serde parse

Author: burrbull

CHANGELOG.md

@@ -7,20 +7,21 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+### Added
+
+- Support of reading SVD from YAML or JSON files instead of XML
+
 ### Changed
 
 - Use `svd-parser` v0.13.1
 - Replace suffix in fields' name before converting to snake case when generating methods #563
+- MIPS API now re-exports `mips_rt::interrupt` when the `rt` feature is enabled
 
 ### Fixed
 
 - Fix ValidateLevel usage in lib.rs
 - Parenthesizing `#offset_calc` to avoid clippy's warning of operator precedence
 
-### Changed
-
-- MIPS API now re-exports `mips_rt::interrupt` when the `rt` feature is enabled
-
 ## [v0.20.0] - 2021-12-07
 
 ### Fixed

Cargo.toml

@@ -45,11 +45,17 @@ quote = "1.0"
 proc-macro2 = "1.0"
 anyhow = "1.0"
 thiserror = "1.0"
+serde_json = "1.0.75"
+serde_yaml = "0.8.23"
 
 [dependencies.svd-parser]
 features = ["derive-from"]
 version = "0.13.1"
 
+[dependencies.svd-rs]
+features = ["serde"]
+version = "0.13.0"
+
 [dependencies.syn]
 version = "1.0"
 features = ["full","extra-traits"]

src/lib.rs

@@ -502,8 +502,8 @@
 use quote::quote;
 use svd_parser::svd;
 
-mod generate;
-mod util;
+pub mod generate;
+pub mod util;
 
 pub use crate::util::{Config, Target};
 
@@ -519,7 +519,8 @@ pub struct DeviceSpecific {
     pub build_rs: String,
 }
 
-use anyhow::Result;
+use anyhow::{Context, Result};
+
 #[derive(Debug, thiserror::Error)]
 pub enum SvdError {
     #[error("Cannot format crate")]
@@ -529,10 +530,10 @@ pub enum SvdError {
 }
 
 /// Generates rust code for the specified svd content.
-pub fn generate(xml: &str, config: &Config) -> Result<Generation> {
+pub fn generate(input: &str, config: &Config) -> Result<Generation> {
     use std::fmt::Write;
 
-    let device = svd_parser::parse(xml)?;
+    let device = load_from(input, config)?;
     let mut device_x = String::new();
     let items =
         generate::device::render(&device, config, &mut device_x).or(Err(SvdError::Render))?;
@@ -562,6 +563,30 @@ pub fn generate(xml: &str, config: &Config) -> Result<Generation> {
     })
 }
 
+/// Load a [Device] from a string slice with given [config](crate::util::Config).
+pub fn load_from(input: &str, config: &crate::util::Config) -> Result<svd::Device> {
+    use self::util::SourceType;
+    use svd_parser::ValidateLevel;
+
+    Ok(match config.source_type {
+        SourceType::Xml => {
+            let mut parser_config = svd_parser::Config::default();
+            parser_config.validate_level = if config.strict {
+                ValidateLevel::Strict
+            } else {
+                ValidateLevel::Weak
+            };
+
+            svd_parser::parse_with_config(input, &parser_config)
+                .with_context(|| "Error parsing SVD XML file".to_string())?
+        }
+        SourceType::Yaml => serde_yaml::from_str(input)
+            .with_context(|| "Error parsing SVD YAML file".to_string())?,
+        SourceType::Json => serde_json::from_str(input)
+            .with_context(|| "Error parsing SVD JSON file".to_string())?,
+    })
+}
+
 /// Assigns a handler to an interrupt
 ///
 /// **NOTE** The `interrupt!` macro on Cortex-M and MSP430 device crates is closer in syntax to the

src/main.rs

@@ -1,11 +1,7 @@
 #![recursion_limit = "128"]
 
 use log::{error, info};
-use std::path::PathBuf;
-use svd_parser::svd;
-
-mod generate;
-mod util;
+use std::path::{Path, PathBuf};
 
 use std::fs::File;
 use std::io::Write;
@@ -14,7 +10,10 @@ use std::process;
 use anyhow::{Context, Result};
 use clap::{App, Arg};
 
-use crate::util::{build_rs, Config, Target};
+use svd2rust::{
+    generate, load_from,
+    util::{build_rs, Config, SourceType, Target},
+};
 
 fn run() -> Result<()> {
     use clap_conf::prelude::*;
@@ -84,6 +83,11 @@ fn run() -> Result<()> {
                     .short("s")
                     .help("Make advanced checks due to parsing SVD"),
             )
+            .arg(
+                Arg::with_name("source_type")
+                    .long("source_type")
+                    .help("Specify file/stream format"),
+            )
             .arg(
                 Arg::with_name("log_level")
                     .long("log")
@@ -101,19 +105,19 @@ fn run() -> Result<()> {
             ))
             .get_matches();
 
-    let xml = &mut String::new();
+    let input = &mut String::new();
     match matches.value_of("input") {
         Some(file) => {
             File::open(file)
                 .context("Cannot open the SVD file")?
-                .read_to_string(xml)
+                .read_to_string(input)
                 .context("Cannot read the SVD file")?;
         }
         None => {
             let stdin = std::io::stdin();
             stdin
                 .lock()
-                .read_to_string(xml)
+                .read_to_string(input)
                 .context("Cannot read from stdin")?;
         }
     }
@@ -146,6 +150,18 @@ fn run() -> Result<()> {
         cfg.bool_flag("ignore_groups", Filter::Arg) || cfg.bool_flag("ignore_groups", Filter::Conf);
     let strict = cfg.bool_flag("strict", Filter::Arg) || cfg.bool_flag("strict", Filter::Conf);
 
+    let mut source_type = cfg
+        .grab()
+        .arg("source_type")
+        .conf("source_type")
+        .done()
+        .and_then(|s| SourceType::from_extension(&s))
+        .unwrap_or_default();
+
+    if let Some(file) = matches.value_of("input") {
+        source_type = SourceType::from_path(Path::new(file))
+    }
+
     let config = Config {
         target,
         nightly,
@@ -155,18 +171,11 @@ fn run() -> Result<()> {
         ignore_groups,
         strict,
         output_dir: path.clone(),
-    };
-
-    let mut parser_config = svd_parser::Config::default();
-    parser_config.validate_level = if strict {
-        svd::ValidateLevel::Strict
-    } else {
-        svd::ValidateLevel::Weak
+        source_type,
     };
 
     info!("Parsing device from SVD file");
-    let device = svd_parser::parse_with_config(xml, &parser_config)
-        .with_context(|| "Error parsing SVD file".to_string())?;
+    let device = load_from(input, &config)?;
 
     let mut device_x = String::new();
     info!("Rendering device");

src/util.rs

@@ -6,7 +6,7 @@ use crate::svd::{
 use inflections::Inflect;
 use proc_macro2::{Ident, Literal, Span, TokenStream};
 use quote::{quote, ToTokens};
-use std::path::PathBuf;
+use std::path::{Path, PathBuf};
 
 use anyhow::{anyhow, bail, Context, Result};
 
@@ -26,6 +26,7 @@ pub struct Config {
     pub ignore_groups: bool,
     pub strict: bool,
     pub output_dir: PathBuf,
+    pub source_type: SourceType,
 }
 
 impl Default for Config {
@@ -39,6 +40,7 @@ impl Default for Config {
             ignore_groups: false,
             strict: false,
             output_dir: PathBuf::from("."),
+            source_type: SourceType::default(),
         }
     }
 }
@@ -75,6 +77,37 @@ impl Default for Target {
     }
 }
 
+#[derive(Clone, Copy, PartialEq, Debug)]
+pub enum SourceType {
+    Xml,
+    Yaml,
+    Json,
+}
+
+impl Default for SourceType {
+    fn default() -> Self {
+        Self::Xml
+    }
+}
+
+impl SourceType {
+    /// Make a new [`Source`] from a given extension.
+    pub fn from_extension(s: &str) -> Option<Self> {
+        match s {
+            "yml" | "yaml" => Some(Self::Yaml),
+            "json" => Some(Self::Json),
+            "svd" | "xml" => Some(Self::Xml),
+            _ => None,
+        }
+    }
+    pub fn from_path(path: &Path) -> Self {
+        path.extension()
+            .and_then(|e| e.to_str())
+            .and_then(Self::from_extension)
+            .unwrap_or_default()
+    }
+}
+
 pub trait ToSanitizedPascalCase {
     fn to_sanitized_pascal_case(&self) -> Cow<str>;
 }