关于模式匹配语句的Scala 2.8.0.RC2编译器问题？
为什么以下模块不能在Scala 2.8.RC [1,2]上编译？
object Test {
import util.matching.Regex._
val pVoid = """s*voids*""".r
val pVoidPtr = """s*(consts+)?voids**s*""".r
val pCharPtr = """s*(consts+)GLchars**s*""".r
val pIntPtr = """s*(consts+)?GLints**s*""".r
val pUintPtr = """s*(consts+)?GLuints**s*""".r
val pFloatPtr = """s*(consts+)?GLfloats**s*""".r
val pDoublePtr = """s*(consts+)?GLdoubles**s*""".r
val pShortPtr = """s*(consts+)?GLshorts**s*""".r
val pUshortPtr = """s*(consts+)?GLushorts**s*""".r
val pInt64Ptr = """s*(consts+)?GLint64s**s*""".r
val pUint64Ptr = """s*(consts+)?GLuint64s**s*""".r
def mapType(t: String): String = t.trim match {
case pVoid() => "Unit"
case pVoidPtr() => "ByteBuffer"
case pCharPtr() => "CharBuffer"
case pIntPtr() | pUintPtr() => "IntBuffer"
case pFloatPtr() => "FloatBuffer"
case pShortPtr() | pUshortPtr() => "ShortBuffer"
case pDoublePtr() => "DoubleBuffer"
case pInt64Ptr() | pUint64Ptr() => "LongBuffer"
case x => x
}
}
object Test {
import util.matching.Regex._
val PVoid = """s*voids*""".r
val PVoidPtr = """s*(consts+)?voids**s*""".r
val PCharPtr = """s*(consts+)GLchars**s*""".r
val PIntPtr = """s*(consts+)?GLints**s*""".r
val PUintPtr = """s*(consts+)?GLuints**s*""".r
val PFloatPtr = """s*(consts+)?GLfloats**s*""".r
val PDoublePtr = """s*(consts+)?GLdoubles**s*""".r
val PShortPtr = """s*(consts+)?GLshorts**s*""".r
val PUshortPtr = """s*(consts+)?GLushorts**s*""".r
val PInt64Ptr = """s*(consts+)?GLint64s**s*""".r
val PUint64Ptr = """s*(consts+)?GLuint64s**s*""".r
def mapType(t: String): String = t.trim match {
case PVoid() => "Unit"
case PVoidPtr() => "ByteBuffer"
case PCharPtr() => "CharBuffer"
case PIntPtr() | PUintPtr() => "IntBuffer"
case PFloatPtr() => "FloatBuffer"
case PShortPtr() | PUshortPtr() => "ShortBuffer"
case PDoublePtr() => "DoubleBuffer"
case PInt64Ptr() | PUint64Ptr() => "LongBuffer"
case x => x
}
}
Exception in thread "main" java.lang.Error:ch.epfl.lamp.fjbg.JCode$OffsetTooBigException: offset too big to fit in 16 bits: 43772
at ch.epfl.lamp.fjbg.JFieldOrMethod.writeTo(JFieldOrMethod.java:114)
at ch.epfl.lamp.fjbg.JClass.writeTo(JClass.java:315)
没有找到相关结果
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1 个回复
镶骄册筷
作为提取器模式。你可以这样做，因为这个类定义了一个方法。在模式匹配中，对提取器模式的引用必须以大写字母开头。val PVoid = """s*voids*""".r def mapType(t: String): String = t.trim match { case PVoid() => "Unit" case x => x }object Test { import util.matching.Regex._ val PVoid = """s*voids*""".r val PVoidPtr = """s*(consts+)?voids**s*""".r val PCharPtr = """s*(consts+)GLchars**s*""".r val PIntPtr = """s*(consts+)?GLints**s*""".r val PUintPtr = """s*(consts+)?GLuints**s*""".r val PFloatPtr = """s*(consts+)?GLfloats**s*""".r val PDoublePtr = """s*(consts+)?GLdoubles**s*""".r val PShortPtr = """s*(consts+)?GLshorts**s*""".r val PUshortPtr = """s*(consts+)?GLushorts**s*""".r val PInt64Ptr = """s*(consts+)?GLint64s**s*""".r val PUint64Ptr = """s*(consts+)?GLuint64s**s*""".r def mapType(t: String): String = t.trim match { case PVoid() => "Unit" case PVoidPtr() => "ByteBuffer" case PCharPtr() => "CharBuffer" case PIntPtr() | PUintPtr() => "IntBuffer" case x => x match { case PFloatPtr() => "FloatBuffer" case PShortPtr() | PUshortPtr() => "ShortBuffer" case PDoublePtr() => "DoubleBuffer" case PInt64Ptr() | PUint64Ptr() => "LongBuffer" case x => x } } }