tiny.chant.parse.state.start

1pub const start = @import("start.zig");

1const std = @import("std");2const chant = @import("../../root.zig");3const ast = @import("../../ast/root.zig");4const types = @import("types.zig");5const cursor = @import("cursor.zig");6const typedef = @import("typedef.zig");78const Token = chant.token.Token;9const Parser = types.Parser;1011pub fn declaration(parser: *const Parser) bool {12    return switch (cursor.peek(parser).kind) {13        .kw_void,14        .kw_char,15        .kw_short,16        .kw_int,17        .kw_long,18        .kw_float,19        .kw_double,20        .kw_decimal32,21        .kw_decimal64,22        .kw_decimal128,23        .kw_signed,24        .kw_unsigned,25        .kw_bitint,26        .kw_bool,27        .kw_const,28        .kw_volatile,29        .kw_restrict,30        .kw_static,31        .kw_extern,32        .kw_inline,33        .kw_register,34        .kw_auto,35        .kw_constexpr,36        .kw_typedef,37        .kw_alignas,38        .kw_thread_local,39        .kw_typeof,40        .kw_typeof_unqual,41        .kw_struct,42        .kw_union,43        .kw_enum,44        => true,45        .lbracket => cursor.ahead(parser, 1).kind == .lbracket,46        .identifier => typedef.isName(parser, cursor.peek(parser).text),47        else => false,48    };49}5051pub fn typename(parser: *const Parser, offset: usize) bool {52    const tok = cursor.ahead(parser, offset);53    return switch (tok.kind) {54        .kw_void,55        .kw_char,56        .kw_short,57        .kw_int,58        .kw_long,59        .kw_float,60        .kw_double,61        .kw_decimal32,62        .kw_decimal64,63        .kw_decimal128,64        .kw_signed,65        .kw_unsigned,66        .kw_bitint,67        .kw_bool,68        .kw_const,69        .kw_volatile,70        .kw_typeof,71        .kw_typeof_unqual,72        .kw_struct,73        .kw_union,74        .kw_enum,75        => true,76        .identifier => typedef.isName(parser, tok.text),77        else => false,78    };79}8081test "start detects declarations and type names" {82    var arena_state = std.heap.ArenaAllocator.init(std.testing.allocator);83    defer arena_state.deinit();84    const arena = arena_state.allocator();8586    const tokens = [_]Token{87        .{ .kind = .identifier, .text = "size_t", .file = "test.c", .line = 1, .column = 1 },88        .{ .kind = .identifier, .text = "value", .file = "test.c", .line = 1, .column = 8 },89        .{ .kind = .eof, .text = "", .file = "test.c", .line = 1, .column = 13 },90    };91    var parser = try @import("test.zig").initParser(arena, &tokens);9293    try typedef.register(&parser, "size_t", &ast.types.ulong_type);94    try std.testing.expect(declaration(&parser));95    try std.testing.expect(typename(&parser, 0));96    try std.testing.expect(!typename(&parser, 1));97}