@Override
public void GlobalVariable(GlobalVariable variable) {
encoder.encode(variable.getName());
}
private boolean computeScopeFlags(boolean receivesClosureArg, List<Instr> instrs) {
for (Instr i : instrs) {
Operation op = i.getOperation();
if (op == Operation.RECV_CLOSURE) {
receivesClosureArg = true;
} else if (op == Operation.ZSUPER) {
this.canCaptureCallersBinding = true;
this.usesZSuper = true;
} else if (i instanceof CallBase) {
CallBase call = (CallBase) i;
if (call.targetRequiresCallersBinding()) this.bindingHasEscaped = true;
if (call.canBeEval()) {
this.usesEval = true;
// If this method receives a closure arg, and this call is an eval that has more than 1
// argument,
// it could be using the closure as a binding -- which means it could be using pretty much
// any
// variable from the caller's binding!
if (receivesClosureArg && (call.getCallArgs().length > 1)) {
this.canCaptureCallersBinding = true;
}
}
} else if (op == Operation.GET_GLOBAL_VAR) {
GlobalVariable gv = (GlobalVariable) ((GetGlobalVariableInstr) i).getSource();
String gvName = gv.getName();
if (gvName.equals("$_")
|| gvName.equals("$~")
|| gvName.equals("$`")
|| gvName.equals("$'")
|| gvName.equals("$+")
|| gvName.equals("$LAST_READ_LINE")
|| gvName.equals("$LAST_MATCH_INFO")
|| gvName.equals("$PREMATCH")
|| gvName.equals("$POSTMATCH")
|| gvName.equals("$LAST_PAREN_MATCH")) {
this.usesBackrefOrLastline = true;
}
} else if (op == Operation.PUT_GLOBAL_VAR) {
GlobalVariable gv = (GlobalVariable) ((PutGlobalVarInstr) i).getTarget();
String gvName = gv.getName();
if (gvName.equals("$_") || gvName.equals("$~")) usesBackrefOrLastline = true;
} else if (op == Operation.MATCH || op == Operation.MATCH2 || op == Operation.MATCH3) {
this.usesBackrefOrLastline = true;
} else if (op == Operation.BREAK) {
this.hasBreakInstrs = true;
} else if (i instanceof NonlocalReturnInstr) {
this.hasNonlocalReturns = true;
} else if (i instanceof DefineMetaClassInstr) {
// SSS: Inner-classes are defined with closures and
// a return in the closure can force a return from this method
// For now conservatively assume that a scope with inner-classes
// can receive non-local returns. (Alternatively, have to inspect
// all lexically nested scopes, not just closures in computeScopeFlags())
this.canReceiveNonlocalReturns = true;
}
}
return receivesClosureArg;
}