started a subdir for the book

3 files changed, 38 insertions, 0 deletions

diff --git a/book/examples/chapter7/Query.gf b/book/examples/chapter7/Query.gf
new file mode 100644
index 000000000..b6f83e357
--- /dev/null
+++ b/book/examples/chapter7/Query.gf
@@ -0,0 +1,12 @@
+abstract Query = {
+  flags startcat=Question ;
+  cat 
+    Answer ; Question ; Object ;
+  fun 
+    Even   : Object -> Question ;
+    Odd    : Object -> Question ;
+    Prime  : Object -> Question ;
+    Number : Int -> Object ;
+    Yes    : Answer ;
+    No     : Answer ;
+}
diff --git a/book/examples/chapter7/QueryEng.gf b/book/examples/chapter7/QueryEng.gf
new file mode 100644
index 000000000..cc14d5eb7
--- /dev/null
+++ b/book/examples/chapter7/QueryEng.gf
@@ -0,0 +1,13 @@
+concrete QueryEng of Query = {
+  lincat 
+    Answer, Question, Object = Str ;
+  lin 
+    Even  = pred "even" ;
+    Odd   = pred "odd" ;
+    Prime = pred "prime" ;
+    Number i = i.s ;
+    Yes = "yes" ;
+    No = "no" ;
+  oper
+    pred : Str -> Str -> Str = \f,x -> "is" ++ x ++ f ;
+}
diff --git a/book/examples/chapter7/QueryFin.gf b/book/examples/chapter7/QueryFin.gf
new file mode 100644
index 000000000..b3461e34a
--- /dev/null
+++ b/book/examples/chapter7/QueryFin.gf
@@ -0,0 +1,13 @@
+concrete QueryFin of Query = {
+  lincat 
+    Answer, Question, Object = Str ;
+  lin 
+    Even  = pred "parillinen" ;
+    Odd   = pred "pariton" ;
+    Prime = pred "alkuluku" ;
+    Number i = i.s ;
+    Yes = "kyllä" ;
+    No = "ei" ;
+  oper
+    pred : Str -> Str -> Str = \f,x -> "onko" ++ x ++ f ;
+}