org.apache.xalan.xsltc.compiler
Class SyntaxTreeNode

java.lang.Object
  |
  +--org.apache.xalan.xsltc.compiler.SyntaxTreeNode

Direct Known Subclasses:

org.apache.xalan.xsltc.compiler.Expression, Stylesheet, org.apache.xalan.xsltc.compiler.TopLevelElement

public abstract class SyntaxTreeNode

extends java.lang.Object

implements Constants

Field Summary

static int

UNKNOWN_STYLESHEET_NODE_ID

Constructor Summary

SyntaxTreeNode()
Creates a new SyntaxTreeNode with a 'null' QName and no source file line number reference.

SyntaxTreeNode(int line)
Creates a new SyntaxTreeNode with a 'null' QName.

SyntaxTreeNode(java.lang.String uri, java.lang.String prefix, java.lang.String local)
Creates a new SyntaxTreeNode with no source file line number reference.

Method Summary

void	display(int indent) Displays the contents of this syntax tree node (to stdout).
int	getLineNumber() Get the source file line number for this element.
Parser	getParser() Returns this node's XSLT parser.
Stylesheet	getStylesheet() Get the Stylesheet node that represents the element that this node occured under.
void	parseContents(Parser parser) Parse the contents of this syntax tree nodes (child nodes, XPath expressions, patterns and functions).
abstract void	translate(ClassGenerator classGen, MethodGenerator methodGen) Translate this abstract syntax tree node into JVM bytecodes.
abstract Type	typeCheck(org.apache.xalan.xsltc.compiler.SymbolTable stable) Type check the children of this node.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

UNKNOWN_STYLESHEET_NODE_ID

public static final int UNKNOWN_STYLESHEET_NODE_ID

Constructor Detail

SyntaxTreeNode

public SyntaxTreeNode()

Creates a new SyntaxTreeNode with a 'null' QName and no source file line number reference.

SyntaxTreeNode

public SyntaxTreeNode(int line)

Creates a new SyntaxTreeNode with a 'null' QName.

Parameters:

line - Source file line number reference

SyntaxTreeNode

public SyntaxTreeNode(java.lang.String uri,
                      java.lang.String prefix,
                      java.lang.String local)

Creates a new SyntaxTreeNode with no source file line number reference.

Parameters:

uri - The element's namespace URI

prefix - The element's namespace prefix

local - The element's local name

Method Detail

getLineNumber

public final int getLineNumber()

Get the source file line number for this element. If unavailable, lookup in ancestors.

Returns:

The source file line number.

getParser

public final Parser getParser()

Returns this node's XSLT parser.

Returns:

The XSLT parser.

getStylesheet

public Stylesheet getStylesheet()

Get the Stylesheet node that represents the element that this node occured under.

Returns:

The Stylesheet ancestor node of this node.

parseContents

public void parseContents(Parser parser)

Parse the contents of this syntax tree nodes (child nodes, XPath expressions, patterns and functions). The default behaviour is to parser the syntax tree node's children (since there are no common expressions, patterns, etc. that can be handled in this base class.

Parameters:

parser - reference to the XSLT parser

typeCheck

public abstract Type typeCheck(org.apache.xalan.xsltc.compiler.SymbolTable stable)
                        throws TypeCheckError

Type check the children of this node. The type check phase may add coercions (CastExpr) to the AST.

Parameters:

stable - The compiler/parser's symbol table

translate

public abstract void translate(ClassGenerator classGen,
                               MethodGenerator methodGen)

Translate this abstract syntax tree node into JVM bytecodes.

Parameters:

classGen - BCEL Java class generator

methodGen - BCEL Java method generator

display

public void display(int indent)

Displays the contents of this syntax tree node (to stdout). This method is intended for debugging _only_, and should be overridden by all syntax tree node implementations.

Parameters:

indent - Indentation level for syntax tree levels.