adding control

examples/simple.spf

@@ -0,0 +1,8 @@
+entier pi = 314;
+entier pi2 = 3;
+
+pi = 3;
+
+tant que pi vaut pi2 faire {
+	afficher "bonjour";
+}

spf.lark

@@ -8,11 +8,16 @@ instruction: keyword expression TERMINAL
 keyword: ADD_KW 
 	   | SHOW_KW
 
-expression: literal
-		  | list
-		  | range
-		  //| expression operator expression
-		  //| operator expression
+expression: expressionleft
+		  | gen_op
+
+expressionleft: literal 
+              | list
+              | range
+			  | VARIABLE
+
+gen_op: expressionleft SAME_OP expression
+	  | expressionleft DIFF_OP expression
 
 type: BOOL_TYPE
 	| INT_TYPE
@@ -23,10 +28,10 @@ declaration: VARIABLE (EQUAL_SIGN expression)?
 
 assignation: VARIABLE EQUAL_SIGN expression
 
-loop: WHILES_KW expression WHILEE_KW "{" (instruction)* "}"
+loop: "tant" "que" expression "faire" "{" (instruction)* "}"
 
 literal: ENTIER
-	   | BOOLEEN
+	   | booleen 
 	   | ESCAPED_STRING
 
 list: "[" expression? ("," expression)* "]"
@@ -54,7 +59,7 @@ EQUAL_SIGN: "="
 
 ENTIER: /[1-9][0-9]*/
 
-BOOLEEN: TRUE_KW 
+booleen: TRUE_KW 
 	   | FALSE_KW
 
 PLUS_SIGN: "+"
@@ -67,10 +72,11 @@ INT_TYPE: "entier"
 STR_TYPE: "texte"
 LIST_TYPE: "liste"
 
+SAME_OP: "==" | "vaut"
+DIFF_OP: "!=" | "ne" "vaut" "pas"
+
 ADD_KW: "ajouter"
 SHOW_KW: "afficher"
-WHILES_KW: "tant que"
-WHILEE_KW: "faire"
 
 TRUE_KW: "vrai"
 FALSE_KW: "faux"