gnu.xquery.lang

Class XQParser

public class XQParser extends Lexer

A class to read xquery forms.

Field Summary
static String[]	axisNames
static CastableAs	castableAs
Namespace[]	functionNamespacePath
static QuoteExp	getExternalFunction
static InstanceOf	instanceOf
static QuoteExp	makeChildAxisStep
static QuoteExp	makeDescendantAxisStep
static Convert	treatAs
static boolean	warnHidePreviousDeclaration
static boolean	warnOldVersion

Constructor Summary
	XQParser(InPort port, SourceMessages messages, XQuery interp)

Method Summary
void	appendNamedEntity(String name)
static Expression	booleanValue(Expression exp) Coerce the value of an expresison to a boolean value.
Expression	declError(String message)
void	eofError(String msg)
void	error(char severity, String message, String code)
void	error(char severity, String message)
void	fatal(String msg, String code)
void	getDelimited(String delimiter) Scan until a given delimiter.
String	getStaticBaseUri()
void	handleOption(Symbol name, String value)
static Expression	makeFunctionExp(String className, String name)
static Expression	makeFunctionExp(String className, String fieldName, String name)
void	mark()
boolean	match(String word)
void	maybeSetLine(Expression exp, int line, int column)
void	maybeSetLine(Declaration decl, int line, int column)
protected Symbol	namespaceResolve(String name, boolean function)
Expression	parse(Compilation comp) Parse an expression.
Expression	parseDataType()
Expression	parseFLWRExpression(boolean isFor)
Expression	parseFLWRInner(boolean isFor) Parse a let- or a for-expression.
Expression	parseFunctionDefinition(int declLine, int declColumn)
Expression	parseIfExpr()
Expression	parseItemType()
Expression	parseMaybeKindTest()
Expression	parseNamedNodeType(boolean attribute)
Expression	parseOptionalTypeDeclaration() Parse: ["as" SequenceType]
Expression	parseQuantifiedExpr(boolean isEvery) Parse a some- or an every-expression.
Object	parseVariable() Parse a Variable.
Declaration	parseVariableDeclaration()
Object	readObject()
void	reset()
String	resolveAgainstBaseUri(String uri)
void	setInteractive(boolean v)
void	setStaticBaseUri(String uri)
Expression	syntaxError(String message, String code) Handle syntax errors (at rewrite time).
Expression	syntaxError(String message)

Field Detail

castableAs

public static final CastableAs castableAs

functionNamespacePath

public Namespace[] functionNamespacePath

getExternalFunction

public static final QuoteExp getExternalFunction

instanceOf

public static final InstanceOf instanceOf

makeChildAxisStep

public static QuoteExp makeChildAxisStep

makeDescendantAxisStep

public static QuoteExp makeDescendantAxisStep

warnHidePreviousDeclaration

public static boolean warnHidePreviousDeclaration

Constructor Detail

XQParser

public XQParser(InPort port, SourceMessages messages, XQuery interp)

Method Detail

appendNamedEntity

public void appendNamedEntity(String name)

booleanValue

public static Expression booleanValue(Expression exp)

Coerce the value of an expresison to a boolean value.

declError

public Expression declError(String message)

error

public void error(char severity, String message, String code)

error

public void error(char severity, String message)

fatal

public void fatal(String msg, String code)

getDelimited

public void getDelimited(String delimiter)

Scan until a given delimiter. On success, text upto the delimiter is in then tokenBuffer (with tokenBufferLength marking its length); the delimiter is not included.

handleOption

public void handleOption(Symbol name, String value)

makeFunctionExp

public static Expression makeFunctionExp(String className, String name)

makeFunctionExp

public static Expression makeFunctionExp(String className, String fieldName, String name)

maybeSetLine

public void maybeSetLine(Expression exp, int line, int column)

maybeSetLine

public void maybeSetLine(Declaration decl, int line, int column)

namespaceResolve

protected Symbol namespaceResolve(String name, boolean function)

parse

public Expression parse(Compilation comp)

Parse an expression. Return null on EOF.

parseFLWRExpression

public Expression parseFLWRExpression(boolean isFor)

parseFLWRInner

public Expression parseFLWRInner(boolean isFor)

Parse a let- or a for-expression. Assume the 'let'/'for'-token has been seen, and we've read '$'. If we see the 'order' keyword of an 'order by' clause then we stop parsing, and return a result as if we instead saw a 'return make-tuple($x, ...)'. The 'order by' clause will get parsed by the outer-most 'for' or 'let'.