class ParensAnalyzer extends UnitScanner
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- ParensAnalyzer
- UnitScanner
- SourceFileScanner
- Scanner
- ScannerCommon
- ScannerData
- TokenData
- CommonTokenData
- CharArrayReader
- CharArrayReaderData
- AnyRef
- Any
- by any2stringadd
- by StringFormat
- by Ensuring
- by ArrowAssoc
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Instance Constructors
- new ParensAnalyzer(unit: Global.CompilationUnit, patches: List[BracePatch])
Type Members
-
class
CharArrayLookaheadReader
extends CharArrayReader
- Definition Classes
- CharArrayReader
Value Members
-
final
def
!=(arg0: Any): Boolean
Test two objects for inequality.
Test two objects for inequality.
- returns
trueif !(this == that), false otherwise.
- Definition Classes
- AnyRef → Any
-
final
def
##(): Int
Equivalent to
x.hashCodeexcept for boxed numeric types andnull.Equivalent to
x.hashCodeexcept for boxed numeric types andnull. For numerics, it returns a hash value which is consistent with value equality: if two value type instances compare as true, then ## will produce the same hash value for each of them. Fornullreturns a hashcode wherenull.hashCodethrows aNullPointerException.- returns
a hash value consistent with ==
- Definition Classes
- AnyRef → Any
-
def
+(other: String): String
- Implicit
- This member is added by an implicit conversion from ParensAnalyzer to any2stringadd[ParensAnalyzer] performed by method any2stringadd in scala.Predef.
- Definition Classes
- any2stringadd
-
def
->[B](y: B): (ParensAnalyzer, B)
- Implicit
- This member is added by an implicit conversion from ParensAnalyzer to ArrowAssoc[ParensAnalyzer] performed by method ArrowAssoc in scala.Predef.
- Definition Classes
- ArrowAssoc
- Annotations
- @inline()
-
final
def
==(arg0: Any): Boolean
The expression
x == thatis equivalent toif (x eq null) that eq null else x.equals(that).The expression
x == thatis equivalent toif (x eq null) that eq null else x.equals(that).- returns
trueif the receiver object is equivalent to the argument;falseotherwise.
- Definition Classes
- AnyRef → Any
-
def
applyBracePatch(): Boolean
Insert or delete a brace, if a patch exists for this offset
Insert or delete a brace, if a patch exists for this offset
- Definition Classes
- UnitScanner → Scanner
-
final
def
asInstanceOf[T0]: T0
Cast the receiver object to be of type
T0.Cast the receiver object to be of type
T0.Note that the success of a cast at runtime is modulo Scala's erasure semantics. Therefore the expression
1.asInstanceOf[String]will throw aClassCastExceptionat runtime, while the expressionList(1).asInstanceOf[List[String]]will not. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the requested type.- returns
the receiver object.
- Definition Classes
- Any
- Exceptions thrown
ClassCastExceptionif the receiver object is not an instance of the erasure of typeT0.
- val balance: Map[Int, Int]
-
var
base: Int
the base of a number
the base of a number
- Definition Classes
- TokenData
-
val
bracePairs: List[BracePair]
The list of matching top-level brace pairs (each of which may contain nested brace pairs).
-
val
buf: Array[Char]
- Definition Classes
- SourceFileScanner → CharArrayReader
-
val
cbuf: collection.mutable.StringBuilder
A character buffer for literals
A character buffer for literals
- Definition Classes
- Scanner
-
var
ch: Char
the last read character
the last read character
- Definition Classes
- CharArrayReaderData
-
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
-
var
charOffset: Int
The offset one past the last read character
The offset one past the last read character
- Definition Classes
- CharArrayReaderData
-
def
charVal: Char
Convert current strVal to char value
Convert current strVal to char value
- Definition Classes
- Scanner
-
def
checkNoLetter(): Unit
- Definition Classes
- Scanner
-
def
clone(): AnyRef
Create a copy of the receiver object.
Create a copy of the receiver object.
The default implementation of the
clonemethod is platform dependent.- returns
a copy of the receiver object.
- Attributes
- protected[java.lang]
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
- Note
not specified by SLS as a member of AnyRef
- def column(offset: Scanners.Offset): Int
-
def
copyFrom(sd: ScannerData): ParensAnalyzer.this.type
- Definition Classes
- ScannerData
-
def
copyFrom(td: TokenData): ParensAnalyzer.this.type
- Definition Classes
- TokenData
-
def
copyFrom(cd: CharArrayReaderData): ParensAnalyzer.this.type
- Definition Classes
- CharArrayReaderData
-
val
decodeUni: Boolean
- Definition Classes
- SourceFileScanner → CharArrayReader
- def deleteRBrace(): List[BracePatch]
-
def
deprecationWarning(off: Scanners.Offset, msg: String, since: String): Unit
- Definition Classes
- UnitScanner → SourceFileScanner → ScannerCommon
-
def
deprecationWarning(msg: String, since: String): Unit
- Definition Classes
- Scanner
-
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
-
def
emitIdentifierDeprecationWarnings: Boolean
Determines whether this scanner should emit identifier deprecation warnings, e.g.
Determines whether this scanner should emit identifier deprecation warnings, e.g. when seeing
macroorthen, which are planned to become keywords in future versions of Scala.- Definition Classes
- ParensAnalyzer → Scanner
-
def
ensuring(cond: (ParensAnalyzer) ⇒ Boolean, msg: ⇒ Any): ParensAnalyzer
- Implicit
- This member is added by an implicit conversion from ParensAnalyzer to Ensuring[ParensAnalyzer] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
def
ensuring(cond: (ParensAnalyzer) ⇒ Boolean): ParensAnalyzer
- Implicit
- This member is added by an implicit conversion from ParensAnalyzer to Ensuring[ParensAnalyzer] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
def
ensuring(cond: Boolean, msg: ⇒ Any): ParensAnalyzer
- Implicit
- This member is added by an implicit conversion from ParensAnalyzer to Ensuring[ParensAnalyzer] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
def
ensuring(cond: Boolean): ParensAnalyzer
- Implicit
- This member is added by an implicit conversion from ParensAnalyzer to Ensuring[ParensAnalyzer] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
final
def
eq(arg0: AnyRef): Boolean
Tests whether the argument (
that) is a reference to the receiver object (this).Tests whether the argument (
that) is a reference to the receiver object (this).The
eqmethod implements an equivalence relation on non-null instances ofAnyRef, and has three additional properties:- It is consistent: for any non-null instances
xandyof typeAnyRef, multiple invocations ofx.eq(y)consistently returnstrueor consistently returnsfalse. - For any non-null instance
xof typeAnyRef,x.eq(null)andnull.eq(x)returnsfalse. null.eq(null)returnstrue.
When overriding the
equalsorhashCodemethods, it is important to ensure that their behavior is consistent with reference equality. Therefore, if two objects are references to each other (o1 eq o2), they should be equal to each other (o1 == o2) and they should hash to the same value (o1.hashCode == o2.hashCode).- returns
trueif the argument is a reference to the receiver object;falseotherwise.
- Definition Classes
- AnyRef
- It is consistent: for any non-null instances
-
def
equals(arg0: Any): Boolean
The equality method for reference types.
-
def
error(offset: 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
- ParensAnalyzer → UnitScanner → SourceFileScanner → ScannerCommon → CharArrayReader
-
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
-
def
finalize(): Unit
Called by the garbage collector on the receiver object when there are no more references to the object.
Called by the garbage collector on the receiver object when there are no more references to the object.
The details of when and if the
finalizemethod is invoked, as well as the interaction betweenfinalizeand non-local returns and exceptions, are all platform dependent.- Attributes
- protected[java.lang]
- Definition Classes
- AnyRef
- Annotations
- @throws( classOf[java.lang.Throwable] )
- Note
not specified by SLS as a member of AnyRef
-
def
floatVal: Double
- Definition Classes
- Scanner
-
def
floatVal(negated: Boolean): Double
Convert current strVal, base to double value
Convert current strVal, base to double value
- Definition Classes
- Scanner
-
def
flushDoc(): Global.DocComment
- Definition Classes
- Scanner
-
def
formatted(fmtstr: String): String
- Implicit
- This member is added by an implicit conversion from ParensAnalyzer to StringFormat[ParensAnalyzer] performed by method StringFormat in scala.Predef.
- Definition Classes
- StringFormat
- Annotations
- @inline()
-
final
def
getClass(): Class[_]
Returns the runtime class representation of the object.
Returns the runtime class representation of the object.
- returns
a class object corresponding to the runtime type of the receiver.
- Definition Classes
- AnyRef → Any
-
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
-
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
-
def
getNumber(): Unit
Read a number into strVal.
Read a number into strVal.
The
basecan be 8, 10 or 16, where base 8 flags a leading zero. For ints, base 8 is legal only for the case of exactly one zero.- Attributes
- protected
- Definition Classes
- Scanner
-
def
hashCode(): Int
The hashCode method for reference types.
-
def
healBraces(): List[BracePatch]
overridden in UnitScanners
overridden in UnitScanners
- Definition Classes
- UnitScanner → Scanner
-
def
inFirstOfStat(token: Scanners.Token): Boolean
Can token start a statement?
Can token start a statement?
- Definition Classes
- Scanner
-
def
inLastOfStat(token: Scanners.Token): Boolean
Can token end a statement?
Can token end a statement?
- Definition Classes
- Scanner
-
def
incompleteInputError(off: Scanners.Offset, msg: String): Unit
- Definition Classes
- UnitScanner → SourceFileScanner → ScannerCommon
-
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
-
def
init(): Unit
Initialization method: read first char, then first token
Initialization method: read first char, then first token
- Definition Classes
- Scanner
- def insertPatch(patches: List[BracePatch], patch: BracePatch): List[BracePatch]
- def insertRBrace(): List[BracePatch]
-
def
intVal: Long
- Definition Classes
- Scanner
-
def
intVal(negated: Boolean): Long
Convert current strVal, base to long value.
Convert current strVal, base to long value. This is tricky because of max negative value.
Conversions in base 10 and 16 are supported. As a permanent migration path, attempts to write base 8 literals except
0emit a verbose error.- Definition Classes
- Scanner
-
def
invalidEscape(): Unit
- Attributes
- protected
- Definition Classes
- Scanner
-
def
isAtEnd: Boolean
- Definition Classes
- Scanner
-
final
def
isInstanceOf[T0]: Boolean
Test whether the dynamic type of the receiver object is
T0.Test whether the dynamic type of the receiver object is
T0.Note that the result of the test is modulo Scala's erasure semantics. Therefore the expression
1.isInstanceOf[String]will returnfalse, while the expressionList(1).isInstanceOf[List[String]]will returntrue. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the specified type.- returns
trueif the receiver object is an instance of erasure of typeT0;falseotherwise.
- Definition Classes
- Any
-
def
isUnicodeEscape: Boolean
Is last character a unicode escape \\uxxxx?
Is last character a unicode escape \\uxxxx?
- Definition Classes
- CharArrayReader
-
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
-
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
-
var
lastUnicodeOffset: Int
- Attributes
- protected
- Definition Classes
- CharArrayReaderData
- def line(offset: Scanners.Offset): Int
-
val
lineStart: ArrayBuffer[Int]
The offset of the first token on this line, or next following line if blank
-
var
lineStartOffset: Int
The start offset of the current line
The start offset of the current line
- Definition Classes
- CharArrayReaderData
-
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
-
var
name: Global.TermName
the name of an identifier
the name of an identifier
- Definition Classes
- TokenData → CommonTokenData
-
final
def
ne(arg0: AnyRef): Boolean
Equivalent to
!(this eq that).Equivalent to
!(this eq that).- returns
trueif the argument is not a reference to the receiver object;falseotherwise.
- Definition Classes
- AnyRef
-
val
next: TokenData
we need one token lookahead and one token history
we need one token lookahead and one token history
- Definition Classes
- ScannerData
-
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
-
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
-
def
nextToken(): Unit
Produce next token, filling TokenData fields of Scanner.
Produce next token, filling TokenData fields of Scanner.
- Definition Classes
- Scanner
-
def
nextTokenAllow(name: Global.Name): Unit
Get next token, and allow the otherwise deprecated ident
nameGet next token, and allow the otherwise deprecated ident
name- Definition Classes
- Scanner
-
final
def
notify(): Unit
Wakes up a single thread that is waiting on the receiver object's monitor.
Wakes up a single thread that is waiting on the receiver object's monitor.
- Definition Classes
- AnyRef
- Note
not specified by SLS as a member of AnyRef
-
final
def
notifyAll(): Unit
Wakes up all threads that are waiting on the receiver object's monitor.
Wakes up all threads that are waiting on the receiver object's monitor.
- Definition Classes
- AnyRef
- Note
not specified by SLS as a member of AnyRef
-
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
-
def
parenBalance(token: Scanners.Token): Int
overridden in UnitScanners
overridden in UnitScanners
- Definition Classes
- UnitScanner → Scanner
-
lazy val
parensAnalyzer: ParensAnalyzer
- Definition Classes
- UnitScanner
-
val
prev: TokenData
- Definition Classes
- ScannerData
-
def
putChar(c: Char): Unit
append Unicode character to "cbuf" buffer
append Unicode character to "cbuf" buffer
- Attributes
- protected
- Definition Classes
- Scanner
-
def
putCommentChar(): Unit
- Attributes
- protected
- Definition Classes
- Scanner
-
def
resume(lastCode: Scanners.Token): Unit
- Definition Classes
- Scanner
-
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
-
def
skipBlockComment(): Unit
- Definition Classes
- Scanner
-
def
skipComment(): Boolean
- Definition Classes
- Scanner
-
def
skipDocComment(): Unit
- Definition Classes
- Scanner
-
final
def
skipNestedComments(): Unit
- Definition Classes
- Scanner
- Annotations
- @tailrec()
-
def
skipToken(): Scanners.Offset
read next token and return last offset
read next token and return last offset
- Definition Classes
- Scanner
-
val
source: SourceFile
- Definition Classes
- SourceFileScanner
-
var
strVal: String
the string value of a literal
the string value of a literal
- Definition Classes
- TokenData
-
final
def
synchronized[T0](arg0: ⇒ T0): T0
- Definition Classes
- AnyRef
-
def
syntaxError(msg: String): Unit
generate an error at the current token offset
generate an error at the current token offset
- Definition Classes
- Scanner
-
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
- var tabSeen: Boolean
-
def
toString(): String
Creates a String representation of this object.
-
var
token: Scanners.Token
the next token
the next token
- Definition Classes
- TokenData → CommonTokenData
-
val
unit: Global.CompilationUnit
- Definition Classes
- UnitScanner
-
final
def
wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
-
final
def
wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
-
final
def
wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
-
def
→[B](y: B): (ParensAnalyzer, B)
- Implicit
- This member is added by an implicit conversion from ParensAnalyzer to ArrowAssoc[ParensAnalyzer] performed by method ArrowAssoc in scala.Predef.
- Definition Classes
- ArrowAssoc
The Scala compiler API.
The following resources are useful for Scala plugin/compiler development: