Basic semantic tokens implementation
This commit is contained in:
Alexandros Naskos
parent
112f6d735a
commit
0592513da4
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@ -28,7 +28,7 @@ const ClientCapabilities = struct {
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var client_capabilities = ClientCapabilities{};
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const initialize_response =
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\\,"result":{"capabilities":{"signatureHelpProvider":{"triggerCharacters":["(",","]},"textDocumentSync":1,"completionProvider":{"resolveProvider":false,"triggerCharacters":[".",":","@"]},"documentHighlightProvider":false,"hoverProvider":true,"codeActionProvider":false,"declarationProvider":true,"definitionProvider":true,"typeDefinitionProvider":true,"implementationProvider":false,"referencesProvider":false,"documentSymbolProvider":true,"colorProvider":false,"documentFormattingProvider":false,"documentRangeFormattingProvider":false,"foldingRangeProvider":false,"selectionRangeProvider":false,"workspaceSymbolProvider":false,"rangeProvider":false,"documentProvider":true},"workspace":{"workspaceFolders":{"supported":true,"changeNotifications":true}},"semanticTokensProvider":{"documentProvider":true, "legend":{"tokenTypes":["type","struct","enum","union","parameter","variable","tagField","field","function","keyword","modifier","comment","string","number","operator"],"tokenModifiers":["definition","async","documentation"]}}}}
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\\,"result":{"capabilities":{"signatureHelpProvider":{"triggerCharacters":["(",","]},"textDocumentSync":1,"completionProvider":{"resolveProvider":false,"triggerCharacters":[".",":","@"]},"documentHighlightProvider":false,"hoverProvider":true,"codeActionProvider":false,"declarationProvider":true,"definitionProvider":true,"typeDefinitionProvider":true,"implementationProvider":false,"referencesProvider":false,"documentSymbolProvider":true,"colorProvider":false,"documentFormattingProvider":false,"documentRangeFormattingProvider":false,"foldingRangeProvider":false,"selectionRangeProvider":false,"workspaceSymbolProvider":false,"rangeProvider":false,"documentProvider":true},"workspace":{"workspaceFolders":{"supported":true,"changeNotifications":true}},"semanticTokensProvider":{"documentProvider":true, "legend":{"tokenTypes":["type","struct","enum","union","parameter","variable","tagField","field","function","keyword","modifier","comment","string","number","operator","builtin"],"tokenModifiers":["definition","async","documentation"]}}}}
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;
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const not_implemented_response =
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@ -957,7 +957,6 @@ fn processJsonRpc(parser: *std.json.Parser, json: []const u8, config: Config) !v
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// TODO Actually test this in some editor, VSCode won't send me requests -_-'.
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const semantic_tokens = @import("semantic_tokens.zig");
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const token_array = try semantic_tokens.writeAllSemanticTokens(allocator, handle.*);
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defer allocator.free(token_array);
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@ -2,7 +2,6 @@ const std = @import("std");
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const DocumentStore = @import("document_store.zig");
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const ast = std.zig.ast;
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// ["type","struct","enum","union","parameter","variable","tagField","field","function","keyword","modifier","comment","string","number","operator"]
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const TokenType = enum(u32) {
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type,
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@"struct",
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@ -19,6 +18,7 @@ const TokenType = enum(u32) {
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string,
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number,
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operator,
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builtin,
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};
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const TokenModifiers = packed struct {
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@ -26,12 +26,8 @@ const TokenModifiers = packed struct {
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@"async": bool = false,
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documentation: bool = false,
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pub fn toInt(value: u32) TokenModifiers {
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return @bitCast(TokenModifiers, value);
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}
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fn toInt(self: TokenModifiers) u32 {
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return @bitCast(u32, self);
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return @as(u32, @bitCast(u3, self));
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}
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fn with(lhs: TokenModifiers, rhs: TokenModifiers) TokenModifiers {
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@ -48,17 +44,7 @@ const Builder = struct {
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current_token: ?ast.TokenIndex,
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arr: std.ArrayList(u32),
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fn printToken(start_idx: usize, token: ast.TokenIndex, token_type: TokenType, token_modifiers: TokenModifiers) !void {
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const delta_loc = self.tree.tokenLocationLoc(start_idx, token_loc);
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try out_stream.print(prefix ++ "{},{},{},{},{}", .{
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// TODO Is +1 on the column here correct? I think so.
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delta_loc.line, delta_loc.column + 1,
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token_loc.end - token_loc.start, @enumToInt(token_type),
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token_modifiers.toInt(),
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});
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}
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fn create(allocator: *std.mem.Allocator, tree: *ast.Tree) Builder {
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fn init(allocator: *std.mem.Allocator, tree: *ast.Tree) Builder {
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return Builder{
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.tree = tree,
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.current_token = null,
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@ -66,25 +52,170 @@ const Builder = struct {
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};
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}
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fn add(self: *Builder, out_stream: var, token: ast.TokenIndex, token_type: TokenType, token_modifiers: TokenModifiers) !void {
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if (self.current_token) |current_token| {
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std.debug.assert(token > current_token);
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try out_stream.print(",");
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try printToken(self.tree.token_locs[current_token].end, token, token_type, token_modifiers);
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} else {
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try printToken(0, token, token_type, token_modifiers);
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}
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fn add(self: *Builder, token: ast.TokenIndex, token_type: TokenType, token_modifiers: TokenModifiers) !void {
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const start_idx = if (self.current_token) |current_token|
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self.tree.token_locs[current_token].start + 1
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else
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0;
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const token_loc = self.tree.token_locs[token];
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const delta_loc = self.tree.tokenLocationLoc(start_idx, token_loc);
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try self.arr.appendSlice(&[_]u32{
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@truncate(u32, if (self.current_token == null) delta_loc.line + 1 else delta_loc.line),
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@truncate(u32, delta_loc.column + 1),
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@truncate(u32, token_loc.end - token_loc.start),
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@enumToInt(token_type),
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token_modifiers.toInt(),
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});
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self.current_token = token;
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}
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pub fn toOwnedSlice(self: *Builder) []u32 {
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fn toOwnedSlice(self: *Builder) []u32 {
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return self.arr.toOwnedSlice();
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}
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};
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fn isAllDigit(str: []const u8) bool {
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for (str) |c| {
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if (!std.ascii.isDigit(c)) return false;
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}
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return true;
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}
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fn isTypeIdent(tree: *ast.Tree, token_idx: ast.TokenIndex) bool {
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const PrimitiveTypes = std.ComptimeStringMap(void, .{
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.{ .@"0" = "isize" }, .{ .@"0" = "usize" },
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.{ .@"0" = "c_short" }, .{ .@"0" = "c_ushort" },
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.{ .@"0" = "c_int" }, .{ .@"0" = "c_uint" },
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.{ .@"0" = "c_long" }, .{ .@"0" = "c_ulong" },
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.{ .@"0" = "c_longlong" }, .{ .@"0" = "c_ulonglong" },
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.{ .@"0" = "c_longdouble" }, .{ .@"0" = "c_void" },
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.{ .@"0" = "f16" }, .{ .@"0" = "f32" },
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.{ .@"0" = "f64" }, .{ .@"0" = "f128" },
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.{ .@"0" = "bool" }, .{ .@"0" = "void" },
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.{ .@"0" = "noreturn" }, .{ .@"0" = "type" },
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.{ .@"0" = "anyerror" }, .{ .@"0" = "comptime_int" },
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.{ .@"0" = "comptime_float" }, .{ .@"0" = "anyframe" },
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});
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const text = tree.tokenSlice(token_idx);
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if (PrimitiveTypes.has(text)) return true;
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if (text.len > 1 and (text[0] == 'u' or text[0] == 'i') and isAllDigit(text[1..]))
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return true;
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return false;
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}
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pub fn writeAllSemanticTokens(allocator: *std.mem.Allocator, handle: DocumentStore.Handle) ![]u32 {
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// TODO Actual implementation
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var builder = Builder.create(allocator, handle.tree);
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var builder = Builder.init(allocator, handle.tree);
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// TODO We only scan tokens for now, we need to actually do semantic analysis
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for (handle.tree.token_ids) |token_id, token_idx| {
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const token_type: TokenType = switch (token_id) {
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.StringLiteral, .MultilineStringLiteralLine, .CharLiteral => .string,
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.Builtin => .builtin,
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.IntegerLiteral, .FloatLiteral => .number,
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.Bang,
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.Pipe,
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.PipePipe,
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.PipeEqual,
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.Equal,
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.EqualEqual,
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.EqualAngleBracketRight,
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.BangEqual,
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.Percent,
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.PercentEqual,
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.PeriodAsterisk,
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.Caret,
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.CaretEqual,
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.Plus,
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.PlusPlus,
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.PlusEqual,
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.PlusPercent,
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.PlusPercentEqual,
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.Minus,
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.MinusEqual,
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.MinusPercent,
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.MinusPercentEqual,
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.Asterisk,
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.AsteriskEqual,
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.AsteriskAsterisk,
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.AsteriskPercent,
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.AsteriskPercentEqual,
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.Arrow,
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.Slash,
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.SlashEqual,
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.Ampersand,
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.AmpersandEqual,
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.QuestionMark,
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.AngleBracketLeft,
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.AngleBracketLeftEqual,
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.AngleBracketAngleBracketLeft,
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.AngleBracketAngleBracketLeftEqual,
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.AngleBracketRight,
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.AngleBracketRightEqual,
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.AngleBracketAngleBracketRight,
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.AngleBracketAngleBracketRightEqual,
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.Tilde,
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=> .operator,
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.LineComment, .DocComment, .ContainerDocComment => .comment,
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.Keyword_align,
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.Keyword_allowzero,
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.Keyword_and,
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.Keyword_asm,
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.Keyword_async,
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.Keyword_await,
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.Keyword_break,
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.Keyword_callconv,
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.Keyword_catch,
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.Keyword_comptime,
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.Keyword_const,
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.Keyword_continue,
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.Keyword_defer,
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.Keyword_else,
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.Keyword_enum,
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.Keyword_errdefer,
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.Keyword_error,
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.Keyword_export,
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.Keyword_extern,
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.Keyword_false,
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.Keyword_fn,
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.Keyword_for,
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.Keyword_if,
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.Keyword_inline,
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.Keyword_noalias,
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.Keyword_noinline,
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.Keyword_nosuspend,
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.Keyword_null,
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.Keyword_or,
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.Keyword_orelse,
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.Keyword_packed,
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.Keyword_anyframe,
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.Keyword_pub,
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.Keyword_resume,
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.Keyword_return,
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.Keyword_linksection,
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.Keyword_struct,
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.Keyword_suspend,
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.Keyword_switch,
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.Keyword_test,
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.Keyword_threadlocal,
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.Keyword_true,
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.Keyword_try,
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.Keyword_undefined,
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.Keyword_union,
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.Keyword_unreachable,
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.Keyword_usingnamespace,
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.Keyword_var,
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.Keyword_volatile,
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.Keyword_while,
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=> .keyword,
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.Identifier => if (isTypeIdent(handle.tree, token_idx)) .type else continue,
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else => continue,
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};
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try builder.add(token_idx, token_type, TokenModifiers{});
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}
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return builder.toOwnedSlice();
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}
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