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

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Contents
1 Introduction.....................................................................................................1
2 t( z* S, @$ Y1.1 Overview..............................................................................................1
1.2 Target Audience.....................................................................................1
0 z& Q+ w" M' o* I) S. w: z1.3 Related Information................................................................................1
1.4 Terms...................................................................................................1
  Y" E. B6 i; J5 L2 VFR Description in BNF......................................................................................3
7 U+ `; e! P9 s( k( F2.1 VFR Programming Keywords....................................................................3
- \9 G5 R) P8 M8 ^9 b" d3 O2.1.1 // (comment marker).................................................................3
2.1.2 #define...................................................................................4
2.1.3 #include..................................................................................4
2.2 VFR Program.........................................................................................4
2.3 VFR Data Struct Definition.......................................................................5
2.4 VFR FormSet Definition...........................................................................6
, B8 B; q% O& O2.5 VFR FormSet List Definition.....................................................................7
: f2 J3 `1 _, {! Q1 S- Q/ I2.6 VFR Default Stores Definition...................................................................7
2.7 VFR Variable Store Definition...................................................................8
2.7.1 VFR Buffer Store Definition.........................................................8
2.7.2 VFR EFI Variable Store Definition.................................................8
" Z4 K' ]* g5 e, z' W, `2.7.3 VFR Variable Name Store Definition.............................................8
1 B5 c2 `4 Y1 C( g6 b" z- u2.8 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
9 k! Y6 a0 J1 C0 q5 I& X* g  Q3 @& l2.10.2 String & String Identifier Definition............................................10
2.10.3 Number Definition...................................................................10
. A1 ]0 W7 h% P$ f3 T2.10.4 VFR Statement Header Definition...............................................10
  G* m0 s0 o, Z8 m) k2.10.5 VFR Question Header Definition.................................................11
/ m( P6 s8 P" q3 n- ]2.10.6 VFR Constant Value Definition...................................................11
. b2 o/ I2 `4 ]6 L2.10.7 VFR Statement Image & Locked Tag Definition............................12
2.11 VFR Form Definition..............................................................................12
2.11.1 VFR Form Map Definition..........................................................13
' p/ d# X" m& p$ c6 g8 T7 K2.11.2 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
3 \. c  \5 K2 H: K/ S9 Z0 F8 Q2.11.6 VFR Question Type Statements Definition...................................17
% K* J. k4 T' B; V# R2.11.7 VFR Conditional Type Statements Definition................................32
2.11.8 VFR GUID Statement Definition.................................................33
2.12 VFR Expression Statement Definition.......................................................34
2.12.1 OR........................................................................................34
2.12.2 AND......................................................................................34
9 w) B0 i  O1 v5 ?- p8 ]2.12.3 bitwiseor................................................................................34
2.12.4 bitwiseand.............................................................................34
2.12.5 equal.....................................................................................35
2.12.6 compare................................................................................35
2.12.7 shift......................................................................................35
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* J  j9 E7 R( J* l# b7 q2.12.8 add/minus..............................................................................35
2.12.9 multiply/divide/modulo............................................................36
+ H1 O# Q, y) _  b" Z' i- e  \# N2.12.10 cast terms..............................................................................36
. ~' x, r. {: }8 T8 p2.12.11 atom terms............................................................................36