X-Git-Url: https://git.m6w6.name/?a=blobdiff_plain;f=docs%2Fv0.1%2Fion.stub.php;fp=docs%2Fv0.1%2Fion.stub.php;h=06eef69130538f46da3bdeb2f92fc8d172b0e4ff;hb=ff55d584097034aaea2db240f5b2b2717b2990f3;hp=0000000000000000000000000000000000000000;hpb=d9bd7572ee29180662441bf4b0131f352de0b242;p=awesomized%2Fext-ion

diff --git a/docs/v0.1/ion.stub.php b/docs/v0.1/ion.stub.php
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+<?php
+
+/**
+ * Amazon ION serialization format.
+ *
+ * @link https://github.com/awesomized/ext-ion
+ *
+ * @see https://github.com/amzn/ion-c amzn/ion-c
+ * @see https://amzn.github.io/ion-docs/ Amazon ION spec
+ *
+ * @generate-class-entries static
+ * @generate-function-entries static
+ */
+
+namespace ion;
+
+/**
+ * Serialize a PHP value as ION data.
+ *
+ * Serializes supported PHP values with the optionally provided \ion\Serializer:
+ *  * NULL
+ *  * bool
+ *  * int
+ *  * float
+ *  * string
+ *  * reference
+ *  * array
+ *  * object (incl. \Serializable, and classes implementing magic and custom __serialize)
+ *
+ * @param mixed $data PHP value(s).
+ * @param Serializer|null $serializer Custom serializer.
+ * @return string serialized ION data
+ * @throws \ion\Exception
+ */
+function serialize(mixed $data, ?Serializer $serializer = null) : string {}
+
+/**
+ * Unserialize ION data (stream) as PHP value(s).
+ *
+ * @param string|resource $data Serialized ION data, either as string buffer or stream.
+ * @return mixed unserialized PHP values
+ * @throws \ion\Exception
+ */
+function unserialize($data, ?Unserializer $unserializer = null) : mixed {}
+
+/**
+ * Serializer interface, used to customize ion\serialize()'s behavior.
+ */
+interface Serializer {
+    public function serialize(mixed $data) : string;
+}
+
+/**
+ * Unserializer interface, used to customize ion\unserialize()'s behavior.
+ */
+interface Unserializer {
+    /** @param string|resource $data */
+    public function unserialize($data) : mixed;
+}
+
+/**
+ * Base exception for the ION extension.
+ */
+class Exception extends \Exception {
+}
+
+/**
+ * ION data type.
+ *
+ * The following special PHP classes are provided for some data types:
+ * * ion\Decimal
+ * * ion\Timestamp
+ * * ion\Symbol
+ * * ion\Lob
+ */
+enum Type : int {
+    case Null       = 0x000;
+    case Bool       = 0x100;
+    case Int        = 0x200;
+    case Float      = 0x400;
+    case Decimal    = 0x500;
+    case Timestamp  = 0x600;
+    case Symbol     = 0x700;
+    case String     = 0x800;
+    case CLob       = 0x900;
+    case BLob       = 0xa00;
+    case List       = 0xb00;
+    case SExp       = 0xc00;
+    case Struct     = 0xd00;
+    case Datagram   = 0xf00;
+
+    case EOF        =-0x100;
+    case NONE       =-0x200;
+}
+
+/**
+ * @see https://amzn.github.io/ion-docs/docs/spec.html#symbol ION spec's symbol definition
+ * @see https://amzn.github.io/ion-docs/guides/symbols-guide.html ION spec's symbol guide
+ */
+class Symbol {
+    /**
+     * Create an ION symbol.
+     */
+    public function __construct(
+        /**
+         * The symbol's text representation.
+         */
+        public readonly ?string $value = null,
+        /**
+         * The symbols ID, referencing its location within a shared symbol table.
+         */
+        public readonly int $sid = -1,
+        /**
+         * The import location referencing a shared symbol table.
+         */
+        public readonly ?Symbol\ImportLocation $importLocation = null,
+    ) {}
+
+    /**
+     * Compare two symbols for equality.
+     *
+     * Two symbols are considered equal, if either:
+     * * both are the same object or NULL
+     * * both values are NULL (unknown text), and both $importLocations match
+     * * both values match, regardless of $sid and $importLocation
+     *
+     * @param Symbol $symbol
+     * @return bool whether the two Symbols equal
+     */
+    public function equals(Symbol $symbol): bool {}
+    public function __toString() : string {}
+    /** @alias ion\Symbol::__toString */
+    public function toString() : string {}
+}
+
+/**
+ * The Catalog holds a collection of ion\Symbol\Table instances queried from ion\Reader and ion\Writer instances.
+ *
+ * @see https://amzn.github.io/ion-docs/docs/symbols.html#the-catalog the ION spec's symbol guide chapter on catalog.
+ */
+class Catalog implements \Countable {
+    /** Internal cache. */
+    private array $symbolTables = [];
+
+    /** Create a new Catalog. */
+    public function __construct() {}
+
+    /** Count how many symbol tables the catalog holds. */
+    public function count() : int {}
+
+    /**
+     * Add a shared symbol table to the catalog.
+     *
+     * @param Symbol\Table $table The new table to add.
+     */
+    public function add(Symbol\Table $table) : void {}
+
+    /**
+     * Remove a shared symbol table from the catalog.
+     *
+     * @param Symbol\Table|string $table The symbol table to renmove.
+     * @return bool Success.
+     */
+    public function remove(Symbol\Table|string $table) : bool {}
+
+    /**
+     * Find a shared symbol table within the catalog.
+     *
+     * @param string $name The name of the symbol table.
+     * @param int $version The version the symbol table should match.
+     * @return Symbol\Table|null The symbol table found, if any.
+     */
+    public function find(string $name, int $version = 0) : ?Symbol\Table {}
+
+    /**
+     * Find a "best match" for a shared symbol table within the catalog.
+     *
+     * @param string $name The name of the symbol table,
+     * @param int $version The minimum version of the symbol table.
+     * @return Symbol\Table|null The symbol table found, if any.
+     */
+    public function findBest(string $name, int $version = 0) : ?Symbol\Table {}
+}
+
+/**
+ * A large object.
+ *
+ * @see ion\Type
+ * @see https://amzn.github.io/ion-docs/docs/spec.html#blob the ION spec's BLob definition
+ * @see https://amzn.github.io/ion-docs/docs/spec.html#clob the ION sepc's CLob definition
+ */
+class LOB {
+    /**
+     * Create an ION large object.
+     */
+    public function __construct(
+        /**
+         * The value of the large object.
+         */
+        public readonly string $value,
+        /**
+         * The type (CLob/BLob).
+         */
+        public readonly Type $type = Type::CLob,
+    ) {}
+}
+
+/**
+ * An arbitrary precision fixed point decimal.
+ *
+ * @see ion\Decimal\Context
+ * @see https://amzn.github.io/ion-docs/docs/decimal.html the ION spec's decimal docs
+ */
+class Decimal {
+    /**
+     * Create a new fixed point decimal.
+     */
+    public function __construct(
+        /**
+         * The decimal number.
+         */
+        public readonly string|int $number,
+        /**
+         * The decimal context.
+         */
+        public readonly ?Decimal\Context $context = null,
+    ) {}
+
+    /**
+     * Check two decimals for equality.
+     *
+     * @param Decimal $decimal The decimal to compare to.
+     * @return bool Whether both decimals equal.
+     */
+    public function equals(Decimal $decimal) : bool {}
+
+    /**
+     * Check whether the decimal is actually a big integer.
+     * @return bool Whether the decimal is actually an integer.
+     */
+    public function isInt() : bool {}
+
+    public function __toString() : string {}
+    /**
+     * Get the string representation of the decimal.
+     * @alias ion\Decimal::__toString
+     */
+    public function toString() : string {}
+
+    /**
+     * Get the integer represention of the decimal.
+     * @throws \ion\Exception If the decimal is actually not an integer.
+     */
+    public function toInt() : int {}
+}
+
+/**
+ * An ION Timestamp.
+ * @see https://amzn.github.io/ion-docs/docs/spec.html#timestamp the ION spec's timestamp definition
+ * @see https://php.net/date PHP's date documentation
+ */
+class Timestamp extends \DateTime {
+    /**
+     * The timestamp's precision. See ion\Timestamp\Precision.
+     */
+    public readonly int $precision;
+    /**
+     * The timestamp's format. See ion\Timestamp\Format.
+     */
+    public readonly string $format;
+
+    /**
+     * Create a new ION timestamp.
+     *
+     * @param Timestamp\Precision|int $precision The timestamp's precision.
+     * @param Timestamp\Format|string|null $format The timestamp's format.
+     * @param string|null $datetime The timestamp's value.
+     * @param \DateTimeZone|null $timezone The timestamp's timezone.
+     */
+    public function __construct(
+        Timestamp\Precision|int $precision,
+        Timestamp\Format|string|null $format = null,
+        ?string $datetime = null,
+        ?\DateTimeZone $timezone = null,
+    ) {}
+
+    public function __toString() : string {}
+}
+
+/**
+ * ION reader API.
+ */
+interface Reader extends \RecursiveIterator {
+    public function getType() : Type;
+    public function hasAnnotations() : bool;
+    public function hasAnnotation(string $annotation) : bool;
+    public function isNull() : bool;
+    public function isInStruct() : bool;
+    public function getFieldName() : string;
+    public function getFieldNameSymbol() : Symbol;
+    public function getAnnotations() : array;
+    public function getAnnotationSymbols() : array;
+    public function countAnnotations() : int;
+    public function getAnnotation(int $index) : string;
+    public function getAnnotationSymbol(int $index) : Symbol;
+
+    public function readNull() : Type;
+    public function readBool() : bool;
+    public function readInt() : int|string;
+    public function readFloat() : float;
+    public function readDecimal() : Decimal;
+    public function readTimestamp() : Timestamp;
+    public function readSymbol() : Symbol;
+    public function readString() : string;
+    /** @param ref $string */
+    public function readStringPart(&$string, int $length = 0x1000) : bool;
+    public function readLob() : string;
+    /** @param ref $string */
+    public function readLobPart(&$string, int $length = 0x1000) : bool;
+
+    public function getPosition() : int;
+    public function getDepth() : int;
+
+    public function seek(int $offset, int $length = -1) : void;
+    /*
+    public function getSymbolTable() : SymbolTable;
+    public function setSymbolTable(SymbolTable $table) : void;
+    */
+    public function getValueOffset() : int;
+    public function getValueLength() : int;
+}
+
+/**
+ * ION writer API.
+ */
+interface Writer {
+    public function writeNull() : void;
+    public function writeTypedNull(Type $type) : void;
+    public function writeBool(bool $value) : void;
+    public function writeInt(int|string $value) : void;
+    public function writeFloat(float $value) : void;
+    public function writeDecimal(Decimal|string $value) : void;
+    public function writeTimestamp(Timestamp|string $value) : void;
+    public function writeSymbol(Symbol|string $value) : void;
+    public function writeString(string $value) : void;
+    public function writeCLob(string $value) : void;
+    public function writeBLob(string $value) : void;
+
+    public function startLob(Type $type) : void;
+    public function appendLob(string $data) : void;
+    public function finishLob() : void;
+
+    public function startContainer(Type $type) : void;
+    public function finishContainer() : void;
+
+    public function writeFieldName(string $name) : void;
+
+    public function writeAnnotation(Symbol|string ...$annotation) : void;
+
+    public function getDepth() : int;
+    public function flush() : int;
+    public function finish() : int;
+
+    // public function writeOne(Reader $reader) : void;
+    // public function writeAll(Reader $reader) : void;
+
+    // public function getCatalog() : Catalog;
+    // public function setCatalog(Catalog $catalog) : void;
+
+    // public function getSymbolTable() : Symbol\Table;
+    // puvlic function setSymbolTable(Symbol\Table $table) : void;
+}
+
+namespace ion\Symbol;
+
+/**
+ * The import location (referring to a shared table) of a symbol.
+ */
+class ImportLocation {
+    /**
+     * Create a new import location.
+     */
+    public function __construct(
+        /**
+         * The name of the shared symbol table.
+         */
+        public readonly string $name,
+        /**
+         * The location (sid) of the symbol within the table.
+         */
+        public readonly int $location,
+    ) {}
+}
+
+/**
+ * Base interface of built-in shared symbol tables.
+ */
+interface Enum {
+    /**
+     * @return \ion\Symbol Instance of the symbol.
+     */
+    public function toSymbol() : \ion\Symbol;
+
+    /**
+     * @return int The symbol id.
+     */
+    public function toSID() : int;
+
+    /**
+     * @return string The symbol's textual representation.
+     */
+    public function toString() : string;
+}
+
+/**
+ * Base interface of an ION symbol table.
+ */
+interface Table {
+    /**
+     * Get the maximum symbol ID within the symbol table.
+     * @return int The maximum symbol ID.
+     */
+    public function getMaxId() : int;
+
+    /**
+     * Add a symbol to the table.
+     *
+     * @param \ion\Symbol|string $symbol The symbol (value) to add.
+     * @return int The symbol ID.
+     */
+    public function add(\ion\Symbol|string $symbol) : int;
+
+    /**
+     * Find a symbol within the symbol table, including imports.
+     *
+     * @param string|int $id The ID or text of the symbol to find.
+     * @return \ion\Symbol|null The symbol found, if any.
+     */
+    public function find(string|int $id) : ?\ion\Symbol;
+
+    /**
+     * Find a symbol within **only this** symbol table, ignoring imports.
+     *
+     * @param string|int $id The ID or text of the symbol to find.
+     * @return \ion\Symbol|null The symbol found, if any.
+     */
+    public function findLocal(string|int $id) : ?\ion\Symbol;
+}
+
+/**
+ * The built-in ION system symbols.
+ */
+enum System : string implements \ion\Symbol\Enum {
+    case Ion                = '$ion';
+    case Ivm_1_0            = '$ion_1_0';
+    case IonSymbolTable     = '$ion_symbol_table';
+    case Name               = 'name';
+    case Version            = 'version';
+    case Imports            = 'imports';
+    case Symbols            = 'symbols';
+    case MaxId              = 'max_id';
+    case SharedSymbolTable  = '$ion_shared_symbol_table';
+
+    /** @alias ion\Symbol\Enum::toSymbol */
+    public function toSymbol() : \ion\Symbol {}
+    /** @alias ion\Symbol\Enum::toSID */
+    public function toSID() : int {}
+    /** @alias ion\Symbol\Enum::toString */
+    public function toString() : string {}
+
+    /**
+     * Get the built-in ION system shared symbol table.
+     *
+     * @return Table\Shared The system symbol table.
+     */
+    public static function asTable() : Table\Shared {}
+}
+
+/**
+ * The built-in PHP symbols.
+ */
+enum PHP : string implements \ion\Symbol\Enum {
+    case PHP            = 'PHP';
+    case Reference      = 'R';
+    case Backref        = 'r';
+    case Property       = 'p';
+    case Object         = 'o';
+    case ClassObject    = 'c';
+    case MagicObject    = 'O';
+    case CustomObject   = 'C';
+    case Enum           = 'E';
+    case Serializable   = 'S';
+
+    /** @alias ion\Symbol\Enum::toSymbol */
+    public function toSymbol() : \ion\Symbol {}
+    /** @alias ion\Symbol\Enum::toSID */
+    public function toSID() : int {}
+    /** @alias ion\Symbol\Enum::toString */
+    public function toString() : string {}
+
+    /**
+     * Get the built-in PHP shared symbol table.
+     *
+     * @return Table\Shared The builtin PHP shared symbol table.
+     */
+    public static function asTable() : Table\Shared {}
+}
+
+namespace ion\Symbol\Table;
+
+/**
+ * A local symbol table.
+ *
+ * @see https://amzn.github.io/ion-docs/guides/symbols-guide.html the ION spec's symbol guide
+ * @see https://amzn.github.io/ion-docs/guides/cookbook.html#using-a-local-symbol-table the ION doc's cookbook
+ */
+class Local implements \ion\Symbol\Table {
+    /** Internal cache. */
+    private array $imports = [];
+    /** Internal cache. */
+    private array $symbols = [];
+
+    /**
+     * Create a local symbol table.
+     */
+    public function __construct() {}
+
+    /**
+     * Import a symbol table.
+     *
+     * @param \ion\Symbol\Table $table The symbol table to import.
+     * @return void
+     */
+    public function import(\ion\Symbol\Table $table) : void {}
+
+    /** @alias ion\Symbol\Table::getMaxId */
+    public function getMaxId() : int {}
+
+    /** @alias ion\Symbol\Table::add */
+    public function add(\ion\Symbol|string $symbol) : int {}
+    /** @alias ion\Symbol\Table::find */
+    public function find(string|int $id) : ?\ion\Symbol {}
+    /** @alias ion\Symbol\Table::findLocal */
+    public function findLocal(string|int $id) : ?\ion\Symbol {}
+}
+
+/**
+ * A shared symbol table.
+ *
+ * @see https://amzn.github.io/ion-docs/guides/symbols-guide.html the ION spec's symbol guide
+ * @see https://amzn.github.io/ion-docs/guides/cookbook.html#using-a-shared-symbol-table the ION doc's cookbook
+ */
+class Shared implements \ion\Symbol\Table {
+    /**
+     * Create a shared symbol table.
+     */
+    public function __construct(
+        /**
+         * The name of the shared symbol table.
+         */
+        public readonly string $name,
+        /**
+         * The version of the shared symbol table.
+         */
+        public readonly int $version = 1,
+        /**
+         * Predefined list of symbols as array of strings.
+         */
+        ?array $symbols = null,
+    ) {}
+
+    /** Internal cache. */
+    private array $symbols = [];
+
+    /** @alias ion\Symbol\Table::getMaxId */
+    public function getMaxId() : int {}
+
+    /** @alias ion\Symbol\Table::add */
+    public function add(\ion\Symbol|string $symbol) : int {}
+    /** @alias ion\Symbol\Table::find */
+    public function find(string|int $id) : ?\ion\Symbol {}
+    /** @alias ion\Symbol\Table::findLocal */
+    public function findLocal(string|int $id) : ?\ion\Symbol {}
+}
+
+namespace ion\Decimal;
+
+/**
+ * An ion\Decimal's context.
+ */
+class Context {
+    /**
+     * Create a new decimal context.
+     */
+    public function __construct(
+        /**
+         * Maximum digits.
+         */
+        public readonly int $digits,
+        /**
+         * Maximum exponent.
+         */
+        public readonly int $eMax,
+        /**
+         * Minimum exponent.
+         */
+        public readonly int $eMin,
+        /**
+         * Rounding mode.
+         */
+        public readonly Context\Rounding|int $round,
+        /**
+         * Whether to clamp.
+         */
+        public readonly bool $clamp,
+    ) {}
+
+    /**
+     * Create a context suitable for 32bit decimals.
+     */
+    public static function Dec32() : Context {}
+
+    /**
+     * Create a context suitable for 64bit decimals.
+     */
+    public static function Dec64() : Context {}
+
+    /**
+     * Create a context suitable for 128bit decimals.
+     */
+    public static function Dec128() : Context {}
+
+    /**
+     * Create a context with maximum settings.
+     * @param Context\Rounding|int $round Rounding mode.
+     */
+    public static function DecMax(Context\Rounding|int $round = Context\Rounding::HalfEven) : Context {}
+}
+
+namespace ion\Decimal\Context;
+
+/**
+ * Rounding mode.
+ */
+enum Rounding : int {
+    case Ceiling    = 0;
+    case Up         = 1;
+    case HalfUp     = 2;
+    case HalfEven   = 3;
+    case HalfDown   = 4;
+    case Down       = 5;
+    case Floor      = 6;
+    case Down05Up   = 7;
+}
+
+namespace ion\Timestamp;
+
+/**
+ * Timestamp precision.
+ */
+enum Precision : int {
+    case Year           = 0x1;
+    case Month          = 0x1|0x2;
+    case Day            = 0x1|0x2|0x4;
+    case Min            = 0x1|0x2|0x4|0x10;
+    case Sec            = 0x1|0x2|0x4|0x10|0x20;
+    case Frac           = 0x1|0x2|0x4|0x10|0x20|0x40;
+    case MinTZ          = 0x1|0x2|0x4|0x10|0x80;
+    case SecTZ          = 0x1|0x2|0x4|0x10|0x20|0x80;
+    case FracTZ         = 0x1|0x2|0x4|0x10|0x20|0x40|0x80;
+}
+
+/**
+ * Timestamp format.
+ */
+enum Format : string {
+    case Year           = "Y\T";
+    case Month          = "Y-m\T";
+    case Day            = "Y-m-d\T";
+    case Min            = "Y-m-d\TH:i";
+    case Sec            = "Y-m-d\TH:i:s";
+    case Frac           = "Y-m-d\TH:i:s.v";
+    case MinTZ          = "Y-m-d\TH:iP";
+    case SecTZ          = "Y-m-d\TH:i:sP";
+    case FracTZ         = "Y-m-d\TH:i:s.vP";
+}
+
+namespace ion\Reader;
+
+/**
+ * Reader options.
+ */
+class Options {
+    public function __construct(
+        /**
+         * ION catalog to use for symbol lookup.
+         */
+        public readonly ?\ion\Catalog $catalog = null,
+        /**
+         * Decimal context to use.
+         */
+        public readonly ?\ion\Decimal\Context $decimalContext = null,
+        /**
+         * Callback as function(\ion\Reader):void called upon local symbol table context change.
+         */
+        public readonly ?\Closure $onContextChange = null,
+        /**
+         * Whether to return otherwise hidden system values.
+         */
+        public readonly bool $returnSystemValues = false,
+        /**
+         * The maximum depth of nested containers.
+         */
+        public readonly int $maxContainerDepth = 10,
+        /**
+         * The maximum number of annotations allowed on a single value.
+         */
+        public readonly int $maxAnnotations = 10,
+        /**
+         * The maximum number of bytes of all annotations on a single value.
+         */
+        public readonly int $annotationBufferSize = 0x4000,
+        /**
+         * The maximum number of bytes of a symbol/value/chunk.
+         */
+        public readonly int $tempBufferSize = 0x4000,
+        /**
+         * Whether to skip UTF-8 validation.
+         */
+        public readonly bool $skipCharacterValidation = false,
+    ) {}
+}
+
+/**
+ * Base implementation of ION readers.
+ */
+abstract class Reader implements \ion\Reader {
+    /**
+     * Reader options.
+     */
+    public readonly ?Options $options;
+
+    public function hasChildren() : bool {}
+    public function getChildren() : \ion\Reader {}
+
+    public function rewind() : void {}
+    public function next() : void {}
+    public function valid() : bool {}
+    public function key() : mixed {}
+    public function current() : mixed {}
+
+    public function getType() : \ion\Type {}
+    public function hasAnnotations() : bool {}
+    public function hasAnnotation(string $annotation) : bool {}
+    public function isNull() : bool {}
+    public function isInStruct() : bool {}
+    public function getFieldName() : string {}
+    public function getFieldNameSymbol() : \ion\Symbol {}
+    public function getAnnotations() : array {}
+    public function getAnnotationSymbols() : array {}
+    public function countAnnotations() : int {}
+    public function getAnnotation(int $index) : string {}
+    public function getAnnotationSymbol(int $index) : \ion\Symbol {}
+
+    public function readNull() : \ion\Type {}
+    public function readBool() : bool {}
+    public function readInt() : int|string {}
+    public function readFloat() : float {}
+    public function readDecimal() : \ion\Decimal {}
+    public function readTimestamp() : \ion\Timestamp {}
+    public function readSymbol() : \ion\Symbol {}
+    public function readString() : string {}
+    /** @param ref $string */
+    public function readStringPart(&$string, int $length = 0x1000) : bool {}
+    public function readLob() : string {}
+    /** @param ref $string */
+    public function readLobPart(&$string, int $length = 0x1000) : bool {}
+
+    public function getPosition() : int {}
+    public function getDepth() : int{}
+
+    public function seek(int $offset, int $length = -1) : void {}
+    /*
+    public function getSymbolTable() : SymbolTable {}
+    public function setSymbolTable(SymbolTable $table) : void {}
+    */
+    public function getValueOffset() : int {}
+    public function getValueLength() : int {}
+}
+
+/**
+ * ION string buffer reader API.
+ */
+interface Buffer extends \ion\Reader {
+    /**
+     * Get the buffer read from.
+     *
+     * @return string The buffer read from.
+     */
+    public function getBuffer() : string;
+}
+
+/**
+ * ION stream reader API.
+ */
+interface Stream extends \ion\Reader {
+    /**
+     * Get the stream read from.
+     *
+     * @return resource The stream read from.
+     */
+    public function getStream();
+
+    /**
+     * Reset the stream read from.
+     *
+     * @param resource $stream The new stream to from.
+     */
+    public function resetStream($stream) : void;
+
+    /**
+     * Reset the stream read from, limiting length to read.
+     *
+     * @param resource $stream The stream to read from.
+     * @param int $length The maximum length to read from $stream.
+     */
+    public function resetStreamWithLength($stream, int $length) : void;
+}
+
+namespace ion\Reader\Buffer;
+
+/**
+ * ION buffer reader.
+ */
+class Reader extends \ion\Reader\Reader implements \ion\Reader\Buffer {
+    /**
+     * Create a new string buffer reader.
+     *
+     * @param string $buffer The buffer to read from.
+     * @param \ion\Reader\Options|null $options Reader options.
+     */
+    public function __construct(
+        string $buffer,
+        ?\ion\Reader\Options $options = null,
+    ) {}
+
+    public function getBuffer() : string {}
+}
+
+namespace ion\Reader\Stream;
+
+/**
+ * ION stream reader.
+ */
+class Reader extends \ion\Reader\Reader implements \ion\Reader\Stream {
+    /**
+     * Create a new stream reader.
+     *
+     * @param resource $stream The stream to read from.
+     * @param \ion\Reader\Options|null $options Reader options.
+     */
+    public function __construct(
+        $stream,
+        ?\ion\Reader\Options $options = null,
+    ) {}
+
+    /**
+     * Get the stream read from.
+     *
+     * @return resource The stream read from.
+     */
+    public function getStream() {}
+
+    /** @param resource $stream */
+    public function resetStream($stream) : void {}
+    /** @param resource $stream */
+    public function resetStreamWithLength($stream, int $length) : void {}
+}
+
+namespace ion\Writer;
+
+/**
+ * ION writer options.
+ */
+class Options {
+    /**
+     * Create custom ION writer options.
+     */
+    public function __construct(
+        /**
+         * ION catalog to use for symbol lookup.
+         */
+        public readonly ?\ion\Catalog $catalog = null,
+        /**
+         * Decimal context to use.
+         */
+        public readonly ?\ion\Decimal\Context $decimalContext = null,
+        /**
+         * Whether to output binary ION.
+         */
+        public readonly bool $outputBinary = false,
+        /**
+         * Whether to write doubles which fit in 32 bits as floats.
+         */
+        public readonly bool $compactFloats = false,
+        /**
+         * Whether to slash-escape all non ASCII bytes.
+         */
+        public readonly bool $escapeNonAscii = false,
+        /**
+         * Whether to produce pretty-printed output.
+         */
+        public readonly bool $prettyPrint = false,
+        /**
+         * Whether to indent with tabs, when pretty-printing.
+         */
+        public readonly bool $indentTabs = true,
+        /**
+         * The number of spaces to use for indentation instead of tabs, when pretty-printing.
+         */
+        public readonly int $indentSize = 2,
+        /**
+         * Whether to immediately flush every value written.
+         */
+        public readonly bool $flushEveryValue = false,
+        /**
+         * Maximum depth of nested containers.
+         */
+        public readonly int $maxContainerDepth = 10,
+        /**
+         * The maximum number of annotations allowed on a single value.
+         */
+        public readonly int $maxAnnotations = 10,
+        /**
+         * Temporary buffer size.
+         */
+        public readonly int $tempBufferSize = 0x4000,
+    ) {}
+}
+
+/**
+ * Base implementation of common functionality of ION writers.
+ */
+abstract class Writer implements \ion\Writer {
+    public function writeNull() : void {}
+    public function writeTypedNull(\ion\Type $type) : void {}
+    public function writeBool(bool $value) : void {}
+    public function writeInt(int|string $value) : void {}
+    public function writeFloat(float $value) : void {}
+    public function writeDecimal(\ion\Decimal|string $value) : void {}
+    public function writeTimestamp(\ion\Timestamp|string $value) : void {}
+    public function writeSymbol(\ion\Symbol|string $value) : void {}
+    public function writeString(string $value) : void {}
+    public function writeCLob(string $value) : void {}
+    public function writeBLob(string $value) : void {}
+
+    public function startLob(\ion\Type $type) : void {}
+    public function appendLob(string $data) : void {}
+    public function finishLob() : void {}
+
+    public function startContainer(\ion\Type $type) : void {}
+    public function finishContainer() : void {}
+
+    public function writeFieldName(string $name) : void {}
+
+    public function writeAnnotation(\ion\Symbol|string ...$annotation) : void {}
+
+    public function getDepth() : int {}
+    public function flush() : int {}
+    public function finish() : int {}
+
+    // public function writeOne(\ion\Reader $reader) : void {}
+    // public function writeAll(\ion\Reader $reader) : void {}
+}
+
+/**
+ * ION buffer writer API.
+ */
+interface Buffer extends \ion\Writer {
+    /**
+     * Get the buffer written to.
+     *
+     * @reeturn string The buffer written so far.
+     */
+    public function getBuffer() : string;
+
+    /**
+     * Reset the buffer written to.
+     */
+    public function resetBuffer() : void;
+}
+
+/**
+ * ION stream writer API.
+ */
+interface Stream extends \ion\Writer {
+    /**
+     * Get the stream being written to.
+     * @return resource
+     */
+    public function getStream();
+}
+
+namespace ion\Writer\Buffer;
+
+/**
+ * IO buffer writer.
+ */
+class Writer extends \ion\Writer\Writer implements \ion\Writer\Buffer {
+    /**
+     * Create a new buffer writer.
+     *
+     * @param \ion\Writer\Options|null $options Writer options.
+     */
+    public function __construct(
+        ?\ion\Writer\Options $options = null,
+    ) {}
+
+    public function getBuffer() : string {}
+    public function resetBuffer() : void {}
+}
+
+namespace ion\Writer\Stream;
+
+/**
+ * ION stream writer.
+ */
+class Writer extends \ion\Writer\Writer implements \ion\Writer\Stream {
+    /**
+     * Create a new stream writer.
+     *
+     * @param resource $stream The stream to write to.
+     * @param \ion\Writer\Options|null $options Writer options.
+     */
+    public function __construct(
+        $stream,
+        ?\ion\Writer\Options $options = null,
+    ) {}
+    /**
+     * @return resource
+     */
+    public function getStream() {}
+}
+
+namespace ion\Serializer;
+
+/**
+ * Specialization of the serializer for PHP.
+ */
+class PHP implements \ion\Serializer {
+    /**
+     * Create a new PHP ION serializer.
+     */
+    public function __construct(
+        /**
+         * Writer options.
+         */
+        public readonly ?\ion\Writer\Options $writerOptions = null,
+        /**
+         * Whether to write the top level array as multiple ION sequences.
+         */
+        public readonly bool $multiSequence = false,
+        /**
+         * Whether to call magic __serialize() methods on objects to serialize.
+         */
+        public readonly bool $callMagicSerialize = true,
+        /**
+         * Whether and which custom serialize method to call on objects to serialize.
+         */
+        public readonly ?string $callCustomSerialize = null,
+    ) {}
+
+    public function serialize(mixed $data) : string {}
+}
+
+namespace ion\Unserializer;
+
+/**
+ * Specialization of the unserializer for PHP.
+ */
+class PHP implements \ion\Unserializer {
+    /**
+     * Create a new ION PHP unserializer.
+     */
+    public function __construct(
+        /**
+         * Reader options.
+         */
+        public readonly ?\ion\Reader\Options $readerOptions = null,
+        /**
+         * Whether to continue reading multiple ION sequences after the first one.
+         */
+        public readonly bool $multiSequence = false,
+        /**
+         * Whether to call magic __unserialize() methods on objects to unserialize.
+         */
+        public readonly bool $callMagicUnserialize = true,
+        /**
+         * Whether and which custom unserialize method to call on objects to unserialize.
+         */
+        public readonly ?string $callCustomUnserialize = null,
+    ){}
+
+    /** @param string|resource $data */
+    public function unserialize($data) : mixed {}
+}