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

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Contents
1 Introduction.....................................................................................................1
9 K. m* s, Y! y. B* q1.1 Overview..............................................................................................1
/ {- s6 [) S$ t. A' t1.2 Target Audience.....................................................................................1
1.3 Related Information................................................................................1
7 X4 T8 X( L/ V) N1.4 Terms...................................................................................................1
7 i: O- n3 \2 Y  C, N! g2 VFR Description in BNF......................................................................................3
; C8 x- x1 S8 s  d1 `; c8 i2.1 VFR Programming Keywords....................................................................3
. n7 \+ I) J& d/ p( a2.1.1 // (comment marker).................................................................3
2.1.2 #define...................................................................................4
4 R9 \4 Y( ^! j- T' H3 u: W2 q8 S2.1.3 #include..................................................................................4
3 s! [5 T$ ], D2 l& A: p2.2 VFR Program.........................................................................................4
: d7 A8 E. Y2 C5 l6 S1 F- {2.3 VFR Data Struct Definition.......................................................................5
2.4 VFR FormSet Definition...........................................................................6
- ^! l6 N8 r) g9 s( d9 a2.5 VFR FormSet List Definition.....................................................................7
: a- n' `' D5 q2 c2.6 VFR Default Stores Definition...................................................................7
+ r# G/ @% b# n& Y2.7 VFR Variable Store Definition...................................................................8
6 y% H0 o" G2 u3 G# t1 b2.7.1 VFR Buffer Store Definition.........................................................8
2.7.2 VFR EFI Variable Store Definition.................................................8
2.7.3 VFR Variable Name Store Definition.............................................8
2.8 VFR FormSet DisableIf Definition..............................................................9
2.9 VFR FormSet SuppressIf Definition............................................................9
, _0 U+ y7 o. i" E6 r" n. n8 ~2.10 VFR General Token Definition.................................................................10
2.10.1 GUID Definition.......................................................................10
/ ^2 s( L6 h" ~! A4 m8 m2.10.2 String & String Identifier Definition............................................10
  a3 P+ Z' _) P+ D" A8 S: c2.10.3 Number Definition...................................................................10
2.10.4 VFR Statement Header Definition...............................................10
2.10.5 VFR Question Header Definition.................................................11
4 k2 W" x) l# g( v! |2.10.6 VFR Constant Value Definition...................................................11
: E& J8 g$ k- U. P5 b0 V2.10.7 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
* v  \, F7 C& a% Z2.11.3 VFR Locked Statement Definition...............................................13
/ M4 l# m2 v1 l% 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
% C. _# ]  Y9 e$ V) x$ M2.11.8 VFR GUID Statement Definition.................................................33
2.12 VFR Expression Statement Definition.......................................................34
2.12.1 OR........................................................................................34
2.12.2 AND......................................................................................34
4 }5 _* @) _( S! ?: L6 f+ L' e2 A2.12.3 bitwiseor................................................................................34
+ k1 N2 E* Q+ J& O* I2.12.4 bitwiseand.............................................................................34
2.12.5 equal.....................................................................................35
( \# O3 u" n1 s# ]9 w; L2.12.6 compare................................................................................35
9 G& a# E% ^" q" u4 z2.12.7 shift......................................................................................35
7 h' Z8 \  U; f  r8 x+ ]0 wiii
2.12.8 add/minus..............................................................................35
5 X, N/ h0 T% w! @2.12.9 multiply/divide/modulo............................................................36
2.12.10 cast terms..............................................................................36
2.12.11 atom terms............................................................................36