ExprScanner

java.lang.Object
- org.matheclipse.core.parser.ExprScanner

Direct Known Subclasses:: ExprParser

public class ExprScanner
extends java.lang.Object

Field Summary

Fields
Modifier and Type	Field and Description
`protected char`	`fCurrentChar` Current input character
`protected int`	`fCurrentColumnStartPosition` Column counter for syntax errors
`protected int`	`fCurrentPosition` The position of the current character in the input string
`protected IExprParserFactory`	`fFactory`
`protected java.lang.String`	`fInputString` Current parser input string
`protected java.lang.String`	`fOperatorString` The last determined operator string
`protected java.util.List<AbstractExprOperator>`	`fOperList` protected List fOperList;
`protected boolean`	`fPackageMode`
`protected int`	`fRecursionDepth` Recursion depth for brackets.
`protected int`	`fToken` Current input token
`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_BLANK_BLANK`
`static int`	`TT_BLANK_BLANK_BLANK`
`static int`	`TT_BLANK_OPTIONAL` Token type: pattern placeholder '_.'
`static int`	`TT_COMMA` ',' operator
`static int`	`TT_DERIVATIVE`
`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_NEWLINE`
`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 and Description

ExprScanner(boolean packageMode)
Initialize Scanner without a math-expression

Constructors
Constructor and Description
`ExprScanner(boolean packageMode)` Initialize Scanner without a math-expression

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`protected java.lang.String`	`getIdentifier()`
`protected void`	`getNextToken()` Get the next token from the input string
`protected java.lang.Object[]`	`getNumberString()`
`protected java.util.List<AbstractExprOperator>`	`getOperator()`
`protected java.lang.StringBuffer`	`getStringBuffer()`
`protected void`	`initialize(java.lang.String s)`
`protected boolean`	`isWhitespace()` Get the next token from the input string
`protected void`	`throwSyntaxError(java.lang.String error)`
`protected void`	`throwSyntaxError(java.lang.String error, int errorLength)`

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

- Field Detail
  - fInputString
```
protected java.lang.String fInputString
```
    Current parser input string
  - fRecursionDepth
```
protected int fRecursionDepth
```
    Recursion depth for brackets.
  - fCurrentChar
```
protected char fCurrentChar
```
    Current input character
  - fCurrentPosition
```
protected int fCurrentPosition
```
    The position of the current character in the input string
  - fToken
```
protected int fToken
```
    Current input token
  - fOperatorString
```
protected java.lang.String fOperatorString
```
    The last determined operator string
  - fOperList
```
protected java.util.List<AbstractExprOperator> fOperList
```
    protected List fOperList;
  - rowCount
```
protected int rowCount
```
    Row counter for syntax errors.
  - fCurrentColumnStartPosition
```
protected int fCurrentColumnStartPosition
```
    Column counter for syntax errors
  - 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
  - TT_BLANK_BLANK
```
public static final int TT_BLANK_BLANK
```
    See Also:
    
    Constant Field Values
  - TT_BLANK_BLANK_BLANK
```
public static final int TT_BLANK_BLANK_BLANK
```
    See Also:
    
    Constant Field Values
  - TT_BLANK_OPTIONAL
```
public static final int TT_BLANK_OPTIONAL
```
    Token type: pattern placeholder '_.'
    
    See Also:
    
    Constant Field Values
  - TT_DERIVATIVE
```
public static final int TT_DERIVATIVE
```
    See Also:
    
    Constant Field Values
  - TT_NEWLINE
```
public static final int TT_NEWLINE
```
    See Also:
    
    Constant Field Values
  - numFormat
```
protected int numFormat
```
  - fFactory
```
protected IExprParserFactory fFactory
```
  - fPackageMode
```
protected final boolean fPackageMode
```
- Constructor Detail
  - ExprScanner
```
public ExprScanner(boolean packageMode)
```
    Initialize Scanner without a math-expression
- Method Detail
  - initialize
```
protected void initialize(java.lang.String s)
                   throws SyntaxError
```
    Throws:
    
    SyntaxError
  - getOperator
```
protected java.util.List<AbstractExprOperator> getOperator()
```
    Returns:
  - isWhitespace
```
protected boolean isWhitespace()
```
    Get the next token from the input string
  - getNextToken
```
protected void getNextToken()
                     throws SyntaxError
```
    Get the next token from the input string
    
    Throws:
    
    SyntaxError
  - throwSyntaxError
```
protected void throwSyntaxError(java.lang.String error)
                         throws SyntaxError
```
    Throws:
    
    SyntaxError
  - throwSyntaxError
```
protected void throwSyntaxError(java.lang.String error,
                                int errorLength)
                         throws SyntaxError
```
    Throws:
    
    SyntaxError
  - getIdentifier
```
protected java.lang.String getIdentifier()
```
  - getNumberString
```
protected java.lang.Object[] getNumberString()
```
  - getStringBuffer
```
protected java.lang.StringBuffer getStringBuffer()
                                          throws SyntaxError
```
    Throws:
    
    SyntaxError

Class ExprScanner

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

fInputString

fRecursionDepth

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

TT_BLANK_BLANK

TT_BLANK_BLANK_BLANK

TT_BLANK_OPTIONAL

TT_DERIVATIVE

TT_NEWLINE

numFormat

fFactory

fPackageMode

Constructor Detail

ExprScanner

Method Detail

initialize

getOperator

isWhitespace

getNextToken

throwSyntaxError

throwSyntaxError

getIdentifier

getNumberString

getStringBuffer