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48 lines
2.4 KiB
Markdown
48 lines
2.4 KiB
Markdown
Upgrading from PHP-Parser 2.x to 3.0
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====================================
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This version does not include any major API changes. Only specific details of the node
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representation have changed in some cases.
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### PHP version requirements
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PHP-Parser now requires PHP 5.5 or newer to run. It is however still possible to *parse* PHP 5.2,
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5.3 and 5.4 source code, while running on a newer version.
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### Changes to the node structure
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The following changes are likely to require code changes if the respective nodes are used:
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* The `List` subnode `vars` has been renamed to `items` and now contains `ArrayItem`s instead of
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plain variables.
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* The `Catch` subnode `type` has been renamed to `types` and is now an array of `Name`s.
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* The `TryCatch` subnode `finallyStmts` has been replaced with a `finally` subnode that holds an
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explicit `Finally` node.
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* The `type` subnode on `Class`, `ClassMethod` and `Property` has been renamed to `flags`. The
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`type` subnode has retained for backwards compatibility and is populated to the same value as
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`flags`. However, writes to `type` will not update `flags` and use of `type` is discouraged.
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The following changes are unlikely to require code changes:
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* The `ClassConst` constructor changed to accept an additional `flags` subnode.
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* The `Trait` constructor now has the same form as the `Class` and `Interface` constructors: It
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takes an array of subnodes. Unlike classes/interfaces, traits can only have a `stmts` subnode.
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* The `Array` subnode `items` may now contain `null` elements (due to destructuring).
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* `void` and `iterable` types are now stored as strings if the PHP 7 parser is used. Previously
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these would have been represented as `Name` instances.
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### Removed methods
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The following methods have been removed:
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* `Comment::setLine()`, `Comment::setText()`: Create new `Comment` instances instead.
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* `Name::set()`, `Name::setFirst()`, `Name::setLast()`: Create new `Name` instances instead. For
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the latter two a combination of `Name::concat()` and `Name::slice()` can be used.
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### Miscellaneous
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* All methods on `PrettyPrinter\Standard` are now protected. Previoulsy most of them were public.
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The pretty printer should only be invoked using the `prettyPrint()`, `prettyPrintFile()` and
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`prettyPrintExpr()` methods.
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* The node dumper now prints numeric values that act as enums/flags in a string representation.
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If node dumper results are used in tests, updates may be needed to account for this. |