Module com.grack.nanojson

Package com.grack.nanojson

Class JsonReader

java.lang.Object

com.grack.nanojson.JsonReader

public final class JsonReader
extends Object

Streaming reader for JSON documents.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	JsonReader.Type	The type of value that the JsonReader is positioned over.

Method Summary

Modifier and Type	Method	Description
void	array()	Starts reading an array at the current value.
boolean	bool()	Parses the current value as a boolean.
JsonReader.Type	current()	Returns the current type of the value.
double	doubleVal()	Parses the current value as a double.
float	floatVal()	Parses the current value as a float.
static JsonReader	from(InputStream in)	Create a JsonReader from an InputStream.
static JsonReader	from(String s)	Create a JsonReader from a String.
int	intVal()	Parses the current value as an integer.
String	key()	Reads the key for the object at the current value.
long	longVal()	Parses the current value as a long.
boolean	next()	Advance to the next value in this array or object.
void	nul()	Parses the current value as a null.
Number	number()	Parses the current value as a Number.
void	object()	Starts reading an object at the current value.
boolean	pop()	Returns to the array or object structure above the current one, and advances to the next key or value.
String	string()	Parses the current value as a string.
Object	value()	Returns the current value.

Methods inherited from class java.lang.Object

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

Method Details

from

public static JsonReader from(InputStream in)
                       throws JsonParserException

Create a JsonReader from an InputStream.

Throws:

JsonParserException

from

public static JsonReader from(String s)
                       throws JsonParserException

Create a JsonReader from a String.

Throws:

JsonParserException

pop

public boolean pop()
            throws JsonParserException

Returns to the array or object structure above the current one, and advances to the next key or value.

Throws:

JsonParserException

current

public JsonReader.Type current()
                        throws JsonParserException

Returns the current type of the value.

Throws:

JsonParserException

object

public void object()
            throws JsonParserException

Starts reading an object at the current value.

Throws:

JsonParserException

key

public String key()
           throws JsonParserException

Reads the key for the object at the current value. Does not advance to the next value.

Throws:

JsonParserException

array

public void array()
           throws JsonParserException

Starts reading an array at the current value.

Throws:

JsonParserException

value

public Object value()
             throws JsonParserException

Returns the current value.

Throws:

JsonParserException

nul

public void nul()
         throws JsonParserException

Parses the current value as a null.

Throws:

JsonParserException

string

public String string()
              throws JsonParserException

Parses the current value as a string.

Throws:

JsonParserException

bool

public boolean bool()
             throws JsonParserException

Parses the current value as a boolean.

Throws:

JsonParserException

number

public Number number()
              throws JsonParserException

Parses the current value as a Number.

Throws:

JsonParserException

longVal

public long longVal()
             throws JsonParserException

Parses the current value as a long.

Throws:

JsonParserException

intVal

public int intVal()
           throws JsonParserException

Parses the current value as an integer.

Throws:

JsonParserException

floatVal

public float floatVal()
               throws JsonParserException

Parses the current value as a float.

Throws:

JsonParserException

doubleVal

public double doubleVal()
                 throws JsonParserException

Parses the current value as a double.

Throws:

JsonParserException

next

public boolean next()
             throws JsonParserException

Advance to the next value in this array or object. If no values remain, return to the parent array or object.

Returns:

true if we still have values to read in this array or object, false if we have completed this object (and implicitly moved back to the parent array or object)

Throws:

JsonParserException