"); }");
if (!spec.IsDebug)
{
rw.WriteLine("#endif");
}
}
if (_benchmarking)
{
if (!spec.IsDebug)
{
rw.WriteLine("#if DEBUG");
}
rw.WriteLine("Debug.WriteLine(\"Thread(\" + System.Threading.Thread.CurrentThread.ManagedThreadId + \") : Kernel TypeConstruct: {0}\");", injection.ConcreteClassName);
rw.WriteLine("var stopWatch = System.Diagnostics.Stopwatch.StartNew();");
if (!spec.IsDebug)
{
rw.WriteLine("#endif");
}
}
rw.WriteLine("var x = new {0}(", concreteToBuild);
if (injection.ConstructorArgument != null && injection.ConstructorArgument.Length > 0)
{
InjectionSpecificationInjectionConstructorArgument[] cArgs = injection.ConstructorArgument;
for (int i = 0; i < cArgs.Length; i++)
{
if (i != 0)
{
rw.Write(',');
}
rw.WriteLine(injection.ConstructorArgument[i].Value);
}
}
else
{
IList <string> cArgs = fileDefinition.ConstructorArgs ?? new List <string>();
for (int i = 0; i < cArgs.Count; i++)
{
if (i != 0)
{
rw.Write(',');
}
string interfaceRequired = cArgs[i];
string concreteFunction = GetConcreteYieldingFunction(interfaceRequired);
rw.WriteLine(concreteFunction);
}
}
rw.WriteLine(");");
if (_benchmarking)
{
if (!spec.IsDebug)
{
rw.WriteLine("#if DEBUG");
}
rw.WriteLine("stopWatch.Stop();");
rw.WriteLine("Debug.WriteLine(\"Thread(\" + System.Threading.Thread.CurrentThread.ManagedThreadId + \") : Kernel TypeConstruct: {0}, MillisecondsElapsed: \" + stopWatch.ElapsedMilliseconds);", injection.ConcreteClassName);
if (!spec.IsDebug)
{
rw.WriteLine("#endif");
}
}
if (!injection.NoScan)
{
if (_benchmarking)
{
if (!spec.IsDebug)
{
rw.WriteLine("#if DEBUG");
}
rw.WriteLine("stopWatch = System.Diagnostics.Stopwatch.StartNew();");
if (!spec.IsDebug)
{
rw.WriteLine("#endif");
}
}
var hasProperties = RenderPropertyInjections(rw, fileDefinition);
if (_benchmarking)
{
if (!spec.IsDebug)
{
rw.WriteLine("#if DEBUG");
}
rw.WriteLine("stopWatch.Stop();");
if (hasProperties)
{
rw.WriteLine("Debug.WriteLine(\"Thread(\" + System.Threading.Thread.CurrentThread.ManagedThreadId + \") : Kernel TypePropertiesSet: {0}, MillisecondsElapsed: \" + stopWatch.ElapsedMilliseconds);", injection.ConcreteClassName);
}
if (!spec.IsDebug)
{
rw.WriteLine("#endif");
}
}
}
rw.WriteLine("return x;");
if (injection.Singleton)
{
rw.WriteLine("});");
rw.WriteLine("}");
rw.WriteLine("{0} static {1} Get() {{ return {2}.Value; }}", _renderAccessModifier, spec.ReturnType, spec.PrivateFieldName);
rw.WriteLine("{0} static Lazy<{1}> GetLazy() {{ return {2}; }}", _renderAccessModifier, spec.ReturnType, spec.PrivateFieldName);
}
else
{
rw.WriteLine("}");
rw.WriteLine("{0} static Lazy<{1}> GetLazy() {{ return new Lazy<{1}>(Get); }}", _renderAccessModifier, spec.ReturnType, spec.PrivateFieldName);
}
}
private static void Render(StringWriter rw, InjectionSpecificationInjection injection)
{
if (injection == null)
{
throw new ArgumentNullException("injection");
}
bool debugEmit = injection.DebugOnly;
if (debugEmit)
{
rw.WriteLine("#if DEBUG");
}
string outerKernelClassName = injection.ConcreteClassName;
var spec = new EmittedKernelSpec
{
KernelClassName = outerKernelClassName,
IsDebug = injection.DebugOnly,
Singleton = injection.Singleton
};
rw.WriteLine("[CoverageExclude]");
rw.WriteLine("{0} static class {1} {{", _renderAccessModifier, outerKernelClassName);
if (!string.IsNullOrEmpty(injection.Provider))
{
if (injection.Interface.Length == 1)
{
spec.PrivateFieldType = injection.Interface.First().Value;
}
else
{
if (string.IsNullOrEmpty(injection.Concrete))
{
throw new Exception("Providers with no concrete and interfaces.Count != 1 not supported");
}
spec.PrivateFieldType = injection.Concrete;
}
if (injection.Singleton)
{
spec.PrivateFieldName = RenderPrivateField(rw, spec, injection.Singleton);
}
spec.ReturnType = injection.Interface != null && injection.Interface.Length == 1
? injection.Interface.First().Value
: injection.Concrete;
RenderProviderGetter(rw, injection, spec);
if (injection.Singleton)
{
RenderClearAndRebind(rw, spec);
}
}
else if (!string.IsNullOrEmpty(injection.Concrete))
{
spec.PrivateFieldType = injection.Interface != null && injection.Interface.Length == 1
? injection.Interface.First().Value
: injection.Concrete;
spec.ReturnType = spec.PrivateFieldType;
if (injection.Singleton)
{
spec.PrivateFieldName = RenderPrivateField(rw, spec, injection.Singleton);
}
RenderConcreteBuilderGetter(rw, injection, spec);
if (injection.Singleton)
{
RenderClearAndRebind(rw, spec);
}
}
else
{
throw new ParseException("Injection defined with no Concrete or Provider?");
}
rw.WriteLine('}');
AddRenderedKernel(spec, injection);
// Render additional interfaces...
if (injection.Interface != null)
{
foreach (InjectionSpecificationInjectionInterface @interface in injection.Interface)
{
string interfaceName = @interface.Value;
if (!interfaceName.StartsWith("I"))
{
throw new ParseException(
string.Format(
"All interfaces need to start with 'I'. Check the InjectionSpecification is formated correctly without line breaks or similare in the node. Current interface name being read: '{0}'.",
interfaceName));
}
string interfaceNameNoI = interfaceName.Substring(1, interfaceName.Length - 1).RemoveDodgyTokens();
EmittedKernelSpec existingSpec =
RenderedKernels.Where(x => x.Value.ReturnType == interfaceName).Select(x => x.Value).
SingleOrDefault();
if (!injection.ShouldHaveConcreteCoreRender && existingSpec != null)
{
// We've already built this above...
continue;
}
// Render Kernel Reference which points to the concrete...
var spec2 = new EmittedKernelSpec
{
KernelClassName = string.Format("Kernel_{0}", interfaceNameNoI),
PrivateFieldType = interfaceName,
IsDebug = false,
Singleton = injection.Singleton
};
rw.WriteLine("[CoverageExclude]");
rw.WriteLine("{0} static class {1} {{",
_renderAccessModifier,
spec2.KernelClassName);
spec2.ReturnType = spec2.PrivateFieldType;
if (injection.Singleton)
{
spec2.PrivateFieldName = RenderPrivateField(rw, spec2, injection.Singleton);
rw.WriteLine(
"static {0}() {{ {1} = new Lazy<{2}>({3}.Get); }}",
spec2.KernelClassName,
spec2.PrivateFieldName,
spec2.ReturnType,
injection.ConcreteClassName);
rw.WriteLine(
"{0} static {1} Get() {{ return {2}.Value; }}",
_renderAccessModifier,
spec2.ReturnType,
spec2.PrivateFieldName);
rw.WriteLine(
"{0} static Lazy<{1}> GetLazy() {{ return {2}; }}",
_renderAccessModifier,
spec2.ReturnType,
spec2.PrivateFieldName);
RenderClearAndRebind(rw, spec2);
}
else
{
rw.WriteLine(
"{0} static {1} Get() {{ return {3}.Get(); }}",
_renderAccessModifier,
spec2.ReturnType,
spec2.PrivateFieldName,
injection.ConcreteClassName);
rw.WriteLine(
"{0} static Lazy<{1}> GetLazy() {{ return new Lazy<{1}>({2}.Get); }}",
_renderAccessModifier,
spec2.ReturnType,
injection.ConcreteClassName);
}
rw.WriteLine('}');
AddRenderedKernel(spec2, injection);
}
}
if (debugEmit)
{
rw.WriteLine("#endif");
}
}
private static void RenderNamespaces(StreamWriter rw)
{
var namespaces = new List <string>();
var debugNamespaces = new List <string>();
namespaces.Add("System");
namespaces.Add("System.Diagnostics");
namespaces.Add("System.Linq");
namespaces.Add("System.Reflection");
foreach (string kernelKey in RenderedKernels.Keys)
{
EmittedKernelSpec kernel = RenderedKernels[kernelKey];
foreach (string @namespace in kernel.Namespaces)
{
if (kernel.IsDebug)
{
debugNamespaces.Add(@namespace);
}
else
{
namespaces.Add(@namespace);
}
}
}
// Add explicit namespaces
if (_injectionSpecification.Namespaces != null)
{
foreach (InjectionSpecificationNamespace explicitNamespace in _injectionSpecification.Namespaces)
{
string condition = explicitNamespace.Condition;
bool valid = true;
if (!String.IsNullOrEmpty(condition))
{
bool invertCondition = false;
if (condition.StartsWith("!"))
{
invertCondition = true;
condition = condition.Substring(1, condition.Length - 1);
}
valid = _inputTokens.Contains(condition) != invertCondition;
}
if (valid)
{
if (explicitNamespace.DebugOnlySpecified && explicitNamespace.DebugOnly)
{
debugNamespaces.Add(explicitNamespace.Value);
}
else
{
namespaces.Add(explicitNamespace.Value);
}
}
}
}
// Filter and sort
namespaces = namespaces.Distinct().OrderBy(x => x).ToList();
debugNamespaces = debugNamespaces.Where(x => !namespaces.Contains(x)).Distinct().OrderBy(x => x).ToList();
if (debugNamespaces.Count > 0)
{
rw.WriteLine("#if DEBUG");
}
foreach (string @namespace in debugNamespaces)
{
rw.WriteLine("using {0};", @namespace);
}
if (debugNamespaces.Count > 0)
{
rw.WriteLine("#endif");
}
foreach (string @namespace in namespaces)
{
rw.WriteLine("using {0};", @namespace);
}
}
private static void RenderProviderGetter(StringWriter rw,
InjectionSpecificationInjection injection,
EmittedKernelSpec spec)
{
rw.WriteLine("{0} static {1} Get() {{", _renderAccessModifier, spec.ReturnType);
if (injection.Singleton)
{
rw.WriteLine("if({0} != null) return {0};", spec.PrivateFieldName);
}
rw.WriteLine("{0} = new {1}().Create();", spec.PrivateFieldName, injection.Provider);
rw.WriteLine("return {0};", spec.PrivateFieldName);
rw.WriteLine("}");
}
private static string RenderPrivateField(StringWriter rw, EmittedKernelSpec spec)
{
int indexOf = spec.KernelClassName.IndexOf('_');
string fieldName = spec.KernelClassName.Remove(0, indexOf);
rw.WriteLine("private static {0} {1};", spec.PrivateFieldType, fieldName);
return fieldName;
}
private static void RenderConcreteBuilderGetter(StringWriter rw,
InjectionSpecificationInjection injection,
EmittedKernelSpec spec)
{
if (!string.IsNullOrEmpty(injection.Provider))
{
throw new ParseException("Injection concrete '{0}' alse has provider '{1}' defined",
injection.Concrete,
injection.Provider);
}
string concreteToBuild = injection.Concrete;
CSharpFile fileDefinition = injection.NoScan
? new CSharpFile(concreteToBuild)
: FileScan(concreteToBuild, true);
rw.WriteLine("{0} static {1} Get() {{", _renderAccessModifier, spec.ReturnType);
if (injection.Singleton)
{
rw.WriteLine("if({0} != null) return {0};", spec.PrivateFieldName);
}
// There is no StackTrace on Metro :-(
if (!_inputTokens.Contains("NETFX_CORE"))
{
if (!spec.IsDebug)
{
rw.WriteLine("#if DEBUG");
}
rw.WriteLine("var stack = new StackTrace().GetFrames();");
rw.WriteLine("var methodName = stack.First().GetMethod().DeclaringType.Name;");
rw.WriteLine(
"if (stack.Count(y => y.GetMethod().DeclaringType.Name == methodName) > 1) { throw new Exception(\"Infinite loop detected\"); }");
if (!spec.IsDebug)
{
rw.WriteLine("#endif");
}
}
rw.WriteLine("var x = new {0}(", concreteToBuild);
if (injection.ConstructorArgument != null && injection.ConstructorArgument.Length > 0)
{
InjectionSpecificationInjectionConstructorArgument[] cArgs = injection.ConstructorArgument;
for (int i = 0; i < cArgs.Length; i++)
{
if (i != 0)
{
rw.Write(',');
}
rw.WriteLine(injection.ConstructorArgument[i].Value);
}
}
else
{
IList<string> cArgs = fileDefinition.ConstructorArgs ?? new List<string>();
for (int i = 0; i < cArgs.Count; i++)
{
if (i != 0)
{
rw.Write(',');
}
string interfaceRequired = cArgs[i];
string concreteFunction = GetConcreteYieldingFunction(interfaceRequired);
rw.WriteLine(concreteFunction);
}
}
rw.WriteLine(");");
rw.WriteLine("{0} = x;", spec.PrivateFieldName);
if (!injection.NoScan)
{
RenderPropertyInjections(rw, fileDefinition);
}
rw.WriteLine("return {0};", spec.PrivateFieldName);
rw.WriteLine("}");
}
private static void RenderClearAndRebind(StringWriter rw, EmittedKernelSpec spec)
{
// Annoyingly, I wanted to do these through reflection to ensure encapsulation, but silverlight has removed the
// ability to assign private fields, so I'm forced to make these public...
rw.WriteLine("{0} static void Clear() {{ {1} = null; }}", _renderAccessModifier, spec.PrivateFieldName);
rw.WriteLine("{0} static void Rebind({1} value) {{ {2} = value; }}",
_renderAccessModifier,
spec.PrivateFieldType,
spec.PrivateFieldName);
}
private static void Render(StringWriter rw, InjectionSpecificationInjection injection)
{
if (injection == null)
{
throw new ArgumentNullException("injection");
}
bool debugEmit = injection.DebugOnly;
if (debugEmit)
{
rw.WriteLine("#if DEBUG");
}
string outerKernelClassName = injection.ConcreteClassName;
var spec = new EmittedKernelSpec
{
KernelClassName = outerKernelClassName,
IsDebug = injection.DebugOnly
};
rw.WriteLine("[CoverageExclude]");
rw.WriteLine("{0} static class {1} {{", _renderAccessModifier, outerKernelClassName);
RenderStaticConstructorDebugLog(injection, debugEmit, rw);
if (!string.IsNullOrEmpty(injection.Provider))
{
if (string.IsNullOrEmpty(injection.Concrete))
{
if (injection.Interface.Count() != 1)
{
throw new Exception("Providers with no concrete and interfaces.Count != 1 not supported");
}
spec.PrivateFieldType = injection.Interface.First().Value;
spec.PrivateFieldName = RenderPrivateField(rw, spec);
}
else
{
spec.PrivateFieldType = injection.Concrete;
spec.PrivateFieldName = RenderPrivateField(rw, spec);
}
spec.ReturnType = injection.Interface != null && injection.Interface.Length == 1
? injection.Interface.First().Value
: injection.Concrete;
RenderProviderGetter(rw, injection, spec);
RenderClearAndRebind(rw, spec);
}
else if (!string.IsNullOrEmpty(injection.Concrete))
{
spec.PrivateFieldType = injection.Interface != null && injection.Interface.Length == 1
? injection.Interface.First().Value
: injection.Concrete;
spec.ReturnType = spec.PrivateFieldType;
spec.PrivateFieldName = RenderPrivateField(rw, spec);
RenderConcreteBuilderGetter(rw, injection, spec);
RenderClearAndRebind(rw, spec);
}
else
{
throw new ParseException("Injection defined with no Concrete or Provider?");
}
rw.WriteLine('}');
AddRenderedKernel(spec, injection);
// Render additional interfaces...
if (injection.Interface != null)
{
foreach (InjectionSpecificationInjectionInterface @interface in injection.Interface)
{
string interfaceName = @interface.Value;
if (!interfaceName.StartsWith("I"))
{
throw new ParseException(
string.Format(
"All interfaces need to start with 'I'. Check the InjectionSpecification is formated correctly without line breaks or similare in the node. Current interface name being read: '{0}'.",
interfaceName));
}
string interfaceNameNoI = interfaceName.Substring(1, interfaceName.Length - 1).RemoveDodgyTokens();
EmittedKernelSpec existingSpec =
RenderedKernels.Where(x => x.Value.ReturnType == interfaceName).Select(x => x.Value).
SingleOrDefault();
if (!injection.ShouldHaveConcreteCoreRender && existingSpec != null)
{
// We've already built this above...
continue;
}
// Render Kernel Reference which points to the concrete...
var spec2 = new EmittedKernelSpec
{
KernelClassName = string.Format("Kernel_{0}", interfaceNameNoI),
PrivateFieldType = interfaceName,
IsDebug = false
};
rw.WriteLine("[CoverageExclude]");
rw.WriteLine("{0} static class {1} {{",
_renderAccessModifier,
spec2.KernelClassName);
spec2.PrivateFieldName = RenderPrivateField(rw, spec2);
spec2.ReturnType = spec2.PrivateFieldType;
rw.WriteLine(
"{0} static {1} Get() {{ if({2} != null) {{ return {2}; }} var x = {3}.Get(); {2} = x; return x; }}",
_renderAccessModifier,
spec2.ReturnType,
spec2.PrivateFieldName,
injection.ConcreteClassName);
RenderClearAndRebind(rw, spec2);
rw.WriteLine('}');
AddRenderedKernel(spec2, injection);
}
}
if (debugEmit)
{
rw.WriteLine("#endif");
}
}
