574 lines
27 KiB
Zig
574 lines
27 KiB
Zig
const std = @import("std");
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const DocumentStore = @import("document_store.zig");
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const analysis = @import("analysis.zig");
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const ast = std.zig.ast;
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const TokenType = enum(u32) {
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type,
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@"struct",
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@"enum",
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@"union",
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parameter,
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variable,
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tagField,
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field,
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errorTag,
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function,
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keyword,
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modifier,
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comment,
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string,
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number,
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operator,
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builtin,
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label,
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};
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const TokenModifiers = packed struct {
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definition: bool = false,
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@"async": bool = false,
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documentation: bool = false,
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generic: bool = false,
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fn toInt(self: TokenModifiers) u32 {
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return @as(u32, @bitCast(u4, self));
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}
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inline fn set(self: *TokenModifiers, comptime field: []const u8) void {
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@field(self, field) = true;
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}
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};
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const Builder = struct {
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handle: *DocumentStore.Handle,
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current_token: ?ast.TokenIndex,
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arr: std.ArrayList(u32),
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fn init(allocator: *std.mem.Allocator, handle: *DocumentStore.Handle) Builder {
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return Builder{
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.handle = handle,
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.current_token = null,
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.arr = std.ArrayList(u32).init(allocator),
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};
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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.handle.tree.token_locs[current_token].start
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else
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0;
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const token_loc = self.handle.tree.token_locs[token];
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const delta_loc = self.handle.tree.tokenLocationLoc(start_idx, token_loc);
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try self.arr.appendSlice(&[_]u32{
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@truncate(u32, delta_loc.line),
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@truncate(u32, delta_loc.column),
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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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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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inline fn writeToken(builder: *Builder, token_idx: ?ast.TokenIndex, tok_type: TokenType) !void {
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return try writeTokenMod(builder, token_idx, tok_type, .{});
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}
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inline fn writeTokenMod(builder: *Builder, token_idx: ?ast.TokenIndex, tok_type: TokenType, tok_mod: TokenModifiers) !void {
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if (token_idx) |ti| {
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try builder.add(ti, tok_type, tok_mod);
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}
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}
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fn writeDocComments(builder: *Builder, tree: *ast.Tree, doc: *ast.Node.DocComment) !void {
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var tok_idx = doc.first_line;
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while (tree.token_ids[tok_idx] == .DocComment or
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tree.token_ids[tok_idx] == .ContainerDocComment or
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tree.token_ids[tok_idx] == .LineComment) : (tok_idx += 1)
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{
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var tok_mod = TokenModifiers{};
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if (tree.token_ids[tok_idx] == .DocComment or tree.token_ids[tok_idx] == .ContainerDocComment)
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tok_mod.set("documentation");
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try builder.add(tok_idx, .comment, tok_mod);
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}
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}
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fn writeTokenResolveType(builder: *Builder, arena: *std.heap.ArenaAllocator, store: *DocumentStore, type_node: *ast.Node, tok: ast.TokenIndex, tok_mod: TokenModifiers) !void {
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// Resolve the type of the declaration
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if (try analysis.resolveTypeOfNode(store, arena, .{ .node = type_node, .handle = builder.handle })) |decl_type| {
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if (decl_type.type.is_type_val) {
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const tok_type = if (decl_type.isStructType())
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.@"struct"
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else if (decl_type.isEnumType())
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.@"enum"
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else if (decl_type.isUnionType())
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.@"union"
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else
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TokenType.type;
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try writeTokenMod(builder, tok, tok_type, tok_mod);
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}
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}
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}
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fn fieldTokenType(container_decl: *ast.Node.ContainerDecl, handle: *DocumentStore.Handle) ?TokenType {
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return @as(?TokenType, switch (handle.tree.token_ids[container_decl.kind_token]) {
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.Keyword_struct => .field,
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.Keyword_union, .Keyword_enum => .tagField,
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else => null,
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});
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}
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fn writeNodeTokens(builder: *Builder, arena: *std.heap.ArenaAllocator, store: *DocumentStore, maybe_node: ?*ast.Node) error{OutOfMemory}!void {
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if (maybe_node == null) return;
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const node = maybe_node.?;
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const handle = builder.handle;
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switch (node.id) {
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.Root, .Block => {
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if (node.cast(ast.Node.Block)) |block_node| {
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try writeToken(builder, block_node.label, .label);
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}
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var previous_end = if (node.id == .Root) 0 else node.firstToken();
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var child_idx: usize = 0;
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while (node.iterate(child_idx)) |child| : (child_idx += 1) {
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var i = previous_end;
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while (i < child.firstToken()) : (i += 1) {
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if (handle.tree.token_ids[i] == .LineComment) {
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try writeToken(builder, i, .comment);
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}
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}
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try writeNodeTokens(builder, arena, store, child);
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previous_end = child.lastToken();
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}
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},
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.VarDecl => {
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const var_decl = node.cast(ast.Node.VarDecl).?;
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if (var_decl.doc_comments) |doc| try writeDocComments(builder, handle.tree, doc);
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try writeToken(builder, var_decl.visib_token, .keyword);
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try writeToken(builder, var_decl.extern_export_token, .keyword);
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try writeToken(builder, var_decl.thread_local_token, .keyword);
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try writeToken(builder, var_decl.comptime_token, .keyword);
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try writeToken(builder, var_decl.mut_token, .keyword);
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try writeTokenResolveType(builder, arena, store, node, var_decl.name_token, .{ .definition = true });
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try writeNodeTokens(builder, arena, store, var_decl.type_node);
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try writeNodeTokens(builder, arena, store, var_decl.align_node);
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try writeNodeTokens(builder, arena, store, var_decl.section_node);
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try writeToken(builder, var_decl.eq_token, .operator);
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try writeNodeTokens(builder, arena, store, var_decl.init_node);
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},
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.Use => {
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const use = node.cast(ast.Node.Use).?;
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if (use.doc_comments) |docs| try writeDocComments(builder, builder.handle.tree, docs);
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try writeToken(builder, use.visib_token, .keyword);
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try writeToken(builder, use.use_token, .keyword);
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try writeNodeTokens(builder, arena, store, use.expr);
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},
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.ErrorSetDecl => {
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const error_set = node.cast(ast.Node.ErrorSetDecl).?;
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try writeToken(builder, error_set.error_token, .keyword);
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for (error_set.declsConst()) |decl| try writeNodeTokens(builder, arena, store, decl);
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},
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.ContainerDecl => {
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const container_decl = node.cast(ast.Node.ContainerDecl).?;
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try writeToken(builder, container_decl.layout_token, .keyword);
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try writeToken(builder, container_decl.kind_token, .keyword);
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switch (container_decl.init_arg_expr) {
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.None => {},
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.Enum => |enum_expr| if (enum_expr) |expr|
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try writeNodeTokens(builder, arena, store, expr)
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else
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try writeToken(builder, container_decl.kind_token + 2, .keyword),
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.Type => |type_node| try writeNodeTokens(builder, arena, store, type_node),
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}
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const field_token_type = fieldTokenType(container_decl, handle);
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var previous_end = container_decl.firstToken();
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for (container_decl.fieldsAndDeclsConst()) |child| {
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var i = previous_end;
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while (i < child.firstToken()) : (i += 1) {
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if (handle.tree.token_ids[i] == .LineComment) {
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try writeToken(builder, i, .comment);
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}
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}
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previous_end = child.lastToken();
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if (child.cast(ast.Node.ContainerField)) |container_field| {
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if (container_field.doc_comments) |docs| try writeDocComments(builder, handle.tree, docs);
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try writeToken(builder, container_field.comptime_token, .keyword);
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if (field_token_type) |tok_type| try writeToken(builder, container_field.name_token, tok_type);
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try writeNodeTokens(builder, arena, store, container_field.align_expr);
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try writeNodeTokens(builder, arena, store, container_field.type_expr);
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if (container_field.value_expr) |value_expr| {
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const eq_tok: ast.TokenIndex = if (container_field.type_expr) |type_expr|
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type_expr.lastToken() + 1
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else if (container_field.align_expr) |align_expr|
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align_expr.lastToken() + 1
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else
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unreachable; // Check this, I believe it is correct.
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try writeToken(builder, eq_tok, .operator);
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try writeNodeTokens(builder, arena, store, value_expr);
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}
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} else {
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try writeNodeTokens(builder, arena, store, child);
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}
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}
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},
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.ErrorTag => {
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const error_tag = node.cast(ast.Node.ErrorTag).?;
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if (error_tag.doc_comments) |docs| try writeDocComments(builder, handle.tree, docs);
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try writeToken(builder, error_tag.firstToken(), .errorTag);
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},
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.Identifier => {
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if (analysis.isTypeIdent(handle.tree, node.firstToken())) {
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return try writeToken(builder, node.firstToken(), .type);
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}
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if (try analysis.lookupSymbolGlobal(store, arena, handle, handle.tree.getNodeSource(node), handle.tree.token_locs[node.firstToken()].start)) |child| {
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if (child.decl.* == .param_decl) {
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return try writeToken(builder, node.firstToken(), .parameter);
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}
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// TODO: Clean this up.
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var bound_type_params = analysis.BoundTypeParams.init(&arena.allocator);
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if (try child.resolveType(store, arena, &bound_type_params)) |decl_type| {
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if (decl_type.type.is_type_val) {
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const tok_type = if (decl_type.isStructType())
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.@"struct"
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else if (decl_type.isEnumType())
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.@"enum"
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else if (decl_type.isUnionType())
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.@"union"
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else
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TokenType.type;
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return try writeTokenMod(builder, node.firstToken(), tok_type, .{});
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}
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}
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}
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},
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.FnProto => {
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const fn_proto = node.cast(ast.Node.FnProto).?;
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if (fn_proto.doc_comments) |docs| try writeDocComments(builder, handle.tree, docs);
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try writeToken(builder, fn_proto.visib_token, .keyword);
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try writeToken(builder, fn_proto.extern_export_inline_token, .keyword);
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try writeNodeTokens(builder, arena, store, fn_proto.lib_name);
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try writeToken(builder, fn_proto.fn_token, .keyword);
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const func_name_tok_type: TokenType = if (analysis.isTypeFunction(handle.tree, fn_proto))
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.type
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else
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.function;
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try writeToken(builder, fn_proto.name_token, func_name_tok_type);
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for (fn_proto.paramsConst()) |param_decl| {
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if (param_decl.doc_comments) |docs| try writeDocComments(builder, handle.tree, docs);
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try writeToken(builder, param_decl.noalias_token, .keyword);
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try writeToken(builder, param_decl.comptime_token, .keyword);
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try writeTokenMod(builder, param_decl.name_token, .parameter, .{ .definition = true });
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switch (param_decl.param_type) {
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.var_type => |var_node| try writeToken(builder, var_node.firstToken(), .type),
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.var_args => |var_args_tok| try writeToken(builder, var_args_tok, .operator),
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.type_expr => |type_expr| try writeNodeTokens(builder, arena, store, type_expr),
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}
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}
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try writeNodeTokens(builder, arena, store, fn_proto.align_expr);
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try writeNodeTokens(builder, arena, store, fn_proto.section_expr);
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try writeNodeTokens(builder, arena, store, fn_proto.callconv_expr);
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switch (fn_proto.return_type) {
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.Explicit => |type_expr| try writeNodeTokens(builder, arena, store, type_expr),
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.InferErrorSet => |type_expr| {
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try writeToken(builder, type_expr.firstToken() - 1, .operator);
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try writeNodeTokens(builder, arena, store, type_expr);
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},
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.Invalid => {},
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}
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try writeNodeTokens(builder, arena, store, fn_proto.body_node);
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},
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.AnyFrameType => {
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const any_frame_type = node.cast(ast.Node.AnyFrameType).?;
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try writeToken(builder, any_frame_type.anyframe_token, .type);
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if (any_frame_type.result) |result| {
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try writeToken(builder, result.arrow_token, .type);
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try writeNodeTokens(builder, arena, store, result.return_type);
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}
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},
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.Defer => {
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const defer_node = node.cast(ast.Node.Defer).?;
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try writeToken(builder, defer_node.defer_token, .keyword);
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try writeNodeTokens(builder, arena, store, defer_node.payload);
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try writeNodeTokens(builder, arena, store, defer_node.expr);
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},
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.Comptime => {
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const comptime_node = node.cast(ast.Node.Comptime).?;
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if (comptime_node.doc_comments) |docs| try writeDocComments(builder, handle.tree, docs);
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try writeToken(builder, comptime_node.comptime_token, .keyword);
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try writeNodeTokens(builder, arena, store, comptime_node.expr);
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},
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.Nosuspend => {
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const nosuspend_node = node.cast(ast.Node.Nosuspend).?;
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try writeToken(builder, nosuspend_node.nosuspend_token, .keyword);
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try writeNodeTokens(builder, arena, store, nosuspend_node.expr);
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},
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.Payload => {
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const payload = node.cast(ast.Node.Payload).?;
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try writeToken(builder, payload.lpipe, .operator);
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try writeToken(builder, payload.rpipe, .operator);
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},
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.PointerPayload => {
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const payload = node.cast(ast.Node.PointerPayload).?;
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try writeToken(builder, payload.lpipe, .operator);
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try writeToken(builder, payload.ptr_token, .operator);
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try writeToken(builder, payload.rpipe, .operator);
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},
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.PointerIndexPayload => {
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const payload = node.cast(ast.Node.PointerIndexPayload).?;
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try writeToken(builder, payload.lpipe, .operator);
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try writeToken(builder, payload.ptr_token, .operator);
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try writeToken(builder, payload.rpipe, .operator);
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},
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.Else => {
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const else_node = node.cast(ast.Node.Else).?;
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try writeToken(builder, else_node.else_token, .keyword);
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try writeNodeTokens(builder, arena, store, else_node.payload);
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try writeNodeTokens(builder, arena, store, else_node.body);
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},
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.Switch => {
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const switch_node = node.cast(ast.Node.Switch).?;
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try writeToken(builder, switch_node.switch_token, .keyword);
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try writeNodeTokens(builder, arena, store, switch_node.expr);
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var previous_end = switch_node.firstToken();
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for (switch_node.casesConst()) |case_node| {
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var i = previous_end;
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while (i < case_node.firstToken()) : (i += 1) {
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if (handle.tree.token_ids[i] == .LineComment) {
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try writeToken(builder, i, .comment);
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}
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}
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previous_end = case_node.lastToken();
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try writeNodeTokens(builder, arena, store, case_node);
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}
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},
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.SwitchCase => {
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const switch_case = node.cast(ast.Node.SwitchCase).?;
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for (switch_case.itemsConst()) |item_node| try writeNodeTokens(builder, arena, store, item_node);
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try writeToken(builder, switch_case.arrow_token, .operator);
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try writeNodeTokens(builder, arena, store, switch_case.payload);
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try writeNodeTokens(builder, arena, store, switch_case.expr);
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},
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.SwitchElse => {
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const switch_else = node.cast(ast.Node.SwitchElse).?;
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try writeToken(builder, switch_else.token, .keyword);
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},
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.While => {
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const while_node = node.cast(ast.Node.While).?;
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try writeToken(builder, while_node.label, .label);
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try writeToken(builder, while_node.inline_token, .keyword);
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try writeToken(builder, while_node.while_token, .keyword);
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try writeNodeTokens(builder, arena, store, while_node.condition);
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try writeNodeTokens(builder, arena, store, while_node.payload);
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try writeNodeTokens(builder, arena, store, while_node.continue_expr);
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try writeNodeTokens(builder, arena, store, while_node.body);
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if (while_node.@"else") |else_node| try writeNodeTokens(builder, arena, store, &else_node.base);
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},
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.For => {
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const for_node = node.cast(ast.Node.For).?;
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try writeToken(builder, for_node.label, .label);
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try writeToken(builder, for_node.inline_token, .keyword);
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try writeToken(builder, for_node.for_token, .keyword);
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try writeNodeTokens(builder, arena, store, for_node.array_expr);
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try writeNodeTokens(builder, arena, store, for_node.payload);
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try writeNodeTokens(builder, arena, store, for_node.body);
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if (for_node.@"else") |else_node| try writeNodeTokens(builder, arena, store, &else_node.base);
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},
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.If => {
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const if_node = node.cast(ast.Node.If).?;
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try writeToken(builder, if_node.if_token, .keyword);
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try writeNodeTokens(builder, arena, store, if_node.condition);
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try writeNodeTokens(builder, arena, store, if_node.payload);
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try writeNodeTokens(builder, arena, store, if_node.body);
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if (if_node.@"else") |else_node| try writeNodeTokens(builder, arena, store, &else_node.base);
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},
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.InfixOp => {
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const infix_op = node.cast(ast.Node.InfixOp).?;
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// @TODO This crashes the server....
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std.debug.warn("INFIX OP: {}\n", .{infix_op.op});
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// @TODO Im blowing up my stack!
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// try writeNodeTokens(builder, arena, store, infix_op.lhs);
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if (infix_op.op != .Period and infix_op.op != .Catch) {
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const token_type: TokenType = switch (infix_op.op) {
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.BoolAnd, .BoolOr => .keyword,
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else => .operator,
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};
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try writeToken(builder, infix_op.op_token, token_type);
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try writeNodeTokens(builder, arena, store, infix_op.rhs);
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}
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if (infix_op.op == .Period) {
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// @TODO Special case for dot access.
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const rhs_str = handle.tree.tokenSlice(infix_op.rhs.firstToken());
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}
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},
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.PrefixOp => {
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const prefix_op = node.cast(ast.Node.PrefixOp).?;
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// TODO Arrays
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const tok_type: TokenType = switch (prefix_op.op) {
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|
.Try, .Await, .Resume => .keyword,
|
|
else => .operator,
|
|
};
|
|
|
|
try writeToken(builder, prefix_op.op_token, tok_type);
|
|
try writeNodeTokens(builder, arena, store, prefix_op.rhs);
|
|
},
|
|
.ArrayInitializer => {
|
|
const array_initializer = node.cast(ast.Node.ArrayInitializer).?;
|
|
try writeNodeTokens(builder, arena, store, array_initializer.lhs);
|
|
for (array_initializer.listConst()) |elem| try writeNodeTokens(builder, arena, store, elem);
|
|
},
|
|
.ArrayInitializerDot => {
|
|
const array_initializer = node.cast(ast.Node.ArrayInitializerDot).?;
|
|
for (array_initializer.listConst()) |elem| try writeNodeTokens(builder, arena, store, elem);
|
|
},
|
|
.StructInitializer => {
|
|
const struct_initializer = node.cast(ast.Node.StructInitializer).?;
|
|
try writeNodeTokens(builder, arena, store, struct_initializer.lhs);
|
|
const field_token_type = if (try analysis.resolveTypeOfNode(store, arena, .{ .node = struct_initializer.lhs, .handle = handle })) |struct_type| switch (struct_type.type.data) {
|
|
.other => |type_node| if (type_node.cast(ast.Node.ContainerDecl)) |container_decl|
|
|
fieldTokenType(container_decl, handle)
|
|
else
|
|
null,
|
|
else => null,
|
|
} else null;
|
|
|
|
for (struct_initializer.listConst()) |field_init_node| {
|
|
std.debug.assert(field_init_node.id == .FieldInitializer);
|
|
const field_init = field_init_node.cast(ast.Node.FieldInitializer).?;
|
|
if (field_token_type) |tok_type| {
|
|
try writeToken(builder, field_init.period_token, tok_type);
|
|
try writeToken(builder, field_init.name_token, tok_type);
|
|
}
|
|
try writeToken(builder, field_init.name_token + 1, .operator);
|
|
try writeNodeTokens(builder, arena, store, field_init.expr);
|
|
}
|
|
},
|
|
.StructInitializerDot => {
|
|
const struct_initializer = node.cast(ast.Node.StructInitializerDot).?;
|
|
for (struct_initializer.listConst()) |field_init_node| {
|
|
std.debug.assert(field_init_node.id == .FieldInitializer);
|
|
const field_init = field_init_node.cast(ast.Node.FieldInitializer).?;
|
|
try writeToken(builder, field_init.name_token + 1, .operator);
|
|
try writeNodeTokens(builder, arena, store, field_init.expr);
|
|
}
|
|
},
|
|
.Call => {
|
|
const call = node.cast(ast.Node.Call).?;
|
|
try writeToken(builder, call.async_token, .keyword);
|
|
try writeNodeTokens(builder, arena, store, call.lhs);
|
|
for (call.paramsConst()) |param| try writeNodeTokens(builder, arena, store, param);
|
|
},
|
|
.SuffixOp => {
|
|
const suffix_op = node.cast(ast.Node.SuffixOp).?;
|
|
// @TODO We blow up the stack here as well T_T
|
|
switch (suffix_op.op) {
|
|
// .ArrayAccess => |n| try writeNodeTokens(builder, arena, store, n),
|
|
// .Slice => |s| {
|
|
// try writeNodeTokens(builder, arena, store, s.start);
|
|
// try writeToken(builder, s.start.lastToken() + 1, .operator);
|
|
// try writeNodeTokens(builder, arena, store, s.end);
|
|
// try writeNodeTokens(builder, arena, store, s.sentinel);
|
|
// },
|
|
else => try writeToken(builder, suffix_op.rtoken, .operator),
|
|
}
|
|
},
|
|
.GroupedExpression => {
|
|
const grouped_expr = node.cast(ast.Node.GroupedExpression).?;
|
|
try writeNodeTokens(builder, arena, store, grouped_expr.expr);
|
|
},
|
|
.ControlFlowExpression => {
|
|
const cfe = node.cast(ast.Node.ControlFlowExpression).?;
|
|
try writeToken(builder, cfe.ltoken, .keyword);
|
|
switch (cfe.kind) {
|
|
.Break => |label| if (label) |n| try writeToken(builder, n.firstToken(), .label),
|
|
.Continue => |label| if (label) |n| try writeToken(builder, n.firstToken(), .label),
|
|
else => {},
|
|
}
|
|
try writeNodeTokens(builder, arena, store, cfe.rhs);
|
|
},
|
|
.Suspend => {
|
|
const suspend_node = node.cast(ast.Node.Suspend).?;
|
|
try writeToken(builder, suspend_node.suspend_token, .keyword);
|
|
try writeNodeTokens(builder, arena, store, suspend_node.body);
|
|
},
|
|
.IntegerLiteral => {
|
|
try writeToken(builder, node.firstToken(), .number);
|
|
},
|
|
.EnumLiteral => {
|
|
const enum_literal = node.cast(ast.Node.EnumLiteral).?;
|
|
try writeToken(builder, enum_literal.dot, .tagField);
|
|
try writeToken(builder, enum_literal.name, .tagField);
|
|
},
|
|
.FloatLiteral => {
|
|
try writeToken(builder, node.firstToken(), .number);
|
|
},
|
|
.BuiltinCall => {
|
|
const builtin_call = node.cast(ast.Node.BuiltinCall).?;
|
|
try writeToken(builder, builtin_call.builtin_token, .builtin);
|
|
for (builtin_call.paramsConst()) |param| try writeNodeTokens(builder, arena, store, param);
|
|
},
|
|
.StringLiteral, .CharLiteral => {
|
|
try writeToken(builder, node.firstToken(), .string);
|
|
},
|
|
.MultilineStringLiteral => {
|
|
const multi_line = node.cast(ast.Node.MultilineStringLiteral).?;
|
|
for (multi_line.linesConst()) |line| try writeToken(builder, line, .string);
|
|
},
|
|
.BoolLiteral, .NullLiteral, .UndefinedLiteral, .Unreachable, .ErrorType => {
|
|
try writeToken(builder, node.firstToken(), .keyword);
|
|
},
|
|
.Asm => {
|
|
const asm_expr = node.cast(ast.Node.Asm).?;
|
|
try writeToken(builder, asm_expr.asm_token, .keyword);
|
|
try writeToken(builder, asm_expr.volatile_token, .keyword);
|
|
try writeNodeTokens(builder, arena, store, asm_expr.template);
|
|
// @TODO Inputs, outputs.
|
|
},
|
|
.VarType => {
|
|
try writeToken(builder, node.firstToken(), .type);
|
|
},
|
|
.TestDecl => {
|
|
const test_decl = node.cast(ast.Node.TestDecl).?;
|
|
if (test_decl.doc_comments) |doc| try writeDocComments(builder, handle.tree, doc);
|
|
try writeToken(builder, test_decl.test_token, .keyword);
|
|
try writeNodeTokens(builder, arena, store, test_decl.name);
|
|
try writeNodeTokens(builder, arena, store, test_decl.body_node);
|
|
},
|
|
// TODO Remove this when we handle all nodes.
|
|
else => {},
|
|
}
|
|
|
|
// TODO Handle in the Container initialization itself to highlight with the correct type FieldInitializer
|
|
|
|
// TODO While editing, the current AST node will be invalid and thus will not exist in the tree at all.
|
|
// Scan over the tokens we are not covering at all and color the keywords etc.
|
|
}
|
|
|
|
// TODO Range version, edit version.
|
|
pub fn writeAllSemanticTokens(allocator: *std.mem.Allocator, store: *DocumentStore, handle: *DocumentStore.Handle) ![]u32 {
|
|
var arena = std.heap.ArenaAllocator.init(allocator);
|
|
defer arena.deinit();
|
|
|
|
var builder = Builder.init(allocator, handle);
|
|
try writeNodeTokens(&builder, &arena, store, &handle.tree.root_node.base);
|
|
return builder.toOwnedSlice();
|
|
}
|