From 2235f9c0a9d1bce9fa6e8ff684873079cea4bd9f Mon Sep 17 00:00:00 2001
From: Max Wash <mbswash@gmail.com>
Date: Thu, 10 Apr 2025 13:04:12 +0100
Subject: [PATCH] lang: change symbols for properties and atoms to -> and $
 respectively

---
 lang/ast/class.c     | 9 +++++----
 lang/ast/expr/expr.c | 1 +
 lang/ast/expr/expr.h | 2 ++
 lang/lex.c           | 2 +-
 4 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/lang/ast/class.c b/lang/ast/class.c
index 32de36a..6d72d4f 100644
--- a/lang/ast/class.c
+++ b/lang/ast/class.c
@@ -15,7 +15,7 @@ struct class_parser_state {
 	int s_prev_token;
 };
 
-static struct token_parse_result parse_dollar(
+static struct token_parse_result parse_hyphen_right_angle(
 	struct ivy_parser *ctx, struct ivy_token *tok)
 {
 	struct class_parser_state *state
@@ -146,8 +146,9 @@ static void to_string(struct ivy_ast_node *node, b_string *str)
 {
 	struct ivy_ast_class_node *c = (struct ivy_ast_class_node *)node;
 
-	b_string_append_cstrf(str, "%s (%s)", ivy_ast_node_type_to_string(node->n_type),
-	       c->n_ident->t_str);
+	b_string_append_cstrf(
+		str, "%s (%s)", ivy_ast_node_type_to_string(node->n_type),
+		c->n_ident->t_str);
 }
 
 static void init_state(struct ivy_parser *ctx, struct parser_state *sp, uintptr_t arg)
@@ -183,7 +184,7 @@ struct ast_node_type class_node_ops = {
 	.n_state_size = sizeof(struct class_parser_state),
 	.n_node_size = sizeof(struct ivy_ast_class_node),
 	.n_symbol_parsers = {
-		SYM_PARSER(DOLLAR, parse_dollar),
+		SYM_PARSER(HYPHEN_RIGHT_ANGLE, parse_hyphen_right_angle),
 		SYM_PARSER(HYPHEN, parse_hyphen),
 		SYM_PARSER(PLUS, parse_plus),
 	},
diff --git a/lang/ast/expr/expr.c b/lang/ast/expr/expr.c
index 5234438..043a46f 100644
--- a/lang/ast/expr/expr.c
+++ b/lang/ast/expr/expr.c
@@ -90,6 +90,7 @@ struct ast_node_type expr_node_ops = {
 
 		/* operator/block keywords */
 		KW_PARSER(IN, arith_parse_in),
+		KW_PARSER(IS, arith_parse_operator),
 		KW_PARSER(DO, arith_parse_do),
 	}
 };
diff --git a/lang/ast/expr/expr.h b/lang/ast/expr/expr.h
index dfa6d7b..c8c725e 100644
--- a/lang/ast/expr/expr.h
+++ b/lang/ast/expr/expr.h
@@ -149,6 +149,8 @@ extern struct token_parse_result arith_parse_equal_right_angle(
 	struct ivy_parser *ctx, struct ivy_token *tok);
 extern struct token_parse_result arith_parse_in(
 	struct ivy_parser *ctx, struct ivy_token *tok);
+extern struct token_parse_result arith_parse_is(
+	struct ivy_parser *ctx, struct ivy_token *tok);
 extern struct token_parse_result arith_parse_do(
 	struct ivy_parser *ctx, struct ivy_token *tok);
 
diff --git a/lang/lex.c b/lang/lex.c
index dc94217..ebbb103 100644
--- a/lang/lex.c
+++ b/lang/lex.c
@@ -773,7 +773,7 @@ static enum ivy_status read_symbol(struct ivy_lexer *lex)
 		return read_block_comment(lex);
 	case IVY_SYM_DOUBLE_HYPHEN:
 		return read_line_comment(lex);
-	case IVY_SYM_HASH:
+	case IVY_SYM_DOLLAR:
 		return read_atom(lex);
 	case IVY_SYM_LEFT_BRACE:
 		push_symbol(lex, node->s_id);