Custom Error Handling Prototype - #145

Draft

ianjosephwilson wants to merge 78 commits into

t-strings:mainfrom

ianjosephwilson:ian/custom_error_handling

Commits on Jul 26, 2026

Add simple copy method to allow simulating removing placeholders.
ianjosephwilson
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5d44087
Typeguard against bogus empty starttag_text.
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4cb2111
Add debugging/introspection info to open tags.
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28c6198
Improve unclosed tags message for ambiguous slash case.
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45fbef7
Fix method defn order.
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181ee6b
Always fallback to tag str for error, fixes typecheck.
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fcb9f4c
Refine error messages for other cases with trailing slash is consumed instead of self-closing.
ianjosephwilson
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8b0638e
Use getter directly but still guard against None.
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2a1f10a
Restrict self-close suggestion to components.
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8c617dc
Restore component start/tag mismatch test.
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c1b0132
Add tmap and format_endtag for error reporting.
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42dcdb2
Be more surgical about catching nested component error.
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d0decf4
Clump parse info into class.
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1dc72ed
Cut this out for now.
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0d7a0a4
Fold parse info tracking into source tracker.
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ae65b27
Backport more consistent parser position and source info tracking.
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1d7a8ad
Formatting.
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e47303c
Actually store positions on other elements.
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89b052a
Test that the parser position is actually being set on the nodes.
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4f5077a
Fold loop into test as tempfix for type issues around parser_pos.
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2abcb85
Coerce SourceTracker into Iterator and consolidate placeholder tracking there.
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d462bd4
Pull the placeholder config definition up to processor to keep parser positions consistent across parsings.
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f85ab7c
Add TTree to wrap root TNode coming from parser with metadata.
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52d9edd
Add helper method to unpack sinfos tuple into a mapping.
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b7ad50f
Draft of adding custom exceptions.
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c5fa872
use regular assertion error for what would be our own bug
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4eabdd2
Update parser exception tests.
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04ff538
Update processor test exceptions.
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0caca2e
Add draft source reader for error reporting.
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809fda7
Add some parser error reporting examples.
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48756cc
Add processor error reporting example.
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2e2bed4
Fix test for now.
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93fd99a
Use the starttag ref directly to compute start of children body.
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26be511
Use proxy methods on SourceTracker.
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18b90e4
Use TemplateRef instead of str for starttag_text.
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193f613
Use TemplateRef for attrs in source info.
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0ef7146
Rein in placeholders with placeholder-independent PartPosition.
ianjosephwilson
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48dfdf1
Try to reduce position translation complexity.
ianjosephwilson
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b28e4db
Add ambiguous slash checks for normal elements as well.
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90de493
Simplify
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2b348e0
Drop unused method.
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0a32435
Use chain.from_iterable instead of sum.
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e915387
Add note to docs.
ianjosephwilson
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715c359
Refactor error display and expand type handling.
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d49af2a
Add processing error handling tests.
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a8dcb87
Cleanup logic a bit.
ianjosephwilson
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edf0c09
Bring parser pos translator into parser itself.
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d1a1e9c
Add fragment test.
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a6bf918
Formatting.
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d6aea2a
Move values match to reader and cleanup iteration in tracker.
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8296c56
Don't go to the next part if there was a NL.
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3e9492d
Include comment 'tags' in error message.
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2da2b75
Move slice into TemplateRef and start proper tests.
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e7d0263
Add a validation check to make sure positions are logical.
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cf2cddb
Expand position translator coverage.
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dbf31f5
sp
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7bc2728
Improve messaging when tags are not closed.
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ea37e69
Update comment.
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ccfb151
Expand component invocation testing.
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0d3663f
Test internal function/factory component error.
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8047cda
Check internal element attribute error.
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f92b10d
Convert unified index to normal interpolations index.
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f77723d
Expand test coverage for TemplateRef.slice.
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cfacc40
Add tests for part position to line position conversion
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fd35ec7
Disable formatter for whitespace tests.
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b0ff3d7
Remove dependency on the actively tracked template index.
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b26165d
Fix ty warning for now.
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64b668d
Drop ref attrs until we need them.
ianjosephwilson
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e2f55fb
Fix first==last strings bug and interpolations bug, improve clarity.
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657e7d1
Import from true origin.
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fd07cae
Move unified index handling into template_utils.
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2a1ef8c
Correct test, use function.
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3220d37
Use unified indexing in tref iter and group iter tests.
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cecb384
Add TemplateRef.parts_iter that includes empty strings.
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a02bf9f
Expand tests to cover same start and stop for both a string and interpolation.
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d223853
Drop the walrus.
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a9520c4
Insource combining trefs and expand tests.
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857d2dd

Commits on Jul 28, 2026

Simplify parser pos translator by precomputing and preconfiguring more away ParserPosition.
ianjosephwilson
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f9459ca