Files
rust_browser/tests/goldens/expected/171-center-element-block.layout.txt
Zachary D. Rowitsch d5234cf546 Implement HTML5 tree builder insertion modes with code review fixes (§13.2.6)
Refactor tree_builder.rs into module directory with 7 files implementing all
23 insertion modes per WHATWG HTML §13.2.6.4 as an explicit state machine.
Includes active formatting elements list with Noah's Ark clause, scope
checking for all 5 scope types, context-sensitive fragment parsing, and
iterative token reprocessing via ProcessResult enum.

Code review fixes: fix formatting element end tag truncation bug (save
node_id before truncate), replace manual element creation in catch-all
StartTag with insert_element_maybe_self_closing, add skip_next_newline for
pre/listing/textarea per spec, add QuirksMode to Document with basic DOCTYPE
detection, refactor all 23 handlers from Token to &Token to eliminate clone
per dispatch, fix self_closing handling for pre/listing/textarea/plaintext,
improve golden test 276 fixture coverage and foster-parent test assertion.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-14 22:12:19 -04:00

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LayoutBox node=#1 tag=html box=block
content: (0, 0, 800, 66)
padding: 0 0 0 0
border: 0 0 0 0
margin: 0 0 0 0
LayoutBox node=#3 tag=body box=block
content: (8, 8, 784, 50)
padding: 0 0 0 0
border: 0 0 0 0
margin: 8 8 8 8
LayoutBox node=#4 tag=center box=block
content: (8, 8, 400, 50)
padding: 0 0 0 0
border: 0 0 0 0
margin: 0 0 0 0
LayoutBox node=#6 tag=div box=block
content: (108, 8, 200, 50)
padding: 0 0 0 0
border: 0 0 0 0
margin: 0 0 0 0
inline_context: 1 lines, height=19.2, max_width=83.20705
line[0]: rect=(166.39648, 8, 83.20705, 19.2) fragments=2
frag[0]: rect=(166.39648, 9.6, 50.87812, 16) text="Centered" start=false end=false
frag[1]: rect=(220.32893, 9.6, 29.274597, 16) text="block" start=false end=false
LayoutBox node=#7 tag=anonymous box=anon
content: (100, 0, 83.20704, 16)
padding: 0 0 0 0
border: 0 0 0 0
margin: 0 0 0 0
text: "Centered block"