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

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Contents
1 Introduction.....................................................................................................1
1.1 Overview..............................................................................................1
5 J* [/ P/ `- e. W2 l1 ~+ b1.2 Target Audience.....................................................................................1
3 ~: z3 U! F8 V3 `! N) p; W3 ~1.3 Related Information................................................................................1
1.4 Terms...................................................................................................1
2 VFR Description in BNF......................................................................................3
2.1 VFR Programming Keywords....................................................................3
2.1.1 // (comment marker).................................................................3
3 O. O4 v" r3 I/ u8 k% |2.1.2 #define...................................................................................4
) H4 [8 S$ v  k' F# E2 {' E  n2.1.3 #include..................................................................................4
2.2 VFR Program.........................................................................................4
! J/ x  p* v5 C! h2.3 VFR Data Struct Definition.......................................................................5
$ \5 a# u; w# A1 J2.4 VFR FormSet Definition...........................................................................6
* l, K) Y5 O6 g3 J2 L2.5 VFR FormSet List Definition.....................................................................7
2.6 VFR Default Stores Definition...................................................................7
$ c% k( V# m9 U; P+ a2.7 VFR Variable Store Definition...................................................................8
2.7.1 VFR Buffer Store Definition.........................................................8
" g9 H  I6 g8 D7 f* t4 w% p2.7.2 VFR EFI Variable Store Definition.................................................8
6 C3 M6 p+ c: s' {: P9 i6 _: M2.7.3 VFR Variable Name Store Definition.............................................8
2.8 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
4 r# P' o, h* v2 ~2.10.2 String & String Identifier Definition............................................10
0 I/ ~" V/ I% Z1 i% {2.10.3 Number Definition...................................................................10
, m% r, Y; M, a3 u) P2.10.4 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
( J! Q( ?3 n/ q5 ~6 m( D7 X2.11 VFR Form Definition..............................................................................12
7 d' s! a5 O1 o% V, A( |* l0 \2.11.1 VFR Form Map Definition..........................................................13
2.11.2 VFR Image Statement Definition................................................13
% i+ b1 q% ]. @  V. Q. c7 K2.11.3 VFR Locked Statement Definition...............................................13
9 V4 Q) \4 m+ S: m/ o- w; l2.11.4 VFR Rule Statement Definition..................................................13
$ S' M; V" ]% p+ [2.11.5 VFR Statement Definition.........................................................14
2.11.6 VFR Question Type Statements Definition...................................17
2 M3 L4 I! l8 n2.11.7 VFR Conditional Type Statements Definition................................32
2 E1 Q6 d" u" `8 ?) K2.11.8 VFR GUID Statement Definition.................................................33
2.12 VFR Expression Statement Definition.......................................................34
2.12.1 OR........................................................................................34
! K  W& x6 W( `2.12.2 AND......................................................................................34
$ v& c0 E/ z; t. y& o1 ?, P2.12.3 bitwiseor................................................................................34
2.12.4 bitwiseand.............................................................................34
( Z: d* K5 s7 q& S; n  E2.12.5 equal.....................................................................................35
2 F' L- V5 i) M& a$ Z. ?9 j2.12.6 compare................................................................................35
2.12.7 shift......................................................................................35
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2.12.8 add/minus..............................................................................35
1 l& _" s- N& ^1 Y' r2.12.9 multiply/divide/modulo............................................................36
2.12.10 cast terms..............................................................................36
& u+ b! Q- k1 Y  n2.12.11 atom terms............................................................................36