Initial project import

tools/v/vlib/wasm/functions.v

@@ -0,0 +1,53 @@
+// Copyright (c) 2023 l-m.dev. All rights reserved.
+// Use of this source code is governed by an MIT license
+// that can be found in the LICENSE file.
+module wasm
+
+struct ImportCallPatch {
+	mod  string
+	name string
+mut:
+	pos int
+}
+
+struct FunctionCallPatch {
+	name string
+mut:
+	pos int
+}
+
+type CallPatch = FunctionCallPatch | ImportCallPatch
+
+struct FunctionGlobalPatch {
+	idx GlobalIndex
+mut:
+	pos int
+}
+
+type FunctionPatch = CallPatch | FunctionGlobalPatch
+
+struct FunctionLocal {
+	typ  ValType
+	name ?string
+}
+
+pub struct Function {
+	tidx int
+	idx  int
+mut:
+	patches []FunctionPatch // sorted
+	label   int
+	export  bool
+	mod     &Module = unsafe { nil }
+	code    []u8
+	locals  []FunctionLocal
+pub:
+	name string
+pub mut:
+	export_name ?string
+}
+
+// export_name sets the export name of the function to `name`
+pub fn (mut func Function) export_name(name string) {
+	func.export_name = name
+}