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

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Contents
9 J) V* L1 z. n/ u1 Introduction.....................................................................................................1
/ S5 s" q) u+ [0 S+ Y' @2 e1 [1.1 Overview..............................................................................................1
: T3 A+ A- j# h7 b+ ?1.2 Target Audience.....................................................................................1
1.3 Related Information................................................................................1
1.4 Terms...................................................................................................1
2 VFR Description in BNF......................................................................................3
2.1 VFR Programming Keywords....................................................................3
) q8 H! v; i  _2 a3 k; v2.1.1 // (comment marker).................................................................3
2.1.2 #define...................................................................................4
9 p3 f2 t% ]" _' c2.1.3 #include..................................................................................4
2.2 VFR Program.........................................................................................4
2.3 VFR Data Struct Definition.......................................................................5
2.4 VFR FormSet Definition...........................................................................6
2.5 VFR FormSet List Definition.....................................................................7
2.6 VFR Default Stores Definition...................................................................7
: w0 [* f5 c4 o- g. h2.7 VFR Variable Store Definition...................................................................8
2.7.1 VFR Buffer Store Definition.........................................................8
2.7.2 VFR EFI Variable Store Definition.................................................8
; U1 K5 m9 p( n2.7.3 VFR Variable Name Store Definition.............................................8
2.8 VFR FormSet DisableIf Definition..............................................................9
8 H: J* C* v- z7 m( E8 f6 W" L2.9 VFR FormSet SuppressIf Definition............................................................9
2 N+ }* V, }9 T; V2.10 VFR General Token Definition.................................................................10
2.10.1 GUID Definition.......................................................................10
2.10.2 String & String Identifier Definition............................................10
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
# D7 ~4 F; f9 f' I, ~6 F2.11 VFR Form Definition..............................................................................12
! x' r. q  Z( W* B. O# X4 Q2.11.1 VFR Form Map Definition..........................................................13
0 `' E1 ^# A& @3 B9 Y! Q2.11.2 VFR Image Statement Definition................................................13
2.11.3 VFR Locked Statement Definition...............................................13
# g- j0 S9 W& d: d: E2.11.4 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
, T0 g6 o7 ?% @0 Y: n! z2.12 VFR Expression Statement Definition.......................................................34
- U/ i) r7 `; D5 K" F1 Z2.12.1 OR........................................................................................34
2.12.2 AND......................................................................................34
" H! y4 E, h: ^: Q2.12.3 bitwiseor................................................................................34
3 H! N. G3 O  m& `5 u2.12.4 bitwiseand.............................................................................34
! t' u( N* U. O* k2.12.5 equal.....................................................................................35
& U/ `( x$ K. e, c1 j2 a3 O2.12.6 compare................................................................................35
2.12.7 shift......................................................................................35
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5 q$ Z8 |$ t& C/ f* W2.12.8 add/minus..............................................................................35
0 n  y+ e  }& n( ~+ q$ Q: K) @( I2.12.9 multiply/divide/modulo............................................................36
9 f, |' g, j2 B0 N7 s, L6 O2.12.10 cast terms..............................................................................36
2.12.11 atom terms............................................................................36