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## org.codehaus.groovy.syntax
[Java] Class Token

    java.lang.Object
      org.codehaus.groovy.syntax.CSTNode
          org.codehaus.groovy.syntax.Token

    public class Token
    extends CSTNode

A `CSTNode` produced by the `Lexer`.

Authors:
  bob mcwhirter
  Chris Poirier

Version:
  \$Id: Token.java 6778 2007-07-02 10:40:33Z glaforge \$

See Also:
  Parser
  Token
  Reduction
  Types

Field Summary
`static Token` | `EOF`
`static Token` | `NULL`

Constructor Summary
`Token(int type, String text, int startLine, int startColumn)` Initializes the Token with the specified information.

Method Summary
`Reduction` | `asReduction()` Creates a `Reduction` from this token.
`Reduction` | `asReduction(CSTNode second)` Creates a `Reduction` from this token, adding the supplied node as the second element.
`Reduction` | `asReduction(CSTNode second, CSTNode third)` Creates a `Reduction` from this token, adding the supplied nodes as the second and third element, respectively.
`Reduction` | `asReduction(CSTNode second, CSTNode third, CSTNode fourth)` Creates a `Reduction` from this token, adding the supplied nodes as the second, third, and fourth element, respectively.
`Token` | `dup()` Returns a copy of this Token.
`CSTNode` | `get(int index)` Returns the specified element, or null.
`int` | `getMeaning()` Returns the meaning of this node.
`Token` | `getRoot()` Returns the root of the node.
`String` | `getRootText()` Returns the text of the root node.
`int` | `getStartColumn()` Returns the starting column of the node.
`int` | `getStartLine()` Returns the starting line of the node.
`String` | `getText()` Returns the text of the token.
`int` | `getType()` Returns the actual type of the node.
`static Token` | `newDecimal(String text, int startLine, int startColumn)` Creates a token that represents a decimal number.
`static Token` | `newIdentifier(String text, int startLine, int startColumn)` Creates a token that represents an identifier.
`static Token` | `newInteger(String text, int startLine, int startColumn)` Creates a token that represents an integer.
`static Token` | `newKeyword(String text, int startLine, int startColumn)` Creates a token that represents a keyword.
`static Token` | `newPlaceholder(int type)` Creates a token with the specified meaning.
`static Token` | `newString(String text, int startLine, int startColumn)` Creates a token that represents a double-quoted string.
`static Token` | `newSymbol(int type, int startLine, int startColumn)` Creates a token that represents a symbol, using a library for the text.
`static Token` | `newSymbol(String type, int startLine, int startColumn)` Creates a token that represents a symbol, using a library for the type.
`CSTNode` | `setMeaning(int meaning)` Sets the meaning for this node (and it's root Token).
`void` | `setText(String text)` Not advisable, but if you need to adjust the token's text, this will do it.
`int` | `size()` Returns the number of elements in the node (including root).

Methods inherited from class CSTNode
add, addChildrenOf, asReduction, canMean, children, get, get, getDescription, getMeaning, getMeaningAs, getRoot, getRoot, getRootText, getStartColumn, getStartLine, getType, hasChildren, isA, isAllOf, isAnExpression, isEmpty, isOneOf, markAsExpression, set, setMeaning, size, toString, write, write

Methods inherited from class Object
wait, wait, wait, equals, toString, hashCode, getClass, notify, notifyAll

Field Detail

### EOF

    public static final Token EOF

### NULL

    public static final Token NULL

Constructor Detail

### Token

    public Token(int type, String text, int startLine, int startColumn)

  Initializes the Token with the specified information.

Method Detail

### asReduction

    public Reduction asReduction()

  Creates a `Reduction` from this token. Returns self if the node is already a `Reduction`.

### asReduction

    public Reduction asReduction(CSTNode second)

  Creates a `Reduction` from this token, adding the supplied node as the second element.

### asReduction

    public Reduction asReduction(CSTNode second, CSTNode third)

  Creates a `Reduction` from this token, adding the supplied nodes as the second and third element, respectively.

### asReduction

    public Reduction asReduction(CSTNode second, CSTNode third, CSTNode fourth)

  Creates a `Reduction` from this token, adding the supplied nodes as the second, third, and fourth element, respectively.

### dup

    public Token dup()

  Returns a copy of this Token.

### get

    public CSTNode get(int index)

  Returns the specified element, or null.

### getMeaning

    public int getMeaning()

  Returns the meaning of this node. If the node isEmpty(), returns the type of Token.NULL.

### getRoot

    public Token getRoot()

  Returns the root of the node. By convention, all nodes have a Token as the first element (or root), which indicates the type of the node. May return null if the node `isEmpty()`.

### getRootText

    public String getRootText()

  Returns the text of the root node. Uses `getRoot(true)` to get the root, so you will only receive null in return if the root token returns it.

### getStartColumn

    public int getStartColumn()

  Returns the starting column of the node. Returns -1 if not known.

### getStartLine

    public int getStartLine()

  Returns the starting line of the node. Returns -1 if not known.

### getText

    public String getText()

  Returns the text of the token. Equivalent to `getRootText()` when called directly.

### getType

    public int getType()

  Returns the actual type of the node. If the node isEmpty(), returns the type of Token.NULL.

### newDecimal

    public static Token newDecimal(String text, int startLine, int startColumn)

  Creates a token that represents a decimal number.

### newIdentifier

    public static Token newIdentifier(String text, int startLine, int startColumn)

  Creates a token that represents an identifier.

### newInteger

    public static Token newInteger(String text, int startLine, int startColumn)

  Creates a token that represents an integer.

### newKeyword

    public static Token newKeyword(String text, int startLine, int startColumn)

  Creates a token that represents a keyword. Returns null if the specified text isn't a keyword.

### newPlaceholder

    public static Token newPlaceholder(int type)

  Creates a token with the specified meaning.

### newString

    public static Token newString(String text, int startLine, int startColumn)

  Creates a token that represents a double-quoted string.

### newSymbol

    public static Token newSymbol(int type, int startLine, int startColumn)

  Creates a token that represents a symbol, using a library for the text.

### newSymbol

    public static Token newSymbol(String type, int startLine, int startColumn)

  Creates a token that represents a symbol, using a library for the type.

### setMeaning

    public CSTNode setMeaning(int meaning)

  Sets the meaning for this node (and it's root Token). Not valid if the node isEmpty(). Returns this token, for convenience.

### setText

    public void setText(String text)

  Not advisable, but if you need to adjust the token's text, this will do it.

### size

    public int size()

  Returns the number of elements in the node (including root).

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