Improve wrapping during formatting.

pkg/analyzer/test/services/data/wrap_tests.data

Index: pkg/analyzer/test/services/data/wrap_tests.data
diff --git a/pkg/analyzer/test/services/data/wrap_tests.data b/pkg/analyzer/test/services/data/wrap_tests.data
new file mode 100644
index 0000000000000000000000000000000000000000..ee5c6fd22809ff69b961b3468b3f8f2c89553f38
--- /dev/null
+++ b/pkg/analyzer/test/services/data/wrap_tests.data
@@ -0,0 +1,94 @@
+>>> list literal
+main() {
+  List<String> values = <String>[a0123456789012345, b0123456789012345, c0123456789012345, d0123456789012345];
+}
+<<<
+main() {
+  List<String> values = <String>[
+      a0123456789012345,
+      b0123456789012345,
+      c0123456789012345,
+      d0123456789012345];
+}
+>>> operators
+main() {
+  int result = a0123456789012345 * b0123456789012345 + c0123456789012345 * d0123456789012345;
+}
+<<<
+main() {
+  int result = a0123456789012345 * b0123456789012345 +
+      c0123456789012345 * d0123456789012345;
+}
+>>> arguments
+main() {
+  myFunction(a0123456789012345 * b0123456789012345, c0123456789012345 * d0123456789012345);
+}
+<<<
+main() {
+  myFunction(
+      a0123456789012345 * b0123456789012345,
+      c0123456789012345 * d0123456789012345);
+}
+>>> arguments, nested
+main() {
+  someFunctionOne(a012345678901234567890123456789,
+    someFunctionTwo(ba01234567890123456789, bb01234567890123456789, bc01234567890123456789),
+    someFunctionTwo(ca01234567890123456789, cb01234567890123456789, cc01234567890123456789),
+    d012345678901234567890123456789, e012345678901234567890123456789);
+}
+<<<
+main() {
+  someFunctionOne(
+      a012345678901234567890123456789,
+      someFunctionTwo(
+          ba01234567890123456789,
+          bb01234567890123456789,
+          bc01234567890123456789),
+      someFunctionTwo(
+          ca01234567890123456789,
+          cb01234567890123456789,
+          cc01234567890123456789),
+      d012345678901234567890123456789,
+      e012345678901234567890123456789);
+}
+>>> conditions, same operator
+main() {
+  if (a012345678901234567890123456789 || b012345678901234567890123456789 || c012345678901234567890123456789
+                  || d012345678901234567890123456789) {
+  }
+}
+<<<
+main() {
+  if (a012345678901234567890123456789 ||
+      b012345678901234567890123456789 ||
+      c012345678901234567890123456789 ||
+      d012345678901234567890123456789) {
+  }
+}
+>>> conditions, different operators
+main() {
+  if (a012345678901234567890123456789 && b012345678901234567890123456789 || c012345678901234567890123456789
+                  && d012345678901234567890123456789) {
+  }
+}
+<<<
+main() {
+  if (a012345678901234567890123456789 && b012345678901234567890123456789 ||
+      c012345678901234567890123456789 && d012345678901234567890123456789) {
+  }
+}
+>>> conditional expression
+main() {
+  MatchKind kind = element != null ? a012345678901234567890123456789 : b012345678901234567890123456789;
+}
+<<<
+main() {
+  MatchKind kind = element != null ?
+      a012345678901234567890123456789 :
+      b012345678901234567890123456789;
+}
+>>> expression function body
+myFunction() => a012345678901234567890123456789 + b012345678901234567890123456789;
+<<<
+myFunction() =>
+    a012345678901234567890123456789 + b012345678901234567890123456789;