From f2a82451ac8e3cc6f1ffaaa32f8867049d62ac72 Mon Sep 17 00:00:00 2001
From: Anthony Debucquoy <debucquoy.anthony@gmail.com>
Date: Sun, 16 Mar 2025 11:50:54 +0100
Subject: [PATCH] adding a bit of lexer

---
 spf.lark | 36 +++++++++++++++++++++++++++++++++---
 spf.py   |  2 +-
 2 files changed, 34 insertions(+), 4 deletions(-)

diff --git a/spf.lark b/spf.lark
index d542453..3aa6a56 100644
--- a/spf.lark
+++ b/spf.lark
@@ -3,8 +3,8 @@ start: (instruction)* TERMINAL
 instruction: KEYWORD TERMINAL
 		   | declaration TERMINAL
 
-declaration: TYPE NOM
-		   | TYPE NOM "=" expression
+declaration: TYPE VARIABLE
+		   | TYPE VARIABLE "=" expression
 
 expression: literal
 		  | list
@@ -12,9 +12,29 @@ expression: literal
 		  | expression operator expression
 		  | operator expression
 
+literal: ENTIER
+	   | BOOLEEN
+	   | texte
+
+texte: "\"" STRING "\""
+
+list: "[" expression? ("," expression)* "]"
+
+range: "[" ENTIER? ":" ENTIER? "]"
+
 controls: test
 		| loop
 
+operator: PLUS
+		| MINUS
+		| TIMES
+		| DIVIDE // TODO: not complete
+
+PLUS: "+"
+MINUS: "-"
+TIMES: "*"
+DIVIDE: "/"
+
 test: "si" expression "alors" "{" instruction* "}"
 
 loop: "si" expression "alors" "{" (instruction)* "}"
@@ -24,6 +44,16 @@ COMMENT: "#" /[^\n]/
 
 TERMINAL: ";"
 
-VARIABLE: /([a-z]|[A-Z]|_)+[a-z]|[A-Z]|[0-9]_)+/ // TODO: ajouter accents
+VARIABLE: /([a-z]|[A-Z]|_)+([a-z]|[A-Z]|[0-9]|_)+/ // TODO: ajouter accents
 
 TYPE: "booléen" | "entier" | "texte" | "liste"
+
+KEYWORD: "ajouter" | "afficher"
+
+ENTIER: /[1-9][0-9]*/
+
+BOOLEEN: "vrai" | "faux"
+
+STRING: /\w+/
+
+
diff --git a/spf.py b/spf.py
index f0c006c..0951032 100755
--- a/spf.py
+++ b/spf.py
@@ -32,7 +32,7 @@ def main():
         spf_parser = lark.Lark(grammar, parser="lalr", transformer=SPFTransformer)
 
     with open(args.spf_file) as spf_input:
-        program = spf_input.readall()
+        program = spf_input.read()
         spf_parser.parse(program)