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29 #include "Assertions.h"
30 #include "BlockStack.h"
33 #include <wtf/UnusedParam.h>
38 class HeapRootVisitor;
50 void enterScope(Frame&);
51 void leaveScope(Frame&);
55 void visit(HeapRootVisitor&);
60 HandleSlot findFirstAfter(HandleSlot);
65 BlockStack<JSValue> m_blockStack;
69 inline void HandleStack::enterScope(Frame& lastFrame)
80 inline void HandleStack::zapTo(Frame& lastFrame)
83 UNUSED_PARAM(lastFrame);
85 const Vector<HandleSlot>& blocks = m_blockStack.blocks();
87 if (lastFrame.m_end != m_frame.m_end) { // Zapping to a frame in a different block.
88 int i = blocks.size() - 1;
89 for ( ; blocks[i] + m_blockStack.blockLength != lastFrame.m_end; --i) {
90 for (int j = m_blockStack.blockLength - 1; j >= 0; --j)
91 blocks[i][j] = JSValue();
94 for (HandleSlot it = blocks[i] + m_blockStack.blockLength - 1; it != lastFrame.m_next - 1; --it)
100 for (HandleSlot it = m_frame.m_next - 1; it != lastFrame.m_next - 1; --it)
105 inline void HandleStack::leaveScope(Frame& lastFrame)
113 if (lastFrame.m_end != m_frame.m_end) // Popping to a frame in a different block.
114 m_blockStack.shrink(lastFrame.m_end);
119 inline HandleSlot HandleStack::push()
121 ASSERT(m_scopeDepth); // Creating a Local outside of a LocalScope is a memory leak.
122 if (m_frame.m_next == m_frame.m_end)
124 return m_frame.m_next++;