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processing/app/src/processing/app/syntax/Token.java at master · hayscoding/processing · GitHub
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Token.java
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processing
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app
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src
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processing
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app
/
syntax
/
Token.java
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/*
* Token.java - Generic token
* Copyright (C) 1998, 1999 Slava Pestov
*
* You may use and modify this package for any purpose. Redistribution is
* permitted, in both source and binary form, provided that this notice
* remains intact in all source distributions of this package.
*/
package
processing
.
app
.
syntax
;
/**
* A linked list of tokens. Each token has three fields - a token
* identifier, which is a byte value that can be looked up in the
* array returned by <code>SyntaxDocument.getColors()</code>
* to get a color value, a length value which is the length of the
* token in the text, and a pointer to the next token in the list.
*
* @author Slava Pestov
* @version $Id$
*/
public
class
Token
{
/** Normal text token id. This should be used to mark normal text. */
public
static
final
byte
NULL
=
0
;
/** This can be used to mark a comment. */
public
static
final
byte
COMMENT1
=
1
;
/** This can be used to mark a comment. */
public
static
final
byte
COMMENT2
=
2
;
/** Strings in quotes */
public
static
final
byte
LITERAL1
=
3
;
/** Constants (QUARTER_PI, CORNERS, etc.) */
public
static
final
byte
LITERAL2
=
4
;
/**
* Label token id. This can be used to mark labels
* (eg, C mode uses this to mark ...: sequences)
*/
public
static
final
byte
LABEL
=
5
;
/** Keywords (void, int, boolean, etc.) */
public
static
final
byte
KEYWORD1
=
6
;
/** Fields [variables within a class] */
public
static
final
byte
KEYWORD2
=
7
;
/** Loop/function-like blocks (for, while, etc.) */
public
static
final
byte
KEYWORD3
=
8
;
/** Processing variables (width, height, focused, etc.) */
public
static
final
byte
KEYWORD4
=
9
;
/** Datatypes (int, boolean, etc.) */
public
static
final
byte
KEYWORD5
=
10
;
/** Keywords which can be followed by parenthesis */
public
static
final
byte
KEYWORD6
=
11
;
/** Functions */
public
static
final
byte
FUNCTION1
=
12
;
/** Methods (functions inside a class) */
public
static
final
byte
FUNCTION2
=
13
;
/** Loop/function-like blocks (for, while, etc.) */
public
static
final
byte
FUNCTION3
=
14
;
/** Built-in Processing functions (setup, draw, mouseDragged). */
public
static
final
byte
FUNCTION4
=
15
;
/**
* Operator token id. This can be used to mark an
* operator. (eg, SQL mode marks +, -, etc with this
* token type)
*/
public
static
final
byte
OPERATOR
=
16
;
/**
* Invalid token id. This can be used to mark invalid
* or incomplete tokens, so the user can easily spot
* syntax errors.
*/
public
static
final
byte
INVALID
=
17
;
/** The total number of defined token ids. */
public
static
final
byte
ID_COUNT
=
INVALID
+
1
;
/**
* The first id that can be used for internal state
* in a token marker.
*/
public
static
final
byte
INTERNAL_FIRST
=
100
;
/**
* The last id that can be used for internal state
* in a token marker.
*/
public
static
final
byte
INTERNAL_LAST
=
126
;
/**
* The token type, that along with a length of 0
* marks the end of the token list.
*/
public
static
final
byte
END
=
127
;
/**
* The length of this token.
*/
public
int
length
;
/**
* The id of this token.
*/
public
byte
id
;
/**
* The next token in the linked list.
*/
public
Token
next
;
/**
* Creates a new token.
* @param length The length of the token
* @param id The id of the token
*/
public
Token
(
int
length
,
byte
id
) {
this
.
length
=
length
;
this
.
id
=
id
;
}
/**
* Returns a string representation of this token.
*/
public
String
toString
() {
return
"[id="
+
id
+
",length="
+
length
+
"]"
;
}
}
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