Class Lexer
- java.lang.Object
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- com.fasterxml.jackson.dataformat.toml.Lexer
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class Lexer extends java.lang.Object
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Field Summary
Fields Modifier and Type Field Description static int
BASIC_STRING
private TomlStreamReadException.ErrorContext
errorContext
static int
EXPECT_ARRAY_SEP
static int
EXPECT_EOL
static int
EXPECT_EXPRESSION
static int
EXPECT_INLINE_KEY
static int
EXPECT_TABLE_SEP
static int
EXPECT_VALUE
private com.fasterxml.jackson.core.io.IOContext
ioContext
static int
LITERAL_STRING
static int
ML_BASIC_STRING
static int
ML_LITERAL_STRING
private int
nestingDepth
(package private) boolean
prohibitInternalBufferAllocate
private boolean
releaseTokenBuffer
private com.fasterxml.jackson.core.StreamReadConstraints
streamReadConstraints
(package private) com.fasterxml.jackson.core.util.TextBuffer
textBuffer
private boolean
trimmedNewline
private long
yychar
Number of characters up to the start of the matched text.private int
yycolumn
Number of characters from the last newline up to the start of the matched text.static int
YYEOF
This character denotes the end of file.static int
YYINITIAL
private int
yyline
Number of newlines encountered up to the start of the matched text.private static int[]
ZZ_ACTION
Translates DFA states to action switch labels.private static java.lang.String
ZZ_ACTION_PACKED_0
private static int[]
ZZ_ATTRIBUTE
ZZ_ATTRIBUTE[aState] contains the attributes of stateaState
private static java.lang.String
ZZ_ATTRIBUTE_PACKED_0
private static int
ZZ_BUFFERSIZE
Initial size of the lookahead buffer.private static int[]
ZZ_CMAP_BLOCKS
Second-level tables for translating characters to character classesprivate static java.lang.String
ZZ_CMAP_BLOCKS_PACKED_0
private static int[]
ZZ_CMAP_TOP
Top-level table for translating characters to character classesprivate static java.lang.String
ZZ_CMAP_TOP_PACKED_0
private static java.lang.String[]
ZZ_ERROR_MSG
private static int[]
ZZ_LEXSTATE
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 int
ZZ_NO_MATCH
Error code for "could not match input".private static int
ZZ_PUSHBACK_2BIG
Error code for "pushback value was too large".private static int[]
ZZ_ROWMAP
Translates a state to a row index in the transition tableprivate static java.lang.String
ZZ_ROWMAP_PACKED_0
private static int[]
ZZ_TRANS
The transition table of the DFAprivate static java.lang.String
ZZ_TRANS_PACKED_0
private static int
ZZ_UNKNOWN_ERROR
Error code for "Unknown internal scanner error".private boolean
zzAtBOL
Whether the scanner is currently at the beginning of a line.private boolean
zzAtEOF
Whether the scanner is at the end of file.private char[]
zzBuffer
This buffer contains the current text to be matched and is the source of theyytext()
string.private int
zzCurrentPos
Current text position in the buffer.private int
zzEndRead
Marks the last character in the buffer, that has been read from input.private boolean
zzEOFDone
Whether the user-EOF-code has already been executed.private int
zzFinalHighSurrogate
private int
zzLexicalState
Current lexical state.private int
zzMarkedPos
Text position at the last accepting state.private java.io.Reader
zzReader
Input device.private int
zzStartRead
Marks the beginning of theyytext()
string in the buffer.private int
zzState
Current state of the DFA.
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Constructor Summary
Constructors Constructor Description Lexer(java.io.Reader in, com.fasterxml.jackson.core.io.IOContext ioContext, TomlStreamReadException.ErrorContext errorContext)
Creates a new scanner
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description private void
appendNewlineWithPossibleTrim()
private void
appendNormalTextToken()
private void
appendUnicodeEscapeLong()
private void
appendUnicodeEscapeShort()
(package private) long
getCharPos()
(package private) int
getColumn()
(package private) int
getLine()
int
getNestingDepth()
(package private) char[]
getTextBuffer()
(package private) int
getTextBufferEnd()
(package private) int
getTextBufferStart()
void
releaseBuffers()
private void
requestLargerBuffer()
private void
startString()
boolean
yyatEOF()
Returns whether the scanner has reached the end of the reader it reads from.void
yybegin(int newState)
Enters a new lexical state.char
yycharat(int position)
Returns the character at the given position from the matched text.void
yyclose()
Closes the input reader.int
yylength()
How many characters were matched.TomlToken
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 void
yyResetPosition()
Resets the input position.int
yystate()
Returns the current lexical state.java.lang.String
yytext()
Returns the text matched by the current regular expression.private boolean
zzCanGrow()
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
zzMaxBufferLen()
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[]
zzUnpackAction()
private static int
zzUnpackAction(java.lang.String packed, int offset, int[] result)
private static int[]
zzUnpackAttribute()
private static int
zzUnpackAttribute(java.lang.String packed, int offset, int[] result)
private static int[]
zzUnpackcmap_blocks()
private static int
zzUnpackcmap_blocks(java.lang.String packed, int offset, int[] result)
private static int[]
zzUnpackcmap_top()
private static int
zzUnpackcmap_top(java.lang.String packed, int offset, int[] result)
private static int[]
zzUnpackRowMap()
private static int
zzUnpackRowMap(java.lang.String packed, int offset, int[] result)
private static int[]
zzUnpacktrans()
private static int
zzUnpacktrans(java.lang.String packed, int offset, int[] result)
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Field Detail
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YYEOF
public static final int YYEOF
This character denotes the end of file.- See Also:
- Constant Field Values
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ZZ_BUFFERSIZE
private static final int ZZ_BUFFERSIZE
Initial size of the lookahead buffer.- See Also:
- Constant Field Values
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YYINITIAL
public static final int YYINITIAL
- See Also:
- Constant Field Values
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EXPECT_EXPRESSION
public static final int EXPECT_EXPRESSION
- See Also:
- Constant Field Values
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EXPECT_INLINE_KEY
public static final int EXPECT_INLINE_KEY
- See Also:
- Constant Field Values
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EXPECT_VALUE
public static final int EXPECT_VALUE
- See Also:
- Constant Field Values
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EXPECT_EOL
public static final int EXPECT_EOL
- See Also:
- Constant Field Values
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EXPECT_ARRAY_SEP
public static final int EXPECT_ARRAY_SEP
- See Also:
- Constant Field Values
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EXPECT_TABLE_SEP
public static final int EXPECT_TABLE_SEP
- See Also:
- Constant Field Values
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ML_BASIC_STRING
public static final int ML_BASIC_STRING
- See Also:
- Constant Field Values
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BASIC_STRING
public static final int BASIC_STRING
- See Also:
- Constant Field Values
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ML_LITERAL_STRING
public static final int ML_LITERAL_STRING
- See Also:
- Constant Field Values
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LITERAL_STRING
public static final int LITERAL_STRING
- See Also:
- Constant Field Values
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ZZ_LEXSTATE
private static final int[] ZZ_LEXSTATE
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 integer
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ZZ_CMAP_TOP
private static final int[] ZZ_CMAP_TOP
Top-level table for translating characters to character classes
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ZZ_CMAP_TOP_PACKED_0
private static final java.lang.String ZZ_CMAP_TOP_PACKED_0
- See Also:
- Constant Field Values
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ZZ_CMAP_BLOCKS
private static final int[] ZZ_CMAP_BLOCKS
Second-level tables for translating characters to character classes
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ZZ_CMAP_BLOCKS_PACKED_0
private static final java.lang.String ZZ_CMAP_BLOCKS_PACKED_0
- See Also:
- Constant Field Values
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ZZ_ACTION
private static final int[] ZZ_ACTION
Translates DFA states to action switch labels.
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ZZ_ACTION_PACKED_0
private static final java.lang.String ZZ_ACTION_PACKED_0
- See Also:
- Constant Field Values
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ZZ_ROWMAP
private static final int[] ZZ_ROWMAP
Translates a state to a row index in the transition table
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ZZ_ROWMAP_PACKED_0
private static final java.lang.String ZZ_ROWMAP_PACKED_0
- See Also:
- Constant Field Values
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ZZ_TRANS
private static final int[] ZZ_TRANS
The transition table of the DFA
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ZZ_TRANS_PACKED_0
private static final java.lang.String ZZ_TRANS_PACKED_0
- See Also:
- Constant Field Values
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ZZ_UNKNOWN_ERROR
private static final int ZZ_UNKNOWN_ERROR
Error code for "Unknown internal scanner error".- See Also:
- Constant Field Values
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ZZ_NO_MATCH
private static final int ZZ_NO_MATCH
Error code for "could not match input".- See Also:
- Constant Field Values
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ZZ_PUSHBACK_2BIG
private static final int ZZ_PUSHBACK_2BIG
Error code for "pushback value was too large".- See Also:
- Constant Field Values
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ZZ_ERROR_MSG
private static final java.lang.String[] ZZ_ERROR_MSG
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ZZ_ATTRIBUTE
private static final int[] ZZ_ATTRIBUTE
ZZ_ATTRIBUTE[aState] contains the attributes of stateaState
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ZZ_ATTRIBUTE_PACKED_0
private static final java.lang.String ZZ_ATTRIBUTE_PACKED_0
- See Also:
- Constant Field Values
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zzReader
private java.io.Reader zzReader
Input device.
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zzState
private int zzState
Current state of the DFA.
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zzLexicalState
private int zzLexicalState
Current lexical state.
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zzBuffer
private char[] zzBuffer
This buffer contains the current text to be matched and is the source of theyytext()
string.
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zzMarkedPos
private int zzMarkedPos
Text position at the last accepting state.
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zzCurrentPos
private int zzCurrentPos
Current text position in the buffer.
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zzStartRead
private int zzStartRead
Marks the beginning of theyytext()
string in the buffer.
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zzEndRead
private int zzEndRead
Marks the last character in the buffer, that has been read from input.
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zzAtEOF
private boolean zzAtEOF
Whether the scanner is at the end of file.- See Also:
yyatEOF()
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zzFinalHighSurrogate
private int zzFinalHighSurrogate
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yyline
private int yyline
Number of newlines encountered up to the start of the matched text.
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yycolumn
private int yycolumn
Number of characters from the last newline up to the start of the matched text.
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yychar
private long yychar
Number of characters up to the start of the matched text.
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zzAtBOL
private boolean zzAtBOL
Whether the scanner is currently at the beginning of a line.
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zzEOFDone
private boolean zzEOFDone
Whether the user-EOF-code has already been executed.
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ioContext
private final com.fasterxml.jackson.core.io.IOContext ioContext
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errorContext
private final TomlStreamReadException.ErrorContext errorContext
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prohibitInternalBufferAllocate
boolean prohibitInternalBufferAllocate
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releaseTokenBuffer
private boolean releaseTokenBuffer
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trimmedNewline
private boolean trimmedNewline
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textBuffer
final com.fasterxml.jackson.core.util.TextBuffer textBuffer
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streamReadConstraints
private final com.fasterxml.jackson.core.StreamReadConstraints streamReadConstraints
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nestingDepth
private int nestingDepth
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Constructor Detail
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Lexer
Lexer(java.io.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 Detail
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zzUnpackcmap_top
private static int[] zzUnpackcmap_top()
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zzUnpackcmap_top
private static int zzUnpackcmap_top(java.lang.String packed, int offset, int[] result)
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zzUnpackcmap_blocks
private static int[] zzUnpackcmap_blocks()
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zzUnpackcmap_blocks
private static int zzUnpackcmap_blocks(java.lang.String packed, int offset, int[] result)
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zzUnpackAction
private static int[] zzUnpackAction()
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zzUnpackAction
private static int zzUnpackAction(java.lang.String packed, int offset, int[] result)
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zzUnpackRowMap
private static int[] zzUnpackRowMap()
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zzUnpackRowMap
private static int zzUnpackRowMap(java.lang.String packed, int offset, int[] result)
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zzUnpacktrans
private static int[] zzUnpacktrans()
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zzUnpacktrans
private static int zzUnpacktrans(java.lang.String packed, int offset, int[] result)
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zzUnpackAttribute
private static int[] zzUnpackAttribute()
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zzUnpackAttribute
private static int zzUnpackAttribute(java.lang.String packed, int offset, int[] result)
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requestLargerBuffer
private void requestLargerBuffer() throws TomlStreamReadException
- Throws:
TomlStreamReadException
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releaseBuffers
public void releaseBuffers()
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getNestingDepth
public int getNestingDepth()
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startString
private void startString()
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appendNormalTextToken
private void appendNormalTextToken() throws java.io.IOException
- Throws:
java.io.IOException
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appendNewlineWithPossibleTrim
private void appendNewlineWithPossibleTrim() throws java.io.IOException
- Throws:
java.io.IOException
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appendUnicodeEscapeShort
private void appendUnicodeEscapeShort() throws java.io.IOException
- Throws:
java.io.IOException
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appendUnicodeEscapeLong
private void appendUnicodeEscapeLong() throws java.io.IOException
- Throws:
java.io.IOException
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getLine
int getLine()
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getColumn
int getColumn()
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getCharPos
long getCharPos()
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getTextBuffer
char[] getTextBuffer()
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getTextBufferStart
int getTextBufferStart()
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getTextBufferEnd
int getTextBufferEnd()
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zzMaxBufferLen
private int zzMaxBufferLen()
Returns the maximum size of the scanner buffer, which limits the size of tokens.
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zzCanGrow
private boolean zzCanGrow()
Whether the scanner buffer can grow to accommodate a larger token.
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zzCMap
private static int zzCMap(int input)
Translates raw input code points to DFA table row
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zzRefill
private boolean zzRefill() throws java.io.IOException
Refills the input buffer.- Returns:
false
iff there was new input.- Throws:
java.io.IOException
- if any I/O-Error occurs
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yyclose
public final void yyclose() throws java.io.IOException
Closes the input reader.- Throws:
java.io.IOException
- if the reader could not be closed.
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yyResetPosition
private final void yyResetPosition()
Resets the input position.
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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
public final java.lang.String 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
public TomlToken yylex() throws java.io.IOException
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:
java.io.IOException
- if any I/O-Error occurs.
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