From 40f3a2aa5c853d3b821debeafcf07b8cf4cf204f Mon Sep 17 00:00:00 2001
From: Zuhaitz Méndez Fernández de Aránguiz <zuhaitz@debian>
Date: Thu, 22 Jan 2026 23:21:15 +0000
Subject: Lambda fix

---
 src/parser/parser_decl.c | 18 +++++++++++++++++-
 src/parser/parser_expr.c | 13 +++++++++++++
 2 files changed, 30 insertions(+), 1 deletion(-)

(limited to 'src/parser')

diff --git a/src/parser/parser_decl.c b/src/parser/parser_decl.c
index 63ec329..0cd2990 100644
--- a/src/parser/parser_decl.c
+++ b/src/parser/parser_decl.c
@@ -532,7 +532,23 @@ ASTNode *parse_var_decl(ParserContext *ctx, Lexer *l)
         {
             if (init->type_info)
             {
-                type_obj = init->type_info;
+                // Create new type to avoid inheriting is_const from builtins like true/false
+                type_obj = type_new(init->type_info->kind);
+                if (init->type_info->name)
+                {
+                    type_obj->name = xstrdup(init->type_info->name);
+                }
+                if (init->type_info->inner)
+                {
+                    type_obj->inner = init->type_info->inner; // Shallow copy for inner
+                }
+                // Copy function type args for lambda/closure support
+                if (init->type_info->args && init->type_info->arg_count > 0)
+                {
+                    type_obj->args = init->type_info->args;
+                    type_obj->arg_count = init->type_info->arg_count;
+                    type_obj->is_varargs = init->type_info->is_varargs;
+                }
                 type = type_to_string(type_obj);
             }
             else if (init->type == NODE_EXPR_SLICE)
diff --git a/src/parser/parser_expr.c b/src/parser/parser_expr.c
index 7993423..4a4f906 100644
--- a/src/parser/parser_expr.c
+++ b/src/parser/parser_expr.c
@@ -4769,6 +4769,10 @@ ASTNode *parse_arrow_lambda_single(ParserContext *ctx, Lexer *l, char *param_nam
     t->arg_count = 1;
     lambda->type_info = t;
 
+    // Register parameter in scope for body parsing
+    enter_scope(ctx);
+    add_symbol(ctx, param_name, "int", type_new(TYPE_INT));
+
     // Body parsing...
     ASTNode *body_block = NULL;
     if (lexer_peek(l).type == TOK_LBRACE)
@@ -4789,6 +4793,7 @@ ASTNode *parse_arrow_lambda_single(ParserContext *ctx, Lexer *l, char *param_nam
     lambda->lambda.is_expression = 1;
     register_lambda(ctx, lambda);
     analyze_lambda_captures(ctx, lambda);
+    exit_scope(ctx);
     return lambda;
 }
 
@@ -4812,6 +4817,13 @@ ASTNode *parse_arrow_lambda_multi(ParserContext *ctx, Lexer *l, char **param_nam
     }
     lambda->type_info = t;
 
+    // Register parameters in scope for body parsing
+    enter_scope(ctx);
+    for (int i = 0; i < num_params; i++)
+    {
+        add_symbol(ctx, param_names[i], "int", type_new(TYPE_INT));
+    }
+
     // Body parsing...
     ASTNode *body_block = NULL;
     if (lexer_peek(l).type == TOK_LBRACE)
@@ -4832,5 +4844,6 @@ ASTNode *parse_arrow_lambda_multi(ParserContext *ctx, Lexer *l, char **param_nam
     lambda->lambda.is_expression = 1;
     register_lambda(ctx, lambda);
     analyze_lambda_captures(ctx, lambda);
+    exit_scope(ctx);
     return lambda;
 }
-- 
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