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fgl.g4
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/*
* Originally written by Gregorio Momm Mon Jan 5, 2004 18:17
*
* Ported to Antlr4 by Tom Everett
*
*/
grammar fgl;
compilation_unit
: databaseDeclaration? globalDeclaration? typeDeclarations? mainBlock functionOrReportDefinitions? EOF
;
identifier
: IDENT
;
mainBlock
: eol? MAIN eol typeDeclarations? mainStatements? END MAIN eol
;
mainStatements
: (deferStatement | codeBlock | eol)+
;
deferStatement
: DEFER (INTERRUPT | QUIT) eol
;
functionOrReportDefinitions
: (reportDefinition | functionDefinition)+
;
returnStatement
: RETURN variableOrConstantList?
;
functionDefinition
: FUNCTION functionIdentifier parameterList? eol typeDeclarations codeBlock? END FUNCTION eol
;
parameterList
: LPAREN parameterGroup* RPAREN
;
parameterGroup
: identifier (COMMA identifier)*
;
globalDeclaration
: GLOBALS (string | eol typeDeclarations END GLOBALS) eol
;
typeDeclarations
: typeDeclaration+
;
typeDeclaration
: DEFINE variableDeclaration (COMMA variableDeclaration)*
;
variableDeclaration
: constantIdentifier (COMMA constantIdentifier)* type
| constantIdentifier type (COMMA constantIdentifier type)*
;
type
: typeIdentifier
| indirectType
| largeType
| structuredType
;
indirectType
: LIKE tableIdentifier DOT identifier
;
typeIdentifier
: charType
| numberType
| timeType
;
largeType
: TEXT
| BYTE
;
numberType
: (BIGINT | INTEGER | INT | SMALLINT | REAL | SMALLFLOAT)
| (DECIMAL | DEC | NUMERIC | MONEY) (LPAREN numericConstant (COMMA numericConstant)? RPAREN)?
| (FLOAT | DOUBLE) (LPAREN numericConstant RPAREN)?
;
charType
: (VARCHAR | NVARCHAR) LPAREN numericConstant (COMMA numericConstant)? RPAREN
| (CHAR | NCHAR | CHARACTER) (LPAREN numericConstant RPAREN)?
;
timeType
: DATE
| DATETIME datetimeQualifier
| INTERVAL intervalQualifier
;
datetimeQualifier
: YEAR TO yearQualifier
| MONTH TO monthQualifier
| DAY TO dayQualifier
| HOUR TO hourQualifier
| MINUTE TO minuteQualifier
| SECOND TO secondQualifier
| FRACTION TO fractionQualifier
;
intervalQualifier
: YEAR (LPAREN numericConstant RPAREN)? TO yearQualifier
| MONTH (LPAREN numericConstant RPAREN)? TO monthQualifier
| DAY (LPAREN numericConstant RPAREN)? TO dayQualifier
| HOUR (LPAREN numericConstant RPAREN)? TO hourQualifier
| MINUTE (LPAREN numericConstant RPAREN)? TO minuteQualifier
| SECOND (LPAREN numericConstant RPAREN)? TO secondQualifier
| FRACTION TO fractionQualifier
;
unitType
: yearQualifier
;
yearQualifier
: YEAR
| monthQualifier
;
monthQualifier
: MONTH
| dayQualifier
;
dayQualifier
: DAY
| hourQualifier
;
hourQualifier
: HOUR
| minuteQualifier
;
minuteQualifier
: MINUTE
| secondQualifier
;
secondQualifier
: SECOND
| fractionQualifier
;
fractionQualifier
: FRACTION (LPAREN numericConstant RPAREN)?
;
structuredType
: recordType
| arrayType
| dynArrayType
;
recordType
: RECORD (eol (variableDeclaration (COMMA variableDeclaration)*) END RECORD | (LIKE tableIdentifier DOT STAR))
;
arrayIndexer
: LBRACK numericConstant (COMMA numericConstant | COMMA numericConstant COMMA numericConstant)? RBRACK
;
arrayType
: ARRAY arrayIndexer OF (recordType | typeIdentifier | largeType)
;
dynArrayType
: DYNAMIC ARRAY WITH numericConstant DIMENSIONS OF (recordType | typeIdentifier)
;
string
: STRING_LITERAL
;
statement
: (label COLON)? unlabelledStatement
;
codeBlock
: (statement | databaseDeclaration)+
;
label
: identifier
;
unlabelledStatement
: simpleStatement
| structuredStatement
;
simpleStatement
: assignmentStatement
| procedureStatement
| sqlStatements SEMI?
| otherFGLStatement
| menuInsideStatement
| constructInsideStatement
| displayInsideStatement
| inputInsideStatement
;
runStatement
: RUN (variable | string) (IN FORM MODE | IN LINE MODE)? (WITHOUT WAITING | RETURNING variable)?
;
assignmentStatement
: LET variable EQUAL expression (COMMA expression)*
;
procedureStatement
: CALL procedureIdentifier (LPAREN (actualParameter (COMMA actualParameter)*)? RPAREN)? (RETURNING variable (COMMA variable)*)?
;
procedureIdentifier
: functionIdentifier
;
actualParameter
: STAR
| expression
;
gotoStatement
: GOTO COLON? label eol
;
condition
: (TRUE | FALSE)
| logicalTerm (OR logicalTerm)*
;
logicalTerm
: logicalFactor (AND logicalFactor)*
;
logicalFactor
:
// Added "prior" to a comparison expression to support use of a
// condition in a connect_clause. (sqlExpression NOT? IN) sqlExpression NOT? IN expressionSet
| (sqlExpression NOT? LIKE) sqlExpression NOT? LIKE sqlExpression (ESC QUOTED_STRING)?
| (sqlExpression NOT? BETWEEN) sqlExpression NOT? BETWEEN sqlExpression AND sqlExpression
| (sqlExpression IS NOT? NULL) sqlExpression IS NOT? NULL
| quantifiedFactor quantifiedFactor
| (NOT condition) NOT condition
| LPAREN condition RPAREN
| sqlExpression relationalOperator sqlExpression
;
quantifiedFactor
: (sqlExpression relationalOperator (ALL | ANY)? subquery) sqlExpression relationalOperator (ALL | ANY)? subquery
| (NOT? EXISTS subquery) NOT? EXISTS subquery
| subquery
;
expressionSet
: sqlExpression sqlExpression
| subquery
;
subquery
: LPAREN sqlSelectStatement RPAREN
;
sqlExpression
: sqlTerm ((PLUS | MINUS) sqlTerm)*
;
sqlAlias
: AS? identifier
;
sqlTerm
: sqlFactor ((sqlMultiply | DIV | SLASH) sqlFactor)*
;
sqlMultiply
: STAR
;
sqlFactor
: sqlFactor2 (DOUBLEVERTBAR sqlFactor2)*
;
sqlFactor2
: (sqlVariable (UNITS unitType)?) sqlVariable (UNITS unitType)?
| (sqlLiteral (UNITS unitType)?) sqlLiteral (UNITS unitType)?
| (groupFunction LPAREN (STAR | ALL | DISTINCT)? (sqlExpression (COMMA sqlExpression)*)? RPAREN) groupFunction LPAREN (STAR | ALL | DISTINCT)? (sqlExpression (COMMA sqlExpression)*)? RPAREN
| (sqlFunction (LPAREN sqlExpression (COMMA sqlExpression)* RPAREN)) sqlFunction (LPAREN sqlExpression (COMMA sqlExpression)* RPAREN)
| ((PLUS | MINUS) sqlExpression) (PLUS | MINUS) sqlExpression
| (LPAREN sqlExpression RPAREN) LPAREN sqlExpression RPAREN
| sqlExpressionList
;
sqlExpressionList
: LPAREN sqlExpression (COMMA sqlExpression)+ RPAREN
;
sqlLiteral
: unsignedConstant | string | NULL | FALSE | TRUE
;
sqlVariable
: columnsTableId columnsTableId
;
sqlFunction
: numberFunction
| charFunction
| dateFunction
| otherFunction
;
dateFunction
: YEAR
| DATE
| DAY
| MONTH
;
numberFunction
: MOD
;
charFunction
: LENGTH
;
groupFunction
: AVG
| COUNT
| MAX
| MIN
| SUM
;
otherFunction
: (DECODE | NVL)
| constantIdentifier
;
// This is not being used currently, but might be useful at some point.
sqlPseudoColumn
: USER
;
relationalOperator
: EQUAL | NOT_EQUAL | LE | LT | GE | GT | LIKE
| NOT? MATCHES
;
ifCondition
: TRUE | FALSE
| ifCondition2 (relationalOperator ifCondition2)*
;
ifCondition2
: ifLogicalTerm (OR ifLogicalTerm)*
;
ifLogicalTerm
: ifLogicalFactor (AND ifLogicalFactor)*
;
expression
: simpleExpression (CLIPPED | USING string)*
;
ifLogicalFactor
:
// Added "prior" to a comparison expression to support use of a
// condition in a connect_clause. (simpleExpression IS NOT? NULL) simpleExpression IS NOT? NULL
| (NOT ifCondition) NOT ifCondition
| LPAREN ifCondition RPAREN
| simpleExpression simpleExpression
;
simpleExpression
: sign? term (addingOperator term)*
;
addingOperator
: PLUS
| MINUS
;
term
: factor (multiplyingOperator factor)*
;
multiplyingOperator
: STAR
| SLASH
| DIV
| MOD
;
factor
: (GROUP? functionDesignator | variable | constant | LPAREN expression RPAREN | NOT factor) (UNITS unitType)?
;
functionDesignator
: functionIdentifier (LPAREN (actualParameter (COMMA actualParameter)*)? RPAREN)?
;
functionIdentifier
: (DAY | YEAR | MONTH | TODAY | WEEKDAY | MDY | COLUMN | SUM | COUNT | AVG | MIN | MAX | EXTEND | DATE | TIME | INFIELD | PREPARE)
| constantIdentifier
;
unsignedConstant
: unsignedNumber
| string
| constantIdentifier
| NULL
;
constant
: numericConstant
| constantIdentifier
| sign identifier
| string
;
numericConstant
: unsignedNumber
| sign unsignedNumber
;
variable
: entireVariable
| componentVariable
;
entireVariable
: variableIdentifier
;
variableIdentifier
: constantIdentifier
;
indexingVariable
: LBRACK expression (COMMA expression)* RBRACK
;
/*
thruNotation
:
( (THROUGH |THRU) (SAME DOT)? identifier )?
;
*/
componentVariable
: (recordVariable indexingVariable?) ((DOT STAR) | (DOT componentVariable ((THROUGH | THRU) componentVariable)?))?
;
recordVariable
: constantIdentifier
;
fieldIdentifier
: constantIdentifier
;
structuredStatement
: conditionalStatement
| repetetiveStatement
;
conditionalStatement
: ifStatement
| caseStatement
;
ifStatement
: IF ifCondition THEN codeBlock? (ELSE codeBlock?)? END IF
;
repetetiveStatement
: whileStatement
| forEachStatement
| forStatement
;
whileStatement
: WHILE ifCondition codeBlock? END WHILE
;
forStatement
: FOR controlVariable EQUAL forList (STEP numericConstant)? eol codeBlock? END FOR eol
;
forList
: initialValue TO finalValue
;
controlVariable
: identifier
;
initialValue
: expression
;
finalValue
: expression
;
forEachStatement
: FOREACH identifier (USING variableList)? (INTO variableList)? (WITH REOPTIMIZATION)? eol codeBlock? END FOREACH eol
;
variableList
: variable (COMMA variable)*
;
variableOrConstantList
: expression (COMMA expression)*
;
caseStatement
: CASE expression (WHEN expression codeBlock?)* (OTHERWISE codeBlock?)? END CASE
| CASE (WHEN ifCondition codeBlock)* (OTHERWISE codeBlock)? END CASE
;
otherFGLStatement
: otherProgramFlowStatement
| otherStorageStatement
| reportStatement
| screenStatement
;
otherProgramFlowStatement
: runStatement
| gotoStatement
| SLEEP expression
| exitStatements
| continueStatements
| returnStatement
;
exitTypes
: FOREACH
| FOR
| CASE
| CONSTRUCT
| DISPLAY
| INPUT
| MENU
| REPORT
| WHILE
;
exitStatements
: EXIT exitTypes
| EXIT PROGRAM (LPAREN expression RPAREN | expression)?
;
continueStatements
: CONTINUE exitTypes eol
;
otherStorageStatement
: ALLOCATE ARRAY identifier arrayIndexer
| LOCATE variableList IN (MEMORY | FILE (variable | string)?)
| DEALLOCATE ARRAY identifier
| RESIZE ARRAY identifier arrayIndexer
| FREE variable (COMMA variable)*
| INITIALIZE variable (COMMA variable)* (TO NULL | LIKE expression (COMMA expression)*)
| VALIDATE variable (COMMA variable)* LIKE expression (COMMA expression)*
;
printExpressionItem
: COLUMN expression
| (PAGENO | LINENO)
| BYTE variable
| TEXT variable
| expression (SPACE | SPACES)? (WORDWRAP (RIGHT MARGIN numericConstant)?)?
;
printExpressionList
: printExpressionItem (COMMA printExpressionItem)*
;
reportStatement
: START REPORT constantIdentifier (TO (expression | PIPE expression | PRINTER))? (WITH ((LEFT MARGIN numericConstant) | (RIGHT MARGIN numericConstant) | (TOP MARGIN numericConstant) | (BOTTOM MARGIN numericConstant) | (PAGE LENGTH numericConstant) | (TOP OF PAGE string))*)?
| TERMINATE REPORT constantIdentifier
| FINISH REPORT constantIdentifier
| PAUSE string?
| NEED expression LINES
| PRINT (printExpressionList? SEMI? | FILE string)?
| SKIP2 (expression (LINE | LINES) | TO TOP OF PAGE)
| OUTPUT TO REPORT constantIdentifier LPAREN (expression (COMMA expression)*)? RPAREN
;
fieldName
: ((identifier (LBRACK numericConstant RBRACK)?) DOT)? identifier
| (identifier (LBRACK numericConstant RBRACK)?) DOT (STAR | identifier thruNotation?)
;
thruNotation
: (THROUGH | THRU) (SAME DOT)? identifier
;
fieldList
: expression (COMMA expression)*
;
keyList
: expression (COMMA expression)*
;
constructEvents
: BEFORE CONSTRUCT
| AFTER CONSTRUCT
| BEFORE FIELD fieldList
| AFTER FIELD fieldList
| ON KEY LPAREN keyList RPAREN
;
constructInsideStatement
: NEXT FIELD (fieldName | NEXT | PREVIOUS) eol
| CONTINUE CONSTRUCT eol
| EXIT CONSTRUCT eol
;
specialAttribute
: REVERSE
| BLINK
| UNDERLINE
;
attribute
: (BLACK | BLUE | CYAN | GREEN | MAGENTA | RED | WHITE | YELLOW | BOLD | DIM | NORMAL | INVISIBLE)? specialAttribute (COMMA specialAttribute)*
;
attributeList
: (ATTRIBUTE | ATTRIBUTES) LPAREN attribute RPAREN
;
constructGroupStatement
: constructEvents codeBlock+
;
constructStatement
: CONSTRUCT (BY NAME variable ON columnsList | variable ON columnsList FROM fieldList) attributeList? (HELP numericConstant)? (constructGroupStatement+ END CONSTRUCT)?
;
displayArrayStatement
: DISPLAY ARRAY expression TO expression attributeList? displayEvents* (END DISPLAY)?
;
displayInsideStatement
: CONTINUE DISPLAY
| EXIT DISPLAY
;
displayEvents
: ON KEY LPAREN keyList RPAREN codeBlock+
;
displayStatement
: DISPLAY (BY NAME (expression (COMMA expression)*) | (expression (COMMA expression)*) (TO fieldList | AT expression COMMA expression)?) attributeList? eol
;
errorStatement
: ERROR expression (COMMA expression)* attributeList?
;
messageStatement
: MESSAGE expression (COMMA expression)* attributeList?
;
promptStatement
: PROMPT expression (COMMA expression)* attributeList? FOR CHAR? variable (HELP numericConstant)? attributeList? ((ON KEY LPAREN keyList RPAREN codeBlock?)* END PROMPT)?
;
inputEvents
: (BEFORE | AFTER) (INPUT | ROW | INSERT | DELETE)
| BEFORE FIELD fieldList
| AFTER FIELD fieldList
| ON KEY LPAREN keyList RPAREN
;
inputInsideStatement
: NEXT FIELD (fieldName | (NEXT | PREVIOUS))
| (CONTINUE INPUT | EXIT INPUT)
;
inputGroupStatement
: inputEvents codeBlock*
;
inputStatement
: INPUT (BY NAME expression (COMMA expression)* (WITHOUT DEFAULTS)? | expression (COMMA expression)* (WITHOUT DEFAULTS)? FROM fieldList) attributeList? (HELP numericConstant)? (inputGroupStatement+ END INPUT)?
;
inputArrayStatement
: INPUT ARRAY expression (WITHOUT DEFAULTS)? FROM expression (COMMA expression)* (HELP numericConstant)? attributeList? (inputGroupStatement+ END INPUT)?
;
menuEvents
: BEFORE MENU
| COMMAND ((KEY LPAREN keyList RPAREN)? expression expression? (HELP numericConstant)?)
;
menuInsideStatement
: NEXT OPTION (expression | ALL) (COMMA expression)*
| SHOW OPTION (expression | ALL) (COMMA expression)*
| HIDE OPTION (expression | ALL) (COMMA expression)*
| CONTINUE MENU
| EXIT MENU
;
menuGroupStatement
: menuEvents codeBlock?
;
menuStatement
: MENU expression menuGroupStatement* END MENU
;
reservedLinePosition
: FIRST (PLUS numericConstant)?
| numericConstant
| LAST (MINUS numericConstant)?
;
specialWindowAttribute
: (BLACK | BLUE | CYAN | GREEN | MAGENTA | RED | WHITE | YELLOW | BOLD | DIM | NORMAL | INVISIBLE)
| REVERSE
| BORDER
| (PROMPT | FORM | MENU | MESSAGE) LINE reservedLinePosition
| COMMENT LINE (reservedLinePosition | OFF)
;
windowAttribute
: specialWindowAttribute (COMMA specialWindowAttribute)*
;
windowAttributeList
: (ATTRIBUTE | ATTRIBUTES) LPAREN windowAttribute RPAREN
;
optionStatement
: (MESSAGE LINE expression | PROMPT LINE expression | MENU LINE expression | COMMENT LINE expression | ERROR LINE expression | FORM LINE expression | INPUT (WRAP | NO WRAP) | INSERT KEY expression | DELETE KEY expression | NEXT KEY expression | PREVIOUS KEY expression | ACCEPT KEY expression | HELP FILE expression | HELP KEY expression | INPUT attributeList | DISPLAY attributeList | SQL INTERRUPT (ON | OFF) | FIELD ORDER (CONSTRAINED | UNCONSTRAINED))
;
optionsStatement
: OPTIONS optionStatement (COMMA optionStatement)*
;
screenStatement
: CLEAR (FORM | WINDOW identifier | WINDOW? SCREEN | fieldList)
| CLOSE WINDOW identifier eol
| CLOSE FORM identifier eol
| constructStatement
| CURRENT WINDOW IS (SCREEN | identifier) eol
| displayStatement
| displayArrayStatement
| DISPLAY FORM identifier attributeList? eol
| errorStatement
| messageStatement
| promptStatement
| inputStatement
| inputArrayStatement
| menuStatement
| OPEN FORM expression FROM expression
| OPEN WINDOW expression AT expression COMMA expression (WITH FORM expression | WITH expression ROWS COMMA expression COLUMNS) windowAttributeList?
| optionsStatement
| SCROLL fieldList (COMMA fieldList)* (UP | DOWN) (BY numericConstant)?
;
sqlStatements
: cursorManipulationStatement
| dataDefinitionStatement
| dataManipulationStatement
| dynamicManagementStatement
| queryOptimizationStatement
| dataIntegrityStatement
| clientServerStatement
;
cursorManipulationStatement
: CLOSE cursorName eol
| DECLARE cursorName (CURSOR (WITH HOLD)? FOR (sqlSelectStatement (FOR UPDATE (OF columnsList)?)? | sqlInsertStatement | statementId) | SCROLL CURSOR (WITH HOLD)? FOR (sqlSelectStatement | statementId))
| FETCH (NEXT | (PREVIOUS | PRIOR) | FIRST | LAST | CURRENT | RELATIVE expression | ABSOLUTE expression)? cursorName (INTO variableList)?
| FLUSH cursorName eol
| OPEN cursorName (USING variableList)?
| PUT cursorName (FROM variableOrConstantList)?
;
columnsList
: columnsTableId (COMMA columnsTableId)*
;
statementId
: constantIdentifier
;
cursorName
: identifier
;
dataType
: type
;
columnItem
: constantIdentifier (dataType | (BYTE | TEXT) (IN (TABLE | constantIdentifier))?) (NOT NULL)?
| UNIQUE LPAREN (constantIdentifier (COMMA constantIdentifier)*)? RPAREN (CONSTRAINT constantIdentifier)?
;
dataDefinitionStatement
: DROP TABLE constantIdentifier
| CREATE TEMP? TABLE constantIdentifier LPAREN columnItem (COMMA columnItem)* RPAREN (WITH NO LOG)? (IN constantIdentifier)? (EXTENT SIZE numericConstant)? (NEXT SIZE numericConstant)? (LOCK MODE LPAREN (PAGE | ROW) RPAREN)?
| CREATE UNIQUE? CLUSTER? INDEX constantIdentifier ON constantIdentifier LPAREN constantIdentifier (ASC | DESC)? (COMMA constantIdentifier (ASC | DESC)?)* RPAREN
| DROP INDEX constantIdentifier
;
dataManipulationStatement
: sqlInsertStatement
| sqlDeleteStatement
| sqlSelectStatement
| sqlUpdateStatement
| sqlLoadStatement
| sqlUnLoadStatement
;
sqlSelectStatement
: mainSelectStatement
;
columnsTableId
: STAR
| (tableIdentifier indexingVariable?) (DOT STAR | DOT columnsTableId)?
;
selectList
: (sqlExpression sqlAlias? (COMMA sqlExpression sqlAlias?)*)
;
headSelectStatement
: SELECT (ALL | (DISTINCT | UNIQUE))? selectList
;
tableQualifier
: constantIdentifier COLON
| constantIdentifier ATSYMBOL constantIdentifier COLON
| string
;
tableIdentifier
: tableQualifier? constantIdentifier
;
fromTable
: OUTER? tableIdentifier sqlAlias?
;
tableExpression
: simpleSelectStatement
;
fromSelectStatement
: FROM (fromTable | LPAREN tableExpression RPAREN sqlAlias?) (COMMA (fromTable | LPAREN tableExpression RPAREN sqlAlias?))*
;
aliasName
: identifier
;
mainSelectStatement
: headSelectStatement (INTO variableList)? fromSelectStatement whereStatement? groupByStatement? havingStatement? unionSelectStatement? orderbyStatement? (INTO TEMP identifier)? (WITH NO LOG)?
;
unionSelectStatement
: (UNION ALL? simpleSelectStatement)
;
simpleSelectStatement
: headSelectStatement fromSelectStatement whereStatement? groupByStatement? havingStatement? unionSelectStatement?
;
whereStatement
: WHERE condition
;
groupByStatement
: GROUP BY variableOrConstantList
;
havingStatement
: HAVING condition
;
orderbyColumn
: expression (ASC | DESC)?
;
orderbyStatement
: ORDER BY orderbyColumn (COMMA orderbyColumn)*
;
sqlLoadStatement
: LOAD FROM (variable | string) (DELIMITER (variable | string))? (INSERT INTO tableIdentifier (LPAREN columnsList RPAREN)? | sqlInsertStatement) eol
;
sqlUnLoadStatement
: UNLOAD TO (variable | string) (DELIMITER (variable | string))? sqlSelectStatement eol
;
sqlInsertStatement
: INSERT INTO tableIdentifier (LPAREN columnsList RPAREN)? (VALUES LPAREN expression (COMMA expression)* RPAREN | simpleSelectStatement)
;
sqlUpdateStatement
: UPDATE tableIdentifier SET ((columnsTableId EQUAL expression (COMMA columnsTableId EQUAL expression)*) | ((LPAREN columnsList RPAREN | (aliasName DOT)? STAR) EQUAL (LPAREN expression (COMMA expression)* RPAREN | (aliasName DOT)? STAR))) (WHERE (condition | CURRENT OF cursorName))?
;
sqlDeleteStatement
: DELETE FROM tableIdentifier (WHERE (condition | CURRENT OF cursorName))? eol
;
actualParameterList
: actualParameter (COMMA actualParameter)*
;
dynamicManagementStatement
: PREPARE cursorName FROM expression
| EXECUTE cursorName (USING variableList)?
| FREE (cursorName | statementId)
| LOCK TABLE expression IN (SHARE | EXCLUSIVE) MODE
;
queryOptimizationStatement
: UPDATE STATISTICS (FOR TABLE tableIdentifier)?
| SET LOCK MODE TO (WAIT SECONDS? | NOT WAIT)
| SET EXPLAIN (ON | OFF)
| SET ISOLATION TO (CURSOR STABILITY | (DIRTY | COMMITTED | REPEATABLE) READ)
| SET BUFFERED? LOG
;
databaseDeclaration
: DATABASE (constantIdentifier (ATSYMBOL constantIdentifier)?) EXCLUSIVE? SEMI?
;
clientServerStatement
: CLOSE DATABASE
;
dataIntegrityStatement
: wheneverStatement
| BEGIN WORK
| COMMIT WORK
| ROLLBACK WORK
;
wheneverStatement
: WHENEVER wheneverType wheneverFlow eol
;
wheneverType
: NOT FOUND
| ANY? (SQLERROR | ERROR)
| (SQLWARNING | WARNING)
;
wheneverFlow
: (CONTINUE | STOP)
| CALL identifier
| (GO TO | GOTO) COLON? identifier
;
reportDefinition
: REPORT identifier parameterList? typeDeclarations? outputReport? (ORDER EXTERNAL? BY variableList)? formatReport? END REPORT
;
outputReport
: OUTPUT (REPORT TO (string | PIPE string | PRINTER))? ((LEFT MARGIN numericConstant) | (RIGHT MARGIN numericConstant) | (TOP MARGIN numericConstant) | (BOTTOM MARGIN numericConstant) | (PAGE LENGTH numericConstant) | (TOP OF PAGE string))*
;
formatReport
: FORMAT (EVERY ROW | ((FIRST? PAGE HEADER | PAGE TRAILER | ON (EVERY ROW | LAST ROW) | (BEFORE | AFTER) GROUP OF variable) codeBlock)+)
;