wit refactoring

crates/wit-generator/src/instructions_generator.rs

@@ -0,0 +1,52 @@
+/*
+ * Copyright 2020 Fluence Labs Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+mod fn_instructions;
+mod foreign_mod_instructions;
+mod record_instructions;
+mod utils;
+
+use fluence_sdk_wit::FCEAst;
+
+use wasmer_wit::types::InterfaceType as IType;
+use wasmer_wit::ast::Interfaces;
+use wasmer_wit::interpreter::Instruction;
+
+pub trait WITGenerator {
+    fn generate_wit<'a>(&'a self, interfaces: &mut Interfaces<'a>);
+}
+
+trait FnInstructionGenerator {
+    fn generate_instructions_for_input_type(&self, arg_id: u32) -> Vec<Instruction>;
+
+    fn generate_instructions_for_output_type(&self) -> Vec<Instruction>;
+}
+
+trait ForeignModInstructionGenerator {
+    fn generate_instructions_for_input_type(&self, arg_id: u32) -> Vec<Instruction>;
+
+    fn generate_instructions_for_output_type(&self) -> Vec<Instruction>;
+}
+
+impl WITGenerator for FCEAst {
+    fn generate_wit<'a>(&'a self, interfaces: &mut Interfaces<'a>) {
+        match self {
+            FCEAst::Function(func) => func.generate_wit(interfaces),
+            FCEAst::ExternMod(extern_mod) => extern_mod.generate_wit(interfaces),
+            FCEAst::Record(record) => record.generate_wit(interfaces),
+        }
+    }
+}