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Merge pull request #112 from lightpanda-io/netsurf-node-external

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netsurf: create alias NodeExternal
This commit is contained in:
Pierre Tachoire
2023-12-07 12:14:05 +01:00
committed by GitHub
parent 3850d0f685 101fad1e72
commit 372429ba3d
1 changed files with 104 additions and 127 deletions
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231
src/netsurf.zig
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@@ -39,9 +39,9 @@ const c = @cImport({
// - node: the node interface instance
inline fn getVtable(comptime VtableT: type, comptime NodeT: type, node: anytype) VtableT {
// first align correctly the node interface
const node_aligned: *align(@alignOf([*c]c.dom_node)) NodeT = @alignCast(node);
const node_aligned: *align(@alignOf(NodeExternal)) NodeT = @alignCast(node);
// then convert the node interface to a base node
const node_base = @as([*c]c.dom_node, @ptrCast(node_aligned));
const node_base = @as(NodeExternal, @ptrCast(node_aligned));
// retrieve the vtable on the base node
const vtable = node_base.*.vtable.?;
@@ -336,121 +336,6 @@ fn DOMErr(except: DOMException) DOMError!void {
// EventTarget
pub const EventTarget = c.dom_event_target;
// NamedNodeMap
pub const NamedNodeMap = c.dom_namednodemap;
pub fn namedNodeMapGetLength(nnm: *NamedNodeMap) !u32 {
var ln: u32 = undefined;
const err = c.dom_namednodemap_get_length(nnm, &ln);
try DOMErr(err);
return ln;
}
pub fn namedNodeMapItem(nnm: *NamedNodeMap, index: u32) !?*Attribute {
var n: [*c]c.dom_node = undefined;
const err = c._dom_namednodemap_item(nnm, index, &n);
try DOMErr(err);
if (n == null) return null;
// cast [*c]c.dom_node into *Attribute
return @as(*Attribute, @ptrCast(n));
}
pub fn namedNodeMapGetNamedItem(nnm: *NamedNodeMap, qname: []const u8) !?*Attribute {
var n: [*c]c.dom_node = undefined;
const err = c._dom_namednodemap_get_named_item(nnm, try strFromData(qname), &n);
try DOMErr(err);
if (n == null) return null;
// cast [*c]c.dom_node into *Attribute
return @as(*Attribute, @ptrCast(n));
}
pub fn namedNodeMapGetNamedItemNS(
nnm: *NamedNodeMap,
namespace: []const u8,
localname: []const u8,
) !?*Attribute {
var n: [*c]c.dom_node = undefined;
const err = c._dom_namednodemap_get_named_item_ns(
nnm,
try strFromData(namespace),
try strFromData(localname),
&n,
);
try DOMErr(err);
if (n == null) return null;
// cast [*c]c.dom_node into *Attribute
return @as(*Attribute, @ptrCast(n));
}
// Convert a parser pointer to a public dom_node pointer.
fn toDOMNode(comptime T: type, v: *T) [*c]c.dom_node {
const v_aligned: *align(@alignOf([*c]c.dom_node)) T = @alignCast(v);
return @ptrCast(v_aligned);
}
pub fn namedNodeMapSetNamedItem(nnm: *NamedNodeMap, attr: *Attribute) !?*Attribute {
var n: [*c]c.dom_node = undefined;
const err = c._dom_namednodemap_set_named_item(
nnm,
toDOMNode(Attribute, attr),
&n,
);
try DOMErr(err);
if (n == null) return null;
// cast [*c]c.dom_node into *Attribute
return @as(*Attribute, @ptrCast(n));
}
pub fn namedNodeMapSetNamedItemNS(nnm: *NamedNodeMap, attr: *Attribute) !?*Attribute {
var n: [*c]c.dom_node = undefined;
const err = c._dom_namednodemap_set_named_item_ns(
nnm,
toDOMNode(Attribute, attr),
&n,
);
try DOMErr(err);
if (n == null) return null;
// cast [*c]c.dom_node into *Attribute
return @as(*Attribute, @ptrCast(n));
}
pub fn namedNodeMapRemoveNamedItem(nnm: *NamedNodeMap, qname: []const u8) !*Attribute {
var n: [*c]c.dom_node = undefined;
const err = c._dom_namednodemap_remove_named_item(nnm, try strFromData(qname), &n);
try DOMErr(err);
// cast [*c]c.dom_node into *Attribute
return @as(*Attribute, @ptrCast(n));
}
pub fn namedNodeMapRemoveNamedItemNS(
nnm: *NamedNodeMap,
namespace: []const u8,
localname: []const u8,
) !*Attribute {
var n: [*c]c.dom_node = undefined;
const err = c._dom_namednodemap_remove_named_item_ns(
nnm,
try strFromData(namespace),
try strFromData(localname),
&n,
);
try DOMErr(err);
// cast [*c]c.dom_node into *Attribute
return @as(*Attribute, @ptrCast(n));
}
// NodeType
pub const NodeType = enum(u4) {
@@ -479,14 +364,113 @@ pub fn nodeListLength(nodeList: *NodeList) !u32 {
}
pub fn nodeListItem(nodeList: *NodeList, index: u32) !?*Node {
var n: [*c]c.dom_node = undefined;
var n: NodeExternal = undefined;
const err = c._dom_nodelist_item(nodeList, index, &n);
try DOMErr(err);
if (n == null) return null;
return @as(*Node, @ptrCast(n));
}
// NodeExternal is the libdom public representation of a Node.
// Since we use the internal representation (dom_node_internal), we declare
// here a private version useful for some netsurf function call.
const NodeExternal = [*c]c.dom_node;
// Convert a parser pointer to a NodeExternal pointer.
fn toNodeExternal(comptime T: type, v: *T) NodeExternal {
const v_aligned: *align(@alignOf(NodeExternal)) T = @alignCast(v);
return @ptrCast(v_aligned);
}
// NamedNodeMap
pub const NamedNodeMap = c.dom_namednodemap;
pub fn namedNodeMapGetLength(nnm: *NamedNodeMap) !u32 {
var ln: u32 = undefined;
const err = c.dom_namednodemap_get_length(nnm, &ln);
try DOMErr(err);
return ln;
}
pub fn namedNodeMapItem(nnm: *NamedNodeMap, index: u32) !?*Attribute {
var n: NodeExternal = undefined;
const err = c._dom_namednodemap_item(nnm, index, &n);
try DOMErr(err);
if (n == null) return null;
// cast [*c]c.dom_node into *Node
return @as(*Node, @ptrCast(n));
return @as(*Attribute, @ptrCast(n));
}
pub fn namedNodeMapGetNamedItem(nnm: *NamedNodeMap, qname: []const u8) !?*Attribute {
var n: NodeExternal = undefined;
const err = c._dom_namednodemap_get_named_item(nnm, try strFromData(qname), &n);
try DOMErr(err);
if (n == null) return null;
return @as(*Attribute, @ptrCast(n));
}
pub fn namedNodeMapGetNamedItemNS(
nnm: *NamedNodeMap,
namespace: []const u8,
localname: []const u8,
) !?*Attribute {
var n: NodeExternal = undefined;
const err = c._dom_namednodemap_get_named_item_ns(
nnm,
try strFromData(namespace),
try strFromData(localname),
&n,
);
try DOMErr(err);
if (n == null) return null;
return @as(*Attribute, @ptrCast(n));
}
pub fn namedNodeMapSetNamedItem(nnm: *NamedNodeMap, attr: *Attribute) !?*Attribute {
var n: NodeExternal = undefined;
const err = c._dom_namednodemap_set_named_item(
nnm,
toNodeExternal(Attribute, attr),
&n,
);
try DOMErr(err);
if (n == null) return null;
return @as(*Attribute, @ptrCast(n));
}
pub fn namedNodeMapSetNamedItemNS(nnm: *NamedNodeMap, attr: *Attribute) !?*Attribute {
var n: NodeExternal = undefined;
const err = c._dom_namednodemap_set_named_item_ns(
nnm,
toNodeExternal(Attribute, attr),
&n,
);
try DOMErr(err);
if (n == null) return null;
return @as(*Attribute, @ptrCast(n));
}
pub fn namedNodeMapRemoveNamedItem(nnm: *NamedNodeMap, qname: []const u8) !*Attribute {
var n: NodeExternal = undefined;
const err = c._dom_namednodemap_remove_named_item(nnm, try strFromData(qname), &n);
try DOMErr(err);
return @as(*Attribute, @ptrCast(n));
}
pub fn namedNodeMapRemoveNamedItemNS(
nnm: *NamedNodeMap,
namespace: []const u8,
localname: []const u8,
) !*Attribute {
var n: NodeExternal = undefined;
const err = c._dom_namednodemap_remove_named_item_ns(
nnm,
try strFromData(namespace),
try strFromData(localname),
&n,
);
try DOMErr(err);
return @as(*Attribute, @ptrCast(n));
}
// Node
@@ -605,7 +589,6 @@ pub fn nodeValue(node: *Node) !?[]const u8 {
const err = nodeVtable(node).dom_node_get_node_value.?(node, &s);
try DOMErr(err);
if (s == null) return null;
return strToData(s.?);
}
@@ -698,7 +681,6 @@ pub fn nodeLookupPrefix(node: *Node, namespace: []const u8) !?[]const u8 {
const err = nodeVtable(node).dom_node_lookup_prefix.?(node, try strFromData(namespace), &s);
try DOMErr(err);
if (s == null) return null;
return strToData(s.?);
}
@@ -707,7 +689,6 @@ pub fn nodeLookupNamespaceURI(node: *Node, prefix: ?[]const u8) !?[]const u8 {
const err = nodeVtable(node).dom_node_lookup_namespace.?(node, try strFromData(prefix.?), &s);
try DOMErr(err);
if (s == null) return null;
return strToData(s.?);
}
@@ -1180,7 +1161,6 @@ pub fn documentHTMLParseFromFile(filename: [:0]const u8) !*DocumentHTML {
// create a null terminated c string.
const doc = c.wr_create_doc_dom_from_file(filename.ptr);
if (doc == null) return error.ParserError;
return @as(*DocumentHTML, @ptrCast(doc.?));
}
@@ -1192,7 +1172,6 @@ pub fn documentHTMLParseFromStrAlloc(allocator: std.mem.Allocator, str: []const
// create a null terminated c string.
const cstr = try allocator.dupeZ(u8, str);
defer allocator.free(cstr);
return documentHTMLParseFromStr(cstr);
}
@@ -1201,7 +1180,6 @@ pub fn documentHTMLParseFromStrAlloc(allocator: std.mem.Allocator, str: []const
pub fn documentHTMLParseFromStr(cstr: [:0]const u8) !*DocumentHTML {
const doc = c.wr_create_doc_dom_from_string(cstr.ptr);
if (doc == null) return error.ParserError;
return @as(*DocumentHTML, @ptrCast(doc.?));
}
@@ -1220,6 +1198,5 @@ pub inline fn documentHTMLBody(doc_html: *DocumentHTML) !?*Body {
const err = documentHTMLVtable(doc_html).get_body.?(doc_html, &body);
try DOMErr(err);
if (body == null) return null;
return @as(*Body, @ptrCast(body.?));
}