SAP ABAP Class CL_LL1_PARSER (Parser for LL(1) Grammars)

Hierarchy

☛ SAP_BASIS (Software Component) SAP Basis Component
   ⤷ BC-SRV-QUE (Application Component) SAP Query
     ⤷ SGEN (Package) ABAP Generation Tools

Properties

Class	CL_LL1_PARSER
Short Description	Parser for LL(1) Grammars
Super Class
Instantiability of a Class	2	Public
Final	☑

General Data

Message Class
Program status
Category	0
Package	SGEN	ABAP Generation Tools
Created	20000929	SAP
Last change	00000000	SAP
Shared Memory-enabled	☐
Fixed point arithmetic	☑
Unicode checks active	☑

Forward declarations

#	Type group / Object type	Type	Type Description
1	SPARS	Type group use (TYPE-POOLS tp)	Type group use (TYPE-POOLS tp)

Interfaces

Class CL_LL1_PARSER has no interface implemented.

Friends

Class CL_LL1_PARSER has no friend class.

Attributes

#	Attribute	Level	Visibility	Read only	Typing	Associated Type	Initial Value	Description	Created on
1	ABORT_PARSER	Instance attribute	Public	☑	Type reference (TYPE)	AQS_FLAG		X = Analysis Canceled	20001010
2	ACTUAL_TOKEN	Instance attribute	Private	☐	Type reference (TYPE)	STOKES		Current Token (for Error Messages)	20001009
3	NONTERMINALS	Instance attribute	Private	☐	Type reference (TYPE)	SPARS_SYMBOLS		Non-Terminals	20000929
4	RULECOUNTS	Instance attribute	Private	☐	Type reference (TYPE)	SPARS_RULECOUNTS		Number of Alternatives per Non-Terminal	20000929
5	RULES	Instance attribute	Private	☐	Type reference (TYPE)	SPARS_RULES		Rules	20000929
6	STACK	Instance attribute	Private	☐	Type reference (TYPE)	SPARS_STACK		Analysis Stack	20000929
7	TARGETS	Instance attribute	Private	☐	Type reference (TYPE)	SPARS_TARGETS		Target Symbol Set	20000929
8	TERMINALS	Instance attribute	Private	☐	Type reference (TYPE)	SPARS_SYMBOLS		Terminal Character	20000929
9	TOKENS	Instance attribute	Private	☐	Type reference (TYPE)	SPARS_TOKENS		Input Stream	20001009
10	TOPSYMBOL	Instance attribute	Private	☐	Type reference (TYPE)	SPARS_SYMBOL		TOP Symbol in Grammar	20000929

Methods

#	Method	Level	Visibility	Method type	Description	Created on
1	ABORT	Instance method	Public	Method	Cancel Parser	20001010
2	CHECK_SYMBOL	Instance method	Private	Method	Check Input Symbol	20000929
3	CONSTRUCTOR	Instance method	Public	Constructor	Constructor	20000929
4	IS_INPUT_EMPTY	Instance method	Private	Method	Test: Is Input Volume Empty?	20001009
5	IS_STACK_EMPTY	Instance method	Private	Method	Test: Is Symbol Stack Empty?	20001009
6	PARSE	Instance method	Public	Method	LL(1) Parser	20001009
7	POP	Instance method	Private	Method	Empty Symbol Stack	20000929
8	POP_INPUT_SYMBOL	Instance method	Private	Method	Read the next	20000929
9	PUSH	Instance method	Private	Method	Kellern Symbolkeller	20000929
10	READ_INPUT_SYMBOL	Instance method	Private	Method	Read Next Input Symbol	20000929
11	SCAN_INPUT	Instance method	Private	Method	Lexical Analysis of Input Character Sequence	20000929
12	SEARCH_RULE	Instance method	Private	Method	Look for Suitable Rule	20000929
13	SYNTAX_ERROR	Instance method	Private	Method	Trigger Syntax Error	20001009

Events

#	Event	Type	Visibility	Description	Created on
1	SEMANTIC	Instance Event (0)	Public (2)	Call Semantic Routine	20001009

Types

Class CL_LL1_PARSER has no local type.

Method Signatures

Method ABORT Signature

Method ABORT on class CL_LL1_PARSER has no parameter.
Method ABORT on class CL_LL1_PARSER has no exception.

Method CHECK_SYMBOL Signature

#	Type	Parameter	Pass Value	Optional	Typing Method	Associated Type	Default value	Description	Created on
1	Importing	INPUT_SYMBOL	Value transfer	☐	Type reference (TYPE)	SPARS_SYMBOL			20000929
2	Exporting	RETURN	Value transfer	☐	Type reference (TYPE)	I			20000929
3	Importing	STACK_SYMBOL	Value transfer	☐	Type reference (TYPE)	SPARS_SYMBOL			20000929

Method CHECK_SYMBOL on class CL_LL1_PARSER has no exception.

Method CONSTRUCTOR Signature

#	Type	Parameter	Pass Value	Optional	Typing Method	Associated Type	Default value	Description	Created on
1	Importing	GRAMMAR_SOURCE_FILENAME	Value transfer	☐	Type reference (TYPE)	SY-REPID	SPACE	Grammatikdatei (ABAP Include)	20000929
2	Importing	GRAMMAR_SOURCE_TABLE	Value transfer	☑	Type reference (TYPE)	SPARS_SOURCE		Grammatiksource als Tabelle	20000929

#	Exception	Resumable	Description	Created on
1	CX_LL1_PARSE_ERROR	☐	Fehler bei LL(1) Syntaxanalyse	20001009

Method IS_INPUT_EMPTY Signature

#	Type	Parameter	Pass Value	Optional	Typing Method	Associated Type	Default value	Description	Created on
1	Returning	RETURN	Value transfer	☐	Type reference (TYPE)	I			20001009

Method IS_INPUT_EMPTY on class CL_LL1_PARSER has no exception.

Method IS_STACK_EMPTY Signature

#	Type	Parameter	Pass Value	Optional	Typing Method	Associated Type	Default value	Description	Created on
1	Returning	RETURN	Value transfer	☐	Type reference (TYPE)	I			20001009

Method IS_STACK_EMPTY on class CL_LL1_PARSER has no exception.

Method PARSE Signature

#	Type	Parameter	Pass Value	Optional	Typing Method	Associated Type	Default value	Description	Created on
1	Importing	SOURCE	Value transfer	☐	Type reference (TYPE)	SPARS_SOURCE		zu übersetzender Text	20001009

#	Exception	Resumable	Description	Created on
1	CX_LL1_PARSE_ERROR	☐	Fehler bei LL(1) Syntaxanalyse	20001009

Method POP Signature

#	Type	Parameter	Pass Value	Optional	Typing Method	Associated Type	Default value	Description	Created on
1	Exporting	EVENT	Value transfer	☐	Type reference (TYPE)	SPARS_EVENT			20001009
2	Exporting	RETURN	Call by reference	☐	Type reference (TYPE)	I			20000929
3	Exporting	SYMBOL	Value transfer	☐	Type reference (TYPE)	SPARS_SYMBOL			20000929

Method POP on class CL_LL1_PARSER has no exception.

Method POP_INPUT_SYMBOL Signature

#	Type	Parameter	Pass Value	Optional	Typing Method	Associated Type	Default value	Description	Created on
1	Exporting	SYMBOL	Value transfer	☐	Type reference (TYPE)	SPARS_SYMBOL			20000929

Method POP_INPUT_SYMBOL on class CL_LL1_PARSER has no exception.

Method PUSH Signature

#	Type	Parameter	Pass Value	Optional	Typing Method	Associated Type	Default value	Description	Created on
1	Importing	EVENT	Value transfer	☐	Type reference (TYPE)	SPARS_EVENT			20001009
2	Importing	SYMBOL	Value transfer	☐	Type reference (TYPE)	SPARS_SYMBOL			20000929

Method PUSH on class CL_LL1_PARSER has no exception.

Method READ_INPUT_SYMBOL Signature

#	Type	Parameter	Pass Value	Optional	Typing Method	Associated Type	Default value	Description	Created on
1	Exporting	SYMBOL	Value transfer	☐	Type reference (TYPE)	SPARS_SYMBOL			20000929

Method READ_INPUT_SYMBOL on class CL_LL1_PARSER has no exception.

Method SCAN_INPUT Signature

#	Type	Parameter	Pass Value	Optional	Typing Method	Associated Type	Default value	Description	Created on
1	Returning	RETURN	Value transfer	☐	Type reference (TYPE)	I			20000929
2	Importing	SOURCE	Value transfer	☐	Type reference (TYPE)	SPARS_SOURCE			20000929

Method SCAN_INPUT on class CL_LL1_PARSER has no exception.

Method SEARCH_RULE Signature

#	Type	Parameter	Pass Value	Optional	Typing Method	Associated Type	Default value	Description	Created on
1	Importing	INPUT_SYMBOL	Value transfer	☐	Type reference (TYPE)	SPARS_SYMBOL			20000929
2	Exporting	RETURN	Value transfer	☐	Type reference (TYPE)	I			20000929
3	Exporting	RULE_NUMBER	Value transfer	☐	Type reference (TYPE)	SPARS_NUMBER			20000929
4	Importing	STACK_SYMBOL	Value transfer	☐	Type reference (TYPE)	SPARS_SYMBOL			20000929

Method SEARCH_RULE on class CL_LL1_PARSER has no exception.

Method SYNTAX_ERROR Signature

#	Type	Parameter	Pass Value	Optional	Typing Method	Associated Type	Default value	Description	Created on
1	Importing	STACK_SYMBOL	Value transfer	☑	Type reference (TYPE)	SPARS_SYMBOL			20001009

#	Exception	Resumable	Description	Created on
1	CX_LL1_PARSE_ERROR	☐	Fehler bei LL(1) Syntaxanalyse	20010122

Event Signatures

Event SEMANTIC Signature

#	Parameter	Type	Pass Value	Optional	Typing Method	Associated Type	Default value	Description	Created on
1	ACTUAL_TERMINAL	Exporting	Value transfer	☐	Type reference (TYPE)	SPARS_NAME		aktuelles Terminalzeichen	20001009
2	EVENT_ID	Exporting	Value transfer	☐	Type reference (TYPE)	SPARS_EVENT		Id der semantischen Routine	20001009

History

Last changed by/on	SAP	00000000
SAP Release Created in	50A