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

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Contents
1 Introduction.....................................................................................................1
1 i; @2 @$ Q1 ?1.1 Overview..............................................................................................1
1.2 Target Audience.....................................................................................1
& m( p/ e% u* f1.3 Related Information................................................................................1
1.4 Terms...................................................................................................1
6 H2 \! k  {: m* a0 Z& x( x2 VFR Description in BNF......................................................................................3
6 \  N8 S4 f0 l+ {0 J" V2.1 VFR Programming Keywords....................................................................3
2.1.1 // (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
, R& f/ X4 n% I! w' g2 e8 _# [2.4 VFR FormSet Definition...........................................................................6
2.5 VFR FormSet List Definition.....................................................................7
( a" Y7 Y% O8 [7 F& J2.6 VFR Default Stores Definition...................................................................7
2.7 VFR Variable Store Definition...................................................................8
( j) D, ^8 `" m" [$ R: W4 a1 K2.7.1 VFR Buffer Store Definition.........................................................8
: u8 W; t6 S/ @1 x- C* a2.7.2 VFR EFI Variable Store Definition.................................................8
: o, V8 q1 s) s6 H: H: \# R$ u1 X! Y" y2.7.3 VFR Variable Name Store Definition.............................................8
9 ?9 `# K1 d" ]* W2.8 VFR FormSet DisableIf Definition..............................................................9
2.9 VFR FormSet SuppressIf Definition............................................................9
2.10 VFR General Token Definition.................................................................10
: c$ m2 a4 D2 q& H4 a& I# M2.10.1 GUID Definition.......................................................................10
2.10.2 String & String Identifier Definition............................................10
" D( u& W3 x  r3 h# {, C& W. E* `2.10.3 Number Definition...................................................................10
2.10.4 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
" p4 B. o% y" W6 \2 S8 i7 \8 j& n2.11 VFR Form Definition..............................................................................12
; `$ G  l. H) ^: J. K2.11.1 VFR Form Map Definition..........................................................13
2.11.2 VFR Image Statement Definition................................................13
3 t: I/ D1 M1 Y6 f! L6 E2.11.3 VFR Locked Statement Definition...............................................13
2.11.4 VFR Rule Statement Definition..................................................13
! [' o/ m* W5 Z( p" E  ]" Z9 D$ G2.11.5 VFR Statement Definition.........................................................14
2.11.6 VFR Question Type Statements Definition...................................17
2.11.7 VFR Conditional Type Statements Definition................................32
3 j' {$ v. E* M8 [4 j& e; f. W2.11.8 VFR GUID Statement Definition.................................................33
* N, b. I( g% C4 ], Y6 }2.12 VFR Expression Statement Definition.......................................................34
2.12.1 OR........................................................................................34
3 |) W* {: r' v- F3 d/ W2.12.2 AND......................................................................................34
2.12.3 bitwiseor................................................................................34
2.12.4 bitwiseand.............................................................................34
2.12.5 equal.....................................................................................35
2.12.6 compare................................................................................35
2.12.7 shift......................................................................................35
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2.12.8 add/minus..............................................................................35
- ~! k9 ~( O8 i2 @- f3 Q2.12.9 multiply/divide/modulo............................................................36
2.12.10 cast terms..............................................................................36
2.12.11 atom terms............................................................................36