Bug 1579862 - Making single-arg constructors explicit;r=arai

Differential Revision: https://phabricator.services.mozilla.com/D45813

--HG--
extra : moz-landing-system : lando

js/src/frontend/BinASTTokenReaderContext.cpp

@@ -1734,11 +1734,11 @@ HuffmanTableImplementationGeneric<T>::begin() const {
   return this->implementation.match(
       [](const HuffmanTableImplementationSaturated<T>& implementation)
           -> HuffmanTableImplementationGeneric<T>::Iterator {
-        return implementation.begin();
+        return Iterator(implementation.begin());
       },
       [](const HuffmanTableImplementationMap<T>& implementation)
           -> HuffmanTableImplementationGeneric<T>::Iterator {
-        return implementation.begin();
+        return Iterator(implementation.begin());
       },
       [](const HuffmanTableUnreachable&)
           -> HuffmanTableImplementationGeneric<T>::Iterator {
@@ -1752,11 +1752,11 @@ HuffmanTableImplementationGeneric<T>::end() const {
   return this->implementation.match(
       [](const HuffmanTableImplementationSaturated<T>& implementation)
           -> HuffmanTableImplementationGeneric<T>::Iterator {
-        return implementation.end();
+        return Iterator(implementation.end());
       },
       [](const HuffmanTableImplementationMap<T>& implementation)
           -> HuffmanTableImplementationGeneric<T>::Iterator {
-        return implementation.end();
+        return Iterator(implementation.end());
       },
       [](const HuffmanTableUnreachable&)
           -> HuffmanTableImplementationGeneric<T>::Iterator {
@@ -1964,7 +1964,7 @@ HuffmanEntry<const T*> HuffmanTableImplementationMap<T>::lookup(
     const uint32_t bits = lookup.leadingBits(bitLength);
     const HuffmanKey key(bits, bitLength);
     const FlatHuffmanKey flat(key);
-    if (auto ptr = values.lookup(key)) {
+    if (auto ptr = values.lookup(flat)) {
       // Entry found.
       return HuffmanEntry<const T*>(bits, bitLength, &ptr->value());
     }

js/src/frontend/BinASTTokenReaderContext.h

@@ -130,8 +130,8 @@ struct HuffmanKey {
 
 // A Huffman key represented as a single `uint32_t`.
 struct FlatHuffmanKey {
-  FlatHuffmanKey(HuffmanKey key);
-  FlatHuffmanKey(const HuffmanKey* key);
+  explicit FlatHuffmanKey(HuffmanKey key);
+  explicit FlatHuffmanKey(const HuffmanKey* key);
 
   // 0b0000000L_LLLLCCCC_CCCCCCCC_CCCCCCCC
   // Where:
@@ -489,8 +489,8 @@ struct HuffmanTableUnreachable {};
 //
 template <typename T>
 struct HuffmanTableImplementationGeneric {
-  HuffmanTableImplementationGeneric(JSContext* cx);
-  HuffmanTableImplementationGeneric() = delete;
+  explicit HuffmanTableImplementationGeneric(JSContext* cx);
+  explicit HuffmanTableImplementationGeneric() = delete;
 
   // Initialize a Huffman table containing a single value.
   JS::Result<Ok> initWithSingleValue(JSContext* cx, T&& value);
@@ -511,8 +511,11 @@ struct HuffmanTableImplementationGeneric {
   size_t length() const;
 
   struct Iterator {
-    Iterator(typename HuffmanTableImplementationSaturated<T>::Iterator&&);
-    Iterator(typename HuffmanTableImplementationMap<T>::Iterator&&);
+    explicit Iterator(
+        typename HuffmanTableImplementationSaturated<T>::Iterator&&);
+    explicit Iterator(typename HuffmanTableImplementationMap<T>::Iterator&&);
+    Iterator(Iterator&&) = default;
+    Iterator(const Iterator&) = default;
     void operator++();
     const T* operator*() const;
     bool operator==(const Iterator& other) const;