Upversioning whole system to 0.2.0, for flow feature

This is definitely a point version change!

project.clj

@@ -1,4 +1,4 @@
-(defproject mw-parser "0.1.6-SNAPSHOT"
+(defproject mw-parser "0.2.0-SNAPSHOT"
   :description "Parser for production rules for MicroWorld engine"
   :url "http://www.journeyman.cc/microworld"
   :manifest {
@@ -14,5 +14,5 @@
   :dependencies [[org.clojure/clojure "1.11.1"]
                  [org.clojure/tools.trace "0.7.11"]
                  [instaparse "1.4.12"]
-                 [mw-engine "0.1.6-SNAPSHOT"]
+                 [mw-engine "0.2.0-SNAPSHOT"]
                  [trptr/java-wrapper "0.2.3"]])

src/mw_parser/declarative.clj

@@ -88,6 +88,7 @@
               "CHANCE-IN := 'chance in';" 
               "EACH := 'each' | 'every' | 'all';"
               "EQUAL := 'equal to';" 
+              "FIRST := 'first';"
               "FLOW := 'flow' | 'move';" 
               "FROM := 'from';"
               "IF := 'if';" 

src/mw_parser/flow.clj

@@ -9,7 +9,7 @@
   "Grammar for flow rules"
   (join "\n" ["FLOW-RULE := FLOW SPACE QUANTITY SPACE PROPERTY SPACE FROM SPACE SOURCE SPACE TO-HOW SPACE DESTINATION;"
               "PERCENTAGE := NUMBER #'%';"
-              "QUANTITY := PERCENTAGE | NUMBER;"
+              "QUANTITY := PERCENTAGE | NUMBER | SOME;"
               "SOURCE := STATE | STATE SPACE WITH SPACE CONDITIONS;"
               "DESTINATION := STATE | STATE SPACE WITH SPACE FLOW-CONDITIONS;"
               "DETERMINER := MOST | LEAST;"
@@ -18,7 +18,7 @@
               "STATE := SYMBOL;"
               "TO-HOW := TO | TO-EACH | TO-FIRST;"
               "TO-EACH := TO SPACE EACH | TO SPACE ALL;"
-              "TO-FIRST := TO SPACE EACH"
+              "TO-FIRST := TO SPACE FIRST"
               ]))
 
 (def parse-flow

src/mw_parser/generate.clj

@@ -53,9 +53,9 @@
 
 
 (defn generate-conjunct-condition
-  [tree]
   "From this `tree`, assumed to be a syntactically conjunct correct condition clause,
   generate and return the appropriate clojure fragment."
+  [tree]
   (assert-type tree :CONJUNCT-CONDITION)
   (cons 'and (map generate (rest tree))))
 
@@ -93,7 +93,7 @@
          qualifier (generate (nth tree 2))
          expression (generate (nth tree 3))]
      (generate-disjunct-property-condition tree property qualifier expression)))
-  ([tree property qualifier expression]
+  ([_tree property qualifier expression]
    (let [e (list 'some (list 'fn ['i] '(= i value)) (list 'quote expression))]
      (list 'let ['value (list property 'cell)]
            (if (= qualifier '=) e
@@ -314,3 +314,11 @@
       :WITHIN-CONDITION (generate-within-condition tree)
       (map generate tree))
     tree))
+
+;;; Flow rules. A flow rule DOES NOT return a modified world; instead, it 
+;;; returns a PLAN to modify the world, in the form of a sequence of `flows`.
+;;; It is only when the plan is executed that the world is modified.
+;;;
+;;; so we're looking at something like
+;;; (fn [cell world])
+;;;    (if (= (:state cell) (or (:house cell) :house))

src/mw_parser/simplify.clj

@@ -1,7 +1,8 @@
 (ns ^{:doc "Simplify a parse tree."
       :author "Simon Brooke"}
   mw-parser.simplify
-  (:require [mw-engine.utils :refer [member?]]))
+  (:require [clojure.pprint :refer [pprint]]
+            [mw-engine.utils :refer [member?]]))
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;;;;
@@ -26,20 +27,20 @@
 ;;;;
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
-(declare simplify-rule)
+(declare simplify-flow simplify-rule)
 
-(defn simplify-qualifier
-  "Given that this `tree` fragment represents a qualifier, what
-  qualifier is that?"
-  [tree]
-  (cond
-    (empty? tree) nil
-    (and (coll? tree)
-         (member? (first tree) '(:EQUIVALENCE :COMPARATIVE))) tree
-    (coll? (first tree)) (or (simplify-qualifier (first tree))
-                             (simplify-qualifier (rest tree)))
-    (coll? tree) (simplify-qualifier (rest tree))
-    :else tree))
+;; (defn simplify-qualifier
+;;   "Given that this `tree` fragment represents a qualifier, what
+;;   qualifier is that?"
+;;   [tree]
+;;   (cond
+;;     (empty? tree) nil
+;;     (and (coll? tree)
+;;          (#{:EQUIVALENCE :COMPARATIVE} (first tree))) tree
+;;     (coll? (first tree)) (or (simplify-qualifier (first tree))
+;;                              (simplify-qualifier (rest tree)))
+;;     (coll? tree) (simplify-qualifier (rest tree))
+;;     :else tree))
 
 (defn simplify-second-of-two
   "There are a number of possible simplifications such that if the `tree` has
@@ -47,11 +48,11 @@
   [tree]
   (if (= (count tree) 2) (simplify-rule (nth tree 1)) tree))
 
-(defn simplify-quantifier
-  "If this quantifier is a number, 'simplifiy' it into a comparative whose operator is '='
-  and whose quantity is that number. This is actually more complicated but makes generation easier."
-  [tree]
-  (if (number? (second tree)) [:COMPARATIVE '= (second tree)] (simplify-rule (second tree))))
+;; (defn simplify-quantifier
+;;   "If this quantifier is a number, 'simplifiy' it into a comparative whose operator is '='
+;;   and whose quantity is that number. This is actually more complicated but makes generation easier."
+;;   [tree]
+;;   (if (number? (second tree)) [:COMPARATIVE '= (second tree)] (simplify-rule (second tree))))
 
 (defn simplify-rule
   "Simplify/canonicalise this `tree`. Opportunistically replace complex fragments with
@@ -76,12 +77,18 @@
       (remove nil? (map simplify-rule tree)))
     tree))
 
+(defn simplify-determiner-condition
+  [tree])
+
 (defn simplify-flow
   [tree]
   (if (coll? tree)
     (case (first tree)
+      :FLOW nil
       :DETERMINER (simplify-second-of-two tree)
+      :DETERMINER-CONDITION (simplify-determiner-condition tree)
       :SPACE nil
+      :QUANTITY (simplify-second-of-two tree)
       :STATE [:PROPERTY-CONDITION
               [:SYMBOL "state"]
               [:QUALIFIER