JavaScriptCore-7601.1.46.3.tar.gz

[apple/javascriptcore.git] / create_hash_table

diff --git a/create_hash_table b/create_hash_table
index 4184500ed4ccb6044f4a2ea8bde6ca79be4b7b63..b26eed0cf8404cd88c4f0c1a56d402f3b38677cc 100755 (executable)
--- a/create_hash_table
+++ b/create_hash_table
@@ -41,6 +41,10 @@ my @keys = ();
 my @attrs = ();
 my @values = ();
 my @hashes = ();
+my @table = ();
+my @links = ();
+
+my $hasSetter = "false";
 
 my $inside = 0;
 my $name;
@@ -74,6 +78,8 @@ while (<IN>) {
         @attrs = ();
         @values = ();
         @hashes = ();
+        @table = ();
+        @links = ();
 
         $inside = 0;
     } elsif (/^(\S+)\s*(\S+)\s*([\w\|]*)\s*(\w*)\s*$/ && $inside) {
@@ -88,9 +94,18 @@ while (<IN>) {
         if ($att =~ m/Function/) {
             push(@values, { "type" => "Function", "function" => $val, "params" => (length($param) ? $param : "") });
             #printf STDERR "WARNING: Number of arguments missing for $key/$val\n" if (length($param) == 0);
+        } elsif ($att =~ m/Accessor/) {
+            my $get = $val;
+            my $put = "nullptr";
+            $hasSetter = "true";
+            push(@values, { "type" => "Accessor", "get" => $get, "put" => $put });
         } elsif (length($att)) {
             my $get = $val;
-            my $put = !($att =~ m/ReadOnly/) ? "set" . jsc_ucfirst($val) : "0";
+            my $put = "0";
+            if (!($att =~ m/ReadOnly/)) {
+                $put = "set" . jsc_ucfirst($val);
+            }
+            $hasSetter = "true";
             push(@values, { "type" => "Property", "get" => $get, "put" => $put });
         } else {
             push(@values, { "type" => "Lexer", "value" => $val });        
@@ -149,8 +164,6 @@ sub leftShift($$) {
 
 sub calcCompactHashSize()
 {
-    my @table = ();
-    my @links = ();
     my $compactHashSize = ceilingToPowerOf2(2 * @keys);
     $compactHashSizeMask = $compactHashSize - 1;
     $compactSize = $compactHashSize;
@@ -179,7 +192,6 @@ sub calcCompactHashSize()
 
 # Paul Hsieh's SuperFastHash
 # http://www.azillionmonkeys.com/qed/hash.html
-# Ported from UString..
 sub hashValue($) {
   my @chars = split(/ */, $_[0]);
 
@@ -207,7 +219,7 @@ sub hashValue($) {
   }
 
   # Handle end case
-  if ($rem !=0) {
+  if ($rem != 0) {
     $hash += ord($chars[$s]);
     $hash ^= (leftShift($hash, 11)% $EXP2_32);
     $hash += $hash >> 17;
@@ -221,11 +233,15 @@ sub hashValue($) {
   $hash += ($hash >> 15);
   $hash = $hash% $EXP2_32;
   $hash ^= (leftShift($hash, 10)% $EXP2_32);
-  
-  # this avoids ever returning a hash code of 0, since that is used to
-  # signal "hash not computed yet", using a value that is likely to be
-  # effectively the same as 0 when the low bits are masked
-  $hash = 0x80000000  if ($hash == 0);
+
+  # Save 8 bits for StringImpl to use as flags.
+  $hash &= 0xffffff;
+
+  # This avoids ever returning a hash code of 0, since that is used to
+  # signal "hash not computed yet". Setting the high bit maintains
+  # reasonable fidelity to a hash code of 0 because it is likely to yield
+  # exactly 0 when hash lookup masks out the high bits.
+  $hash = (0x80000000 >> 8) if ($hash == 0);
 
   return $hash;
 }
@@ -238,37 +254,83 @@ sub output() {
 
     my $nameEntries = "${name}Values";
     $nameEntries =~ s/:/_/g;
+    my $nameIndex = "${name}Index";
+    $nameIndex =~ s/:/_/g;
 
+    print "\n#include \"JSCBuiltins.h\"\n";
     print "\n#include \"Lookup.h\"\n" if ($includelookup);
+
     if ($useNameSpace) {
         print "\nnamespace ${useNameSpace} {\n";
         print "\nusing namespace JSC;\n";
     } else {
         print "\nnamespace JSC {\n";
     }
-    my $count = scalar @keys + 1;
-    print "\nstatic const struct HashTableValue ${nameEntries}\[$count\] = {\n";
+
+    print "\nstatic const struct CompactHashIndex ${nameIndex}\[$compactSize\] = {\n";
+    for (my $i = 0; $i < $compactSize; $i++) {
+        my $T = -1;
+        if (defined($table[$i])) { $T = $table[$i]; }
+        my $L = -1;
+        if (defined($links[$i])) { $L = $links[$i]; }
+        print "    { $T, $L },\n";
+    }
+    print "};\n\n";
+
+    my $packedSize = scalar @keys;
+    print "\nstatic const struct HashTableValue ${nameEntries}\[$packedSize\] = {\n";
     my $i = 0;
     foreach my $key (@keys) {
         my $firstValue = "";
         my $secondValue = "";
+        my $firstCastStr = "";
+        my $secondCastStr = "";
 
         if ($values[$i]{"type"} eq "Function") {
+            $firstCastStr = "static_cast<NativeFunction>";
             $firstValue = $values[$i]{"function"};
             $secondValue = $values[$i]{"params"};
+        } elsif ($values[$i]{"type"} eq "Accessor") {
+            $firstCastStr = "static_cast<NativeFunction>";
+            $secondCastStr = "static_cast<NativeFunction>";
+            $firstValue = $values[$i]{"get"};
+            $secondValue = $values[$i]{"put"};
         } elsif ($values[$i]{"type"} eq "Property") {
+            $firstCastStr = "static_cast<PropertySlot::GetValueFunc>";
+            $secondCastStr = "static_cast<PutPropertySlot::PutValueFunc>";
             $firstValue = $values[$i]{"get"};
             $secondValue = $values[$i]{"put"};
         } elsif ($values[$i]{"type"} eq "Lexer") {
             $firstValue = $values[$i]{"value"};
             $secondValue = "0";
         }
-        print "   { \"$key\", $attrs[$i], (intptr_t)$firstValue, (intptr_t)$secondValue },\n";
+
+        my $intrinsic = "NoIntrinsic";
+        $intrinsic = "FromCharCodeIntrinsic" if ($key eq "fromCharCode");
+        if ($name eq "arrayPrototypeTable") {
+            $intrinsic = "ArrayPushIntrinsic" if ($key eq "push");
+            $intrinsic = "ArrayPopIntrinsic" if ($key eq "pop");
+        }
+        if ($name eq "regExpPrototypeTable") {
+            $intrinsic = "RegExpExecIntrinsic" if ($key eq "exec");
+            $intrinsic = "RegExpTestIntrinsic" if ($key eq "test");
+        }
+
+        if ($values[$i]{"type"} eq "Function")  {
+            my $tableHead = $name;
+            $tableHead =~ s/Table$//;
+            print " #if JSC_BUILTIN_EXISTS(" . uc($tableHead . $key) .")\n";
+            print "   { \"$key\", (($attrs[$i]) & ~Function) | Builtin, $intrinsic, (intptr_t)static_cast<BuiltinGenerator>(" . $tableHead . ucfirst($key) . "CodeGenerator), (intptr_t)$secondValue },\n";
+            print " #else\n"
+        }
+        print "   { \"$key\", $attrs[$i], $intrinsic, (intptr_t)" . $firstCastStr . "($firstValue), (intptr_t)" . $secondCastStr . "($secondValue) },\n";
+        if ($values[$i]{"type"} eq "Function")  {
+            print " #endif\n"
+        }
         $i++;
     }
-    print "   { 0, 0, 0, 0 }\n";
     print "};\n\n";
-    print "extern JSC_CONST_HASHTABLE HashTable $name =\n";
-    print "    \{ $compactSize, $compactHashSizeMask, $nameEntries, 0 \};\n";
+    print "JS_EXPORT_PRIVATE extern const struct HashTable $name =\n";
+    print "    \{ $packedSize, $compactHashSizeMask, $hasSetter, $nameEntries, 0, $nameIndex \};\n";
     print "} // namespace\n";
 }