Start refactoring.

derive/src/codegen.rs

@@ -1,4 +1,4 @@
-use crate::model::{ExtDefinition, ExternalFunc};
+use crate::parser::{ExtDefinition, ExternalFunc};
 use proc_macro2::{Ident, Literal, Span, TokenStream};
 use quote::{quote, quote_spanned, ToTokens};
 

derive/src/lib.rs

@@ -3,7 +3,6 @@
 extern crate proc_macro;
 
 mod codegen;
-mod model;
 mod parser;
 
 use proc_macro::TokenStream;

derive/src/model.rs

@@ -1,38 +0,0 @@
-pub enum ValueType {
-    I32,
-    I64,
-    F32,
-    F64,
-}
-
-pub struct Signature {
-    pub params: Vec<ValueType>,
-    pub return_ty: Option<ValueType>,
-}
-
-#[derive(Clone)]
-pub struct Param {
-    /// A generated identifier used for temporary variables.
-    pub ident: syn::Ident,
-}
-
-pub struct ExternalFunc {
-    /// Assigned index of this function.
-    pub index: u32,
-    pub name: String,
-    // TODO: Rename args to params
-    pub args: Vec<Param>,
-    pub return_ty: Option<proc_macro2::Span>,
-}
-
-/// The core structure that contains the list of all functions
-/// and the data required for implementing a trait.
-pub struct ExtDefinition {
-    /// List of all external functions.
-    pub funcs: Vec<ExternalFunc>,
-    /// The generics required to implement a trait for this type.
-    pub generics: syn::Generics,
-    /// The type declaration to implement to implement a trait, most typically
-    /// represented by a structure.
-    pub ty: Box<syn::Type>,
-}

derive/src/parser.rs

@@ -1,7 +1,46 @@
-use crate::model::{self, ExtDefinition, ExternalFunc, Param};
 use syn::spanned::Spanned;
 use syn::{FnArg, Ident, ImplItem, ImplItemMethod, ItemImpl, ReturnType};
 
+pub enum ValueType {
+    I32,
+    I64,
+    F32,
+    F64,
+}
+
+pub struct Signature {
+    pub params: Vec<ValueType>,
+    pub return_ty: Option<ValueType>,
+}
+
+#[derive(Clone)]
+pub struct Param {
+    /// A generated identifier used to name temporary variables
+    /// used for storing this parameter in generated code.
+    pub ident: syn::Ident,
+}
+
+pub struct ExternalFunc {
+    /// Assigned index of this function.
+    pub index: u32,
+    pub name: String,
+    // TODO: Rename args to params
+    pub args: Vec<Param>,
+    pub return_ty: Option<proc_macro2::Span>,
+}
+
+/// The core structure that contains the list of all functions
+/// and the data required for implementing a trait.
+pub struct ExtDefinition {
+    /// List of all external functions.
+    pub funcs: Vec<ExternalFunc>,
+    /// The generics required to implement a trait for this type.
+    pub generics: syn::Generics,
+    /// The type declaration to implement to implement a trait, most typically
+    /// represented by a structure.
+    pub ty: Box<syn::Type>,
+}
+
 /// Parse an incoming stream of tokens into externalities definition.
 pub fn parse(input: proc_macro2::TokenStream) -> Result<ExtDefinition, ()> {
     let item_impl = syn::parse2::<syn::ItemImpl>(input).map_err(|_| ())?;