From f3178b296833d79b11cc3baeaaf726bc2f99686f Mon Sep 17 00:00:00 2001
From: David Loscutoff <dloscutoff@gmail.com>
Date: Tue, 20 Mar 2018 13:32:36 -0500
Subject: [PATCH] Added SC operator.

---
 Documentation/Operator list.md    | 2 ++
 Documentation/Precedence table.md | 2 +-
 execution.py                      | 9 +++++++++
 operators.py                      | 1 +
 pip.py                            | 2 +-
 5 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/Documentation/Operator list.md b/Documentation/Operator list.md
index 32ba9f2..88fb235 100644
--- a/Documentation/Operator list.md	
+++ b/Documentation/Operator list.md	
@@ -248,6 +248,8 @@ Operators are listed in ASCII order. See also the [precedence table](https://git
 
 <code>RVa</code> Reverse iterable
 
+<code>SCa</code> Swap case: `Hello, World!` becomes `hELLO, wORLD!`
+
 <code>SEa</code> Secant
 
 <code>SGa</code> Sign of number (-1, 0, or 1)
diff --git a/Documentation/Precedence table.md b/Documentation/Precedence table.md
index 0ba8b76..3b24393 100644
--- a/Documentation/Precedence table.md	
+++ b/Documentation/Precedence table.md	
@@ -32,7 +32,7 @@ Regex modifiers | Unary | 
 Remove | Binary | Left | `RM` <br> `DC` | Remove <br> Deletechars | `""` <br> `""` | No <br> Both | Yes <br> Yes
 String repetition | Binary | Left | `X` | Strmul | `""` | Both | Yes
 Strip and trim | Binary | Left | `\|\|` <br> `\|>` <br> `<\|` <br> `TM` | Strip <br> Lstrip <br> Rstrip <br> Trim | `""` <br> `""` <br> `""` <br> `""` | List <br> List <br> List <br> List | Yes <br> Yes <br> Yes <br> Yes
-Strip and trim | Unary | – | `\|\|` <br> `\|>` <br> `<\|` <br> `TM` <br> `LC` <br> `UC` | Strip <br> Lstrip <br> Rstrip <br> Trim <br> Lowercase <br> Uppercase | None <br> None <br> None <br> None <br> None <br> None | List <br> List <br> List <br> List <br> List <br> List | Yes <br> Yes <br> Yes <br> Yes <br> Yes <br> Yes
+Strip and trim | Unary | – | `\|\|` <br> `\|>` <br> `<\|` <br> `TM` <br> `LC` <br> `UC` <br> `SC` | Strip <br> Lstrip <br> Rstrip <br> Trim <br> Lowercase <br> Uppercase <br> Swapcase | None <br> None <br> None <br> None <br> None <br> None <br> None | List <br> List <br> List <br> List <br> List <br> List <br> List | Yes <br> Yes <br> Yes <br> Yes <br> Yes <br> Yes <br> Yes
 Range and to-base | Binary | Left | `,` <br> `\,` <br> `RR` <br> `TB` | Range <br> Inclrange <br> Randrange <br> Tobase | None <br> None <br> `0` <br> `0` | Both <br> Both <br> Both <br> Both | Yes <br> Yes <br> Yes <br> Yes
 Range and to-base | Unary | – | `,` <br> `\,` <br> `RR` <br> `TB` | Rangeto <br> Inclrangeto <br> Randrangeto <br> Tobase | None <br> None <br> None <br> None | Both <br> Both <br> Both <br> Both | Yes <br> Yes <br> Yes <br> Yes
 Low-precedence numeric operators | Binary | Left | `BA` <br> `BO` <br> `BX` <br> `AT` <br> `CM` | Bitwiseand <br> Bitwiseor <br> Bitwisexor <br> Arctan <br> Numcmp | `-1` <br> `0` <br> `0` <br> None <br> `0` | Both <br> Both <br> Both <br> Both <br> No | Yes <br> Yes <br> Yes <br> Yes <br> Yes
diff --git a/execution.py b/execution.py
index bc0f570..c9542ca 100644
--- a/execution.py
+++ b/execution.py
@@ -2889,6 +2889,15 @@ def SUB(self, lhs, rhs):
                           type(lhs), "and", type(rhs))
             return nil
 
+    def SWAPCASE(self, rhs):
+        if type(rhs) is Scalar:
+            return Scalar(str(rhs).swapcase())
+        elif type(rhs) in (Range, Nil):
+            return rhs
+        else:
+            self.err.warn("Unimplemented argtype for SWAPCASE:", type(rhs))
+            return nil
+
     def TANGENT(self, rhs):
         if type(rhs) is Scalar:
             return Scalar(math.tan(rhs.toNumber()))
diff --git a/operators.py b/operators.py
index 0e5aa71..f6c67ef 100644
--- a/operators.py
+++ b/operators.py
@@ -278,6 +278,7 @@ def copy(self):
      ("TM", "TRIM", None, RVALS | IN_LAMBDA | LIST_EACH),
      ("LC", "LOWERCASE", None, RVALS | IN_LAMBDA | LIST_EACH),
      ("UC", "UPPERCASE", None, RVALS | IN_LAMBDA | LIST_EACH),
+     ("SC", "SWAPCASE", None, RVALS | IN_LAMBDA | LIST_EACH),
      ],
     [2, "L",
      (",", "RANGE", None, RVALS | IN_LAMBDA | RANGE_EACH),
diff --git a/pip.py b/pip.py
index d04dfef..76bb503 100755
--- a/pip.py
+++ b/pip.py
@@ -23,7 +23,7 @@
 from execution import ProgramState
 from errors import FatalError
 
-VERSION = "0.18.03.05"
+VERSION = "0.18.03.20"
 
 def pip(code=None, args=None, interactive=True):
     if code or args: