Package org.htmlunit.corejs.javascript

Class Parser

java.lang.Object

org.htmlunit.corejs.javascript.Parser

public class Parser
extends java.lang.Object

This class implements the JavaScript parser.

It is based on the SpiderMonkey C source files jsparse.c and jsparse.h in the jsref package.

The parser generates an AstRoot parse tree representing the source code. No tree rewriting is permitted at this stage, so that the parse tree is a faithful representation of the source for frontend processing tools and IDEs.

This parser implementation is not intended to be reused after a parse finishes, and will throw an IllegalStateException() if invoked again.

See Also:

TokenStream

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	Parser.ConditionData
private static class	Parser.ParserException
protected class	Parser.PerFunctionVariables

Field Summary

Fields

Modifier and Type	Field	Description
static int	ARGC_LIMIT	Maximum number of allowed function or constructor arguments, to follow SpiderMonkey.
(package private) boolean	calledByCompileFunction
(package private) static int	CLEAR_TI_MASK
(package private) CompilerEnvirons	compilerEnv
private int	currentFlaggedToken
private Comment	currentJsDocComment
private LabeledStatement	currentLabel
(package private) Scope	currentScope
(package private) ScriptNode	currentScriptOrFn
private int	currentToken
private boolean	defaultUseStrictDirective
private int	endFlags
private IdeErrorReporter	errorCollector
private ErrorReporter	errorReporter
private static int	GET_ENTRY
private boolean	inDestructuringAssignment
private boolean	inForInit
protected boolean	inUseStrictDirective
private java.util.Map<java.lang.String,LabeledStatement>	labelSet
private java.util.List<Jump>	loopAndSwitchSet
private java.util.List<Loop>	loopSet
private static int	METHOD_ENTRY
protected int	nestingOfFunction
private boolean	parseFinished
private int	prevNameTokenLineno
private int	prevNameTokenStart
private java.lang.String	prevNameTokenString
private static int	PROP_ENTRY
private java.util.List<Comment>	scannedComments
private static int	SET_ENTRY
private char[]	sourceChars
private java.lang.String	sourceURI
private int	syntaxErrorCount
(package private) static int	TI_AFTER_EOL
(package private) static int	TI_CHECK_LABEL
private TokenStream	ts

Constructor Summary

Constructors

Constructor	Description
Parser()
Parser(CompilerEnvirons compilerEnv)
Parser(CompilerEnvirons compilerEnv, ErrorReporter errorReporter)

Method Summary

Modifier and Type	Method	Description
(package private) void	addError(java.lang.String messageId)
(package private) void	addError(java.lang.String messageId, int c)
(package private) void	addError(java.lang.String messageId, int position, int length)
(package private) void	addError(java.lang.String messageId, java.lang.String messageArg)
(package private) void	addError(java.lang.String messageId, java.lang.String messageArg, int position, int length)
private void	addError(java.lang.String messageId, java.lang.String messageArg, int position, int length, int line, java.lang.String lineSource, int lineOffset)
private AstNode	addExpr()
(package private) void	addStrictWarning(java.lang.String messageId, java.lang.String messageArg)
(package private) void	addStrictWarning(java.lang.String messageId, java.lang.String messageArg, int position, int length)
private void	addStrictWarning(java.lang.String messageId, java.lang.String messageArg, int position, int length, int line, java.lang.String lineSource, int lineOffset)
(package private) void	addWarning(java.lang.String messageId, int position, int length)
(package private) void	addWarning(java.lang.String messageId, java.lang.String messageArg)
(package private) void	addWarning(java.lang.String messageId, java.lang.String messageArg, int position, int length)
private void	addWarning(java.lang.String messageId, java.lang.String messageArg, int position, int length, int line, java.lang.String lineSource, int lineOffset)
private AstNode	andExpr()
private java.util.List<AstNode>	argumentList()
private AstNode	arrayComprehension(AstNode result, int pos)	Parse a JavaScript 1.7 Array comprehension.
private ArrayComprehensionLoop	arrayComprehensionLoop()
private AstNode	arrayLiteral()	May return an ArrayLiteral or ArrayComprehension.
private AstNode	arrowFunction(AstNode params)
private void	arrowFunctionParams(FunctionNode fnNode, AstNode params, java.util.Map<java.lang.String,Node> destructuring, java.util.Set<java.lang.String> paramNames)
private AstNode	assignExpr()
private AstNode	attributeAccess()	Xml attribute expression:
private void	autoInsertSemicolon(AstNode pn)
private AstNode	bitAndExpr()
private AstNode	bitOrExpr()
private AstNode	bitXorExpr()
private AstNode	block()
private BreakStatement	breakStatement()
protected void	checkActivationName(java.lang.String name, int token)
private void	checkBadIncDec(UpdateExpression expr)
private void	checkCallRequiresActivation(AstNode pn)
protected void	checkMutableReference(Node n)
private java.lang.RuntimeException	codeBug()
private AstNode	condExpr()
private Parser.ConditionData	condition()
private void	consumeToken()
private ContinueStatement	continueStatement()
(package private) Node	createDestructuringAssignment(int type, Node left, Node right)	Given a destructuring assignment with a left hand side parsed as an array or object literal and a right hand side expression, rewrite as a series of assignments to the variables defined in left from property accesses to the expression on the right.
protected Node	createName(int type, java.lang.String name, Node child)
protected Node	createName(java.lang.String name)
private Name	createNameNode()
private Name	createNameNode(boolean checkActivation, int token)	Create a Name node using the token info from the last scanned name.
protected Node	createNumber(double number)
private AstNode	createNumericLiteral(int tt, boolean isProperty)
(package private) Parser.PerFunctionVariables	createPerFunctionVariables(FunctionNode fnNode)
protected Scope	createScopeNode(int token, int lineno)	Create a node that can be used to hold lexically scoped variable definitions (via let declarations).
private StringLiteral	createStringLiteral()
private TemplateCharacters	createTemplateLiteralCharacters(int pos)
private AstNode	defaultXmlNamespace()
(package private) void	defineSymbol(int declType, java.lang.String name)
(package private) void	defineSymbol(int declType, java.lang.String name, boolean ignoreNotInBlock)
(package private) boolean	destructuringArray(ArrayLiteral array, int variableType, java.lang.String tempName, Node parent, java.util.List<java.lang.String> destructuringNames)
(package private) Node	destructuringAssignmentHelper(int variableType, Node left, Node right, java.lang.String tempName)
(package private) boolean	destructuringObject(ObjectLiteral node, int variableType, java.lang.String tempName, Node parent, java.util.List<java.lang.String> destructuringNames)
private AstNode	destructuringPrimaryExpr()
private DoLoop	doLoop()
private void	enterLoop(Loop loop)
private void	enterSwitch(SwitchStatement node)
boolean	eof()
private AstNode	eqExpr()
private void	exitLoop()
private void	exitSwitch()
private AstNode	expExpr()
private AstNode	expr(boolean allowTrailingComma)
private Loop	forLoop()
private AstNode	forLoopInit(int tt)
private FunctionNode	function(int type)
private FunctionNode	function(int type, boolean isGenerator)
private AstNode	generatorExpression(AstNode result, int pos)
private AstNode	generatorExpression(AstNode result, int pos, boolean inFunctionParams)
private GeneratorExpressionLoop	generatorExpressionLoop()
private Comment	getAndResetJsDoc()
private static java.lang.String	getDirective(AstNode n)
private AstNode	getNextStatementAfterInlineComments(AstNode pn)
private static int	getNodeEnd(AstNode n)
private IfStatement	ifStatement()
(package private) boolean	insideFunction()
boolean	inUseStrictDirective()
private AstNode	let(boolean isStatement, int pos)
private AstNode	letStatement()
private int	lineBeginningFor(int pos)	Return the file offset of the beginning of the input source line containing the passed position.
(package private) java.lang.String	lookupMessage(java.lang.String messageId)
(package private) java.lang.String	lookupMessage(java.lang.String messageId, java.lang.String messageArg)
private ErrorNode	makeErrorNode()
(package private) void	markDestructuring(AstNode node)
private LabeledStatement	matchJumpLabelName()
private boolean	matchToken(int toMatch, boolean ignoreComment)
private AstNode	memberExpr(boolean allowCallSyntax)	Parse a new-expression, or if next token isn't Token.NEW, a primary expression.
private AstNode	memberExprTail(boolean allowCallSyntax, AstNode pn)	Parse any number of "(expr)", "[expr]" ".expr", "..expr", or ".(expr)" constructs trailing the passed expression.
private ObjectProperty	methodDefinition(int pos, AstNode propName, int entryKind)
private AstNode	mulExpr()
private void	mustHaveXML()
private boolean	mustMatchToken(int toMatch, java.lang.String messageId, boolean ignoreComment)
private boolean	mustMatchToken(int toMatch, java.lang.String msgId, int pos, int len, boolean ignoreComment)
private AstNode	name(int ttFlagged, int tt)
private AstNode	nameOrLabel()	Found a name in a statement context.
private int	nextToken()
private static int	nodeEnd(AstNode node)
private static boolean	nowAllSet(int before, int after, int mask)	Returns whether or not the bits in the mask have changed to all set.
private ObjectLiteral	objectLiteral()
private AstNode	objliteralProperty()
private AstNode	orExpr()
private AstNode	parenExpr()
private AstRoot	parse()
AstRoot	parse(java.io.Reader sourceReader, java.lang.String sourceURI, int lineno)	Deprecated. use parse(String, String, int) instead
AstRoot	parse(java.lang.String sourceString, java.lang.String sourceURI, int lineno)	Builds a parse tree from the given source string.
private AstNode	parseFunctionBody(int type, FunctionNode fnNode)
private void	parseFunctionParams(FunctionNode fnNode)
private int	peekFlaggedToken()
private int	peekToken()
private int	peekTokenOrEOL()
private int	peekUntilNonComment(int tt)
private ObjectProperty	plainProperty(AstNode property, int ptt)
(package private) void	popScope()
private AstNode	primaryExpr()
private AstNode	propertyAccess(int tt, AstNode pn)	Handles any construct following a "." or ".." operator.
private AstNode	propertyName(int atPos, int memberTypeFlags)	Check if :: follows name in which case it becomes a qualified name.
(package private) void	pushScope(Scope scope)
private void	recordComment(int lineno, java.lang.String comment)
private void	recordLabel(Label label, LabeledStatement bundle)
private AstNode	relExpr()
protected AstNode	removeParens(AstNode node)
(package private) void	reportError(java.lang.String messageId)
(package private) void	reportError(java.lang.String messageId, int position, int length)
(package private) void	reportError(java.lang.String messageId, java.lang.String messageArg)
(package private) void	reportError(java.lang.String messageId, java.lang.String messageArg, int position, int length)
private void	restoreRelativeLoopPosition(Loop loop)
private AstNode	returnOrYield(int tt, boolean exprContext)
private void	saveNameTokenData(int pos, java.lang.String name, int lineno)
void	setDefaultUseStrictDirective(boolean useStrict)
protected void	setIsGenerator()
protected void	setRequiresActivation()
private AstNode	shiftExpr()
protected Node	simpleAssignment(Node left, Node right)
private AstNode	statement()
private AstNode	statementHelper()
private AstNode	statements()
private AstNode	statements(AstNode parent)
private SwitchStatement	switchStatement()
private AstNode	taggedTemplateLiteral(AstNode pn)
private AstNode	templateLiteral(boolean isTaggedLiteral)
private ThrowStatement	throwStatement()
private TryStatement	tryStatement()
private AstNode	unaryExpr()
private VariableDeclaration	variables(int declType, int pos, boolean isStatement)	Parse a 'var' or 'const' statement, or a 'var' init list in a for statement.
private void	warnMissingSemi(int pos, int end)
private void	warnTrailingComma(int pos, java.util.List<?> elems, int commaPos)
private WhileLoop	whileLoop()
private WithStatement	withStatement()
private XmlElemRef	xmlElemRef(int atPos, Name namespace, int colonPos)	Parse the [expr] portion of an xml element reference, e.g.
private AstNode	xmlInitializer()

Methods inherited from class java.lang.Object

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

Field Detail

ARGC_LIMIT

public static final int ARGC_LIMIT

Maximum number of allowed function or constructor arguments, to follow SpiderMonkey.

See Also:

Constant Field Values

CLEAR_TI_MASK

static final int CLEAR_TI_MASK

See Also:

Constant Field Values

TI_AFTER_EOL

static final int TI_AFTER_EOL

See Also:

Constant Field Values

TI_CHECK_LABEL

static final int TI_CHECK_LABEL

See Also:

Constant Field Values

compilerEnv

CompilerEnvirons compilerEnv

errorReporter

private ErrorReporter errorReporter

errorCollector

private IdeErrorReporter errorCollector

sourceURI

private java.lang.String sourceURI

sourceChars

private char[] sourceChars

calledByCompileFunction

boolean calledByCompileFunction

parseFinished

private boolean parseFinished

ts

private TokenStream ts

currentFlaggedToken

private int currentFlaggedToken

currentToken

private int currentToken

syntaxErrorCount

private int syntaxErrorCount

scannedComments

private java.util.List<Comment> scannedComments

currentJsDocComment

private Comment currentJsDocComment

nestingOfFunction

protected int nestingOfFunction

currentLabel

private LabeledStatement currentLabel

inDestructuringAssignment

private boolean inDestructuringAssignment

inUseStrictDirective

protected boolean inUseStrictDirective

currentScriptOrFn

ScriptNode currentScriptOrFn

currentScope

Scope currentScope

endFlags

private int endFlags

inForInit

private boolean inForInit

labelSet

private java.util.Map<java.lang.String,LabeledStatement> labelSet

loopSet

private java.util.List<Loop> loopSet

loopAndSwitchSet

private java.util.List<Jump> loopAndSwitchSet

prevNameTokenStart

private int prevNameTokenStart

prevNameTokenString

private java.lang.String prevNameTokenString

prevNameTokenLineno

private int prevNameTokenLineno

defaultUseStrictDirective

private boolean defaultUseStrictDirective

PROP_ENTRY

private static final int PROP_ENTRY

See Also:

Constant Field Values

GET_ENTRY

private static final int GET_ENTRY

See Also:

Constant Field Values

SET_ENTRY

private static final int SET_ENTRY

See Also:

Constant Field Values

METHOD_ENTRY

private static final int METHOD_ENTRY

See Also:

Constant Field Values

Constructor Detail

Parser

public Parser()

Parser

public Parser(CompilerEnvirons compilerEnv)

Parser

public Parser(CompilerEnvirons compilerEnv,
              ErrorReporter errorReporter)

Method Detail

addStrictWarning

void addStrictWarning(java.lang.String messageId,
                      java.lang.String messageArg)

addStrictWarning

void addStrictWarning(java.lang.String messageId,
                      java.lang.String messageArg,
                      int position,
                      int length)

addWarning

void addWarning(java.lang.String messageId,
                java.lang.String messageArg)

addWarning

void addWarning(java.lang.String messageId,
                int position,
                int length)

addWarning

void addWarning(java.lang.String messageId,
                java.lang.String messageArg,
                int position,
                int length)

addError

void addError(java.lang.String messageId)

addError

void addError(java.lang.String messageId,
              int position,
              int length)

addError

void addError(java.lang.String messageId,
              java.lang.String messageArg)

addError

void addError(java.lang.String messageId,
              int c)

addError

void addError(java.lang.String messageId,
              java.lang.String messageArg,
              int position,
              int length)

addStrictWarning

private void addStrictWarning(java.lang.String messageId,
                              java.lang.String messageArg,
                              int position,
                              int length,
                              int line,
                              java.lang.String lineSource,
                              int lineOffset)

addWarning

private void addWarning(java.lang.String messageId,
                        java.lang.String messageArg,
                        int position,
                        int length,
                        int line,
                        java.lang.String lineSource,
                        int lineOffset)

addError

private void addError(java.lang.String messageId,
                      java.lang.String messageArg,
                      int position,
                      int length,
                      int line,
                      java.lang.String lineSource,
                      int lineOffset)

lookupMessage

java.lang.String lookupMessage(java.lang.String messageId)

lookupMessage

java.lang.String lookupMessage(java.lang.String messageId,
                               java.lang.String messageArg)

reportError

void reportError(java.lang.String messageId)

reportError

void reportError(java.lang.String messageId,
                 java.lang.String messageArg)

reportError

void reportError(java.lang.String messageId,
                 int position,
                 int length)

reportError

void reportError(java.lang.String messageId,
                 java.lang.String messageArg,
                 int position,
                 int length)

getNodeEnd

private static int getNodeEnd(AstNode n)

recordComment

private void recordComment(int lineno,
                           java.lang.String comment)

getAndResetJsDoc

private Comment getAndResetJsDoc()

peekToken

private int peekToken()
               throws java.io.IOException

Throws:

java.io.IOException

peekFlaggedToken

private int peekFlaggedToken()
                      throws java.io.IOException

Throws:

java.io.IOException

consumeToken

private void consumeToken()

nextToken

private int nextToken()
               throws java.io.IOException

Throws:

java.io.IOException

matchToken

private boolean matchToken(int toMatch,
                           boolean ignoreComment)
                    throws java.io.IOException

Throws:

java.io.IOException

peekTokenOrEOL

private int peekTokenOrEOL()
                    throws java.io.IOException

Throws:

java.io.IOException

mustMatchToken

private boolean mustMatchToken(int toMatch,
                               java.lang.String messageId,
                               boolean ignoreComment)
                        throws java.io.IOException

Throws:

java.io.IOException

mustMatchToken

private boolean mustMatchToken(int toMatch,
                               java.lang.String msgId,
                               int pos,
                               int len,
                               boolean ignoreComment)
                        throws java.io.IOException

Throws:

java.io.IOException

mustHaveXML

private void mustHaveXML()

eof

public boolean eof()

insideFunction

boolean insideFunction()

pushScope

void pushScope(Scope scope)

popScope

void popScope()

enterLoop

private void enterLoop(Loop loop)

exitLoop

private void exitLoop()

restoreRelativeLoopPosition

private void restoreRelativeLoopPosition(Loop loop)

enterSwitch

private void enterSwitch(SwitchStatement node)

exitSwitch

private void exitSwitch()

parse

public AstRoot parse(java.lang.String sourceString,
                     java.lang.String sourceURI,
                     int lineno)

Builds a parse tree from the given source string.

Returns:

an AstRoot object representing the parsed program. If the parse fails, null will be returned. (The parse failure will result in a call to the ErrorReporter from CompilerEnvirons.)

parse

@Deprecated
public AstRoot parse(java.io.Reader sourceReader,
                     java.lang.String sourceURI,
                     int lineno)
              throws java.io.IOException

Deprecated.

use parse(String, String, int) instead

Builds a parse tree from the given sourcereader.

Throws:

java.io.IOException - if the Reader encounters an error

See Also:

parse(String,String,int)

parse

private AstRoot parse()
               throws java.io.IOException

Throws:

java.io.IOException

parseFunctionBody

private AstNode parseFunctionBody(int type,
                                  FunctionNode fnNode)
                           throws java.io.IOException

Throws:

java.io.IOException

getDirective

private static java.lang.String getDirective(AstNode n)

parseFunctionParams

private void parseFunctionParams(FunctionNode fnNode)
                          throws java.io.IOException

Throws:

java.io.IOException

function

private FunctionNode function(int type)
                       throws java.io.IOException

Throws:

java.io.IOException

function

private FunctionNode function(int type,
                              boolean isGenerator)
                       throws java.io.IOException

Throws:

java.io.IOException

arrowFunction

private AstNode arrowFunction(AstNode params)
                       throws java.io.IOException

Throws:

java.io.IOException

arrowFunctionParams

private void arrowFunctionParams(FunctionNode fnNode,
                                 AstNode params,
                                 java.util.Map<java.lang.String,Node> destructuring,
                                 java.util.Set<java.lang.String> paramNames)

statements

private AstNode statements(AstNode parent)
                    throws java.io.IOException

Throws:

java.io.IOException

statements

private AstNode statements()
                    throws java.io.IOException

Throws:

java.io.IOException

condition

private Parser.ConditionData condition()
                                throws java.io.IOException

Throws:

java.io.IOException

statement

private AstNode statement()
                   throws java.io.IOException

Throws:

java.io.IOException

statementHelper

private AstNode statementHelper()
                         throws java.io.IOException

Throws:

java.io.IOException

autoInsertSemicolon

private void autoInsertSemicolon(AstNode pn)
                          throws java.io.IOException

Throws:

java.io.IOException

ifStatement

private IfStatement ifStatement()
                         throws java.io.IOException

Throws:

java.io.IOException

switchStatement

private SwitchStatement switchStatement()
                                 throws java.io.IOException

Throws:

java.io.IOException

whileLoop

private WhileLoop whileLoop()
                     throws java.io.IOException

Throws:

java.io.IOException

doLoop

private DoLoop doLoop()
               throws java.io.IOException

Throws:

java.io.IOException

peekUntilNonComment

private int peekUntilNonComment(int tt)
                         throws java.io.IOException

Throws:

java.io.IOException

getNextStatementAfterInlineComments

private AstNode getNextStatementAfterInlineComments(AstNode pn)
                                             throws java.io.IOException

Throws:

java.io.IOException

forLoop

private Loop forLoop()
              throws java.io.IOException

Throws:

java.io.IOException

forLoopInit

private AstNode forLoopInit(int tt)
                     throws java.io.IOException

Throws:

java.io.IOException

tryStatement

private TryStatement tryStatement()
                           throws java.io.IOException

Throws:

java.io.IOException

throwStatement

private ThrowStatement throwStatement()
                               throws java.io.IOException

Throws:

java.io.IOException

matchJumpLabelName

private LabeledStatement matchJumpLabelName()
                                     throws java.io.IOException

Throws:

java.io.IOException

breakStatement

private BreakStatement breakStatement()
                               throws java.io.IOException

Throws:

java.io.IOException

continueStatement

private ContinueStatement continueStatement()
                                     throws java.io.IOException

Throws:

java.io.IOException

withStatement

private WithStatement withStatement()
                             throws java.io.IOException

Throws:

java.io.IOException

letStatement

private AstNode letStatement()
                      throws java.io.IOException

Throws:

java.io.IOException

nowAllSet

private static final boolean nowAllSet(int before,
                                       int after,
                                       int mask)

Returns whether or not the bits in the mask have changed to all set.

Parameters:

before - bits before change

after - bits after change

mask - mask for bits

Returns:

true if all the bits in the mask are set in "after" but not in "before"

returnOrYield

private AstNode returnOrYield(int tt,
                              boolean exprContext)
                       throws java.io.IOException

Throws:

java.io.IOException

block

private AstNode block()
               throws java.io.IOException

Throws:

java.io.IOException

defaultXmlNamespace

private AstNode defaultXmlNamespace()
                             throws java.io.IOException

Throws:

java.io.IOException

recordLabel

private void recordLabel(Label label,
                         LabeledStatement bundle)
                  throws java.io.IOException

Throws:

java.io.IOException

nameOrLabel

private AstNode nameOrLabel()
                     throws java.io.IOException

Found a name in a statement context. If it's a label, we gather up any following labels and the next non-label statement into a LabeledStatement "bundle" and return that. Otherwise we parse an expression and return it wrapped in an ExpressionStatement.

Throws:

java.io.IOException

variables

private VariableDeclaration variables(int declType,
                                      int pos,
                                      boolean isStatement)
                               throws java.io.IOException

Parse a 'var' or 'const' statement, or a 'var' init list in a for statement.

Parameters:

declType - A token value: either VAR, CONST, or LET depending on context.

pos - the position where the node should start. It's sometimes the var/const/let keyword, and other times the beginning of the first token in the first variable declaration.

Returns:

the parsed variable list

Throws:

java.io.IOException

let

private AstNode let(boolean isStatement,
                    int pos)
             throws java.io.IOException

Throws:

java.io.IOException

defineSymbol

void defineSymbol(int declType,
                  java.lang.String name)

defineSymbol

void defineSymbol(int declType,
                  java.lang.String name,
                  boolean ignoreNotInBlock)

expr

private AstNode expr(boolean allowTrailingComma)
              throws java.io.IOException

Throws:

java.io.IOException

assignExpr

private AstNode assignExpr()
                    throws java.io.IOException

Throws:

java.io.IOException

condExpr

private AstNode condExpr()
                  throws java.io.IOException

Throws:

java.io.IOException

orExpr

private AstNode orExpr()
                throws java.io.IOException

Throws:

java.io.IOException

andExpr

private AstNode andExpr()
                 throws java.io.IOException

Throws:

java.io.IOException

bitOrExpr

private AstNode bitOrExpr()
                   throws java.io.IOException

Throws:

java.io.IOException

bitXorExpr

private AstNode bitXorExpr()
                    throws java.io.IOException

Throws:

java.io.IOException

bitAndExpr

private AstNode bitAndExpr()
                    throws java.io.IOException

Throws:

java.io.IOException

eqExpr

private AstNode eqExpr()
                throws java.io.IOException

Throws:

java.io.IOException

relExpr

private AstNode relExpr()
                 throws java.io.IOException

Throws:

java.io.IOException

shiftExpr

private AstNode shiftExpr()
                   throws java.io.IOException

Throws:

java.io.IOException

addExpr

private AstNode addExpr()
                 throws java.io.IOException

Throws:

java.io.IOException

mulExpr

private AstNode mulExpr()
                 throws java.io.IOException

Throws:

java.io.IOException

expExpr

private AstNode expExpr()
                 throws java.io.IOException

Throws:

java.io.IOException

unaryExpr

private AstNode unaryExpr()
                   throws java.io.IOException

Throws:

java.io.IOException

xmlInitializer

private AstNode xmlInitializer()
                        throws java.io.IOException

Throws:

java.io.IOException

argumentList

private java.util.List<AstNode> argumentList()
                                      throws java.io.IOException

Throws:

java.io.IOException

memberExpr

private AstNode memberExpr(boolean allowCallSyntax)
                    throws java.io.IOException

Parse a new-expression, or if next token isn't Token.NEW, a primary expression.

Parameters:

allowCallSyntax - passed down to memberExprTail(boolean, org.htmlunit.corejs.javascript.ast.AstNode)

Throws:

java.io.IOException

memberExprTail

private AstNode memberExprTail(boolean allowCallSyntax,
                               AstNode pn)
                        throws java.io.IOException

Parse any number of "(expr)", "[expr]" ".expr", "..expr", or ".(expr)" constructs trailing the passed expression.

Parameters:

pn - the non-null parent node

Returns:

the outermost (lexically last occurring) expression, which will have the passed parent node as a descendant

Throws:

java.io.IOException

taggedTemplateLiteral

private AstNode taggedTemplateLiteral(AstNode pn)
                               throws java.io.IOException

Throws:

java.io.IOException

propertyAccess

private AstNode propertyAccess(int tt,
                               AstNode pn)
                        throws java.io.IOException

Handles any construct following a "." or ".." operator.

Parameters:

pn - the left-hand side (target) of the operator. Never null.

Returns:

a PropertyGet, XmlMemberGet, or ErrorNode

Throws:

java.io.IOException

attributeAccess

private AstNode attributeAccess()
                         throws java.io.IOException

Xml attribute expression:

@attr, @ns::attr, @ns::*, @ns::*, @*, @*::attr, @*::*, @ns::[expr], @*::[expr], @[expr]

Called if we peeked an '@' token.

Throws:

java.io.IOException

propertyName

private AstNode propertyName(int atPos,
                             int memberTypeFlags)
                      throws java.io.IOException

Check if :: follows name in which case it becomes a qualified name.

Parameters:

atPos - a natural number if we just read an '@' token, else -1

s - the name or string that was matched (an identifier, "throw" or "*").

memberTypeFlags - flags tracking whether we're a '.' or '..' child

Returns:

an XmlRef node if it's an attribute access, a child of a '..' operator, or the name is followed by ::. For a plain name, returns a Name node. Returns an ErrorNode for malformed XML expressions. (For now - might change to return a partial XmlRef.)

Throws:

java.io.IOException

xmlElemRef

private XmlElemRef xmlElemRef(int atPos,
                              Name namespace,
                              int colonPos)
                       throws java.io.IOException

Parse the [expr] portion of an xml element reference, e.g. @[expr], @*::[expr], or ns::[expr].

Throws:

java.io.IOException

destructuringPrimaryExpr

private AstNode destructuringPrimaryExpr()
                                  throws java.io.IOException,
                                         Parser.ParserException

Throws:

java.io.IOException

Parser.ParserException

primaryExpr

private AstNode primaryExpr()
                     throws java.io.IOException

Throws:

java.io.IOException

parenExpr

private AstNode parenExpr()
                   throws java.io.IOException

Throws:

java.io.IOException

name

private AstNode name(int ttFlagged,
                     int tt)
              throws java.io.IOException

Throws:

java.io.IOException

arrayLiteral

private AstNode arrayLiteral()
                      throws java.io.IOException

May return an ArrayLiteral or ArrayComprehension.

Throws:

java.io.IOException

arrayComprehension

private AstNode arrayComprehension(AstNode result,
                                   int pos)
                            throws java.io.IOException

Parse a JavaScript 1.7 Array comprehension.

Parameters:

result - the first expression after the opening left-bracket

pos - start of LB token that begins the array comprehension

Returns:

the array comprehension or an error node

Throws:

java.io.IOException

arrayComprehensionLoop

private ArrayComprehensionLoop arrayComprehensionLoop()
                                               throws java.io.IOException

Throws:

java.io.IOException

generatorExpression

private AstNode generatorExpression(AstNode result,
                                    int pos)
                             throws java.io.IOException

Throws:

java.io.IOException

generatorExpression

private AstNode generatorExpression(AstNode result,
                                    int pos,
                                    boolean inFunctionParams)
                             throws java.io.IOException

Throws:

java.io.IOException

generatorExpressionLoop

private GeneratorExpressionLoop generatorExpressionLoop()
                                                 throws java.io.IOException

Throws:

java.io.IOException

objectLiteral

private ObjectLiteral objectLiteral()
                             throws java.io.IOException

Throws:

java.io.IOException

objliteralProperty

private AstNode objliteralProperty()
                            throws java.io.IOException

Throws:

java.io.IOException

plainProperty

private ObjectProperty plainProperty(AstNode property,
                                     int ptt)
                              throws java.io.IOException

Throws:

java.io.IOException

methodDefinition

private ObjectProperty methodDefinition(int pos,
                                        AstNode propName,
                                        int entryKind)
                                 throws java.io.IOException

Throws:

java.io.IOException

createNameNode

private Name createNameNode()

createNameNode

private Name createNameNode(boolean checkActivation,
                            int token)

Create a Name node using the token info from the last scanned name. In some cases we need to either synthesize a name node, or we lost the name token information by peeking. If the token parameter is not Token.NAME, then we use token info saved in instance vars.

createStringLiteral

private StringLiteral createStringLiteral()

templateLiteral

private AstNode templateLiteral(boolean isTaggedLiteral)
                         throws java.io.IOException

Throws:

java.io.IOException

createTemplateLiteralCharacters

private TemplateCharacters createTemplateLiteralCharacters(int pos)

createNumericLiteral

private AstNode createNumericLiteral(int tt,
                                     boolean isProperty)

checkActivationName

protected void checkActivationName(java.lang.String name,
                                   int token)

setRequiresActivation

protected void setRequiresActivation()

checkCallRequiresActivation

private void checkCallRequiresActivation(AstNode pn)

setIsGenerator

protected void setIsGenerator()

checkBadIncDec

private void checkBadIncDec(UpdateExpression expr)

makeErrorNode

private ErrorNode makeErrorNode()

nodeEnd

private static int nodeEnd(AstNode node)

saveNameTokenData

private void saveNameTokenData(int pos,
                               java.lang.String name,
                               int lineno)

lineBeginningFor

private int lineBeginningFor(int pos)

Return the file offset of the beginning of the input source line containing the passed position.

Parameters:

pos - an offset into the input source stream. If the offset is negative, it's converted to 0, and if it's beyond the end of the source buffer, the last source position is used.

Returns:

the offset of the beginning of the line containing pos (i.e. 1+ the offset of the first preceding newline). Returns -1 if the CompilerEnvirons is not set to ide-mode, and parse(java.io.Reader,String,int) was used.

warnMissingSemi

private void warnMissingSemi(int pos,
                             int end)

warnTrailingComma

private void warnTrailingComma(int pos,
                               java.util.List<?> elems,
                               int commaPos)

createPerFunctionVariables

Parser.PerFunctionVariables createPerFunctionVariables(FunctionNode fnNode)

createDestructuringAssignment

Node createDestructuringAssignment(int type,
                                   Node left,
                                   Node right)

Given a destructuring assignment with a left hand side parsed as an array or object literal and a right hand side expression, rewrite as a series of assignments to the variables defined in left from property accesses to the expression on the right.

Parameters:

type - declaration type: Token.VAR or Token.LET or -1

left - array or object literal containing NAME nodes for variables to assign

right - expression to assign from

Returns:

expression that performs a series of assignments to the variables defined in left

destructuringAssignmentHelper

Node destructuringAssignmentHelper(int variableType,
                                   Node left,
                                   Node right,
                                   java.lang.String tempName)

destructuringArray

boolean destructuringArray(ArrayLiteral array,
                           int variableType,
                           java.lang.String tempName,
                           Node parent,
                           java.util.List<java.lang.String> destructuringNames)

destructuringObject

boolean destructuringObject(ObjectLiteral node,
                            int variableType,
                            java.lang.String tempName,
                            Node parent,
                            java.util.List<java.lang.String> destructuringNames)

createName

protected Node createName(java.lang.String name)

createName

protected Node createName(int type,
                          java.lang.String name,
                          Node child)

createNumber

protected Node createNumber(double number)

createScopeNode

protected Scope createScopeNode(int token,
                                int lineno)

Create a node that can be used to hold lexically scoped variable definitions (via let declarations).

Parameters:

token - the token of the node to create

lineno - line number of source

Returns:

the created node

simpleAssignment

protected Node simpleAssignment(Node left,
                                Node right)

checkMutableReference

protected void checkMutableReference(Node n)

removeParens

protected AstNode removeParens(AstNode node)

markDestructuring

void markDestructuring(AstNode node)

codeBug

private java.lang.RuntimeException codeBug()
                                    throws java.lang.RuntimeException

Throws:

java.lang.RuntimeException

setDefaultUseStrictDirective

public void setDefaultUseStrictDirective(boolean useStrict)

inUseStrictDirective

public boolean inUseStrictDirective()