From 2a56c6540e914611ac12647e157aec4c5c595758 Mon Sep 17 00:00:00 2001
From: Boyang Han
Date: Fri, 19 Mar 2021 01:28:56 +0800
Subject: Add toString method to BitPat (#1819)

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>---
 src/test/scala/chiselTests/util/BitPatSpec.scala | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 src/test/scala/chiselTests/util/BitPatSpec.scala

(limited to 'src/test/scala/chiselTests/util/BitPatSpec.scala')

diff --git a/src/test/scala/chiselTests/util/BitPatSpec.scala b/src/test/scala/chiselTests/util/BitPatSpec.scala
new file mode 100644
index 00000000..a6c0acf7
--- /dev/null
+++ b/src/test/scala/chiselTests/util/BitPatSpec.scala
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: Apache-2.0
+
+package chiselTests.util
+
+import chisel3.util.BitPat
+import org.scalatest.flatspec.AnyFlatSpec
+import org.scalatest.matchers.should.Matchers
+
+
+class BitPatSpec extends AnyFlatSpec with Matchers {
+  behavior of classOf[BitPat].toString
+
+  it should "convert a BitPat to readable form" in {
+    val testPattern = "0" * 32 + "1" * 32 + "?" * 32 + "?01" * 32
+    BitPat("b" + testPattern).toString should be (s"BitPat($testPattern)")
+  }
+}
-- 
cgit v1.2.3


From 6ccff4848fcf55cb1e865738a67f2bec25988ac8 Mon Sep 17 00:00:00 2001
From: Jiuyang Liu
Date: Wed, 26 May 2021 02:35:34 +0800
Subject: throw exception if BitPat width is 0  (#1920)

* spot a bug when BitPat width is 0

* fix #1919

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>---
 src/test/scala/chiselTests/util/BitPatSpec.scala | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/test/scala/chiselTests/util/BitPatSpec.scala')

diff --git a/src/test/scala/chiselTests/util/BitPatSpec.scala b/src/test/scala/chiselTests/util/BitPatSpec.scala
index a6c0acf7..ca8dd85c 100644
--- a/src/test/scala/chiselTests/util/BitPatSpec.scala
+++ b/src/test/scala/chiselTests/util/BitPatSpec.scala
@@ -14,4 +14,8 @@ class BitPatSpec extends AnyFlatSpec with Matchers {
     val testPattern = "0" * 32 + "1" * 32 + "?" * 32 + "?01" * 32
     BitPat("b" + testPattern).toString should be (s"BitPat($testPattern)")
   }
+
+  it should "not fail if BitPat width is 0" in {
+    intercept[IllegalArgumentException]{BitPat("b")}
+  }
 }
-- 
cgit v1.2.3


From e74b978d5188d9cd28e3520912d858d228136e75 Mon Sep 17 00:00:00 2001
From: Jiuyang Liu
Date: Fri, 27 Aug 2021 04:37:34 +0800
Subject: add new APIs to BitPat (#2076)

* add Y and N to BitPat.

* add ## for BitPat.

* add rawString API.

* use rawString in decoder

* add select and slice to BitPat.---
 src/test/scala/chiselTests/util/BitPatSpec.scala | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

(limited to 'src/test/scala/chiselTests/util/BitPatSpec.scala')

diff --git a/src/test/scala/chiselTests/util/BitPatSpec.scala b/src/test/scala/chiselTests/util/BitPatSpec.scala
index ca8dd85c..0c83493f 100644
--- a/src/test/scala/chiselTests/util/BitPatSpec.scala
+++ b/src/test/scala/chiselTests/util/BitPatSpec.scala
@@ -15,7 +15,30 @@ class BitPatSpec extends AnyFlatSpec with Matchers {
     BitPat("b" + testPattern).toString should be (s"BitPat($testPattern)")
   }
 
+  it should "convert a BitPat to raw form" in {
+    val testPattern = "0" * 32 + "1" * 32 + "?" * 32 + "?01" * 32
+    BitPat("b" + testPattern).rawString should be(testPattern)
+  }
+
   it should "not fail if BitPat width is 0" in {
     intercept[IllegalArgumentException]{BitPat("b")}
   }
+
+  it should "contact BitPat via ##" in {
+    (BitPat.Y(4) ## BitPat.dontCare(3) ## BitPat.N(2)).toString should be (s"BitPat(1111???00)")
+  }
+
+  it should "index and return new BitPat" in {
+    val b = BitPat("b1001???")
+    b(0) should be(BitPat.dontCare(1))
+    b(6) should be(BitPat.Y())
+    b(5) should be(BitPat.N())
+  }
+
+  it should "slice and return new BitPat" in {
+    val b = BitPat("b1001???")
+    b(2, 0) should be(BitPat("b???"))
+    b(4, 3) should be(BitPat("b01"))
+    b(6, 6) should be(BitPat("b1"))
+  }
 }
-- 
cgit v1.2.3