Fix stack overflow with TTS (readium#482)

Author: Shumovskyi

Package.resolved

@@ -10,10 +10,11 @@ import SQLite
 
 public class LCPSQLiteLicenseRepository: LCPLicenseRepository {
     let licenses = Table("Licenses")
-    let id = Expression<String>("id")
-    let printsLeft = Expression<Int?>("printsLeft")
-    let copiesLeft = Expression<Int?>("copiesLeft")
-    let registered = Expression<Bool>("registered")
+    let id = SQLite.Expression<String>("id")
+    let printsLeft = SQLite.Expression<Int?>("printsLeft")
+    let copiesLeft = SQLite.Expression<Int?>("copiesLeft")
+    let registered = SQLite.Expression<Bool?>("registered")
+
 
     private let db: Connection
 
@@ -98,15 +99,16 @@ public class LCPSQLiteLicenseRepository: LCPLicenseRepository {
         ((try? db.scalar(licenses.filter(id == licenseID).count)) ?? 0) != 0
     }
 
-    private func get(_ column: Expression<Int?>, for licenseId: String) throws -> Int? {
+    private func get(_ column: SQLite.Expression<Int?>, for licenseId: String) throws -> Int? {
         let query = licenses.select(column).filter(id == licenseId)
         for row in try db.prepare(query) {
             return try row.get(column)
         }
         return nil
     }
 
-    private func set(_ column: Expression<Int?>, to value: Int?, for licenseId: String) throws {
+
+    private func set(_ column: SQLite.Expression<Int?>, to value: Int?, for licenseId: String) throws {
         let filterLicense = licenses.filter(id == licenseId)
         try db.run(filterLicense.update(column <- value))
     }

Sources/Adapters/LCPSQLite/SQLiteLCPLicenseRepository.swift

@@ -10,11 +10,11 @@ import ReadiumShared
 import SQLite
 
 public class LCPSQLitePassphraseRepository: LCPPassphraseRepository, Loggable {
-    let transactions = Table("Transactions")
-    let licenseId = Expression<String>("licenseId")
-    let provider = Expression<String>("origin")
-    let userId = Expression<String?>("userId")
-    let passphrase = Expression<String>("passphrase") // hashed.
+    let transactions = SQLite.Table("Transactions")
+    let licenseId = SQLite.Expression<String>("licenseId")
+    let provider = SQLite.Expression<String>("origin")
+    let userId = SQLite.Expression<String?>("userId")
+    let passphrase = SQLite.Expression<String>("passphrase") // hashed
 
     private let db: Connection
 
@@ -66,6 +66,7 @@ public class LCPSQLitePassphraseRepository: LCPPassphraseRepository, Loggable {
         }
     }
 
+
     private func all() -> [String] {
         let query = transactions.select(passphrase)
         do {