org.apache.xalan.xsltc.compiler
Class FunctionCall

java.lang.Object
  org.apache.xalan.xsltc.compiler.SyntaxTreeNode
      org.apache.xalan.xsltc.compiler.Expression
          org.apache.xalan.xsltc.compiler.FunctionCall

All Implemented Interfaces:

Constants

Direct Known Subclasses:

BooleanCall, CastCall, CeilingCall, ConcatCall, ContainsCall, CurrentCall, DocumentCall, ElementAvailableCall, FloorCall, FormatNumberCall, FunctionAvailableCall, GenerateIdCall, KeyCall, LangCall, LastCall, NameBase, NotCall, NumberCall, PositionCall, RoundCall, StartsWithCall, StringCall, StringLengthCall, UnparsedEntityUriCall

 class FunctionCall
extends Expression

Nested Class Summary

(package private) static class

FunctionCall.JavaType inner class to used in internal2Java mappings, contains the Java type and the distance between the internal type and the Java type.

Field Summary

private java.util.Vector	_arguments
private java.lang.reflect.Constructor	_chosenConstructor
private java.lang.reflect.Method	_chosenMethod
private MethodType	_chosenMethodType
private java.lang.String	_className
private java.lang.Class	_clazz
private static java.util.Hashtable	_extensionFunctionTable
private static java.util.Hashtable	_extensionNamespaceTable
private QName	_fname
private static MultiHashtable	_internal2Java
private boolean	_isExtConstructor
private boolean	_isStatic
private static java.util.Hashtable	_java2Internal
private int	_namespace_format
(package private) Expression	_thisArgument Stores reference to object for non-static Java calls
private static java.util.Vector	EMPTY_ARG_LIST
protected static java.lang.String	EXSLT_COMMON
protected static java.lang.String	EXSLT_DATETIME
protected static java.lang.String	EXSLT_MATH
protected static java.lang.String	EXSLT_SETS
protected static java.lang.String	EXSLT_STRINGS
protected static java.lang.String	EXT_XALAN
protected static java.lang.String	EXT_XSLTC
protected static java.lang.String	JAVA_EXT_XALAN
protected static java.lang.String	JAVA_EXT_XALAN_OLD
protected static java.lang.String	JAVA_EXT_XSLTC
protected static int	NAMESPACE_FORMAT_CLASS
protected static int	NAMESPACE_FORMAT_CLASS_OR_PACKAGE
protected static int	NAMESPACE_FORMAT_JAVA
protected static int	NAMESPACE_FORMAT_PACKAGE
private boolean	unresolvedExternal

Fields inherited from class org.apache.xalan.xsltc.compiler.Expression

_falseList, _trueList, _type

Fields inherited from class org.apache.xalan.xsltc.compiler.SyntaxTreeNode

_attributes, _parent, _qname, Dummy, IndentIncrement, UNKNOWN_STYLESHEET_NODE_ID

Fields inherited from interface org.apache.xalan.xsltc.compiler.Constants

ABSOLUTE_ITERATOR, ACC_FINAL, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_SUPER, ADD_ATTRIBUTE, ADD_ATTRIBUTE_SIG, ADD_ITERATOR, ADD_ITERATOR_SIG, ADD_PARAMETER, ADD_PARAMETER_SIG, APPLY_TEMPLATES, ATTR_SET_SIG, ATTRIBUTE_LIST_FIELD, ATTRIBUTE_LIST_IMPL_CLASS, ATTRIBUTE_LIST_IMPL_SIG, ATTRIBUTES_SIG, BASIS_LIBRARY_CLASS, BOOLEAN_CLASS, BOOLEAN_VALUE, BOOLEAN_VALUE_SIG, CACHED_NODE_LIST_ITERATOR_CLASS, CHARACTERS, CHARACTERS_SIG, CHARACTERSW, CHARACTERSW_SIG, CLEAR_ATTRIBUTES, CLEAR_ATTRIBUTES_SIG, COLLATOR_CLASS, COLLATOR_SIG, COMPILER_PACKAGE, CURRENT_NODE_LIST_FILTER, CURRENT_NODE_LIST_FILTER_SIG, CURRENT_NODE_LIST_ITERATOR, CURRENT_NODE_LIST_ITERATOR_SIG, DEFAULT_NODE_COUNTER, DEFAULT_NODE_COUNTER_SIG, DOCUMENT_PNAME, DOM_ADAPTER_CLASS, DOM_ADAPTER_SIG, DOM_FIELD, DOM_IMPL, DOM_IMPL_CLASS, DOM_IMPL_SIG, DOM_INTF, DOM_INTF_SIG, DOM_PNAME, DOUBLE_CLASS, DOUBLE_SIG, DOUBLE_VALUE, DOUBLE_VALUE_SIG, DUP_FILTERED_ITERATOR, EMPTYATTR_FIELD, EMPTYSTRING, ERROR, EXPAND_STYLESHEET_QNAME_REF, EXPAND_STYLESHEET_QNAME_SIG, FALLBACK_CLASS, FATAL, FILTER_INTERFACE, FILTER_INTERFACE_SIG, FILTER_ITERATOR, FILTER_STEP_ITERATOR, FORMAT_SYMBOLS_FIELD, GET_ATTRIBUTE_VALUE, GET_ATTRIBUTE_VALUE_SIG, GET_CHILDREN, GET_CHILDREN_SIG, GET_ELEMENT_VALUE, GET_ELEMENT_VALUE_SIG, GET_ITERATOR_SIG, GET_NODE_NAME, GET_NODE_NAME_SIG, GET_NODE_TYPE, GET_NODE_TYPE_SIG, GET_NODE_VALUE, GET_NODE_VALUE_ITERATOR, GET_NODE_VALUE_ITERATOR_SIG, GET_NODE_VALUE_SIG, GET_PARAMETER, GET_PARAMETER_SIG, GET_PARENT, GET_PARENT_SIG, GET_TYPED_CHILDREN, GET_TYPED_CHILDREN_SIG, GET_UNPARSED_ENTITY_URI, GET_UNPARSED_ENTITY_URI_SIG, HAS_ATTRIBUTE, HAS_ATTRIBUTE_SIG, HASIDCALL_INDEX, HASIDCALL_INDEX_SIG, INT_VALUE, INT_VALUE_SIG, INTEGER_CLASS, INTEGER_SIG, INTERNAL, INVOKE_METHOD, ITERATOR_FIELD_SIG, ITERATOR_PNAME, KEY_INDEX_CLASS, KEY_INDEX_ITERATOR_SIG, KEY_INDEX_SIG, LAST_INDEX, LOAD_DOCUMENT_CLASS, LOCALE_CLASS, LOCALE_SIG, LOOKUP_STYLESHEET_QNAME_NS_REF, LOOKUP_STYLESHEET_QNAME_NS_SIG, MAKE_NODE, MAKE_NODE_LIST, MAKE_NODE_LIST_SIG, MAKE_NODE_LIST_SIG2, MAKE_NODE_SIG, MAKE_NODE_SIG2, MATCHING_ITERATOR, MATH_CLASS, MULTI_DOM_CLASS, MULTI_DOM_SIG, NAMES_INDEX, NAMES_INDEX_SIG, NAMESPACE_FEATURE, NAMESPACE_INDEX, NAMESPACE_INDEX_SIG, NEXT, NEXT_SIG, NEXTID, NODE, NODE_COUNTER, NODE_COUNTER_SIG, NODE_FIELD, NODE_FIELD_SIG, NODE_ITERATOR, NODE_ITERATOR_BASE, NODE_ITERATOR_SIG, NODE_PNAME, NODE_SIG, NODE_SORT_FACTORY, NODE_SORT_FACTORY_SIG, NODE_SORT_RECORD, NODE_SORT_RECORD_SIG, NS_ANCESTORS_INDEX_SIG, NTH_ITERATOR_CLASS, OBJECT_CLASS, OBJECT_SIG, ORDER_ITERATOR, ORDER_ITERATOR_SIG, OUTPUT_BASE, OUTPUT_HANDLER, OUTPUT_HANDLER_SIG, POP_PARAM_FRAME, POP_PARAM_FRAME_SIG, POSITION_INDEX, PREFIX_URIS_ARRAY_SIG, PREFIX_URIS_IDX_SIG, PUSH_PARAM_FRAME, PUSH_PARAM_FRAME_SIG, REDIRECT_URI, RESET, RESET_SIG, RTF_INITIAL_SIZE, RUNTIME_NODE_CLASS, RUNTIME_PACKAGE, SAX_IMPL, SAX_IMPL_CLASS, SAX_IMPL_SIG, SET_START_NODE, SET_START_NODE_SIG, SINGLETON_ITERATOR, SORT_ITERATOR, SORT_ITERATOR_SIG, STATIC_CHAR_DATA_FIELD, STATIC_CHAR_DATA_FIELD_SIG, STATIC_NAMES_ARRAY_FIELD, STATIC_NAMESPACE_ARRAY_FIELD, STATIC_NS_ANCESTORS_ARRAY_FIELD, STATIC_PREFIX_URIS_ARRAY_FIELD, STATIC_PREFIX_URIS_IDX_ARRAY_FIELD, STATIC_TYPES_ARRAY_FIELD, STATIC_URIS_ARRAY_FIELD, STEP_ITERATOR_CLASS, STREAM_XML_OUTPUT, STRING, STRING_BUFFER_CLASS, STRING_BUFFER_SIG, STRING_CLASS, STRING_SIG, STRING_TO_INT, STRING_TO_INT_SIG, STRING_TO_REAL, STRING_TO_REAL_SIG, STRING_VALUE_HANDLER, STRING_VALUE_HANDLER_SIG, STRING_WRITER, STRIP_SPACE, STRIP_SPACE_INTF, STRIP_SPACE_PARAMS, STRIP_SPACE_SIG, TRANSLET_CLASS, TRANSLET_FIELD, TRANSLET_FIELD_SIG, TRANSLET_INTF, TRANSLET_INTF_SIG, TRANSLET_OUTPUT_BASE, TRANSLET_OUTPUT_INTERFACE, TRANSLET_OUTPUT_PNAME, TRANSLET_OUTPUT_SIG, TRANSLET_PNAME, TRANSLET_SIG, TRANSLET_URI, TRANSLET_VERSION_INDEX, TRANSLET_VERSION_INDEX_SIG, TYPES_INDEX, TYPES_INDEX_SIG, UNION_ITERATOR_CLASS, UNION_ITERATOR_SIG, UNSUPPORTED, URIS_INDEX, URIS_INDEX_SIG, WARNING, WRITER_SIG, XHTML_URI, XMLNS_PREFIX, XMLNS_STRING, XMLNS_URI, XSLT_PACKAGE, XSLT_URI

Constructor Summary

FunctionCall(QName fname)

FunctionCall(QName fname, java.util.Vector arguments)

Method Summary

protected Expression	argument()
protected Expression	argument(int i)
protected int	argumentCount()
private java.util.Vector	findConstructors() Returns a vector with all constructors named _fname after stripping its namespace or null if no such methods exist.
private java.util.Vector	findMethods() Returns a vector with all methods named _fname after stripping its namespace or null if no such methods exist.
java.lang.String	getClassNameFromUri(java.lang.String uri)
private java.lang.String	getMethodSignature(java.util.Vector argsType) Return the signature of the current method
java.lang.String	getName()
(package private) static java.lang.String	getSignature(java.lang.Class clazz) Compute the JVM signature for the class.
(package private) static java.lang.String	getSignature(java.lang.reflect.Constructor cons) Compute the JVM constructor descriptor for the constructor.
(package private) static java.lang.String	getSignature(java.lang.reflect.Method meth) Compute the JVM method descriptor for the method.
boolean	isExtension()
boolean	isStandard()
protected static java.lang.String	replaceDash(java.lang.String name) To support EXSLT extensions, convert names with dash to allowable Java names: e.g., convert abc-xyz to abcXyz.
protected void	setArgument(int i, Expression exp)
void	setParser(Parser parser) Set this node's parser.
java.lang.String	toString()
void	translate(ClassGenerator classGen, MethodGenerator methodGen) Translate a function call.
void	translateDesynthesized(ClassGenerator classGen, MethodGenerator methodGen) Compile the function call and treat as an expression Update true/false-lists.
private void	translateUnallowedExtension(ConstantPoolGen cpg, InstructionList il) Translate code to call the BasisLibrary.unallowed_extensionF(String) method.
Type	typeCheck(SymbolTable stable) Type check a function call.
java.util.Vector	typeCheckArgs(SymbolTable stable) Type check the actual arguments of this function call.
Type	typeCheckConstructor(SymbolTable stable)
Type	typeCheckExternal(SymbolTable stable) Type check a call to an external (Java) method.
Type	typeCheckStandard(SymbolTable stable) Type check a call to a standard function.

Methods inherited from class org.apache.xalan.xsltc.compiler.Expression

backPatchFalseList, backPatchTrueList, compile, desynthesize, evaluateAtCompileTime, getFalseList, getTrueList, getType, hasLastCall, hasPositionCall, lookupPrimop, startIterator, synthesize

Methods inherited from class org.apache.xalan.xsltc.compiler.SyntaxTreeNode

addAttribute, addElement, addPrefixMapping, compileResultTree, contextDependent, dependentContents, display, displayContents, elementAt, elementCount, elements, getAttribute, getAttribute, getAttributes, getContents, getImportPrecedence, getLineNumber, getNodeIDForStylesheetNSLookup, getParent, getParser, getPrefixMapping, getQName, getStylesheet, getSymbolTable, getTemplate, getXSLTC, hasAttribute, hasContents, indent, isDummy, lastChild, lookupNamespace, lookupPrefix, parseChildren, parseContents, removeElement, reportError, reportWarning, setAttributes, setFirstElement, setLineNumber, setParent, setPrefixMapping, setQName, setQName, translateContents, typeCheckContents, updateScope

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

_fname

private QName _fname

_arguments

private final java.util.Vector _arguments

EMPTY_ARG_LIST

private static final java.util.Vector EMPTY_ARG_LIST

EXT_XSLTC

protected static final java.lang.String EXT_XSLTC

See Also:

Constant Field Values

JAVA_EXT_XSLTC

protected static final java.lang.String JAVA_EXT_XSLTC

See Also:

Constant Field Values

EXT_XALAN

protected static final java.lang.String EXT_XALAN

See Also:

Constant Field Values

JAVA_EXT_XALAN

protected static final java.lang.String JAVA_EXT_XALAN

See Also:

Constant Field Values

JAVA_EXT_XALAN_OLD

protected static final java.lang.String JAVA_EXT_XALAN_OLD

See Also:

Constant Field Values

EXSLT_COMMON

protected static final java.lang.String EXSLT_COMMON

See Also:

Constant Field Values

EXSLT_MATH

protected static final java.lang.String EXSLT_MATH

See Also:

Constant Field Values

EXSLT_SETS

protected static final java.lang.String EXSLT_SETS

See Also:

Constant Field Values

EXSLT_DATETIME

protected static final java.lang.String EXSLT_DATETIME

See Also:

Constant Field Values

EXSLT_STRINGS

protected static final java.lang.String EXSLT_STRINGS

See Also:

Constant Field Values

NAMESPACE_FORMAT_JAVA

protected static final int NAMESPACE_FORMAT_JAVA

See Also:

Constant Field Values

NAMESPACE_FORMAT_CLASS

protected static final int NAMESPACE_FORMAT_CLASS

See Also:

Constant Field Values

NAMESPACE_FORMAT_PACKAGE

protected static final int NAMESPACE_FORMAT_PACKAGE

See Also:

Constant Field Values

NAMESPACE_FORMAT_CLASS_OR_PACKAGE

protected static final int NAMESPACE_FORMAT_CLASS_OR_PACKAGE

See Also:

Constant Field Values

_namespace_format

private int _namespace_format

_thisArgument

Expression _thisArgument

Stores reference to object for non-static Java calls

_className

private java.lang.String _className

_clazz

private java.lang.Class _clazz

_chosenMethod

private java.lang.reflect.Method _chosenMethod

_chosenConstructor

private java.lang.reflect.Constructor _chosenConstructor

_chosenMethodType

private MethodType _chosenMethodType

unresolvedExternal

private boolean unresolvedExternal

_isExtConstructor

private boolean _isExtConstructor

_isStatic

private boolean _isStatic

_internal2Java

private static final MultiHashtable _internal2Java

_java2Internal

private static final java.util.Hashtable _java2Internal

_extensionNamespaceTable

private static final java.util.Hashtable _extensionNamespaceTable

_extensionFunctionTable

private static final java.util.Hashtable _extensionFunctionTable

Constructor Detail

FunctionCall

public FunctionCall(QName fname,
                    java.util.Vector arguments)

FunctionCall

public FunctionCall(QName fname)

Method Detail

getName

public java.lang.String getName()

setParser

public void setParser(Parser parser)

Description copied from class: SyntaxTreeNode

Set this node's parser. The parser (the XSLT parser) gives this syntax tree node access to the symbol table and XPath parser.

Overrides:

setParser in class SyntaxTreeNode

Parameters:

parser - The XSLT parser.

getClassNameFromUri

public java.lang.String getClassNameFromUri(java.lang.String uri)

typeCheck

public Type typeCheck(SymbolTable stable)
               throws TypeCheckError

Type check a function call. Since different type conversions apply, type checking is different for standard and external (Java) functions.

Overrides:

typeCheck in class Expression

Parameters:

stable - The compiler/parser's symbol table

Throws:

TypeCheckError

typeCheckStandard

public Type typeCheckStandard(SymbolTable stable)
                       throws TypeCheckError

Type check a call to a standard function. Insert CastExprs when needed. If as a result of the insertion of a CastExpr a type check error is thrown, then catch it and re-throw it with a new "this".

Throws:

TypeCheckError

typeCheckConstructor

public Type typeCheckConstructor(SymbolTable stable)
                          throws TypeCheckError

Throws:

TypeCheckError

typeCheckExternal

public Type typeCheckExternal(SymbolTable stable)
                       throws TypeCheckError

Type check a call to an external (Java) method. The method must be static an public, and a legal type conversion must exist for all its arguments and its return type. Every method of name _fname is inspected as a possible candidate.

Throws:

TypeCheckError

typeCheckArgs

public java.util.Vector typeCheckArgs(SymbolTable stable)
                               throws TypeCheckError

Type check the actual arguments of this function call.

Throws:

TypeCheckError

argument

protected final Expression argument(int i)

argument

protected final Expression argument()

argumentCount

protected final int argumentCount()

setArgument

protected final void setArgument(int i,
                                 Expression exp)

translateDesynthesized

public void translateDesynthesized(ClassGenerator classGen,
                                   MethodGenerator methodGen)

Compile the function call and treat as an expression Update true/false-lists.

Overrides:

translateDesynthesized in class Expression

translate

public void translate(ClassGenerator classGen,
                      MethodGenerator methodGen)

Translate a function call. The compiled code will leave the function's return value on the JVM's stack.

Overrides:

translate in class Expression

Parameters:

classGen - BCEL Java class generator

methodGen - BCEL Java method generator

toString

public java.lang.String toString()

Specified by:

toString in class Expression

isStandard

public boolean isStandard()

isExtension

public boolean isExtension()

findMethods

private java.util.Vector findMethods()

Returns a vector with all methods named _fname after stripping its namespace or null if no such methods exist.

findConstructors

private java.util.Vector findConstructors()

Returns a vector with all constructors named _fname after stripping its namespace or null if no such methods exist.

getSignature

static final java.lang.String getSignature(java.lang.Class clazz)

Compute the JVM signature for the class.

getSignature

static final java.lang.String getSignature(java.lang.reflect.Method meth)

Compute the JVM method descriptor for the method.

getSignature

static final java.lang.String getSignature(java.lang.reflect.Constructor cons)

Compute the JVM constructor descriptor for the constructor.

getMethodSignature

private java.lang.String getMethodSignature(java.util.Vector argsType)

Return the signature of the current method

replaceDash

protected static java.lang.String replaceDash(java.lang.String name)

To support EXSLT extensions, convert names with dash to allowable Java names: e.g., convert abc-xyz to abcXyz. Note: dashes only appear in middle of an EXSLT function or element name.

translateUnallowedExtension

private void translateUnallowedExtension(ConstantPoolGen cpg,
                                         InstructionList il)

Translate code to call the BasisLibrary.unallowed_extensionF(String) method.