scala.tools.nsc.ast.parser.Scanners

# SourceFileScanner

#### class SourceFileScanner extends Scanner

A scanner for a given source file not necessarily attached to a compilation unit. Useful for looking inside source files that aren not currently compiled to see what's there

Linear Supertypes
Scanner, Scanners.ScannerCommon, ScannerData, TokenData, Scanners.CommonTokenData, CharArrayReader, CharArrayReaderData, AnyRef, Any
Known Subclasses
ParensAnalyzer, UnitScanner
Type Hierarchy Learn more about scaladoc diagrams
Ordering

1. Alphabetic
2. By inheritance

Inherited

1. SourceFileScanner
2. Scanner
3. ScannerCommon
4. ScannerData
5. TokenData
6. CommonTokenData
7. CharArrayReader
8. CharArrayReaderData
9. AnyRef
10. Any

Implicitly

1. by any2stringadd
2. by StringFormat
3. by Ensuring
4. by ArrowAssoc

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Visibility

1. Public
2. All

### Instance Constructors

1. #### new SourceFileScanner(source: SourceFile)

### Type Members

1. #### class CharArrayLookaheadReader extends CharArrayReader

   Definition Classes
     CharArrayReader

### Value Members

1. #### final def !=(arg0: Any): Boolean

   Definition Classes
     AnyRef → Any

2. #### final def ##(): Int

   Definition Classes
     AnyRef → Any

3. #### def +(other: String): String

   Implicit information
     This member is added by an implicit conversion from SourceFileScanner to any2stringadd[SourceFileScanner] performed by method any2stringadd in scala.Predef.
   Definition Classes
     any2stringadd

4. #### def ->[B](y: B): (SourceFileScanner, B)

   Implicit information
     This member is added by an implicit conversion from SourceFileScanner to ArrowAssoc[SourceFileScanner] performed by method ArrowAssoc in scala.Predef.
   Definition Classes
     ArrowAssoc
   Annotations
     @inline()

5. #### final def ==(arg0: Any): Boolean

   Definition Classes
     AnyRef → Any

6. #### def applyBracePatch(): Boolean

   overridden in UnitScanners: apply brace patch if one exists for this offset return true if subsequent end of line handling should be suppressed.

   overridden in UnitScanners: apply brace patch if one exists for this offset return true if subsequent end of line handling should be suppressed.

   Definition Classes
     Scanner

7. #### final def asInstanceOf[T0]: T0

   Definition Classes
     Any

8. #### var base: Int

   the base of a number

   the base of a number

   Definition Classes
     TokenData

9. #### val buf: Array[Char]

   Definition Classes
     SourceFileScanner → CharArrayReader

10. #### val cbuf: collection.mutable.StringBuilder

    A character buffer for literals

    A character buffer for literals

    Definition Classes
      Scanner

11. #### var ch: Char

    the last read character

    the last read character

    Definition Classes
      CharArrayReaderData

12. #### def charLitOr(op: () ⇒ Unit): Unit

    Parse character literal if current character is followed by \', or follow with given op and return a symbol literal token

    Parse character literal if current character is followed by \', or follow with given op and return a symbol literal token

    Definition Classes
      Scanner

13. #### var charOffset: Int

    The offset one past the last read character

    The offset one past the last read character

    Definition Classes
      CharArrayReaderData

14. #### def charVal: Char

    Convert current strVal to char value

    Convert current strVal to char value

    Definition Classes
      Scanner

15. #### def checkNoLetter(): Unit

    Definition Classes
      Scanner

16. #### def clone(): AnyRef

    Attributes
      protected[java.lang]
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )

17. #### def copyFrom(sd: ScannerData): SourceFileScanner.this.type

    Definition Classes
      ScannerData

18. #### def copyFrom(td: TokenData): SourceFileScanner.this.type

    Definition Classes
      TokenData

19. #### def copyFrom(cd: CharArrayReaderData): SourceFileScanner.this.type

    Definition Classes
      CharArrayReaderData

20. #### val decodeUni: Boolean

    Definition Classes
      SourceFileScanner → CharArrayReader

21. #### def deprecationWarning(off: Scanners.Offset, msg: String): Unit

    Definition Classes
      SourceFileScanner → ScannerCommon

22. #### def deprecationWarning(msg: String): Unit

    Definition Classes
      Scanner

23. #### def discardDocBuffer(): Unit

    To prevent doc comments attached to expressions from leaking out of scope onto the next documentable entity, they are discarded upon passing a right brace, bracket, or parenthesis.

    To prevent doc comments attached to expressions from leaking out of scope onto the next documentable entity, they are discarded upon passing a right brace, bracket, or parenthesis.

    Definition Classes
      Scanner

24. #### def emitIdentifierDeprecationWarnings: Boolean

    Determines whether this scanner should emit identifier deprecation warnings, e.

    Determines whether this scanner should emit identifier deprecation warnings, e.g. when seeing `macro` or `then`, which are planned to become keywords in future versions of Scala.

    Attributes
      protected
    Definition Classes
      Scanner

25. #### def ensuring(cond: (SourceFileScanner) ⇒ Boolean, msg: ⇒ Any): SourceFileScanner

    Implicit information
      This member is added by an implicit conversion from SourceFileScanner to Ensuring[SourceFileScanner] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring

26. #### def ensuring(cond: (SourceFileScanner) ⇒ Boolean): SourceFileScanner

    Implicit information
      This member is added by an implicit conversion from SourceFileScanner to Ensuring[SourceFileScanner] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring

27. #### def ensuring(cond: Boolean, msg: ⇒ Any): SourceFileScanner

    Implicit information
      This member is added by an implicit conversion from SourceFileScanner to Ensuring[SourceFileScanner] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring

28. #### def ensuring(cond: Boolean): SourceFileScanner

    Implicit information
      This member is added by an implicit conversion from SourceFileScanner to Ensuring[SourceFileScanner] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring

29. #### final def eq(arg0: AnyRef): Boolean

    Definition Classes
      AnyRef

30. #### def equals(arg0: Any): Boolean

    Definition Classes
      AnyRef → Any

31. #### def error(off: Scanners.Offset, msg: String): Unit

    An error routine to call on bad unicode escapes \\uxxxx.

    An error routine to call on bad unicode escapes \\uxxxx.

    Definition Classes
      SourceFileScanner → ScannerCommon → CharArrayReader

32. #### final def fetchToken(): Unit

    read next token, filling TokenData fields of Scanner.

    read next token, filling TokenData fields of Scanner.

    Attributes
      protected
    Definition Classes
      Scanner

33. #### def finalize(): Unit

    Attributes
      protected[java.lang]
    Definition Classes
      AnyRef
    Annotations
      @throws( classOf[java.lang.Throwable] )

34. #### def floatVal: Double

    Definition Classes
      Scanner

35. #### def floatVal(negated: Boolean): Double

    Convert current strVal, base to double value

    Convert current strVal, base to double value

    Definition Classes
      Scanner

36. #### def flushDoc(): Global.DocComment

    Definition Classes
      Scanner

37. #### def formatted(fmtstr: String): String

    Implicit information
      This member is added by an implicit conversion from SourceFileScanner to StringFormat[SourceFileScanner] performed by method StringFormat in scala.Predef.
    Definition Classes
      StringFormat
    Annotations
      @inline()

38. #### final def getClass(): Class[_]

    Definition Classes
      AnyRef → Any

39. #### def getFraction(): Unit

    read fractional part and exponent of floating point number if one is present.

    read fractional part and exponent of floating point number if one is present.

    Attributes
      protected
    Definition Classes
      Scanner

40. #### def getLitChar(): Unit

    copy current character into cbuf, interpreting any escape sequences, and advance to next character.

    copy current character into cbuf, interpreting any escape sequences, and advance to next character.

    Attributes
      protected
    Definition Classes
      Scanner

41. #### def getNumber(): Unit

    Read a number into strVal and set base

    Read a number into strVal and set base

    Attributes
      protected
    Definition Classes
      Scanner

42. #### def hashCode(): Int

    Definition Classes
      AnyRef → Any

43. #### def healBraces(): List[BracePatch]

    overridden in UnitScanners

    overridden in UnitScanners

    Definition Classes
      Scanner

44. #### def inFirstOfStat(token: Scanners.Token): Boolean

    Can token start a statement?

    Can token start a statement?

    Definition Classes
      Scanner

45. #### def inLastOfStat(token: Scanners.Token): Boolean

    Can token end a statement?

    Can token end a statement?

    Definition Classes
      Scanner

46. #### def incompleteInputError(off: Scanners.Offset, msg: String): Unit

    Definition Classes
      SourceFileScanner → ScannerCommon

47. #### def incompleteInputError(msg: String): Unit

    signal an error where the input ended in the middle of a token

    signal an error where the input ended in the middle of a token

    Definition Classes
      Scanner

48. #### def init(): Unit

    Initialization method: read first char, then first token

    Initialization method: read first char, then first token

    Definition Classes
      Scanner

49. #### def intVal: Long

    Definition Classes
      Scanner

50. #### def intVal(negated: Boolean): Long

    Convert current strVal, base to long value This is tricky because of max negative value.

    Convert current strVal, base to long value This is tricky because of max negative value.

    Definition Classes
      Scanner

51. #### def invalidEscape(): Unit

    Attributes
      protected
    Definition Classes
      Scanner

52. #### def isAtEnd: Boolean

    Definition Classes
      Scanner

53. #### final def isInstanceOf[T0]: Boolean

    Definition Classes
      Any

54. #### def isUnicodeEscape: Boolean

    Is last character a unicode escape \\uxxxx?

    Is last character a unicode escape \\uxxxx?

    Definition Classes
      CharArrayReader

55. #### var lastLineStartOffset: Int

    The start offset of the line before the current one

    The start offset of the line before the current one

    Definition Classes
      CharArrayReaderData

56. #### var lastOffset: Scanners.Offset

    the offset of the character following the token preceding this one

    the offset of the character following the token preceding this one

    Definition Classes
      TokenData

57. #### var lastUnicodeOffset: Int

    Attributes
      protected
    Definition Classes
      CharArrayReaderData

58. #### var lineStartOffset: Int

    The start offset of the current line

    The start offset of the current line

    Definition Classes
      CharArrayReaderData

59. #### def lookaheadReader: CharArrayLookaheadReader

    A new reader that takes off at the current character position

    A new reader that takes off at the current character position

    Definition Classes
      CharArrayReader

60. #### var name: Global.TermName

    the name of an identifier

    the name of an identifier

    Definition Classes
      TokenData → CommonTokenData

61. #### final def ne(arg0: AnyRef): Boolean

    Definition Classes
      AnyRef

62. #### val next: TokenData

    we need one token lookahead and one token history

    we need one token lookahead and one token history

    Definition Classes
      ScannerData

63. #### final def nextChar(): Unit

    Advance one character; reducing CR;LF pairs to just LF

    Advance one character; reducing CR;LF pairs to just LF

    Definition Classes
      CharArrayReader

64. #### final def nextRawChar(): Unit

    Advance one character, leaving CR;LF pairs intact.

    Advance one character, leaving CR;LF pairs intact. This is for use in multi-line strings, so there are no "potential line ends" here.

    Definition Classes
      CharArrayReader

65. #### def nextToken(): Unit

    Produce next token, filling TokenData fields of Scanner.

    Produce next token, filling TokenData fields of Scanner.

    Definition Classes
      Scanner

66. #### def nextTokenAllow(name: Global.Name): Unit

    Get next token, and allow the otherwise deprecated ident `name`

    Get next token, and allow the otherwise deprecated ident `name`

    Definition Classes
      Scanner

67. #### final def notify(): Unit

    Definition Classes
      AnyRef

68. #### final def notifyAll(): Unit

    Definition Classes
      AnyRef

69. #### var offset: Scanners.Offset

    the offset of the first character of the current token

    the offset of the first character of the current token

    Definition Classes
      TokenData

70. #### def parenBalance(token: Scanners.Token): Int

    overridden in UnitScanners

    overridden in UnitScanners

    Definition Classes
      Scanner

71. #### val prev: TokenData

    Definition Classes
      ScannerData

72. #### def putChar(c: Char): Unit

    append Unicode character to "cbuf" buffer

    append Unicode character to "cbuf" buffer

    Attributes
      protected
    Definition Classes
      Scanner

73. #### def putCommentChar(): Unit

    Attributes
      protected
    Definition Classes
      Scanner

74. #### def resume(lastCode: Scanners.Token): Unit

    Definition Classes
      Scanner

75. #### var sepRegions: List[Scanners.Token]

    a stack of tokens which indicates whether line-ends can be statement separators also used for keeping track of nesting levels.

    a stack of tokens which indicates whether line-ends can be statement separators also used for keeping track of nesting levels. We keep track of the closing symbol of a region. This can be RPAREN if region starts with '(' RBRACKET if region starts with '[' RBRACE if region starts with '{' ARROW if region starts with `case' STRINGLIT if region is a string interpolation expression starting with '${' (the STRINGLIT appears twice in succession on the stack iff the expression is a multiline string literal).`

    Definition Classes
      Scanner

76. #### def skipBlockComment(): Unit

    Definition Classes
      Scanner

77. #### def skipComment(): Boolean

    Definition Classes
      Scanner

78. #### def skipDocComment(): Unit

    Definition Classes
      Scanner

79. #### final def skipNestedComments(): Unit

    Definition Classes
      Scanner
    Annotations
      @tailrec()

80. #### def skipToken(): Scanners.Offset

    read next token and return last offset

    read next token and return last offset

    Definition Classes
      Scanner

81. #### val source: SourceFile

82. #### var strVal: String

    the string value of a literal

    the string value of a literal

    Definition Classes
      TokenData

83. #### final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
      AnyRef

84. #### def syntaxError(msg: String): Unit

    generate an error at the current token offset

    generate an error at the current token offset

    Definition Classes
      Scanner

85. #### def syntaxError(off: Scanners.Offset, msg: String): Unit

    generate an error at the given offset

    generate an error at the given offset

    Definition Classes
      Scanner

86. #### def toString(): String

    Definition Classes
      Scanner → AnyRef → Any

87. #### var token: Scanners.Token

    the next token

    the next token

    Definition Classes
      TokenData → CommonTokenData

88. #### final def wait(): Unit

    Definition Classes
      AnyRef
    Annotations
      @throws( ... )

89. #### final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
      AnyRef
    Annotations
      @throws( ... )

90. #### final def wait(arg0: Long): Unit

    Definition Classes
      AnyRef
    Annotations
      @throws( ... )

91. #### def →[B](y: B): (SourceFileScanner, B)

    Implicit information
      This member is added by an implicit conversion from SourceFileScanner to ArrowAssoc[SourceFileScanner] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
      ArrowAssoc

### Inherited from Scanner

### Inherited from Scanners.ScannerCommon

### Inherited from ScannerData

### Inherited from TokenData

### Inherited from Scanners.CommonTokenData

### Inherited from CharArrayReader

### Inherited from CharArrayReaderData

### Inherited from AnyRef

### Inherited from Any

### Inherited by implicit conversion any2stringadd from SourceFileScanner to any2stringadd[SourceFileScanner]

### Inherited by implicit conversion StringFormat from SourceFileScanner to StringFormat[SourceFileScanner]

### Inherited by implicit conversion Ensuring from SourceFileScanner to Ensuring[SourceFileScanner]

### Inherited by implicit conversion ArrowAssoc from SourceFileScanner to ArrowAssoc[SourceFileScanner]

### Ungrouped