From eaebcd7bdd4d82dac301f0c81679d205f64604e5 Mon Sep 17 00:00:00 2001
From: Lorenzo Torres <lorenzo@sagittarius-a.org>
Date: Mon, 1 Dec 2025 22:32:41 +0100
Subject: [PATCH] preliminary work on the `loop` parsing

---
 lexer.c  | 9 +++++++--
 lexer.h  | 1 +
 parser.c | 5 +++++
 parser.h | 5 +++++
 4 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/lexer.c b/lexer.c
index 266001b..6167bfa 100644
--- a/lexer.c
+++ b/lexer.c
@@ -262,8 +262,13 @@ static bool parse_special(lexer *l)
 		l->index += 1;
 		return true;
 	case '.':
-		add_token(l, TOKEN_DOT, 1);
-		l->index += 1;
+		if (l->source[l->index+1] == '.') {
+			add_token(l, TOKEN_DOUBLE_DOT, 2);
+			l->index += 2;
+		}  else {
+			add_token(l, TOKEN_DOT, 1);
+			l->index += 1;
+		}
 		return true;
 	case ',':
 		add_token(l, TOKEN_COMMA, 1);
diff --git a/lexer.h b/lexer.h
index 28b11e3..c0f071c 100644
--- a/lexer.h
+++ b/lexer.h
@@ -41,6 +41,7 @@ typedef enum {
 	TOKEN_COLON, // :
 	TOKEN_SEMICOLON, // ;
 	TOKEN_DOT, // .
+	TOKEN_DOUBLE_DOT, // ..
 	TOKEN_BANG, // !
 	TOKEN_COMMA, // ,
 	TOKEN_LPAREN, // (
diff --git a/parser.c b/parser.c
index a827fb5..c20c4cb 100644
--- a/parser.c
+++ b/parser.c
@@ -373,6 +373,11 @@ ast_node *parse_expression(parser *p)
 	return left;
 }
 
+static ast_node *parse_for(parser *p)
+{
+	return NULL;
+}
+
 static ast_node *parse_statement(parser *p)
 {
 	if (match(p, TOKEN_BREAK)) {
diff --git a/parser.h b/parser.h
index 8946621..3933402 100644
--- a/parser.h
+++ b/parser.h
@@ -151,6 +151,11 @@ typedef struct _ast_node {
 			/* This should be an access. */
 			struct _ast_node *path;
 		} import;
+		struct {
+			struct _ast_node *parameters;
+			struct _ast_node *captures;
+			usize param_len;
+		} fr; // for
 	} expr;
 } ast_node;