Annotation of capa/capa51/pProj/lexical.doc, revision 1.1
1.1 ! albertel 1:
! 2: In the begining of a quizz file, the lexxer places itself in
! 3: <S_TEXT> state. This is the default state that collects all question
! 4: text problem by problem.
! 5:
! 6:
! 7:
! 8: In <S_TEXT> state, where question text are collected in this state,
! 9: the question text can continued to the next line by combining the two
! 10: symbols '\' followed by a '\n'.
! 11: Variables can be displayed within "/DIS()" function.
! 12:
! 13: Within the <S_TEXT> state, begin of a line '/' commands
! 14: include "//", "/LET", "/BEG", "/HIN", "/EXP", "/IMP",
! 15: "/END", "/END()", "/ANS", "/MAP".
! 16: The "/DIS()" command can be placed within anyplace of the problem text,
! 17: therefore, the pattern is not limited to match the begin of a line symbol '^'.
! 18: A single "\n" indicates the end of a paragraph of question text,
! 19: therefore, lexxer returns this symbol to parser so that it signals the
! 20: end of q_text. The "\n" will showup in the final question text.
! 21: The pattern "\"{Space}*"\n" represents the continuation of question text
! 22: to the next line. In the lexxer, it simply does nothing.
! 23:
! 24: The token "//" appears at the beginning of a line indicates the whole
! 25: line as a comment. This is treated only by lexxer, it did not
! 26: report any token to parser().
! 27: The token "/LET" will
! 28:
! 29:
! 30:
! 31:
! 32:
! 33: When encountered a ^/ANS token, it switched to <S_ANSWER> state.
! 34: In <S_ANSWER> state, {Spaces}+ are ignored within the lexxer
! 35: without returning anything to parser,
! 36: and
! 37: a single '(' will cause Pcount++ and return token '(' to parser.
! 38:
! 39: <S_VARIABLE,S_LET,S_ANSWER,S_MAP>
! 40: is a combined state that does the following thing.
! 41: It ignores spaces.
! 42: When encountered a '(', it executes Pcount++ and return this symbol
! 43: to parser.
! 44: When there is a integer constant could be collected, it
! 45: returns a I_CONSTANT to parser and convert the string to integer.
! 46: When a real number encountered, it converts it into a real number and
! 47: returns R_CONSTANT to parser.
! 48: When it encountered an identifier, it calls
! 49: find_identifier() and returns IDENTIFIER to parser().
! 50: When it encountered a identifier followed by a
! 51: '(', then it simply collects the identifier to
! 52: a string and places it on top of the FuncStack[].
! 53: It then returns FUNCTION_ID to parser().
! 54:
! 55:
! 56: /IMP "/absolute/path/to/file" and
! 57: /IMP VariableName have to be in one line,
! 58: it cannot be broken down into several lines
! 59:
! 60:
! 61:
! 62: TO DO:
! 63: Internal variable names such as SUBJECTIVE[123][ABC]
! 64:
! 65: Add supports for loops like
! 66:
! 67: /LET var2 = random(1,9,1)
! 68: /WHILE ( var2 <= 10 )
! 69:
! 70: /LET problem_name = "file" + var2
! 71: /IMP problem_name
! 72: /LET var2 = var2 + 1
! 73: /ENDWHILE
! 74:
! 75: /ANS() /AND
! 76: /ANS() /AND
! 77: /ANS()
! 78:
! 79: /ANS() /OR
! 80: /ANS() /OR
! 81: /ANS()
! 82:
! 83: /IF (var1 == 0)
! 84:
! 85: /ELSE
! 86:
! 87: /ENDIF
! 88:
! 89: /MACRO macro_name(#1,#2,#3) /ENDM
! 90:
! 91:
! 92:
! 93: FILE FORMATS under CLASS/records/ directory
! 94: active.log
! 95: wabash002 , 0 , 11242 , /dev/ttyp6 ,(06/11/97 15:13:40)
! 96: ^^^^^^^^^
! 97: 9 chars student id
! 98: a space char, a comma, a space char, a comma, process id, a comma, term, date time.
! 99:
! 100: One student has only one entry in this file.
! 101:
! 102: duration.log
! 103:
! 104: meisels01 /dev/ttyp3 Tue May 20 14:05:59 1997 Tue May 20 14:06:11 1997
! 105: 173336318 /dev/ttyp1 Fri May 30 18:35:22 1997 Fri May 30 18:39:28 1997
! 106: 173336318 /dev/ttyp1 Fri May 30 18:39:53 1997 Fri May 30 18:42:41 1997
! 107:
! 108: student id, tty, start from , logout time.
! 109: One session has one entry.
! 110:
! 111: setX.db
! 112: 20,01/01/97 08:00,05/15/99 08:00,05/15/99 09:00
! 113: 11111111212113311222
! 114: 00000000000000000000
! 115: calcutta3 --------------------, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
! 116: calcutta2 --------------------, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
! 117:
! 118: the first item is the number of problems in this set for the purpose of parsing.
! 119: The second line is the problem weight and the third line is whether the corresponding
! 120: problem is of type partial credit or not.
! 121:
! 122:
! 123: logX.db
! 124: a73336319 Fri Feb 27 18:03:15 1998 --------------Y-----
! 125: a73336319 Fri Feb 27 18:04:08 1998 -----------------N--
! 126: a73336319 Fri Feb 27 18:04:18 1998 -----------------Y--
! 127: a87654444 Sat Feb 28 18:48:46 1998 ---u----------------
! 128: a43986495 Wed Mar 4 09:48:33 1998 Y-------------------
! 129:
! 130: weblogX.db
! 131:
! 132: a87654322 Fri Feb 27 18:57:51 1998 ---u----------------
! 133: a87654322 Fri Feb 27 19:35:57 1998 N-------------------
! 134: a87654322 Fri Feb 27 19:36:06 1998 N-------------------
! 135: a87654322 Fri Feb 27 19:36:16 1998 Y-------------------
! 136: a87654444 Sat Feb 28 18:46:37 1998 N-------------------
! 137: a73336318 Sun Mar 1 20:21:42 1998 -u------------------
! 138: a73336318 Sun Mar 1 20:21:54 1998 -N------------------
! 139: a73336318 Sun Mar 1 20:22:35 1998 -Y------------------
! 140: a73336318 Sun Mar 1 20:23:49 1998 --U-----------------
! 141:
! 142:
! 143:
! 144: submissionsX.db
! 145:
! 146: A12345678 24/02 09:55:24 6 safsdf
! 147: a73336318 26/02 13:26:17 2 46.6
! 148: a73336318 26/02 13:28:24 2 46.4
! 149: a73336318 26/02 13:28:40 2 46.6 cm
! 150: a73336318 26/02 13:31:35 2 46.6
! 151: a73336318 26/02 13:31:47 1 aedf
! 152: a73336318 26/02 13:32:30 3 40.6 m
! 153: guesta007 25/02 21:43:32 1 xcb
! 154: a73336319 27/02 17:38:53 1 cdef
! 155: a73336319 27/02 17:39:13 2 39.8
! 156: a73336319 27/02 17:39:22 2 39.8 m
! 157: a73336319 27/02 17:39:47 2 .398 J/N
! 158:
! 159:
! 160: websubmissionsX.db
! 161:
! 162: a73336318 26/02 13:28:40 2 46.6 cm
! 163: a73336318 26/02 13:31:35 2 46.6
! 164: a73336318 26/02 13:31:47 1 aedf
! 165: a73336318 26/02 13:32:30 3 40.6 m
! 166: a73336318 26/02 13:32:44 3 40.6 kg
! 167: a73336318 26/02 13:33:05 3 406 mm
! 168: a73336318 26/02 13:33:32 4 .332 J/N
! 169: a73336318 26/02 13:33:52 5 53.0 cm
! 170: a73336318 26/02 13:34:13 5 53.01 cm
! 171: a73336318 26/02 13:34:37 5 52.99 cm
! 172: a73336318 26/02 13:34:49 5 52,995 cm
! 173: a73336318 26/02 13:35:12 5 52.995 cm
! 174: a73336318 26/02 13:38:06 5 53.00 cm
! 175: a73336318 26/02 13:38:34 6 6.060
! 176: a73336318 26/02 13:38:55 6 60.6
! 177: a73336318 26/02 13:39:17 7 .97 m^2
! 178: a73336318 26/02 13:39:33 7 .0097 m^2
! 179: a73336318 26/02 13:42:51 8 1.99E3 cm^3
! 180:
! 181:
! 182:
! 183:
! 184: subjective answers
! 185: records/subj/ansX.db
! 186:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lexical.doc CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / capa / capa51 / pProj