mirror of
https://github.com/denoland/deno.git
synced 2024-12-22 23:34:47 -05:00
316 lines
7.9 KiB
Rust
316 lines
7.9 KiB
Rust
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// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
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use super::analysis;
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use super::text::LineIndex;
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use crate::import_map::ImportMap;
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use crate::media_type::MediaType;
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use deno_core::error::custom_error;
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use deno_core::error::AnyError;
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use deno_core::error::Context;
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use deno_core::ModuleSpecifier;
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use lspower::lsp_types::TextDocumentContentChangeEvent;
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use std::collections::HashMap;
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use std::ops::Range;
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#[derive(Debug, PartialEq, Eq)]
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enum IndexValid {
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All,
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UpTo(u32),
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}
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impl IndexValid {
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fn covers(&self, line: u32) -> bool {
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match *self {
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IndexValid::UpTo(to) => to > line,
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IndexValid::All => true,
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}
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}
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}
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#[derive(Debug, Clone, Default)]
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pub struct DocumentData {
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bytes: Option<Vec<u8>>,
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line_index: Option<LineIndex>,
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dependencies: Option<HashMap<String, analysis::Dependency>>,
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version: Option<i32>,
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}
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impl DocumentData {
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pub fn apply_content_changes(
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&mut self,
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content_changes: Vec<TextDocumentContentChangeEvent>,
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) -> Result<(), AnyError> {
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if self.bytes.is_none() {
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return Ok(());
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}
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let content = &mut String::from_utf8(self.bytes.clone().unwrap())
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.context("unable to parse bytes to string")?;
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let mut line_index = if let Some(line_index) = &self.line_index {
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line_index.clone()
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} else {
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LineIndex::new(&content)
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};
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let mut index_valid = IndexValid::All;
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for change in content_changes {
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if let Some(range) = change.range {
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if !index_valid.covers(range.start.line) {
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line_index = LineIndex::new(&content);
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}
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index_valid = IndexValid::UpTo(range.start.line);
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let range = line_index.get_text_range(range)?;
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content.replace_range(Range::<usize>::from(range), &change.text);
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} else {
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*content = change.text;
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index_valid = IndexValid::UpTo(0);
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}
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}
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self.bytes = Some(content.as_bytes().to_owned());
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self.line_index = if index_valid == IndexValid::All {
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Some(line_index)
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} else {
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Some(LineIndex::new(&content))
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};
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Ok(())
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}
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pub fn content(&self) -> Result<Option<String>, AnyError> {
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if let Some(bytes) = self.bytes.clone() {
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Ok(Some(
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String::from_utf8(bytes).context("cannot decode bytes to string")?,
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))
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} else {
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Ok(None)
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}
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}
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}
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#[derive(Debug, Clone, Default)]
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pub struct DocumentCache {
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docs: HashMap<ModuleSpecifier, DocumentData>,
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}
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impl DocumentCache {
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pub fn analyze_dependencies(
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&mut self,
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specifier: &ModuleSpecifier,
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maybe_import_map: &Option<ImportMap>,
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) -> Result<(), AnyError> {
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if !self.contains(specifier) {
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return Err(custom_error(
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"NotFound",
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format!(
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"The specifier (\"{}\") does not exist in the document cache.",
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specifier
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),
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));
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}
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let doc = self.docs.get_mut(specifier).unwrap();
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if let Some(source) = &doc.content()? {
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if let Some((dependencies, _)) = analysis::analyze_dependencies(
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specifier,
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source,
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&MediaType::from(specifier),
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maybe_import_map,
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) {
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doc.dependencies = Some(dependencies);
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} else {
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doc.dependencies = None;
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}
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} else {
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doc.dependencies = None;
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}
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Ok(())
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}
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pub fn change(
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&mut self,
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specifier: &ModuleSpecifier,
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version: i32,
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content_changes: Vec<TextDocumentContentChangeEvent>,
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) -> Result<(), AnyError> {
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if !self.contains(specifier) {
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return Err(custom_error(
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"NotFound",
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format!(
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"The specifier (\"{}\") does not exist in the document cache.",
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specifier
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),
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));
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}
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let doc = self.docs.get_mut(specifier).unwrap();
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doc.apply_content_changes(content_changes)?;
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doc.version = Some(version);
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Ok(())
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}
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pub fn close(&mut self, specifier: &ModuleSpecifier) {
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if let Some(mut doc) = self.docs.get_mut(specifier) {
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doc.version = None;
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doc.dependencies = None;
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}
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}
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pub fn contains(&self, specifier: &ModuleSpecifier) -> bool {
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self.docs.contains_key(specifier)
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}
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pub fn content(
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&self,
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specifier: &ModuleSpecifier,
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) -> Result<Option<String>, AnyError> {
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if let Some(doc) = self.docs.get(specifier) {
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doc.content()
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} else {
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Ok(None)
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}
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}
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pub fn dependencies(
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&self,
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specifier: &ModuleSpecifier,
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) -> Option<HashMap<String, analysis::Dependency>> {
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let doc = self.docs.get(specifier)?;
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doc.dependencies.clone()
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}
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pub fn len(&self) -> usize {
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self.docs.iter().count()
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}
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pub fn line_index(&self, specifier: &ModuleSpecifier) -> Option<LineIndex> {
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let doc = self.docs.get(specifier)?;
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doc.line_index.clone()
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}
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pub fn open(
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&mut self,
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specifier: ModuleSpecifier,
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version: i32,
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text: String,
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) {
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self.docs.insert(
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specifier,
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DocumentData {
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bytes: Some(text.as_bytes().to_owned()),
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version: Some(version),
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line_index: Some(LineIndex::new(&text)),
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..Default::default()
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},
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);
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}
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pub fn open_specifiers(&self) -> Vec<&ModuleSpecifier> {
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self
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.docs
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.iter()
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.filter_map(|(key, data)| {
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if data.version.is_some() {
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Some(key)
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} else {
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None
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}
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})
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.collect()
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}
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pub fn version(&self, specifier: &ModuleSpecifier) -> Option<i32> {
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self.docs.get(specifier).and_then(|doc| doc.version)
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use lspower::lsp_types;
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#[test]
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fn test_document_cache_contains() {
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let mut document_cache = DocumentCache::default();
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let specifier = ModuleSpecifier::resolve_url("file:///a/b.ts").unwrap();
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let missing_specifier =
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ModuleSpecifier::resolve_url("file:///a/c.ts").unwrap();
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document_cache.open(
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specifier.clone(),
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1,
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"console.log(\"Hello Deno\");\n".to_owned(),
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);
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assert!(document_cache.contains(&specifier));
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assert!(!document_cache.contains(&missing_specifier));
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}
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#[test]
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fn test_document_cache_change() {
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let mut document_cache = DocumentCache::default();
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let specifier = ModuleSpecifier::resolve_url("file:///a/b.ts").unwrap();
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document_cache.open(
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specifier.clone(),
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1,
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"console.log(\"Hello deno\");\n".to_owned(),
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);
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document_cache
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.change(
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&specifier,
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2,
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vec![lsp_types::TextDocumentContentChangeEvent {
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range: Some(lsp_types::Range {
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start: lsp_types::Position {
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line: 0,
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character: 19,
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},
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end: lsp_types::Position {
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line: 0,
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character: 20,
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},
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}),
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range_length: Some(1),
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text: "D".to_string(),
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}],
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)
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.expect("failed to make changes");
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let actual = document_cache
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.content(&specifier)
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.expect("failed to get content");
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assert_eq!(actual, Some("console.log(\"Hello Deno\");\n".to_string()));
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}
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#[test]
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fn test_document_cache_change_utf16() {
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let mut document_cache = DocumentCache::default();
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let specifier = ModuleSpecifier::resolve_url("file:///a/b.ts").unwrap();
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document_cache.open(
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specifier.clone(),
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1,
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"console.log(\"Hello 🦕\");\n".to_owned(),
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);
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document_cache
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.change(
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&specifier,
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2,
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vec![lsp_types::TextDocumentContentChangeEvent {
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range: Some(lsp_types::Range {
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start: lsp_types::Position {
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line: 0,
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character: 19,
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},
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end: lsp_types::Position {
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line: 0,
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character: 21,
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},
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}),
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range_length: Some(2),
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text: "Deno".to_string(),
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}],
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)
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.expect("failed to make changes");
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let actual = document_cache
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.content(&specifier)
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.expect("failed to get content");
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assert_eq!(actual, Some("console.log(\"Hello Deno\");\n".to_string()));
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}
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}
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