diff options
Diffstat (limited to 'src/reflect/scala/reflect/internal/Names.scala')
| -rw-r--r-- | src/reflect/scala/reflect/internal/Names.scala | 50 |
1 files changed, 37 insertions, 13 deletions
diff --git a/src/reflect/scala/reflect/internal/Names.scala b/src/reflect/scala/reflect/internal/Names.scala index f8598dca7a..b8141d25f5 100644 --- a/src/reflect/scala/reflect/internal/Names.scala +++ b/src/reflect/scala/reflect/internal/Names.scala @@ -177,6 +177,12 @@ trait Names extends api.Names { /** @return the hash value of this name */ final override def hashCode(): Int = index + /** @return true if the string value of this name is equal + * to the string value of the given name or String. + */ + def string_==(that: Name): Boolean = (that ne null) && (toString == that.toString) + def string_==(that: String): Boolean = (that ne null) && (toString == that) + /**** * This has been quite useful to find places where people are comparing * a TermName and a TypeName, or a Name and a String. @@ -210,7 +216,7 @@ trait Names extends api.Names { /** @return the index of first occurrence of char c in this name, length if not found */ final def pos(c: Char): Int = pos(c, 0) - /** @return the index of first occurrence of char c in this name, length if not found */ + /** @return the index of first occurrence of s in this name, length if not found */ final def pos(s: String): Int = pos(s, 0) /** Returns the index of the first occurrence of character c in @@ -319,15 +325,18 @@ trait Names extends api.Names { final def endsWith(char: Char): Boolean = len > 0 && endChar == char final def endsWith(name: String): Boolean = endsWith(newTermName(name)) - def indexOf(ch: Char) = { - val idx = pos(ch) - if (idx == length) -1 else idx - } - def indexOf(ch: Char, fromIndex: Int) = { - val idx = pos(ch, fromIndex) - if (idx == length) -1 else idx - } - def lastIndexOf(ch: Char) = lastPos(ch) + /** Rewrite the confusing failure indication via result == length to + * the normal failure indication via result == -1. + */ + private def fixIndexOf(idx: Int): Int = if (idx == length) -1 else idx + + def indexOf(ch: Char) = fixIndexOf(pos(ch)) + def indexOf(ch: Char, fromIndex: Int) = fixIndexOf(pos(ch, fromIndex)) + def indexOf(s: String) = fixIndexOf(pos(s)) + + /** The lastPos methods already return -1 on failure. */ + def lastIndexOf(ch: Char): Int = lastPos(ch) + def lastIndexOf(s: String): Int = toString lastIndexOf s /** Replace all occurrences of `from` by `to` in * name; result is always a term name. @@ -392,9 +401,24 @@ trait Names extends api.Names { * reap the benefits because an (unused) $outer pointer so it is not single-field. */ final class NameOps[T <: Name](name: T) { - def stripSuffix(suffix: Name): T = if (name endsWith suffix) dropRight(suffix.length) else name - def dropRight(n: Int): T = name.subName(0, name.length - n).asInstanceOf[T] - def drop(n: Int): T = name.subName(n, name.length).asInstanceOf[T] + import NameTransformer._ + def stripSuffix(suffix: String): T = stripSuffix(suffix: TermName) + def stripSuffix(suffix: Name): T = if (name endsWith suffix) dropRight(suffix.length) else name + def take(n: Int): T = name.subName(0, n).asInstanceOf[T] + def drop(n: Int): T = name.subName(n, name.length).asInstanceOf[T] + def dropRight(n: Int): T = name.subName(0, name.length - n).asInstanceOf[T] + def dropLocal: TermName = name.toTermName stripSuffix LOCAL_SUFFIX_STRING + def dropSetter: TermName = name.toTermName stripSuffix SETTER_SUFFIX_STRING + def dropModule: T = this stripSuffix MODULE_SUFFIX_STRING + def localName: TermName = getterName append LOCAL_SUFFIX_STRING + def setterName: TermName = getterName append SETTER_SUFFIX_STRING + def getterName: TermName = dropTraitSetterSeparator.dropSetter.dropLocal + + private def dropTraitSetterSeparator: TermName = + name indexOf TRAIT_SETTER_SEPARATOR_STRING match { + case -1 => name.toTermName + case idx => name.toTermName drop idx drop TRAIT_SETTER_SEPARATOR_STRING.length + } } implicit val NameTag = ClassTag[Name](classOf[Name]) |