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

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Contents
1 Introduction.....................................................................................................1
2 h6 W, y$ c) ?/ b3 K1 ~$ b1.1 Overview..............................................................................................1
1.2 Target Audience.....................................................................................1
3 F, Z( M- g! d0 e% H" q# Y1.3 Related Information................................................................................1
1.4 Terms...................................................................................................1
9 A& M" _, |0 T/ W7 e2 VFR Description in BNF......................................................................................3
, Z0 {: F' K7 O; [2.1 VFR Programming Keywords....................................................................3
2.1.1 // (comment marker).................................................................3
2.1.2 #define...................................................................................4
2.1.3 #include..................................................................................4
2 |( T: S9 G2 i  q2.2 VFR Program.........................................................................................4
; O' l! e$ x+ g3 w/ e" x2.3 VFR Data Struct Definition.......................................................................5
2.4 VFR FormSet Definition...........................................................................6
# K# P; N. h3 i2.5 VFR FormSet List Definition.....................................................................7
2.6 VFR Default Stores Definition...................................................................7
) D+ t4 p# O4 i2.7 VFR Variable Store Definition...................................................................8
2.7.1 VFR Buffer Store Definition.........................................................8
* d) z: P7 d4 @2.7.2 VFR EFI Variable Store Definition.................................................8
2.7.3 VFR Variable Name Store Definition.............................................8
9 C# ?- |- r5 F# m( d2.8 VFR FormSet DisableIf Definition..............................................................9
2.9 VFR FormSet SuppressIf Definition............................................................9
2.10 VFR General Token Definition.................................................................10
# g, `+ J& g" X# `. {! a2 i5 O2.10.1 GUID Definition.......................................................................10
. E" b  E& @3 ~2.10.2 String & String Identifier Definition............................................10
. x1 ]/ a! j# v) d6 S6 q  v2.10.3 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
2.11 VFR Form Definition..............................................................................12
2.11.1 VFR Form Map Definition..........................................................13
2.11.2 VFR Image Statement Definition................................................13
2.11.3 VFR Locked Statement Definition...............................................13
2.11.4 VFR Rule Statement Definition..................................................13
# R% s7 O) [5 o6 L7 W* D2.11.5 VFR Statement Definition.........................................................14
2.11.6 VFR Question Type Statements Definition...................................17
0 ^! |" }. R1 ^* ]* J( z- y  b2.11.7 VFR Conditional Type Statements Definition................................32
, K3 O  v7 _, D1 w2.11.8 VFR GUID Statement Definition.................................................33
) }! v/ M: Z& D- x2.12 VFR Expression Statement Definition.......................................................34
2.12.1 OR........................................................................................34
2.12.2 AND......................................................................................34
2.12.3 bitwiseor................................................................................34
* n( k* g; `5 `' C2.12.4 bitwiseand.............................................................................34
8 I* V! d# V& ~2.12.5 equal.....................................................................................35
2.12.6 compare................................................................................35
' e$ y; o* M5 b3 J2.12.7 shift......................................................................................35
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" B" N8 H+ ~. D# K- y$ l2.12.8 add/minus..............................................................................35
2.12.9 multiply/divide/modulo............................................................36
2.12.10 cast terms..............................................................................36
( j- Q; m% E+ @( _7 Y, {4 x8 F1 p2.12.11 atom terms............................................................................36