Add root directory setting for resolving includes

crates/texlab_protocol/src/options.rs

@@ -68,6 +68,7 @@ pub struct LatexOptions {
     pub forward_search: Option<LatexForwardSearchOptions>,
     pub lint: Option<LatexLintOptions>,
     pub build: Option<LatexBuildOptions>,
+    pub root_directory: Option<PathBuf>,
 }
 
 #[derive(Debug, PartialEq, Eq, Clone, Default, Serialize, Deserialize)]

crates/texlab_syntax/Cargo.toml

@@ -7,6 +7,7 @@ authors = [
 edition = "2018"
 
 [dependencies]
+dunce = "1.0.0"
 itertools = "0.8.2"
 once_cell = "1.3.1"
 path-clean = "0.1.0"

crates/texlab_syntax/src/latex/mod.rs

@@ -159,8 +159,7 @@ impl LatexInclude {
 
         let mut all_targets = Vec::new();
         for relative_path in command.extract_comma_separated_words(description.index) {
-            let mut path = input.uri.to_file_path().ok()?;
-            path.pop();
+            let mut path = input.base_path()?;
             path.push(relative_path.text());
             path = PathBuf::from(path.to_string_lossy().into_owned().replace('\\', "/"));
             path = path.clean();

crates/texlab_syntax/src/lib.rs

@@ -10,15 +10,10 @@ pub use self::latex::*;
 pub use self::lsp_kind::*;
 pub use self::text::*;
 
+use std::path::PathBuf;
 use texlab_distro::{Language, Resolver};
 use texlab_protocol::{Options, Uri};
 
-#[derive(Debug, PartialEq, Eq, Clone)]
-pub enum SyntaxTree {
-    Latex(Box<LatexSyntaxTree>),
-    Bibtex(Box<BibtexSyntaxTree>),
-}
-
 #[derive(Debug, PartialEq, Eq, Clone, Copy)]
 pub struct SyntaxTreeInput<'a> {
     pub options: &'a Options,
@@ -28,6 +23,28 @@ pub struct SyntaxTreeInput<'a> {
     pub language: Language,
 }
 
+impl<'a> SyntaxTreeInput<'a> {
+    pub fn base_path(&self) -> Option<PathBuf> {
+        self.options
+            .latex
+            .as_ref()
+            .and_then(|opts| opts.root_directory.as_ref())
+            .and_then(|path| dunce::canonicalize(path).ok())
+            .or_else(|| {
+                self.uri.to_file_path().ok().map(|mut path| {
+                    path.pop();
+                    path
+                })
+            })
+    }
+}
+
+#[derive(Debug, PartialEq, Eq, Clone)]
+pub enum SyntaxTree {
+    Latex(Box<LatexSyntaxTree>),
+    Bibtex(Box<BibtexSyntaxTree>),
+}
+
 impl SyntaxTree {
     pub fn parse(input: SyntaxTreeInput) -> Self {
         match input.language {