Package org.mozilla.javascript

Class Parser

java.lang.Object

org.mozilla.javascript.Parser

Direct Known Subclasses:

IRFactory

public class Parser
extends 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

Field Summary

Fields

Modifier and Type	Field	Description
static final int	ARGC_LIMIT	Maximum number of allowed function or constructor arguments, to follow SpiderMonkey.

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
boolean	eof()
AstRoot	parse(Reader sourceReader, String sourceURI, int lineno)	Builds a parse tree from the given sourcereader.
AstRoot	parse(String sourceString, String sourceURI, int lineno)	Builds a parse tree from the given source string.

Methods inherited from class java.lang.Object

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

Field Details

ARGC_LIMIT

public static final int ARGC_LIMIT

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

See Also:

• Constant Field Values

Constructor Details

Parser

public Parser()

Parser

public Parser(CompilerEnvirons compilerEnv)

Parser

public Parser(CompilerEnvirons compilerEnv,
 ErrorReporter errorReporter)

Method Details

eof

public boolean eof()

parse

public AstRoot parse(String sourceString,
 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

public AstRoot parse(Reader sourceReader,
 String sourceURI,
 int lineno)
              throws IOException

Builds a parse tree from the given sourcereader.

Throws:

IOException - if the Reader encounters an error

See Also:

• parse(String,String,int)