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author | Martin Odersky <odersky@gmail.com> | 2017-02-18 12:55:23 +0100 |
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committer | Martin Odersky <odersky@gmail.com> | 2017-02-18 12:55:23 +0100 |
commit | cf9741297a8bb91a26841d970be38436565a62c8 (patch) | |
tree | dee17631dd14c0aa24cff9db35a0921b9dbae035 /tests/run | |
parent | e9fecd393a3c355a68207da4bb1fa9fcf47eafc9 (diff) | |
download | dotty-cf9741297a8bb91a26841d970be38436565a62c8.tar.gz dotty-cf9741297a8bb91a26841d970be38436565a62c8.tar.bz2 dotty-cf9741297a8bb91a26841d970be38436565a62c8.zip |
Bonus test: builder pattern
This shows that the builder pattern can be expressed
with implicit function types.
Diffstat (limited to 'tests/run')
-rw-r--r-- | tests/run/builder.check | 1 | ||||
-rw-r--r-- | tests/run/builder.scala | 51 |
2 files changed, 52 insertions, 0 deletions
diff --git a/tests/run/builder.check b/tests/run/builder.check new file mode 100644 index 000000000..48f7d9253 --- /dev/null +++ b/tests/run/builder.check @@ -0,0 +1 @@ +Table(Row(Cell(A1), Cell(B1)), Row(Cell(A2), Cell(B2))) diff --git a/tests/run/builder.scala b/tests/run/builder.scala new file mode 100644 index 000000000..532a95071 --- /dev/null +++ b/tests/run/builder.scala @@ -0,0 +1,51 @@ +import collection.mutable.ArrayBuffer + +class Table { + val rows = new ArrayBuffer[Row] + def add(r: Row): Unit = rows += r + override def toString = rows.mkString("Table(", ", ", ")") +} + +class Row { + val cells = new ArrayBuffer[Cell] + def add(c: Cell): Unit = cells += c + override def toString = cells.mkString("Row(", ", ", ")") +} + +class Cell(elem: String) { + override def toString = s"Cell($elem)" +} + +object Test { + + def table(init: implicit Table => Unit) = { + implicit val t = new Table + init + t + } + + def row(init: implicit Row => Unit)(implicit t: Table) = { + implicit val r = new Row + init + t.add(r) + } + + def cell(str: String)(implicit r: Row) = + r.add(new Cell(str)) + + val data = + table { + row { + cell("A1") + cell("B1") + } + row { + cell("A2") + cell("B2") + } + } + + def main(args: Array[String]) = { + println(data) + } +} |