make SourceSpan optional

Author: alexkazik

Cargo.toml

@@ -17,6 +17,10 @@ thiserror = "1.0.40"
 serde = { version = "1.0.159", features = ["derive"] }
 serde_json = "1.0.95"
 
+[features]
+default = ["source-span"]
+source-span = []
+
 [dev-dependencies]
 indoc = "2.0.1"
 insta = { version = "1.29.0", features = ["json"] }

src/dom/element.rs

@@ -1,4 +1,5 @@
 use super::node::Node;
+#[cfg(feature = "source-span")]
 use super::span::SourceSpan;
 use serde::{Serialize, Serializer};
 use std::collections::{BTreeMap, HashMap};
@@ -45,6 +46,7 @@ pub struct Element {
     #[serde(skip_serializing_if = "Vec::is_empty")]
     pub children: Vec<Node>,
 
+    #[cfg(feature = "source-span")]
     /// Span of the element in the parsed source
     #[serde(skip)]
     pub source_span: SourceSpan,
@@ -59,6 +61,7 @@ impl Default for Element {
             classes: vec![],
             attributes: HashMap::new(),
             children: vec![],
+            #[cfg(feature = "source-span")]
             source_span: SourceSpan::default(),
         }
     }

src/dom/mod.rs

@@ -10,8 +10,10 @@ use crate::grammar::Grammar;
 pub mod element;
 pub mod formatting;
 pub mod node;
+#[cfg(feature = "source-span")]
 pub mod span;
 
+#[cfg(feature = "source-span")]
 use crate::dom::span::SourceSpan;
 use element::{Element, ElementVariant};
 use node::Node;
@@ -232,22 +234,21 @@ impl Dom {
     }
 
     fn build_node_element(pair: Pair<Rule>, dom: &mut Dom) -> Result<Option<Node>> {
-        let source_span = {
-            let pair_span = pair.as_span();
-            let (start_line, start_column) = pair_span.start_pos().line_col();
-            let (end_line, end_column) = pair_span.end_pos().line_col();
-
-            SourceSpan::new(
-                String::from(pair_span.as_str()),
-                start_line,
-                end_line,
-                start_column,
-                end_column,
-            )
-        };
-
         let mut element = Element {
-            source_span,
+            #[cfg(feature = "source-span")]
+            source_span: {
+                let pair_span = pair.as_span();
+                let (start_line, start_column) = pair_span.start_pos().line_col();
+                let (end_line, end_column) = pair_span.end_pos().line_col();
+
+                SourceSpan::new(
+                    String::from(pair_span.as_str()),
+                    start_line,
+                    end_line,
+                    start_column,
+                    end_column,
+                )
+            },
             ..Element::default()
         };
 

src/lib.rs

@@ -106,6 +106,7 @@ pub use crate::dom::Dom;
 pub use crate::dom::DomVariant;
 pub use crate::dom::element::{Element, ElementVariant};
 pub use crate::dom::node::Node;
+#[cfg(feature = "source-span")]
 pub use crate::dom::span::SourceSpan;
 pub use crate::error::Error;
 pub use crate::error::Result;