Package com.saxonica.ee.bytecode
Class ToStringCompiler
- java.lang.Object
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- com.saxonica.ee.bytecode.ExpressionCompiler
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- com.saxonica.ee.bytecode.ToItemCompiler
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- com.saxonica.ee.bytecode.ToStringCompiler
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- Direct Known Subclasses:
ConcatCompiler,ForceCaseCompiler,GenerateIdCompiler,NodePropertyCompiler,NormalizeSpaceCompiler,StringFnCompiler,StringJoinCompiler,SubstringAfterCompiler,SubstringBeforeCompiler,TranslateCompiler
public abstract class ToStringCompiler extends ToItemCompiler
Generate bytecode for evaluation of expressions that return a single string (or an empty sequence)
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Constructor Summary
Constructors Constructor Description ToStringCompiler()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected voidcompileItemFromString(CompilerService compiler, Expression expression)Helper method to implement compileFromItem when the class implements compileToPrimitivevoidcompileToItem(CompilerService compiler, Expression expression)Generate bytecode to evaluate the expression as an Item Precondition: none.-
Methods inherited from class com.saxonica.ee.bytecode.ToItemCompiler
compileToBoolean, compileToIterator, compileToPush, returnZeroLengthStringIfNull
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Methods inherited from class com.saxonica.ee.bytecode.ExpressionCompiler
allocateStatic, compileItemFromInt, compileToPrimitive, generateMethod, handleEmptyStringResult, printStackTop, verify, visitAnnotation, visitLineNumber
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Method Detail
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compileToItem
public final void compileToItem(CompilerService compiler, Expression expression) throws CannotCompileException
Generate bytecode to evaluate the expression as an Item Precondition: none. Postcondition: at execution time, the stack contains either an item (the result of the expression), or null (representing an empty sequence).- Specified by:
compileToItemin classExpressionCompiler- Parameters:
compiler- the compiler serviceexpression- the expression to be compiled- Throws:
CannotCompileException- if the expression cannot be compiled to bytecode
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compileItemFromString
protected final void compileItemFromString(CompilerService compiler, Expression expression) throws CannotCompileException
Helper method to implement compileFromItem when the class implements compileToPrimitive- Parameters:
compiler- the compiler serviceexpression- the expression to be compiled- Throws:
CannotCompileException- if the expression cannot be compiled to bytecode
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