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Wrapper rendering first iteration

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This commit is contained in:
Robin Voetter
2020-06-28 20:02:16 +02:00
parent 7dfad114ab
commit 81cdbce53b
2 changed files with 265 additions and 98 deletions
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349
generator/render.zig
View File

@@ -19,6 +19,38 @@ const preamble =
\\ .AAPCSVFP
\\ else
\\ .C;
\\pub fn FlagsMixin(comptime FlagsType: type) type {
\\ return struct {
\\ pub const IntType = Flags;
\\ pub fn toInt(self: FlagsType) IntType {
\\ return @bitCast(IntType, self);
\\ }
\\
\\ pub fn fromInt(flags: IntType) FlagsType {
\\ return @bitCast(FlagsType, flags);
\\ }
\\
\\ pub fn merge(lhs: FlagsType, rhs: FlagsType) FlagsType {
\\ return fromInt(toInt(lhs) | toInt(rhs));
\\ }
\\
\\ pub fn intersect(lhs: FlagsType, rhs: FlagsType) FlagsType {
\\ return fromInt(toInt(lhs) & toInt(rhs));
\\ }
\\
\\ pub fn complement(self: FlagsType) FlagsType {
\\ return fromInt(~toInt(lhs));
\\ }
\\
\\ pub fn subtract(lhs: FlagsType, rhs: FlagsType) FlagsType {
\\ return fromInt(toInt(lhs) & toInt(rhs.complement()));
\\ }
\\
\\ pub fn contains(lhs: FlagsType, rhs: FlagsType) FlagsType {
\\ return toInt(merge(lhs, rhs)) == toInt(rhs);
\\ }
\\ };
\\}
\\
;
@@ -97,6 +129,15 @@ fn Renderer(comptime WriterType: type) type {
other,
};
const ReturnValue = struct {
name: []const u8,
return_value_type: reg.TypeInfo,
origin: enum {
parameter,
inner_return_value,
},
};
writer: WriterType,
allocator: *Allocator,
registry: *const reg.Registry,
@@ -116,11 +157,15 @@ fn Renderer(comptime WriterType: type) type {
}
fn writeIdentifier(self: Self, id: []const u8) !void {
try util.writeIdentifier(self.writer, id);
try self.id_renderer.render(self.writer, id);
}
fn writeIdentifierWithCase(self: *Self, case: util.CaseStyle, id: []const u8) !void {
try self.id_renderer.render(self.writer, case, id);
try self.id_renderer.renderWithCase(self.writer, case, id);
}
fn writeIdentifierFmt(self: *Self, comptime fmt: []const u8, args: var) !void {
try self.id_renderer.renderFmt(self.writer, fmt, args);
}
fn extractEnumFieldName(self: Self, enum_name: []const u8, field_name: []const u8) ![]const u8 {
@@ -165,8 +210,16 @@ fn Renderer(comptime WriterType: type) type {
return .mut_buffer_len;
}
const child_is_void = ptr.child.* == .name and mem.eql(u8, ptr.child.name, "void");
if (!child_is_void and ptr.size == .one and !ptr.is_optional) {
if (ptr.child.* == .name) {
const child_name = ptr.child.name;
if (mem.eql(u8, child_name, "void")) {
return .other;
} else if (builtin_types.get(child_name) == null and util.trimVkNamespace(child_name).ptr == child_name.ptr) {
return .other; // External type
}
}
if (ptr.size == .one and !ptr.is_optional) {
if (ptr.is_const) {
return .in_pointer;
} else {
@@ -284,7 +337,7 @@ fn Renderer(comptime WriterType: type) type {
try self.writer.writeAll(zig_name);
return;
} else if (self.extractBitflagName(name)) |bitflag_name| {
try self.writer.print("{}Flags{}", .{
try self.writeIdentifierFmt("{}Flags{}", .{
util.trimVkNamespace(bitflag_name.base_name),
@as([]const u8, if (bitflag_name.tag) |tag| tag else "")
});
@@ -314,7 +367,22 @@ fn Renderer(comptime WriterType: type) type {
for (command_ptr.params) |param| {
try self.writeIdentifierWithCase(.snake, param.name);
try self.writer.writeAll(": ");
blk: {
if (param.param_type == .name) {
if (self.extractBitflagName(param.param_type.name)) |bitflag_name| {
try self.writeIdentifierFmt("{}Flags{}", .{
util.trimVkNamespace(bitflag_name.base_name),
@as([]const u8, if (bitflag_name.tag) |tag| tag else "")
});
try self.writer.writeAll(".IntType");
break :blk;
}
}
try self.renderTypeInfo(param.param_type);
}
try self.writer.writeAll(", ");
}
try self.writer.writeAll(") callconv(vulkan_call_conv)");
@@ -434,7 +502,7 @@ fn Renderer(comptime WriterType: type) type {
continue;
}
try self.writeIdentifierWithCase(.snake, try self.extractEnumFieldName(name, field.name));
try self.renderEnumFieldName(name, field.name);
switch (field.value) {
.int => |int| try self.writer.print(" = {}, ", .{int}),
@@ -450,45 +518,13 @@ fn Renderer(comptime WriterType: type) type {
}
try self.writer.writeAll("pub const ");
try self.writeIdentifierWithCase(.snake, try self.extractEnumFieldName(name, field.name));
try self.renderEnumFieldName(name, field.name);
try self.writer.writeAll(" = ");
try self.writeIdentifierWithCase(.snake, try self.extractEnumFieldName(name, field.value.alias.name));
try self.renderEnumFieldName(name, field.value.alias.name);
try self.writer.writeAll(";");
}
try self.writer.writeAll("};\n");
if (mem.eql(u8, name, "VkResult")) {
try self.renderResultErrorSet(enumeration);
}
}
fn renderResultAsError(self: *Self, name: []const u8) !void {
const error_prefix = "VK_ERROR_";
if (!mem.startsWith(u8, name, error_prefix)) {
return error.NotErrorResult;
}
try self.writeIdentifierWithCase(.title, name[error_prefix.len ..]);
}
fn renderResultErrorSet(self: *Self, enumeration: reg.Enum) !void {
try self.writer.writeAll("pub const Error = error{\n");
const error_prefix = "VK_ERROR_";
for (enumeration.fields) |field| {
if (field.value != .int) {
continue;
}
self.renderResultAsError(field.name) catch |err| switch (err) {
error.NotErrorResult => continue,
else => |narrowed| return narrowed
};
try self.writer.writeAll(",\n");
}
try self.writer.writeAll("};\n");
}
fn renderBitmaskBits(self: *Self, name: []const u8, bits: reg.Enum) !void {
@@ -505,19 +541,20 @@ fn Renderer(comptime WriterType: type) type {
for (flags_by_bitpos) |opt_flag_name, bitpos| {
if (opt_flag_name) |flag_name| {
try self.writeIdentifierWithCase(.snake, try self.extractEnumFieldName(name, flag_name));
try self.renderEnumFieldName(name, flag_name);
} else {
try self.writer.print("__reserved_bit_{}", .{bitpos});
try self.writer.print("_reserved_bit_{}", .{bitpos});
}
try self.writer.writeAll(": bool ");
if (bitpos == 0) { // Force alignment to integer boundaries
try self.writer.writeAll("align(@alignOf(u32)) ");
try self.writer.writeAll("align(@alignOf(Flags)) ");
}
try self.writer.writeAll("= false, ");
}
try self.writer.writeAll("};\n");
try self.writer.writeAll("pub usingnamespace FlagsMixin(");
try self.renderTypeName(name);
try self.writer.writeAll(");\n};\n");
}
fn renderBitmask(self: *Self, name: []const u8, bitmask: reg.Bitmask) !void {
@@ -529,7 +566,12 @@ fn Renderer(comptime WriterType: type) type {
try self.renderTypeName(name);
try self.writer.writeAll(
\\ = packed struct {
\\__reserved_bits: u32 = 0,
\\_reserved_bits: Flags = 0,
\\pub usingnamespace FlagsMixin(
);
try self.renderTypeName(name);
try self.writer.writeAll(
\\);
\\};
\\
);
@@ -598,7 +640,9 @@ fn Renderer(comptime WriterType: type) type {
continue;
}
try self.writer.print("const PFN_{} = ", .{decl.name});
try self.writer.writeAll("const ");
try self.writeIdentifierFmt("PFN_{}", .{decl.name});
try self.writer.writeAll(" = ");
try self.renderCommandPtr(decl.decl_type.command, false);
try self.writer.writeAll(";\n");
}
@@ -643,7 +687,7 @@ fn Renderer(comptime WriterType: type) type {
try self.writer.writeAll("};}\n");
}
fn inPointerAdjustedName(name: []const u8) []const u8 {
fn derefName(name: []const u8) []const u8 {
var it = util.SegmentIterator.init(name);
return if (mem.eql(u8, it.next().?, "p"))
name[1..]
@@ -651,7 +695,7 @@ fn Renderer(comptime WriterType: type) type {
name;
}
fn renderWrapperPrototype(self: *Self, name: []const u8, command: reg.Command) !void {
fn renderWrapperPrototype(self: *Self, name: []const u8, command: reg.Command, returns: []const ReturnValue) !void {
try self.writer.writeAll("pub fn ");
try self.writeIdentifierWithCase(.camel, util.trimVkNamespace(name));
try self.writer.writeAll("(self: Self, ");
@@ -660,11 +704,11 @@ fn Renderer(comptime WriterType: type) type {
switch (try self.classifyParam(param)) {
.in_pointer => {
// Remove one pointer level
try self.writeIdentifierWithCase(.snake, inPointerAdjustedName(param.name));
try self.writeIdentifierWithCase(.snake, derefName(param.name));
try self.writer.writeAll(": ");
try self.renderTypeInfo(param.param_type.pointer.child.*);
},
.out_pointer => continue, // Return vaPlue
.out_pointer => continue, // Return value
.bitflags, // Special stuff handled in renderWrapperCall
.buffer_len,
.mut_buffer_len,
@@ -679,10 +723,23 @@ fn Renderer(comptime WriterType: type) type {
}
try self.writer.writeAll(") ");
if (command.return_type.* == .name and mem.eql(u8, command.return_type.name, "VkResult")) {
try self.renderErrorSet(command.error_codes);
try self.writer.writeByte('!');
}
fn renderWrapperCall(self: *Self, name: []const u8, command: reg.Command) !void {
try self.writer.writeAll("return self.");
if (returns.len == 1) {
try self.renderTypeInfo(returns[0].return_value_type);
} else if (returns.len > 1) {
try self.renderReturnStructName(name);
} else {
try self.writer.writeAll("void");
}
}
fn renderWrapperCall(self: *Self, name: []const u8, command: reg.Command, returns: []const ReturnValue) !void {
try self.writer.writeAll("self.");
try self.writeIdentifier(name);
try self.writer.writeAll("(");
@@ -690,11 +747,14 @@ fn Renderer(comptime WriterType: type) type {
switch (try self.classifyParam(param)) {
.in_pointer => {
try self.writer.writeByte('&');
try self.writeIdentifierWithCase(.snake, inPointerAdjustedName(param.name));
try self.writeIdentifierWithCase(.snake, derefName(param.name));
},
.out_pointer => {
try self.writer.writeByte('&');
try self.writeIdentifierWithCase(.snake, param.name);
if (returns.len > 1) {
try self.writer.writeAll("return_values.");
}
try self.writeIdentifierWithCase(.snake, derefName(param.name));
},
.bitflags => {
try self.writeIdentifierWithCase(.snake, param.name);
@@ -707,84 +767,181 @@ fn Renderer(comptime WriterType: type) type {
try self.writer.writeAll(", ");
}
try self.writer.writeAll(")");
}
fn extractReturns(self: *Self, command: reg.Command) !reg.Container {
var returns = std.ArrayList(reg.Container.Field).init(self.allocator);
fn extractReturns(self: *Self, command: reg.Command) ![]const ReturnValue {
var returns = std.ArrayList(ReturnValue).init(self.allocator);
// if (command.return_type.* == .name) {
// const return_name = command.return_type.name;
// if (!mem.eql(u8, return_name, "void") and !mem.eql(u8, command.return_type.name))
// }
if (command.return_type.* == .name) {
const return_name = command.return_type.name;
if (!mem.eql(u8, return_name, "void") and !mem.eql(u8, return_name, "VkResult")) {
try returns.append(.{
.name = "return_value",
.return_value_type = command.return_type.*,
.origin = .inner_return_value,
});
}
}
if (command.success_codes.len > 0) {
if (command.success_codes.len > 1) {
if (command.return_type.* != .name or !mem.eql(u8, command.return_type.name, "VkResult")) {
return error.InvalidRegistry;
}
try returns.append(.{
.name = "result",
.field_type = command.return_type.*,
.bits = null,
.is_buffer_len = false,
.return_value_type = command.return_type.*,
.origin = .inner_return_value,
});
} else if (command.success_codes.len == 1 and !mem.eql(u8, command.success_codes[0], "VK_SUCCESS")) {
return error.InvalidRegistry;
}
for (command.params) |param| {
if ((try self.classifyParam(param)) == .out_pointer) {
try returns.append(.{
.name = param.name,
.field_type = param.param_type,
.bits = null,
.is_buffer_len = param.is_buffer_len,
.name = derefName(param.name),
.return_value_type = param.param_type.pointer.child.*,
.origin = .parameter,
});
}
}
return reg.Container{
.fields = returns.toOwnedSlice(),
.is_union = false,
};
return returns.toOwnedSlice();
}
fn renderReturnStructName(self: *Self, command_name: []const u8) !void {
try self.writeIdentifierFmt("{}Result", .{util.trimVkNamespace(command_name)});
}
fn renderReturnStruct(self: *Self, command_name: []const u8, returns: []const ReturnValue) !void {
try self.writer.writeAll("const ");
try self.renderReturnStructName(command_name);
try self.writer.writeAll(" = struct {\n");
for (returns) |ret| {
try self.writeIdentifierWithCase(.snake, ret.name);
try self.writer.writeAll(": ");
try self.renderTypeInfo(ret.return_value_type);
try self.writer.writeAll(", ");
}
try self.writer.writeAll("};\n");
}
fn renderWrapper(self: *Self, name: []const u8, command: reg.Command) !void {
// const returns = try self.extractReturns(command);
// const return_struct_name = if (returns.fields.len > 1)
// try std.fmt.allocPrint(self.allocator, "{}Result", .{name})
// else
// null;
// defer if (return_struct_name) |rsn| self.sfa.allocator.free(rsn);
const returns_vk_result = command.return_type.* == .name
and mem.eql(u8, command.return_type.name, "VkResult");
const returns_void = command.return_type.* == .name
and mem.eql(u8, command.return_type.name, "void");
const returns = try self.extractReturns(command);
// if (self.returns.items.len > 1) {
if (returns.len > 1) {
try self.renderReturnStruct(name, returns);
}
// }
try self.renderWrapperPrototype(name, command, returns);
try self.renderWrapperPrototype(name, command);
if (returns.len == 1 and returns[0].origin == .inner_return_value) {
try self.writer.writeAll("{\n\n");
// if (command.error_codes.len != 0) {
// try self.renderErrorSet(command.error_codes);
// try self.writer.writeByte('!');
// }
if (returns_vk_result) {
try self.writer.writeAll("const result = ");
try self.renderWrapperCall(name, command, returns);
try self.writer.writeAll(";\n");
try self.renderErrorSwitch("result", command);
try self.writer.writeAll("return result;\n");
} else {
try self.writer.writeAll("return ");
try self.renderWrapperCall(name, command, returns);
try self.writer.writeAll(";\n");
}
try self.writer.writeAll("\n}\n");
return;
}
try self.renderTypeInfo(command.return_type.*);
try self.writer.writeAll("{\n");
try self.renderWrapperCall(name, command);
try self.writer.writeAll(");\n}\n");
if (returns.len == 1) {
try self.writer.writeAll("var ");
try self.writeIdentifierWithCase(.snake, returns[0].name);
try self.writer.writeAll(" = undefined;\n");
} else if (returns.len > 1) {
try self.writer.writeAll("var return_values: ");
try self.renderReturnStructName(name);
try self.writer.writeAll(" = undefined;\n");
}
if (returns_vk_result) {
try self.writer.writeAll("const result = ");
try self.renderWrapperCall(name, command, returns);
try self.writer.writeAll(";\n");
try self.renderErrorSwitch("result", command);
if (command.success_codes.len > 1) {
try self.writer.writeAll("return_values.result = result;\n");
}
} else {
if (!returns_void) {
try self.writer.writeAll("return_values.return_value = ");
}
try self.renderWrapperCall(name, command, returns);
try self.writer.writeAll(";\n");
}
if (returns.len == 1) {
try self.writer.writeAll("return ");
try self.writeIdentifierWithCase(.snake, returns[0].name);
try self.writer.writeAll(";\n");
} else if (returns.len > 1) {
try self.writer.writeAll("return return_values;\n");
}
try self.writer.writeAll("}\n");
}
fn renderErrorSwitch(self: *Self, result_var: []const u8, command: reg.Command) !void {
try self.writer.writeAll("switch (");
try self.writeIdentifier(result_var);
try self.writer.writeAll(") {\n");
for (command.success_codes) |success| {
try self.writer.writeByte('.');
try self.renderEnumFieldName("VkResult", success);
try self.writer.writeAll(" => {},");
}
for (command.error_codes) |err| {
try self.writer.writeByte('.');
try self.renderEnumFieldName("VkResult", err);
try self.writer.writeAll(" => return error.");
try self.renderResultAsErrorName(err);
try self.writer.writeAll(", ");
}
try self.writer.writeAll("else => return error.Unknown,}\n");
}
fn renderErrorSet(self: *Self, errors: []const []const u8) !void {
try self.writer.writeAll("error{");
for (errors) |name| {
self.renderResultAsError(name) catch |err| switch (err) {
// Apparently some commands return a non-error code as error code
error.NotErrorResult => continue,
else => |narrowed| return narrowed
};
try self.renderResultAsErrorName(name);
try self.writer.writeAll(", ");
}
try self.writer.writeAll("}");
try self.writer.writeAll("Unkown, }");
}
fn renderResultAsErrorName(self: *Self, name: []const u8) !void {
const error_prefix = "VK_ERROR_";
if (mem.startsWith(u8, name, error_prefix)) {
try self.writeIdentifierWithCase(.title, name[error_prefix.len ..]);
} else {
// Apparently some commands (VkAcquireProfilingLockInfoKHR) return
// success codes as error...
try self.writeIdentifierWithCase(.title, util.trimVkNamespace(name));
}
}
};
}

12
generator/render/util.zig
View File

@@ -223,7 +223,17 @@ pub const IdRenderer = struct {
}
}
pub fn render(self: *IdRenderer, out: var, case_style: CaseStyle, id: []const u8) !void {
pub fn render(self: IdRenderer, out: var, id: []const u8) !void {
try writeIdentifier(out, id);
}
pub fn renderFmt(self: *IdRenderer, out: var, comptime fmt: []const u8, args: var) !void {
self.text_cache.items.len = 0;
try std.fmt.format(self.text_cache.writer(), fmt, args);
try writeIdentifier(out, self.text_cache.items);
}
pub fn renderWithCase(self: *IdRenderer, out: var, case_style: CaseStyle, id: []const u8) !void {
const tag = getAuthorTag(id, self.tags);
const adjusted_id = if (tag) |name| id[0 .. id.len - name.len] else id;