[spec] reduce observable calls by inferring global/fullUnicode from t…

…he "flags" string
tc39 · Aug 9, 2018 · 888cdf7 · 888cdf7
1 parent 64706b5
commit 888cdf7
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Showing 3 changed files with 25 additions and 10 deletions.
diff --git a/index.html b/index.html
diff --git a/spec.emu b/spec.emu
@@ -52,8 +52,10 @@ contributors: Jordan Harband
 			1. Let _C_ be ? SpeciesConstructor(_R_, %RegExp%).
 			1. Let _flags_ be ? ToString(? Get(_R_, `"flags"`)).
 			1. Let _matcher_ be ? Construct(_C_, &laquo; _R_, _flags_ &raquo;).
-			1. Let _global_ be ? ToBoolean(? Get(_matcher_, `"global"`)).
-			1. Let _fullUnicode_ be ? ToBoolean(? Get(_matcher_, `"unicode"`).
+			1. If _flags_ contains `"g"`, let _global_ be *true*.
+			1. Else, let _global_ be *false*.
+			1. If _flags_ contains `"u"`, let _fullUnicode_ be *true*.
+			1. Else, let _fullUnicode_ be *false*.
 			1. Let _lastIndex_ be ? ToLength(? Get(_R_, `"lastIndex"`)).
 			1. Perform ? Set(_matcher_, `"lastIndex"`, _lastIndex_, *true*).
 		1. Else,

diff --git a/spec.md b/spec.md
@@ -30,8 +30,10 @@ The abstract operation *MatchAllIterator* performs the following steps:
     1. Let *C* be ? [SpeciesConstructor][species-constructor](*R*, %RegExp%).
     1. Let *flags* be ? [ToString][tostring](? [Get][get](*R*, `"flags"`)).
     1. Let *matcher* be ? [Construct][construct](*C*, « *R*, *flags* »).
-    1. Let *global* be ? [ToBoolean][to-boolean](? [Get][get](*matcher*, `"global"`)).
-    1. Let *fullUnicode* be ? [ToBoolean][to-boolean](? [Get][get](*matcher*, `"unicode"`)).
+    1. If *flags* contains `"g"`, let *global* be **true**.
+    1. Else, let *global* be *false*.
+    1. If *flags* contains `"u"`, let *fullUnicode* be **true**.
+    1. Else, let *fullUnicode* be **false**.
     1. Let *lastIndex* be ? [ToLength][tolength](? [Get][get](*R*, `"lastIndex"`)).
     1. Perform ? [Set][set](*matcher*, **"lastIndex"**, *lastIndex*, **true**).
   1. Else,