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

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Contents
1 Introduction.....................................................................................................1
1.1 Overview..............................................................................................1
% ]! R" s) S$ T2 }" f' G$ K1 E1.2 Target Audience.....................................................................................1
1.3 Related Information................................................................................1
1.4 Terms...................................................................................................1
2 VFR Description in BNF......................................................................................3
2.1 VFR Programming Keywords....................................................................3
# y' W5 j+ Q: V0 V2.1.1 // (comment marker).................................................................3
) N% o- J" {5 _* _3 U+ ]2.1.2 #define...................................................................................4
+ n" [- J" ~; K2.1.3 #include..................................................................................4
2.2 VFR Program.........................................................................................4
2.3 VFR Data Struct Definition.......................................................................5
) _+ w! u8 F# O, G$ S2 J2.4 VFR FormSet Definition...........................................................................6
2 p) R+ T2 B8 z; w/ x  ~6 z2.5 VFR FormSet List Definition.....................................................................7
2.6 VFR Default Stores Definition...................................................................7
$ o+ n$ U' }: p" q8 `1 r7 [( J2.7 VFR Variable Store Definition...................................................................8
: J" o% M  `3 H. z, _2.7.1 VFR Buffer Store Definition.........................................................8
2.7.2 VFR EFI Variable Store Definition.................................................8
, n. p# b% g9 P$ b2 @4 A& e; d2.7.3 VFR Variable Name Store Definition.............................................8
  X( V! Q, \( k2.8 VFR FormSet DisableIf Definition..............................................................9
2.9 VFR FormSet SuppressIf Definition............................................................9
$ i7 K/ ]$ p* [2.10 VFR General Token Definition.................................................................10
& F# F+ H) f; W' A2.10.1 GUID Definition.......................................................................10
/ c5 O2 Z2 L: U2.10.2 String & String Identifier Definition............................................10
2.10.3 Number Definition...................................................................10
  [( @  v; k" _$ ]. _: U2.10.4 VFR Statement Header Definition...............................................10
5 e+ r) x" v1 e% e5 N/ T2.10.5 VFR Question Header Definition.................................................11
9 k" b4 f# c" v+ e! w1 T9 s2.10.6 VFR Constant Value Definition...................................................11
2.10.7 VFR Statement Image & Locked Tag Definition............................12
2.11 VFR Form Definition..............................................................................12
2.11.1 VFR Form Map Definition..........................................................13
: I" j2 ^6 O& K: x% }! G  x7 k6 Q2.11.2 VFR Image Statement Definition................................................13
7 b9 n( E8 T- B* ~4 e! ^2.11.3 VFR Locked Statement Definition...............................................13
+ N! p  v7 c# @2.11.4 VFR Rule Statement Definition..................................................13
5 d, y7 }: E- K' L' [" X+ X; p2.11.5 VFR Statement Definition.........................................................14
2.11.6 VFR Question Type Statements Definition...................................17
) I: V+ \, T: ~7 w6 L! r2.11.7 VFR Conditional Type Statements Definition................................32
2.11.8 VFR GUID Statement Definition.................................................33
. G' a1 `+ R! \3 C% N# ~2 n  T) B2.12 VFR Expression Statement Definition.......................................................34
2.12.1 OR........................................................................................34
# A$ l  Q, |6 V# V) n2.12.2 AND......................................................................................34
" z$ d1 `6 G* V, b8 B2.12.3 bitwiseor................................................................................34
2.12.4 bitwiseand.............................................................................34
5 }2 m* b# @4 g' O2 u4 |2.12.5 equal.....................................................................................35
2.12.6 compare................................................................................35
% z4 d9 h2 f. Z9 t( r4 i8 a9 T6 Q2.12.7 shift......................................................................................35
. n! {' _' a1 {% {( R; uiii
2.12.8 add/minus..............................................................................35
2.12.9 multiply/divide/modulo............................................................36
7 v) m0 p6 I5 K, ~1 `1 H: v. e2.12.10 cast terms..............................................................................36
0 l( p3 J& E  c+ r, F# D2.12.11 atom terms............................................................................36