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

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Contents
) T7 t# W0 u# E1 Introduction.....................................................................................................1
1.1 Overview..............................................................................................1
$ Q7 U, C3 o* J1 n1.2 Target Audience.....................................................................................1
1.3 Related Information................................................................................1
" U2 Y& C5 b- y* k7 k7 Y2 v& m1.4 Terms...................................................................................................1
2 VFR Description in BNF......................................................................................3
' M) r+ h2 l) I0 H8 h/ @2.1 VFR Programming Keywords....................................................................3
2.1.1 // (comment marker).................................................................3
2.1.2 #define...................................................................................4
2.1.3 #include..................................................................................4
4 W( V2 e& y& r" c% e, I8 }2.2 VFR Program.........................................................................................4
- c4 L' [( ~: q* @7 d* U& n/ w/ O2.3 VFR Data Struct Definition.......................................................................5
8 [' Z8 Q8 f* H5 K, I! e2.4 VFR FormSet Definition...........................................................................6
. x! R5 l7 [% P3 F+ E1 L2.5 VFR FormSet List Definition.....................................................................7
7 ?  E, n: X+ P! T& J, d2.6 VFR Default Stores Definition...................................................................7
" m3 a% f+ S- S  O7 {/ s2.7 VFR Variable Store Definition...................................................................8
' ~& u" J" D& @" B, z* t2.7.1 VFR Buffer Store Definition.........................................................8
2.7.2 VFR EFI Variable Store Definition.................................................8
2.7.3 VFR Variable Name Store Definition.............................................8
; u$ M' k5 t9 {7 z1 u7 ~* C. x. U2.8 VFR FormSet DisableIf Definition..............................................................9
- V& z2 G- e3 t+ x7 S0 u% q1 J2.9 VFR FormSet SuppressIf Definition............................................................9
2.10 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
9 b4 B& i: Z* }8 x2.10.5 VFR Question Header Definition.................................................11
2.10.6 VFR Constant Value Definition...................................................11
2.10.7 VFR Statement Image & Locked Tag Definition............................12
0 C, _* F7 [% T8 R7 ~# R0 @2.11 VFR Form Definition..............................................................................12
6 L  a" C$ k( C* U1 i2 Z9 p2.11.1 VFR Form Map Definition..........................................................13
2.11.2 VFR Image Statement Definition................................................13
3 c( ~: p) R3 J6 y2.11.3 VFR Locked Statement Definition...............................................13
4 z: ^5 T! S3 O* s3 J2.11.4 VFR Rule Statement Definition..................................................13
2 B, D' r7 W7 w/ A' k2.11.5 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
; g. Q  U- @* z2 T( f7 j, k0 I2.12.1 OR........................................................................................34
: f/ v& X/ s  @; t8 A2.12.2 AND......................................................................................34
2.12.3 bitwiseor................................................................................34
: w: ^) ?2 a4 e! e" m. V2.12.4 bitwiseand.............................................................................34
" s7 v0 X8 f& A3 q5 f4 m8 g2.12.5 equal.....................................................................................35
2.12.6 compare................................................................................35
4 s6 @  h- G/ G. j1 B. ]  x2.12.7 shift......................................................................................35
0 P& ]) a1 Q# ]! {% j! Ziii
2.12.8 add/minus..............................................................................35
2.12.9 multiply/divide/modulo............................................................36
2.12.10 cast terms..............................................................................36
2.12.11 atom terms............................................................................36