Class Parser

  • Direct Known Subclasses:
    IRFactory

    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
    • 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
    • Method Detail

      • eof

        public boolean eof()
      • 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)
      • setDefaultUseStrictDirective

        public void setDefaultUseStrictDirective​(boolean useStrict)
      • inUseStrictDirective

        public boolean inUseStrictDirective()