Package groovy.json

Class JsonLexer

  • All Implemented Interfaces:
    java.util.Iterator<JsonToken>
    public class JsonLexer
extends java.lang.Object
implements java.util.Iterator<JsonToken>
    The lexer reads JSON tokens in a streaming fashion from the underlying reader.
    Since:
    1.8.0

    • Constructor Summary

      Constructors 
      Constructor Description
      JsonLexer​(java.io.Reader reader)
      Instantiates a lexer with a reader from which to read JSON tokens.

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      LineColumnReader getReader()
      Underlying reader from which to read the JSON tokens.
      boolean hasNext()
      Iterator method to know if another token follows, or if we've reached the end of the stream.
      JsonToken next()
      Iterator method to get the next token of the stream.
      JsonToken nextToken()  
      void remove()
      Method not implemented.
      int skipWhitespace()
      Skips all the whitespace characters and moves the cursor to the next non-space character.
      static java.lang.String unescape​(java.lang.String input)
      Replace unicode escape and other control characters with real characters

      • Methods inherited from class java.lang.Object

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

      • Methods inherited from interface java.util.Iterator

        forEachRemaining

    • Constructor Detail

      • JsonLexer

        public JsonLexer​(java.io.Reader reader)
        Instantiates a lexer with a reader from which to read JSON tokens. Under the hood, the reader is wrapped in a LineColumnReader, for line and column information, unless it's already an instance of that class.
        Parameters:
        reader - underlying reader

    • Method Detail

      • getReader

        public LineColumnReader getReader()
        Underlying reader from which to read the JSON tokens. This reader is an instance of LineColumnReader, to keep track of line and column positions.

      • nextToken

        public JsonToken nextToken()
        Returns:
        the next token from the stream

      • unescape

        public static java.lang.String unescape​(java.lang.String input)
        Replace unicode escape and other control characters with real characters
        Parameters:
        input - text
        Returns:
        input text without the escaping

      • skipWhitespace

        public int skipWhitespace()
        Skips all the whitespace characters and moves the cursor to the next non-space character.

      • hasNext

        public boolean hasNext()
        Iterator method to know if another token follows, or if we've reached the end of the stream.
        Specified by:
        hasNext in interface java.util.Iterator<JsonToken>
        Returns:
        true if there are more tokens

      • next

        public JsonToken next()
        Iterator method to get the next token of the stream.
        Specified by:
        next in interface java.util.Iterator<JsonToken>
        Returns:
        the next token

      • remove

        public void remove()
        Method not implemented.
        Specified by:
        remove in interface java.util.Iterator<JsonToken>
        Throws:
        java.lang.UnsupportedOperationException