Class Lexer
java.lang.Object
com.fasterxml.jackson.dataformat.toml.Lexer
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Field Summary
FieldsModifier and TypeFieldDescriptionstatic final int
private final TomlStreamReadException.ErrorContext
static final int
static final int
static final int
static final int
static final int
static final int
private final com.fasterxml.jackson.core.io.IOContext
static final int
static final int
static final int
private int
(package private) boolean
private boolean
private final com.fasterxml.jackson.core.StreamReadConstraints
(package private) final com.fasterxml.jackson.core.util.TextBuffer
private boolean
private long
Number of characters up to the start of the matched text.private int
Number of characters from the last newline up to the start of the matched text.static final int
This character denotes the end of file.static final int
private int
Number of newlines encountered up to the start of the matched text.private static final int[]
Translates DFA states to action switch labels.private static final String
private static final int[]
ZZ_ATTRIBUTE[aState] contains the attributes of stateaState
private static final String
private static final int
Initial size of the lookahead buffer.private static final int[]
Second-level tables for translating characters to character classesprivate static final String
private static final int[]
Top-level table for translating characters to character classesprivate static final String
private static final String[]
private static final int[]
ZZ_LEXSTATE[l] is the state in the DFA for the lexical state l ZZ_LEXSTATE[l+1] is the state in the DFA for the lexical state l at the beginning of a line l is of the form l = 2*k, k a non negative integerprivate static final int
Error code for "could not match input".private static final int
Error code for "pushback value was too large".private static final int[]
Translates a state to a row index in the transition tableprivate static final String
private static final int[]
The transition table of the DFAprivate static final String
private static final int
Error code for "Unknown internal scanner error".private boolean
Whether the scanner is currently at the beginning of a line.private boolean
Whether the scanner is at the end of file.private char[]
This buffer contains the current text to be matched and is the source of theyytext()
string.private int
Current text position in the buffer.private int
Marks the last character in the buffer, that has been read from input.private boolean
Whether the user-EOF-code has already been executed.private int
private int
Current lexical state.private int
Text position at the last accepting state.private Reader
Input device.private int
Marks the beginning of theyytext()
string in the buffer.private int
Current state of the DFA. -
Constructor Summary
ConstructorsConstructorDescriptionLexer
(Reader in, com.fasterxml.jackson.core.io.IOContext ioContext, TomlStreamReadException.ErrorContext errorContext) Creates a new scanner -
Method Summary
Modifier and TypeMethodDescriptionprivate void
private void
private void
private void
(package private) long
(package private) int
(package private) int
getLine()
int
(package private) char[]
(package private) int
(package private) int
void
private void
private void
final boolean
yyatEOF()
Returns whether the scanner has reached the end of the reader it reads from.final void
yybegin
(int newState) Enters a new lexical state.final char
yycharat
(int position) Returns the character at the given position from the matched text.final void
yyclose()
Closes the input reader.final int
yylength()
How many characters were matched.yylex()
Resumes scanning until the next regular expression is matched, the end of input is encountered or an I/O-Error occurs.void
yypushback
(int number) Pushes the specified amount of characters back into the input stream.private final void
Resets the input position.final int
yystate()
Returns the current lexical state.final String
yytext()
Returns the text matched by the current regular expression.private boolean
Whether the scanner buffer can grow to accommodate a larger token.private static int
zzCMap
(int input) Translates raw input code points to DFA table rowprivate int
Returns the maximum size of the scanner buffer, which limits the size of tokens.private boolean
zzRefill()
Refills the input buffer.private static void
zzScanError
(int errorCode) Reports an error that occurred while scanning.private static int[]
private static int
zzUnpackAction
(String packed, int offset, int[] result) private static int[]
private static int
zzUnpackAttribute
(String packed, int offset, int[] result) private static int[]
private static int
zzUnpackcmap_blocks
(String packed, int offset, int[] result) private static int[]
private static int
zzUnpackcmap_top
(String packed, int offset, int[] result) private static int[]
private static int
zzUnpackRowMap
(String packed, int offset, int[] result) private static int[]
private static int
zzUnpacktrans
(String packed, int offset, int[] result)
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Field Details
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YYEOF
public static final int YYEOFThis character denotes the end of file.- See Also:
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ZZ_BUFFERSIZE
private static final int ZZ_BUFFERSIZEInitial size of the lookahead buffer.- See Also:
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YYINITIAL
public static final int YYINITIAL- See Also:
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EXPECT_EXPRESSION
public static final int EXPECT_EXPRESSION- See Also:
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EXPECT_INLINE_KEY
public static final int EXPECT_INLINE_KEY- See Also:
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EXPECT_VALUE
public static final int EXPECT_VALUE- See Also:
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EXPECT_EOL
public static final int EXPECT_EOL- See Also:
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EXPECT_ARRAY_SEP
public static final int EXPECT_ARRAY_SEP- See Also:
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EXPECT_TABLE_SEP
public static final int EXPECT_TABLE_SEP- See Also:
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ML_BASIC_STRING
public static final int ML_BASIC_STRING- See Also:
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BASIC_STRING
public static final int BASIC_STRING- See Also:
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ML_LITERAL_STRING
public static final int ML_LITERAL_STRING- See Also:
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LITERAL_STRING
public static final int LITERAL_STRING- See Also:
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ZZ_LEXSTATE
private static final int[] ZZ_LEXSTATEZZ_LEXSTATE[l] is the state in the DFA for the lexical state l ZZ_LEXSTATE[l+1] is the state in the DFA for the lexical state l at the beginning of a line l is of the form l = 2*k, k a non negative integer -
ZZ_CMAP_TOP
private static final int[] ZZ_CMAP_TOPTop-level table for translating characters to character classes -
ZZ_CMAP_TOP_PACKED_0
- See Also:
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ZZ_CMAP_BLOCKS
private static final int[] ZZ_CMAP_BLOCKSSecond-level tables for translating characters to character classes -
ZZ_CMAP_BLOCKS_PACKED_0
- See Also:
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ZZ_ACTION
private static final int[] ZZ_ACTIONTranslates DFA states to action switch labels. -
ZZ_ACTION_PACKED_0
- See Also:
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ZZ_ROWMAP
private static final int[] ZZ_ROWMAPTranslates a state to a row index in the transition table -
ZZ_ROWMAP_PACKED_0
- See Also:
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ZZ_TRANS
private static final int[] ZZ_TRANSThe transition table of the DFA -
ZZ_TRANS_PACKED_0
- See Also:
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ZZ_UNKNOWN_ERROR
private static final int ZZ_UNKNOWN_ERRORError code for "Unknown internal scanner error".- See Also:
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ZZ_NO_MATCH
private static final int ZZ_NO_MATCHError code for "could not match input".- See Also:
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ZZ_PUSHBACK_2BIG
private static final int ZZ_PUSHBACK_2BIGError code for "pushback value was too large".- See Also:
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ZZ_ERROR_MSG
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ZZ_ATTRIBUTE
private static final int[] ZZ_ATTRIBUTEZZ_ATTRIBUTE[aState] contains the attributes of stateaState
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ZZ_ATTRIBUTE_PACKED_0
- See Also:
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zzReader
Input device. -
zzState
private int zzStateCurrent state of the DFA. -
zzLexicalState
private int zzLexicalStateCurrent lexical state. -
zzBuffer
private char[] zzBufferThis buffer contains the current text to be matched and is the source of theyytext()
string. -
zzMarkedPos
private int zzMarkedPosText position at the last accepting state. -
zzCurrentPos
private int zzCurrentPosCurrent text position in the buffer. -
zzStartRead
private int zzStartReadMarks the beginning of theyytext()
string in the buffer. -
zzEndRead
private int zzEndReadMarks the last character in the buffer, that has been read from input. -
zzAtEOF
private boolean zzAtEOFWhether the scanner is at the end of file.- See Also:
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zzFinalHighSurrogate
private int zzFinalHighSurrogate -
yyline
private int yylineNumber of newlines encountered up to the start of the matched text. -
yycolumn
private int yycolumnNumber of characters from the last newline up to the start of the matched text. -
yychar
private long yycharNumber of characters up to the start of the matched text. -
zzAtBOL
private boolean zzAtBOLWhether the scanner is currently at the beginning of a line. -
zzEOFDone
private boolean zzEOFDoneWhether the user-EOF-code has already been executed. -
ioContext
private final com.fasterxml.jackson.core.io.IOContext ioContext -
errorContext
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prohibitInternalBufferAllocate
boolean prohibitInternalBufferAllocate -
releaseTokenBuffer
private boolean releaseTokenBuffer -
trimmedNewline
private boolean trimmedNewline -
textBuffer
final com.fasterxml.jackson.core.util.TextBuffer textBuffer -
streamReadConstraints
private final com.fasterxml.jackson.core.StreamReadConstraints streamReadConstraints -
nestingDepth
private int nestingDepth
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Constructor Details
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Lexer
Lexer(Reader in, com.fasterxml.jackson.core.io.IOContext ioContext, TomlStreamReadException.ErrorContext errorContext) Creates a new scanner- Parameters:
in
- the java.io.Reader to read input from.
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Method Details
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zzUnpackcmap_top
private static int[] zzUnpackcmap_top() -
zzUnpackcmap_top
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zzUnpackcmap_blocks
private static int[] zzUnpackcmap_blocks() -
zzUnpackcmap_blocks
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zzUnpackAction
private static int[] zzUnpackAction() -
zzUnpackAction
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zzUnpackRowMap
private static int[] zzUnpackRowMap() -
zzUnpackRowMap
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zzUnpacktrans
private static int[] zzUnpacktrans() -
zzUnpacktrans
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zzUnpackAttribute
private static int[] zzUnpackAttribute() -
zzUnpackAttribute
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requestLargerBuffer
- Throws:
TomlStreamReadException
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releaseBuffers
public void releaseBuffers() -
getNestingDepth
public int getNestingDepth() -
startString
private void startString() -
appendNormalTextToken
- Throws:
IOException
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appendNewlineWithPossibleTrim
- Throws:
IOException
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appendUnicodeEscapeShort
- Throws:
IOException
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appendUnicodeEscapeLong
- Throws:
IOException
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getLine
int getLine() -
getColumn
int getColumn() -
getCharPos
long getCharPos() -
getTextBuffer
char[] getTextBuffer() -
getTextBufferStart
int getTextBufferStart() -
getTextBufferEnd
int getTextBufferEnd() -
zzMaxBufferLen
private int zzMaxBufferLen()Returns the maximum size of the scanner buffer, which limits the size of tokens. -
zzCanGrow
private boolean zzCanGrow()Whether the scanner buffer can grow to accommodate a larger token. -
zzCMap
private static int zzCMap(int input) Translates raw input code points to DFA table row -
zzRefill
Refills the input buffer.- Returns:
false
iff there was new input.- Throws:
IOException
- if any I/O-Error occurs
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yyclose
Closes the input reader.- Throws:
IOException
- if the reader could not be closed.
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yyResetPosition
private final void yyResetPosition()Resets the input position. -
yyatEOF
public final boolean yyatEOF()Returns whether the scanner has reached the end of the reader it reads from.- Returns:
- whether the scanner has reached EOF.
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yystate
public final int yystate()Returns the current lexical state.- Returns:
- the current lexical state.
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yybegin
public final void yybegin(int newState) Enters a new lexical state.- Parameters:
newState
- the new lexical state
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yytext
Returns the text matched by the current regular expression.- Returns:
- the matched text.
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yycharat
public final char yycharat(int position) Returns the character at the given position from the matched text.It is equivalent to
yytext().charAt(pos)
, but faster.- Parameters:
position
- the position of the character to fetch. A value from 0 toyylength()-1
.- Returns:
- the character at
position
.
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yylength
public final int yylength()How many characters were matched.- Returns:
- the length of the matched text region.
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zzScanError
private static void zzScanError(int errorCode) Reports an error that occurred while scanning.In a well-formed scanner (no or only correct usage of
yypushback(int)
and a match-all fallback rule) this method will only be called with things that "Can't Possibly Happen".If this method is called, something is seriously wrong (e.g. a JFlex bug producing a faulty scanner etc.).
Usual syntax/scanner level error handling should be done in error fallback rules.
- Parameters:
errorCode
- the code of the error message to display.
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yypushback
public void yypushback(int number) Pushes the specified amount of characters back into the input stream.They will be read again by then next call of the scanning method.
- Parameters:
number
- the number of characters to be read again. This number must not be greater thanyylength()
.
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yylex
Resumes scanning until the next regular expression is matched, the end of input is encountered or an I/O-Error occurs.- Returns:
- the next token.
- Throws:
IOException
- if any I/O-Error occurs.
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