1. /*
  2. * Copyright 2001-2004 The Apache Software Foundation.
  3. *
  4. * Licensed under the Apache License, Version 2.0 (the "License");
  5. * you may not use this file except in compliance with the License.
  6. * You may obtain a copy of the License at
  7. *
  8. * http://www.apache.org/licenses/LICENSE-2.0
  9. *
  10. * Unless required by applicable law or agreed to in writing, software
  11. * distributed under the License is distributed on an "AS IS" BASIS,
  12. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13. * See the License for the specific language governing permissions and
  14. * limitations under the License.
  15. */
  16. /*
  17. * $Id: NumberCall.java,v 1.6 2004/02/16 22:24:29 minchau Exp $
  18. */
  19. package com.sun.org.apache.xalan.internal.xsltc.compiler;
  20. import java.util.Vector;
  21. import com.sun.org.apache.bcel.internal.generic.InstructionList;
  22. import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;
  23. import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator;
  24. import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type;
  25. import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError;
  26. /**
  27. * @author Jacek Ambroziak
  28. * @author Santiago Pericas-Geertsen
  29. */
  30. final class NumberCall extends FunctionCall {
  31. public NumberCall(QName fname, Vector arguments) {
  32. super(fname, arguments);
  33. }
  34. public Type typeCheck(SymbolTable stable) throws TypeCheckError {
  35. if (argumentCount() > 0) {
  36. argument().typeCheck(stable);
  37. }
  38. return _type = Type.Real;
  39. }
  40. public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
  41. final InstructionList il = methodGen.getInstructionList();
  42. Type targ;
  43. if (argumentCount() == 0) {
  44. il.append(methodGen.loadContextNode());
  45. targ = Type.Node;
  46. }
  47. else {
  48. final Expression arg = argument();
  49. arg.translate(classGen, methodGen);
  50. arg.startIterator(classGen, methodGen);
  51. targ = arg.getType();
  52. }
  53. if (!targ.identicalTo(Type.Real)) {
  54. targ.translateTo(classGen, methodGen, Type.Real);
  55. }
  56. }
  57. }