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.


Copyright 2006 Apache XML Project. All Rights Reserved.