chore(formatter): trim spaces after opening brace (noir-lang#3005)

tooling/nargo_fmt/src/visitor/expr.rs

@@ -1,4 +1,6 @@
-use noirc_frontend::{hir::resolution::errors::Span, BlockExpression, Expression, ExpressionKind};
+use noirc_frontend::{
+    hir::resolution::errors::Span, BlockExpression, Expression, ExpressionKind, Statement,
+};
 
 use super::FmtVisitor;
 
@@ -52,6 +54,8 @@ impl FmtVisitor<'_> {
         self.last_position = block_span.start() + 1; // `{`
         self.push_str("{");
 
+        self.trim_spaces_after_opening_brace(&block.0);
+
         self.with_indent(|this| {
             this.visit_stmts(block.0);
         });
@@ -68,6 +72,15 @@ impl FmtVisitor<'_> {
         self.push_str("}");
     }
 
+    fn trim_spaces_after_opening_brace(&mut self, block: &[Statement]) {
+        if let Some(first_stmt) = block.first() {
+            let slice = slice!(self, self.last_position, first_stmt.span.start());
+            let len =
+                slice.chars().take_while(|ch| ch.is_whitespace()).collect::<String>().rfind('\n');
+            self.last_position += len.unwrap_or(0) as u32;
+        }
+    }
+
     fn visit_empty_block(&mut self, block_span: Span, should_indent: bool) {
         let slice = slice!(self, block_span.start(), block_span.end());
         let comment_str = slice[1..slice.len() - 1].trim();

tooling/nargo_fmt/tests/expected/expr.nr

@@ -62,3 +62,12 @@ fn commnet() {
     1
     //
 }
+
+fn test() {
+    34
+}
+
+fn test() {
+    // 324
+    34
+}

tooling/nargo_fmt/tests/input/expr.nr

@@ -61,4 +61,22 @@ fn only_comments() {
 fn commnet() {
     1
     //
-}
+}
+
+fn test() {
+
+
+
+
+
+    34
+}
+
+fn test() {
+
+
+
+
+    // 324
+    34
+}