Adding Angular and dependent packages for testing

third_party/pkg/angular/lib/core/parser/characters.dart

+library angular.core.parser.characters;
+
+const int $EOF       = 0;
+const int $TAB       = 9;
+const int $LF        = 10;
+const int $VTAB      = 11;
+const int $FF        = 12;
+const int $CR        = 13;
+const int $SPACE     = 32;
+const int $BANG      = 33;
+const int $DQ        = 34;
+const int $$         = 36;
+const int $PERCENT   = 37;
+const int $AMPERSAND = 38;
+const int $SQ        = 39;
+const int $LPAREN    = 40;
+const int $RPAREN    = 41;
+const int $STAR      = 42;
+const int $PLUS      = 43;
+const int $COMMA     = 44;
+const int $MINUS     = 45;
+const int $PERIOD    = 46;
+const int $SLASH     = 47;
+const int $COLON     = 58;
+const int $SEMICOLON = 59;
+const int $LT        = 60;
+const int $EQ        = 61;
+const int $GT        = 62;
+const int $QUESTION  = 63;
+
+const int $0 = 48;
+const int $9 = 57;
+
+const int $A = 65;
+const int $B = 66;
+const int $C = 67;
+const int $D = 68;
+const int $E = 69;
+const int $F = 70;
+const int $G = 71;
+const int $H = 72;
+const int $I = 73;
+const int $J = 74;
+const int $K = 75;
+const int $L = 76;
+const int $M = 77;
+const int $N = 78;
+const int $O = 79;
+const int $P = 80;
+const int $Q = 81;
+const int $R = 82;
+const int $S = 83;
+const int $T = 84;
+const int $U = 85;
+const int $V = 86;
+const int $W = 87;
+const int $X = 88;
+const int $Y = 89;
+const int $Z = 90;
+
+const int $LBRACKET  = 91;
+const int $BACKSLASH = 92;
+const int $RBRACKET  = 93;
+const int $CARET     = 94;
+const int $_         = 95;
+
+const int $a = 97;
+const int $b = 98;
+const int $c = 99;
+const int $d = 100;
+const int $e = 101;
+const int $f = 102;
+const int $g = 103;
+const int $h = 104;
+const int $i = 105;
+const int $j = 106;
+const int $k = 107;
+const int $l = 108;
+const int $m = 109;
+const int $n = 110;
+const int $o = 111;
+const int $p = 112;
+const int $q = 113;
+const int $r = 114;
+const int $s = 115;
+const int $t = 116;
+const int $u = 117;
+const int $v = 118;
+const int $w = 119;
+const int $x = 120;
+const int $y = 121;
+const int $z = 122;
+
+const int $LBRACE = 123;
+const int $BAR    = 124;
+const int $RBRACE = 125;
+const int $TILDE  = 126;
+const int $NBSP   = 160;
+
+bool isWhitespace(int code) {
+  return (code == $SPACE)
+      || (code == $CR)
+      || (code == $LF)
+      || (code == $NBSP)
+      || (code == $TAB)
+      || (code == $VTAB);
+}
+
+bool isIdentifierStart(int code) {
+  return ($a <= code && code <= $z)
+      || ($A <= code && code <= $Z)
+      || (code == $_)
+      || (code == $$);
+}
+
+bool isIdentifierPart(int code) {
+  return ($a <= code && code <= $z)
+      || ($A <= code && code <= $Z)
+      || ($0 <= code && code <= $9)
+      || (code == $_)
+      || (code == $$);
+  }
+
+bool isDigit(int code) {
+  return ($0 <= code && code <= $9);
+}
+
+bool isExponentStart(int code) {
+  return (code == $e || code == $E);
+}
+
+bool isExponentSign(int code) {
+  return (code == $MINUS || code == $PLUS);
+}
+
+int unescape(int code) {
+  Map<int, int> escapes = const {
+      $n: $LF,
+      $f: $FF,
+      $r: $CR,
+      $t: $TAB,
+      $v: $VTAB };
+  int mapped = escapes[code];
+  return (mapped == null) ? code : mapped;
+}