bjoernager/rust
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Reuse memory

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This commit is contained in:
Dániel Buga 2020-10-28 17:04:44 +01:00
parent a21f3a76a9
commit 5248b20d9a
1 changed files with 5 additions and 2 deletions
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7
compiler/rustc_graphviz/src/lib.rs
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@ -653,13 +653,13 @@ where
writeln!(w, r#" edge[{}];"#, content_attrs_str)?; writeln!(w, r#" edge[{}];"#, content_attrs_str)?;
} }
let mut text = Vec::new();
for n in g.nodes().iter() { for n in g.nodes().iter() {
write!(w, " ")?; write!(w, " ")?;
let id = g.node_id(n); let id = g.node_id(n);
let escaped = &g.node_label(n).to_dot_string(); let escaped = &g.node_label(n).to_dot_string();
let mut text = Vec::new();
write!(text, "{}", id.as_slice()).unwrap(); write!(text, "{}", id.as_slice()).unwrap();
if !options.contains(&RenderOption::NoNodeLabels) { if !options.contains(&RenderOption::NoNodeLabels) {
@ -677,6 +677,8 @@ where
writeln!(text, ";").unwrap(); writeln!(text, ";").unwrap();
w.write_all(&text[..])?; w.write_all(&text[..])?;
text.clear();
} }
for e in g.edges().iter() { for e in g.edges().iter() {
@ -687,7 +689,6 @@ where
let source_id = g.node_id(&source); let source_id = g.node_id(&source);
let target_id = g.node_id(&target); let target_id = g.node_id(&target);
let mut text = Vec::new();
write!(text, "{} -> {}", source_id.as_slice(), target_id.as_slice()).unwrap(); write!(text, "{} -> {}", source_id.as_slice(), target_id.as_slice()).unwrap();
if !options.contains(&RenderOption::NoEdgeLabels) { if !options.contains(&RenderOption::NoEdgeLabels) {
@ -701,6 +702,8 @@ where
writeln!(text, ";").unwrap(); writeln!(text, ";").unwrap();
w.write_all(&text[..])?; w.write_all(&text[..])?;
text.clear();
} }
writeln!(w, "}}") writeln!(w, "}}")