Examples with IntermediateVariable org.candle.decompiler.intermediate.IntermediateVariable used on opensource projects

Example 1 with IntermediateVariable

use of org.candle.decompiler.intermediate.IntermediateVariable in project candle-decompiler by bradsdavis.

the class MethodIntermediateVisitor method visitLoadInstruction.

public void visitLoadInstruction(LoadInstruction instruction) {
    int index = instruction.getIndex();
    if (index >= 0) {
        IntermediateVariable localVar = context.getVariableResolver().getLocalVariable(index, context.getCurrentInstruction().getPosition());
        if (localVar == null) {
            LOG.debug("Did not find local variable: " + index + " for position: " + context.getCurrentInstruction().getPosition());
        }
        Variable variable = null;
        if (localVar == null) {
            //probably need to create a variable for enhanced loops...
            Type type = instruction.getType(context.getMethodGen().getConstantPool());
            localVar = context.getVariableResolver().addLocalVariable(index, context.getCurrentInstruction(), type);
            variable = new GeneratedVariable(context.getCurrentInstruction(), localVar.getType(), localVar.getName());
        } else {
            variable = new Variable(context.getCurrentInstruction(), localVar.getType(), localVar.getName());
        }
        //Variable variable = new Variable(context.getCurrentInstruction(), localVar.getType(), localVar.getName());
        context.getExpressions().push(variable);
        LOG.debug("Loaded: " + variable);
    } else {
        LOG.warn("Did not load because index: " + index);
    }
}

Example 2 with IntermediateVariable

use of org.candle.decompiler.intermediate.IntermediateVariable in project candle-decompiler by bradsdavis.

the class MethodIntermediateVisitor method visitIINC.

public void visitIINC(IINC instruction) {
    //increment variable.
    int index = instruction.getIndex();
    IntermediateVariable iv = context.getVariableResolver().getLocalVariable(index, context.getCurrentInstruction().getPosition());
    Variable variable = null;
    if (iv == null) {
        //generate IV.
        iv = context.getVariableResolver().addLocalVariable(index, context.getCurrentInstruction(), instruction.getType(context.getMethodGen().getConstantPool()));
        variable = new GeneratedVariable(context.getCurrentInstruction(), iv.getType(), iv.getName());
    } else {
        variable = new Variable(context.getCurrentInstruction(), iv.getType(), iv.getName());
    }
    //now, how much does it increment by?
    int incrementBy = instruction.getIncrement();
    StringBuilder incrementerBuilder = new StringBuilder(iv.getName());
    if (incrementBy == 1) {
        incrementerBuilder.append("++");
    } else if (incrementBy == -1) {
        incrementerBuilder.append("--");
    } else if (incrementBy < 1) {
        incrementerBuilder.append(" -= ").append((-1 * incrementBy));
    } else {
        incrementerBuilder.append(" += ").append(incrementBy);
    }
    Expression exp = new Increment(context.getCurrentInstruction(), variable, Type.INT, incrementerBuilder.toString());
    context.pushIntermediateToInstruction(new StatementIntermediate(context.getCurrentInstruction(), exp));
}

Example 3 with IntermediateVariable

use of org.candle.decompiler.intermediate.IntermediateVariable in project candle-decompiler by bradsdavis.

the class MethodIntermediateVisitor method visitStoreInstruction.

public void visitStoreInstruction(StoreInstruction instruction) {
    Expression right = this.context.getExpressions().pop();
    Type type = instruction.getType(context.getMethodGen().getConstantPool());
    //first, check to see whether the variable currently has been declared.
    //this would be the case if we don't get null when looking up the local variable.
    int pc = context.getCurrentInstruction().getPosition();
    int lvtIndex = instruction.getIndex();
    IntermediateVariable iv = context.getVariableResolver().getLocalVariable(lvtIndex, pc);
    //if the variable is not null, it is declared.
    boolean declared = (iv != null);
    Variable variable = null;
    if (!declared) {
        //look it up from the next phase code.
        pc = this.context.getCurrentInstruction().getNext().getPosition();
        iv = context.getVariableResolver().getLocalVariable(lvtIndex, pc);
        if (iv == null) {
            //probably need to create a variable for enhanced loops...
            LOG.debug("Adding index: " + instruction.getIndex() + " as: " + type);
            //try and resolve the type for the variable from the right hand side.
            if (type == Type.OBJECT) {
                if (right instanceof TypedExpression) {
                    type = ((TypedExpression) right).getType();
                }
            }
            //generate variable name...
            iv = context.getVariableResolver().addLocalVariable(instruction.getIndex(), context.getCurrentInstruction(), type);
            variable = new GeneratedVariable(context.getCurrentInstruction(), iv.getType(), iv.getName());
        }
    }
    //create the variable.
    if (variable == null) {
        variable = new Variable(context.getCurrentInstruction(), iv.getType(), iv.getName());
    }
    //create the assignment.
    Assignment assignment = new Assignment(context.getCurrentInstruction(), variable, right);
    Expression left = null;
    if (declared) {
        left = assignment;
    } else {
        //if it is currently not declared... create the declaration.
        left = new Declaration(context.getCurrentInstruction(), variable, assignment);
    }
    StatementIntermediate cl = new StatementIntermediate(context.getCurrentInstruction(), left);
    context.pushIntermediateToInstruction(cl);
    LOG.debug("Stored.");
}