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author | Felix Mulder <felix.mulder@gmail.com> | 2016-11-02 11:08:28 +0100 |
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committer | Guillaume Martres <smarter@ubuntu.com> | 2016-11-22 01:35:07 +0100 |
commit | 8a61ff432543a29234193cd1f7c14abd3f3d31a0 (patch) | |
tree | a8147561d307af862c295cfc8100d271063bb0dd /compiler/src/dotty/tools/dotc/core/TypeParamInfo.scala | |
parent | 6a455fe6da5ff9c741d91279a2dc6fe2fb1b472f (diff) | |
download | dotty-8a61ff432543a29234193cd1f7c14abd3f3d31a0.tar.gz dotty-8a61ff432543a29234193cd1f7c14abd3f3d31a0.tar.bz2 dotty-8a61ff432543a29234193cd1f7c14abd3f3d31a0.zip |
Move compiler and compiler tests to compiler dir
Diffstat (limited to 'compiler/src/dotty/tools/dotc/core/TypeParamInfo.scala')
-rw-r--r-- | compiler/src/dotty/tools/dotc/core/TypeParamInfo.scala | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/compiler/src/dotty/tools/dotc/core/TypeParamInfo.scala b/compiler/src/dotty/tools/dotc/core/TypeParamInfo.scala new file mode 100644 index 000000000..647c895db --- /dev/null +++ b/compiler/src/dotty/tools/dotc/core/TypeParamInfo.scala @@ -0,0 +1,40 @@ +package dotty.tools.dotc.core + +import Names.TypeName +import Contexts.Context +import Types.{Type, TypeBounds} + +/** A common super trait of Symbol and LambdaParam. + * Used to capture the attributes of type parameters which can be implemented as either. + */ +trait TypeParamInfo { + + /** Is this the info of a type parameter? Will return `false` for symbols + * that are not type parameters. + */ + def isTypeParam(implicit ctx: Context): Boolean + + /** The name of the type parameter */ + def paramName(implicit ctx: Context): TypeName + + /** The info of the type parameter */ + def paramBounds(implicit ctx: Context): TypeBounds + + /** The info of the type parameter as seen from a prefix type. + * For type parameter symbols, this is the `memberInfo` as seen from `prefix`. + * For type lambda parameters, it's the same as `paramBounds` as + * `asSeenFrom` has already been applied to the whole type lambda. + */ + def paramBoundsAsSeenFrom(pre: Type)(implicit ctx: Context): TypeBounds + + /** The parameter bounds, or the completer if the type parameter + * is an as-yet uncompleted symbol. + */ + def paramBoundsOrCompleter(implicit ctx: Context): Type + + /** The variance of the type parameter */ + def paramVariance(implicit ctx: Context): Int + + /** A type that refers to the parameter */ + def paramRef(implicit ctx: Context): Type +}
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