com.google.gson.internal.bind
Class JsonTreeReader

java.lang.Object
  com.google.gson.stream.JsonReader
      com.google.gson.internal.bind.JsonTreeReader

All Implemented Interfaces:

Closeable

public final class JsonTreeReader
extends JsonReader

This reader walks the elements of a JsonElement as if it was coming from a character stream.

Author:

Jesse Wilson

Constructor Summary

JsonTreeReader(JsonElement element)

Method Summary

void	beginArray() Consumes the next token from the JSON stream and asserts that it is the beginning of a new array.
void	beginObject() Consumes the next token from the JSON stream and asserts that it is the beginning of a new object.
void	close() Closes this JSON reader and the underlying Reader.
void	endArray() Consumes the next token from the JSON stream and asserts that it is the end of the current array.
void	endObject() Consumes the next token from the JSON stream and asserts that it is the end of the current object.
boolean	hasNext() Returns true if the current array or object has another element.
boolean	nextBoolean() Returns the boolean value of the next token, consuming it.
double	nextDouble() Returns the double value of the next token, consuming it.
int	nextInt() Returns the int value of the next token, consuming it.
long	nextLong() Returns the long value of the next token, consuming it.
String	nextName() Returns the next token, a property name, and consumes it.
void	nextNull() Consumes the next token from the JSON stream and asserts that it is a literal null.
String	nextString() Returns the string value of the next token, consuming it.
JsonToken	peek() Returns the type of the next token without consuming it.
void	promoteNameToValue()
void	skipValue() Skips the next value recursively.
String	toString()

Methods inherited from class com.google.gson.stream.JsonReader

isLenient, setLenient

Methods inherited from class java.lang.Object

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

Constructor Detail

JsonTreeReader

public JsonTreeReader(JsonElement element)

Method Detail

beginArray

public void beginArray()
                throws IOException

Description copied from class: JsonReader

Consumes the next token from the JSON stream and asserts that it is the beginning of a new array.

Overrides:

beginArray in class JsonReader

Throws:

IOException

endArray

public void endArray()
              throws IOException

Description copied from class: JsonReader

Consumes the next token from the JSON stream and asserts that it is the end of the current array.

Overrides:

endArray in class JsonReader

Throws:

IOException

beginObject

public void beginObject()
                 throws IOException

Description copied from class: JsonReader

Consumes the next token from the JSON stream and asserts that it is the beginning of a new object.

Overrides:

beginObject in class JsonReader

Throws:

IOException

endObject

public void endObject()
               throws IOException

Description copied from class: JsonReader

Consumes the next token from the JSON stream and asserts that it is the end of the current object.

Overrides:

endObject in class JsonReader

Throws:

IOException

hasNext

public boolean hasNext()
                throws IOException

Description copied from class: JsonReader

Returns true if the current array or object has another element.

Overrides:

hasNext in class JsonReader

Throws:

IOException

peek

public JsonToken peek()
               throws IOException

Description copied from class: JsonReader

Returns the type of the next token without consuming it.

Overrides:

peek in class JsonReader

Throws:

IOException

nextName

public String nextName()
                throws IOException

Description copied from class: JsonReader

Returns the next token, a property name, and consumes it.

Overrides:

nextName in class JsonReader

Throws:

IOException - if the next token in the stream is not a property name.

nextString

public String nextString()
                  throws IOException

Description copied from class: JsonReader

Returns the string value of the next token, consuming it. If the next token is a number, this method will return its string form.

Overrides:

nextString in class JsonReader

Throws:

IOException

nextBoolean

public boolean nextBoolean()
                    throws IOException

Description copied from class: JsonReader

Returns the boolean value of the next token, consuming it.

Overrides:

nextBoolean in class JsonReader

Throws:

IOException

nextNull

public void nextNull()
              throws IOException

Description copied from class: JsonReader

Consumes the next token from the JSON stream and asserts that it is a literal null.

Overrides:

nextNull in class JsonReader

Throws:

IOException

nextDouble

public double nextDouble()
                  throws IOException

Description copied from class: JsonReader

Returns the double value of the next token, consuming it. If the next token is a string, this method will attempt to parse it as a double using Double.parseDouble(String).

Overrides:

nextDouble in class JsonReader

Throws:

IOException

nextLong

public long nextLong()
              throws IOException

Description copied from class: JsonReader

Returns the long value of the next token, consuming it. If the next token is a string, this method will attempt to parse it as a long. If the next token's numeric value cannot be exactly represented by a Java long, this method throws.

Overrides:

nextLong in class JsonReader

Throws:

IOException

nextInt

public int nextInt()
            throws IOException

Description copied from class: JsonReader

Returns the int value of the next token, consuming it. If the next token is a string, this method will attempt to parse it as an int. If the next token's numeric value cannot be exactly represented by a Java int, this method throws.

Overrides:

nextInt in class JsonReader

Throws:

IOException

close

public void close()
           throws IOException

Description copied from class: JsonReader

Closes this JSON reader and the underlying Reader.

Specified by:

close in interface Closeable

Overrides:

close in class JsonReader

Throws:

IOException

skipValue

public void skipValue()
               throws IOException

Description copied from class: JsonReader

Skips the next value recursively. If it is an object or array, all nested elements are skipped. This method is intended for use when the JSON token stream contains unrecognized or unhandled values.

Overrides:

skipValue in class JsonReader

Throws:

IOException

toString

public String toString()

Overrides:

toString in class JsonReader

promoteNameToValue

public void promoteNameToValue()
                        throws IOException

Throws:

IOException