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CompilerService
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com.saxonica.bytecode.util</FONT>
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Class CompilerService</H2>
<PRE>
<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>com.saxonica.bytecode.util.CompilerService</B>
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<DT><PRE>public class <B>CompilerService</B><DT>extends <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></DL>
</PRE>
<P>
Controlling/service class for compilation of expressions to Java bytecode
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<B>Nested Class Summary</B></FONT></TH>
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<CODE>static class</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.GeneratedClassInfo.html" title="class in com.saxonica.bytecode.util">CompilerService.GeneratedClassInfo</A></B></CODE>
<BR>
</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> class</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.GeneratedExpression.html" title="class in com.saxonica.bytecode.util">CompilerService.GeneratedExpression</A></B></CODE>
<BR>
sub-class GeneratedExpression - used to keep track of ExpressionCompiler classes that need to generate a method</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static class</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.StaticSubClasses.html" title="class in com.saxonica.bytecode.util">CompilerService.StaticSubClasses</A></B></CODE>
<BR>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static class</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.StaticVariableInfo.html" title="class in com.saxonica.bytecode.util">CompilerService.StaticVariableInfo</A></B></CODE>
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<B>Field Summary</B></FONT></TH>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="http://download.oracle.com/javase/6/docs/api/java/util/HashMap.html?is-external=true" title="class or interface in java.util">HashMap</A><com.saxonica.bytecode.util.CompilerService.ObjectIdentityWrapper,<A HREF="../../../../com/saxonica/bytecode/util/CompilerService.StaticSubClasses.html" title="class in com.saxonica.bytecode.util">CompilerService.StaticSubClasses</A>></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#cClassMap">cClassMap</A></B></CODE>
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</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#tracePoint">tracePoint</A></B></CODE>
<BR>
</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#CompilerService(net.sf.saxon.Configuration)">CompilerService</A></B>(<A HREF="../../../../net/sf/saxon/Configuration.html" title="class in net.sf.saxon">Configuration</A> config)</CODE>
<BR>
</TD>
</TR>
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<!-- ========== METHOD SUMMARY =========== -->
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<B>Method Summary</B></FONT></TH>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#addNewMethod(com.saxonica.bytecode.ExpressionCompiler, net.sf.saxon.expr.Expression)">addNewMethod</A></B>(<A HREF="../../../../com/saxonica/bytecode/ExpressionCompiler.html" title="class in com.saxonica.bytecode">ExpressionCompiler</A> ec,
<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> e)</CODE>
<BR>
The methods adds the</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../com/saxonica/bytecode/util/CompilerService.StaticVariableInfo.html" title="class in com.saxonica.bytecode.util">CompilerService.StaticVariableInfo</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#allocateStaticVariableInfo(java.lang.Object)">allocateStaticVariableInfo</A></B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> value)</CODE>
<BR>
Create a StaticVariableInfo containing the information needed to allow a static reference
to a given object to be added as a static field in the currently-being-compiled class</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#canCompileToLoop(net.sf.saxon.expr.Expression)">canCompileToLoop</A></B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> expr)</CODE>
<BR>
Ask if an expression can be compiled using the compileToLoop() method</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#compileToBoolean(net.sf.saxon.expr.Expression)">compileToBoolean</A></B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> expr)</CODE>
<BR>
Generate bytecode to evaluate an expression leaving a boolean on the stack.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../com/saxonica/bytecode/CompiledExpression.html" title="class in com.saxonica.bytecode">CompiledExpression</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#compileToByteCode(net.sf.saxon.expr.Expression, java.lang.String, int)">compileToByteCode</A></B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> expr,
<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> objectName,
int evaluationModes)</CODE>
<BR>
Compile a top-level expression to bytecode, and return the resulting expression</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#compileToItem(net.sf.saxon.expr.Expression)">compileToItem</A></B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> expr)</CODE>
<BR>
Generate bytecode to evaluate an expression leaving either an Item or null on the stack
(null indicating that the expression evaluated to an empty sequence).</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#compileToIterator(net.sf.saxon.expr.Expression)">compileToIterator</A></B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> expr)</CODE>
<BR>
Generate bytecode to evaluate an expression leaving a SequenceIterator on the stack</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#compileToLoop(net.sf.saxon.expr.Expression, com.saxonica.bytecode.util.LoopBodyGenerator)">compileToLoop</A></B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> expr,
<A HREF="../../../../com/saxonica/bytecode/util/LoopBodyGenerator.html" title="class in com.saxonica.bytecode.util">LoopBodyGenerator</A> bodyGen)</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#compileToPrimitive(net.sf.saxon.expr.Expression, java.lang.Class, com.saxonica.bytecode.util.OnEmpty)">compileToPrimitive</A></B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> expr,
<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A> requiredClass,
<A HREF="../../../../com/saxonica/bytecode/util/OnEmpty.html" title="class in com.saxonica.bytecode.util">OnEmpty</A> onEmpty)</CODE>
<BR>
Compile an expression that returns a singleton (or empty) result of type xs:double, xs:float, xs:string,
xs:untypedAtomic.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#compileToPush(net.sf.saxon.expr.Expression)">compileToPush</A></B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> expr)</CODE>
<BR>
Generate bytecode to evaluate an expression by writing events to the current
SequenceReceiver (leaving nothing on the stack at execution time)</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#compileToValueRepresentation(net.sf.saxon.expr.Expression)">compileToValueRepresentation</A></B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> expression)</CODE>
<BR>
Compile code to evaluate a variable reference, or any other expresssion,
leaving a ValueRepresentation on the stack</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#generateGetContext()">generateGetContext</A></B>()</CODE>
<BR>
Generate code to load the current XPathContext, leaving it on the top of the stack</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#generateGetReceiver()">generateGetReceiver</A></B>()</CODE>
<BR>
Generate code to load the current Receiver, leaving it on the top of the stack</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#getCompiledClass(java.lang.Object)">getCompiledClass</A></B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> expr)</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../net/sf/saxon/Configuration.html" title="class in net.sf.saxon">Configuration</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#getConfiguration()">getConfiguration</A></B>()</CODE>
<BR>
Get the Configuration used by this CompilerService</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../com/saxonica/bytecode/util/CompilerService.GeneratedClassInfo.html" title="class in com.saxonica.bytecode.util">CompilerService.GeneratedClassInfo</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#getCurrentClass()">getCurrentClass</A></B>()</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../com/saxonica/bytecode/util/Generator.html" title="class in com.saxonica.bytecode.util">Generator</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#getCurrentGenerator()">getCurrentGenerator</A></B>()</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../com/saxonica/bytecode/util/GeneratedMethodInfo.html" title="class in com.saxonica.bytecode.util">GeneratedMethodInfo</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#getCurrentMethod()">getCurrentMethod</A></B>()</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Stack.html?is-external=true" title="class or interface in java.util">Stack</A><<A HREF="../../../../com/saxonica/bytecode/util/GeneratedMethodInfo.html" title="class in com.saxonica.bytecode.util">GeneratedMethodInfo</A>></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#getCurrentMethods()">getCurrentMethods</A></B>()</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#getFlags()">getFlags</A></B>()</CODE>
<BR>
Get the flag options used by the ClassWriter</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#getUniqueNumber()">getUniqueNumber</A></B>()</CODE>
<BR>
Get a unique number which is different from any other number allocated by a call on this method,
for the same CompilerService instance</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#initNewMethod(com.saxonica.bytecode.util.Generator, boolean)">initNewMethod</A></B>(<A HREF="../../../../com/saxonica/bytecode/util/Generator.html" title="class in com.saxonica.bytecode.util">Generator</A> ga,
boolean holdReceiverAsLocal)</CODE>
<BR>
Initialize context information for a new method.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#isDisplayByteCode()">isDisplayByteCode</A></B>()</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#isInRangeForInt(net.sf.saxon.expr.Expression)">isInRangeForInt</A></B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> exp)</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#isInRangeForLong(net.sf.saxon.expr.Expression)">isInRangeForLong</A></B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> exp)</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#isLanguagePrimitiveType(net.sf.saxon.type.AtomicType)">isLanguagePrimitiveType</A></B>(<A HREF="../../../../net/sf/saxon/type/AtomicType.html" title="interface in net.sf.saxon.type">AtomicType</A> targetType)</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#makeClass(org.objectweb.asm.ClassWriter, java.lang.String)">makeClass</A></B>(org.objectweb.asm.ClassWriter writer,
<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> className)</CODE>
<BR>
Having written the bytecode for all the methods for a class, create the Class itself so it can be used</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#makeValidJavaName(java.lang.String)">makeValidJavaName</A></B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> name)</CODE>
<BR>
Given a candidate Java name, make it into a valid Java name</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#popCurrentMethodInfo()">popCurrentMethodInfo</A></B>()</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#popReceiverInfo()">popReceiverInfo</A></B>()</CODE>
<BR>
Generate code to reinstate the previous current receiver by popping it from the
receiver stack.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#pushNewClassInfo(java.lang.String, java.lang.Class, org.objectweb.asm.ClassWriter)">pushNewClassInfo</A></B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> className,
<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A> superclass,
org.objectweb.asm.ClassWriter cw)</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#pushNewMethodInfo(com.saxonica.bytecode.util.Generator, boolean, int)">pushNewMethodInfo</A></B>(<A HREF="../../../../com/saxonica/bytecode/util/Generator.html" title="class in com.saxonica.bytecode.util">Generator</A> ga,
boolean contextIsArgument,
int contextVariablePosition)</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#pushNewReceiverInfo(com.saxonica.bytecode.util.Generator)">pushNewReceiverInfo</A></B>(<A HREF="../../../../com/saxonica/bytecode/util/Generator.html" title="class in com.saxonica.bytecode.util">Generator</A> ga)</CODE>
<BR>
Generate code to set a new current receiver on the top of the receiver stack.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/saxonica/bytecode/util/CompilerService.html#setCompiledClass(java.lang.Object, java.lang.Class)">setCompiledClass</A></B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> expr,
<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A> clss)</CODE>
<BR>
</TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
</TR>
</TABLE>
<P>
<!-- ============ FIELD DETAIL =========== -->
<A NAME="field_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
<B>Field Detail</B></FONT></TH>
</TR>
</TABLE>
<A NAME="tracePoint"><!-- --></A><H3>
tracePoint</H3>
<PRE>
public static int <B>tracePoint</B></PRE>
<DL>
<DL>
</DL>
</DL>
<HR>
<A NAME="cClassMap"><!-- --></A><H3>
cClassMap</H3>
<PRE>
public <A HREF="http://download.oracle.com/javase/6/docs/api/java/util/HashMap.html?is-external=true" title="class or interface in java.util">HashMap</A><com.saxonica.bytecode.util.CompilerService.ObjectIdentityWrapper,<A HREF="../../../../com/saxonica/bytecode/util/CompilerService.StaticSubClasses.html" title="class in com.saxonica.bytecode.util">CompilerService.StaticSubClasses</A>> <B>cClassMap</B></PRE>
<DL>
<DL>
</DL>
</DL>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<A NAME="constructor_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
<B>Constructor Detail</B></FONT></TH>
</TR>
</TABLE>
<A NAME="CompilerService(net.sf.saxon.Configuration)"><!-- --></A><H3>
CompilerService</H3>
<PRE>
public <B>CompilerService</B>(<A HREF="../../../../net/sf/saxon/Configuration.html" title="class in net.sf.saxon">Configuration</A> config)</PRE>
<DL>
</DL>
<!-- ============ METHOD DETAIL ========== -->
<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
<B>Method Detail</B></FONT></TH>
</TR>
</TABLE>
<A NAME="isLanguagePrimitiveType(net.sf.saxon.type.AtomicType)"><!-- --></A><H3>
isLanguagePrimitiveType</H3>
<PRE>
public static boolean <B>isLanguagePrimitiveType</B>(<A HREF="../../../../net/sf/saxon/type/AtomicType.html" title="interface in net.sf.saxon.type">AtomicType</A> targetType)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="isDisplayByteCode()"><!-- --></A><H3>
isDisplayByteCode</H3>
<PRE>
public boolean <B>isDisplayByteCode</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="addNewMethod(com.saxonica.bytecode.ExpressionCompiler, net.sf.saxon.expr.Expression)"><!-- --></A><H3>
addNewMethod</H3>
<PRE>
public void <B>addNewMethod</B>(<A HREF="../../../../com/saxonica/bytecode/ExpressionCompiler.html" title="class in com.saxonica.bytecode">ExpressionCompiler</A> ec,
<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> e)</PRE>
<DL>
<DD>The methods adds the
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>ec</CODE> - - The ExpressionCompiler that needs to generate a method<DD><CODE>e</CODE> - - The expression represented by the Expressioncompiler</DL>
</DD>
</DL>
<HR>
<A NAME="compileToValueRepresentation(net.sf.saxon.expr.Expression)"><!-- --></A><H3>
compileToValueRepresentation</H3>
<PRE>
public void <B>compileToValueRepresentation</B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> expression)
throws <A HREF="../../../../com/saxonica/bytecode/util/CannotCompileException.html" title="class in com.saxonica.bytecode.util">CannotCompileException</A></PRE>
<DL>
<DD>Compile code to evaluate a variable reference, or any other expresssion,
leaving a ValueRepresentation on the stack
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>expression</CODE> - the expression to be compiled
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../com/saxonica/bytecode/util/CannotCompileException.html" title="class in com.saxonica.bytecode.util">CannotCompileException</A></CODE> - if the expression cannot be compiled</DL>
</DD>
</DL>
<HR>
<A NAME="getCompiledClass(java.lang.Object)"><!-- --></A><H3>
getCompiledClass</H3>
<PRE>
public <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A> <B>getCompiledClass</B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> expr)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="setCompiledClass(java.lang.Object, java.lang.Class)"><!-- --></A><H3>
setCompiledClass</H3>
<PRE>
public void <B>setCompiledClass</B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> expr,
<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A> clss)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getUniqueNumber()"><!-- --></A><H3>
getUniqueNumber</H3>
<PRE>
public int <B>getUniqueNumber</B>()</PRE>
<DL>
<DD>Get a unique number which is different from any other number allocated by a call on this method,
for the same CompilerService instance
<P>
<DD><DL>
<DT><B>Returns:</B><DD>a unique number</DL>
</DD>
</DL>
<HR>
<A NAME="pushNewReceiverInfo(com.saxonica.bytecode.util.Generator)"><!-- --></A><H3>
pushNewReceiverInfo</H3>
<PRE>
public void <B>pushNewReceiverInfo</B>(<A HREF="../../../../com/saxonica/bytecode/util/Generator.html" title="class in com.saxonica.bytecode.util">Generator</A> ga)</PRE>
<DL>
<DD>Generate code to set a new current receiver on the top of the receiver stack.
<p>Runtime precondition: the new receiver is on the top of the bytecode stack</p>
<p>Runtime postcondition: the new receiver is now the current receiver; the previous
current receiver has been added to the receiver stack. The top entry from the
bytecode stack has been consumed.</p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>ga</CODE> - the code generator</DL>
</DD>
</DL>
<HR>
<A NAME="popReceiverInfo()"><!-- --></A><H3>
popReceiverInfo</H3>
<PRE>
public void <B>popReceiverInfo</B>()</PRE>
<DL>
<DD>Generate code to reinstate the previous current receiver by popping it from the
receiver stack.
<p>Runtime precondition: there is a non-empty receiver stack</p>
<p>Runtime postcondition: the top entry in the receiver stack has been removed from the receiver
stack and is now the current receiver.</p>
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="pushNewMethodInfo(com.saxonica.bytecode.util.Generator, boolean, int)"><!-- --></A><H3>
pushNewMethodInfo</H3>
<PRE>
public void <B>pushNewMethodInfo</B>(<A HREF="../../../../com/saxonica/bytecode/util/Generator.html" title="class in com.saxonica.bytecode.util">Generator</A> ga,
boolean contextIsArgument,
int contextVariablePosition)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="initNewMethod(com.saxonica.bytecode.util.Generator, boolean)"><!-- --></A><H3>
initNewMethod</H3>
<PRE>
public void <B>initNewMethod</B>(<A HREF="../../../../com/saxonica/bytecode/util/Generator.html" title="class in com.saxonica.bytecode.util">Generator</A> ga,
boolean holdReceiverAsLocal)</PRE>
<DL>
<DD>Initialize context information for a new method. On entry, the XPathContext object must
be on the top of stack.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>ga</CODE> - the code generator<DD><CODE>holdReceiverAsLocal</CODE> - true if a local variable on the bytecode stack is to be
allocated to hold the current receiver; if false, the receiver is obtained via the context when required</DL>
</DD>
</DL>
<HR>
<A NAME="pushNewClassInfo(java.lang.String, java.lang.Class, org.objectweb.asm.ClassWriter)"><!-- --></A><H3>
pushNewClassInfo</H3>
<PRE>
public void <B>pushNewClassInfo</B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> className,
<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A> superclass,
org.objectweb.asm.ClassWriter cw)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getCurrentMethods()"><!-- --></A><H3>
getCurrentMethods</H3>
<PRE>
public <A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Stack.html?is-external=true" title="class or interface in java.util">Stack</A><<A HREF="../../../../com/saxonica/bytecode/util/GeneratedMethodInfo.html" title="class in com.saxonica.bytecode.util">GeneratedMethodInfo</A>> <B>getCurrentMethods</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getCurrentMethod()"><!-- --></A><H3>
getCurrentMethod</H3>
<PRE>
public <A HREF="../../../../com/saxonica/bytecode/util/GeneratedMethodInfo.html" title="class in com.saxonica.bytecode.util">GeneratedMethodInfo</A> <B>getCurrentMethod</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getCurrentClass()"><!-- --></A><H3>
getCurrentClass</H3>
<PRE>
public <A HREF="../../../../com/saxonica/bytecode/util/CompilerService.GeneratedClassInfo.html" title="class in com.saxonica.bytecode.util">CompilerService.GeneratedClassInfo</A> <B>getCurrentClass</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getConfiguration()"><!-- --></A><H3>
getConfiguration</H3>
<PRE>
public <A HREF="../../../../net/sf/saxon/Configuration.html" title="class in net.sf.saxon">Configuration</A> <B>getConfiguration</B>()</PRE>
<DL>
<DD>Get the Configuration used by this CompilerService
<P>
<DD><DL>
<DT><B>Returns:</B><DD>the Saxon Configuration</DL>
</DD>
</DL>
<HR>
<A NAME="getFlags()"><!-- --></A><H3>
getFlags</H3>
<PRE>
public int <B>getFlags</B>()</PRE>
<DL>
<DD>Get the flag options used by the ClassWriter
<P>
<DD><DL>
<DT><B>Returns:</B><DD>the flags set</DL>
</DD>
</DL>
<HR>
<A NAME="compileToByteCode(net.sf.saxon.expr.Expression, java.lang.String, int)"><!-- --></A><H3>
compileToByteCode</H3>
<PRE>
public <A HREF="../../../../com/saxonica/bytecode/CompiledExpression.html" title="class in com.saxonica.bytecode">CompiledExpression</A> <B>compileToByteCode</B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> expr,
<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> objectName,
int evaluationModes)</PRE>
<DL>
<DD>Compile a top-level expression to bytecode, and return the resulting expression
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>expr</CODE> - The expression to be compiled<DD><CODE>objectName</CODE> - The name of the object (e.g. function) being compiled<DD><CODE>evaluationModes</CODE> - The evaluation modes for which code is generated. Currently a subset of
<A HREF="../../../../net/sf/saxon/expr/Expression.html#PROCESS_METHOD"><CODE>Expression.PROCESS_METHOD</CODE></A>,
<A HREF="../../../../net/sf/saxon/expr/Expression.html#ITERATE_METHOD"><CODE>Expression.ITERATE_METHOD</CODE></A>,
<A HREF="../../../../net/sf/saxon/expr/Expression.html#EVALUATE_METHOD"><CODE>Expression.EVALUATE_METHOD</CODE></A>. If no code is generated for
a given evaluation method, the fallback implementation from the superclass is used.
<DT><B>Returns:</B><DD>The compiled expression if compilation was possible; otherwise null</DL>
</DD>
</DL>
<HR>
<A NAME="compileToIterator(net.sf.saxon.expr.Expression)"><!-- --></A><H3>
compileToIterator</H3>
<PRE>
public void <B>compileToIterator</B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> expr)
throws <A HREF="../../../../com/saxonica/bytecode/util/CannotCompileException.html" title="class in com.saxonica.bytecode.util">CannotCompileException</A></PRE>
<DL>
<DD>Generate bytecode to evaluate an expression leaving a SequenceIterator on the stack
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>expr</CODE> - the expression to be evaluated
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../com/saxonica/bytecode/util/CannotCompileException.html" title="class in com.saxonica.bytecode.util">CannotCompileException</A></CODE> - if the expression cannot be compiled</DL>
</DD>
</DL>
<HR>
<A NAME="compileToPush(net.sf.saxon.expr.Expression)"><!-- --></A><H3>
compileToPush</H3>
<PRE>
public void <B>compileToPush</B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> expr)
throws <A HREF="../../../../com/saxonica/bytecode/util/CannotCompileException.html" title="class in com.saxonica.bytecode.util">CannotCompileException</A></PRE>
<DL>
<DD>Generate bytecode to evaluate an expression by writing events to the current
SequenceReceiver (leaving nothing on the stack at execution time)
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>expr</CODE> - the expression to be evaluated
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../com/saxonica/bytecode/util/CannotCompileException.html" title="class in com.saxonica.bytecode.util">CannotCompileException</A></CODE> - if the expression cannot be compiled</DL>
</DD>
</DL>
<HR>
<A NAME="compileToItem(net.sf.saxon.expr.Expression)"><!-- --></A><H3>
compileToItem</H3>
<PRE>
public void <B>compileToItem</B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> expr)
throws <A HREF="../../../../com/saxonica/bytecode/util/CannotCompileException.html" title="class in com.saxonica.bytecode.util">CannotCompileException</A></PRE>
<DL>
<DD>Generate bytecode to evaluate an expression leaving either an Item or null on the stack
(null indicating that the expression evaluated to an empty sequence).
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>expr</CODE> - the expression to be evaluated
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../com/saxonica/bytecode/util/CannotCompileException.html" title="class in com.saxonica.bytecode.util">CannotCompileException</A></CODE> - if the expression cannot be compiled</DL>
</DD>
</DL>
<HR>
<A NAME="compileToBoolean(net.sf.saxon.expr.Expression)"><!-- --></A><H3>
compileToBoolean</H3>
<PRE>
public void <B>compileToBoolean</B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> expr)
throws <A HREF="../../../../com/saxonica/bytecode/util/CannotCompileException.html" title="class in com.saxonica.bytecode.util">CannotCompileException</A></PRE>
<DL>
<DD>Generate bytecode to evaluate an expression leaving a boolean on the stack.
The boolean represents the effective boolean value of the result of the evaluation.
This method must be implemented for all expressions except where it is statically known
that the expression has no effective boolean value
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>expr</CODE> - the expression to be evaluated
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../com/saxonica/bytecode/util/CannotCompileException.html" title="class in com.saxonica.bytecode.util">CannotCompileException</A></CODE> - if the expression cannot be compiled</DL>
</DD>
</DL>
<HR>
<A NAME="isInRangeForInt(net.sf.saxon.expr.Expression)"><!-- --></A><H3>
isInRangeForInt</H3>
<PRE>
public boolean <B>isInRangeForInt</B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> exp)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="isInRangeForLong(net.sf.saxon.expr.Expression)"><!-- --></A><H3>
isInRangeForLong</H3>
<PRE>
public boolean <B>isInRangeForLong</B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> exp)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="compileToPrimitive(net.sf.saxon.expr.Expression, java.lang.Class, com.saxonica.bytecode.util.OnEmpty)"><!-- --></A><H3>
compileToPrimitive</H3>
<PRE>
public void <B>compileToPrimitive</B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> expr,
<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A> requiredClass,
<A HREF="../../../../com/saxonica/bytecode/util/OnEmpty.html" title="class in com.saxonica.bytecode.util">OnEmpty</A> onEmpty)
throws <A HREF="../../../../com/saxonica/bytecode/util/CannotCompileException.html" title="class in com.saxonica.bytecode.util">CannotCompileException</A></PRE>
<DL>
<DD>Compile an expression that returns a singleton (or empty) result of type xs:double, xs:float, xs:string,
xs:untypedAtomic.
An ExpressionCompiler must support this method if the expression is known statically to return one of these
types.
The code generated will leave an "unboxed" result on the bytecode stack: specifically a double, a float,
a String or CharSequence.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>expr</CODE> - the expression to be compiled<DD><CODE>requiredClass</CODE> - the required class. For an expression with static type xs:double, this will be
Double.TYPE; for xs:float it will be Float.TYPE; for xs:string and xs:untypedAtomic it may be either
String.class or CharSequence.class. The expression compiler MUST generate code that leaves this class
of value on the top of the bytecode stack.
For an expression whose static type is xs:integer, the requiredClass may be Integer.TYPE or Long.TYPE,
provided that either (a) the expression is known always to deliver a value in the range of an int or long
respectively, or (b) that any other value would exceed system limits in the context where it is used (for
example, if it is used as an index into a sequence then it cannot exceed a 32-bit integer). All expressions
that have a static type of xs:integer must therefore implement this method.<DD><CODE>onEmpty</CODE> - action to be taken when the expression returns an empty result.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../com/saxonica/bytecode/util/CannotCompileException.html" title="class in com.saxonica.bytecode.util">CannotCompileException</A></CODE> - if the expression cannot be compiled</DL>
</DD>
</DL>
<HR>
<A NAME="canCompileToLoop(net.sf.saxon.expr.Expression)"><!-- --></A><H3>
canCompileToLoop</H3>
<PRE>
public boolean <B>canCompileToLoop</B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> expr)</PRE>
<DL>
<DD>Ask if an expression can be compiled using the compileToLoop() method
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>expr</CODE> - the expression in question
<DT><B>Returns:</B><DD>true if it can be compiled to a loop</DL>
</DD>
</DL>
<HR>
<A NAME="compileToLoop(net.sf.saxon.expr.Expression, com.saxonica.bytecode.util.LoopBodyGenerator)"><!-- --></A><H3>
compileToLoop</H3>
<PRE>
public void <B>compileToLoop</B>(<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> expr,
<A HREF="../../../../com/saxonica/bytecode/util/LoopBodyGenerator.html" title="class in com.saxonica.bytecode.util">LoopBodyGenerator</A> bodyGen)
throws <A HREF="../../../../com/saxonica/bytecode/util/CannotCompileException.html" title="class in com.saxonica.bytecode.util">CannotCompileException</A></PRE>
<DL>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../com/saxonica/bytecode/util/CannotCompileException.html" title="class in com.saxonica.bytecode.util">CannotCompileException</A></CODE></DL>
</DD>
</DL>
<HR>
<A NAME="getCurrentGenerator()"><!-- --></A><H3>
getCurrentGenerator</H3>
<PRE>
public <A HREF="../../../../com/saxonica/bytecode/util/Generator.html" title="class in com.saxonica.bytecode.util">Generator</A> <B>getCurrentGenerator</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="popCurrentMethodInfo()"><!-- --></A><H3>
popCurrentMethodInfo</H3>
<PRE>
public void <B>popCurrentMethodInfo</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="generateGetContext()"><!-- --></A><H3>
generateGetContext</H3>
<PRE>
public void <B>generateGetContext</B>()</PRE>
<DL>
<DD>Generate code to load the current XPathContext, leaving it on the top of the stack
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="generateGetReceiver()"><!-- --></A><H3>
generateGetReceiver</H3>
<PRE>
public void <B>generateGetReceiver</B>()</PRE>
<DL>
<DD>Generate code to load the current Receiver, leaving it on the top of the stack
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="makeClass(org.objectweb.asm.ClassWriter, java.lang.String)"><!-- --></A><H3>
makeClass</H3>
<PRE>
public <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A> <B>makeClass</B>(org.objectweb.asm.ClassWriter writer,
<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> className)</PRE>
<DL>
<DD>Having written the bytecode for all the methods for a class, create the Class itself so it can be used
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>writer</CODE> - the writer that was used to create the class<DD><CODE>className</CODE> - the name of the class
<DT><B>Returns:</B><DD>the constructed Class object</DL>
</DD>
</DL>
<HR>
<A NAME="allocateStaticVariableInfo(java.lang.Object)"><!-- --></A><H3>
allocateStaticVariableInfo</H3>
<PRE>
public <A HREF="../../../../com/saxonica/bytecode/util/CompilerService.StaticVariableInfo.html" title="class in com.saxonica.bytecode.util">CompilerService.StaticVariableInfo</A> <B>allocateStaticVariableInfo</B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> value)</PRE>
<DL>
<DD>Create a StaticVariableInfo containing the information needed to allow a static reference
to a given object to be added as a static field in the currently-being-compiled class
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>value</CODE> - the object to be referenced
<DT><B>Returns:</B><DD>a StaticVariableInfo object, which will have been queued for later addition to the class</DL>
</DD>
</DL>
<HR>
<A NAME="makeValidJavaName(java.lang.String)"><!-- --></A><H3>
makeValidJavaName</H3>
<PRE>
public <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>makeValidJavaName</B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> name)</PRE>
<DL>
<DD>Given a candidate Java name, make it into a valid Java name
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - a candidate Java name
<DT><B>Returns:</B><DD>a valid Java name</DL>
</DD>
</DL>
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