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

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Contents
1 Introduction.....................................................................................................1
1.1 Overview..............................................................................................1
: R& N5 I, A1 v$ @3 D% W! p1.2 Target Audience.....................................................................................1
6 G' P/ f! H4 Z0 y$ Q1 g1.3 Related Information................................................................................1
  p) l9 b8 n0 S+ g5 y5 h1.4 Terms...................................................................................................1
4 S( e+ L, R+ v2 Y* s2 VFR Description in BNF......................................................................................3
2.1 VFR Programming Keywords....................................................................3
8 H  O' s7 E+ w- Z$ ^2.1.1 // (comment marker).................................................................3
2.1.2 #define...................................................................................4
: B& A" E3 ]" E2.1.3 #include..................................................................................4
# |$ s. ?$ ]' G' T! Z* x; B+ l2.2 VFR Program.........................................................................................4
& w$ D- X$ e3 B5 `2 h2.3 VFR Data Struct Definition.......................................................................5
2.4 VFR FormSet Definition...........................................................................6
2.5 VFR FormSet List Definition.....................................................................7
. r. Y3 x9 G) J& _1 g8 W9 C) Q2.6 VFR Default Stores Definition...................................................................7
2.7 VFR Variable Store Definition...................................................................8
4 A7 \3 ?2 W: N8 h% \  u' @2.7.1 VFR Buffer Store Definition.........................................................8
$ W0 D; ~( J( M+ b9 a2.7.2 VFR EFI Variable Store Definition.................................................8
0 {% C. R( H# r/ a4 C2.7.3 VFR Variable Name Store Definition.............................................8
2.8 VFR FormSet DisableIf Definition..............................................................9
2.9 VFR FormSet SuppressIf Definition............................................................9
2.10 VFR General Token Definition.................................................................10
7 P6 ^# h; ?! n3 D0 z& F- G# o* G- M2.10.1 GUID Definition.......................................................................10
0 U' R0 g8 [( q% b4 C0 T6 f, @; d2.10.2 String & String Identifier Definition............................................10
% F: f! R' ?3 L8 Z7 c2.10.3 Number Definition...................................................................10
) d4 b9 t% [7 q2.10.4 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
) h. p/ t- T' |% [2 e2.11 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
& ^  ]3 ~  V1 u" ]  e2.11.4 VFR Rule Statement Definition..................................................13
$ a( ]3 u  f( |2 Z& K2.11.5 VFR Statement Definition.........................................................14
  x- V# x! h/ h' S  n0 \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
/ n. X' P( K7 I' D5 p+ \2.12 VFR Expression Statement Definition.......................................................34
' ^9 b) q3 O7 _2.12.1 OR........................................................................................34
2.12.2 AND......................................................................................34
/ U! z" I! _& A7 h1 W2.12.3 bitwiseor................................................................................34
2.12.4 bitwiseand.............................................................................34
) H2 k1 U( h+ ]  @" f; ]* K, i. f2.12.5 equal.....................................................................................35
2.12.6 compare................................................................................35
. ^$ ^# }0 t% h  j9 {# N( ~2.12.7 shift......................................................................................35
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2.12.8 add/minus..............................................................................35
# T! j: e; L. S; {" Q2.12.9 multiply/divide/modulo............................................................36
- S" o3 l( {* J, C2 k7 ?2.12.10 cast terms..............................................................................36
! X/ _5 U) P" I, b+ Z3 m$ t2.12.11 atom terms............................................................................36