Examples with ComputedMemoryLocationWriteExpression de.mirkosertic.bytecoder.ssa.ComputedMemoryLocationWriteExpression used on opensource projects

Example 1 with ComputedMemoryLocationWriteExpression

use of de.mirkosertic.bytecoder.ssa.ComputedMemoryLocationWriteExpression in project Bytecoder by mirkosertic.

the class JSSSAWriter method writeExpressions.

private void writeExpressions(ExpressionList aExpressions) {
    for (Expression theExpression : aExpressions.toList()) {
        if (options.isDebugOutput()) {
            String theComment = theExpression.getComment();
            if (theComment != null && !theComment.isEmpty()) {
                print("// ");
                println(theComment);
            }
        }
        if (theExpression instanceof ReturnExpression) {
            ReturnExpression theE = (ReturnExpression) theExpression;
            print("return");
            println(";");
        } else if (theExpression instanceof VariableAssignmentExpression) {
            VariableAssignmentExpression theE = (VariableAssignmentExpression) theExpression;
            Variable theVariable = theE.getVariable();
            Value theValue = theE.getValue();
            if (theValue instanceof ComputedMemoryLocationWriteExpression) {
                continue;
            }
            if (!program.isGlobalVariable(theVariable)) {
                print("var ");
            }
            print(theVariable.getName());
            print(" = ");
            print(theValue);
            print("; // type is ");
            println(theVariable.resolveType().resolve().name() + " value type is " + theValue.resolveType());
        } else if (theExpression instanceof PutStaticExpression) {
            PutStaticExpression theE = (PutStaticExpression) theExpression;
            BytecodeFieldRefConstant theField = theE.getField();
            Value theValue = theE.incomingDataFlows().get(0);
            printStaticFieldReference(theField);
            print(" = ");
            print(theValue);
            println(";");
        } else if (theExpression instanceof ReturnValueExpression) {
            ReturnValueExpression theE = (ReturnValueExpression) theExpression;
            Value theValue = theE.incomingDataFlows().get(0);
            print("return ");
            print(theValue);
            println(";");
        } else if (theExpression instanceof ThrowExpression) {
            ThrowExpression theE = (ThrowExpression) theExpression;
            Value theValue = theE.incomingDataFlows().get(0);
            print("throw ");
            print(theValue);
            println(";");
        } else if (theExpression instanceof InvokeVirtualMethodExpression) {
            InvokeVirtualMethodExpression theE = (InvokeVirtualMethodExpression) theExpression;
            print(theE);
            println(";");
        } else if (theExpression instanceof DirectInvokeMethodExpression) {
            DirectInvokeMethodExpression theE = (DirectInvokeMethodExpression) theExpression;
            print(theE);
            println(";");
        } else if (theExpression instanceof InvokeStaticMethodExpression) {
            InvokeStaticMethodExpression theE = (InvokeStaticMethodExpression) theExpression;
            print(theE);
            println(";");
        } else if (theExpression instanceof PutFieldExpression) {
            PutFieldExpression theE = (PutFieldExpression) theExpression;
            List<Value> theIncomingData = theE.incomingDataFlows();
            Value theTarget = theIncomingData.get(0);
            BytecodeFieldRefConstant theField = theE.getField();
            Value thevalue = theIncomingData.get(1);
            print(theTarget);
            printInstanceFieldReference(theField);
            print(" = ");
            print(thevalue);
            println(";");
        } else if (theExpression instanceof IFExpression) {
            IFExpression theE = (IFExpression) theExpression;
            print("if (");
            print(theE.incomingDataFlows().get(0));
            println(") {");
            withDeeperIndent().writeExpressions(theE.getExpressions());
            println("}");
        } else if (theExpression instanceof GotoExpression) {
            GotoExpression theE = (GotoExpression) theExpression;
            println(generateJumpCodeFor(theE.getJumpTarget()));
        } else if (theExpression instanceof ArrayStoreExpression) {
            ArrayStoreExpression theE = (ArrayStoreExpression) theExpression;
            List<Value> theIncomingData = theE.incomingDataFlows();
            Value theArray = theIncomingData.get(0);
            Value theIndex = theIncomingData.get(1);
            Value theValue = theIncomingData.get(2);
            print(theArray);
            printArrayIndexReference(theIndex);
            print(" = ");
            print(theValue);
            println(";");
        } else if (theExpression instanceof CheckCastExpression) {
            CheckCastExpression theE = (CheckCastExpression) theExpression;
        // Completely ignored
        } else if (theExpression instanceof TableSwitchExpression) {
            TableSwitchExpression theE = (TableSwitchExpression) theExpression;
            Value theValue = theE.incomingDataFlows().get(0);
            print("if (");
            print(theValue);
            print(" < ");
            print(theE.getLowValue());
            print(" || ");
            print(theValue);
            print(" > ");
            print(theE.getHighValue());
            println(") {");
            print(" ");
            writeExpressions(theE.getDefaultExpressions());
            println("}");
            print("switch(");
            print(theValue);
            print(" - ");
            print(theE.getLowValue());
            println(") {");
            for (Map.Entry<Long, ExpressionList> theEntry : theE.getOffsets().entrySet()) {
                print(" case ");
                print(theEntry.getKey());
                println(":");
                print("     ");
                writeExpressions(theEntry.getValue());
            }
            println("}");
            println("throw 'Illegal jump target!';");
        } else if (theExpression instanceof LookupSwitchExpression) {
            LookupSwitchExpression theE = (LookupSwitchExpression) theExpression;
            print("switch(");
            print(theE.incomingDataFlows().get(0));
            println(") {");
            for (Map.Entry<Long, ExpressionList> theEntry : theE.getPairs().entrySet()) {
                print(" case ");
                print(theEntry.getKey());
                println(":");
                print("     ");
                writeExpressions(theEntry.getValue());
            }
            println("}");
            writeExpressions(theE.getDefaultExpressions());
        } else if (theExpression instanceof SetMemoryLocationExpression) {
            SetMemoryLocationExpression theE = (SetMemoryLocationExpression) theExpression;
            List<Value> theIncomingData = theE.incomingDataFlows();
            print("bytecoderGlobalMemory[");
            ComputedMemoryLocationWriteExpression theValue = (ComputedMemoryLocationWriteExpression) theIncomingData.get(0);
            print(theValue);
            print("] = ");
            print(theIncomingData.get(1));
            println(";");
        } else if (theExpression instanceof UnreachableExpression) {
            println("throw 'Unreachable';");
        } else if (theExpression instanceof BreakExpression) {
            BreakExpression theBreak = (BreakExpression) theExpression;
            if (theBreak.isSetLabelRequired()) {
                print("__label__ = ");
                print(theBreak.jumpTarget().getAddress());
                println(";");
            }
            if (!theBreak.isSilent()) {
                print("break $");
                print(theBreak.blockToBreak().name());
                println(";");
            }
        } else if (theExpression instanceof ContinueExpression) {
            ContinueExpression theContinue = (ContinueExpression) theExpression;
            print("__label__ = ");
            print(theContinue.jumpTarget().getAddress());
            println(";");
            print("continue $");
            print(theContinue.labelToReturnTo().name());
            println(";");
        } else {
            throw new IllegalStateException("Not implemented : " + theExpression);
        }
    }
}