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

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Contents
3 i) ^1 N, F7 a2 o, L7 S9 r1 Introduction.....................................................................................................1
1.1 Overview..............................................................................................1
+ C5 @" g  |. Z1 M2 O; n5 M1.2 Target Audience.....................................................................................1
1.3 Related Information................................................................................1
' q9 m0 p- S) W" k% Y! k6 b# u: p1.4 Terms...................................................................................................1
2 VFR Description in BNF......................................................................................3
2.1 VFR Programming Keywords....................................................................3
  ]6 Y& Q+ a4 Q2.1.1 // (comment marker).................................................................3
6 j4 ~. r. ]) p2.1.2 #define...................................................................................4
& [4 ?$ ?( P8 y) S) t2.1.3 #include..................................................................................4
2.2 VFR Program.........................................................................................4
$ ]+ J1 F. H  I) ]2.3 VFR Data Struct Definition.......................................................................5
2.4 VFR FormSet Definition...........................................................................6
2.5 VFR FormSet List Definition.....................................................................7
3 q/ D& E. u  p& v2.6 VFR Default Stores Definition...................................................................7
2.7 VFR Variable Store Definition...................................................................8
2.7.1 VFR Buffer Store Definition.........................................................8
* Q- X" i6 [% Q: z/ g  u2.7.2 VFR EFI Variable Store Definition.................................................8
2.7.3 VFR Variable Name Store Definition.............................................8
2.8 VFR FormSet DisableIf Definition..............................................................9
! ]3 H: s* O4 @2.9 VFR FormSet SuppressIf Definition............................................................9
+ n- E+ L. F  E4 Q9 d2.10 VFR General Token Definition.................................................................10
( X% Y+ X: G, x; L: }2.10.1 GUID Definition.......................................................................10
( u4 v" l5 ?. R- m2 O2.10.2 String & String Identifier Definition............................................10
( Y4 s2 Q" X4 _& }# i# k6 \4 {2.10.3 Number Definition...................................................................10
. ]+ ]1 ~: q9 V8 T7 c1 H. G+ e8 d2.10.4 VFR Statement Header Definition...............................................10
2.10.5 VFR Question Header Definition.................................................11
8 q' e- I" M7 t3 Y: K2.10.6 VFR Constant Value Definition...................................................11
& m, M- ^* m0 r- B4 Q2.10.7 VFR Statement Image & Locked Tag Definition............................12
2.11 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
) N3 s( U0 }' W" v# X( r3 g2.11.8 VFR GUID Statement Definition.................................................33
2.12 VFR Expression Statement Definition.......................................................34
2.12.1 OR........................................................................................34
2.12.2 AND......................................................................................34
2.12.3 bitwiseor................................................................................34
2.12.4 bitwiseand.............................................................................34
2.12.5 equal.....................................................................................35
2.12.6 compare................................................................................35
2 s9 G/ d8 V& A9 F2 P2.12.7 shift......................................................................................35
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2.12.8 add/minus..............................................................................35
7 S  h0 U$ R' A6 i) g2.12.9 multiply/divide/modulo............................................................36
5 T( E7 J- z# X$ d5 @2.12.10 cast terms..............................................................................36
2.12.11 atom terms............................................................................36