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org.apache.avro.io.parsing

public abstract Class Symbol

extends Object
Class Inheritance
Known Direct Subclasses
org.apache.avro.io.parsing.Symbol.Terminal, org.apache.avro.io.parsing.Symbol.ImplicitAction, org.apache.avro.io.parsing.Symbol.Root, org.apache.avro.io.parsing.Symbol.Sequence, org.apache.avro.io.parsing.Symbol.Repeater, org.apache.avro.io.parsing.Symbol.Alternative, org.apache.avro.io.parsing.Symbol.IntCheckAction
Imports
java.util.ArrayList, .HashMap, .HashSet, .Iterator, .List, .Map, .NoSuchElementException, .Set, org.apache.avro.Schema
Symbol is the base of all symbols (terminals and non-terminals) of the grammar.

Nested and Inner Type Summary

Modifier and TypeClass and Description
public static class
Symbol.Alternative

public static class
Symbol.DefaultStartAction

public static class
Symbol.EnumAdjustAction

public static class
Symbol.EnumLabelsAction

public static class
Symbol.ErrorAction

public static class
Symbol.FieldAdjustAction

public static class
Symbol.FieldOrderAction

private static class
Symbol.Fixup

public static class
Symbol.ImplicitAction

public static class
Symbol.IntCheckAction

public static enum
Symbol.Kind

public static class
Symbol.Repeater

public static class
Symbol.ResolvingAction

protected static class
Symbol.Root

protected static class
Symbol.Sequence

public static class
Symbol.SkipAction

private static class
Symbol.Terminal

public static class
Symbol.UnionAdjustAction

public static class
Symbol.WriterUnionAction

Field Summary

Modifier and TypeField and Description
public static final Symbol
ARRAY_END

public static final Symbol
ARRAY_START

public static final Symbol
BOOLEAN

public static final Symbol
BYTES

public static final Symbol
DEFAULT_END_ACTION

public static final Symbol
DOUBLE

public static final Symbol
ENUM

public static final Symbol
FIELD_ACTION

public static final Symbol
FIELD_END

public static final Symbol
FIXED

public static final Symbol
FLOAT

public static final Symbol
INT

public static final Symbol
ITEM_END

public final Symbol.Kind
kind

public static final Symbol
LONG

public static final Symbol
MAP_END

public static final Symbol
MAP_KEY_MARKER

public static final Symbol
MAP_START

public static final Symbol
NULL

The terminal symbols for the grammar.

public final Symbol[]
production

The production for this symbol.

public static final Symbol
RECORD_END

public static final Symbol
RECORD_START

public static final Symbol
STRING

public static final Symbol
UNION

public static final Symbol
UNION_END

public static final Symbol
WRITER_UNION_ACTION

Constructor Summary

AccessConstructor and Description
protected
Symbol(Symbol.Kind kind)

Constructs a new symbol of the given kind kind.

protected
Symbol(Symbol.Kind kind, Symbol[] production)

Method Summary

Modifier and TypeMethod and Description
pack-priv static Symbol
alt(Symbol[] symbols, String[] labels)

A convenience method to construct a union.

private static void
copyFixups(List<Symbol.Fixup> fixups, Symbol[] out, int outPos, Symbol[] toCopy)

public static Symbol.DefaultStartAction
defaultStartAction(byte[] contents)

public static Symbol.EnumAdjustAction
enumAdjustAction(int rsymCount, Object[] adj)

public static Symbol.EnumLabelsAction
enumLabelsAction(List<String> symbols)

For JSON.

pack-priv static Symbol
error(String e)

A convenience method to construct an ErrorAction.

public static Symbol.FieldAdjustAction
fieldAdjustAction(int rindex, String fname, Set<String> aliases)

public static Symbol.FieldOrderAction
fieldOrderAction(Schema.Field[] fields)

public Symbol
flatten(Map<Symbol.Sequence, Symbol.Sequence> map, Map<Symbol.Sequence, List<Symbol.Fixup>> map2)

pack-priv static void
flatten(Symbol[]
The array of input symbols to flatten
in, int
The position where the input sub-array starts.
start, Symbol[]
The output that receives the flattened list of symbols. The output array should have sufficient space to receive the expanded sub-array of symbols.
out, int
The position where the output input sub-array starts.
skip, Map<Symbol.Sequence, Symbol.Sequence>
A map of symbols which have already been expanded. Useful for handling recursive definitions and for caching.
map, Map<Symbol.Sequence, List<Symbol.Fixup>>
A map to to store the list of fix-ups.
map2)

Flattens the given sub-array of symbols into an sub-array of symbols.

public int
flattenedSize()

protected static int

Returns:

The number of symbols that will be produced if one expands the given input.
flattenedSize(Symbol[]
The array of input symbols.
symbols, int
The index where the subarray starts.
start)

Returns the amount of space required to flatten the given sub-array of symbols.

public static boolean
hasErrors(Symbol symbol)

Returns true if the Parser contains any Error symbol, indicating that it may fail for some inputs.

private static boolean
hasErrors(Symbol symbol, Set<Symbol> visited)

private static boolean
hasErrors(Symbol root, Symbol[] symbols, Set<Symbol> visited)

public static Symbol.IntCheckAction
intCheckAction(int size)

pack-priv static Symbol
repeat(Symbol endSymbol, Symbol...
The symbols to repeat in the repeater.
symsToRepeat)

A convenience method to construct a repeater.

pack-priv static Symbol
resolve(Symbol
The writer symbol
w, Symbol
The reader symbol
r)

A convenience method to construct a ResolvingAction.

pack-priv static Symbol
root(Symbol... symbols)

A convenience method to construct a root symbol.

pack-priv static Symbol
seq(Symbol...
The constituent symbols of the sequence.
production)

A convenience method to construct a sequence.

public static Symbol.SkipAction
skipAction(Symbol symToSkip)

public static Symbol.UnionAdjustAction
unionAdjustAction(int rindex, Symbol sym)

public static Symbol.WriterUnionAction
writerUnionAction()

Inherited from java.lang.Object:
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