Fix parse error when there are '[' in non-dependency multi-line values

Fixes slint-ui#16

Author: ogoffart

lib.rs

@@ -319,13 +319,8 @@ fn process_toml(cargo_toml: &str, args: &Args) -> Result<String, String> {
  }
  } else if let Some((dep, rest)) = line.split_once("=") {
  let dep = dep.trim().trim_matches('"');
- // Don't call `get_balanced` if we are not in features or a dependency table
- let rest = if current_table == "features" || current_table.ends_with("dependencies") {
- get_balanced(rest, &mut lines)
- .map_err(|e| format!("Parse error while parsing dependency {}: {}", dep, e))?
- } else {
- Cow::from(rest)
- };
+ let rest = get_balanced(rest, &mut lines)
+ .map_err(|e| format!("Parse error while parsing value {}: {}", dep, e))?;
  if current_table == "features" && dep == "default" {
  let defaults = rest
  .trim()
@@ -424,6 +419,7 @@ fn get_balanced<'a>(
  }
  } else {
  match b {
+ b'\\' => last_slash = true,
  b'"' => in_quote = true,
  b'{' | b'[' => level += 1,
  b'}' | b']' if level == 0 => return Err("unbalanced source".into()),
@@ -666,7 +662,7 @@ default = [
 #ffff
 # ff
 "#,
- "Parse error while parsing dependency default",
+ "Parse error while parsing value default",
  );
  }
 
@@ -679,7 +675,7 @@ default = [
 foo = [ x = { ]
 bar = []
 "#,
- "Parse error while parsing dependency foo",
+ "Parse error while parsing value foo",
  );
  }
 
@@ -802,6 +798,14 @@ optional = true
  #[test]
  fn multi_lines() {
  let toml = r#"
+[package.metadata.foo]
+ixyz = [
+ ["array"],
+ [
+ "of",
+ "arrays"
+ ]
+]
 [dev-dependencies]
 ## dep1
 dep1 = {