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

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Contents
1 Introduction.....................................................................................................1
- N/ G+ n+ s, M3 L- h3 q1.1 Overview..............................................................................................1
* J6 R  n/ w6 m6 u; M1.2 Target Audience.....................................................................................1
1.3 Related Information................................................................................1
1.4 Terms...................................................................................................1
2 A9 p+ Z" X$ s9 R5 L3 K, J1 A2 VFR Description in BNF......................................................................................3
, A$ u2 N# T3 Q. x, P3 x2.1 VFR Programming Keywords....................................................................3
' {& ?" e& T; d; Q5 t3 s. W2.1.1 // (comment marker).................................................................3
1 a& [" T  e; [9 b2.1.2 #define...................................................................................4
2.1.3 #include..................................................................................4
2.2 VFR Program.........................................................................................4
2.3 VFR Data Struct Definition.......................................................................5
& W$ ^) d5 ^5 l! U2.4 VFR FormSet Definition...........................................................................6
2.5 VFR FormSet List Definition.....................................................................7
2.6 VFR Default Stores Definition...................................................................7
6 o8 K/ I% t- i  w/ Z2.7 VFR Variable Store Definition...................................................................8
* y. w7 r. m. ]: e9 E2.7.1 VFR Buffer Store Definition.........................................................8
2.7.2 VFR EFI Variable Store Definition.................................................8
- g6 z$ }# u$ ]0 T/ i2.7.3 VFR Variable Name Store Definition.............................................8
2.8 VFR FormSet DisableIf Definition..............................................................9
9 h4 x) h$ \+ h! u1 @8 J  e2.9 VFR FormSet SuppressIf Definition............................................................9
2.10 VFR General Token Definition.................................................................10
6 H% L) E6 |4 }8 P$ w1 c3 E9 V2.10.1 GUID Definition.......................................................................10
, X9 Z. d: j* e8 N! I/ e; l6 F2.10.2 String & String Identifier Definition............................................10
- X! _. q% v; g3 T  {: N2 C0 q2.10.3 Number Definition...................................................................10
  ^* c6 N8 B- f8 j/ Y( Q2.10.4 VFR Statement Header Definition...............................................10
& k6 {6 W( S' b  T) r2.10.5 VFR Question Header Definition.................................................11
2.10.6 VFR Constant Value Definition...................................................11
. Y6 B4 A. t. ^2.10.7 VFR Statement Image & Locked Tag Definition............................12
2.11 VFR Form Definition..............................................................................12
2.11.1 VFR Form Map Definition..........................................................13
4 x4 ?# H: O! U2 K, s2.11.2 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
# U/ {7 f' I; t+ f) R* r2.12 VFR Expression Statement Definition.......................................................34
2.12.1 OR........................................................................................34
2.12.2 AND......................................................................................34
2.12.3 bitwiseor................................................................................34
/ }4 x7 j; t2 v* g# J" B+ |2 _2.12.4 bitwiseand.............................................................................34
2.12.5 equal.....................................................................................35
2.12.6 compare................................................................................35
2.12.7 shift......................................................................................35
% Q5 R- Z3 k5 N- A2 `$ yiii
2.12.8 add/minus..............................................................................35
. @% Y2 d4 b) x# g: Q9 I, `# l2.12.9 multiply/divide/modulo............................................................36
2.12.10 cast terms..............................................................................36
7 _8 n5 f# v2 Z. O( a2.12.11 atom terms............................................................................36