--- /dev/null
+/*
+ * Copyright (C) 2013 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#import <objc/runtime.h>
+#import <wtf/HashSet.h>
+#import <wtf/Vector.h>
+
+inline bool protocolImplementsProtocol(Protocol *candidate, Protocol *target)
+{
+ unsigned protocolProtocolsCount;
+ Protocol ** protocolProtocols = protocol_copyProtocolList(candidate, &protocolProtocolsCount);
+ for (unsigned i = 0; i < protocolProtocolsCount; ++i) {
+ if (protocol_isEqual(protocolProtocols[i], target)) {
+ free(protocolProtocols);
+ return true;
+ }
+ }
+ free(protocolProtocols);
+ return false;
+}
+
+inline void forEachProtocolImplementingProtocol(Class cls, Protocol *target, void (^callback)(Protocol *))
+{
+ ASSERT(cls);
+ ASSERT(target);
+
+ Vector<Protocol *> worklist;
+ HashSet<void*> visited;
+
+ // Initially fill the worklist with the Class's protocols.
+ unsigned protocolsCount;
+ Protocol ** protocols = class_copyProtocolList(cls, &protocolsCount);
+ worklist.append(protocols, protocolsCount);
+ free(protocols);
+
+ while (!worklist.isEmpty()) {
+ Protocol *protocol = worklist.last();
+ worklist.removeLast();
+
+ // Are we encountering this Protocol for the first time?
+ if (!visited.add(protocol).isNewEntry)
+ continue;
+
+ // If it implements the protocol, make the callback.
+ if (protocolImplementsProtocol(protocol, target))
+ callback(protocol);
+
+ // Add incorporated protocols to the worklist.
+ protocols = protocol_copyProtocolList(protocol, &protocolsCount);
+ worklist.append(protocols, protocolsCount);
+ free(protocols);
+ }
+}
+
+inline void forEachMethodInClass(Class cls, void (^callback)(Method))
+{
+ unsigned count;
+ Method* methods = class_copyMethodList(cls, &count);
+ for (unsigned i = 0; i < count; ++i)
+ callback(methods[i]);
+ free(methods);
+}
+
+inline void forEachMethodInProtocol(Protocol *protocol, BOOL isRequiredMethod, BOOL isInstanceMethod, void (^callback)(SEL, const char*))
+{
+ unsigned count;
+ struct objc_method_description* methods = protocol_copyMethodDescriptionList(protocol, isRequiredMethod, isInstanceMethod, &count);
+ for (unsigned i = 0; i < count; ++i)
+ callback(methods[i].name, methods[i].types);
+ free(methods);
+}
+
+inline void forEachPropertyInProtocol(Protocol *protocol, void (^callback)(objc_property_t))
+{
+ unsigned count;
+ objc_property_t* properties = protocol_copyPropertyList(protocol, &count);
+ for (unsigned i = 0; i < count; ++i)
+ callback(properties[i]);
+ free(properties);
+}
+
+template<char open, char close>
+void skipPair(const char*& position)
+{
+ size_t count = 1;
+ do {
+ char c = *position++;
+ if (!c)
+ @throw [NSException exceptionWithName:NSInternalInconsistencyException reason:@"Malformed type encoding" userInfo:nil];
+ if (c == open)
+ ++count;
+ else if (c == close)
+ --count;
+ } while (count);
+}
+
+class StringRange {
+ WTF_MAKE_NONCOPYABLE(StringRange);
+public:
+ StringRange(const char* begin, const char* end) : m_ptr(strndup(begin, end - begin)) { }
+ ~StringRange() { free(m_ptr); }
+ operator const char*() const { return m_ptr; }
+ const char* get() const { return m_ptr; }
+
+private:
+ char* m_ptr;
+};
+
+class StructBuffer {
+ WTF_MAKE_NONCOPYABLE(StructBuffer);
+public:
+ StructBuffer(const char* encodedType)
+ {
+ NSUInteger size, alignment;
+ NSGetSizeAndAlignment(encodedType, &size, &alignment);
+ --alignment;
+ m_allocation = static_cast<char*>(malloc(size + alignment));
+ m_buffer = reinterpret_cast<char*>((reinterpret_cast<intptr_t>(m_allocation) + alignment) & ~alignment);
+ }
+
+ ~StructBuffer() { free(m_allocation); }
+ operator void*() const { return m_buffer; }
+
+private:
+ void* m_allocation;
+ void* m_buffer;
+};
+
+template<typename DelegateType>
+typename DelegateType::ResultType parseObjCType(const char*& position)
+{
+ ASSERT(*position);
+
+ switch (*position++) {
+ case 'c':
+ return DelegateType::template typeInteger<char>();
+ case 'i':
+ return DelegateType::template typeInteger<int>();
+ case 's':
+ return DelegateType::template typeInteger<short>();
+ case 'l':
+ return DelegateType::template typeInteger<long>();
+ case 'q':
+ return DelegateType::template typeDouble<unsigned long long>();
+ case 'C':
+ return DelegateType::template typeInteger<unsigned char>();
+ case 'I':
+ return DelegateType::template typeInteger<unsigned>();
+ case 'S':
+ return DelegateType::template typeInteger<unsigned short>();
+ case 'L':
+ return DelegateType::template typeInteger<unsigned long>();
+ case 'Q':
+ return DelegateType::template typeDouble<unsigned long long>();
+ case 'f':
+ return DelegateType::template typeDouble<float>();
+ case 'd':
+ return DelegateType::template typeDouble<double>();
+ case 'B':
+ return DelegateType::typeBool();
+ case 'v':
+ return DelegateType::typeVoid();
+
+ case '@': { // An object (whether statically typed or typed id)
+ if (position[0] == '?' && position[1] == '<') {
+ position += 2;
+ const char* begin = position;
+ skipPair<'<','>'>(position);
+ return DelegateType::typeBlock(begin, position - 1);
+ }
+
+ if (*position == '"') {
+ const char* begin = ++position;
+ position = index(position, '"');
+ return DelegateType::typeOfClass(begin, position++);
+ }
+
+ return DelegateType::typeId();
+ }
+
+ case '{': { // {name=type...} A structure
+ const char* begin = position - 1;
+ skipPair<'{','}'>(position);
+ return DelegateType::typeStruct(begin, position);
+ }
+
+ // NOT supporting C strings, arrays, pointers, unions, bitfields, function pointers.
+ case '*': // A character string (char *)
+ case '[': // [array type] An array
+ case '(': // (name=type...) A union
+ case 'b': // bnum A bit field of num bits
+ case '^': // ^type A pointer to type
+ case '?': // An unknown type (among other things, this code is used for function pointers)
+ // NOT supporting Objective-C Class, SEL
+ case '#': // A class object (Class)
+ case ':': // A method selector (SEL)
+ default:
+ return nil;
+ }
+}
+
+extern "C" {
+ // Forward declare some Objective-C runtime internal methods that are not API.
+ const char *_protocol_getMethodTypeEncoding(Protocol *, SEL, BOOL isRequiredMethod, BOOL isInstanceMethod);
+ id objc_initWeak(id *, id);
+ void objc_destroyWeak(id *);
+ bool _Block_has_signature(void *);
+ const char * _Block_signature(void *);
+}
projects / apple / javascriptcore.git / blobdiff