Revise ComponentValue parsing model #44561
Closed
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
facebook-github-bot
added
the
CLA Signed
|
This pull request was exported from Phabricator. Differential Revision: D57206706 |
NickGerleman
added a commit
to NickGerleman/react-native
that referenced
this pull request
May 13, 2024
Summary: D57089275 introduced a layer to parse component values out of the token stream. I modeled this similar to the tokenizer, as a flat iterator of component values. Because function components can nest a variable number of child component values, this now looks like storing a fully resolved tree of tokens on the heap during parsing. This diff changes the model, so that `CSSSyntaxParser::consumeComponentValue()` no longer returns a resolved CSS function value. Instead, users of the parser are expected to provide "visitors" which continue parsing, matched based on component value type pattern matched. Visitors can perform parsing specific to their context, and propagate values up the stack, based on their evaluation of the component value. Removing the heap allocated list of tokens here also lets this core CSS parsing stack keep constexpr, so I added that back, though we need to keep expression trees for math expressions in uncommon cases, so the layer up probaly won't keep constexpr. Changelog: [Internal] Differential Revision: D57206706
NickGerleman
force-pushed
the
export-D57206706
branch
from
51dad7e
to
469c5ef
Compare
|
This pull request was exported from Phabricator. Differential Revision: D57206706 |
NickGerleman
force-pushed
the
export-D57206706
branch
from
469c5ef
to
f8dbf79
Compare
NickGerleman
added a commit
to NickGerleman/react-native
that referenced
this pull request
May 13, 2024
Summary: D57089275 introduced a layer to parse component values out of the token stream. I modeled this similar to the tokenizer, as a flat iterator of component values. Because function components can nest a variable number of child component values, this now looks like storing a fully resolved tree of tokens on the heap during parsing. This diff changes the model, so that `CSSSyntaxParser::consumeComponentValue()` no longer returns a resolved CSS function value. Instead, users of the parser are expected to provide "visitors" which continue parsing, matched based on component value type pattern matched. Visitors can perform parsing specific to their context, and propagate values up the stack, based on their evaluation of the component value. Removing the heap allocated list of tokens here also lets this core CSS parsing stack keep constexpr, so I added that back, though we need to keep expression trees for math expressions in uncommon cases, so the layer up probaly won't keep constexpr. Changelog: [Internal] Differential Revision: D57206706
|
This pull request was exported from Phabricator. Differential Revision: D57206706 |
NickGerleman
added a commit
to NickGerleman/react-native
that referenced
this pull request
May 14, 2024
Summary: D57089275 introduced a layer to parse component values out of the token stream. I modeled this similar to the tokenizer, as a flat iterator of component values. Because function components can nest a variable number of child component values, this now looks like storing a fully resolved tree of tokens on the heap during parsing. This diff changes the model, so that `CSSSyntaxParser::consumeComponentValue()` no longer returns a resolved CSS function value. Instead, users of the parser are expected to provide "visitors" which continue parsing, matched based on component value type pattern matched. Visitors can perform parsing specific to their context, and propagate values up the stack, based on their evaluation of the component value. Removing the heap allocated list of tokens here also lets this core CSS parsing stack keep constexpr, so I added that back, though we need to keep expression trees for math expressions in uncommon cases, so the layer up probaly won't keep constexpr. Changelog: [Internal] Differential Revision: D57206706
NickGerleman
force-pushed
the
export-D57206706
branch
from
f8dbf79
to
03aa6fd
Compare
|
This pull request was exported from Phabricator. Differential Revision: D57206706 |
NickGerleman
added a commit
to NickGerleman/react-native
that referenced
this pull request
May 14, 2024
Summary: D57089275 introduced a layer to parse component values out of the token stream. I modeled this similar to the tokenizer, as a flat iterator of component values. Because function components can nest a variable number of child component values, this now looks like storing a fully resolved tree of tokens on the heap during parsing. This diff changes the model, so that `CSSSyntaxParser::consumeComponentValue()` no longer returns a resolved CSS function value. Instead, users of the parser are expected to provide "visitors" which continue parsing, matched based on component value type pattern matched. Visitors can perform parsing specific to their context, and propagate values up the stack, based on their evaluation of the component value. Removing the heap allocated list of tokens here also lets this core CSS parsing stack keep constexpr, so I added that back, though we need to keep expression trees for math expressions in uncommon cases, so the layer up probaly won't keep constexpr. Changelog: [Internal] Differential Revision: D57206706
NickGerleman
force-pushed
the
export-D57206706
branch
from
03aa6fd
to
ff1af7b
Compare
|
This pull request was exported from Phabricator. Differential Revision: D57206706 |
Summary: D57089275 introduced a layer to parse component values out of the token stream. I modeled this similar to the tokenizer, as a flat iterator of component values. Because function components can nest a variable number of child component values, this now looks like storing a fully resolved tree of tokens on the heap during parsing. This diff changes the model, so that `CSSSyntaxParser::consumeComponentValue()` no longer returns a resolved CSS function value. Instead, users of the parser are expected to provide "visitors" which continue parsing, matched based on component value type pattern matched. Visitors can perform parsing specific to their context, and propagate values up the stack, based on their evaluation of the component value. Removing the heap allocated list of tokens here also lets this core CSS parsing stack keep constexpr, so I added that back, though we need to keep expression trees for math expressions in uncommon cases, so the layer up probaly won't keep constexpr. Changelog: [Internal] Differential Revision: D57206706
NickGerleman
force-pushed
the
export-D57206706
branch
from
ff1af7b
to
dc94dca
Compare
|
This pull request was exported from Phabricator. Differential Revision: D57206706 |
Base commit: 44f9371 |
|
This pull request has been merged in 258b481. |
|
This pull request was successfully merged by @NickGerleman in 258b481. When will my fix make it into a release? | How to file a pick request? |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Summary:
D57089275 introduced a layer to parse component values out of the token stream. I modeled this similar to the tokenizer, as a flat iterator of component values. Because function components can nest a variable number of child component values, this now looks like storing a fully resolved tree of tokens on the heap during parsing.
This diff changes the model, so that
CSSSyntaxParser::consumeComponentValue()no longer returns a resolved CSS function value. Instead, users of the parser are expected to provide "visitors" which continue parsing, matched based on component value type pattern matched. Visitors can perform parsing specific to their context, and propagate values up the stack, based on their evaluation of the component value.Removing the heap allocated list of tokens here also lets this core CSS parsing stack keep constexpr, so I added that back, though we need to keep expression trees for math expressions in uncommon cases, so the layer up probaly won't keep constexpr.
Changelog: [Internal]
Differential Revision: D57206706