java.lang.Object
- org.matheclipse.parser.client.Scanner

Direct Known Subclasses:

Parser
```
public class Scanner
extends Object
```
The Class Scanner.

Field Summary

Fields
Modifier and Type	Field	Description
`protected char`	`fCurrentChar`
`protected int`	`fCurrentColumnStartPosition`
`protected int`	`fCurrentPosition`
`protected org.matheclipse.parser.client.ast.IParserFactory`	`fFactory`
`protected String`	`fInputString`
`protected String`	`fOperatorString`
`protected List<org.matheclipse.parser.client.operator.Operator>`	`fOperList`
`protected int`	`fToken`
`protected int`	`numFormat`
`protected int`	`rowCount`	Row counter for syntax errors.
`static int`	`TT_ARGUMENTS_CLOSE`	Token type: closing bracket for function arguments.
`static int`	`TT_ARGUMENTS_OPEN`	Token type: opening bracket for function arguments.
`static int`	`TT_BLANK`	Token type: pattern placeholder '_'.
`static int`	`TT_COMMA`	',' operator.
`static int`	`TT_DIGIT`	Token type: digit 0,1,2,3,4,5,6,7,8,9.
`static int`	`TT_EOF`	Token type: End-of_File.
`static int`	`TT_FLOATING_POINT`	Token type: floating point number.
`static int`	`TT_IDENTIFIER`	Token type: identifier name.
`static int`	`TT_LIST_CLOSE`	Token type: closing curly braces '}' for ending lists.
`static int`	`TT_LIST_OPEN`	Token type: opening curly braces '{' for starting lists.
`static int`	`TT_OPERATOR`	Token type: operator found in input string.
`static int`	`TT_PARTCLOSE`	Token type: closing brackets for ending the "index part" of an expression.
`static int`	`TT_PARTOPEN`	Token type: opening brackets for starting the "index part" of an expression.
`static int`	`TT_PERCENT`	'%' operator.
`static int`	`TT_PRECEDENCE_CLOSE`	Token type: closing bracket ')' for sub-formulas with higher precedence.
`static int`	`TT_PRECEDENCE_OPEN`	Token type: opening bracket '(' for sub-formulas with higher precedence.
`static int`	`TT_SLOT`	Token type: slot #.
`static int`	`TT_SLOTSEQUENCE`	Token type: slot sequence ##.
`static int`	`TT_STRING`	Token type: string surrounded by "...."

Constructor Summary

Constructors
Constructor Description

Scanner()
Initialize Scanner without a math-expression.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected String`	`getIdentifier()`	Gets the identifier.
`protected void`	`getNextToken()`	getNextToken
`protected Object[]`	`getNumberString()`	Gets the number string.
`protected List<org.matheclipse.parser.client.operator.Operator>`	`getOperator()`	getOperator.
`protected StringBuffer`	`getStringBuffer()`	Gets the string buffer.
`protected void`	`initialize(String s)`	Initialize.
`protected void`	`throwSyntaxError(String error)`	Throw syntax error.
`protected void`	`throwSyntaxError(String error, int errorLength)`	Throw syntax error.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - fInputString
```
protected String fInputString
```
  - fCurrentChar
```
protected char fCurrentChar
```
  - fCurrentPosition
```
protected int fCurrentPosition
```
  - fToken
```
protected int fToken
```
  - fOperatorString
```
protected String fOperatorString
```
  - fOperList
```
protected List<org.matheclipse.parser.client.operator.Operator> fOperList
```
  - rowCount
```
protected int rowCount
```
    Row counter for syntax errors.
  - fCurrentColumnStartPosition
```
protected int fCurrentColumnStartPosition
```
  - TT_EOF
```
public static final int TT_EOF
```
    Token type: End-of_File.
    
    See Also:
    
    Constant Field Values
  - TT_FLOATING_POINT
```
public static final int TT_FLOATING_POINT
```
    Token type: floating point number.
    
    See Also:
    
    Constant Field Values
  - TT_ARGUMENTS_OPEN
```
public static final int TT_ARGUMENTS_OPEN
```
    Token type: opening bracket for function arguments.
    
    See Also:
    
    Constant Field Values
  - TT_ARGUMENTS_CLOSE
```
public static final int TT_ARGUMENTS_CLOSE
```
    Token type: closing bracket for function arguments.
    
    See Also:
    
    Constant Field Values
  - TT_PRECEDENCE_OPEN
```
public static final int TT_PRECEDENCE_OPEN
```
    Token type: opening bracket '(' for sub-formulas with higher precedence.
    
    See Also:
    
    Constant Field Values
  - TT_PRECEDENCE_CLOSE
```
public static final int TT_PRECEDENCE_CLOSE
```
    Token type: closing bracket ')' for sub-formulas with higher precedence.
    
    See Also:
    
    Constant Field Values
  - TT_LIST_OPEN
```
public static final int TT_LIST_OPEN
```
    Token type: opening curly braces '{' for starting lists.
    
    See Also:
    
    Constant Field Values
  - TT_LIST_CLOSE
```
public static final int TT_LIST_CLOSE
```
    Token type: closing curly braces '}' for ending lists.
    
    See Also:
    
    Constant Field Values
  - TT_PARTOPEN
```
public static final int TT_PARTOPEN
```
    Token type: opening brackets for starting the "index part" of an expression.
    
    See Also:
    
    Constant Field Values
  - TT_PARTCLOSE
```
public static final int TT_PARTCLOSE
```
    Token type: closing brackets for ending the "index part" of an expression.
    
    See Also:
    
    Constant Field Values
  - TT_OPERATOR
```
public static final int TT_OPERATOR
```
    Token type: operator found in input string.
    
    See Also:
    
    Constant Field Values
  - TT_COMMA
```
public static final int TT_COMMA
```
    ',' operator.
    
    See Also:
    
    Constant Field Values
  - TT_PERCENT
```
public static final int TT_PERCENT
```
    '%' operator.
    
    See Also:
    
    Constant Field Values
  - TT_STRING
```
public static final int TT_STRING
```
    Token type: string surrounded by "...."
    
    See Also:
    
    Constant Field Values
  - TT_BLANK
```
public static final int TT_BLANK
```
    Token type: pattern placeholder '_'.
    
    See Also:
    
    Constant Field Values
  - TT_IDENTIFIER
```
public static final int TT_IDENTIFIER
```
    Token type: identifier name.
    
    See Also:
    
    Constant Field Values
  - TT_DIGIT
```
public static final int TT_DIGIT
```
    Token type: digit 0,1,2,3,4,5,6,7,8,9.
    
    See Also:
    
    Constant Field Values
  - TT_SLOT
```
public static final int TT_SLOT
```
    Token type: slot #.
    
    See Also:
    
    Constant Field Values
  - TT_SLOTSEQUENCE
```
public static final int TT_SLOTSEQUENCE
```
    Token type: slot sequence ##.
    
    See Also:
    
    Constant Field Values
  - numFormat
```
protected int numFormat
```
  - fFactory
```
protected org.matheclipse.parser.client.ast.IParserFactory fFactory
```
- Constructor Detail
  - Scanner
```
public Scanner()
```
    Initialize Scanner without a math-expression.
- Method Detail
  - initialize
```
protected void initialize(String s)
                   throws SyntaxError
```
    Initialize.
    
    Parameters:
    
    s - the s
    
    Throws:
    
    SyntaxError - the syntax error
  - getOperator
```
protected List<org.matheclipse.parser.client.operator.Operator> getOperator()
```
    getOperator.
    
    Returns:
    
    the operator
  - getNextToken
```
protected void getNextToken()
                     throws SyntaxError
```
    getNextToken
    
    Throws:
    
    SyntaxError - if any.
  - throwSyntaxError
```
protected void throwSyntaxError(String error)
                         throws SyntaxError
```
    Throw syntax error.
    
    Parameters:
    
    error - the error
    
    Throws:
    
    SyntaxError - the syntax error
  - throwSyntaxError
```
protected void throwSyntaxError(String error,
                                int errorLength)
                         throws SyntaxError
```
    Throw syntax error.
    
    Parameters:
    
    error - the error
    
    errorLength - the error length
    
    Throws:
    
    SyntaxError - the syntax error
  - getIdentifier
```
protected String getIdentifier()
```
    Gets the identifier.
    
    Returns:
    
    the identifier
  - getNumberString
```
protected Object[] getNumberString()
```
    Gets the number string.
    
    Returns:
    
    the number string
  - getStringBuffer
```
protected StringBuffer getStringBuffer()
                                throws SyntaxError
```
    Gets the string buffer.
    
    Returns:
    
    the string buffer
    
    Throws:
    
    SyntaxError - the syntax error

Class Scanner

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

fInputString

fCurrentChar

fCurrentPosition

fToken

fOperatorString

fOperList

rowCount

fCurrentColumnStartPosition

TT_EOF

TT_FLOATING_POINT

TT_ARGUMENTS_OPEN

TT_ARGUMENTS_CLOSE

TT_PRECEDENCE_OPEN

TT_PRECEDENCE_CLOSE

TT_LIST_OPEN

TT_LIST_CLOSE

TT_PARTOPEN

TT_PARTCLOSE

TT_OPERATOR

TT_COMMA

TT_PERCENT

TT_STRING

TT_BLANK

TT_IDENTIFIER

TT_DIGIT

TT_SLOT

TT_SLOTSEQUENCE

numFormat

fFactory

Constructor Detail

Scanner

Method Detail

initialize

getOperator

getNextToken

throwSyntaxError

throwSyntaxError

getIdentifier

getNumberString

getStringBuffer