First commit

1 files changed, 89 insertions, 0 deletions

diff --git a/src/types.c b/src/types.c
new file mode 100644
index 0000000..88c883e
--- /dev/null
+++ b/src/types.c
@@ -0,0 +1,89 @@
+/*
+ * nanowasm, a tiny WebAssembly/Wasm interpreter
+ * Copyright (C) 2023-2024  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 <nw/leb128.h>
+#include <nw/types.h>
+#include <stdio.h>
+
+int varuint1_read(FILE *const f, varuint1 *const out)
+{
+    unsigned long long value;
+
+    if (leb128_read_unsigned(f, 1, &value))
+        return -1;
+
+    *out = value;
+    return 0;
+}
+
+int varint7_read(FILE *const f, varint7 *const out)
+{
+    long long value;
+
+    if (leb128_read_signed(f, 7, &value))
+        return -1;
+
+    *out = value;
+    return 0;
+}
+
+int varuint7_read(FILE *const f, varuint7 *const out)
+{
+    unsigned long long value;
+
+    if (leb128_read_unsigned(f, 7, &value))
+        return -1;
+
+    *out = value;
+    return 0;
+}
+
+int varuint32_read(FILE *const f, varuint32 *out)
+{
+    unsigned long long value;
+
+    if (leb128_read_unsigned(f, 32, &value))
+        return -1;
+
+    *out = value;
+    return 0;
+}
+
+int varint32_read(FILE *const f, varint32 *const out)
+{
+    long long value;
+
+    if (leb128_read_signed(f, 32, &value))
+        return -1;
+
+    *out = value;
+    return 0;
+}
+
+int varuint64_read(FILE *const f, varuint64 *const out)
+{
+    unsigned long long value;
+
+    if (leb128_read_unsigned(f, 64, &value))
+        return -1;
+
+    *out = value;
+    return 0;
+}
+
+int varint64_read(FILE *const f, varint64 *const out)
+{
+    long long value;
+
+    if (leb128_read_signed(f, 64, &value))
+        return -1;
+
+    *out = value;
+    return 0;
+}