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

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Contents
$ y0 l: W! y) D3 Z1 f! e$ L1 Introduction.....................................................................................................1
! |; t  L) B- a1.1 Overview..............................................................................................1
1.2 Target Audience.....................................................................................1
) G2 g. l- e2 q5 k1.3 Related Information................................................................................1
. o: r4 O3 i% ?. h0 |% A5 ~7 O1.4 Terms...................................................................................................1
6 E3 F# L+ A" M' P- \, n2 VFR Description in BNF......................................................................................3
2.1 VFR Programming Keywords....................................................................3
9 p  H" L, M' m2 D& P2.1.1 // (comment marker).................................................................3
2.1.2 #define...................................................................................4
2.1.3 #include..................................................................................4
2.2 VFR Program.........................................................................................4
5 L- O& ]1 H! K' y# n8 o3 f2.3 VFR Data Struct Definition.......................................................................5
2.4 VFR FormSet Definition...........................................................................6
1 ~- T- f+ t" g. A( E2.5 VFR FormSet List Definition.....................................................................7
2.6 VFR Default Stores Definition...................................................................7
) y! e' ?1 B  w$ r, X$ R. O2.7 VFR Variable Store Definition...................................................................8
' r: W$ w7 h' l, D4 V! Q* f4 c* N2.7.1 VFR Buffer Store Definition.........................................................8
3 ]& x- r1 v, g: p# w2.7.2 VFR EFI Variable Store Definition.................................................8
% N7 Y$ h; A( F7 n0 `. x" G# T2.7.3 VFR Variable Name Store Definition.............................................8
7 R/ \* u: a  B2.8 VFR FormSet DisableIf Definition..............................................................9
3 i* x! \" Y4 i# ^9 l- Z8 I% ]2.9 VFR FormSet SuppressIf Definition............................................................9
! M9 y  {+ {. r! ^! e2.10 VFR General Token Definition.................................................................10
: E* O# w: G# c( |8 v* u2.10.1 GUID Definition.......................................................................10
2.10.2 String & String Identifier Definition............................................10
2.10.3 Number Definition...................................................................10
+ a/ L* |: ?7 U! M. n+ v/ _2.10.4 VFR Statement Header Definition...............................................10
+ s$ Q. x4 Y3 {- [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
* k. V% D8 w3 _$ c; [9 _. p2.11.1 VFR Form Map Definition..........................................................13
' V! z) ~+ |: x8 A: ^9 W2.11.2 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
2.11.8 VFR GUID Statement Definition.................................................33
2.12 VFR Expression Statement Definition.......................................................34
( }* J  ?6 Y' ]7 U  x3 ~3 S2.12.1 OR........................................................................................34
' d! f& c1 L' Q! Y2.12.2 AND......................................................................................34
2.12.3 bitwiseor................................................................................34
2.12.4 bitwiseand.............................................................................34
6 _$ @$ m' d, `! N! m! k2.12.5 equal.....................................................................................35
1 n7 s( c+ U" W+ A- ?1 h2 t$ {3 o. R4 n2.12.6 compare................................................................................35
2.12.7 shift......................................................................................35
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2.12.8 add/minus..............................................................................35
2 W2 h5 h; F' ^# U$ L2.12.9 multiply/divide/modulo............................................................36
2.12.10 cast terms..............................................................................36
, H& x: q* r  |2.12.11 atom terms............................................................................36