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|
#
# WebKit IDL parser
#
# Copyright (C) 2005 Nikolas Zimmermann <wildfox@kde.org>
# Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
# Copyright (C) 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
# Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au>
# Copyright (C) Research In Motion Limited 2010. All rights reserved.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public License
# along with this library; see the file COPYING.LIB. If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
# Boston, MA 02110-1301, USA.
#
package CodeGenerator;
use strict;
use File::Find;
use Data::Dumper;
use Carp qw/longmess cluck confess/;
my $useDocument = "";
my $useGenerator = "";
my $useOutputDir = "";
my $useOutputHeadersDir = "";
my $useDirectories = "";
my $useLayerOnTop = 0;
my $preprocessor;
my $writeDependencies = 0;
my $defines = "";
my $targetIdlFilePath = "";
my $codeGenerator = 0;
my $verbose = 0;
my %numericTypeHash = ("int" => 1, "short" => 1, "long" => 1, "long long" => 1,
"unsigned int" => 1, "unsigned short" => 1,
"unsigned long" => 1, "unsigned long long" => 1,
"float" => 1, "double" => 1);
my %primitiveTypeHash = ( "boolean" => 1, "void" => 1, "Date" => 1);
my %stringTypeHash = ("DOMString" => 1, "AtomicString" => 1);
my %nonPointerTypeHash = ("DOMTimeStamp" => 1, "CompareHow" => 1);
my %svgAnimatedTypeHash = ("SVGAnimatedAngle" => 1, "SVGAnimatedBoolean" => 1,
"SVGAnimatedEnumeration" => 1, "SVGAnimatedInteger" => 1,
"SVGAnimatedLength" => 1, "SVGAnimatedLengthList" => 1,
"SVGAnimatedNumber" => 1, "SVGAnimatedNumberList" => 1,
"SVGAnimatedPreserveAspectRatio" => 1,
"SVGAnimatedRect" => 1, "SVGAnimatedString" => 1,
"SVGAnimatedTransformList" => 1);
my %svgAttributesInHTMLHash = ("class" => 1, "id" => 1, "onabort" => 1, "onclick" => 1,
"onerror" => 1, "onload" => 1, "onmousedown" => 1,
"onmousemove" => 1, "onmouseout" => 1, "onmouseover" => 1,
"onmouseup" => 1, "onresize" => 1, "onscroll" => 1,
"onunload" => 1);
my %svgTypeNeedingTearOff = (
"SVGAngle" => "SVGPropertyTearOff<SVGAngle>",
"SVGLength" => "SVGPropertyTearOff<SVGLength>",
"SVGLengthList" => "SVGListPropertyTearOff<SVGLengthList>",
"SVGMatrix" => "SVGPropertyTearOff<SVGMatrix>",
"SVGNumber" => "SVGPropertyTearOff<float>",
"SVGNumberList" => "SVGListPropertyTearOff<SVGNumberList>",
"SVGPathSegList" => "SVGPathSegListPropertyTearOff",
"SVGPoint" => "SVGPropertyTearOff<FloatPoint>",
"SVGPointList" => "SVGListPropertyTearOff<SVGPointList>",
"SVGPreserveAspectRatio" => "SVGPropertyTearOff<SVGPreserveAspectRatio>",
"SVGRect" => "SVGPropertyTearOff<FloatRect>",
"SVGStringList" => "SVGStaticListPropertyTearOff<SVGStringList>",
"SVGTransform" => "SVGPropertyTearOff<SVGTransform>",
"SVGTransformList" => "SVGTransformListPropertyTearOff"
);
my %svgTypeWithWritablePropertiesNeedingTearOff = (
"SVGPoint" => 1,
"SVGMatrix" => 1
);
# Cache of IDL file pathnames.
my $idlFiles;
# Default constructor
sub new
{
my $object = shift;
my $reference = { };
$useDirectories = shift;
$useGenerator = shift;
$useOutputDir = shift;
$useOutputHeadersDir = shift;
$useLayerOnTop = shift;
$preprocessor = shift;
$writeDependencies = shift;
$verbose = shift;
$targetIdlFilePath = shift;
bless($reference, $object);
return $reference;
}
sub ProcessDocument
{
my $object = shift;
$useDocument = shift;
$defines = shift;
my $ifaceName = "CodeGenerator" . $useGenerator;
require $ifaceName . ".pm";
# Dynamically load external code generation perl module
$codeGenerator = $ifaceName->new($object, $useLayerOnTop, $preprocessor, $writeDependencies, $verbose, $targetIdlFilePath);
unless (defined($codeGenerator)) {
my $interfaces = $useDocument->interfaces;
foreach my $interface (@$interfaces) {
print "Skipping $useGenerator code generation for IDL interface \"" . $interface->name . "\".\n" if $verbose;
}
return;
}
my $interfaces = $useDocument->interfaces;
foreach my $interface (@$interfaces) {
print "Generating $useGenerator bindings code for IDL interface \"" . $interface->name . "\"...\n" if $verbose;
$codeGenerator->GenerateInterface($interface, $defines);
$codeGenerator->WriteData($interface, $useOutputDir, $useOutputHeadersDir);
}
}
sub FileNamePrefix
{
my $object = shift;
my $ifaceName = "CodeGenerator" . $useGenerator;
require $ifaceName . ".pm";
# Dynamically load external code generation perl module
$codeGenerator = $ifaceName->new($object, $useLayerOnTop, $preprocessor, $writeDependencies, $verbose);
return $codeGenerator->FileNamePrefix();
}
sub UpdateFile
{
my $object = shift;
my $fileName = shift;
my $contents = shift;
open FH, "> $fileName" or die "Couldn't open $fileName: $!\n";
print FH $contents;
close FH;
}
sub ForAllParents
{
my $object = shift;
my $interface = shift;
my $beforeRecursion = shift;
my $afterRecursion = shift;
my $parentsOnly = shift;
my $recurse;
$recurse = sub {
my $currentInterface = shift;
for (@{$currentInterface->parents}) {
my $interfaceName = $_;
my $parentInterface = $object->ParseInterface($interfaceName, $parentsOnly);
if ($beforeRecursion) {
&$beforeRecursion($parentInterface) eq 'prune' and next;
}
&$recurse($parentInterface);
&$afterRecursion($parentInterface) if $afterRecursion;
}
};
&$recurse($interface);
}
sub AddMethodsConstantsAndAttributesFromParentInterfaces
{
# Add to $interface all of its inherited interface members, except for those
# inherited through $interface's first listed parent. If an array reference
# is passed in as $parents, the names of all ancestor interfaces visited
# will be appended to the array. If $collectDirectParents is true, then
# even the names of $interface's first listed parent and its ancestors will
# be appended to $parents.
my $object = shift;
my $interface = shift;
my $parents = shift;
my $collectDirectParents = shift;
my $first = 1;
$object->ForAllParents($interface, sub {
my $currentInterface = shift;
if ($first) {
# Ignore first parent class, already handled by the generation itself.
$first = 0;
if ($collectDirectParents) {
# Just collect the names of the direct ancestor interfaces,
# if necessary.
push(@$parents, $currentInterface->name);
$object->ForAllParents($currentInterface, sub {
my $currentInterface = shift;
push(@$parents, $currentInterface->name);
}, undef, 1);
}
# Prune the recursion here.
return 'prune';
}
# Collect the name of this additional parent.
push(@$parents, $currentInterface->name) if $parents;
print " | |> -> Inheriting "
. @{$currentInterface->constants} . " constants, "
. @{$currentInterface->functions} . " functions, "
. @{$currentInterface->attributes} . " attributes...\n | |>\n" if $verbose;
# Add this parent's members to $interface.
push(@{$interface->constants}, @{$currentInterface->constants});
push(@{$interface->functions}, @{$currentInterface->functions});
push(@{$interface->attributes}, @{$currentInterface->attributes});
});
}
sub FindSuperMethod
{
my ($object, $interface, $functionName) = @_;
my $indexer;
$object->ForAllParents($interface, undef, sub {
my $currentInterface = shift;
foreach my $function (@{$currentInterface->functions}) {
if ($function->signature->name eq $functionName) {
$indexer = $function->signature;
return 'prune';
}
}
});
return $indexer;
}
sub IDLFileForInterface
{
my $object = shift;
my $interfaceName = shift;
unless ($idlFiles) {
my $sourceRoot = $ENV{SOURCE_ROOT};
my @directories = map { $_ = "$sourceRoot/$_" if $sourceRoot && -d "$sourceRoot/$_"; $_ } @$useDirectories;
$idlFiles = { };
my $wanted = sub {
$idlFiles->{$1} = $File::Find::name if /^([A-Z].*)\.idl$/;
$File::Find::prune = 1 if /^\../;
};
find($wanted, @directories);
}
return $idlFiles->{$interfaceName};
}
sub ParseInterface
{
my $object = shift;
my $interfaceName = shift;
my $parentsOnly = shift;
return undef if $interfaceName eq 'Object';
# Step #1: Find the IDL file associated with 'interface'
my $filename = $object->IDLFileForInterface($interfaceName)
or confess("Could NOT find IDL file for interface \"$interfaceName\"!\n");
print " | |> Parsing parent IDL \"$filename\" for interface \"$interfaceName\"\n" if $verbose;
# Step #2: Parse the found IDL file (in quiet mode).
my $parser = IDLParser->new(1);
my $document = $parser->Parse($filename, $defines, $preprocessor, $parentsOnly);
foreach my $interface (@{$document->interfaces}) {
return $interface if $interface->name eq $interfaceName;
}
die("Could NOT find interface definition for $interfaceName in $filename");
}
# Helpers for all CodeGenerator***.pm modules
sub SkipIncludeHeader
{
my $object = shift;
my $type = shift;
return 1 if $primitiveTypeHash{$type};
return 1 if $numericTypeHash{$type};
return 1 if $type eq "String";
# Special case: SVGPoint.h / SVGNumber.h do not exist.
return 1 if $type eq "SVGPoint" or $type eq "SVGNumber";
return 0;
}
sub IsArrayType
{
my $object = shift;
my $type = shift;
# FIXME: Add proper support for T[], T[]?, sequence<T>.
return $type =~ m/\[\]$/;
}
sub IsConstructorTemplate
{
my $object = shift;
my $interface = shift;
my $template = shift;
return $interface->extendedAttributes->{"ConstructorTemplate"} && $interface->extendedAttributes->{"ConstructorTemplate"} eq $template;
}
sub IsPrimitiveType
{
my $object = shift;
my $type = shift;
return 1 if $primitiveTypeHash{$type};
return 1 if $numericTypeHash{$type};
return 0;
}
sub IsStringType
{
my $object = shift;
my $type = shift;
return 1 if $stringTypeHash{$type};
return 0;
}
sub IsNonPointerType
{
my $object = shift;
my $type = shift;
return 1 if $nonPointerTypeHash{$type} or $primitiveTypeHash{$type} or $numericTypeHash{$type};
return 0;
}
sub IsSVGTypeNeedingTearOff
{
my $object = shift;
my $type = shift;
return 1 if exists $svgTypeNeedingTearOff{$type};
return 0;
}
sub IsSVGTypeWithWritablePropertiesNeedingTearOff
{
my $object = shift;
my $type = shift;
return 1 if $svgTypeWithWritablePropertiesNeedingTearOff{$type};
return 0;
}
sub IsTypedArrayType
{
my $object = shift;
my $type = shift;
return 1 if (($type eq "ArrayBuffer") or ($type eq "ArrayBufferView"));
return 1 if (($type eq "Uint8Array") or ($type eq "Uint8ClampedArray") or ($type eq "Uint16Array") or ($type eq "Uint32Array"));
return 1 if (($type eq "Int8Array") or ($type eq "Int16Array") or ($type eq "Int32Array"));
return 1 if (($type eq "Float32Array") or ($type eq "Float64Array"));
return 0;
}
sub IsRefPtrType
{
my $object = shift;
my $type = shift;
return 0 if $object->IsPrimitiveType($type);
return 0 if $type eq "DOMString";
return 1;
}
sub GetSVGTypeNeedingTearOff
{
my $object = shift;
my $type = shift;
return $svgTypeNeedingTearOff{$type} if exists $svgTypeNeedingTearOff{$type};
return undef;
}
sub GetSVGWrappedTypeNeedingTearOff
{
my $object = shift;
my $type = shift;
my $svgTypeNeedingTearOff = $object->GetSVGTypeNeedingTearOff($type);
return $svgTypeNeedingTearOff if not $svgTypeNeedingTearOff;
if ($svgTypeNeedingTearOff =~ /SVGPropertyTearOff/) {
$svgTypeNeedingTearOff =~ s/SVGPropertyTearOff<//;
} elsif ($svgTypeNeedingTearOff =~ /SVGListPropertyTearOff/) {
$svgTypeNeedingTearOff =~ s/SVGListPropertyTearOff<//;
} elsif ($svgTypeNeedingTearOff =~ /SVGStaticListPropertyTearOff/) {
$svgTypeNeedingTearOff =~ s/SVGStaticListPropertyTearOff<//;
} elsif ($svgTypeNeedingTearOff =~ /SVGTransformListPropertyTearOff/) {
$svgTypeNeedingTearOff =~ s/SVGTransformListPropertyTearOff<//;
}
$svgTypeNeedingTearOff =~ s/>//;
return $svgTypeNeedingTearOff;
}
sub IsSVGAnimatedType
{
my $object = shift;
my $type = shift;
return 1 if $svgAnimatedTypeHash{$type};
return 0;
}
sub GetSequenceType
{
my $object = shift;
my $type = shift;
return $1 if $type =~ /^sequence<([\w\d_\s]+)>.*/;
return "";
}
sub GetArrayType
{
my $object = shift;
my $type = shift;
return $1 if $type =~ /^([\w\d_\s]+)\[\]/;
return "";
}
sub AssertNotSequenceType
{
my $object = shift;
my $type = shift;
die "Sequences must not be used as the type of an attribute, constant or exception field." if $object->GetSequenceType($type);
}
# Uppercase the first letter while respecting WebKit style guidelines.
# E.g., xmlEncoding becomes XMLEncoding, but xmlllang becomes Xmllang.
sub WK_ucfirst
{
my ($object, $param) = @_;
my $ret = ucfirst($param);
$ret =~ s/Xml/XML/ if $ret =~ /^Xml[^a-z]/;
return $ret;
}
# Lowercase the first letter while respecting WebKit style guidelines.
# URL becomes url, but SetURL becomes setURL.
sub WK_lcfirst
{
my ($object, $param) = @_;
my $ret = lcfirst($param);
$ret =~ s/hTML/html/ if $ret =~ /^hTML/;
$ret =~ s/uRL/url/ if $ret =~ /^uRL/;
$ret =~ s/jS/js/ if $ret =~ /^jS/;
$ret =~ s/xML/xml/ if $ret =~ /^xML/;
$ret =~ s/xSLT/xslt/ if $ret =~ /^xSLT/;
# For HTML5 FileSystem API Flags attributes.
# (create is widely used to instantiate an object and must be avoided.)
$ret =~ s/^create/isCreate/ if $ret =~ /^create$/;
$ret =~ s/^exclusive/isExclusive/ if $ret =~ /^exclusive$/;
return $ret;
}
# Return the C++ namespace that a given attribute name string is defined in.
sub NamespaceForAttributeName
{
my ($object, $interfaceName, $attributeName) = @_;
return "SVGNames" if $interfaceName =~ /^SVG/ && !$svgAttributesInHTMLHash{$attributeName};
return "HTMLNames";
}
# Identifies overloaded functions and for each function adds an array with
# links to its respective overloads (including itself).
sub LinkOverloadedFunctions
{
my ($object, $interface) = @_;
my %nameToFunctionsMap = ();
foreach my $function (@{$interface->functions}) {
my $name = $function->signature->name;
$nameToFunctionsMap{$name} = [] if !exists $nameToFunctionsMap{$name};
push(@{$nameToFunctionsMap{$name}}, $function);
$function->{overloads} = $nameToFunctionsMap{$name};
$function->{overloadIndex} = @{$nameToFunctionsMap{$name}};
}
}
sub AttributeNameForGetterAndSetter
{
my ($generator, $attribute) = @_;
my $attributeName = $attribute->signature->name;
if ($attribute->signature->extendedAttributes->{"ImplementedAs"}) {
$attributeName = $attribute->signature->extendedAttributes->{"ImplementedAs"};
}
my $attributeType = $attribute->signature->type;
# Avoid clash with C++ keyword.
$attributeName = "_operator" if $attributeName eq "operator";
# SVGAElement defines a non-virtual "String& target() const" method which clashes with "virtual String target() const" in Element.
# To solve this issue the SVGAElement method was renamed to "svgTarget", take care of that when calling this method.
$attributeName = "svgTarget" if $attributeName eq "target" and $attributeType eq "SVGAnimatedString";
# SVG animated types need to use a special attribute name.
# The rest of the special casing for SVG animated types is handled in the language-specific code generators.
$attributeName .= "Animated" if $generator->IsSVGAnimatedType($attributeType);
return $attributeName;
}
sub ContentAttributeName
{
my ($generator, $implIncludes, $interfaceName, $attribute) = @_;
my $contentAttributeName = $attribute->signature->extendedAttributes->{"Reflect"};
return undef if !$contentAttributeName;
$contentAttributeName = lc $generator->AttributeNameForGetterAndSetter($attribute) if $contentAttributeName eq "VALUE_IS_MISSING";
my $namespace = $generator->NamespaceForAttributeName($interfaceName, $contentAttributeName);
$implIncludes->{"${namespace}.h"} = 1;
return "WebCore::${namespace}::${contentAttributeName}Attr";
}
sub CanUseFastAttribute
{
my ($generator, $attribute) = @_;
my $attributeType = $attribute->signature->type;
# HTMLNames::styleAttr cannot be used with fast{Get,Has}Attribute but we do not [Reflect] the
# style attribute.
return !$generator->IsSVGAnimatedType($attributeType);
}
sub GetterExpression
{
my ($generator, $implIncludes, $interfaceName, $attribute) = @_;
my $contentAttributeName = $generator->ContentAttributeName($implIncludes, $interfaceName, $attribute);
if (!$contentAttributeName) {
return ($generator->WK_lcfirst($generator->AttributeNameForGetterAndSetter($attribute)));
}
my $functionName;
if ($attribute->signature->extendedAttributes->{"URL"}) {
$functionName = "getURLAttribute";
} elsif ($attribute->signature->type eq "boolean") {
my $namespace = $generator->NamespaceForAttributeName($interfaceName, $contentAttributeName);
if ($generator->CanUseFastAttribute($attribute)) {
$functionName = "fastHasAttribute";
} else {
$functionName = "hasAttribute";
}
} elsif ($attribute->signature->type eq "long") {
$functionName = "getIntegralAttribute";
} elsif ($attribute->signature->type eq "unsigned long") {
$functionName = "getUnsignedIntegralAttribute";
} else {
if ($contentAttributeName eq "WebCore::HTMLNames::idAttr") {
$functionName = "getIdAttribute";
$contentAttributeName = "";
} elsif ($contentAttributeName eq "WebCore::HTMLNames::nameAttr") {
$functionName = "getNameAttribute";
$contentAttributeName = "";
} elsif ($generator->CanUseFastAttribute($attribute)) {
$functionName = "fastGetAttribute";
} else {
$functionName = "getAttribute";
}
}
return ($functionName, $contentAttributeName);
}
sub SetterExpression
{
my ($generator, $implIncludes, $interfaceName, $attribute) = @_;
my $contentAttributeName = $generator->ContentAttributeName($implIncludes, $interfaceName, $attribute);
if (!$contentAttributeName) {
return ("set" . $generator->WK_ucfirst($generator->AttributeNameForGetterAndSetter($attribute)));
}
my $functionName;
if ($attribute->signature->type eq "boolean") {
$functionName = "setBooleanAttribute";
} elsif ($attribute->signature->type eq "long") {
$functionName = "setIntegralAttribute";
} elsif ($attribute->signature->type eq "unsigned long") {
$functionName = "setUnsignedIntegralAttribute";
} else {
$functionName = "setAttribute";
}
return ($functionName, $contentAttributeName);
}
sub GenerateConditionalString
{
my $generator = shift;
my $node = shift;
my $conditional = $node->extendedAttributes->{"Conditional"};
if ($conditional) {
return $generator->GenerateConditionalStringFromAttributeValue($conditional);
} else {
return "";
}
}
sub GenerateConditionalStringFromAttributeValue
{
my $generator = shift;
my $conditional = shift;
my $operator = ($conditional =~ /&/ ? '&' : ($conditional =~ /\|/ ? '|' : ''));
if ($operator) {
# Avoid duplicated conditions.
my %conditions;
map { $conditions{$_} = 1 } split('\\' . $operator, $conditional);
return "ENABLE(" . join(") $operator$operator ENABLE(", sort keys %conditions) . ")";
} else {
return "ENABLE(" . $conditional . ")";
}
}
sub GenerateCompileTimeCheckForEnumsIfNeeded
{
my ($generator, $interface) = @_;
my $interfaceName = $interface->name;
my @checks = ();
# If necessary, check that all constants are available as enums with the same value.
if (!$interface->extendedAttributes->{"DoNotCheckConstants"} && @{$interface->constants}) {
push(@checks, "\n");
foreach my $constant (@{$interface->constants}) {
my $reflect = $constant->extendedAttributes->{"Reflect"};
my $name = $reflect ? $reflect : $constant->name;
my $value = $constant->value;
my $conditional = $constant->extendedAttributes->{"Conditional"};
if ($conditional) {
my $conditionalString = $generator->GenerateConditionalStringFromAttributeValue($conditional);
push(@checks, "#if ${conditionalString}\n");
}
if ($constant->extendedAttributes->{"ImplementedBy"}) {
push(@checks, "COMPILE_ASSERT($value == " . $constant->extendedAttributes->{"ImplementedBy"} . "::$name, ${interfaceName}Enum${name}IsWrongUseDoNotCheckConstants);\n");
} else {
push(@checks, "COMPILE_ASSERT($value == ${interfaceName}::$name, ${interfaceName}Enum${name}IsWrongUseDoNotCheckConstants);\n");
}
if ($conditional) {
push(@checks, "#endif\n");
}
}
push(@checks, "\n");
}
return @checks;
}
sub ExtendedAttributeContains
{
my $object = shift;
my $callWith = shift;
return 0 unless $callWith;
my $keyword = shift;
my @callWithKeywords = split /\s*\|\s*/, $callWith;
return grep { $_ eq $keyword } @callWithKeywords;
}
# FIXME: This is backwards. We currently name the interface and the IDL files with the implementation name. We
# should use the real interface name in the IDL files and then use ImplementedAs to map this to the implementation name.
sub GetVisibleInterfaceName
{
my $object = shift;
my $interface = shift;
my $interfaceName = $interface->extendedAttributes->{"InterfaceName"};
return $interfaceName ? $interfaceName : $interface->name;
}
sub IsSubType
{
my $object = shift;
my $interface = shift;
my $interfaceName = shift;
my $found = 0;
return 1 if $interfaceName eq $interface->name;
$object->ForAllParents($interface, sub {
my $currentInterface = shift;
if ($currentInterface->name eq $interfaceName) {
$found = 1;
}
return "prune" if $found;
}, 0, 1);
return $found;
}
1;
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