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| 1 | +const std = @import("std"); |
| 2 | +const types = @import("types.zig"); |
| 3 | +const util = @import("util.zig"); |
| 4 | + |
| 5 | +const JsonScalar = types.JsonScalar; |
| 6 | +const dupTrimmedScalar = util.dupTrimmedScalar; |
| 7 | + |
| 8 | +pub fn parseBool(value: []const u8) !bool { |
| 9 | + const trimmed = std.mem.trim(u8, value, " \t\r"); |
| 10 | + if (std.ascii.eqlIgnoreCase(trimmed, "true")) return true; |
| 11 | + if (std.ascii.eqlIgnoreCase(trimmed, "false")) return false; |
| 12 | + return error.UnsupportedYaml; |
| 13 | +} |
| 14 | + |
| 15 | +pub fn parseJsonScalar(allocator: std.mem.Allocator, value: []const u8) !JsonScalar { |
| 16 | + const trimmed = std.mem.trim(u8, value, " \t\r"); |
| 17 | + const unquoted = try dupTrimmedScalar(allocator, trimmed); |
| 18 | + if (std.mem.eql(u8, trimmed, "true") or std.mem.eql(u8, trimmed, "false")) return .{ .text = unquoted, .kind = .bool }; |
| 19 | + if (std.mem.eql(u8, trimmed, "null")) return .{ .text = unquoted, .kind = .null }; |
| 20 | + if (isJsonNumber(trimmed)) return .{ .text = unquoted, .kind = .number }; |
| 21 | + return .{ .text = unquoted, .kind = .string }; |
| 22 | +} |
| 23 | + |
| 24 | +fn isJsonNumber(value: []const u8) bool { |
| 25 | + if (value.len == 0) return false; |
| 26 | + var i: usize = 0; |
| 27 | + if (value[i] == '-') { |
| 28 | + i += 1; |
| 29 | + if (i == value.len) return false; |
| 30 | + } |
| 31 | + if (value[i] == '0') { |
| 32 | + i += 1; |
| 33 | + if (i < value.len and std.ascii.isDigit(value[i])) return false; |
| 34 | + } else if (value[i] >= '1' and value[i] <= '9') { |
| 35 | + i += 1; |
| 36 | + while (i < value.len and std.ascii.isDigit(value[i])) : (i += 1) {} |
| 37 | + } else { |
| 38 | + return false; |
| 39 | + } |
| 40 | + if (i < value.len and value[i] == '.') { |
| 41 | + i += 1; |
| 42 | + var frac_digits: usize = 0; |
| 43 | + while (i < value.len and std.ascii.isDigit(value[i])) : (i += 1) { |
| 44 | + frac_digits += 1; |
| 45 | + } |
| 46 | + if (frac_digits == 0) return false; |
| 47 | + } |
| 48 | + if (i < value.len and (value[i] == 'e' or value[i] == 'E')) { |
| 49 | + i += 1; |
| 50 | + if (i < value.len and (value[i] == '+' or value[i] == '-')) i += 1; |
| 51 | + var exp_digits: usize = 0; |
| 52 | + while (i < value.len and std.ascii.isDigit(value[i])) : (i += 1) { |
| 53 | + exp_digits += 1; |
| 54 | + } |
| 55 | + if (exp_digits == 0) return false; |
| 56 | + } |
| 57 | + return i == value.len; |
| 58 | +} |
| 59 | + |
| 60 | +pub fn testNameFromYamlItem(allocator: std.mem.Allocator, value: []const u8) ![]const u8 { |
| 61 | + const trimmed = std.mem.trim(u8, value, " \t\r"); |
| 62 | + if (trimmed.len == 0) return error.UnsupportedYaml; |
| 63 | + const colon = std.mem.indexOfScalar(u8, trimmed, ':') orelse trimmed.len; |
| 64 | + return try dupTrimmedScalar(allocator, trimmed[0..colon]); |
| 65 | +} |
| 66 | + |
| 67 | +test "parseBool accepts YAML bool scalars case-insensitively" { |
| 68 | + try std.testing.expect(try parseBool(" true ")); |
| 69 | + try std.testing.expect(try parseBool("FALSE\r") == false); |
| 70 | + try std.testing.expectError(error.UnsupportedYaml, parseBool("yes")); |
| 71 | +} |
| 72 | + |
| 73 | +test "parseJsonScalar classifies JSON-compatible YAML scalars" { |
| 74 | + var arena = std.heap.ArenaAllocator.init(std.testing.allocator); |
| 75 | + defer arena.deinit(); |
| 76 | + const allocator = arena.allocator(); |
| 77 | + |
| 78 | + const string_scalar = try parseJsonScalar(allocator, "\"blue\""); |
| 79 | + try std.testing.expectEqual(.string, string_scalar.kind); |
| 80 | + try std.testing.expectEqualStrings("blue", string_scalar.text); |
| 81 | + |
| 82 | + const number_scalar = try parseJsonScalar(allocator, "-12.5e+3"); |
| 83 | + try std.testing.expectEqual(.number, number_scalar.kind); |
| 84 | + try std.testing.expectEqualStrings("-12.5e+3", number_scalar.text); |
| 85 | + |
| 86 | + const bool_scalar = try parseJsonScalar(allocator, "false"); |
| 87 | + try std.testing.expectEqual(.bool, bool_scalar.kind); |
| 88 | + try std.testing.expectEqualStrings("false", bool_scalar.text); |
| 89 | + |
| 90 | + const null_scalar = try parseJsonScalar(allocator, "null"); |
| 91 | + try std.testing.expectEqual(.null, null_scalar.kind); |
| 92 | + try std.testing.expectEqualStrings("null", null_scalar.text); |
| 93 | +} |
| 94 | + |
| 95 | +test "json number parser rejects invalid leading zero forms" { |
| 96 | + try std.testing.expect(isJsonNumber("0")); |
| 97 | + try std.testing.expect(isJsonNumber("-12.5e+3")); |
| 98 | + try std.testing.expect(!isJsonNumber("007")); |
| 99 | + try std.testing.expect(!isJsonNumber("-01")); |
| 100 | + try std.testing.expect(!isJsonNumber("1.")); |
| 101 | +} |
| 102 | + |
| 103 | +test "testNameFromYamlItem reads scalar and mapping test names" { |
| 104 | + var arena = std.heap.ArenaAllocator.init(std.testing.allocator); |
| 105 | + defer arena.deinit(); |
| 106 | + const allocator = arena.allocator(); |
| 107 | + |
| 108 | + try std.testing.expectEqualStrings("not_null", try testNameFromYamlItem(allocator, " not_null ")); |
| 109 | + try std.testing.expectEqualStrings("relationships", try testNameFromYamlItem(allocator, "relationships:")); |
| 110 | + try std.testing.expectEqualStrings("accepted_values", try testNameFromYamlItem(allocator, "\"accepted_values\": {values: [a, b]}")); |
| 111 | + try std.testing.expectError(error.UnsupportedYaml, testNameFromYamlItem(allocator, " ")); |
| 112 | +} |
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