Introduce Promise mapping to the IDL generator

Source/bindings/scripts/deprecated_idl_parser.pm

Index: Source/bindings/scripts/deprecated_idl_parser.pm
diff --git a/Source/bindings/scripts/deprecated_idl_parser.pm b/Source/bindings/scripts/deprecated_idl_parser.pm
index 9148d72b4377812fd2e86074816b1ac8ca90e0d2..2affe5e3dbb33b5ce43785ce26ac04113559bbd2 100644
--- a/Source/bindings/scripts/deprecated_idl_parser.pm
+++ b/Source/bindings/scripts/deprecated_idl_parser.pm
@@ -331,30 +331,32 @@ sub typeRemoveNullableSuffix
     return $type;
 }
 
+# Promise is not yet in the Web IDL spec but is going to be speced
+# as primitive types in the future.
 my $nextAttribute_1 = '^(attribute|inherit|readonly)$';
 my $nextPrimitiveType_1 = '^(int|long|short|unsigned)$';
 my $nextPrimitiveType_2 = '^(double|float|unrestricted)$';
-my $nextArgumentList_1 = '^(\(|::|ByteString|DOMString|Date|\[|any|boolean|byte|double|float|in|int|long|object|octet|optional|sequence|short|unrestricted|unsigned)$';
+my $nextArgumentList_1 = '^(\(|::|ByteString|DOMString|Promise|Date|\[|any|boolean|byte|double|float|in|int|long|object|octet|optional|sequence|short|unrestricted|unsigned)$';
 my $nextNonAnyType_1 = '^(boolean|byte|double|float|int|long|octet|short|unrestricted|unsigned)$';
-my $nextInterfaceMember_1 = '^(\(|::|ByteString|DOMString|Date|any|attribute|boolean|byte|creator|deleter|double|float|getter|inherit|int|legacycaller|long|object|octet|readonly|sequence|serializer|setter|short|static|stringifier|unrestricted|unsigned|void)$';
+my $nextInterfaceMember_1 = '^(\(|::|ByteString|DOMString|Promise|Date|any|attribute|boolean|byte|creator|deleter|double|float|getter|inherit|int|legacycaller|long|object|octet|readonly|sequence|serializer|setter|short|static|stringifier|unrestricted|unsigned|void)$';
 my $nextOptionalIteratorInterfaceOrObject_1 = '^(;|=)$';
 my $nextAttributeOrOperationOrIterator_1 = '^(static|stringifier)$';
-my $nextAttributeOrOperationOrIterator_2 = '^(\(|::|ByteString|DOMString|Date|any|boolean|byte|creator|deleter|double|float|getter|int|legacycaller|long|object|octet|sequence|setter|short|unrestricted|unsigned|void)$';
+my $nextAttributeOrOperationOrIterator_2 = '^(\(|::|ByteString|DOMString|Promise|Date|any|boolean|byte|creator|deleter|double|float|getter|int|legacycaller|long|object|octet|sequence|setter|short|unrestricted|unsigned|void)$';
 my $nextUnrestrictedFloatType_1 = '^(double|float)$';
 my $nextExtendedAttributeRest3_1 = '^(\,|::|\])$';
-my $nextExceptionField_1 = '^(\(|::|ByteString|DOMString|Date|any|boolean|byte|double|float|int|long|object|octet|sequence|short|unrestricted|unsigned)$';
-my $nextType_1 = '^(::|ByteString|DOMString|Date|any|boolean|byte|double|float|int|long|object|octet|sequence|short|unrestricted|unsigned)$';
+my $nextExceptionField_1 = '^(\(|::|ByteString|DOMString|Promise|Date|any|boolean|byte|double|float|int|long|object|octet|sequence|short|unrestricted|unsigned)$';
+my $nextType_1 = '^(::|ByteString|DOMString|Promise|Date|any|boolean|byte|double|float|int|long|object|octet|sequence|short|unrestricted|unsigned)$';
 my $nextSpecials_1 = '^(creator|deleter|getter|legacycaller|setter)$';
 my $nextDefinitions_1 = '^(::|callback|dictionary|enum|exception|interface|partial|typedef)$';
-my $nextExceptionMembers_1 = '^(\(|::|ByteString|DOMString|Date|\[|any|boolean|byte|const|double|float|int|long|object|octet|optional|sequence|short|unrestricted|unsigned)$';
+my $nextExceptionMembers_1 = '^(\(|::|ByteString|DOMString|Promise|Date|\[|any|boolean|byte|const|double|float|int|long|object|octet|optional|sequence|short|unrestricted|unsigned)$';
 my $nextAttributeRest_1 = '^(attribute|readonly)$';
-my $nextInterfaceMembers_1 = '^(\(|::|ByteString|DOMString|Date|any|attribute|boolean|byte|const|creator|deleter|double|float|getter|inherit|int|legacycaller|long|object|octet|readonly|sequence|serializer|setter|short|static|stringifier|unrestricted|unsigned|void)$';
-my $nextSingleType_1 = '^(::|ByteString|DOMString|Date|boolean|byte|double|float|int|long|object|octet|sequence|short|unrestricted|unsigned)$';
+my $nextInterfaceMembers_1 = '^(\(|::|ByteString|DOMString|Promise|Date|any|attribute|boolean|byte|const|creator|deleter|double|float|getter|inherit|int|legacycaller|long|object|octet|readonly|sequence|serializer|setter|short|static|stringifier|unrestricted|unsigned|void)$';
+my $nextSingleType_1 = '^(::|ByteString|DOMString|Promise|Date|boolean|byte|double|float|int|long|object|octet|sequence|short|unrestricted|unsigned)$';
 my $nextArgumentName_1 = '^(attribute|callback|const|creator|deleter|dictionary|enum|exception|getter|implements|inherit|interface|legacycaller|partial|serializer|setter|static|stringifier|typedef|unrestricted)$';
 my $nextConstValue_1 = '^(false|true)$';
 my $nextConstValue_2 = '^(-|Infinity|NaN)$';
 my $nextDefinition_1 = '^(callback|interface)$';
-my $nextAttributeOrOperationRest_1 = '^(\(|::|ByteString|DOMString|Date|any|boolean|byte|double|float|int|long|object|octet|sequence|short|unrestricted|unsigned|void)$';
+my $nextAttributeOrOperationRest_1 = '^(\(|::|ByteString|DOMString|Promise|Date|any|boolean|byte|double|float|int|long|object|octet|sequence|short|unrestricted|unsigned|void)$';
 my $nextUnsignedIntegerType_1 = '^(int|long|short)$';
 my $nextDefaultValue_1 = '^(-|Infinity|NaN|false|null|true)$';
 
@@ -1862,6 +1864,10 @@ sub parseNonAnyType
         $self->assertTokenValue($self->getToken(), "DOMString", __LINE__);
         return "DOMString" . $self->parseTypeSuffix();
     }
+    if ($next->value() eq "Promise") {
+        $self->assertTokenValue($self->getToken(), "Promise", __LINE__);
+        return "Promise" . $self->parseTypeSuffix();
+    }
     if ($next->value() eq "sequence") {
         $self->assertTokenValue($self->getToken(), "sequence", __LINE__);
         $self->assertTokenValue($self->getToken(), "<", __LINE__);