JavaScriptCore-7601.1.46.3.tar.gz

[apple/javascriptcore.git] / bytecode / HandlerInfo.h

diff --git a/bytecode/HandlerInfo.h b/bytecode/HandlerInfo.h
index ec075e74a5f49d2c46b97b2f0045e76e48f54829..cae7ed9b4b09fcfe76cab6802daba60738ecdff7 100644 (file)
--- a/bytecode/HandlerInfo.h
+++ b/bytecode/HandlerInfo.h
@@ -30,12 +30,70 @@
 
 namespace JSC {
 
-struct HandlerInfo {
+enum class HandlerType {
+    Illegal = 0,
+    Catch = 1,
+    Finally = 2,
+    SynthesizedFinally = 3
+};
+
+struct HandlerInfoBase {
+    HandlerType type() const { return static_cast<HandlerType>(typeBits); }
+    void setType(HandlerType type) { typeBits = static_cast<uint32_t>(type); }
+
+    const char* typeName()
+    {
+        switch (type()) {
+        case HandlerType::Catch:
+            return "catch";
+        case HandlerType::Finally:
+            return "finally";
+        case HandlerType::SynthesizedFinally:
+            return "synthesized finally";
+        default:
+            ASSERT_NOT_REACHED();
+        }
+        return nullptr;
+    }
+
+    bool isCatchHandler() const { return type() == HandlerType::Catch; }
+
     uint32_t start;
     uint32_t end;
     uint32_t target;
-    uint32_t scopeDepth;
+    uint32_t scopeDepth : 30;
+    uint32_t typeBits : 2; // HandlerType
+};
+
+struct UnlinkedHandlerInfo : public HandlerInfoBase {
+    UnlinkedHandlerInfo(uint32_t start, uint32_t end, uint32_t target, uint32_t scopeDepth, HandlerType handlerType)
+    {
+        this->start = start;
+        this->end = end;
+        this->target = target;
+        this->scopeDepth = scopeDepth;
+        setType(handlerType);
+        ASSERT(type() == handlerType);
+    }
+};
+
+struct HandlerInfo : public HandlerInfoBase {
+    void initialize(const UnlinkedHandlerInfo& unlinkedInfo, size_t nonLocalScopeDepth)
+    {
+        start = unlinkedInfo.start;
+        end = unlinkedInfo.end;
+        target = unlinkedInfo.target;
+        scopeDepth = unlinkedInfo.scopeDepth + nonLocalScopeDepth;
+        typeBits = unlinkedInfo.typeBits;
+    }
+
 #if ENABLE(JIT)
+    void initialize(const UnlinkedHandlerInfo& unlinkedInfo, size_t nonLocalScopeDepth, CodeLocationLabel label)
+    {
+        initialize(unlinkedInfo, nonLocalScopeDepth);
+        nativeCode = label;
+    }
+
     CodeLocationLabel nativeCode;
 #endif
 };