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API Version parsing & rendering

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This commit is contained in:
Robin Voetter
2020-06-30 16:48:58 +02:00
parent 9bda7d3357
commit c6054d2665
6 changed files with 174 additions and 57 deletions
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79
generator/render.zig
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@@ -25,32 +25,38 @@ const preamble =
\\ 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);
\\ }
\\ };
\\}
\\pub fn makeVersion(major: u10, minor: u10, patch: u12) u32 {
\\ return (@as(u32, major) << 22) | (@as(u32, minor) << 12) | patch;
\\}
\\pub fn versionMajor(version: u32) u10 {
\\ return @truncate(u10, version >> 22);
\\}
\\pub fn versionMinor(version: u32) u10 {
\\ return @truncate(u10, version >> 12);
\\}
\\pub fn versionPatch(version: u32) u12 {
\\ return @truncate(u12, version);
\\}
\\
;
@@ -260,16 +266,27 @@ fn Renderer(comptime WriterType: type) type {
fn renderApiConstant(self: *Self, api_constant: reg.ApiConstant) !void {
try self.writer.writeAll("const ");
try self.writeIdentifier(util.trimVkNamespace(api_constant.name));
try self.renderName(api_constant.name);
try self.writer.writeAll(" = ");
if (api_constant.value == .alias) {
try self.writeIdentifier(util.trimVkNamespace(api_constant.value.alias));
try self.writer.writeAll(";\n");
return;
switch (api_constant.value) {
.expr => |expr| try self.renderApiConstantExpr(expr),
.version => |version| {
try self.writer.writeAll("makeVersion(");
for (version) |part, i| {
if (i != 0) {
try self.writer.writeAll(", ");
}
try self.renderApiConstantExpr(part);
}
try self.writer.writeAll(")");
},
}
const expr = api_constant.value.expr;
try self.writer.writeAll(";\n");
}
fn renderApiConstantExpr(self: *Self, expr: []const u8) !void {
const adjusted_expr = if (expr.len > 2 and expr[0] == '(' and expr[expr.len - 1] == ')')
expr[1 .. expr.len - 1]
else
@@ -287,7 +304,7 @@ fn Renderer(comptime WriterType: type) type {
continue;
},
.id => {
try self.writeIdentifier(util.trimVkNamespace(api_constant.value.alias));
try self.renderName(tok.text);
continue;
},
.int => {},
@@ -324,20 +341,18 @@ fn Renderer(comptime WriterType: type) type {
},
}
}
try self.writer.writeAll(";\n");
}
fn renderTypeInfo(self: *Self, type_info: reg.TypeInfo) RenderTypeInfoError!void {
switch (type_info) {
.name => |name| try self.renderTypeName(name),
.name => |name| try self.renderName(name),
.command_ptr => |command_ptr| try self.renderCommandPtr(command_ptr, true),
.pointer => |pointer| try self.renderPointer(pointer),
.array => |array| try self.renderArray(array),
}
}
fn renderTypeName(self: *Self, name: []const u8) !void {
fn renderName(self: *Self, name: []const u8) !void {
if (builtin_types.get(name)) |zig_name| {
try self.writer.writeAll(zig_name);
return;
@@ -359,6 +374,10 @@ fn Renderer(comptime WriterType: type) type {
// Function pointer type, render using same name for now
try self.writeIdentifier(name);
return;
} else if (mem.startsWith(u8, name, "VK_")) {
// Constants
try self.writeIdentifier(name[3..]);
return;
}
try self.writeIdentifier(name);
@@ -423,7 +442,7 @@ fn Renderer(comptime WriterType: type) type {
try self.writer.writeByte('[');
switch (array.size) {
.int => |size| try self.writer.print("{}", .{size}),
.alias => |alias| try self.writeIdentifier(util.trimVkNamespace(alias)),
.alias => |alias| try self.renderName(alias),
}
try self.writer.writeByte(']');
try self.renderTypeInfo(array.child.*);
@@ -445,7 +464,7 @@ fn Renderer(comptime WriterType: type) type {
fn renderContainer(self: *Self, name: []const u8, container: reg.Container) !void {
try self.writer.writeAll("const ");
try self.renderTypeName(name);
try self.renderName(name);
try self.writer.writeAll(" = ");
for (container.fields) |field| {
@@ -503,7 +522,7 @@ fn Renderer(comptime WriterType: type) type {
}
try self.writer.writeAll("const ");
try self.renderTypeName(name);
try self.renderName(name);
try self.writer.writeAll(" = extern enum {");
for (enumeration.fields) |field| {
@@ -538,7 +557,7 @@ fn Renderer(comptime WriterType: type) type {
fn renderBitmaskBits(self: *Self, name: []const u8, bits: reg.Enum) !void {
try self.writer.writeAll("const ");
try self.renderTypeName(name);
try self.renderName(name);
try self.writer.writeAll(" = packed struct {");
if (bits.fields.len == 0) {
@@ -566,7 +585,7 @@ fn Renderer(comptime WriterType: type) type {
}
}
try self.writer.writeAll("pub usingnamespace FlagsMixin(");
try self.renderTypeName(name);
try self.renderName(name);
try self.writer.writeAll(");\n};\n");
}
@@ -576,13 +595,13 @@ fn Renderer(comptime WriterType: type) type {
// output flags with no associated bits type.
try self.writer.writeAll("const ");
try self.renderTypeName(name);
try self.renderName(name);
try self.writer.writeAll(
\\ = packed struct {
\\_reserved_bits: Flags = 0,
\\pub usingnamespace FlagsMixin(
);
try self.renderTypeName(name);
try self.renderName(name);
try self.writer.writeAll(
\\);
\\};
@@ -595,7 +614,7 @@ fn Renderer(comptime WriterType: type) type {
const backing_type: []const u8 = if (handle.is_dispatchable) "usize" else "u64";
try self.writer.writeAll("const ");
try self.renderTypeName(name);
try self.renderName(name);
try self.writer.print(" = extern enum({}) {{null_handle = 0, _}};\n", .{backing_type});
}
@@ -608,15 +627,15 @@ fn Renderer(comptime WriterType: type) type {
}
try self.writer.writeAll("const ");
try self.renderTypeName(name);
try self.renderName(name);
try self.writer.writeAll(" = ");
try self.renderTypeName(alias.name);
try self.renderName(alias.name);
try self.writer.writeAll(";\n");
}
fn renderOpaque(self: *Self, name: []const u8) !void {
try self.writer.writeAll("const ");
try self.renderTypeName(name);
try self.renderName(name);
try self.writer.writeAll(" = @Type(.Opaque);\n");
}
@@ -641,7 +660,7 @@ fn Renderer(comptime WriterType: type) type {
fn renderTypedef(self: *Self, name: []const u8, type_info: reg.TypeInfo) !void {
try self.writer.writeAll("const ");
try self.renderTypeName(name);
try self.renderName(name);
try self.writer.writeAll(" = ");
try self.renderTypeInfo(type_info);
try self.writer.writeAll(";\n");
@@ -875,6 +894,8 @@ fn Renderer(comptime WriterType: type) type {
if (returns.len == 1) {
try self.writer.writeAll("var ");
try self.writeIdentifierWithCase(.snake, returns[0].name);
try self.writer.writeAll(": ");
try self.renderTypeInfo(returns[0].return_value_type);
try self.writer.writeAll(" = undefined;\n");
} else if (returns.len > 1) {
try self.writer.writeAll("var return_values: ");