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

bini

Contents
1 Introduction.....................................................................................................1
1.1 Overview..............................................................................................1
1.2 Target Audience.....................................................................................1
3 c- v% q* @! E& @& c, [+ a1.3 Related Information................................................................................1
1.4 Terms...................................................................................................1
- q: H: b+ Q9 J+ _: S* h5 {8 {" V2 VFR Description in BNF......................................................................................3
2.1 VFR Programming Keywords....................................................................3
2.1.1 // (comment marker).................................................................3
2.1.2 #define...................................................................................4
2.1.3 #include..................................................................................4
5 P$ m" n3 }! h% E' T+ T0 ^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
) B. Z, w* @0 I, U$ a2.6 VFR Default Stores Definition...................................................................7
' }% W5 L8 q8 X1 w" Z! n2.7 VFR Variable Store Definition...................................................................8
2.7.1 VFR Buffer Store Definition.........................................................8
2.7.2 VFR EFI Variable Store Definition.................................................8
2.7.3 VFR Variable Name Store Definition.............................................8
9 Z) g+ F4 J) N8 J2 z- ]2 S2.8 VFR FormSet DisableIf Definition..............................................................9
2.9 VFR FormSet SuppressIf Definition............................................................9
2.10 VFR General Token Definition.................................................................10
2.10.1 GUID Definition.......................................................................10
. E4 {, s% T0 M6 t  |2.10.2 String & String Identifier Definition............................................10
: N6 o$ w( |' e/ R2.10.3 Number Definition...................................................................10
2.10.4 VFR Statement Header Definition...............................................10
2.10.5 VFR Question Header Definition.................................................11
/ D0 ^( n7 C) ^0 e6 ^- \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
9 H$ D/ E& n* S( z. ^, [- h2.11.2 VFR Image Statement Definition................................................13
2.11.3 VFR Locked Statement Definition...............................................13
( {* H" W. Y0 C2.11.4 VFR Rule Statement Definition..................................................13
2.11.5 VFR Statement Definition.........................................................14
) R/ ]3 {# H) H  H; h. b4 n2.11.6 VFR Question Type Statements Definition...................................17
% F4 q2 p8 a) Z; b& O2.11.7 VFR Conditional Type Statements Definition................................32
: T3 [6 H) \, N, z2.11.8 VFR GUID Statement Definition.................................................33
. o+ _6 Z. m/ z0 A2 i2.12 VFR Expression Statement Definition.......................................................34
2.12.1 OR........................................................................................34
+ B( f7 d$ P/ K% a# v' l2.12.2 AND......................................................................................34
6 U/ y2 p) v% O( N: s. N2.12.3 bitwiseor................................................................................34
1 E/ w* D: _+ Y+ o3 u% ?$ B2.12.4 bitwiseand.............................................................................34
2.12.5 equal.....................................................................................35
2.12.6 compare................................................................................35
2.12.7 shift......................................................................................35
iii
6 [8 z' ]+ ?; B4 G% x, t, `2.12.8 add/minus..............................................................................35
2.12.9 multiply/divide/modulo............................................................36
# b6 w9 q. R2 F% q% [2.12.10 cast terms..............................................................................36
  p/ N- C6 \4 a' W8 v5 l2.12.11 atom terms............................................................................36