PHP Objects, Patterns and Practice (3rd edition)

■ INDEX

programming to, 108
representing in UML, 111
interpret(), 191, 193–194, 485
Interpreter pattern
add(), 478
BooleanAndExpression class, 195
BooleanOrExpression class, 195
building a tree of Parser objects, 474
char_no(), 473
CharacterParse class, code listing, 477
class diagram, 197
CollectionParse class, code listing, 477
compile(), 484
composite (collection) parsers, 476
composite parsers and EBNF notation, 482
Context class, code listing, 472
discard(), 476
doInterpret(), 194
doScan(), 476–478
eatWhiteSpace(), 477
EqualsExpression class, 195
evaluate(), 484–485
Expression class, 191
expression(), 484
Extended Backus-Naur Form (EBNF), 191
getKey(), 192–194
getState(), 472
getting from a parse tree to an interpreter,
485
getTypeString(), 473
handleMatch(), 476, 485
internals for invoking, 196
interpret(), 191, 193–194, 485
Interpreter classes, class diagram, 191
InterpreterContext class, 191, 193
invokeHandler(), 476
isSpaceChar(), 472
isWordChar(), 472
lack of a parser in, 467
MarkLogic grammar elements, table of, 190
MarkLogic interpreter, 467
MarkParse class, code listing, 482
Metsker, Steven, 467
minilanguages, 189–190
next(), 477
nextToken(), 472–473, 477

offering users a Domain Specific Language

(DSL), 189

OperatorExpression class, 194

overview of, 189

Parser class, code listing, 474

Parser classes, illustration of, 481

parsing a statement, requirements for, 467

push(), 476

Reader interface, code listing, 473

replace(), 193

scan(), 476–478

Scanner class, code listing, 467

ScannerState class, 472

SequenceParse class, code listing, 477

setHandler(), 476, 485

setState(), 472, 478

setValue(), 194

StringReader class, code listing, 473

summary of, 197

term(), 476, 478

terminal parsers, 476

token(), 473

tokens, 467

trigger(), 477–478

variable(), 485

VariableExpression class, code listing, 193

VariableHandler class, 485

InterpreterContext class, 191, 193

invoke(), 96

invokeHandler(), 476

is_a(), 83

is_array(), 393

is_callable(), 67–68, 84

is_subclass_of(), 85

isAbstract(), 90

isError(), 331

isInstantiable(), 90

isPassedByReference(), 94

__isset(), 59

isSpaceChar(), 472

isSubclassOf(), 95

isUserDefined(), 90

isWordChar(), 472

Iterator interface

code listing, 281

table of methods, 280