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## jif.parse
Class Lexer_c

    java.lang.Object
      jif.parse.Lexer_c

All Implemented Interfaces:
  polyglot.lex.Lexer

    public class Lexer_c

extends java.lang.Object
implements polyglot.lex.Lexer

This class is a scanner generated by JFlex 1.3.5 on 4/15/08 1:54 PM from the specification file `file:/amd/lion/x/schong/jif/dist/src/jif/parse/jif.flex`

Field Summary
`static int` | `CHARACTER`
`static int` | `END_OF_LINE_COMMENT` lexical states
`static int` | `STRING`
`static int` | `TRADITIONAL_COMMENT`
`static int` | `YYEOF` This character denotes the end of file
`static int` | `YYINITIAL`

Constructor Summary
`Lexer_c(java.io.InputStream in)` Creates a new scanner.
`Lexer_c(java.io.InputStream in, polyglot.frontend.FileSource file, polyglot.util.ErrorQueue eq)`
`Lexer_c(java.io.Reader in)` Creates a new scanner There is also a java.io.InputStream version of this constructor.
`Lexer_c(java.io.Reader reader, polyglot.frontend.FileSource file, polyglot.util.ErrorQueue eq)`

Method Summary
`java.lang.String` | `file()`
`protected void` | `init_keywords()`
`polyglot.lex.Token` | `nextToken()` Resumes scanning until the next regular expression is matched, the end of input is encountered or an I/O-Error occurs.
`java.lang.String` | `path()`
`void` | `yybegin(int newState)` Enters a new lexical state
`char` | `yycharat(int pos)` Returns the character at position `pos` from the matched text.
`void` | `yyclose()` Closes the input stream.
`int` | `yylength()` Returns the length of the matched text region.
`void` | `yyreset(java.io.Reader reader)` Closes the current stream, and resets the scanner to read from a new input stream.
`int` | `yystate()` Returns the current lexical state.
`java.lang.String` | `yytext()` Returns the text matched by the current regular expression.

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

Field Detail

### YYEOF

    public static final int YYEOF

  This character denotes the end of file

  See Also:
    Constant Field Values

### END_OF_LINE_COMMENT

    public static final int END_OF_LINE_COMMENT

  lexical states

  See Also:
    Constant Field Values

### STRING

    public static final int STRING

See Also:
  Constant Field Values

### YYINITIAL

    public static final int YYINITIAL

See Also:
  Constant Field Values

### CHARACTER

    public static final int CHARACTER

See Also:
  Constant Field Values

### TRADITIONAL_COMMENT

    public static final int TRADITIONAL_COMMENT

See Also:
  Constant Field Values

Constructor Detail

### Lexer_c

    public Lexer_c(java.io.InputStream in,
                   polyglot.frontend.FileSource file,
                   polyglot.util.ErrorQueue eq)

### Lexer_c

    public Lexer_c(java.io.Reader reader,
                   polyglot.frontend.FileSource file,
                   polyglot.util.ErrorQueue eq)

### Lexer_c

    public Lexer_c(java.io.Reader in)

  Creates a new scanner There is also a java.io.InputStream version of this constructor.

  Parameters:
    `in` - the java.io.Reader to read input from.

### Lexer_c

    public Lexer_c(java.io.InputStream in)

  Creates a new scanner. There is also java.io.Reader version of this constructor.

  Parameters:
    `in` - the java.io.Inputstream to read input from.

Method Detail

### init_keywords

    protected void init_keywords()

### file

    public java.lang.String file()

  Specified by:
    `file` in interface `polyglot.lex.Lexer`

### path

    public java.lang.String path()

  Specified by:
    `path` in interface `polyglot.lex.Lexer`

### yyclose

    public final void yyclose()
                       throws java.io.IOException

  Closes the input stream.

  Throws:
    `java.io.IOException`

### yyreset

    public final void yyreset(java.io.Reader reader)
                       throws java.io.IOException

  Closes the current stream, and resets the scanner to read from a new input stream. All internal variables are reset, the old input stream cannot be reused (internal buffer is discarded and lost). Lexical state is set to `YY_INITIAL`.

  Parameters:
    `reader` - the new input stream
  Throws:
    `java.io.IOException`

### yystate

    public final int yystate()

  Returns the current lexical state.

### yybegin

    public final void yybegin(int newState)

  Enters a new lexical state

  Parameters:
    `newState` - the new lexical state

### yytext

    public final java.lang.String yytext()

  Returns the text matched by the current regular expression.

### yycharat

    public final char yycharat(int pos)

  Returns the character at position `pos` from the matched text. It is equivalent to yytext().charAt(pos), but faster

  Parameters:
    `pos` - the position of the character to fetch. A value from 0 to yylength()-1.
  Returns:
    the character at position pos

### yylength

    public final int yylength()

  Returns the length of the matched text region.

### nextToken

    public polyglot.lex.Token nextToken()
                                 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.

  Specified by:
    `nextToken` in interface `polyglot.lex.Lexer`
  Returns:
    the next token
  Throws:
    `IOException` - if any I/O-Error occurs

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