[转载]VFR Programming Language v1.3 PDF 2010-2-12

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Contents
1 Introduction.....................................................................................................1
# B/ J6 n- |+ A: Z* |8 y1.1 Overview..............................................................................................1
1.2 Target Audience.....................................................................................1
1.3 Related Information................................................................................1
: Z$ F/ r: R) D1.4 Terms...................................................................................................1
( [  T+ {  l& }# n* {; i2 [) i0 X2 VFR Description in BNF......................................................................................3
2.1 VFR Programming Keywords....................................................................3
2.1.1 // (comment marker).................................................................3
4 @/ s$ D# |( s; R- I2.1.2 #define...................................................................................4
% N# p# ^0 U* I8 l2.1.3 #include..................................................................................4
2.2 VFR Program.........................................................................................4
2.3 VFR Data Struct Definition.......................................................................5
8 U: Q2 f- N/ \. U" x2.4 VFR FormSet Definition...........................................................................6
2.5 VFR FormSet List Definition.....................................................................7
# m: j# h' h3 A" G  d9 ~* t2.6 VFR Default Stores Definition...................................................................7
2 W5 q! ~9 }9 z, P2 X2.7 VFR Variable Store Definition...................................................................8
. h4 }" K) S: [# W* `2.7.1 VFR Buffer Store Definition.........................................................8
2.7.2 VFR EFI Variable Store Definition.................................................8
: v" D2 O2 L: j5 C  m/ K. r2.7.3 VFR Variable Name Store Definition.............................................8
- _( C4 ^1 y1 C9 n" _, W7 \7 B2.8 VFR FormSet DisableIf Definition..............................................................9
2.9 VFR FormSet SuppressIf Definition............................................................9
2.10 VFR General Token Definition.................................................................10
2.10.1 GUID Definition.......................................................................10
2.10.2 String & String Identifier Definition............................................10
2.10.3 Number Definition...................................................................10
2.10.4 VFR Statement Header Definition...............................................10
2.10.5 VFR Question Header Definition.................................................11
2.10.6 VFR Constant Value Definition...................................................11
) h3 I- ?$ k% E) I4 H. M( z( e& v2.10.7 VFR Statement Image & Locked Tag Definition............................12
/ m8 X* o6 o' ^8 V5 p) Q2.11 VFR Form Definition..............................................................................12
2.11.1 VFR Form Map Definition..........................................................13
2.11.2 VFR Image Statement Definition................................................13
2.11.3 VFR Locked Statement Definition...............................................13
2.11.4 VFR Rule Statement Definition..................................................13
2.11.5 VFR Statement Definition.........................................................14
2.11.6 VFR Question Type Statements Definition...................................17
2.11.7 VFR Conditional Type Statements Definition................................32
2 t# ~+ c( F8 H( W2.11.8 VFR GUID Statement Definition.................................................33
) X) C9 f6 _( F3 d& r! O$ @! o/ R2.12 VFR Expression Statement Definition.......................................................34
: B: f1 J( Q) e! M/ Q$ M2.12.1 OR........................................................................................34
2.12.2 AND......................................................................................34
% {+ c5 `/ p1 v1 m1 c2.12.3 bitwiseor................................................................................34
5 O- \6 m% @9 C8 [6 O' H2.12.4 bitwiseand.............................................................................34
2.12.5 equal.....................................................................................35
4 n& m3 J# a" \* Y2.12.6 compare................................................................................35
2.12.7 shift......................................................................................35
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2.12.8 add/minus..............................................................................35
; d4 ^" d% }" b5 O+ Z2.12.9 multiply/divide/modulo............................................................36
2.12.10 cast terms..............................................................................36
2.12.11 atom terms............................................................................36