com.saxonica.bytecode
Class CastableToListCompiler
java.lang.Object
com.saxonica.bytecode.ExpressionCompiler
com.saxonica.bytecode.ToBooleanCompiler
com.saxonica.bytecode.CastableToListCompiler
public class CastableToListCompiler
- extends ToBooleanCompiler
Generate bytecode for evaluation of a CastableToList
Methods inherited from class com.saxonica.bytecode.ExpressionCompiler |
allocateStatic, compileItemFromInt, compileItemFromString, compileToLoop, compileToPrimitive, getConfiguration, handleEmptyStringResult, setConfiguration, throwXPathException, throwXPathException, unboxItem, verify, visitAnnotation, visitLineNumber |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
CastableToListCompiler
public CastableToListCompiler()
compileToBoolean
public void compileToBoolean(CompilerService compiler,
Expression expression)
throws CannotCompileException
- Description copied from class:
ExpressionCompiler
- Generate bytecode to evaluate the expression as a boolean
Precondition: none.
Postcondition: at execution time, the stack contains an integer (0=false, 1=true) representing the result of the expression
- Specified by:
compileToBoolean
in class ExpressionCompiler
- Parameters:
compiler
- the compiler serviceexpression
- the expression to be compiled
- Throws:
CannotCompileException
generateMethod
public void generateMethod(CompilerService compiler,
Expression expression,
org.objectweb.asm.ClassVisitor cv)
- This method generates the method effectiveBooleanValue, returning a boolean.
The reason for doing this is the try-catch block clears the stack when we want to recover
from an exception
- Overrides:
generateMethod
in class ExpressionCompiler
Copyright (c) 2004-2011 Saxonica Limited. All rights reserved.