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

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Contents
1 Introduction.....................................................................................................1
1.1 Overview..............................................................................................1
) u, n4 o, g; A8 Y1.2 Target Audience.....................................................................................1
1.3 Related Information................................................................................1
1.4 Terms...................................................................................................1
2 VFR Description in BNF......................................................................................3
2.1 VFR Programming Keywords....................................................................3
: X1 P- z' h# Y9 j  u: {2.1.1 // (comment marker).................................................................3
2.1.2 #define...................................................................................4
2.1.3 #include..................................................................................4
2.2 VFR Program.........................................................................................4
* |% L0 d- s" O9 B. H2.3 VFR Data Struct Definition.......................................................................5
9 l/ ]! |9 z/ {' ]$ O- Q2.4 VFR FormSet Definition...........................................................................6
2.5 VFR FormSet List Definition.....................................................................7
% ?4 M0 q! S6 N2.6 VFR Default Stores Definition...................................................................7
1 S. i3 R* O0 m; k  i1 W2.7 VFR Variable Store Definition...................................................................8
9 K. L0 g: Z3 u, b$ e2.7.1 VFR Buffer Store Definition.........................................................8
2.7.2 VFR EFI Variable Store Definition.................................................8
! ?. K/ e0 O3 x% D2.7.3 VFR Variable Name Store Definition.............................................8
2.8 VFR FormSet DisableIf Definition..............................................................9
2.9 VFR FormSet SuppressIf Definition............................................................9
+ ]% q' V4 |& m6 T% O2.10 VFR General Token Definition.................................................................10
2.10.1 GUID Definition.......................................................................10
5 v; d1 l9 c( t& l2 F3 _3 f2.10.2 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
2.10.7 VFR Statement Image & Locked Tag Definition............................12
1 u% _$ C9 e3 x0 b9 s, X) K7 A2.11 VFR Form Definition..............................................................................12
) S4 l0 k9 c  R2 }( t. G2.11.1 VFR Form Map Definition..........................................................13
2.11.2 VFR Image Statement Definition................................................13
. U; N& c/ o2 J3 M2.11.3 VFR Locked Statement Definition...............................................13
! N8 ?  S$ h! P2.11.4 VFR Rule Statement Definition..................................................13
2.11.5 VFR Statement Definition.........................................................14
- N( D  S+ H# z* Y2.11.6 VFR Question Type Statements Definition...................................17
4 o9 V4 d1 U7 n5 z5 i9 ]6 Y& [2.11.7 VFR Conditional Type Statements Definition................................32
2.11.8 VFR GUID Statement Definition.................................................33
1 Z5 p6 K. v/ P  B2 U# y7 Y$ {* B, i: W1 P2.12 VFR Expression Statement Definition.......................................................34
1 c! X# Q! Q; @- m$ @8 S/ a7 [2.12.1 OR........................................................................................34
" u6 Q9 H4 M, m! s2.12.2 AND......................................................................................34
2.12.3 bitwiseor................................................................................34
  t* o( x  a+ r" Y! d# t2.12.4 bitwiseand.............................................................................34
+ Q6 }. u+ q. ^4 q- x) A, a2.12.5 equal.....................................................................................35
2.12.6 compare................................................................................35
$ b: U* y$ C8 s; m$ b/ P# W2.12.7 shift......................................................................................35
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0 @" ^1 F5 p  P$ N$ U' ^2.12.8 add/minus..............................................................................35
$ G* J5 ]6 j( I, H  n2.12.9 multiply/divide/modulo............................................................36
- p% y: u2 `, l1 V2.12.10 cast terms..............................................................................36
% T, N# ~: S8 L2 b+ t6 G2.12.11 atom terms............................................................................36