org.apache.jackrabbit.oak.commons.json

Interface JsopReader

All Known Implementing Classes:

JsopStream, JsopTokenizer

public interface JsopReader

A reader for Json and Jsop strings.

Field Summary

Fields

Modifier and Type	Field and Description
static int	COMMENT The token type of a comment, if supported by the reader.
static int	END The token type that signals the end of the stream.
static int	ERROR The token type of a parse error.
static int	FALSE The token type of the value "false".
static int	IDENTIFIER The token type of an identifier (an unquoted string), if supported by the reader.
static int	NULL The token type of "null".
static int	NUMBER The token type of a number value.
static int	STRING The token type of a string value.
static int	TRUE The token type of the value "true".

Method Summary

Modifier and Type	Method and Description
@Nullable java.lang.String	getToken() Get the last token value if the the token type was STRING or NUMBER.
int	getTokenType() Get the token type of the last token.
boolean	matches(int type) Read a token which must match a given token type.
int	read() Read a token and return the token type.
java.lang.String	read(int type) Read a token which must match a given token type.
@Nullable java.lang.String	readRawValue() Return the row (escaped) token.
@Nullable java.lang.String	readString() Read a string.
void	resetReader() Reset the position to 0, so that to restart reading.

Field Detail

END

static final int END

The token type that signals the end of the stream.

See Also:

Constant Field Values

STRING

static final int STRING

The token type of a string value.

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Constant Field Values

NUMBER

static final int NUMBER

The token type of a number value.

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Constant Field Values

TRUE

static final int TRUE

The token type of the value "true".

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Constant Field Values

FALSE

static final int FALSE

The token type of the value "false".

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Constant Field Values

NULL

static final int NULL

The token type of "null".

See Also:

Constant Field Values

ERROR

static final int ERROR

The token type of a parse error.

See Also:

Constant Field Values

IDENTIFIER

static final int IDENTIFIER

The token type of an identifier (an unquoted string), if supported by the reader.

See Also:

Constant Field Values

COMMENT

static final int COMMENT

The token type of a comment, if supported by the reader.

See Also:

Constant Field Values

Method Detail

read

java.lang.String read(int type)

Read a token which must match a given token type.

Parameters:

type - the token type

Returns:

the token (null when reading a null value)

Throws:

java.lang.IllegalStateException - if the token type doesn't match

readString

@Nullable
@Nullable java.lang.String readString()

Read a string.

Returns:

the de-escaped string (null when reading a null value)

Throws:

java.lang.IllegalStateException - if the token type doesn't match

read

int read()

Read a token and return the token type.

Returns:

the token type

matches

boolean matches(int type)

Read a token which must match a given token type.

Parameters:

type - the token type

Returns:

true if there was a match

readRawValue

@Nullable
@Nullable java.lang.String readRawValue()

Return the row (escaped) token.

Returns:

the escaped string (null when reading a null value)

getToken

@Nullable
@Nullable java.lang.String getToken()

Get the last token value if the the token type was STRING or NUMBER. For STRING, the text is decoded; for NUMBER, it is returned as parsed. In all other cases the result is undefined.

Returns:

the token

getTokenType

int getTokenType()

Get the token type of the last token. The token type is one of the known types (END, STRING, NUMBER,...), or, for Jsop tags such as "+", "-", it is the Unicode character code of the tag.

Returns:

the token type

resetReader

void resetReader()

Reset the position to 0, so that to restart reading.