Rename actionString to commandString

Source/SwiftLintCore/Models/Command.swift

@@ -82,11 +82,11 @@ public struct Command: Equatable {
 
     /// Creates a command based on the specified parameters.
     ///
-    /// - parameter actionString: The string in the command's definition describing its action.
-    /// - parameter line:         The line in the source file where this command is defined.
-    /// - parameter range:        The range of the command in the line (0-based).
-    public init(actionString: String, line: Int, range: Range<Int>) {
-        let scanner = Scanner(string: actionString)
+    /// - parameter commandString: The whole command string as found in the code.
+    /// - parameter line:          The line in the source file where this command is defined.
+    /// - parameter range:         The range of the command in the line (0-based).
+    public init(commandString: String, line: Int, range: Range<Int>) {
+        let scanner = Scanner(string: commandString)
         _ = scanner.scanString("swiftlint:")
         // (enable|disable)(:previous|:this|:next)
         guard let actionAndModifierString = scanner.scanUpToString(" ") else {

Source/SwiftLintCore/Visitors/CommandVisitor.swift

@@ -32,7 +32,7 @@ final class CommandVisitor: SyntaxVisitor {
                     break
                 }
                 let command = Command(
-                    actionString: String(comment[lower...]),
+                    commandString: String(comment[lower...]),
                     line: location.line,
                     range: character..<(character + piece.sourceLength.utf8Length - offset)
                 )

Tests/FrameworkTests/CommandTests.swift

@@ -10,7 +10,7 @@ private extension Command {
         let nsString = string.bridge()
         guard nsString.length > 7 else { return nil }
         let subString = nsString.substring(with: NSRange(location: 3, length: nsString.length - 4))
-        self.init(actionString: subString, line: 1, range: 4..<nsString.length)
+        self.init(commandString: subString, line: 1, range: 4..<nsString.length)
     }
 }