Appendix: Construct Index

A quick lookup from every keyword, operator, and notation in the grammar language to the chapter that documents it. Settings have their own complete listing in Settings Reference.

Lexical

Construct	Documented in
TOKEN / REGULAR_TOKEN, SKIP, MORE, UNPARSED / SPECIAL_TOKEN, CONTEXTUAL	Lexical Specification
<NAME : … > token, <NAME> reference, <EOF>	Lexical Specification
<#NAME> private regular expression	Lexical Specification
<?NAME> lazy token	Advanced Tokenization
character classes [ … ] and negation ~[ … ]	Lexical Specification
[IGNORE_CASE] modifier	Lexical Specification
lexical states < STATE > / < * > and the : NEXT_STATE switch	Lexical Specification
#ClassName token node class	Lexical Specification

Productions and expansions

Construct	Documented in
production Name : expansion ;	Productions and Expansions
terminals ("literal", <NAME>) and non-terminals	Productions and Expansions
choice |, grouping ( ), ( )*, ( )+, ( )?, [ ]	Productions and Expansions
embedded code actions { … }	Productions and Expansions
access modifiers, return types, parameters, throws	Productions and Expansions

Lookahead, predicates, and assertions

Construct	Documented in
SCAN and the => separator	Disambiguation
up-to-here markers =>|| and =>|+n	Disambiguation
contextual predicates \ … \ / / … / (with ~, ., ...)	Disambiguation
ASSERT, ENSURE	Disambiguation
FAIL	Disambiguation

Tree building

Construct	Documented in
node descriptors #Name, #void, #abstract, #interface	Tree Building
conditional node descriptor #Name( … )	Tree Building
cardinality constraint & … &	Tree Building

Code injection and composition

Construct	Documented in
INJECT	Code Injection
hooks TOKEN_HOOK, OPEN_NODE_HOOK, CLOSE_NODE_HOOK, RESET_TOKEN_HOOK	Code Injection
INCLUDE	The Grammar File
preprocessor #if / #elif / #else / #endif / #define / #undef	The Grammar File

Advanced tokenization

Construct	Documented in
ACTIVATE_TOKENS, DEACTIVATE_TOKENS, ACTIVE_TOKENS	Advanced Tokenization
UNCACHE_TOKENS	Advanced Tokenization

Fault tolerance

Construct	Documented in
tolerant markers ! and !->	Fault-Tolerant Parsing
ATTEMPT / RECOVER	Fault-Tolerant Parsing
RECOVER_TO	Fault-Tolerant Parsing