我有一个语法文件Bookings.g和我尝试用该语法解析的文件。
为什么我会收到这些错误？
第1:12行无关输入'“pcc”'期待字符串 第3行：0输入'}'不匹配期望ScenarioPart1 第7:13行不匹配输入'“R”'期待字符串 9：8不匹配的输入'“Doll”'期待String 第15：8行不匹配的输入'“Train”'期待字符串 第21：8行不匹配输入'“Ball”'期待字符串 第34：0行'}'缺少EOF
语法
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;}
;
要解析的文件
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：这是有效的更正语法文件。
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;}
;
答案 0 :(得分：2)
您的所有令牌'"pcc"'，'"R"'，'"Doll"'，'"Train"'和'"Ball"' 不标记为{{1但是作为String令牌，会导致它们失败您的生产（解析器）规则，这些规则会导致Utc令牌。
此外，您的String规则有误。它看起来像：
supplementTask但您的输入如下：
supplementTask
: Supplement Task Identifier
OpenParen
booking*
Priority IntegerNumber
CloseParen
;
例如，在您的supplement task T1 {
booking R62 2011-09-05-14:00-+0000 + 2.0h { overtime 2 }
priority 997
projectid prj
}
和Priority令牌之后，没有IntegerNumber，但是源CloseParen。
仅供参考，这是你的词作者产生的代币清单：
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 }