public static object EachObject(BlockParam block, RubyModule/*!*/ self, [NotNull]RubyClass/*!*/ theClass) {
Type classType = theClass.GetType();
bool isClass = (classType == typeof(RubyClass));
if (!isClass && classType != typeof(RubyModule)) {
throw new NotSupportedException("each_object only supported for objects of type Class or Module");
}
if (block == null) {
throw RubyExceptions.NoBlockGiven();
}
Dictionary<RubyModule, object> visited = new Dictionary<RubyModule, object>();
Stack<RubyModule> modules = new Stack<RubyModule>();
modules.Push(theClass.Context.ObjectClass);
while (modules.Count > 0) {
RubyModule next = modules.Pop();
RubyClass asClass = next as RubyClass;
if (!isClass || asClass != null) {
object result;
if (block.Yield(next, out result)) {
return result;
}
}
next.EnumerateConstants(delegate(RubyModule module, string name, object value) {
RubyModule constAsModule = (value as RubyModule);
if (constAsModule != null && !visited.ContainsKey(constAsModule)) {
modules.Push(constAsModule);
visited[module] = null;
}
return false;
});
}
return visited.Count;
}
public static object Synchronize(BlockParam criticalSection, RubyMutex/*!*/ self) {
lock (self._mutex) {
self._isLocked = true;
try {
object result;
criticalSection.Yield(out result);
return result;
} finally {
self._isLocked = false;
}
}
}
public static RubyArray Map(RubyContext/*!*/ context, BlockParam collector, object self) {
RubyArray result = new RubyArray();
Each(context, self, Proc.Create(context, delegate(BlockParam/*!*/ selfBlock, object item) {
if (collector != null) {
if (collector.Yield(item, out item)) {
return item;
}
}
result.Add(item);
return null;
}));
return result;
}
public static object Each(BlockParam block, IEnumerable/*!*/ self) {
foreach (object obj in self) {
object result;
if (block == null) {
throw RubyExceptions.NoBlockGiven();
}
if (block.Yield(obj, out result)) {
return result;
}
}
return self;
}
public static RubyArray Map(CallSiteStorage<EachSite>/*!*/ each, BlockParam collector, object self) {
RubyArray result = new RubyArray();
Each(each, self, Proc.Create(each.Context, delegate(BlockParam/*!*/ selfBlock, object _, object item) {
if (collector != null) {
if (collector.Yield(item, out item)) {
return item;
}
}
result.Add(item);
return null;
}));
return result;
}
public static object EachType(RubyContext/*!*/ context, BlockParam/*!*/ block, TypeGroup/*!*/ self) {
if (block == null) {
throw RubyExceptions.NoBlockGiven();
}
foreach (Type type in self.Types) {
RubyModule module = context.GetModule(type);
object result;
if (block.Yield(module, out result)) {
return result;
}
}
return self;
}
public static object Each(BlockParam block, RubyStruct/*!*/ self)
{
if (block == null && self.ItemCount > 0) {
throw RubyExceptions.NoBlockGiven();
}
foreach (var value in self.Values) {
object result;
if (block.Yield(value, out result)) {
return result;
}
}
return self;
}
public static object EachPair(BlockParam block, RubyStruct/*!*/ self)
{
if (block == null && self.ItemCount > 0) {
throw RubyExceptions.NoBlockGiven();
}
var context = self.ImmediateClass.Context;
foreach (KeyValuePair<string, object> entry in self.GetItems()) {
object result;
if (block.Yield(context.EncodeIdentifier(entry.Key), entry.Value, out result)) {
return result;
}
}
return self;
}
public static object Trap(
RubyContext/*!*/ context,
BlockParam block,
object self,
object signalId) {
if ((signalId is MutableString) && ((MutableString)signalId).ConvertToString() == "INT") {
context.InterruptSignalHandler = delegate() { object result; block.Yield(out result); };
} else {
// TODO: For now, just ignore unknown signals. This should be changed to throw an
// exception. We are not doing it yet as it is close to the V1 RTM, and throwing
// an exception might cause some app to misbehave whereas it might have happenned
// to work if no exception is thrown
}
return null;
}
public static object ChangeDirectory(BlockParam block, object/*!*/ self, MutableString dir) {
string strDir = dir.ConvertToString();
if (block == null) {
SetCurrentDirectory(strDir);
return 0;
} else {
string current = Directory.GetCurrentDirectory();
try {
SetCurrentDirectory(strDir);
object result;
block.Yield(dir, out result);
return result;
} finally {
SetCurrentDirectory(current);
}
}
}
private static object TrueForItems(CallSiteStorage<EachSite>/*!*/ each, BlockParam predicate, object self, bool expected) {
bool result = expected;
Each(each, self, Proc.Create(each.Context, delegate(BlockParam/*!*/ selfBlock, object _, object item) {
if (predicate != null) {
if (predicate.Yield(item, out item)) {
return item;
}
}
bool isTrue = Protocols.IsTrue(item);
if (isTrue != result) {
result = isTrue;
return selfBlock.Break(ScriptingRuntimeHelpers.BooleanToObject(isTrue));
}
return null;
}));
return ScriptingRuntimeHelpers.BooleanToObject(result);
}
public static object DeleteIf(RubyContext/*!*/ context, BlockParam block, object/*!*/ self) {
PlatformAdaptationLayer pal = context.DomainManager.Platform;
IDictionary variables = pal.GetEnvironmentVariables();
if (variables.Count > 0 && block == null) {
throw RubyExceptions.NoBlockGiven();
}
foreach (DictionaryEntry entry in variables) {
MutableString key = MutableString.Create(entry.Key.ToString()).Freeze();
MutableString value = MutableString.Create(entry.Value.ToString()).Freeze();
object result;
if (block.Yield(key, value, out result)) {
return result;
}
if (RubyOps.IsTrue(result)) {
SetVariable(context, self, key, null);
}
}
return self;
}
public static object EachObject(BlockParam block, RubyModule/*!*/ self, [NotNull]RubyClass/*!*/ theClass)
{
if (!theClass.HasAncestor(self.Context.ModuleClass)) {
throw RubyExceptions.CreateRuntimeError("each_object only supported for objects of type Class or Module");
}
if (block == null) {
throw RubyExceptions.NoBlockGiven();
}
int matches = 0;
List<RubyModule> visitedModules = new List<RubyModule>();
Stack<RubyModule> pendingModules = new Stack<RubyModule>();
pendingModules.Push(theClass.Context.ObjectClass);
while (pendingModules.Count > 0) {
RubyModule next = pendingModules.Pop();
visitedModules.Add(next);
if (theClass.Context.IsKindOf(next, theClass)) {
matches++;
object result;
if (block.Yield(next, out result)) {
return result;
}
}
using (theClass.Context.ClassHierarchyLocker()) {
next.EnumerateConstants(delegate(RubyModule module, string name, object value) {
RubyModule constAsModule = value as RubyModule;
if (constAsModule != null && !visitedModules.Contains(constAsModule)) {
pendingModules.Push(constAsModule);
}
return false;
});
}
}
return matches;
}
private static object TrueForItems(CallSiteStorage<EachSite>/*!*/ each, BlockParam predicate, object self, bool stop, bool positiveResult) {
object result = ScriptingRuntimeHelpers.BooleanToObject(!positiveResult);
Each(each, self, Proc.Create(each.Context, delegate(BlockParam/*!*/ selfBlock, object _, object item) {
if (predicate != null) {
object blockResult;
if (predicate.Yield(item, out blockResult)) {
result = blockResult;
return selfBlock.PropagateFlow(predicate, blockResult);
}
item = blockResult;
}
bool isTrue = Protocols.IsTrue(item);
if (isTrue == stop) {
result = ScriptingRuntimeHelpers.BooleanToObject(positiveResult);
return selfBlock.Break(result);
}
return null;
}));
return result;
}
public static object GetProfile(RubyContext/*!*/ context, BlockParam/*!*/ block, object self) {
if (!((RubyOptions)context.Options).Profile) {
throw RubyExceptions.CreateSystemCallError("You must enable profiling to use Clr.profile");
}
var start = Profiler.Instance.GetProfile();
object blockResult;
if (block.Yield(out blockResult)) {
return blockResult;
}
Hash result = new Hash(context);
foreach (var entry in Profiler.Instance.GetProfile()) {
long startTime;
if (!start.TryGetValue(entry.Key, out startTime)) {
startTime = 0;
}
long elapsed = entry.Value - startTime;
if (elapsed > 0) {
result[entry.Key] = Protocols.Normalize(Utils.DateTimeTicksFromStopwatch(elapsed));
}
}
return result;
}
public static RubyArray/*!*/ SortBy(
CallSiteStorage<EachSite>/*!*/ each,
BinaryOpStorage/*!*/ comparisonStorage,
BinaryOpStorage/*!*/ lessThanStorage,
BinaryOpStorage/*!*/ greaterThanStorage,
BlockParam keySelector, object self) {
// collect key, value pairs
List<KeyValuePair<object, object>> keyValuePairs = new List<KeyValuePair<object, object>>();
// Collect the key, value pairs
Each(each, self, Proc.Create(each.Context, delegate(BlockParam/*!*/ selfBlock, object _, object item) {
if (keySelector == null) {
throw RubyExceptions.NoBlockGiven();
}
object key;
if (keySelector.Yield(item, out key)) {
return key;
}
keyValuePairs.Add(new KeyValuePair<object, object>(key, item));
return null;
}));
// sort by keys
keyValuePairs.Sort(delegate(KeyValuePair<object, object> x, KeyValuePair<object, object> y) {
return Protocols.Compare(comparisonStorage, lessThanStorage, greaterThanStorage, x.Key, y.Key);
});
// return values
RubyArray result = new RubyArray(keyValuePairs.Count);
foreach (KeyValuePair<object, object> pair in keyValuePairs) {
result.Add(pair.Value);
}
return result;
}
public static RubyArray/*!*/ Partition(CallSiteStorage<EachSite>/*!*/ each, BlockParam predicate, object self) {
RubyArray trueSet = new RubyArray();
RubyArray falseSet = new RubyArray();
Each(each, self, Proc.Create(each.Context, delegate(BlockParam/*!*/ selfBlock, object _, object item) {
if (predicate == null) {
throw RubyExceptions.NoBlockGiven();
}
object blockResult;
if (predicate.Yield(item, out blockResult)) {
return blockResult;
}
if (Protocols.IsTrue(blockResult)) {
trueSet.Add(item);
} else {
falseSet.Add(item);
}
return null;
}));
RubyArray pair = new RubyArray(2);
pair.Add(trueSet);
pair.Add(falseSet);
return pair;
}
private static object GetExtreme(
CallSiteStorage<EachSite>/*!*/ each,
BinaryOpStorage/*!*/ compareStorage,
BinaryOpStorage/*!*/ lessThanStorage,
BinaryOpStorage/*!*/ greaterThanStorage,
BlockParam comparer, object self, int comparisonValue) {
bool firstItem = true;
object result = null;
Each(each, self, Proc.Create(each.Context, delegate(BlockParam/*!*/ selfBlock, object _, object item) {
// Check for first element
if (firstItem) {
result = item;
firstItem = false;
return null;
}
int compareResult;
if (comparer != null) {
object blockResult;
if (comparer.Yield(result, item, out blockResult)) {
return blockResult;
}
if (blockResult == null) {
throw RubyExceptions.MakeComparisonError(selfBlock.RubyContext, result, item);
}
compareResult = Protocols.ConvertCompareResult(lessThanStorage, greaterThanStorage, blockResult);
} else {
compareResult = Protocols.Compare(compareStorage, lessThanStorage, greaterThanStorage, result, item);
}
// Check if we have found the new minimum or maximum (-1 to select max, 1 to select min)
if (compareResult == comparisonValue) {
result = item;
}
return null;
}));
return result;
}
public static object Inject(CallSiteStorage<EachSite>/*!*/ each, BlockParam operation, object self, [Optional]object initial) {
object result = initial;
Each(each, self, Proc.Create(each.Context, delegate(BlockParam/*!*/ selfBlock, object _, object item) {
if (result == Missing.Value) {
result = item;
return null;
}
if (operation == null) {
throw RubyExceptions.NoBlockGiven();
}
if (operation.Yield(result, item, out result)) {
return result;
}
return null;
}));
return result != Missing.Value ? result : null;
}
public static RubyArray Grep(CallSiteStorage<EachSite>/*!*/ each, BinaryOpStorage/*!*/ caseEquals,
BlockParam action, object self, object pattern) {
RubyArray result = new RubyArray();
var site = caseEquals.GetCallSite("===");
Each(each, self, Proc.Create(each.Context, delegate(BlockParam/*!*/ selfBlock, object _, object item) {
if (RubyOps.IsTrue(site.Target(site, pattern, item))) {
if (action != null) {
if (action.Yield(item, out item)) {
return item;
}
}
result.Add(item);
}
return null;
}));
return result;
}
private static RubyArray/*!*/ Filter(CallSiteStorage<EachSite>/*!*/ each, BlockParam predicate, object self, bool acceptingValue) {
RubyArray result = new RubyArray();
Each(each, self, Proc.Create(each.Context, delegate(BlockParam/*!*/ selfBlock, object _, object item) {
if (predicate == null) {
throw RubyExceptions.NoBlockGiven();
}
object blockResult;
if (predicate.Yield(item, out blockResult)) {
return blockResult;
}
// Check if the result is what we expect (use true to select, false to reject)
if (Protocols.IsTrue(blockResult) == acceptingValue) {
result.Add(item);
}
return null;
}));
return result;
}
public static object InvokeOpenBlock(UnaryOpStorage/*!*/ closeStorage, BlockParam block, object obj) {
object result = obj;
if (!RubyOps.IsRetrySingleton(obj) && block != null) {
try {
block.Yield(obj, out result);
} finally {
try {
var site = closeStorage.GetCallSite("close");
site.Target(site, obj);
} catch (SystemException) {
// MRI: nop
}
}
}
return result;
}
internal static object TryInvokeOpenBlock(RubyContext/*!*/ context, BlockParam/*!*/ block, RubyIO/*!*/ io) {
if (block == null)
return io;
using (io) {
object result;
block.Yield(io, out result);
return result;
}
}
public static object EachByte(BlockParam block, RubyIO/*!*/ self) {
self.RequireReadable();
object aByte;
while ((aByte = Getc(self)) != null) {
if (block == null) {
throw RubyExceptions.NoBlockGiven();
}
object result;
if (block.Yield((int)aByte, out result)) {
return result;
}
}
return self;
}
// returns true if block jumped
// "result" will be null if there is no successful match
private static bool BlockReplaceFirst(RubyScope/*!*/ scope, MutableString/*!*/ input, BlockParam/*!*/ block,
RubyRegex/*!*/ pattern, out object blockResult, out MutableString result) {
var matchScope = scope.GetInnerMostClosureScope();
MatchData match = RegexpOps.Match(scope, pattern, input);
if (match == null || !match.Success) {
result = null;
blockResult = null;
matchScope.CurrentMatch = null;
return false;
}
// copy upfront so that no modifications to the input string are included in the result:
result = input.Clone();
matchScope.CurrentMatch = match;
if (block.Yield(MutableString.Create(match.Value), out blockResult)) {
return true;
}
// resets the $~ scope variable to the last match (skipd if block jumped):
matchScope.CurrentMatch = match;
MutableString replacement = Protocols.ConvertToString(scope.RubyContext, blockResult);
result.TaintBy(replacement);
// Note - we don't interpolate special sequences like \1 in block return value
result.Replace(match.Index, match.Length, replacement);
blockResult = null;
return false;
}
public static RubyArray/*!*/ Zip(CallSiteStorage<EachSite>/*!*/ each, ConversionStorage<IList>/*!*/ tryToA, BlockParam block,
object self, [NotNull]params object[] args) {
RubyArray results = (block == null) ? new RubyArray() : null;
// Call to_a on each argument
IList[] otherArrays = new IList[args.Length];
for (int i = 0; i < args.Length; i++) {
otherArrays[i] = Protocols.TryConvertToArray(tryToA, args[i]);
}
int index = 0;
Each(each, self, Proc.Create(each.Context, delegate(BlockParam/*!*/ selfBlock, object _, object item) {
// Collect items
RubyArray array = new RubyArray(otherArrays.Length + 1);
array.Add(item);
foreach (IList otherArray in otherArrays) {
if (index < otherArray.Count) {
array.Add(otherArray[index]);
} else {
array.Add(null);
}
}
index += 1;
if (block != null) {
object blockResult;
if (block.Yield(array, out blockResult)) {
return blockResult;
}
} else {
results.Add(array);
}
return null;
}));
return results;
}
// returns true if block jumped
// "result" will be null if there is no successful match
private static bool BlockReplaceAll(RubyScope/*!*/ scope, MutableString/*!*/ input, BlockParam/*!*/ block,
RubyRegex/*!*/ regex, out object blockResult, out MutableString result) {
var matchScope = scope.GetInnerMostClosureScope();
MatchCollection matches = regex.Matches(input);
if (matches.Count == 0) {
result = null;
blockResult = null;
matchScope.CurrentMatch = null;
return false;
}
// create an empty result:
result = input.CreateInstance().TaintBy(input);
int offset = 0;
foreach (Match match in matches) {
MatchData currentMatch = new MatchData(match, input);
matchScope.CurrentMatch = currentMatch;
uint version = input.Version;
if (block.Yield(MutableString.Create(match.Value), out blockResult)) {
return true;
}
if (input.Version != version) {
return false;
}
// resets the $~ scope variable to the last match (skipd if block jumped):
matchScope.CurrentMatch = currentMatch;
MutableString replacement = Protocols.ConvertToString(scope.RubyContext, blockResult);
result.TaintBy(replacement);
// prematch:
result.Append(input, offset, match.Index - offset);
// replacement (unlike ReplaceAll, don't interpolate special sequences like \1 in block return value):
result.Append(replacement);
offset = match.Index + match.Length;
}
// post-last-match:
result.Append(input, offset, input.Length - offset);
blockResult = null;
return false;
}
public static object EachWithIndex(CallSiteStorage<EachSite>/*!*/ each, BlockParam/*!*/ block, object self) {
// for some reason each_with_index always checks for a block, even if there's nothing to yield
if (block == null) {
throw RubyExceptions.NoBlockGiven();
}
int index = 0;
Each(each, self, Proc.Create(each.Context, delegate(BlockParam/*!*/ selfBlock, object _, object item) {
object blockResult;
if (block.Yield(item, index, out blockResult)) {
return blockResult;
}
index += 1;
return null;
}));
return self;
}
public static object Find(CallSiteStorage<EachSite>/*!*/ each, CallSiteStorage<Func<CallSite, object, object>>/*!*/ callStorage,
BlockParam predicate, object self, [Optional]object ifNone) {
object result = Missing.Value;
Each(each, self, Proc.Create(each.Context, delegate(BlockParam/*!*/ selfBlock, object _, object item) {
if (predicate == null) {
throw RubyExceptions.NoBlockGiven();
}
object blockResult;
if (predicate.Yield(item, out blockResult)) {
result = blockResult;
return selfBlock.Break(blockResult);
}
if (Protocols.IsTrue(blockResult)) {
result = item;
return selfBlock.Break(item);
}
return null;
}));
if (result == Missing.Value) {
if (ifNone == Missing.Value || ifNone == null) {
return null;
}
var site = callStorage.GetCallSite("call", 0);
result = site.Target(site, ifNone);
}
return result;
}
public static object Each(RubyContext/*!*/ context, BlockParam block, RubyIO/*!*/ self, [DefaultProtocol]MutableString separator, [DefaultProtocol]int limit) {
self.RequireReadable();
MutableString line;
while ((line = self.ReadLineOrParagraph(separator, limit)) != null) {
if (block == null) {
throw RubyExceptions.NoBlockGiven();
}
line.IsTainted = true;
context.InputProvider.LastInputLineNumber = ++self.LineNumber;
object result;
if (block.Yield(line, out result)) {
return result;
}
}
return self;
}