Split list compilation logic into its own file.

1 files changed, 61 insertions, 0 deletions

diff --git a/src/compile/list.c b/src/compile/list.c
new file mode 100644
index 00000000..01036cda
--- /dev/null
+++ b/src/compile/list.c
@@ -0,0 +1,61 @@
+// Compilation logic for lists
+
+#include <gc.h>
+#include <glob.h>
+#include <gmp.h>
+#include <uninorm.h>
+
+#include "../ast.h"
+#include "../compile.h"
+#include "../config.h"
+#include "../environment.h"
+#include "../stdlib/text.h"
+#include "../stdlib/util.h"
+
+static ast_t *add_to_list_comprehension(ast_t *item, ast_t *subject) {
+    return WrapAST(item, MethodCall, .name = "insert", .self = subject, .args = new (arg_ast_t, .value = item));
+}
+
+public
+Text_t compile_typed_list(env_t *env, ast_t *ast, type_t *list_type) {
+    DeclareMatch(list, ast, List);
+    if (!list->items) return Text("(List_t){.length=0}");
+
+    type_t *item_type = Match(list_type, ListType)->item_type;
+
+    int64_t n = 0;
+    for (ast_list_t *item = list->items; item; item = item->next) {
+        ++n;
+        if (item->ast->tag == Comprehension) goto list_comprehension;
+    }
+
+    {
+        env_t *scope = item_type->tag == EnumType ? with_enum_scope(env, item_type) : env;
+        if (is_incomplete_type(item_type)) code_err(ast, "This list's type can't be inferred!");
+        Text_t code = Texts("TypedListN(", compile_type(item_type), ", ", String(n));
+        for (ast_list_t *item = list->items; item; item = item->next) {
+            code = Texts(code, ", ", compile_to_type(scope, item->ast, item_type));
+        }
+        return Texts(code, ")");
+    }
+
+list_comprehension: {
+    env_t *scope = item_type->tag == EnumType ? with_enum_scope(env, item_type) : fresh_scope(env);
+    static int64_t comp_num = 1;
+    const char *comprehension_name = String("list$", comp_num++);
+    ast_t *comprehension_var =
+        LiteralCode(Texts("&", comprehension_name), .type = Type(PointerType, .pointed = list_type, .is_stack = true));
+    Closure_t comp_action = {.fn = add_to_list_comprehension, .userdata = comprehension_var};
+    scope->comprehension_action = &comp_action;
+    Text_t code = Texts("({ List_t ", comprehension_name, " = {};");
+    // set_binding(scope, comprehension_name, list_type, comprehension_name);
+    for (ast_list_t *item = list->items; item; item = item->next) {
+        if (item->ast->tag == Comprehension) code = Texts(code, "\n", compile_statement(scope, item->ast));
+        else code = Texts(code, compile_statement(env, add_to_list_comprehension(item->ast, comprehension_var)));
+    }
+    code = Texts(code, " ", comprehension_name, "; })");
+    return code;
+}
+}
+
+// vim: ts=4 sw=0 et cino=L2,l1,(0,W4,m1,\:0