src/backplane.rs

@@ -34,7 +34,7 @@ impl Backplane {
         &mut self.cards
     }
 
-    pub fn add_card(&mut self, type_name: &str, config: Mapping) -> anyhow::Result<usize> {
+    pub fn add_card(&mut self, type_name: &str, config: &Mapping) -> anyhow::Result<usize> {
         if self.cards.len() >= 255 {
             return Err(CardAddError::BackplaneFull.into());
         }

src/card.rs

@@ -5,7 +5,7 @@ use std::fmt::{Debug, Display};
 
 pub struct Type {
     pub name: &'static str,
-    new: fn(data: Mapping) -> anyhow::Result<Box<dyn Card>>,
+    new: fn(data: &Mapping) -> anyhow::Result<Box<dyn Card>>,
 }
 
 impl Type {
@@ -16,7 +16,7 @@ impl Type {
         }
     }
 
-    pub fn new_card(&self, data: Mapping) -> anyhow::Result<Box<dyn Card>> {
+    pub fn new_card(&self, data: &Mapping) -> anyhow::Result<Box<dyn Card>> {
         (self.new)(data)
     }
 }
@@ -24,10 +24,10 @@ impl Type {
 inventory::collect!(Type);
 
 pub trait Card: Debug + Display {
-    fn new(data: Mapping) -> anyhow::Result<Self>
+    fn new(data: &Mapping) -> anyhow::Result<Self>
     where
         Self: Sized;
-    fn new_dyn(data: Mapping) -> anyhow::Result<Box<dyn Card>>
+    fn new_dyn(data: &Mapping) -> anyhow::Result<Box<dyn Card>>
     where
         Self: Sized + 'static,
     {

src/main.rs

@@ -63,7 +63,7 @@ fn main() -> Result<(), anyhow::Error> {
         .map_err(|e| anyhow!("Could not parse config file ({})", e))?;
     let mut backplane = Backplane::new();
     for card in config.cards {
-        backplane.add_card(card.typ, card.config)?;
+        backplane.add_card(card.typ, &card.config)?;
     }
     let mut symbol_tables = SymbolTables::new();
     if let Some(initial_tables) = config.symbol_tables {

src/ram.rs

@@ -1,8 +1,8 @@
 use std::fmt::Display;
 
+use anyhow::anyhow;
 use human_repr::HumanCount;
 use nullable_result::NullableResult;
-use serde::Deserialize;
 use serde_yaml::Mapping;
 
 use crate::{
@@ -11,11 +11,6 @@ use crate::{
     register,
 };
 
-#[derive(Deserialize)]
-struct Config {
-    size: u32,
-}
-
 #[derive(Debug)]
 pub struct Ram {
     data: Vec<u8>,
@@ -26,8 +21,12 @@ pub struct Ram {
 impl Ram {}
 
 impl Card for Ram {
-    fn new(data: Mapping) -> anyhow::Result<Self> {
-        let size = serde_yaml::from_value::<Config>(data.into())?.size;
+    fn new(data: &Mapping) -> anyhow::Result<Self> {
+        let size = data
+            .get("size")
+            .ok_or_else(|| anyhow!("No size value for RAM"))?
+            .as_u64()
+            .ok_or_else(|| anyhow!("Size value not a positive integer"))?;
         Ok(Self {
             data: vec![0; size as usize],
             start: 0,

src/rom.rs

@@ -3,7 +3,6 @@ use std::{fmt::Display, fs::File, io::Read};
 use anyhow::anyhow;
 use human_repr::HumanCount;
 use nullable_result::NullableResult;
-use serde::Deserialize;
 use serde_yaml::Mapping;
 
 use crate::{
@@ -12,11 +11,6 @@ use crate::{
     register,
 };
 
-#[derive(Deserialize)]
-struct Config {
-    file_name: Option<String>,
-}
-
 #[derive(Debug)]
 pub struct Rom {
     data: Vec<u8>,
@@ -29,8 +23,12 @@ pub struct Rom {
 impl Rom {}
 
 impl Card for Rom {
-    fn new(data: Mapping) -> anyhow::Result<Self> {
-        let file_name = serde_yaml::from_value::<Config>(data.into())?.file_name;
+    fn new(data: &Mapping) -> anyhow::Result<Self> {
+        let file_name = data
+            .get("image")
+            .map(|name| name.as_str().ok_or_else(|| anyhow!("File name not string")))
+            .transpose()?
+            .map(ToString::to_string);
         let mut data = Vec::new();
         if let Some(file_name) = file_name.as_ref() {
             File::open(file_name)

src/storage.rs

@@ -3,7 +3,6 @@ use std::{fmt::Display, fs::File, io::Read};
 use anyhow::anyhow;
 use human_repr::HumanCount;
 use nullable_result::NullableResult;
-use serde::Deserialize;
 use serde_yaml::Mapping;
 
 use crate::{
@@ -14,11 +13,6 @@ use crate::{
 
 const SECTOR_SIZE: usize = 256;
 
-#[derive(Deserialize)]
-struct Config {
-    file_name: Option<String>,
-}
-
 #[derive(Debug)]
 pub struct Storage {
     data: Vec<u8>,
@@ -28,9 +22,12 @@ pub struct Storage {
 }
 
 impl Card for Storage {
-    fn new(data: Mapping) -> anyhow::Result<Self> {
-        let file_name = serde_yaml::from_value::<Config>(data.into())?.file_name;
-
+    fn new(data: &Mapping) -> anyhow::Result<Self> {
+        let file_name = data
+            .get("image")
+            .map(|name| name.as_str().ok_or_else(|| anyhow!("File name not string")))
+            .transpose()?
+            .map(ToString::to_string);
         let mut data = Vec::new();
         if let Some(file_name) = file_name.as_ref() {
             File::open(file_name)

src/term.rs

@@ -15,7 +15,7 @@ impl Display for Term {
 }
 
 impl Card for Term {
-    fn new(_data: Mapping) -> anyhow::Result<Self>
+    fn new(_data: &Mapping) -> anyhow::Result<Self>
     where
         Self: Sized,
     {