io.permazen.parse.expr

Class BaseExprParser

java.lang.Object

io.permazen.parse.expr.BaseExprParser

All Implemented Interfaces:

Parser<Node>

public class BaseExprParser
extends Object
implements Parser<Node>

Parses basic left-associative Java expressions such as auto-increment expressions, array access, field access, invocation, etc.

Includes these extensions:

• Access to Java bean methods via "property syntax", e.g., foo.name = "fred" means foo.setName("fred")
• Access database object fields via "property syntax" given an object ID, e.g., @fc21bf6d8930a215.name
• Array syntax for Map and List value access, e.g., mymap[key] = value means mymap.put(key, value), and mylist[12] = "abc" means mylist.set(12, "abc")

Field Summary

Fields

Modifier and Type	Field and Description
static BaseExprParser	INSTANCE

Constructor Summary

Constructors

Constructor and Description
BaseExprParser()

Method Summary

Modifier and Type	Method and Description
Node	parse(ParseSession session, ParseContext ctx, boolean complete) Parse text from the given parse context.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface io.permazen.parse.Parser

applyIdentifierScope

Field Detail

INSTANCE

public static final BaseExprParser INSTANCE

Constructor Detail

BaseExprParser

public BaseExprParser()

Method Detail

parse

public Node parse(ParseSession session,
                  ParseContext ctx,
                  boolean complete)

Description copied from interface: Parser

Parse text from the given parse context.

Generally speaking, this method may assume that any whitespace allowed before the item being parsed has already been skipped over (that's a matter for the containing parser).

Specified by:

parse in interface Parser<Node>

Parameters:

session - parse session

ctx - input to parse

complete - false if parse is "for real", true if only for tab completion calculation

Returns:

parsed value