Split error code to ease future improvements

pkg/analyzer/lib/src/error/codes.dart

Index: pkg/analyzer/lib/src/error/codes.dart
diff --git a/pkg/analyzer/lib/src/error/codes.dart b/pkg/analyzer/lib/src/error/codes.dart
index df5e5eeb84e2bb3759548f36402c1836ad2c171f..48df41b741e95b3072131ecdaf979932f813baa8 100644
--- a/pkg/analyzer/lib/src/error/codes.dart
+++ b/pkg/analyzer/lib/src/error/codes.dart
@@ -980,10 +980,30 @@ class CompileTimeErrorCode extends ErrorCode {
   static const CompileTimeErrorCode EXTRA_POSITIONAL_ARGUMENTS =
       const CompileTimeErrorCode(
           'EXTRA_POSITIONAL_ARGUMENTS',
-          "{0} positional arguments expected, but {1} found.",
+          "Too many positional arguments: {0} expected, but {1} found.",
           "Try removing the extra arguments.");
 
   /**
+   * 12.14.2 Binding Actuals to Formals: It is a static warning if <i>m &lt;
+   * h</i> or if <i>m &gt; n</i>.
+   *
+   * 16.12.2 Const: It is a compile-time error if evaluation of a constant
+   * object results in an uncaught exception being thrown.
+   *
+   * Parameters:
+   * 0: the maximum number of positional arguments
+   * 1: the actual number of positional arguments given
+   *
+   * See [NOT_ENOUGH_REQUIRED_ARGUMENTS].
+   */
+  static const CompileTimeErrorCode EXTRA_POSITIONAL_ARGUMENTS_COULD_BE_NAMED =
+      const CompileTimeErrorCode(
+          'EXTRA_POSITIONAL_ARGUMENTS_COULD_BE_NAMED',
+          "Too many positional arguments: {0} expected, but {1} found.",
+          "Try removing the extra positional arguments, "
+          "or specifying the name for named arguments.");
+
+  /**
    * 7.6.1 Generative Constructors: Let <i>k</i> be a generative constructor. It
    * is a compile time error if more than one initializer corresponding to a
    * given instance variable appears in <i>k</i>'s list.
@@ -3507,10 +3527,27 @@ class StaticWarningCode extends ErrorCode {
   static const StaticWarningCode EXTRA_POSITIONAL_ARGUMENTS =
       const StaticWarningCode(
           'EXTRA_POSITIONAL_ARGUMENTS',
-          "{0} positional arguments expected, but {1} found.",
+          "Too many positional arguments: {0} expected, but {1} found.",
           "Try removing the extra positional arguments.");
 
   /**
+   * 12.14.2 Binding Actuals to Formals: It is a static warning if <i>m &lt;
+   * h</i> or if <i>m &gt; n</i>.
+   *
+   * Parameters:
+   * 0: the maximum number of positional arguments
+   * 1: the actual number of positional arguments given
+   *
+   * See [NOT_ENOUGH_REQUIRED_ARGUMENTS].
+   */
+  static const StaticWarningCode EXTRA_POSITIONAL_ARGUMENTS_COULD_BE_NAMED =
+      const StaticWarningCode(
+          'EXTRA_POSITIONAL_ARGUMENTS_COULD_BE_NAMED',
+          "Too many positional arguments: {0} expected, but {1} found.",
+          "Try removing the extra positional arguments, "
+          "or specifying the name for named arguments.");
+
+  /**
    * 5. Variables: It is a static warning if a final instance variable that has
    * been initialized at its point of declaration is also initialized in a
    * constructor.