First commit

3 files changed, 82 insertions, 0 deletions

diff --git a/src/types/CMakeLists.txt b/src/types/CMakeLists.txt
new file mode 100644
index 0000000..f3f0cb3
--- /dev/null
+++ b/src/types/CMakeLists.txt
@@ -0,0 +1,11 @@
+# nanowasm, a tiny WebAssembly/Wasm interpreter
+# Copyright (C) 2023-2025  Xavier Del Campo Romero
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+target_sources(${PROJECT_NAME} PRIVATE
+    get.c
+    sz.c
+)
diff --git a/src/types/get.c b/src/types/get.c
new file mode 100644
index 0000000..40ce472
--- /dev/null
+++ b/src/types/get.c
@@ -0,0 +1,42 @@
+/*
+ * nanowasm, a tiny WebAssembly/Wasm interpreter
+ * Copyright (C) 2023-2025  Xavier Del Campo Romero
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#include <nanowasm/nw.h>
+#include <nw/types.h>
+#include <nw/log.h>
+
+int nwp_get_type(const nw_varint7 type, enum nw_type *const out)
+{
+    static const struct type
+    {
+        nw_varint7 key;
+        enum nw_type value;
+    } list[] =
+    {
+        {0x7f, NW_TYPE_I32},
+        {0x7e, NW_TYPE_I64},
+        {0x7d, NW_TYPE_F32},
+        {0x7c, NW_TYPE_F64}
+    };
+
+    size_t i;
+
+    for (i = 0; i < sizeof list / sizeof *list; i++)
+    {
+        const struct type *const t = &list[i];
+
+        if (type == t->key)
+        {
+            *out = t->value;
+            return 0;
+        }
+    }
+
+    return -1;
+}
diff --git a/src/types/sz.c b/src/types/sz.c
new file mode 100644
index 0000000..e6660a9
--- /dev/null
+++ b/src/types/sz.c
@@ -0,0 +1,29 @@
+/*
+ * nanowasm, a tiny WebAssembly/Wasm interpreter
+ * Copyright (C) 2023-2025  Xavier Del Campo Romero
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#include <nanowasm/nw.h>
+#include <nw/types.h>
+#include <stddef.h>
+
+int nwp_type_sz(const enum nw_type t, size_t *const out)
+{
+    static const size_t sz[] =
+    {
+        sizeof (long),
+        sizeof (struct nw_ll),
+        sizeof (float),
+        sizeof (double)
+    };
+
+    if (t < 0 || t >= sizeof sz / sizeof *sz)
+        return -1;
+
+    *out = sz[t];
+    return 0;
+}