Clean and reorganize a little bit the code for Kaitai.

1 files changed, 0 insertions, 2474 deletions

diff --git a/tests/plugins/kaitai.py b/tests/plugins/kaitai.py
deleted file mode 100644
index b1e8881..0000000
--- a/tests/plugins/kaitai.py
+++ /dev/null
@@ -1,2474 +0,0 @@
-#!/usr/bin/python3-dbg
-# -*- coding: utf-8 -*-
-
-import locale
-
-from chrysacase import ChrysalideTestCase
-from pychrysalide.analysis.contents import MemoryContent
-from pychrysalide.plugins.kaitai.parsers import KaitaiStruct
-
-
-class TestKaitaiStruct(ChrysalideTestCase):
-    """TestCase for the KaitaiStruct parsing."""
-
-
-    @classmethod
-    def setUpClass(cls):
-
-        super(TestKaitaiStruct, cls).setUpClass()
-
-        cls.log('Setting locale suitable for floats...')
-
-        cls._old_locale = locale.getlocale(locale.LC_NUMERIC)
-
-        locale.setlocale(locale.LC_NUMERIC, 'C')
-
-
-    @classmethod
-    def tearDownClass(cls):
-
-        super(TestKaitaiStruct, cls).tearDownClass()
-
-        cls.log('Reverting locale...')
-
-        locale.setlocale(locale.LC_NUMERIC, cls._old_locale)
-
-
-
-    #################################
-    ### 4. Kaitai Struct language
-    #################################
-
-
-    def testKaitaiFixedLength(self):
-        """Load fixed-size structures."""
-
-        # Cf. 4.1. Fixed-size structures
-
-        definitions = '''
-meta:
-  id: mydesc
-  title: My Long Title
-  endian: be
-seq:
-  - id: field0
-    type: u4
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        self.assertEqual(kstruct.meta.id, 'mydesc')
-        self.assertEqual(kstruct.meta.title, 'My Long Title')
-
-        content = MemoryContent(b'\x01\x02\x03\x04')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.field0.range.length, 4)
-        self.assertEqual(parsed.field0.value, 0x01020304)
-
-        definitions = '''
-meta:
-  endian: le
-seq:
-  - id: field0
-    type: u4
-  - id: field1
-    type: u4be
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        self.assertIsNone(kstruct.meta.id)
-        self.assertIsNone(kstruct.meta.title)
-
-        content = MemoryContent(b'\x01\x02\x03\x04\x01\x02\x03\x04')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.field0.range.length, 4)
-        self.assertEqual(parsed.field0.value, 0x04030201)
-
-        self.assertEqual(parsed.field1.range.length, 4)
-        self.assertEqual(parsed.field1.value, 0x01020304)
-
-
-        definitions = '''
-seq:
-  - id: field0
-    type: u1
-  - id: field1
-    size: 2
-  - id: field2
-    size: field0 + 1
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x01\x02\x03\x04\x05')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.field0.range.length, 1)
-        self.assertEqual(parsed.field0.value, 0x01)
-
-        self.assertEqual(parsed.field1.range.length, 2)
-        self.assertEqual(parsed.field1.truncated_bytes, b'\x02\x03')
-
-        self.assertEqual(parsed.field2.range.length, 2)
-        self.assertEqual(parsed.field2.truncated_bytes, b'\x04\x05')
-
-
-    def testDocstrings(self):
-        """Handle Kaitai documentation."""
-
-        # Cf. 4.2. Docstrings
-
-        definitions = '''
-seq:
-  - id: rating
-    type: s4
-    doc: Rating, can be negative
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x01\x02\x02\x04')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.rating.creator.doc, 'Rating, can be negative')
-
-
-    def testKaitaiContents(self):
-        """Read various forms of fixed content."""
-
-        # Cf. 4.3. Checking for "magic" signatures
-
-        definitions = '''
-seq:
-  - id: field0
-    contents: [ 0, 0x10, '22', "50 ]
-'''
-
-        # ValueError: Unable to create Kaitai structure.
-        with self.assertRaisesRegex(ValueError, "Unable to create Kaitai structure"):
-            kstruct = KaitaiStruct(definitions)
-            self.assertIsNotNone(kstruct)
-
-
-        definitions = '''
-seq:
-  - id: field0
-    contents: [ 0x41, 66, 'CD' ]
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'ABCD')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.field0.range.length, 4)
-
-        self.assertEqual(parsed.field0.value, b'ABCD')
-
-
-        definitions = '''
-seq:
-  - id: field0
-    contents: ABCD
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'ABCD')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.field0.range.length, 4)
-
-
-        definitions = '''
-seq:
-  - id: field0
-    contents: "ABCD"
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'ABCD')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.field0.range.length, 4)
-
-
-        definitions = '''
-seq:
-  - id: field0
-    contents:
-      - 0x41
-      - "B"
-      - CD
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'ABCD')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.field0.range.length, 4)
-
-
-    def testVariableLengthStructures(self):
-        """Parse variable-length structures."""
-
-        # Cf. 4.4. Variable-length structures
-
-        definitions = '''
-seq:
-  - id: my_len
-    type: u1
-  - id: my_str
-    type: str
-    size: my_len
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x03ABC')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.my_len.value, 3)
-
-        self.assertEqual(parsed.my_str.value, b'ABC')
-
-
-        definitions = '''
-seq:
-  - id: my_len
-    type: u1
-  - id: my_str
-    type: str
-    size: my_len * 2
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x03ABCDEF')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.my_len.value, 3)
-
-        self.assertEqual(parsed.my_str.value, b'ABCDEF')
-
-
-        definitions = '''
-seq:
-  - id: field0
-    size-eos: true
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x01\x02\x02\x03')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(content, parsed.content)
-
-        self.assertEqual(parsed.range.addr.phys, 0)
-        self.assertEqual(parsed.range.length, len(content.data))
-
-
-    def testDelimitedStructures(self):
-        """Parse delimited structures."""
-
-        # Cf. 4.5. Delimited structures
-
-        definitions = '''
-seq:
-  - id: my_string
-    type: str
-    terminator: 0
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'ABC\x00DEF')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.my_string.value, b'ABC')
-
-
-        definitions = '''
-seq:
-  - id: my_string
-    type: strz
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'ABC\x00DEF')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.my_string.value, b'ABC')
-
-
-        definitions = '''
-seq:
-  - id: name
-    type: str
-    size: 8
-    terminator: 0
-  - id: guard
-    size: 1
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'ABC\x00\x00\x00\x00\x00x\x00')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.name.value, b'ABC')
-
-        self.assertEqual(parsed.guard.value, b'x')
-
-
-    def __passed__testEnums(self):
-        """Parse delimited structures."""
-
-        # Cf. 4.6. Enums (named integer constants)
-
-        pass
-
-
-    def testSubTypes(self):
-        """Includes subtypes definitions."""
-
-        # Cf. 4.7. Substructures (subtypes)
-
-        definitions = '''
-seq:
-  - id: field0
-    type: custom_type
-  - id: field1
-    type: custom_type
-  - id: field2
-    type: custom_type
-types:
-  custom_type:
-    seq:
-      - id: len
-        type: u1
-      - id: value
-        size: len
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x01\xaa\x02\xbb\xbb\x03\xcc\xcc\xcc')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.field0.len.value, 1)
-        self.assertEqual(parsed.field0.value.truncated_bytes, b'\xaa')
-
-        self.assertEqual(parsed.field1.len.value, 2)
-        self.assertEqual(parsed.field1.value.truncated_bytes, b'\xbb\xbb')
-
-        self.assertEqual(parsed.field2.len.value, 3)
-        self.assertEqual(parsed.field2.value.truncated_bytes, b'\xcc\xcc\xcc')
-
-
-    def testOtherAttributesAccess(self):
-        """Access attributes in other types."""
-
-        # Cf. 4.8. Accessing attributes in other types
-
-        definitions = '''
-seq:
-  - id: header
-    type: main_header
-  - id: body
-    size: header.body_len
-types:
-  main_header:
-    seq:
-      - id: magic
-        contents: FMT
-      - id: body_len
-        type: u1
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'FMT\x04\xaa\xbb\xcc\xdd')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.header.magic.raw_bytes, b'FMT')
-        self.assertEqual(parsed.header.magic.range.length, 3)
-
-        self.assertEqual(parsed.header.body_len.value, 4)
-
-        self.assertEqual(parsed.body.raw_bytes, b'\xaa\xbb\xcc\xdd')
-        self.assertEqual(parsed.body.range.length, 4)
-
-
-    def testConditionals(self):
-        """Read Kaitai values according to previous loaded values."""
-
-        # Cf. 4.9. Conditionals
-
-        definitions = '''
-seq:
-  - id: field1
-    type: u1
-  - id: field2
-    type: u1
-  - id: field3
-    type: u1
-    if: field1 + field2 > 10
-  - id: field4
-    type: u1
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x01\x02\x03\x04')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.field1.value, 0x01)
-        self.assertEqual(parsed.field2.value, 0x02)
-        self.assertFalse(hasattr(parsed, 'field3'))
-        self.assertEqual(parsed.field4.value, 0x03)
-
-
-        definitions = '''
-seq:
-  - id: field1
-    type: u1
-  - id: field2
-    type: u1
-  - id: field3
-    type: u1
-    if: field1 + field2 > 1
-  - id: field4
-    type: u1
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x01\x02\x03\x04')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.field1.value, 0x01)
-        self.assertEqual(parsed.field2.value, 0x02)
-        self.assertTrue(hasattr(parsed, 'field3'))
-        self.assertEqual(parsed.field4.value, 0x04)
-
-
-        definitions = '''
-seq:
-  - id: field1
-    type: u1
-  - id: field2
-    type: u1
-  - id: field3
-    type: u1
-    if: field1 + field2 == threshold::three
-  - id: field4
-    type: u1
-enums:
-  threshold:
-    1: one
-    2: two
-    3: three
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x01\x02\x03\x04')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.field1.value, 0x01)
-        self.assertEqual(parsed.field2.value, 0x02)
-        self.assertTrue(hasattr(parsed, 'field3'))
-        self.assertEqual(parsed.field4.value, 0x04)
-
-
-    def testRepeatedReadUntilEOS(self):
-        """Read items until the end of the stream."""
-
-        # Cf. 4.10.1. Repeat until end of stream
-
-        definitions = '''
-seq:
-  - id: field0
-    type: u2be
-    repeat: eos
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x01\x00\x02\x00\x03\x00\x04\x00')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(len(parsed.field0), len(content.data) / 2)
-
-        for i in range(4):
-            self.assertEqual(parsed.field0[i].value, (i + 1) << 8)
-
-
-    def testRepeatedReadAccordingToCounter(self):
-        """Repeat read of items for a nomber of times."""
-
-        # Cf. 4.10.2. Repeat for a number of times
-
-        definitions = '''
-seq:
-  - id: field0
-    type: u1
-  - id: field1
-    type: u1
-    repeat: expr
-    repeat-expr: 1
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x01\x01')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.field0.value, 0x01)
-
-        self.assertEqual(len(parsed.field1), 1)
-
-        for i in range(1):
-            self.assertEqual(parsed.field1[i].value, i + 1)
-
-        definitions = '''
-seq:
-  - id: field0
-    type: u1
-  - id: field1
-    type: u1
-  - id: field2
-    type: u2
-    repeat: expr
-    repeat-expr: field0 + field1
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x01\x02\x01\x00\x02\x00\x03\x00')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.field0.value, 0x01)
-        self.assertEqual(parsed.field1.value, 0x02)
-
-        self.assertEqual(len(parsed.field2), 3)
-
-        for i in range(3):
-            self.assertEqual(parsed.field2[i].value, i + 1)
-
-
-    def testRepeatUntilConditionIsMet(self):
-        """Repeat until condition is met."""
-
-        # Cf. 4.10.3. Repeat until condition is met
-
-        definitions = '''
-seq:
-  - id: numbers
-    type: u1
-    repeat: until
-    repeat-until: _ == 0xff
-  - id: extra
-    type: u1
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x01\x02\xff\xcc')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(len(parsed.numbers), 3)
-
-        for i in range(2):
-            self.assertEqual(parsed.numbers[i].value, i + 1)
-
-        self.assertEqual(parsed.numbers[2].value, 0xff)
-
-        self.assertEqual(parsed.extra.value, 0xcc)
-
-        definitions = '''
-seq:
-  - id: records
-    type: buffer_with_len
-    repeat: until
-    repeat-until: _.len == 0
-types:
-  buffer_with_len:
-    seq:
-      - id: len
-        type: u1
-      - id: value
-        size: len
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x02\xaa\xaa\x01\xbb\x00')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.records[0].len.value, 2)
-        self.assertEqual(parsed.records[0].value.raw_bytes, b'\xaa\xaa')
-
-        self.assertEqual(parsed.records[1].len.value, 1)
-        self.assertEqual(parsed.records[1].value.raw_bytes, b'\xbb')
-
-        self.assertEqual(parsed.records[2].len.value, 0)
-        self.assertEqual(parsed.records[2].value.raw_bytes, b'')
-
-
-    def testParseTLVImplementation(self):
-        """Parse a typical TLV implementation."""
-
-        # Cf. 4.11. Typical TLV implementation (switching types on an expression)
-
-        definitions = '''
-seq:
-  - id: record
-    type: rec_def
-    repeat: eos
-types:
-  rec_def:
-    seq:
-      - id: rec_type
-        type: u1
-      - id: len
-        type: u1
-      - id: body
-        size: len
-        type:
-          switch-on: rec_type
-          cases:
-            1: rec_type_1
-            2: rec_type_2
-  rec_type_1:
-    seq:
-      - id: field1
-        type: u1
-  rec_type_2:
-    seq:
-      - id: field2
-        type: u2
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x01\x01\xaa\x02\x02\xcc\xbb')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(len(parsed.record), 2)
-
-        self.assertEqual(parsed.record[0].rec_type.value, 1)
-        self.assertEqual(parsed.record[0].len.value, 1)
-        self.assertEqual(parsed.record[0].body.field1.value, 0xaa)
-
-        self.assertEqual(parsed.record[1].rec_type.value, 2)
-        self.assertEqual(parsed.record[1].len.value, 2)
-        self.assertEqual(parsed.record[1].body.field2.value, 0xbbcc)
-
-
-    def testInstanceWithDataBeyondTheSequence(self):
-        """Build instances with data beyond the sequence."""
-
-        # Cf. 4.12. Instances: data beyond the sequence
-
-        definitions = '''
-instances:
-  some_integer:
-    pos: 0x4
-    type: u1
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x01\x02\x03\x04\x05\x06\x07\x08')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.some_integer.value, 5)
-
-
-        definitions = '''
-seq:
-  - id: file_offset
-    type: u1
-  - id: file_size
-    type: u1
-instances:
-  body:
-    pos: file_offset
-    size: file_size
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x04\x02\x90\x90ABCD')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.file_offset.value, 4)
-
-        self.assertEqual(parsed.file_size.value, 2)
-
-        self.assertEqual(parsed.body.value, b'AB')
-
-
-    def testValueInstances(self):
-        """Build value instances"""
-
-        # Cf. 4.13. Value instances
-
-        definitions = '''
-seq:
-  - id: length
-    type: u1
-  - id: extra
-    type: u1
-instances:
-  length_extended:
-    value: length * 3 + extra
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x01\x02\x03\x04')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.length.value, 1)
-
-        self.assertEqual(parsed.extra.value, 2)
-
-        self.assertEqual(parsed.length_extended.value, 5)
-
-
-    def testBitSizedIntegers(self):
-        """Read bit-sized integers."""
-
-        # Cf. 4.14. Bit-sized integers
-
-        definitions = '''
-seq:
-  - id: packed_1
-    type: u1
-instances:
-  version:
-    value: (packed_1 & 0b11110000) >> 4
-  len_header:
-    value:  packed_1 & 0b00001111
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x9a')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.packed_1.value, 0x9a)
-
-        self.assertEqual(parsed.version.value, 0x9)
-
-        self.assertEqual(parsed.len_header.value, 0xa)
-
-
-    def __passed__testBitSizedIntegersBigEndian(self):
-        """Read bit-sized integers."""
-
-        # Cf. 4.14.1. Big-endian order
-
-        pass
-
-
-    def __passed__testBitSizedIntegersLittleEndian(self):
-        """Read bit-sized integers."""
-
-        # Cf. 4.14.2. Little-endian order
-
-        pass
-
-
-    def __passed__testBitSizedIntegersSpecifiedEndianness(self):
-        """Read bit-sized integers with specified bit endianness."""
-
-        # Cf. 4.14.3. Specifying bit endianness
-
-        pass
-
-
-
-    #################################
-    ### 5. Streams and substreams
-    #################################
-
-
-    def testTotalSizeLimit(self):
-        """Limit total size of structure."""
-
-        # Cf. 5.1. Limiting total size of structure
-
-        definitions = '''
-seq:
-  - id: body_len
-    type: u1
-  - id: random
-    size: 2
-  - id: comment
-    size: body_len - 2
-  - id: extra
-    type: u1
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x05\x01\x02---\xbb')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.body_len.value, 0x05)
-
-        self.assertEqual(parsed.random.raw_bytes, b'\x01\x02')
-
-        self.assertEqual(parsed.comment.raw_bytes, b'---')
-
-        self.assertEqual(parsed.extra.raw_bytes, b'\xbb')
-
-
-        definitions = '''
-seq:
-  - id: body_len
-    type: u1
-  - id: body
-    type: record_body
-    size: body_len
-  - id: extra
-    type: u1
-types:
-  record_body:
-    seq:
-      - id: random
-        size: 2
-      - id: comment
-        size-eos: true
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x05\x01\x02---\xbb')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.body_len.value, 0x05)
-
-        self.assertEqual(parsed.body.random.raw_bytes, b'\x01\x02')
-
-        self.assertEqual(parsed.body.comment.raw_bytes, b'---')
-
-        self.assertEqual(parsed.extra.raw_bytes, b'\xbb')
-
-
-    def testRepeatSizeLimit(self):
-        """Repeating until total size reaches limit."""
-
-        # Cf. 5.2. Repeating until total size reaches limit
-
-        content = MemoryContent(b'\x03\x00\x01\x02\xbb')
-
-        definitions = '''
-seq:
-  - id: total_len
-    type: u1
-  - id: files
-    type: file_entries
-    size: total_len
-  - id: extra
-    type: u1
-types:
-  file_entries:
-    seq:
-      - id: entries
-        type: entry
-        repeat: eos
-  entry:
-    seq:
-      - id: index
-        type: u1
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.total_len.value, 3)
-
-        self.assertEqual(len(parsed.files.entries), 3)
-
-        for i in range(3):
-            self.assertEqual(parsed.files.entries[i].index.value, i)
-
-        self.assertEqual(parsed.extra.value, 0xbb)
-
-
-    def testRelativePositioning(self):
-        """Parse with relative positioning."""
-
-        # Cf. 5.3. Relative positioning
-
-        content = MemoryContent(b'\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\0xe\x0f')
-
-        definitions = '''
-seq:
-  - id: some_header
-    size: 4
-  - id: body
-    type: block
-    size: 12
-types:
-  block:
-    seq:
-      - id: foo
-        type: u1
-    instances:
-      some_bytes_in_the_middle:
-        pos: 4
-        size: 4
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.some_header.value, b'\x00\x01\x02\x03')
-        self.assertEqual(parsed.body.foo.value, 0x04)
-
-        self.assertEqual(parsed.body.some_bytes_in_the_middle.value, b'\x08\x09\x0a\x0b')
-
-
-    def testAbsolutePositioning(self):
-        """Read from absolute position."""
-
-        # Cf. 5.4. Absolute positioning
-
-        content = MemoryContent(b'\x06\x03\x00\x00\x00\x00\x01\x02\x03\xbb')
-
-        definitions = '''
-seq:
-  - id: items
-    size: 10
-    type: entry
-    repeat: eos
-types:
-  entry:
-    seq:
-      - id: ofs_body
-        type: u1
-      - id: len_body
-        type: u1
-    instances:
-      body:
-        io: _root._io
-        pos: ofs_body
-        size: len_body
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.items[0].ofs_body.value, 6)
-        self.assertEqual(parsed.items[0].len_body.value, 3)
-
-        self.assertEqual(parsed.items[0].body.value, b'\x01\x02\x03')
-
-
-    def testSubstreamChoice(self):
-        """Choose a substream."""
-
-        # Cf. 5.5. Choosing a substream
-
-        content = MemoryContent(b'\xaa\xaa\xaa\xaa\x01\x02\x03\x04\x05\x06\x07\x08\x02\x03')
-
-        definitions = '''
-seq:
-  - id: global_header
-    size: 4
-  - id: block_one
-    type: big_container
-    size: 8
-  - id: block_two
-    type: smaller_container
-    size: 2
-types:
-  big_container:
-    seq:
-      - id: some_header
-        size: 8
-  smaller_container:
-    seq:
-      - id: ofs_in_big
-        type: u1
-      - id: len_in_big
-        type: u1
-    instances:
-      something_in_big:
-        io: _root.block_one._io
-        pos: ofs_in_big
-        size: len_in_big
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.block_two.ofs_in_big.value, 2)
-        self.assertEqual(parsed.block_two.len_in_big.value, 3)
-
-        self.assertEqual(parsed.block_two.something_in_big.value, b'\x03\x04\x05')
-
-
-    def __passed__testContentPreProcessing(self):
-        """Process content before parsing."""
-
-        # Cf. 5.6. Processing: dealing with compressed, obfuscated and encrypted data
-
-        pass
-
-
-
-    ##############################
-    ### 6. Expression language
-    ##############################
-
-
-    def testBasicDataTypes(self):
-        """Handle basic data types."""
-
-        # Cf. 6.1. Basic data types
-
-        definitions = '''
-seq:
-  - id: field1
-    type: u1
-  - id: field2
-    type: u2
-  - id: field4
-    type: u4
-  - id: field8
-    type: u8
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x01\x02\x02\x04\x04\x04\x04\x08\x08\x08\x08\x08\x08\x08\x08')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.field1.range.length, 1)
-        self.assertEqual(parsed.field2.range.length, 2)
-        self.assertEqual(parsed.field4.range.length, 4)
-        self.assertEqual(parsed.field8.range.length, 8)
-
-        definitions = '''
-seq:
-  - id: field1
-    type: u1
-  - id: field4
-    type: u4le
-  - id: field4bis
-    type: u4be
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x01\x02\x03\x04\x05\x02\x03\x04\x05')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.field1.value, 0x01)
-        self.assertEqual(parsed.field4.value, 0x05040302)
-        self.assertEqual(parsed.field4bis.value, 0x02030405)
-
-
-        definitions = '''
-instances:
-  number1:
-    value: 0xdead_cafe
-  number2:
-    value: 0xdead_cafe_dead_cafe
-  number3:
-    value: 12_345_678
-  number4:
-    value: 0b10100011
-  number5:
-    value: 0b1010_0011_1010_0011
-'''
-
-        content = MemoryContent(b'')
-
-        kstruct = KaitaiStruct(definitions)
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.number1.value, 0xdeadcafe)
-
-        self.assertEqual(parsed.number2.value, 0xdeadcafedeadcafe)
-
-        self.assertEqual(parsed.number3.value, 12345678)
-
-        self.assertEqual(parsed.number4.value, 0b10100011)
-
-        self.assertEqual(parsed.number5.value, 0b1010001110100011)
-
-
-        definitions = '''
-seq:
-  - id: op0
-    type: u1
-instances:
-  result:
-    value: 0xdeadcafe + op0
-  result2:
-    value: 0XdeadCAFE + op0
-'''
-
-        content = MemoryContent(b'\x00')
-
-        kstruct = KaitaiStruct(definitions)
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.result.value, 0xdeadcafe)
-
-        self.assertEqual(parsed.result2.value, 0xdeadcafe)
-
-
-        definitions = '''
-instances:
-  bytes1:
-    value: []
-  bytes2:
-    value: [ ]
-  bytes3:
-    value: [ 0x90 ]
-  bytes4:
-    value: [foo, 0, A, 0xa, 42]
-'''
-
-        content = MemoryContent(b'')
-
-        kstruct = KaitaiStruct(definitions)
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.bytes1.value, b'')
-
-        self.assertEqual(parsed.bytes2.value, b'')
-
-        self.assertEqual(parsed.bytes3.value, b'\x90')
-
-        self.assertEqual(parsed.bytes4.value, b'\x66\x6f\x6f\x00\x41\x0a\x2a')
-
-
-        definitions = '''
-instances:
-  escaped:
-    value: '[ "\\a\\b\\t\\n\\v\\f", "\\0", 0, " \\r\\e\\\"\\123" ]'
-'''
-
-        content = MemoryContent(b'')
-
-        kstruct = KaitaiStruct(definitions)
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.escaped.value, b'\x07\x08\x09\x0a\x0b\x0c\x00\x00 \x0d\x1b\x22\x53')
-
-
-        definitions_0 = r'''
-instances:
-  escaped:
-    value: "[ \"\\a\\b\\t\\n\\v\\f\", \"\\0\", 0, \"\\r\\e\\\"'\\123\" ]"
-'''
-
-        definitions_1 = r'''
-instances:
-  escaped:
-    value: [ "\\a\\b\\t\\n\\v\\f", "\\0", 0, "\\r\\e\\\"'\\123" ]
-'''
-
-        definitions_2 = '''
-instances:
-  escaped:
-    value: [ "\\\\a\\\\b\\\\t\\\\n\\\\v\\\\f", "\\\\0", 0, "\\\\r\\\\e\\\\\\"'\\\\123" ]
-'''
-
-        for d in [ definitions_0, definitions_1, definitions_2 ]:
-
-            content = MemoryContent(b'')
-
-            kstruct = KaitaiStruct(d)
-
-            parsed = kstruct.parse(content)
-
-            self.assertEqual(parsed.escaped.value, b'\x07\x08\x09\x0a\x0b\x0c\x00\x00\x0d\x1b\x22\x27\x53')
-
-
-    def __passed__testUserDefinedTypes(self):
-        """Create user-defined types."""
-
-        # Cf. 6.2.1. User-defined types
-
-        pass
-
-
-    def testArrays(self):
-        """Create various arrays."""
-
-        # Cf. 6.2.2. Arrays
-
-        definitions = '''
-instances:
-  result_0:
-    value: "[]"
-  result_1:
-    value: "[CAFE, 0, BABE]"
-  result_2:
-    value: "[CAFE, 0, BABE] == 'CAFE' + [ 0x00 ] + 'BABE'"
-  result_3:
-    value: "[CAFE, 0, BABE] == [ 0x43, 0x41, 0x46, 0x45, 0x00, 0x42, 0x41, 0x42, 0x45 ]"
-  result_4:
-    value: "[foo, 0, A, 0xa, 42] == [ 0x66, 0x6f, 0x6f, 0x00, 0x41, 0x0a, 0x2a ]"
-  result_5:
-    value: "[1, 0x55, '▒,3', 3] == [ 0x01, 0x55, 0xe2, 0x96, 0x92, 0x2c, 0x33, 0x03 ]"
-'''
-
-        content = MemoryContent(b'')
-
-        kstruct = KaitaiStruct(definitions)
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.result_0.value, b'')
-
-        self.assertEqual(parsed.result_1.value, b'CAFE\x00BABE')
-
-
-        definitions = '''
-seq:
-  - id: indexes
-    type: u1
-    repeat: eos
-instances:
-  table:
-    value: "[ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ] ]"
-  ref:
-    value: indexes
-  result_0:
-    value: table
-  result_1:
-    value: ref
-  result_2:
-    value: table[indexes[0]][indexes[1] - 1]
-  result_3:
-    value: table[indexes[0]][ref[1]]
-'''
-
-        content = MemoryContent(b'\x01\x02\x03\x04')
-
-        kstruct = KaitaiStruct(definitions)
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.result_0.value.value, b'\x01\x02\x03\x04\x05\x06\x07\x08\x09')
-
-        self.assertEqual(type(parsed.result_1).__name__, 'RecordValue')            # result_1
-        self.assertEqual(type(parsed.result_1.value).__name__, 'RecordValue')      # result_1.ref
-        self.assertEqual(type(parsed.result_1.value.value).__name__, 'RecordList') # result_1.ref.table
-
-        self.assertEqual(parsed.result_1.value.value[3].value, 0x04)
-
-        self.assertEqual(parsed.result_2.value, 5)
-
-        self.assertEqual(parsed.result_3.value, 6)
-
-
-    def testArithmeticOperators(self):
-        """Compute with arithmetic operators."""
-
-        # Cf. 6.3.1. Arithmetic operators
-
-        definitions = '''
-seq:
-  - id: op0
-    type: u1
-  - id: op1
-    type: u1
-instances:
-  result_0:
-    value: op0 + op1 * 3
-  result_1:
-    value: (2 + op0) * op1
-  result_2:
-    value: 7 * 2.0
-  result_3:
-    value: 7 / 2.0
-  result_4:
-    value: -5 % 3
-  result_5:
-    value: 4 % 3
-  result_6:
-    value: 6 - 3 - -4.0
-'''
-
-        content = MemoryContent(b'\x02\x03\x04\x05')
-
-        kstruct = KaitaiStruct(definitions)
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.result_0.value, 11)
-
-        self.assertEqual(parsed.result_1.value, 12)
-
-        self.assertEqual(parsed.result_2.value, 14.0)
-
-        self.assertEqual(parsed.result_3.value, 3.5)
-
-        self.assertEqual(parsed.result_4.value, 1)
-
-        self.assertEqual(parsed.result_5.value, 1)
-
-        self.assertEqual(parsed.result_6.value, 7.0)
-
-
-        definitions = '''
-seq:
-  - id: base
-    size: 3
-instances:
-  result_0:
-    value: "'xXx ' + base + ' -- %< --'"
-'''
-
-        content = MemoryContent(b'ABC')
-
-        kstruct = KaitaiStruct(definitions)
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.result_0.value, b'xXx ABC -- %< --')
-
-
-        definitions = '''
-seq:
-  - id: nums
-    type: u1
-    repeat: eos
-instances:
-  computed:
-    value: nums[0] + nums[3]
-  computed2:
-    value: nums[0] * nums.size + nums[3]
-  computed3:
-    value: nums[0] * nums[nums.size - 1]
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x01\x02\x03\x04')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.computed.value, 5)
-
-        self.assertEqual(parsed.computed2.value, 8)
-
-        self.assertEqual(parsed.computed3.value, 4)
-
-
-    def testRelationalOperators(self):
-        """Compute with relational operators."""
-
-        # Cf. 6.3.2. Relational operators
-
-        definitions = '''
-seq:
-  - id: op0
-    type: u1
-  - id: op1
-    type: u1
-  - id: op2
-    size: 3
-instances:
-  result0:
-    value: op0 == op1
-  result1:
-    value: op0 != op1
-  result2:
-    value: op2 == 'ABC'
-  result3:
-    value: op2 < 'ABCD'
-  result4:
-    value: (op0 + 1) >= op1
-  result5:
-    value: "(op0 + 1) == 'ABC'.length"
-'''
-
-        content = MemoryContent(b'\x02\x03ABCD')
-
-        kstruct = KaitaiStruct(definitions)
-
-        parsed = kstruct.parse(content)
-
-        self.assertFalse(parsed.result0.value)
-
-        self.assertTrue(parsed.result1.value)
-
-        self.assertTrue(parsed.result2.value)
-
-        self.assertTrue(parsed.result3.value)
-
-        self.assertTrue(parsed.result4.value)
-
-        self.assertTrue(parsed.result5.value)
-
-
-    def testBitwiseOperators(self):
-        """Compute with bitwise operators."""
-
-        # Cf. 6.3.3. Bitwise operators
-
-        definitions = '''
-seq:
-  - id: op0
-    type: u1
-  - id: op1
-    type: u1
-  - id: op2
-    type: u1
-instances:
-  result_0:
-    value: op0 & op1
-  result_1:
-    value: op1 << op0 >> 1
-  result_2:
-    value: (op2 | 0x80) >> 1
-'''
-
-        content = MemoryContent(b'\x02\x07\x01')
-
-        kstruct = KaitaiStruct(definitions)
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.result_0.value, 0x2)
-
-        self.assertEqual(parsed.result_1.value, 14)
-
-        self.assertEqual(parsed.result_2.value, 0x40)
-
-
-    def testLogicalOperators(self):
-        """Compute with logical boolean operators."""
-
-        # Cf. 6.3.4. Logical (boolean) operators
-
-        definitions = '''
-seq:
-  - id: op0
-    type: u1
-  - id: op1
-    type: u1
-instances:
-  result_0:
-    value: (op0 > 0) and not false
-  result_1:
-    value: op0 == 1 or op1 == 2
-'''
-
-        content = MemoryContent(b'\x01\x02')
-
-        kstruct = KaitaiStruct(definitions)
-
-        parsed = kstruct.parse(content)
-
-        self.assertTrue(parsed.result_0.value)
-
-        self.assertTrue(parsed.result_1.value)
-
-
-    def testTernaryOperator(self):
-        """Offer challenges to the ternary operator."""
-
-        # Cf. 6.3.5. Ternary (if-then-else) operator
-
-        definitions = '''
-seq:
-  - id: op0
-    type: u1
-  - id: op1
-    type: u1
-  - id: op2
-    type: u1
-instances:
-  result_0:
-    value: 'op0 == 0x80 ? op1 + 1 : op1 * op2'
-  result_1:
-    value: 'op0 < 0x80 ? op1 + 1 : op1 * op2'
-  result_1:
-    value: 'op0 < 0x80 ? op1 + 1 : op1 * op2'
-  result_2:
-    value: '(op0 + 0x10) >= 0x90 ? true : 123'
-  result_3:
-    value: '(op0 + 0x10) >= 0x90 and false ? true : 123'
-'''
-
-        content = MemoryContent(b'\x80\x03\x04')
-
-        kstruct = KaitaiStruct(definitions)
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.result_0.value, 4)
-
-        self.assertEqual(parsed.result_1.value, 12)
-
-        self.assertTrue(parsed.result_2.value)
-
-        self.assertEqual(parsed.result_3.value, 123)
-
-
-    def testIntegersMethods(self):
-        """Run methods from integers."""
-
-        # Cf. 6.4.1. Integers
-
-        definitions = '''
-instances:
-  bytes1:
-    value: 123.to_s == "123" and -123.to_s == '-123'
-'''
-
-        content = MemoryContent(b'')
-
-        kstruct = KaitaiStruct(definitions)
-
-        parsed = kstruct.parse(content)
-
-        self.assertTrue(parsed.bytes1.value)
-
-
-    def testFloatsMethods(self):
-        """Run methods from floating numbers."""
-
-        # Cf. 6.4.2. Floating point numbers
-
-        definitions = '''
-instances:
-  result_0:
-    value: 2.32.to_i == 2 and -7.0.to_i == -7
-'''
-
-        content = MemoryContent(b'')
-
-        kstruct = KaitaiStruct(definitions)
-
-        parsed = kstruct.parse(content)
-
-        self.assertTrue(parsed.result_0.value)
-
-
-    def XXXtestByteArraysAndStringsMethods(self):
-        """Run methods from byte arrays and strings."""
-
-        # Cf. 6.4.3. Byte arrays
-        #     6.4.4. Strings
-
-        definitions = '''
-instances:
-  result_1:
-    value: '[].length == 0'
-  result_2:
-    value: "'edcba'.reverse == 'XXabcdeXX'.substring(2, 6)"
-  result_3:
-    value: "'123'.to_i == 123 and '-123'.to_i == -123"
-  result_4:
-    value: "[ 0x50, 0x72, 0x65, 0x73, 0x65, 0x6e, 0x74, 0x61, 0x63, 0x69, 0xc3, 0xb3, 0x6e, 0x2e, 0x73, 0x78, 0x69 ].to_s('utf-8')"
-  result_5:
-    value: "'1010'.to_i(2) == 10 and 'cc'.to_i(16) == 204"
-'''
-
-        content = MemoryContent(b'')
-
-        kstruct = KaitaiStruct(definitions)
-
-        parsed = kstruct.parse(content)
-
-        self.assertTrue(parsed.result_1.value)
-
-        self.assertTrue(parsed.result_2.value)
-
-        self.assertTrue(parsed.result_3.value)
-
-        # Cf. https://docs.gtk.org/glib/character-set.html
-        #     https://developer-old.gnome.org/glib/stable/glib-Character-Set-Conversion.html#g-convert
-        self.assertEqual(parsed.result_4.value.decode('utf-8'), 'Presentación.sxi')
-
-        self.assertTrue(parsed.result_5.value)
-
-
-    def __passed__testEnumsMethods(self):
-        """Run methods from booleans."""
-
-        # Cf. 6.4.5. Enums
-
-        pass
-
-
-    def testBooleansMethods(self):
-        """Run methods from booleans."""
-
-        # Cf. 6.4.6. Booleans
-
-        definitions = '''
-instances:
-  result_0:
-    value: true.to_i == 1
-  result_1:
-    value: (1 == 2).to_i == 0
-'''
-
-        content = MemoryContent(b'')
-
-        kstruct = KaitaiStruct(definitions)
-
-        parsed = kstruct.parse(content)
-
-        self.assertTrue(parsed.result_0.value)
-
-        self.assertTrue(parsed.result_1.value)
-
-
-    def testUserDefinedTypes(self):
-        """Retrieve user-defined types."""
-
-        # Cf. 6.4.7. User-defined types
-
-        definitions = '''
-instances:
-  result_0:
-    value: _root
-'''
-
-        content = MemoryContent(b'')
-
-        kstruct = KaitaiStruct(definitions)
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.result_0.value, parsed)
-
-
-    def __passed__testArraysMethods(self):
-        """Run methods from arrays."""
-
-        # Cf. 6.4.8. Array types
-
-        pass
-
-
-    def __passed__testStreamsMethods(self):
-        """Run methods from streams."""
-
-        # Cf. 6.4.9. Streams
-
-        pass
-
-
-
-    ##############################
-    ### 7. Advanced techniques
-    ##############################
-
-
-    def testSwitchOverStrings(self):
-        """Switch over strings."""
-
-        # Cf. 7.1.1. Switching over strings
-
-        definitions = '''
-seq:
-  - id: rec_type
-    type: strz
-  - id: body
-    type:
-      switch-on: rec_type
-      cases:
-        '"KETCHUP"': rec_type_1
-        '"MUSTARD"': rec_type_2
-        '"GUACAMOLE"': rec_type_3
-types:
-  rec_type_1:
-    instances:
-      direct:
-        value: 1
-  rec_type_2:
-    instances:
-      direct:
-        value: 2
-  rec_type_3:
-    instances:
-      direct:
-        value: 3
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'GUACAMOLE\x00')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.rec_type.value, b'GUACAMOLE')
-
-        self.assertEqual(parsed.body.direct.value, 3)
-
-
-    def testSwitchOverEnums(self):
-        """Switch over enumerations."""
-
-        # Cf. 7.1.2. Switching over enums
-
-        definitions = '''
-seq:
-  - id: rec_type
-    type: u1
-    enum: media
-  - id: body
-    type:
-      switch-on: rec_type
-      cases:
-        'media::cdrom': rec_type_1
-        'media::dvdrom': rec_type_2
-        'media::cassette': rec_type_3
-types:
-  rec_type_1:
-    instances:
-      direct:
-        value: 1
-  rec_type_2:
-    instances:
-      direct:
-        value: 2
-  rec_type_3:
-    instances:
-      direct:
-        value: 3
-enums:
-  media:
-    1: cdrom
-    2: dvdrom
-    3: cassette
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x01')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.rec_type.value, 1)
-
-        self.assertEqual(parsed.body.direct.value, 1)
-
-
-    def testFourCC(self):
-        """Recognize four character code."""
-
-        # Cf. 7.1.3. FourCC
-
-        definitions = '''
-seq:
-  - id: fourcc
-    type: u4le
-    enum: pixel_formats
-  - id: len
-    type: u1
-  - id: body
-    size: len
-    type:
-      switch-on: fourcc
-      cases:
-        'pixel_formats::rgb2': block_rgb2
-        'pixel_formats::rle4': block_rle4
-        'pixel_formats::rle8': block_rle8
-types:
-  block_rgb2:
-    instances:
-      direct:
-        value: 2
-  block_rle4:
-    instances:
-      direct:
-        value: 4
-  block_rle8:
-    instances:
-      direct:
-        value: 8
-enums:
-  pixel_formats:
-    0x32424752: rgb2
-    0x34454C52: rle4
-    0x38454C52: rle8
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'RLE4\x05ABCDE')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.fourcc.value, 0x34454C52)
-
-        self.assertEqual(parsed.len.value, 0x5)
-
-        self.assertEqual(parsed.body.direct.value, 4)
-
-
-    def testNothing(self):
-        """Do nothing."""
-
-        # Cf. 7.2. Do nothing
-
-        definitions = '''
-seq:
-  - id: field_0
-    size: 1
-  - id: field_1
-    type: dummy_1
-  - id: field_2
-    type: dummy_2
-  - id: field_3
-    type: dummy_3
-  - id: field_4
-    type: dummy_4
-  - id: field_5
-    size: 1
-types:
-  # One can use empty JSON object syntax to avoid specifying any of
-  # `seq`, `instances`, etc, sections.
-  dummy_1: {}
-  # One can use explicit doc to note that there's nothing there.
-  dummy_2:
-    doc: This type is intentionally left blank.
-  # One can use empty `seq` or `instances` or `types` section, any
-  # other empty sections, or any combination of thereof.
-  dummy_3:
-    seq: []
-    instances: {}
-    types: {}
-  # One can use a very explicit notion of the fact that we want to parse 0 bytes.
-  dummy_4:
-    seq:
-      - id: no_value
-        size: 0
-'''
-
-        content = MemoryContent(b'az')
-
-        kstruct = KaitaiStruct(definitions)
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.field_0.value, b'a')
-
-        self.assertEqual(type(parsed.field_1).__name__, 'RecordEmpty')
-        self.assertEqual(parsed.field_1.range.length, 0)
-
-        self.assertEqual(type(parsed.field_2).__name__, 'RecordEmpty')
-        self.assertEqual(parsed.field_2.range.length, 0)
-
-        self.assertEqual(type(parsed.field_3).__name__, 'RecordEmpty')
-        self.assertEqual(parsed.field_3.range.length, 0)
-
-        self.assertEqual(type(parsed.field_4.no_value).__name__, 'RecordEmpty')
-        self.assertEqual(parsed.field_4.no_value.range.length, 0)
-
-        self.assertEqual(parsed.field_5.value, b'z')
-
-
-    def testConsumeIncludeTerminators(self):
-        """Consume and/or include terminators."""
-
-        # Cf. 7.3.1. Terminator: consume or include?
-
-        definitions = '''
-seq:
-  - id: str1
-    type: str
-    terminator: 0x2e # `.`
-  - id: str2
-    type: str
-    terminator: 0x2e # `.`
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'foo.bar.')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.str1.value, b'foo')
-
-        self.assertEqual(parsed.str2.value, b'bar')
-
-
-        definitions = '''
-seq:
-  - id: str1
-    type: str
-    terminator: 0x2e # `.`
-    include: true
-  - id: str2
-    type: str
-    terminator: 0x2e # `.`
-    eos-error: false
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'foo.bar')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.str1.value, b'foo.')
-
-        self.assertEqual(parsed.str2.value, b'bar')
-
-
-        definitions = '''
-seq:
-  - id: str1
-    type: str
-    terminator: 0x2e # `.`
-    consume: false
-  - id: the_rest
-    type: str
-    size-eos: true
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'foo.bar.')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.str1.value, b'foo')
-
-        self.assertEqual(parsed.the_rest.value, b'.bar.')
-
-
-        definitions = '''
-seq:
-  - id: str1
-    type: str
-    terminator: .
-  - id: the_rest
-    type: str
-    size-eos: true
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'foo.bar.')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.str1.value, b'foo')
-
-        self.assertEqual(parsed.the_rest.value, b'bar.')
-
-
-        definitions = '''
-seq:
-  - id: str1
-    type: str
-    terminator: xxx.
-  - id: the_rest
-    type: str
-    size-eos: true
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'fooxxx.bar.')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.str1.value, b'foo')
-
-        self.assertEqual(parsed.the_rest.value, b'bar.')
-
-
-    def testIgnoreErrorsInDelimitedStructures(self):
-        """Ignore errors in delimited structures."""
-
-        # Cf. 7.3.2. Ignoring errors in delimited structures
-
-        definitions = '''
-seq:
-  - id: my_string
-    type: str
-    terminator: 0
-    eos-error: false
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x61\x62\x63\x00\x64\x65\x66')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.my_string.value, b'abc')
-
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x61\x62\x63\x00')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.my_string.value, b'abc')
-
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x61\x62\x63')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.my_string.value, b'abc')
-
-
-    def __passed__testImportTypesFromOtherFiles(self):
-        """Import types from other files."""
-
-        # Cf. 7.4. Importing types from other files
-
-        pass
-
-
-    def __passed__testPlugExternalCodeForOpaqueTypes(self):
-        """Plug external code for opaque types."""
-
-        # Cf. 7.5. Opaque types: plugging in external code
-
-        pass
-
-
-    def __passed__testCustomProcessingRoutines(self):
-        """Handle custom processing routines."""
-
-        # Cf. 7.6. Custom processing routines
-
-        pass
-
-
-    def __passed__testParentTypeEnforcing(self):
-        """Enforce parent type."""
-
-        # Cf. 7.7. Enforcing parent type
-
-        pass
-
-
-    def testTypecasting(self):
-        """Ensure there is no need for typecasting."""
-
-        # Cf. 7.8. Typecasting
-
-        definitions = '''
-seq:
-  - id: num_sections
-    type: u1
-  - id: sections
-    type: section
-    repeat: expr
-    repeat-expr: num_sections
-types:
-  section:
-    seq:
-      - id: sect_type
-        type: u1
-      - id: body
-        type:
-          switch-on: sect_type
-          cases:
-            1: sect_header
-            2: sect_color_data
-  sect_header:
-    seq:
-      - id: width
-        type: u1
-      - id: height
-        type: u1
-  sect_color_data:
-    seq:
-      - id: rgb
-        size: 3
-instances:
-  check_0:
-    value: sections[0].body.width * sections[0].body.height
-  check_1:
-    value: sections[1].body.rgb
-  check_2:
-    value: sections[2].body.width * sections[2].body.height
-  check_3:
-    value: sections[3].body.rgb
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x04\x01\x02\x04\x02ABC\x01\x03\x05\x02UVW')
-
-        parsed = kstruct.parse(content)
-
-        # Vérifications externes
-
-        self.assertEqual(parsed.num_sections.value, 4)
-
-        self.assertEqual(len(parsed.sections), 4)
-
-        self.assertEqual(parsed.sections[0].body.width.value + parsed.sections[0].body.height.value, 6)
-
-        self.assertEqual(parsed.sections[1].body.rgb.value, b'ABC')
-
-        self.assertEqual(parsed.sections[2].body.width.value + parsed.sections[2].body.height.value, 8)
-
-        self.assertEqual(parsed.sections[3].body.rgb.value, b'UVW')
-
-        # Vérifications internes
-
-        self.assertEqual(parsed.check_0.value, 8)
-
-        self.assertEqual(parsed.check_1.value.value, b'ABC')
-
-        self.assertEqual(parsed.check_2.value, 15)
-
-        self.assertEqual(parsed.check_3.value.value, b'UVW')
-
-
-
-    ##########################
-    ### 8. Common pitfalls
-    ##########################
-
-
-    def testReadTypeWithSubstream(self):
-        """Read user-type with substream."""
-
-        # Cf. 8.1. Specifying size creates a substream
-
-        definitions = '''
-seq:
-  - id: header
-    size: 4
-  - id: block
-    type: block
-    size: 4 # <= important size designation, creates a substream
-instances:
-  byte_3:
-    pos: 3
-    type: u1
-types:
-  block:
-    instances:
-      byte_3:
-        pos: 3
-        type: u1
-      byte_3_alt:
-        io: _root._io # <= thanks to this, always points to a byte in main stream
-        pos: 3
-        type: u1
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x00\x01\x02\x03\x04\x05\x06\x07')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.header.value, b'\x00\x01\x02\x03')
-
-        self.assertEqual(parsed.byte_3.value, 0x03)
-
-        self.assertEqual(parsed.block.byte_3.value, 0x07)
-
-        self.assertEqual(parsed.block.byte_3_alt.value, 0x03)
-
-
-        definitions = '''
-seq:
-  - id: header
-    size: 4
-  - id: block
-    type: block
-instances:
-  byte_3:
-    pos: 3
-    type: u1
-types:
-  block:
-    instances:
-      byte_3:
-        pos: 3
-        type: u1
-      byte_3_alt:
-        io: _root._io # <= thanks to this, always points to a byte in main stream
-        pos: 3
-        type: u1
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x00\x01\x02\x03\x04\x05\x06\x07')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.header.value, b'\x00\x01\x02\x03')
-
-        self.assertEqual(parsed.byte_3.value, 0x03)
-
-        self.assertEqual(parsed.block.byte_3.value, 0x03)
-
-        self.assertEqual(parsed.block.byte_3_alt.value, 0x03)
-
-
-    def testReadTypeWithoutSubstream(self):
-        """Read user-type without substream."""
-
-        # Cf. 8.2. Not specifying size does not create a substream
-
-        definitions = '''
-seq:
-  - id: header
-    size: 2
-  - id: block_as_type1
-    type: type1
-    size: 2 # <= important, creates a substream
-types:
-  type1:
-    seq:
-      - id: val1
-        size: 2
-  type2:
-    seq:
-      - id: val2
-        size: 2
-instances:
-  block_as_type2:
-    io: block_as_type1._io
-    pos: 0
-    type: type2
-  internal_check:
-    value: block_as_type2._io == _root._io
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'aabb')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.header.value, b'aa')
-
-        self.assertEqual(parsed.block_as_type1.val1.value, b'bb')
-
-        self.assertEqual(parsed.block_as_type2.val2.value, b'bb')
-
-        self.assertFalse(parsed.internal_check.value)
-
-
-        definitions = '''
-seq:
-  - id: header
-    size: 2
-  - id: block_as_type1
-    type: type1
-types:
-  type1:
-    seq:
-      - id: val1
-        size: 2
-  type2:
-    seq:
-      - id: val2
-        size: 2
-instances:
-  block_as_type2:
-    io: block_as_type1._io
-    pos: 0
-    type: type2
-  internal_check:
-    value: block_as_type2._io == _root._io
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'aabb')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.header.value, b'aa')
-
-        self.assertEqual(parsed.block_as_type1.val1.value, b'bb')
-
-        self.assertEqual(parsed.block_as_type2.val2.value, b'aa')
-
-        self.assertTrue(parsed.internal_check.value)
-
-
-    def __passed__testSizedProcess(self):
-        """Provide a sized data to processing."""
-
-        # Cf. 8.3. Applying process without a size
-
-        pass
-
-
-    def __passed__testRelatedKeys(self):
-        """Check refering keys and their related YAML nodes."""
-
-        # Cf. 8.4. Keys relating to the whole array and to each element in repeated attributes
-
-        pass
-
-
-
-    #######################
-    ### x. Extra checks
-    #######################
-
-
-    def testMssingField(self):
-        """Raise error on missing field."""
-
-        definitions = '''
-seq:
-  - id: field0
-    size-eos: true
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\x01\x02\x02\x03')
-
-        parsed = kstruct.parse(content)
-        self.assertIsNotNone(parsed)
-
-        self.assertEqual(parsed.field0.creator.raw_id, 'field0')
-
-        self.assertEqual(parsed.field0.value, b'\x01\x02\x02\x03')
-
-        # AttributeError: 'pychrysalide.plugins.kaitai.records.RecordList' object has no attribute 'xxxx'
-        with self.assertRaisesRegex(AttributeError, "object has no attribute 'xxxx'"):
-            print(parsed.xxxx)
-
-
-    def testLEB128Values(self):
-        """Read some Little Endian Base 128 values."""
-
-        definitions = '''
-seq:
-  - id: groups
-    type: group
-    repeat: until
-    repeat-until: not _.has_next
-types:
-  group:
-    -webide-representation: '{value}'
-    doc: |
-      One byte group, clearly divided into 7-bit "value" chunk and 1-bit "continuation" flag.
-    seq:
-      - id: b
-        type: u1
-    instances:
-      has_next:
-        value: (b & 0b1000_0000) != 0
-        doc: If true, then we have more bytes to read
-      value:
-        value: b & 0b0111_1111
-        doc: The 7-bit (base128) numeric value chunk of this group
-instances:
-  len:
-    value: groups.size
-  value:
-    value: >-
-      groups[0].value
-      + (len >= 2 ? (groups[1].value << 7) : 0)
-      + (len >= 3 ? (groups[2].value << 14) : 0)
-      + (len >= 4 ? (groups[3].value << 21) : 0)
-      + (len >= 5 ? (groups[4].value << 28) : 0)
-      + (len >= 6 ? (groups[5].value << 35) : 0)
-      + (len >= 7 ? (groups[6].value << 42) : 0)
-      + (len >= 8 ? (groups[7].value << 49) : 0)
-    doc: Resulting unsigned value as normal integer
-  sign_bit:
-    value: '1 << (7 * len - 1)'
-  value_signed:
-    value: '(value ^ sign_bit) - sign_bit'
-    doc-ref: https://graphics.stanford.edu/~seander/bithacks.html#VariableSignExtend
-'''
-
-        kstruct = KaitaiStruct(definitions)
-
-        content = MemoryContent(b'\xe5\x8e\x26')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.len.value, 3)
-
-        self.assertEqual(parsed.value.value, parsed.value_signed.value)
-
-        self.assertEqual(parsed.value.value, 624485)
-
-
-        content = MemoryContent(b'\xc0\xbb\x78')
-
-        parsed = kstruct.parse(content)
-
-        self.assertEqual(parsed.len.value, 3)
-
-        self.assertNotEqual(parsed.value.value, parsed.value_signed.value)
-
-        self.assertEqual(parsed.value_signed.value, -123456)