org.apache.bcel.classfile.ConstantDouble Java Examples
The following examples show how to use
org.apache.bcel.classfile.ConstantDouble.
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Example #1
Source File: Pass2Verifier.java From commons-bcel with Apache License 2.0 | 6 votes |
private CPESSC_Visitor(final JavaClass _jc) { jc = _jc; cp = _jc.getConstantPool(); cplen = cp.getLength(); CONST_Class = ConstantClass.class; /* CONST_Fieldref = ConstantFieldref.class; CONST_Methodref = ConstantMethodref.class; CONST_InterfaceMethodref = ConstantInterfaceMethodref.class; */ CONST_String = ConstantString.class; CONST_Integer = ConstantInteger.class; CONST_Float = ConstantFloat.class; CONST_Long = ConstantLong.class; CONST_Double = ConstantDouble.class; CONST_NameAndType = ConstantNameAndType.class; CONST_Utf8 = ConstantUtf8.class; carrier = new DescendingVisitor(_jc, this); carrier.visit(); }
Example #2
Source File: FindRoughConstants.java From spotbugs with GNU Lesser General Public License v2.1 | 6 votes |
@Override public void sawOpcode(int seen) { if (seen == Const.LDC || seen == Const.LDC_W || seen == Const.LDC2_W) { Constant c = getConstantRefOperand(); if (c instanceof ConstantFloat) { checkConst(((ConstantFloat) c).getBytes()); } else if (c instanceof ConstantDouble) { checkConst(((ConstantDouble) c).getBytes()); } return; } // Lower priority if the constant is put into array immediately or after the boxing: // this is likely to be just similar number in some predefined dataset (like lookup table) if (seen == Const.INVOKESTATIC && lastBug != null) { if (getNextOpcode() == Const.AASTORE && getNameConstantOperand().equals("valueOf") && (getClassConstantOperand().equals("java/lang/Double") || getClassConstantOperand().equals( "java/lang/Float"))) { lastBug = ((BugInstance) lastBug.clone()); lastBug.setPriority(lastPriority + 1); bugAccumulator.forgetLastBug(); bugAccumulator.accumulateBug(lastBug, this); } } lastBug = null; }
Example #3
Source File: Pass3aVerifier.java From commons-bcel with Apache License 2.0 | 6 votes |
/** Checks if the constraints of operands of the said instruction(s) are satisfied. */ // LDC2_W @Override public void visitLDC2_W(final LDC2_W o) { indexValid(o, o.getIndex()); final Constant c = constantPoolGen.getConstant(o.getIndex()); if (! ( (c instanceof ConstantLong) || (c instanceof ConstantDouble) ) ) { constraintViolated(o, "Operand of LDC2_W must be CONSTANT_Long or CONSTANT_Double, but is '"+c+"'."); } try{ indexValid(o, o.getIndex()+1); } catch(final StaticCodeInstructionOperandConstraintException e) { throw new AssertionViolatedException("Does not BCEL handle that? LDC2_W operand has a problem.", e); } }
Example #4
Source File: OpcodeStack.java From spotbugs with GNU Lesser General Public License v2.1 | 6 votes |
private void pushByConstant(DismantleBytecode dbc, Constant c) { if (c instanceof ConstantClass) { push(new Item("Ljava/lang/Class;", ((ConstantClass) c).getConstantValue(dbc.getConstantPool()))); } else if (c instanceof ConstantInteger) { push(new Item("I", Integer.valueOf(((ConstantInteger) c).getBytes()))); } else if (c instanceof ConstantString) { int s = ((ConstantString) c).getStringIndex(); push(new Item("Ljava/lang/String;", getStringFromIndex(dbc, s))); } else if (c instanceof ConstantFloat) { push(new Item("F", Float.valueOf(((ConstantFloat) c).getBytes()))); } else if (c instanceof ConstantDouble) { push(new Item("D", Double.valueOf(((ConstantDouble) c).getBytes()))); } else if (c instanceof ConstantLong) { push(new Item("J", Long.valueOf(((ConstantLong) c).getBytes()))); } else { throw new UnsupportedOperationException("StaticConstant type not expected"); } }
Example #5
Source File: InstConstraintVisitor.java From ApkToolPlus with Apache License 2.0 | 5 votes |
/** * Ensures the specific preconditions of the said instruction. */ public void visitLDC2_W(LDC2_W o){ // visitCPInstruction is called first. Constant c = cpg.getConstant(o.getIndex()); if (! ( ( c instanceof ConstantLong) || ( c instanceof ConstantDouble ) ) ){ constraintViolated(o, "Referenced constant should be a CONSTANT_Integer, a CONSTANT_Float or a CONSTANT_String, but is '"+c+"'."); } }
Example #6
Source File: InstConstraintVisitor.java From commons-bcel with Apache License 2.0 | 5 votes |
/** * Ensures the specific preconditions of the said instruction. */ @Override public void visitLDC2_W(final LDC2_W o) { // visitCPInstruction is called first. final Constant c = cpg.getConstant(o.getIndex()); if (! ( ( c instanceof ConstantLong) || ( c instanceof ConstantDouble ) ) ) { constraintViolated(o, "Referenced constant should be a CONSTANT_Integer, a CONSTANT_Float or a CONSTANT_String, but is '"+c+"'."); } }
Example #7
Source File: ExecutionVisitor.java From commons-bcel with Apache License 2.0 | 5 votes |
/** Symbolically executes the corresponding Java Virtual Machine instruction. */ @Override public void visitLDC2_W(final LDC2_W o) { final Constant c = cpg.getConstant(o.getIndex()); if (c instanceof ConstantLong) { stack().push(Type.LONG); } if (c instanceof ConstantDouble) { stack().push(Type.DOUBLE); } }
Example #8
Source File: Pass2Verifier.java From commons-bcel with Apache License 2.0 | 5 votes |
@Override public void visitConstantDouble(final ConstantDouble obj) { if (obj.getTag() != Const.CONSTANT_Double) { throw new ClassConstraintException("Wrong constant tag in '"+tostring(obj)+"'."); } //no indices to check }
Example #9
Source File: SimpleElementValueGen.java From commons-bcel with Apache License 2.0 | 5 votes |
@Override public String stringifyValue() { switch (super.getElementValueType()) { case PRIMITIVE_INT: final ConstantInteger c = (ConstantInteger) getConstantPool().getConstant(idx); return Integer.toString(c.getBytes()); case PRIMITIVE_LONG: final ConstantLong j = (ConstantLong) getConstantPool().getConstant(idx); return Long.toString(j.getBytes()); case PRIMITIVE_DOUBLE: final ConstantDouble d = (ConstantDouble) getConstantPool().getConstant(idx); return Double.toString(d.getBytes()); case PRIMITIVE_FLOAT: final ConstantFloat f = (ConstantFloat) getConstantPool().getConstant(idx); return Float.toString(f.getBytes()); case PRIMITIVE_SHORT: final ConstantInteger s = (ConstantInteger) getConstantPool().getConstant(idx); return Integer.toString(s.getBytes()); case PRIMITIVE_BYTE: final ConstantInteger b = (ConstantInteger) getConstantPool().getConstant(idx); return Integer.toString(b.getBytes()); case PRIMITIVE_CHAR: final ConstantInteger ch = (ConstantInteger) getConstantPool().getConstant(idx); return Integer.toString(ch.getBytes()); case PRIMITIVE_BOOLEAN: final ConstantInteger bo = (ConstantInteger) getConstantPool().getConstant(idx); if (bo.getBytes() == 0) { return "false"; } return "true"; case STRING: final ConstantUtf8 cu8 = (ConstantUtf8) getConstantPool().getConstant(idx); return cu8.getBytes(); default: throw new IllegalStateException( "SimpleElementValueGen class does not know how to stringify type " + super.getElementValueType()); } }
Example #10
Source File: ConstantPoolGen.java From commons-bcel with Apache License 2.0 | 5 votes |
/** * Add a new double constant to the ConstantPool, if it is not already in there. * * @param n Double number to add * @return index of entry */ public int addDouble( final double n ) { int ret; if ((ret = lookupDouble(n)) != -1) { return ret; // Already in CP } adjustSize(); ret = index; constants[index] = new ConstantDouble(n); index += 2; // Wastes one entry according to spec return ret; }
Example #11
Source File: ConstantPoolGen.java From commons-bcel with Apache License 2.0 | 5 votes |
/** * Look for ConstantDouble in ConstantPool. * * @param n Double number to look for * @return index on success, -1 otherwise */ public int lookupDouble( final double n ) { final long bits = Double.doubleToLongBits(n); for (int i = 1; i < index; i++) { if (constants[i] instanceof ConstantDouble) { final ConstantDouble c = (ConstantDouble) constants[i]; if (Double.doubleToLongBits(c.getBytes()) == bits) { return i; } } } return -1; }
Example #12
Source File: UnnecessaryMath.java From spotbugs with GNU Lesser General Public License v2.1 | 5 votes |
@Override public void sawOpcode(int seen) { if (state == SEEN_NOTHING) { if ((seen == Const.DCONST_0) || (seen == Const.DCONST_1)) { constValue = seen - Const.DCONST_0; state = SEEN_DCONST; } else if ((seen == Const.LDC2_W) || (seen == Const.LDC_W)) { state = SEEN_DCONST; Constant c = this.getConstantRefOperand(); if (c instanceof ConstantDouble) { constValue = ((ConstantDouble) c).getBytes(); } else if (c instanceof ConstantFloat) { constValue = ((ConstantFloat) c).getBytes(); } else if (c instanceof ConstantLong) { constValue = ((ConstantLong) c).getBytes(); } else { state = SEEN_NOTHING; } } } else if (state == SEEN_DCONST) { if (seen == Const.INVOKESTATIC) { state = SEEN_NOTHING; if ("java.lang.Math".equals(getDottedClassConstantOperand())) { String methodName = getNameConstantOperand(); if (((constValue == 0.0) && zeroMethods.contains(methodName)) || ((constValue == 1.0) && oneMethods.contains(methodName)) || (anyMethods.contains(methodName))) { bugReporter.reportBug(new BugInstance(this, "UM_UNNECESSARY_MATH", LOW_PRIORITY).addClassAndMethod(this) .addSourceLine(this)); } } } state = SEEN_NOTHING; } }
Example #13
Source File: ExecutionVisitor.java From ApkToolPlus with Apache License 2.0 | 5 votes |
/** Symbolically executes the corresponding Java Virtual Machine instruction. */ public void visitLDC2_W(LDC2_W o){ Constant c = cpg.getConstant(o.getIndex()); if (c instanceof ConstantLong){ stack().push(Type.LONG); } if (c instanceof ConstantDouble){ stack().push(Type.DOUBLE); } }
Example #14
Source File: ResolveAllReferences.java From spotbugs with GNU Lesser General Public License v2.1 | 4 votes |
@Override public void visit(JavaClass obj) { compute(); ConstantPool cp = obj.getConstantPool(); Constant[] constants = cp.getConstantPool(); checkConstant: for (int i = 0; i < constants.length; i++) { Constant co = constants[i]; if (co instanceof ConstantDouble || co instanceof ConstantLong) { i++; } if (co instanceof ConstantClass) { String ref = getClassName(obj, i); if ((ref.startsWith("java") || ref.startsWith("org.w3c.dom")) && !defined.contains(ref)) { bugReporter.reportBug(new BugInstance(this, "VR_UNRESOLVABLE_REFERENCE", NORMAL_PRIORITY).addClass(obj) .addString(ref)); } } else if (co instanceof ConstantFieldref) { // do nothing until we handle static fields defined in // interfaces } else if (co instanceof ConstantInvokeDynamic) { // ignore. BCEL puts garbage data into ConstantInvokeDynamic } else if (co instanceof ConstantCP) { ConstantCP co2 = (ConstantCP) co; String className = getClassName(obj, co2.getClassIndex()); // System.out.println("checking " + ref); if (className.equals(obj.getClassName()) || !defined.contains(className)) { // System.out.println("Skipping check of " + ref); continue checkConstant; } ConstantNameAndType nt = (ConstantNameAndType) cp.getConstant(co2.getNameAndTypeIndex()); String name = ((ConstantUtf8) obj.getConstantPool().getConstant(nt.getNameIndex(), Const.CONSTANT_Utf8)).getBytes(); String signature = ((ConstantUtf8) obj.getConstantPool().getConstant(nt.getSignatureIndex(), Const.CONSTANT_Utf8)) .getBytes(); try { JavaClass target = Repository.lookupClass(className); if (!find(target, name, signature)) { bugReporter.reportBug(new BugInstance(this, "VR_UNRESOLVABLE_REFERENCE", NORMAL_PRIORITY).addClass(obj) .addString(getMemberName(target.getClassName(), name, signature))); } } catch (ClassNotFoundException e) { bugReporter.reportMissingClass(e); } } } }
Example #15
Source File: BetterVisitor.java From spotbugs with GNU Lesser General Public License v2.1 | 4 votes |
@Override public void visitConstantDouble(ConstantDouble obj) { visit(obj); }
Example #16
Source File: StringRepresentation.java From commons-bcel with Apache License 2.0 | 4 votes |
@Override public void visitConstantDouble(final ConstantDouble obj) { tostring = toString(obj); }
Example #17
Source File: BetterVisitor.java From spotbugs with GNU Lesser General Public License v2.1 | 4 votes |
public void visit(ConstantDouble obj) { visit((Constant) obj); }
Example #18
Source File: CounterVisitor.java From commons-bcel with Apache License 2.0 | 4 votes |
@Override public void visitConstantDouble(final ConstantDouble obj) { constantDoubleCount++; }