internal override void Analyze(RuleAnalysis analysis, MemberInfo member, CodeExpression targetExpression, RulePathQualifier targetQualifier, CodeExpressionCollection argumentExpressions, ParameterInfo[] parameters, List <CodeExpression> attributedExpressions)
{
Stack <MemberInfo> methodStack = new Stack <MemberInfo>();
methodStack.Push(member);
AnalyzeInvokeAttribute(analysis, member.DeclaringType, methodStack, targetExpression, targetQualifier, argumentExpressions, parameters, attributedExpressions);
methodStack.Pop();
}
private void AnalyzeInvokeAttribute(RuleAnalysis analysis, Type contextType, Stack <MemberInfo> methodStack, CodeExpression targetExpression, RulePathQualifier targetQualifier, CodeExpressionCollection argumentExpressions, ParameterInfo[] parameters, List <CodeExpression> attributedExpressions)
{
// Go through all the methods and properties on the target context,
// looking for all the ones that match the name on the attribute.
MemberInfo[] members = contextType.GetMember(methodInvoked, MemberTypes.Method | MemberTypes.Property, BindingFlags.Instance | BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.FlattenHierarchy);
for (int m = 0; m < members.Length; ++m)
{
MemberInfo mi = members[m];
if (!methodStack.Contains(mi)) // Prevent recursion
{
methodStack.Push(mi);
object[] attrs = mi.GetCustomAttributes(typeof(RuleAttribute), true);
if (attrs != null && attrs.Length != 0)
{
RuleAttribute[] ruleAttrs = (RuleAttribute[])attrs;
for (int i = 0; i < ruleAttrs.Length; ++i)
{
RuleAttribute ruleAttr = ruleAttrs[i];
if (ruleAttr is RuleReadWriteAttribute readWriteAttr)
{
// Just analyze the read/write attribute normally.
readWriteAttr.Analyze(analysis, mi, targetExpression, targetQualifier, argumentExpressions, parameters, attributedExpressions);
}
else
{
RuleInvokeAttribute invokeAttr = (RuleInvokeAttribute)ruleAttr;
invokeAttr.AnalyzeInvokeAttribute(analysis, contextType, methodStack, targetExpression, targetQualifier, argumentExpressions, parameters, attributedExpressions);
}
}
}
methodStack.Pop();
}
}
}
internal abstract void Analyze(RuleAnalysis analysis, MemberInfo member, CodeExpression targetExpression, RulePathQualifier targetQualifier, CodeExpressionCollection argumentExpressions, ParameterInfo[] parameters, List <CodeExpression> attributedExpressions);
internal override void Analyze(RuleAnalysis analysis, MemberInfo member, CodeExpression targetExpression, RulePathQualifier targetQualifier, CodeExpressionCollection argumentExpressions, ParameterInfo[] parameters, List <CodeExpression> attributedExpressions)
{
// A RuleWrite attribute is only applicable if we're analyzing for writes.
if (!analysis.ForWrites)
{
return;
}
base.AnalyzeReadWrite(analysis, targetExpression, targetQualifier, argumentExpressions, parameters, attributedExpressions);
}
internal void AnalyzeReadWrite(RuleAnalysis analysis, CodeExpression targetExpression, RulePathQualifier targetQualifier, CodeExpressionCollection argumentExpressions, ParameterInfo[] parameters, List <CodeExpression> attributedExpressions)
{
if (string.IsNullOrEmpty(attributePath))
{
// If the suffix is null or empty, this means the RuleAttributeTarget has no dependencies.
if (attributeTarget == RuleAttributeTarget.This)
{
// The target object has no dependencies.
attributedExpressions.Add(targetExpression);
}
else if (attributeTarget == RuleAttributeTarget.Parameter)
{
// ALL arguments have no dependencies.
for (int i = 0; i < argumentExpressions.Count; ++i)
{
attributedExpressions.Add(argumentExpressions[i]);
}
}
}
else
{
string suffix = attributePath;
bool isRead = !analysis.ForWrites;
bool isWrite = analysis.ForWrites;
if (attributeTarget == RuleAttributeTarget.This)
{
// Target is "This", so perform the analysis on the target expression.
// Remove the optional "this/" token if present.
string optionalPrefix = "this/";
if (suffix.StartsWith(optionalPrefix, StringComparison.Ordinal))
{
suffix = suffix.Substring(optionalPrefix.Length);
}
RuleExpressionWalker.AnalyzeUsage(analysis, targetExpression, isRead, isWrite, new RulePathQualifier(suffix, targetQualifier));
attributedExpressions.Add(targetExpression);
}
else if (attributeTarget == RuleAttributeTarget.Parameter)
{
string paramName = null;
int firstSlash = suffix.IndexOf('/');
if (firstSlash >= 0)
{
paramName = suffix.Substring(0, firstSlash);
suffix = suffix.Substring(firstSlash + 1);
}
else
{
paramName = suffix;
suffix = null;
}
// Find the ParameterInfo that corresponds to this attribute path.
ParameterInfo param = Array.Find <ParameterInfo>(parameters,
delegate(ParameterInfo p) { return(p.Name == paramName); });
if (param != null)
{
RulePathQualifier qualifier = string.IsNullOrEmpty(suffix) ? null : new RulePathQualifier(suffix, null);
// 99.9% of the time, the parameter usage attribute only applies to one argument. However,
// if this attribute corresponds to the last parameter, then just assume that all the trailing
// arguments correspond. (In other words, if the caller passed more arguments then there
// are parameters, we assume it was a params array.)
//
// Usually this loop will only execute once.
int end = param.Position + 1;
if (param.Position == parameters.Length - 1)
{
end = argumentExpressions.Count;
}
for (int i = param.Position; i < end; ++i)
{
CodeExpression argExpr = argumentExpressions[i];
RuleExpressionWalker.AnalyzeUsage(analysis, argExpr, isRead, isWrite, qualifier);
attributedExpressions.Add(argExpr);
}
}
}
}
}
internal void AnalyzeRuleAttributes(MemberInfo member, CodeExpression targetExpr, RulePathQualifier targetQualifier, CodeExpressionCollection argExprs, ParameterInfo[] parameters, List <CodeExpression> attributedExprs)
{
object[] attrs = member.GetCustomAttributes(typeof(RuleAttribute), true);
if (attrs != null && attrs.Length > 0)
{
RuleAttribute[] ruleAttrs = (RuleAttribute[])attrs;
for (int i = 0; i < ruleAttrs.Length; ++i)
{
ruleAttrs[i].Analyze(this, member, targetExpr, targetQualifier, argExprs, parameters, attributedExprs);
}
}
}
public RulePathQualifier(string name, RulePathQualifier next)
{
this.name = name;
this.next = next;
}
internal override void AnalyzeUsage(CodeExpression expression, RuleAnalysis analysis, bool isRead, bool isWritten, RulePathQualifier qualifier)
{
ruleExpr.AnalyzeUsage(analysis, isRead, isWritten, qualifier);
}
public static void AnalyzeUsage(RuleAnalysis analysis, CodeExpression expression, bool isRead, bool isWritten, RulePathQualifier qualifier)
{
if (analysis == null)
{
throw new ArgumentNullException("analysis");
}
RuleExpressionInternal ruleExpr = GetExpression(expression);
ruleExpr.AnalyzeUsage(expression, analysis, isRead, isWritten, qualifier);
}
