From 4b52f663c6644838b7154ed0365abb809beed68f Mon Sep 17 00:00:00 2001
From: tocariimaa <tocariimaa@noreply.codeberg.org>
Date: Tue, 21 Jan 2025 18:16:47 -0300
Subject: [PATCH] grammar: specify expressions

---
 docs/grammar.abnf | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/docs/grammar.abnf b/docs/grammar.abnf
index 0517348..4677e66 100644
--- a/docs/grammar.abnf
+++ b/docs/grammar.abnf
@@ -16,11 +16,21 @@ funcargs      = expr-list
 
 array-literal = "[" expr-list "]"
 
-expr-list 	= expr *("," expr) [","]						; Allows a trailling comma
-expr 		= number
+; See `OperatorTable` at compiler/parse.c for the precedences
+binary-operator = "+" / "-" / "*" / "/" / "<" / "<=" / ">" / ">=" / "==" / "!="
+unary-operator = "-"
+ident-or-call = ident / function-call
+
+atom		= number
 			/ array-literal
-			/ function-call
 			/ string-literal
+			/ ident-or-call
+			/ "(" expr ")"
+
+unary 		= [unary-operator] atom
+expr 		= unary [binary-operator expr]
+
+expr-list 	= expr *("," expr) [","]						; Allows a trailling comma
 
 pragma-directive 	= ident *("," ident) [","]
 pragma 				= "#" "[" pragma-directive "]"