зеркало из https://github.com/mozilla/pjs.git
Cleanup of call code generation: now it is split into separated functions for optimized/standard function calls.
This commit is contained in:
igor%mir2.org
Родитель
3811cf183e
Коммит
dc693719f5
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@ -2255,252 +2255,15 @@ class BodyCodegen
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private void visitCall(Node node, int type, Node child)
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{
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Node firstArgChild = child.getNext();
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OptFunctionNode
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target = (OptFunctionNode)node.getProp(Node.DIRECTCALL_PROP);
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if (target == null && type == Token.CALL) {
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int childType = child.getType();
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if (firstArgChild == null) {
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if (childType == Token.NAME) {
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String name = child.getString();
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cfw.addPush(name);
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cfw.addALoad(contextLocal);
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cfw.addALoad(variableObjectLocal);
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addOptRuntimeInvoke(
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"callName0",
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"(Ljava/lang/String;"
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+"Lorg/mozilla/javascript/Context;"
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+"Lorg/mozilla/javascript/Scriptable;"
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+")Ljava/lang/Object;");
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} else if (childType == Token.GETPROP) {
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// x.name() call
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Node propTarget = child.getFirstChild();
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generateExpression(propTarget, node);
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Node id = propTarget.getNext();
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String property = id.getString();
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cfw.addPush(property);
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cfw.addALoad(contextLocal);
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cfw.addALoad(variableObjectLocal);
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addOptRuntimeInvoke(
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"callProp0",
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"(Ljava/lang/Object;"
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+"Ljava/lang/String;"
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+"Lorg/mozilla/javascript/Context;"
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+"Lorg/mozilla/javascript/Scriptable;"
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+")Ljava/lang/Object;");
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} else {
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generateFunctionAndThisObj(child, node);
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cfw.addALoad(contextLocal);
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cfw.addALoad(variableObjectLocal);
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addOptRuntimeInvoke(
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"call0",
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"(Lorg/mozilla/javascript/Function;"
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+"Lorg/mozilla/javascript/Scriptable;"
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+"Lorg/mozilla/javascript/Context;"
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+"Lorg/mozilla/javascript/Scriptable;"
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+")Ljava/lang/Object;");
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}
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return;
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}
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if (childType == Token.NAME) {
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// XXX: this optimization is only possible if name
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// resolution
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// is not affected by arguments evaluation and currently
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// there are no checks for it
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String name = child.getString();
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generateCallArgArray(node, firstArgChild, false);
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cfw.addPush(name);
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cfw.addALoad(contextLocal);
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cfw.addALoad(variableObjectLocal);
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addOptRuntimeInvoke(
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"callName",
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"([Ljava/lang/Object;"
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+"Ljava/lang/String;"
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+"Lorg/mozilla/javascript/Context;"
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+"Lorg/mozilla/javascript/Scriptable;"
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+")Ljava/lang/Object;");
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return;
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}
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if (firstArgChild.getNext() == null) {
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// ...(something) call
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generateFunctionAndThisObj(child, node);
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// stack: ... functionObj thisObj
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generateExpression(firstArgChild, node);
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// stack: ... functionObj thisObj arg0
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cfw.addALoad(contextLocal);
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cfw.addALoad(variableObjectLocal);
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addOptRuntimeInvoke(
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"call1",
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"(Lorg/mozilla/javascript/Function;"
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+"Lorg/mozilla/javascript/Scriptable;"
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+"Ljava/lang/Object;"
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+"Lorg/mozilla/javascript/Context;"
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+"Lorg/mozilla/javascript/Scriptable;"
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+")Ljava/lang/Object;");
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return;
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}
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}
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if (type == Token.NEW) {
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generateExpression(child, node);
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// stack: ... functionObj
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} else {
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generateFunctionAndThisObj(child, node);
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// stack: ... functionObj thisObj
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}
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int beyond = 0;
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if (target == null) {
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if (type == Token.NEW) {
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cfw.addALoad(contextLocal);
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cfw.addALoad(variableObjectLocal);
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// stack: ... functionObj cx scope
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} else {
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cfw.addALoad(contextLocal);
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cfw.add(ByteCode.SWAP);
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cfw.addALoad(variableObjectLocal);
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cfw.add(ByteCode.SWAP);
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// stack: ... functionObj cx scope thisObj
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}
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generateCallArgArray(node, firstArgChild, false);
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} else {
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beyond = cfw.acquireLabel();
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short thisObjLocal = 0;
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if (type != Token.NEW) {
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thisObjLocal = getNewWordLocal();
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cfw.addAStore(thisObjLocal);
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}
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// stack: ... functionObj
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int directTargetIndex = target.getDirectTargetIndex();
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if (isTopLevel) {
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cfw.add(ByteCode.ALOAD_0);
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} else {
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cfw.add(ByteCode.ALOAD_0);
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cfw.add(ByteCode.GETFIELD, codegen.mainClassName,
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Codegen.DIRECT_CALL_PARENT_FIELD,
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codegen.mainClassSignature);
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}
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cfw.add(ByteCode.GETFIELD, codegen.mainClassName,
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Codegen.getDirectTargetFieldName(directTargetIndex),
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codegen.mainClassSignature);
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cfw.add(ByteCode.DUP2);
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// stack: ... functionObj directFunct functionObj directFunct
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int regularCall = cfw.acquireLabel();
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cfw.add(ByteCode.IF_ACMPNE, regularCall);
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// stack: ... functionObj directFunct
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short stackHeight = cfw.getStackTop();
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cfw.add(ByteCode.SWAP);
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cfw.add(ByteCode.POP);
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// stack: ... directFunct
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if (compilerEnv.isUseDynamicScope()) {
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cfw.addALoad(contextLocal);
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cfw.addALoad(variableObjectLocal);
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} else {
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cfw.add(ByteCode.DUP);
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// stack: ... directFunct directFunct
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cfw.addInvoke(ByteCode.INVOKEINTERFACE,
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"org/mozilla/javascript/Scriptable",
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"getParentScope",
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"()Lorg/mozilla/javascript/Scriptable;");
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// stack: ... directFunct scope
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cfw.addALoad(contextLocal);
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// stack: ... directFunct scope cx
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cfw.add(ByteCode.SWAP);
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}
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// stack: ... directFunc cx scope
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if (type == Token.NEW) {
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cfw.add(ByteCode.ACONST_NULL);
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} else {
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cfw.addALoad(thisObjLocal);
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}
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// stack: ... directFunc cx scope thisObj
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/*
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Remember that directCall parameters are paired in 1 aReg and 1 dReg
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If the argument is an incoming arg, just pass the orginal pair thru.
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Else, if the argument is known to be typed 'Number', pass Void.TYPE
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in the aReg and the number is the dReg
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Else pass the JS object in the aReg and 0.0 in the dReg.
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*/
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Node argChild = firstArgChild;
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while (argChild != null) {
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int dcp_register = nodeIsDirectCallParameter(argChild);
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if (dcp_register >= 0) {
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cfw.addALoad(dcp_register);
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cfw.addDLoad(dcp_register + 1);
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} else if (argChild.getIntProp(Node.ISNUMBER_PROP, -1)
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== Node.BOTH)
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{
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cfw.add(ByteCode.GETSTATIC,
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"java/lang/Void",
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"TYPE",
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"Ljava/lang/Class;");
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generateExpression(argChild, node);
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} else {
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generateExpression(argChild, node);
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cfw.addPush(0.0);
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}
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argChild = argChild.getNext();
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}
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cfw.add(ByteCode.GETSTATIC,
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"org/mozilla/javascript/ScriptRuntime",
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"emptyArgs", "[Ljava/lang/Object;");
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cfw.addInvoke(ByteCode.INVOKESTATIC,
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codegen.mainClassName,
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(type == Token.NEW)
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? codegen.getDirectCtorName(target.fnode)
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: codegen.getBodyMethodName(target.fnode),
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codegen.getBodyMethodSignature(target.fnode));
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cfw.add(ByteCode.GOTO, beyond);
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cfw.markLabel(regularCall, stackHeight);
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// stack: ... functionObj directFunct
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cfw.add(ByteCode.POP);
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cfw.addALoad(contextLocal);
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cfw.addALoad(variableObjectLocal);
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// stack: ... functionObj cx scope
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if (type != Token.NEW) {
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cfw.addALoad(thisObjLocal);
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releaseWordLocal(thisObjLocal);
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// stack: ... functionObj cx scope thisObj
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}
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// XXX: this will generate code for the child array the second time,
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// so the code better not to alter tree structure...
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generateCallArgArray(node, firstArgChild, true);
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}
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if (type == Token.NEW) {
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addScriptRuntimeInvoke(
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"newObject",
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"(Ljava/lang/Object;"
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+"Lorg/mozilla/javascript/Context;"
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+"Lorg/mozilla/javascript/Scriptable;"
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+"[Ljava/lang/Object;"
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+")Lorg/mozilla/javascript/Scriptable;");
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} else {
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cfw.addInvoke(ByteCode.INVOKEINTERFACE,
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"org/mozilla/javascript/Function",
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"call",
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"(Lorg/mozilla/javascript/Context;"
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+"Lorg/mozilla/javascript/Scriptable;"
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+"Lorg/mozilla/javascript/Scriptable;"
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+"[Ljava/lang/Object;"
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+")Ljava/lang/Object;");
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}
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if (target != null) {
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cfw.markLabel(beyond);
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visitOptimizedCall(node, target, type, child);
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} else if (type == Token.CALL) {
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visitStandardCall(node, child);
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} else {
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visitStandardNew(node, child);
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}
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}
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@ -2574,6 +2337,269 @@ class BodyCodegen
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+")Ljava/lang/Object;");
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}
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private void visitStandardCall(Node node, Node child)
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{
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if (node.getType() != Token.CALL) throw Codegen.badTree();
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Node firstArgChild = child.getNext();
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int childType = child.getType();
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String methodName;
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String signature;
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if (firstArgChild == null) {
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if (childType == Token.NAME) {
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// name() call
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String name = child.getString();
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cfw.addPush(name);
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methodName = "callName0";
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signature = "(Ljava/lang/String;"
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+"Lorg/mozilla/javascript/Context;"
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+"Lorg/mozilla/javascript/Scriptable;"
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+")Ljava/lang/Object;";
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} else if (childType == Token.GETPROP) {
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// x.name() call
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Node propTarget = child.getFirstChild();
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generateExpression(propTarget, node);
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Node id = propTarget.getNext();
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String property = id.getString();
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cfw.addPush(property);
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methodName = "callProp0";
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signature = "(Ljava/lang/Object;"
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+"Ljava/lang/String;"
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+"Lorg/mozilla/javascript/Context;"
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+"Lorg/mozilla/javascript/Scriptable;"
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+")Ljava/lang/Object;";
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} else {
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generateFunctionAndThisObj(child, node);
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methodName = "call0";
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signature = "(Lorg/mozilla/javascript/Function;"
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+"Lorg/mozilla/javascript/Scriptable;"
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+"Lorg/mozilla/javascript/Context;"
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+"Lorg/mozilla/javascript/Scriptable;"
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+")Ljava/lang/Object;";
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}
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} else if (childType == Token.NAME) {
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// XXX: this optimization is only possible if name
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// resolution
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// is not affected by arguments evaluation and currently
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// there are no checks for it
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String name = child.getString();
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generateCallArgArray(node, firstArgChild, false);
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cfw.addPush(name);
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methodName = "callName";
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signature = "([Ljava/lang/Object;"
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+"Ljava/lang/String;"
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+"Lorg/mozilla/javascript/Context;"
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+"Lorg/mozilla/javascript/Scriptable;"
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+")Ljava/lang/Object;";
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} else {
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int argCount = 0;
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for (Node arg = firstArgChild; arg != null; arg = arg.getNext()) {
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++argCount;
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}
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generateFunctionAndThisObj(child, node);
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// stack: ... functionObj thisObj
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if (argCount == 1) {
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generateExpression(firstArgChild, node);
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methodName = "call1";
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signature = "(Lorg/mozilla/javascript/Function;"
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+"Lorg/mozilla/javascript/Scriptable;"
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+"Ljava/lang/Object;"
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+"Lorg/mozilla/javascript/Context;"
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+"Lorg/mozilla/javascript/Scriptable;"
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+")Ljava/lang/Object;";
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} else if (argCount == 2) {
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generateExpression(firstArgChild, node);
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generateExpression(firstArgChild.getNext(), node);
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methodName = "call2";
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signature = "(Lorg/mozilla/javascript/Function;"
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+"Lorg/mozilla/javascript/Scriptable;"
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+"Ljava/lang/Object;"
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+"Ljava/lang/Object;"
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+"Lorg/mozilla/javascript/Context;"
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+"Lorg/mozilla/javascript/Scriptable;"
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+")Ljava/lang/Object;";
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} else {
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generateCallArgArray(node, firstArgChild, false);
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methodName = "callN";
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signature = "(Lorg/mozilla/javascript/Function;"
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+"Lorg/mozilla/javascript/Scriptable;"
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+"[Ljava/lang/Object;"
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+"Lorg/mozilla/javascript/Context;"
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+"Lorg/mozilla/javascript/Scriptable;"
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+")Ljava/lang/Object;";
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}
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}
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cfw.addALoad(contextLocal);
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cfw.addALoad(variableObjectLocal);
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addOptRuntimeInvoke(methodName, signature);
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}
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private void visitStandardNew(Node node, Node child)
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{
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if (node.getType() != Token.NEW) throw Codegen.badTree();
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Node firstArgChild = child.getNext();
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generateExpression(child, node);
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// stack: ... functionObj
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cfw.addALoad(contextLocal);
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cfw.addALoad(variableObjectLocal);
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// stack: ... functionObj cx scope
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generateCallArgArray(node, firstArgChild, false);
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addScriptRuntimeInvoke(
|
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"newObject",
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"(Ljava/lang/Object;"
|
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+"Lorg/mozilla/javascript/Context;"
|
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+"Lorg/mozilla/javascript/Scriptable;"
|
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+"[Ljava/lang/Object;"
|
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+")Lorg/mozilla/javascript/Scriptable;");
|
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}
|
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|
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private void visitOptimizedCall(Node node, OptFunctionNode target,
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int type, Node child)
|
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{
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Node firstArgChild = child.getNext();
|
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|
||||
short thisObjLocal = 0;
|
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if (type == Token.NEW) {
|
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generateExpression(child, node);
|
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} else {
|
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generateFunctionAndThisObj(child, node);
|
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thisObjLocal = getNewWordLocal();
|
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cfw.addAStore(thisObjLocal);
|
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}
|
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// stack: ... functionObj
|
||||
|
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int beyond = cfw.acquireLabel();
|
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|
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int directTargetIndex = target.getDirectTargetIndex();
|
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if (isTopLevel) {
|
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cfw.add(ByteCode.ALOAD_0);
|
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} else {
|
||||
cfw.add(ByteCode.ALOAD_0);
|
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cfw.add(ByteCode.GETFIELD, codegen.mainClassName,
|
||||
Codegen.DIRECT_CALL_PARENT_FIELD,
|
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codegen.mainClassSignature);
|
||||
}
|
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cfw.add(ByteCode.GETFIELD, codegen.mainClassName,
|
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Codegen.getDirectTargetFieldName(directTargetIndex),
|
||||
codegen.mainClassSignature);
|
||||
|
||||
cfw.add(ByteCode.DUP2);
|
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// stack: ... functionObj directFunct functionObj directFunct
|
||||
|
||||
int regularCall = cfw.acquireLabel();
|
||||
cfw.add(ByteCode.IF_ACMPNE, regularCall);
|
||||
|
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// stack: ... functionObj directFunct
|
||||
short stackHeight = cfw.getStackTop();
|
||||
cfw.add(ByteCode.SWAP);
|
||||
cfw.add(ByteCode.POP);
|
||||
// stack: ... directFunct
|
||||
if (compilerEnv.isUseDynamicScope()) {
|
||||
cfw.addALoad(contextLocal);
|
||||
cfw.addALoad(variableObjectLocal);
|
||||
} else {
|
||||
cfw.add(ByteCode.DUP);
|
||||
// stack: ... directFunct directFunct
|
||||
cfw.addInvoke(ByteCode.INVOKEINTERFACE,
|
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"org/mozilla/javascript/Scriptable",
|
||||
"getParentScope",
|
||||
"()Lorg/mozilla/javascript/Scriptable;");
|
||||
// stack: ... directFunct scope
|
||||
cfw.addALoad(contextLocal);
|
||||
// stack: ... directFunct scope cx
|
||||
cfw.add(ByteCode.SWAP);
|
||||
}
|
||||
// stack: ... directFunc cx scope
|
||||
|
||||
if (type == Token.NEW) {
|
||||
cfw.add(ByteCode.ACONST_NULL);
|
||||
} else {
|
||||
cfw.addALoad(thisObjLocal);
|
||||
}
|
||||
// stack: ... directFunc cx scope thisObj
|
||||
/*
|
||||
Remember that directCall parameters are paired in 1 aReg and 1 dReg
|
||||
If the argument is an incoming arg, just pass the orginal pair thru.
|
||||
Else, if the argument is known to be typed 'Number', pass Void.TYPE
|
||||
in the aReg and the number is the dReg
|
||||
Else pass the JS object in the aReg and 0.0 in the dReg.
|
||||
*/
|
||||
Node argChild = firstArgChild;
|
||||
while (argChild != null) {
|
||||
int dcp_register = nodeIsDirectCallParameter(argChild);
|
||||
if (dcp_register >= 0) {
|
||||
cfw.addALoad(dcp_register);
|
||||
cfw.addDLoad(dcp_register + 1);
|
||||
} else if (argChild.getIntProp(Node.ISNUMBER_PROP, -1)
|
||||
== Node.BOTH)
|
||||
{
|
||||
cfw.add(ByteCode.GETSTATIC,
|
||||
"java/lang/Void",
|
||||
"TYPE",
|
||||
"Ljava/lang/Class;");
|
||||
generateExpression(argChild, node);
|
||||
} else {
|
||||
generateExpression(argChild, node);
|
||||
cfw.addPush(0.0);
|
||||
}
|
||||
argChild = argChild.getNext();
|
||||
}
|
||||
|
||||
cfw.add(ByteCode.GETSTATIC,
|
||||
"org/mozilla/javascript/ScriptRuntime",
|
||||
"emptyArgs", "[Ljava/lang/Object;");
|
||||
cfw.addInvoke(ByteCode.INVOKESTATIC,
|
||||
codegen.mainClassName,
|
||||
(type == Token.NEW)
|
||||
? codegen.getDirectCtorName(target.fnode)
|
||||
: codegen.getBodyMethodName(target.fnode),
|
||||
codegen.getBodyMethodSignature(target.fnode));
|
||||
|
||||
cfw.add(ByteCode.GOTO, beyond);
|
||||
|
||||
cfw.markLabel(regularCall, stackHeight);
|
||||
// stack: ... functionObj directFunct
|
||||
cfw.add(ByteCode.POP);
|
||||
cfw.addALoad(contextLocal);
|
||||
cfw.addALoad(variableObjectLocal);
|
||||
// stack: ... functionObj cx scope
|
||||
if (type != Token.NEW) {
|
||||
cfw.addALoad(thisObjLocal);
|
||||
releaseWordLocal(thisObjLocal);
|
||||
// stack: ... functionObj cx scope thisObj
|
||||
}
|
||||
// XXX: this will generate code for the child array the second time,
|
||||
// so expression code generation better not to alter tree structure...
|
||||
generateCallArgArray(node, firstArgChild, true);
|
||||
|
||||
if (type == Token.NEW) {
|
||||
addScriptRuntimeInvoke(
|
||||
"newObject",
|
||||
"(Ljava/lang/Object;"
|
||||
+"Lorg/mozilla/javascript/Context;"
|
||||
+"Lorg/mozilla/javascript/Scriptable;"
|
||||
+"[Ljava/lang/Object;"
|
||||
+")Lorg/mozilla/javascript/Scriptable;");
|
||||
} else {
|
||||
cfw.addInvoke(ByteCode.INVOKEINTERFACE,
|
||||
"org/mozilla/javascript/Function",
|
||||
"call",
|
||||
"(Lorg/mozilla/javascript/Context;"
|
||||
+"Lorg/mozilla/javascript/Scriptable;"
|
||||
+"Lorg/mozilla/javascript/Scriptable;"
|
||||
+"[Ljava/lang/Object;"
|
||||
+")Ljava/lang/Object;");
|
||||
}
|
||||
|
||||
cfw.markLabel(beyond);
|
||||
}
|
||||
|
||||
private void generateCallArgArray(Node node, Node argChild, boolean directCall)
|
||||
{
|
||||
int argCount = 0;
|
||||
|
|
|
|||
|
|
@ -92,7 +92,7 @@ public final class OptRuntime extends ScriptRuntime
|
|||
}
|
||||
|
||||
/**
|
||||
* Implement ....() call. This is mostly to shrink optimizer code
|
||||
* Implement ....() call shrinking optimizer code.
|
||||
*/
|
||||
public static Object call0(Function fun, Scriptable thisObj,
|
||||
Context cx, Scriptable scope)
|
||||
|
|
@ -101,17 +101,35 @@ public final class OptRuntime extends ScriptRuntime
|
|||
}
|
||||
|
||||
/**
|
||||
* Implement ....(arg) call. This is mostly to shrink optimizer code
|
||||
* Implement ....(arg) call shrinking optimizer code.
|
||||
*/
|
||||
public static Object call1(Function fun, Scriptable thisObj, Object arg0, Context cx, Scriptable scope)
|
||||
{
|
||||
Object[] args = new Object[1];
|
||||
args[0] = arg0;
|
||||
return fun.call(cx, scope, thisObj, new Object[] { arg0 } );
|
||||
}
|
||||
|
||||
/**
|
||||
* Implement ....(arg0, arg1) call shrinking optimizer code.
|
||||
*/
|
||||
public static Object call2(Function fun, Scriptable thisObj,
|
||||
Object arg0, Object arg1,
|
||||
Context cx, Scriptable scope)
|
||||
{
|
||||
return fun.call(cx, scope, thisObj, new Object[] { arg0, arg1 });
|
||||
}
|
||||
|
||||
/**
|
||||
* Implement ....(arg0, arg1, ...) call shrinking optimizer code.
|
||||
*/
|
||||
public static Object callN(Function fun, Scriptable thisObj,
|
||||
Object[] args,
|
||||
Context cx, Scriptable scope)
|
||||
{
|
||||
return fun.call(cx, scope, thisObj, args);
|
||||
}
|
||||
|
||||
/**
|
||||
* Implement name(args) call. This is mostly to shrink optimizer code
|
||||
* Implement name(args) call shrinking optimizer code.
|
||||
*/
|
||||
public static Object callName(Object[] args, String name,
|
||||
Context cx, Scriptable scope)
|
||||
|
|
@ -122,7 +140,7 @@ public final class OptRuntime extends ScriptRuntime
|
|||
}
|
||||
|
||||
/**
|
||||
* Implement name() call. This is mostly to shrink optimizer code
|
||||
* Implement name() call shrinking optimizer code.
|
||||
*/
|
||||
public static Object callName0(String name,
|
||||
Context cx, Scriptable scope)
|
||||
|
|
@ -133,7 +151,7 @@ public final class OptRuntime extends ScriptRuntime
|
|||
}
|
||||
|
||||
/**
|
||||
* Implement x.property() call. This is mostly to shrink optimizer code
|
||||
* Implement x.property() call shrinking optimizer code.
|
||||
*/
|
||||
public static Object callProp0(Object value, String property,
|
||||
Context cx, Scriptable scope)
|
||||
|
|
|
|||
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