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Code Issues Packages 1 Wiki Activity

tsc: use serde to (de)serialize CompiledFileMetadata (#5481)

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Co-authored-by: Bert Belder <bertbelder@gmail.com>
This commit is contained in:
Yiyu Lin 2020-05-17 03:47:26 +08:00 committed by GitHub
parent bfd4baf2d3
commit f12dffca9f
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1 changed files with 9 additions and 29 deletions
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38
cli/tsc.rs
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@ -30,6 +30,7 @@ use futures::future::FutureExt;
use log::info;
use regex::Regex;
use serde::Deserialize;
use serde::Serialize;
use serde_json::json;
use serde_json::Value;
use sourcemap::SourceMap;
@ -180,45 +181,24 @@ impl CompilerConfig {
/// Includes source code path and state hash.
/// version_hash is used to validate versions of the file
/// and could be used to remove stale file in cache.
#[derive(Deserialize, Serialize)]
pub struct CompiledFileMetadata {
pub source_path: PathBuf,
pub version_hash: String,
}
static SOURCE_PATH: &str = "source_path";
static VERSION_HASH: &str = "version_hash";
impl CompiledFileMetadata {
pub fn from_json_string(metadata_string: String) -> Option<Self> {
// TODO: use serde for deserialization
let maybe_metadata_json: serde_json::Result<serde_json::Value> =
serde_json::from_str(&metadata_string);
if let Ok(metadata_json) = maybe_metadata_json {
let source_path = metadata_json[SOURCE_PATH].as_str().map(PathBuf::from);
let version_hash = metadata_json[VERSION_HASH].as_str().map(String::from);
if source_path.is_none() || version_hash.is_none() {
return None;
}
return Some(CompiledFileMetadata {
source_path: source_path.unwrap(),
version_hash: version_hash.unwrap(),
});
}
None
pub fn from_json_string(
metadata_string: String,
) -> Result<Self, serde_json::Error> {
serde_json::from_str::<Self>(&metadata_string)
}
pub fn to_json_string(&self) -> Result<String, serde_json::Error> {
let mut value_map = serde_json::map::Map::new();
value_map.insert(SOURCE_PATH.to_owned(), json!(&self.source_path));
value_map.insert(VERSION_HASH.to_string(), json!(&self.version_hash));
serde_json::to_string(&value_map)
serde_json::to_string(self)
}
}
/// Creates the JSON message send to compiler.ts's onmessage.
fn req(
request_type: msg::CompilerRequestType,
@ -522,7 +502,7 @@ impl TsCompiler {
.get_cache_filename_with_extension(url, "meta");
if let Ok(metadata_bytes) = self.disk_cache.get(&cache_key) {
if let Ok(metadata) = std::str::from_utf8(&metadata_bytes) {
if let Some(read_metadata) =
if let Ok(read_metadata) =
CompiledFileMetadata::from_json_string(metadata.to_string())
{
return Some(read_metadata);