Let recovery respect to allowAtStartOfLine

Author: StevenWong12

Sources/SwiftParser/Declarations.swift

@@ -1376,7 +1376,7 @@ extension Parser {
 
     let output: RawReturnClauseSyntax?
 
-    if self.at(.arrow) || self.canRecoverTo(TokenSpec(.arrow, recoveryPrecedence: .weakPunctuator, allowAtStartOfLine: false)) != nil {
+    if self.at(.arrow) || self.canRecoverTo(TokenSpec(.arrow, allowAtStartOfLine: false)) != nil {
       output = self.parseFunctionReturnClause(effectSpecifiers: &effectSpecifiers, allowNamedOpaqueResultType: true)
     } else {
       output = nil

Sources/SwiftParser/Recovery.swift

@@ -70,9 +70,10 @@ extension Parser.Lookahead {
     let initialTokensConsumed = self.tokensConsumed
 
     let recoveryPrecedence = min(spec1.recoveryPrecedence, spec2.recoveryPrecedence, spec3.recoveryPrecedence)
+    let shouldSkipOverNewlines = recoveryPrecedence.shouldSkipOverNewlines && spec1.allowAtStartOfLine && spec2.allowAtStartOfLine && spec3.allowAtStartOfLine
 
     while !self.at(.eof) {
-      if !recoveryPrecedence.shouldSkipOverNewlines, self.currentToken.isAtStartOfLine {
+      if !shouldSkipOverNewlines, self.currentToken.isAtStartOfLine {
         break
       }
       let matchedSpec: TokenSpec?