问题
I have a grammar file Bookings.g and the file I try to parse with that grammar.
Why am I getting these errors?
line 1:12 extraneous input '"pcc"' expecting String line 3:0 mismatched input '}' expecting ScenarioPart1 line 7:13 mismatched input '"R"' expecting String line 9:8 mismatched input '"Doll"' expecting String line 15:8 mismatched input '"Train"' expecting String line 21:8 mismatched input '"Ball"' expecting String line 34:0 missing EOF at '}'
Grammar
grammar Bookings;
@members
{
private DefaultBookingsFile bookingsFile;
public DefaultBookingsFile getBookingsFile()
{
return this.bookingsFile;
}
}
@header {
package at.silverstrike.pcc.impl.tj3bookingsparser.grammar;
import org.slf4j.Logger;
}
@lexer::header {
package at.silverstrike.pcc.impl.tj3bookingsparser.grammar;
}
bookingsFile
:
{
this.bookingsFile = new DefaultBookingsFile();
}
header
projectIds
resourceDeclaration
task+
(
suppTask=supplementTask { this.bookingsFile.addSupplementStatement( $suppTask.suppStmt ); }
)*
supplementResource*
EOF
;
header
:
Project Prj String String DateTimeWithTimeZone Hyphen DateTimeWithTimeZone OpenParen TimeZone Utc
ScenarioPart1 OpenParen ScenarioPart2 CloseParen
CloseParen
;
ScenarioPart1
:
'scenario plan "Plan"'
;
ScenarioPart2
:
'active yes'
;
TimeZone
:
'timezone'
;
Utc
:
'"'A+'"'
;
projectIds:
Projectids Prj
;
resourceDeclaration
: Resource Identifier String
;
task
:
Task Identifier String OpenParen
(task)*
(Start DateTimeWithTimeZone
End DateTimeWithTimeZone
Scheduling Asap
Scheduled)*
CloseParen
;
/* (Complete FloatingPointNumber)* */
supplementTask returns [DefaultSupplementStatement suppStmt]
:
{
suppStmt = new DefaultSupplementStatement();
}
Supplement Task taskId=Identifier {suppStmt.setTaskId($taskId.text); }
OpenParen
(
bStmt=booking {suppStmt.addBookingStatement( $bStmt.stmt ); }
)*
Priority IntegerNumber
CloseParen
;
supplementResource
:
Supplement Resource Identifier OpenParen
workinghours+
CloseParen
;
workinghours
:
Workinghours DayOfWeek (Off|workingIntervals)
;
Workinghours
: 'workinghours'
;
workingIntervals
:
workingInterval (Comma workingInterval)*
;
workingInterval
: Time Hyphen Time
;
Time
: IntegerNumber Colon IntegerNumber
;
Colon
:
':'
;
Comma
:
','
;
DayOfWeek
: 'mon'
| 'tue'
| 'wed'
| 'thu'
| 'fri'
| 'sat'
| 'sun'
;
Off
:
'off'
;
booking returns [DefaultBookingStatement stmt]
:
{
stmt = new DefaultBookingStatement();
}
Booking resource=Identifier { stmt.setResource($resource.text); }
bt1=bookingTime { stmt.addIndBooking($bt1.indBooking); }
(Comma
bt2=bookingTime { stmt.addIndBooking($bt2.indBooking); }
)*
(OpenParen
overtime
CloseParen)
;
bookingTime returns [DefaultIndBooking indBooking]
:
startTime=DateTimeWithTimeZone
Plus
bookingDuration=FloatingPointNumberDuration
{
$indBooking = new DefaultIndBooking($startTime.text, $bookingDuration.text);
}
;
Booking
:
'booking'
;
Plus
:
'+'
;
duration
:
FloatingPointNumber 'h'
;
overtime
:
Overtime IntegerNumber
;
Overtime
:
'overtime'
;
Supplement
:
'supplement'
;
Priority
:
'priority'
;
Complete
:
'complete'
;
Start
:
'start'
;
End
:
'end'
;
Scheduling
:
'scheduling'
;
Asap
:
'asap'
;
Scheduled
:
'scheduled'
;
Task
:
'task'
;
Resource
:
'resource'
;
Projectids
:
'projectids'
;
Project
: 'project'
;
Prj
: 'prj'
;
OpenParen
: '{'
;
CloseParen
: '}'
;
Hyphen
: '-'
;
FloatingPointNumber
: D+'.'D+
;
FloatingPointNumberDuration
: D+ P D+ H
;
IntegerNumber
: D+
;
Identifier
: (D|A|P)+;
String
: '"' ~'"'* '"'
;
DateTimeWithTimeZone
: D D D D '-' D D '-' D D '-' D D ':' D D '-+' D D D D
;
fragment
D
: '0'..'9'
;
fragment
A
: 'A'..'Z'
| 'a'..'z'
;
fragment
P
: '.'
;
fragment
H
: 'h'
;
Space
: (' ' | '\t' | '\r'? '\n'){$channel=HIDDEN;}
;
File to parse
project prj "pcc" "1.0" 2011-09-04-00:00-+0000 - 2011-10-04-10:00-+0000 {
timezone "UTC"
scenario plan "Plan" {
active yes
}
}
projectids prj
resource R62 "R"
task T1 "Doll" {
start 2011-09-05-14:00-+0000
end 2011-09-05-16:00-+0000
scheduling asap
scheduled
}
task T2 "Train" {
start 2011-09-05-11:00-+0000
end 2011-09-05-14:00-+0000
scheduling asap
scheduled
}
task T4 "Ball" {
task T3 "Big ball" {
start 2011-09-05-09:00-+0000
end 2011-09-05-11:00-+0000
scheduling asap
scheduled
}
task T5 "Small ball" {
start 2011-09-05-16:00-+0000
end 2011-09-05-17:00-+0000
scheduling asap
scheduled
}
}
supplement task T1 {
booking R62 2011-09-05-14:00-+0000 + 2.0h { overtime 2 }
priority 997
projectid prj
}
supplement task T2 {
booking R62 2011-09-05-11:00-+0000 + 3.0h { overtime 2 }
priority 998
projectid prj
}
supplement task T4 {
priority 0
projectid prj
}
supplement task T4.T3 {
booking R62 2011-09-05-09:00-+0000 + 2.0h { overtime 2 }
priority 1000
projectid prj
}
supplement task T4.T5 {
booking R62 2011-09-05-16:00-+0000 + 1.0h { overtime 2 }
priority 996
projectid prj
}
supplement resource R62 {
workinghours sun off
workinghours mon 9:00 - 17:00
workinghours tue 9:00 - 17:00
workinghours wed 9:00 - 17:00
workinghours thu 9:00 - 17:00
workinghours fri 9:00 - 17:00
workinghours sat off
}
UPD, 05.09.2011 00:24 CEST: Here's the corrected grammar file that works.
grammar Bookings;
@members
{
private DefaultBookingsFile bookingsFile;
public DefaultBookingsFile getBookingsFile()
{
return this.bookingsFile;
}
}
@header {
package at.silverstrike.pcc.impl.tj3bookingsparser.grammar;
import org.slf4j.Logger;
}
@lexer::header {
package at.silverstrike.pcc.impl.tj3bookingsparser.grammar;
}
bookingsFile
:
{
this.bookingsFile = new DefaultBookingsFile();
}
header
projectIds
resourceDeclaration
task+
(
suppTask=supplementTask { this.bookingsFile.addSupplementStatement( $suppTask.suppStmt ); }
)*
supplementResource*
EOF
;
header
:
Project Prj String String DateTimeWithTimeZone Hyphen DateTimeWithTimeZone OpenParen TimeZone String
ScenarioPart1 OpenParen ScenarioPart2 CloseParen
CloseParen
;
ScenarioPart1
:
'scenario plan "Plan"'
;
ScenarioPart2
:
'active yes'
;
TimeZone
:
'timezone'
;
projectIds:
Projectids Prj
;
resourceDeclaration
: Resource Identifier String
;
task
:
Task Identifier String OpenParen
(task)*
(Start DateTimeWithTimeZone
End DateTimeWithTimeZone
Scheduling Asap
Scheduled)*
CloseParen
;
/* (Complete FloatingPointNumber)* */
supplementTask returns [DefaultSupplementStatement suppStmt]
:
{
suppStmt = new DefaultSupplementStatement();
}
Supplement Task taskId=Identifier {suppStmt.setTaskId($taskId.text); }
OpenParen
(
bStmt=booking {suppStmt.addBookingStatement( $bStmt.stmt ); }
)*
Priority IntegerNumber
ProjectIdPrj
CloseParen
;
supplementResource
:
Supplement Resource Identifier OpenParen
workinghours+
CloseParen
;
workinghours
:
Workinghours DayOfWeek (Off|workingIntervals)
;
Workinghours
: 'workinghours'
;
workingIntervals
:
workingInterval (Comma workingInterval)*
;
workingInterval
: Time Hyphen Time
;
Time
: IntegerNumber Colon IntegerNumber
;
Colon
:
':'
;
Comma
:
','
;
DayOfWeek
: 'mon'
| 'tue'
| 'wed'
| 'thu'
| 'fri'
| 'sat'
| 'sun'
;
Off
:
'off'
;
booking returns [DefaultBookingStatement stmt]
:
{
stmt = new DefaultBookingStatement();
}
Booking resource=Identifier { stmt.setResource($resource.text); }
bt1=bookingTime { stmt.addIndBooking($bt1.indBooking); }
(Comma
bt2=bookingTime { stmt.addIndBooking($bt2.indBooking); }
)*
(OpenParen
overtime
CloseParen)
;
bookingTime returns [DefaultIndBooking indBooking]
:
startTime=DateTimeWithTimeZone
Plus
bookingDuration=FloatingPointNumberDuration
{
$indBooking = new DefaultIndBooking($startTime.text, $bookingDuration.text);
}
;
ProjectIdPrj
:
'projectid prj'
;
Booking
:
'booking'
;
Plus
:
'+'
;
duration
:
FloatingPointNumber 'h'
;
overtime
:
Overtime IntegerNumber
;
Overtime
:
'overtime'
;
Supplement
:
'supplement'
;
Priority
:
'priority'
;
Complete
:
'complete'
;
Start
:
'start'
;
End
:
'end'
;
Scheduling
:
'scheduling'
;
Asap
:
'asap'
;
Scheduled
:
'scheduled'
;
Task
:
'task'
;
Resource
:
'resource'
;
Projectids
:
'projectids'
;
Project
: 'project'
;
Prj
: 'prj'
;
OpenParen
: '{'
;
CloseParen
: '}'
;
Hyphen
: '-'
;
FloatingPointNumber
: D+'.'D+
;
FloatingPointNumberDuration
: D+ P D+ H
;
IntegerNumber
: D+
;
Identifier
: (D|A|P)+;
String
: '"' ~'"'* '"'
;
DateTimeWithTimeZone
: D D D D '-' D D '-' D D '-' D D ':' D D '-+' D D D D
;
fragment
D
: '0'..'9'
;
fragment
A
: 'A'..'Z'
| 'a'..'z'
;
fragment
P
: '.'
;
fragment
H
: 'h'
;
Space
: (' ' | '\t' | '\r'? '\n'){$channel=HIDDEN;}
;
回答1:
All of your tokens '"pcc"', '"R"', '"Doll"', '"Train"' and '"Ball"' are not tokenized as String's, but as Utc tokens, causing them to fail your production (parser) rules that expect String tokens.
Also, your supplementTask rule is wrong. It looks like:
supplementTask
: Supplement Task Identifier
OpenParen
booking*
Priority IntegerNumber
CloseParen
;
yet your input looks like:
supplement task T1 {
booking R62 2011-09-05-14:00-+0000 + 2.0h { overtime 2 }
priority 997
projectid prj
}
E.g., after your Priority and IntegerNumber tokens, there is no CloseParen, but there's the source "projectid prj".
FYI, here's the list of tokens your lexer produces:
Project project
Prj prj
Utc "pcc"
String "1.0"
DateTimeWithTimeZone 2011-09-04-00:00-+0000
Hyphen -
DateTimeWithTimeZone 2011-10-04-10:00-+0000
OpenParen {
TimeZone timezone
Utc "UTC"
ScenarioPart1 scenario plan "Plan"
OpenParen {
ScenarioPart2 active yes
CloseParen }
CloseParen }
Projectids projectids
Prj prj
Resource resource
Identifier R62
Utc "R"
Task task
Identifier T1
Utc "Doll"
OpenParen {
Start start
DateTimeWithTimeZone 2011-09-05-14:00-+0000
End end
DateTimeWithTimeZone 2011-09-05-16:00-+0000
Scheduling scheduling
Asap asap
Scheduled scheduled
CloseParen }
Task task
Identifier T2
Utc "Train"
OpenParen {
Start start
DateTimeWithTimeZone 2011-09-05-11:00-+0000
End end
DateTimeWithTimeZone 2011-09-05-14:00-+0000
Scheduling scheduling
Asap asap
Scheduled scheduled
CloseParen }
Task task
Identifier T4
Utc "Ball"
OpenParen {
Task task
Identifier T3
String "Big ball"
OpenParen {
Start start
DateTimeWithTimeZone 2011-09-05-09:00-+0000
End end
DateTimeWithTimeZone 2011-09-05-11:00-+0000
Scheduling scheduling
Asap asap
Scheduled scheduled
CloseParen }
Task task
Identifier T5
String "Small ball"
OpenParen {
Start start
DateTimeWithTimeZone 2011-09-05-16:00-+0000
End end
DateTimeWithTimeZone 2011-09-05-17:00-+0000
Scheduling scheduling
Asap asap
Scheduled scheduled
CloseParen }
CloseParen }
Supplement supplement
Task task
Identifier T1
OpenParen {
Booking booking
Identifier R62
DateTimeWithTimeZone 2011-09-05-14:00-+0000
Plus +
FloatingPointNumberDuration 2.0h
OpenParen {
Overtime overtime
IntegerNumber 2
CloseParen }
Priority priority
IntegerNumber 997
Identifier projectid
Prj prj
CloseParen }
Supplement supplement
Task task
Identifier T2
OpenParen {
Booking booking
Identifier R62
DateTimeWithTimeZone 2011-09-05-11:00-+0000
Plus +
FloatingPointNumberDuration 3.0h
OpenParen {
Overtime overtime
IntegerNumber 2
CloseParen }
Priority priority
IntegerNumber 998
Identifier projectid
Prj prj
CloseParen }
Supplement supplement
Task task
Identifier T4
OpenParen {
Priority priority
IntegerNumber 0
Identifier projectid
Prj prj
CloseParen }
Supplement supplement
Task task
Identifier T4.T3
OpenParen {
Booking booking
Identifier R62
DateTimeWithTimeZone 2011-09-05-09:00-+0000
Plus +
FloatingPointNumberDuration 2.0h
OpenParen {
Overtime overtime
IntegerNumber 2
CloseParen }
Priority priority
IntegerNumber 1000
Identifier projectid
Prj prj
CloseParen }
Supplement supplement
Task task
Identifier T4.T5
OpenParen {
Booking booking
Identifier R62
DateTimeWithTimeZone 2011-09-05-16:00-+0000
Plus +
FloatingPointNumberDuration 1.0h
OpenParen {
Overtime overtime
IntegerNumber 2
CloseParen }
Priority priority
IntegerNumber 996
Identifier projectid
Prj prj
CloseParen }
Supplement supplement
Resource resource
Identifier R62
OpenParen {
Workinghours workinghours
DayOfWeek sun
Off off
Workinghours workinghours
DayOfWeek mon
Time 9:00
Hyphen -
Time 17:00
Workinghours workinghours
DayOfWeek tue
Time 9:00
Hyphen -
Time 17:00
Workinghours workinghours
DayOfWeek wed
Time 9:00
Hyphen -
Time 17:00
Workinghours workinghours
DayOfWeek thu
Time 9:00
Hyphen -
Time 17:00
Workinghours workinghours
DayOfWeek fri
Time 9:00
Hyphen -
Time 17:00
Workinghours workinghours
DayOfWeek sat
Off off
CloseParen }
来源：https://stackoverflow.com/questions/7301741/antlr-extraneous-input-problem