public boolean createInstruction(
ExpressRunner aCompile,
InstructionSet result,
Stack<ForRelBreakContinue> forStack,
ExpressNode node,
boolean isRoot)
throws Exception {
boolean returnVal = false;
ExpressNode[] children = node.getChildren();
int[] finishPoint = new int[children.length];
for (int i = 0; i < children.length; i++) {
ExpressNode tmpNode = children[i];
boolean tmpHas = aCompile.createInstructionSetPrivate(result, forStack, tmpNode, false);
returnVal = returnVal || tmpHas;
finishPoint[i] = result.getCurrentPoint();
}
if (node.isTypeEqualsOrChild("return")) {
result.addInstruction(new InstructionReturn(children.length > 0));
} else {
OperatorBase op = aCompile.getOperatorFactory().newInstance(node);
result.addInstruction(new InstructionOperator(op, children.length));
if (node.isTypeEqualsOrChild("&&") && aCompile.isShortCircuit()) {
result.insertInstruction(
finishPoint[0] + 1,
new InstructionGoToWithCondition(
false, result.getCurrentPoint() - finishPoint[0] + 1, false));
} else if (node.isTypeEqualsOrChild("||") && aCompile.isShortCircuit()) {
result.insertInstruction(
finishPoint[0] + 1,
new InstructionGoToWithCondition(
true, result.getCurrentPoint() - finishPoint[0] + 1, false));
} else if (node.isTypeEqualsOrChild("nor")) {
result.insertInstruction(
finishPoint[0] + 1,
new InstructionGoToWithNotNull(result.getCurrentPoint() - finishPoint[0] + 1, false));
} else if (node.isTypeEqualsOrChild("def") || node.isTypeEqualsOrChild("alias")) {
returnVal = true;
} else if (node.isTypeEqualsOrChild("exportDef")) {
// 添加对外的变量声明
result.addExportDef(new ExportItem(children[1].toString(), ExportItem.TYPE_DEF, "还没有实现"));
} else if (node.isTypeEqualsOrChild("exportAlias")) {
result.addExportDef(new ExportItem(children[0].toString(), ExportItem.TYPE_ALIAS, "还没有实现"));
}
}
return returnVal;
}
