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Registry: Header revision

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This commit is contained in:
Robin Voetter
2020-01-24 13:56:22 +01:00
parent 51cb124feb
commit b093f6b61e
3 changed files with 23 additions and 4 deletions
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20
generator/registry.zig
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@@ -38,7 +38,7 @@ pub const Registry = struct {
return registry;
}
fn deinit(self: *Registry) void {
fn deinit(self: Registry) void {
self.declarations_by_name.deinit();
// Copy to stack so that the arena doesn't destroy itself
@@ -467,6 +467,14 @@ const EnumInfo = struct {
if (EnumInfo.isBackwardsCompatAlias(variant)) return;
const name = variant.getAttribute("name").?;
const value = blk: {
// An enum variant's value could be defined by any of the following attributes:
// - value: Straight up value of the enum variant, in either base 10 or 16 (prefixed with 0x).
// - bitpos: Used for bitmasks, and can also be set in extensions.
// - alias: The field is an alias of another variant within the same enum.
// - offset: Used with features and extensions, where a non-bitpos value is added to an enum.
// The value is given by `1e9 + (extr_nr - 1) * 1e3 + offset`, where `ext_nr` is either
// given by the `extnumber` field (in the case of a feature), or given in the parent <extension>
// tag. In the latter case its passed via the `ext_nr` parameter.
if (variant.getAttribute("value")) |value_str| {
break :blk Value{.Value = parseInt(i32, value_str) catch unreachable};
} else if (variant.getAttribute("bitpos")) |bitpos_str| {
@@ -540,6 +548,8 @@ fn processTypes(registry: *Registry, root: *xml.Element) void {
processFuncPointerType(registry, ty);
} else if (mem.eql(u8, category, "basetype")) {
processBaseType(registry, ty);
} else if (mem.eql(u8, category, "define")) {
processDefineType(registry, ty);
}
}
}
@@ -605,6 +615,14 @@ fn processBaseType(registry: *Registry, ty: *xml.Element) void {
registry.addDefinition(name, .{.BaseType = type_info});
}
fn processDefineType(registry: *Registry, ty: *xml.Element) void {
if (ty.getCharData("name")) |name| {
if (mem.eql(u8, name, "VK_HEADER_VERSION")) {
registry.addApiConstant("VK_HEADER_VERSION", mem.trim(u8, ty.children.at(2).CharData, " "));
}
}
}
fn processEnums(registry: *Registry, root: *xml.Element) void {
var it = root.findChildrenByTag("enums");
while (it.next()) |enums| {