code_block [nfc]: Make CodeBlockTextStyles.lerp static

Discussion:
  #746 (comment)

Author: chrisbobbe

lib/widgets/code_block.dart

@@ -477,73 +477,73 @@ class CodeBlockTextStyles {
     };
   }
 
-  CodeBlockTextStyles lerp(CodeBlockTextStyles other, double t) {
-    if (identical(this, other)) return this;
+  static CodeBlockTextStyles lerp(CodeBlockTextStyles a, CodeBlockTextStyles b, double t) {
+    if (identical(a, b)) return a;
 
     return CodeBlockTextStyles._(
-      plain: TextStyle.lerp(plain, other.plain, t)!,
-      hll: TextStyle.lerp(_hll, other._hll, t)!,
-      c: TextStyle.lerp(_c, other._c, t)!,
-      err: TextStyle.lerp(_err, other._err, t)!,
-      k: TextStyle.lerp(_k, other._k, t)!,
-      o: TextStyle.lerp(_o, other._o, t)!,
-      cm: TextStyle.lerp(_cm, other._cm, t)!,
-      cp: TextStyle.lerp(_cp, other._cp, t)!,
-      c1: TextStyle.lerp(_c1, other._c1, t)!,
-      cs: TextStyle.lerp(_cs, other._cs, t)!,
-      gd: TextStyle.lerp(_gd, other._gd, t)!,
-      ge: TextStyle.lerp(_ge, other._ge, t)!,
-      gr: TextStyle.lerp(_gr, other._gr, t)!,
-      gh: TextStyle.lerp(_gh, other._gh, t)!,
-      gi: TextStyle.lerp(_gi, other._gi, t)!,
-      go: TextStyle.lerp(_go, other._go, t)!,
-      gp: TextStyle.lerp(_gp, other._gp, t)!,
-      gs: TextStyle.lerp(_gs, other._gs, t)!,
-      gu: TextStyle.lerp(_gu, other._gu, t)!,
-      gt: TextStyle.lerp(_gt, other._gt, t)!,
-      kc: TextStyle.lerp(_kc, other._kc, t)!,
-      kd: TextStyle.lerp(_kd, other._kd, t)!,
-      kn: TextStyle.lerp(_kn, other._kn, t)!,
-      kp: TextStyle.lerp(_kp, other._kp, t)!,
-      kr: TextStyle.lerp(_kr, other._kr, t)!,
-      kt: TextStyle.lerp(_kt, other._kt, t)!,
-      m: TextStyle.lerp(_m, other._m, t)!,
-      s: TextStyle.lerp(_s, other._s, t)!,
-      na: TextStyle.lerp(_na, other._na, t)!,
-      nb: TextStyle.lerp(_nb, other._nb, t)!,
-      nc: TextStyle.lerp(_nc, other._nc, t)!,
-      no: TextStyle.lerp(_no, other._no, t)!,
-      nd: TextStyle.lerp(_nd, other._nd, t)!,
-      ni: TextStyle.lerp(_ni, other._ni, t)!,
-      ne: TextStyle.lerp(_ne, other._ne, t)!,
-      nf: TextStyle.lerp(_nf, other._nf, t)!,
-      nl: TextStyle.lerp(_nl, other._nl, t)!,
-      nn: TextStyle.lerp(_nn, other._nn, t)!,
-      nt: TextStyle.lerp(_nt, other._nt, t)!,
-      nv: TextStyle.lerp(_nv, other._nv, t)!,
-      nx: TextStyle.lerp(_nx, other._nx, t)!,
-      ow: TextStyle.lerp(_ow, other._ow, t)!,
-      w: TextStyle.lerp(_w, other._w, t)!,
-      mf: TextStyle.lerp(_mf, other._mf, t)!,
-      mh: TextStyle.lerp(_mh, other._mh, t)!,
-      mi: TextStyle.lerp(_mi, other._mi, t)!,
-      mo: TextStyle.lerp(_mo, other._mo, t)!,
-      sb: TextStyle.lerp(_sb, other._sb, t)!,
-      sc: TextStyle.lerp(_sc, other._sc, t)!,
-      sd: TextStyle.lerp(_sd, other._sd, t)!,
-      s2: TextStyle.lerp(_s2, other._s2, t)!,
-      se: TextStyle.lerp(_se, other._se, t)!,
-      sh: TextStyle.lerp(_sh, other._sh, t)!,
-      si: TextStyle.lerp(_si, other._si, t)!,
-      sx: TextStyle.lerp(_sx, other._sx, t)!,
-      sr: TextStyle.lerp(_sr, other._sr, t)!,
-      s1: TextStyle.lerp(_s1, other._s1, t)!,
-      ss: TextStyle.lerp(_ss, other._ss, t)!,
-      bp: TextStyle.lerp(_bp, other._bp, t)!,
-      vc: TextStyle.lerp(_vc, other._vc, t)!,
-      vg: TextStyle.lerp(_vg, other._vg, t)!,
-      vi: TextStyle.lerp(_vi, other._vi, t)!,
-      il: TextStyle.lerp(_il, other._il, t)!,
+      plain: TextStyle.lerp(a.plain, b.plain, t)!,
+      hll: TextStyle.lerp(a._hll, b._hll, t)!,
+      c: TextStyle.lerp(a._c, b._c, t)!,
+      err: TextStyle.lerp(a._err, b._err, t)!,
+      k: TextStyle.lerp(a._k, b._k, t)!,
+      o: TextStyle.lerp(a._o, b._o, t)!,
+      cm: TextStyle.lerp(a._cm, b._cm, t)!,
+      cp: TextStyle.lerp(a._cp, b._cp, t)!,
+      c1: TextStyle.lerp(a._c1, b._c1, t)!,
+      cs: TextStyle.lerp(a._cs, b._cs, t)!,
+      gd: TextStyle.lerp(a._gd, b._gd, t)!,
+      ge: TextStyle.lerp(a._ge, b._ge, t)!,
+      gr: TextStyle.lerp(a._gr, b._gr, t)!,
+      gh: TextStyle.lerp(a._gh, b._gh, t)!,
+      gi: TextStyle.lerp(a._gi, b._gi, t)!,
+      go: TextStyle.lerp(a._go, b._go, t)!,
+      gp: TextStyle.lerp(a._gp, b._gp, t)!,
+      gs: TextStyle.lerp(a._gs, b._gs, t)!,
+      gu: TextStyle.lerp(a._gu, b._gu, t)!,
+      gt: TextStyle.lerp(a._gt, b._gt, t)!,
+      kc: TextStyle.lerp(a._kc, b._kc, t)!,
+      kd: TextStyle.lerp(a._kd, b._kd, t)!,
+      kn: TextStyle.lerp(a._kn, b._kn, t)!,
+      kp: TextStyle.lerp(a._kp, b._kp, t)!,
+      kr: TextStyle.lerp(a._kr, b._kr, t)!,
+      kt: TextStyle.lerp(a._kt, b._kt, t)!,
+      m: TextStyle.lerp(a._m, b._m, t)!,
+      s: TextStyle.lerp(a._s, b._s, t)!,
+      na: TextStyle.lerp(a._na, b._na, t)!,
+      nb: TextStyle.lerp(a._nb, b._nb, t)!,
+      nc: TextStyle.lerp(a._nc, b._nc, t)!,
+      no: TextStyle.lerp(a._no, b._no, t)!,
+      nd: TextStyle.lerp(a._nd, b._nd, t)!,
+      ni: TextStyle.lerp(a._ni, b._ni, t)!,
+      ne: TextStyle.lerp(a._ne, b._ne, t)!,
+      nf: TextStyle.lerp(a._nf, b._nf, t)!,
+      nl: TextStyle.lerp(a._nl, b._nl, t)!,
+      nn: TextStyle.lerp(a._nn, b._nn, t)!,
+      nt: TextStyle.lerp(a._nt, b._nt, t)!,
+      nv: TextStyle.lerp(a._nv, b._nv, t)!,
+      nx: TextStyle.lerp(a._nx, b._nx, t)!,
+      ow: TextStyle.lerp(a._ow, b._ow, t)!,
+      w: TextStyle.lerp(a._w, b._w, t)!,
+      mf: TextStyle.lerp(a._mf, b._mf, t)!,
+      mh: TextStyle.lerp(a._mh, b._mh, t)!,
+      mi: TextStyle.lerp(a._mi, b._mi, t)!,
+      mo: TextStyle.lerp(a._mo, b._mo, t)!,
+      sb: TextStyle.lerp(a._sb, b._sb, t)!,
+      sc: TextStyle.lerp(a._sc, b._sc, t)!,
+      sd: TextStyle.lerp(a._sd, b._sd, t)!,
+      s2: TextStyle.lerp(a._s2, b._s2, t)!,
+      se: TextStyle.lerp(a._se, b._se, t)!,
+      sh: TextStyle.lerp(a._sh, b._sh, t)!,
+      si: TextStyle.lerp(a._si, b._si, t)!,
+      sx: TextStyle.lerp(a._sx, b._sx, t)!,
+      sr: TextStyle.lerp(a._sr, b._sr, t)!,
+      s1: TextStyle.lerp(a._s1, b._s1, t)!,
+      ss: TextStyle.lerp(a._ss, b._ss, t)!,
+      bp: TextStyle.lerp(a._bp, b._bp, t)!,
+      vc: TextStyle.lerp(a._vc, b._vc, t)!,
+      vg: TextStyle.lerp(a._vg, b._vg, t)!,
+      vi: TextStyle.lerp(a._vi, b._vi, t)!,
+      il: TextStyle.lerp(a._il, b._il, t)!,
     );
   }
 }

lib/widgets/content.dart

@@ -105,7 +105,7 @@ class ContentTheme extends ThemeExtension<ContentTheme> {
     }
     return ContentTheme._(
       textStylePlainParagraph: TextStyle.lerp(textStylePlainParagraph, other.textStylePlainParagraph, t)!,
-      codeBlockTextStyles: codeBlockTextStyles.lerp(other.codeBlockTextStyles, t),
+      codeBlockTextStyles: CodeBlockTextStyles.lerp(codeBlockTextStyles, other.codeBlockTextStyles, t),
       textStyleError: TextStyle.lerp(textStyleError, other.textStyleError, t)!,
       textStyleErrorCode: TextStyle.lerp(textStyleErrorCode, other.textStyleErrorCode, t)!,
     );