roy's comments: chapter 3

diff --git a/methods.dsl.tex b/methods.dsl.tex
index f21cb88..b7103ef 100644 (file)
--- a/methods.dsl.tex
+++ b/methods.dsl.tex
@@ -1,7 +1,7 @@
 An \gls{EDSL} is a language embedded in a host language. \glspl{EDSL} can have
 one or more backends or views. Commonly used views are pretty printing,
 compiling, simulating, verifying and proving the program.  There are several
-techniques available for creating \glspl{EDSL}. Each of them have their own
+techniques available for creating \glspl{EDSL}. They all have their own
 advantages and disadvantages in terms of extendability, typedness and view
 support. In the following subsections each of the main techniques are briefly
 explained.
@@ -9,7 +9,7 @@ explained.
 \section{Deep embedding}
 A deep \gls{EDSL} is a language represented as an \gls{ADT}. Views are
 functions that transform something to the datatype or the other way around. As
-an example we have the simple arithmetic \gls{EDSL} shown in
+an example, take the simple arithmetic \gls{EDSL} shown in
 Listing~\ref{lst:exdeep}.
 
 \begin{lstlisting}[label={lst:exdeep},%
@@ -24,7 +24,7 @@ Listing~\ref{lst:exdeep}.
        | Eq    DSL
 \end{lstlisting}
 
-Deep embedding has the advantage that it is very simple to build and the views
+Deep embedding has the advantage that it is easy to build and views
 are easy to add. To the downside, the expressions created with this language
 are not type-safe. In the given language it is possible to create an expression
 such as \CI{Plus (LitI 4) (LitB True)} that adds a boolean to an integer.
@@ -53,9 +53,9 @@ no compile time guarantee is given that all views support it.
 \end{lstlisting}
 
 \section{Shallow embedding}
-In a shallowly \gls{EDSL} all language constructs are expressed as functions in
-the host language. An evaluator view for our example language then looks
-something like the code shown in Listing~\ref{lst:exshallow}. Note that much of
+In a shallow \gls{EDSL} all language constructs are expressed as functions in
+the host language. An evaluator view for the example language then can be
+implemented as the code shown in Listing~\ref{lst:exshallow}. Note that much of
 the internals of the language can be hidden using monads.
 
 \begin{lstlisting}[label={lst:exshallow},%
@@ -97,7 +97,7 @@ advantages of both shallow and deep embedding. In class-based shallow embedding
 the language constructs are defined as type classes. This language is shown
 with the new method in Listing~\ref{lst:exclassshallow}.
 
-This type of embedding inherits the easiness of adding views from shallow
+This type of embedding inherits the ease of adding views from shallow
 embedding. A view is just a different data type implementing one or more of the
 type classes as shown in the aforementioned Listing where an evaluator and a
 pretty printer are implemented.