Fraction class prototype and test (not to be committed).

runtime/vm/parser_test.cc

Index: runtime/vm/parser_test.cc
diff --git a/runtime/vm/parser_test.cc b/runtime/vm/parser_test.cc
index 319b13deb482863d154a4a22d1199656ae684a35..06f9e08f8121a0e931fce7541d798d457bfbf038 100644
--- a/runtime/vm/parser_test.cc
+++ b/runtime/vm/parser_test.cc
@@ -372,7 +372,7 @@ TEST_CASE(Parser_AllocateVariables_TwoChains) {
   EXPECT_STREQ(
       // bb captures only value2 from aa.  No others.
       "a.b.aa.bb\n"
-      " 0 ContextVar    level=0   begin=33  end=43  name=value2\n"
+      " 0 ContextVar    level=0   begin=34  end=44  name=value2\n"
       " 1 CurrentCtx    scope=0   begin=0   end=0"
       "   name=:current_context_var\n"
 
@@ -388,9 +388,9 @@ TEST_CASE(Parser_AllocateVariables_TwoChains) {
       "a.b.aa\n"
       " 0 CurrentCtx    scope=0   begin=0   end=0"
       "   name=:current_context_var\n"
-      " 1 ContextLevel  level=1   scope=2   begin=22  end=52\n"
-      " 2 ContextVar    level=1   begin=28  end=52  name=value2\n"
-      " 3 StackVar      scope=2   begin=30  end=52  name=bb\n"
+      " 1 ContextLevel  level=1   scope=2   begin=22  end=53\n"
+      " 2 ContextVar    level=1   begin=29  end=53  name=value2\n"
+      " 3 StackVar      scope=2   begin=31  end=53  name=bb\n"
 
       // Closure call saves current context.
       "_Closure.call\n"
@@ -400,10 +400,10 @@ TEST_CASE(Parser_AllocateVariables_TwoChains) {
 
       // b captures value1 from a.
       "a.b\n"
-      " 0 ContextVar    level=0   begin=14  end=62  name=value1\n"
+      " 0 ContextVar    level=0   begin=14  end=63  name=value1\n"
       " 1 CurrentCtx    scope=0   begin=0   end=0"
       "   name=:current_context_var\n"
-      " 2 StackVar      scope=2   begin=18  end=62  name=aa\n"
+      " 2 StackVar      scope=2   begin=18  end=63  name=aa\n"
 
       // Closure call saves current context.
       "_Closure.call\n"
@@ -415,9 +415,9 @@ TEST_CASE(Parser_AllocateVariables_TwoChains) {
       "a\n"
       " 0 CurrentCtx    scope=0   begin=0   end=0"
       "   name=:current_context_var\n"
-      " 1 ContextLevel  level=1   scope=2   begin=4   end=70\n"
-      " 2 ContextVar    level=1   begin=10  end=70  name=value1\n"
-      " 3 StackVar      scope=2   begin=12  end=70  name=b\n",
+      " 1 ContextLevel  level=1   scope=2   begin=4   end=71\n"
+      " 2 ContextVar    level=1   begin=10  end=71  name=value1\n"
+      " 3 StackVar      scope=2   begin=12  end=71  name=b\n",
       CaptureVarsAtLine(lib, "a", 7));
 }
 
@@ -453,8 +453,8 @@ TEST_CASE(Parser_AllocateVariables_Issue7681) {
   EXPECT_STREQ(
       // This frame saves the entry context instead of chaining.  Good.
       "doIt.<anonymous closure>\n"
-      " 0 ContextLevel  level=1   scope=1   begin=41  end=62\n"
-      " 1 ContextVar    level=1   begin=42  end=62  name=y\n"
+      " 0 ContextLevel  level=1   scope=1   begin=41  end=65\n"
+      " 1 ContextVar    level=1   begin=42  end=65  name=y\n"
       " 2 CurrentCtx    scope=0   begin=0   end=0"
       "   name=:current_context_var\n"
 
@@ -473,7 +473,7 @@ TEST_CASE(Parser_AllocateVariables_Issue7681) {
       "doIt\n"
       " 0 CurrentCtx    scope=0   begin=0   end=0"
       "   name=:current_context_var\n"
-      " 1 StackVar      scope=2   begin=35  end=77  name=x\n",
+      " 1 StackVar      scope=2   begin=35  end=80  name=x\n",
       CaptureVarsAtLine(lib, "doIt", 12));
 }
 
@@ -499,7 +499,7 @@ TEST_CASE(Parser_AllocateVariables_CaptureLoopVar) {
   EXPECT_STREQ(
       // inner function captures variable value.  That's fine.
       "outer.inner\n"
-      " 0 ContextVar    level=0   begin=32  end=42  name=value\n"
+      " 0 ContextVar    level=0   begin=33  end=43  name=value\n"
       " 1 CurrentCtx    scope=0   begin=0   end=0"
       "   name=:current_context_var\n"
 
@@ -514,10 +514,10 @@ TEST_CASE(Parser_AllocateVariables_CaptureLoopVar) {
       "outer\n"
       " 0 CurrentCtx    scope=0   begin=0   end=0"
       "   name=:current_context_var\n"
-      " 1 StackVar      scope=3   begin=12  end=50  name=i\n"
-      " 2 ContextLevel  level=1   scope=4   begin=20  end=50\n"
-      " 3 ContextVar    level=1   begin=28  end=50  name=value\n"
-      " 4 StackVar      scope=4   begin=30  end=50  name=inner\n",
+      " 1 StackVar      scope=3   begin=12  end=52  name=i\n"
+      " 2 ContextLevel  level=1   scope=4   begin=20  end=52\n"
+      " 3 ContextVar    level=1   begin=28  end=52  name=value\n"
+      " 4 StackVar      scope=4   begin=30  end=52  name=inner\n",
       CaptureVarsAtLine(lib, "outer", 5));
 }
 
@@ -542,7 +542,7 @@ TEST_CASE(Parser_AllocateVariables_MiddleChain) {
   EXPECT_VALID(lib);
   EXPECT_STREQ(
       "a.b.c\n"
-      " 0 ContextVar    level=0   begin=50  end=62  name=x\n"
+      " 0 ContextVar    level=0   begin=51  end=64  name=x\n"
       " 1 CurrentCtx    scope=0   begin=0   end=0"
       "   name=:current_context_var\n"
       "_Closure.call\n"
@@ -552,13 +552,13 @@ TEST_CASE(Parser_AllocateVariables_MiddleChain) {
 
       // Doesn't save the entry context.  Chains to parent instead.
       "a.b\n"
-      " 0 ContextVar    level=0   begin=12  end=71  name=x\n"
+      " 0 ContextVar    level=0   begin=12  end=73  name=x\n"
       " 1 CurrentCtx    scope=0   begin=0   end=0"
       "   name=:current_context_var\n"
-      " 2 StackVar      scope=2   begin=47  end=71  name=c\n"
-      " 3 ContextLevel  level=1   scope=3   begin=18  end=47\n"
-      " 4 ContextVar    level=1   begin=22  end=47  name=i\n"
-      " 5 StackVar      scope=4   begin=32  end=47  name=d\n"
+      " 2 StackVar      scope=2   begin=48  end=73  name=c\n"
+      " 3 ContextLevel  level=1   scope=3   begin=18  end=48\n"
+      " 4 ContextVar    level=1   begin=22  end=48  name=i\n"
+      " 5 StackVar      scope=4   begin=33  end=48  name=d\n"
 
       "_Closure.call\n"
       " 0 StackVar      scope=1   begin=0   end=4   name=this\n"
@@ -568,9 +568,9 @@ TEST_CASE(Parser_AllocateVariables_MiddleChain) {
       "a\n"
       " 0 CurrentCtx    scope=0   begin=0   end=0"
       "   name=:current_context_var\n"
-      " 1 ContextLevel  level=1   scope=2   begin=3   end=79\n"
-      " 2 ContextVar    level=1   begin=9   end=79  name=x\n"
-      " 3 StackVar      scope=2   begin=11  end=79  name=b\n",
+      " 1 ContextLevel  level=1   scope=2   begin=3   end=81\n"
+      " 2 ContextVar    level=1   begin=9   end=81  name=x\n"
+      " 3 StackVar      scope=2   begin=11  end=81  name=b\n",
       CaptureVarsAtLine(lib, "a", 10));
 }