tru 0.2.3

TOON reference implementation in Rust (JSON <-> TOON)
Documentation 
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{
  "version": "1.4",
  "category": "decode",
  "description": "Strict mode indentation validation - non-multiple indentation, tab characters, custom indent sizes",
  "tests": [
    {
      "name": "throws on object field with non-multiple indentation (3 spaces with indent=2)",
      "input": "a:\n   b: 1",
      "expected": null,
      "shouldError": true,
      "options": {
        "indent": 2,
        "strict": true
      },
      "specSection": "14.3"
    },
    {
      "name": "throws on list item with non-multiple indentation (3 spaces with indent=2)",
      "input": "items[2]:\n   - id: 1\n   - id: 2",
      "expected": null,
      "shouldError": true,
      "options": {
        "indent": 2,
        "strict": true
      },
      "specSection": "14.3"
    },
    {
      "name": "throws on non-multiple indentation with custom indent=4 (3 spaces)",
      "input": "a:\n   b: 1",
      "expected": null,
      "shouldError": true,
      "options": {
        "indent": 4,
        "strict": true
      },
      "specSection": "14.3"
    },
    {
      "name": "accepts correct indentation with custom indent size (4 spaces with indent=4)",
      "input": "a:\n    b: 1",
      "expected": {
        "a": {
          "b": 1
        }
      },
      "options": {
        "indent": 4,
        "strict": true
      },
      "specSection": "12"
    },
    {
      "name": "throws on tab character used in indentation",
      "input": "a:\n\tb: 1",
      "expected": null,
      "shouldError": true,
      "options": {
        "strict": true
      },
      "specSection": "14.3"
    },
    {
      "name": "throws on mixed tabs and spaces in indentation",
      "input": "a:\n \tb: 1",
      "expected": null,
      "shouldError": true,
      "options": {
        "strict": true
      },
      "specSection": "14.3"
    },
    {
      "name": "throws on tab at start of line",
      "input": "\ta: 1",
      "expected": null,
      "shouldError": true,
      "options": {
        "strict": true
      },
      "specSection": "14.3"
    },
    {
      "name": "accepts tabs in quoted string values",
      "input": "text: \"hello\tworld\"",
      "expected": {
        "text": "hello\tworld"
      },
      "options": {
        "strict": true
      },
      "specSection": "12"
    },
    {
      "name": "accepts tabs in quoted keys",
      "input": "\"key\ttab\": value",
      "expected": {
        "key\ttab": "value"
      },
      "options": {
        "strict": true
      },
      "specSection": "12"
    },
    {
      "name": "accepts tabs in quoted array elements",
      "input": "items[2]: \"a\tb\",\"c\td\"",
      "expected": {
        "items": ["a\tb", "c\td"]
      },
      "options": {
        "strict": true
      },
      "specSection": "12"
    },
    {
      "name": "accepts non-multiple indentation when strict=false",
      "input": "a:\n   b: 1",
      "expected": {
        "a": {
          "b": 1
        }
      },
      "options": {
        "indent": 2,
        "strict": false
      },
      "specSection": "12"
    },
    {
      "name": "accepts deeply nested non-multiples when strict=false",
      "input": "a:\n   b:\n     c: 1",
      "expected": {
        "a": {
          "b": {
            "c": 1
          }
        }
      },
      "options": {
        "indent": 2,
        "strict": false
      },
      "specSection": "12"
    },
    {
      "name": "parses empty lines without validation errors",
      "input": "a: 1\n\nb: 2",
      "expected": {
        "a": 1,
        "b": 2
      },
      "options": {
        "strict": true
      },
      "specSection": "12"
    },
    {
      "name": "parses root-level content (0 indentation) as always valid",
      "input": "a: 1\nb: 2\nc: 3",
      "expected": {
        "a": 1,
        "b": 2,
        "c": 3
      },
      "options": {
        "strict": true
      },
      "specSection": "12"
    },
    {
      "name": "parses lines with only spaces without validation if empty",
      "input": "a: 1\n   \nb: 2",
      "expected": {
        "a": 1,
        "b": 2
      },
      "options": {
        "strict": true
      },
      "specSection": "12"
    }
  ]
}