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

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Contents
' {  y& w2 d  G; O; n$ N1 Introduction.....................................................................................................1
1.1 Overview..............................................................................................1
1.2 Target Audience.....................................................................................1
4 f- r4 g/ L4 G' M1.3 Related Information................................................................................1
1 a1 @6 j" D$ q% y+ c9 \+ i8 V1.4 Terms...................................................................................................1
& E7 r2 N: m" b5 Y2 VFR Description in BNF......................................................................................3
9 J4 `" e6 t# q0 V1 K) W/ s2.1 VFR Programming Keywords....................................................................3
9 A+ [. \5 @$ _$ N/ |2.1.1 // (comment marker).................................................................3
4 u/ \# ?- f$ k3 i* Q2.1.2 #define...................................................................................4
2.1.3 #include..................................................................................4
/ I: @% v0 i4 l0 g2.2 VFR Program.........................................................................................4
0 L; X3 t1 ]% a  V  a2.3 VFR Data Struct Definition.......................................................................5
2.4 VFR FormSet Definition...........................................................................6
# X6 a  I2 H( d6 r. D$ ~; A2.5 VFR FormSet List Definition.....................................................................7
2.6 VFR Default Stores Definition...................................................................7
. u8 Q7 [1 V5 \" q2.7 VFR Variable Store Definition...................................................................8
2.7.1 VFR Buffer Store Definition.........................................................8
5 u3 {- o5 i9 s+ n) `" y& g$ ~. h2.7.2 VFR EFI Variable Store Definition.................................................8
2.7.3 VFR Variable Name Store Definition.............................................8
5 \4 s3 ], {) q# [( ^2.8 VFR FormSet DisableIf Definition..............................................................9
2.9 VFR FormSet SuppressIf Definition............................................................9
% f& `  y/ n* h# A  z$ [2.10 VFR General Token Definition.................................................................10
2.10.1 GUID Definition.......................................................................10
5 P" Y3 Z* Y( ^# W8 A* H7 D$ r2.10.2 String & String Identifier Definition............................................10
% F: C$ A3 r3 Y' ~+ D" q9 v2.10.3 Number Definition...................................................................10
- r$ `0 b7 e* r$ B; u  {. F+ X2.10.4 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
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
6 |- H( _' [' |% O3 n2.11.4 VFR Rule Statement Definition..................................................13
" u1 V4 e" ~1 {5 _, y- @2 K+ }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
' T& ~( d4 e3 y/ E* X/ [) r- O2.11.8 VFR GUID Statement Definition.................................................33
2.12 VFR Expression Statement Definition.......................................................34
2.12.1 OR........................................................................................34
% f4 r  L5 k2 ^+ z' P5 O9 L2.12.2 AND......................................................................................34
2.12.3 bitwiseor................................................................................34
1 v& P  Q" c0 D3 r1 {5 P2.12.4 bitwiseand.............................................................................34
/ u- ~( y, g; Y  P$ N8 M2.12.5 equal.....................................................................................35
: O9 t% u9 y: H+ q/ u/ g2.12.6 compare................................................................................35
2.12.7 shift......................................................................................35
4 c2 U6 |/ I5 R* `- M) liii
2.12.8 add/minus..............................................................................35
2.12.9 multiply/divide/modulo............................................................36
2 P0 \& m6 j/ L2.12.10 cast terms..............................................................................36
: \* L0 r! N$ S* f! p. ^6 ^2.12.11 atom terms............................................................................36