From 20e7d74733193bd19106b2b2887b4f08088efa29 Mon Sep 17 00:00:00 2001
From: Viktor Kuncak <viktor.kuncak@epfl.ch>
Date: Thu, 23 Apr 2015 20:04:49 +0200
Subject: [PATCH] writing on pure scala
---
doc/purescala.rst | 25 ++++++++++++++++---------
1 file changed, 16 insertions(+), 9 deletions(-)
diff --git a/doc/purescala.rst b/doc/purescala.rst
index 3c10fd4bf..53b497aaa 100644
--- a/doc/purescala.rst
+++ b/doc/purescala.rst
@@ -1,29 +1,36 @@
.. _purescala:
-Pure Scala: Leon's Core Input Language
-======================================
+Pure Scala: Leon's Language
+===========================
+The input to Leon is a purely functional subset of Scala,
+which we call **Pure Scala**. Constructs specific for Leon
+are defined inside Leon's libraries in package `leon` and
+its subpackages. Leon invokes standard `scalac` compiler on
+the input file, then performs additional checks to ensure
+that the given program belongs to Pure Scala.
-Leon supports two kinds of top-level declarations:
+Pure Scala supports two kinds of top-level declarations:
-1. ADT definitions in the form of an abstract class and case classes/objects
+1. Algebraic Data Type (ADT) definitions in the form of an
+ abstract class and case classes/objects
.. code-block:: scala
- abstract class Foo
- case class Bar(a: Int) extends Foo
- case object Gee extends Foo
+ abstract class MyList
+ case object MyEmpty extends MyList
+ case class MyCons(elem: BigInt, rest: MyList) extends MyList
2. Objects/modules, for grouping classes and functions
.. code-block:: scala
object Specs {
- def foo(a: Int) = {
+ def increment(a: BigInt): BigInt = {
a + 1
}
- case class Foo(a: Int)
+ case class Identifier(id: BigInt)
}
--
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