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

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Contents
1 Introduction.....................................................................................................1
1.1 Overview..............................................................................................1
3 n4 l4 V2 ~/ M6 W% Z. f4 x  E1.2 Target Audience.....................................................................................1
1.3 Related Information................................................................................1
1.4 Terms...................................................................................................1
/ b6 L4 B- I  b( |2 VFR Description in BNF......................................................................................3
7 p/ g3 M/ F4 K8 F1 J9 V5 D5 }  Y6 G2.1 VFR Programming Keywords....................................................................3
% K- I" ~1 C  ]/ D+ M2.1.1 // (comment marker).................................................................3
2.1.2 #define...................................................................................4
2 n- \; f! Q: b) P* U9 L; A5 \2.1.3 #include..................................................................................4
  u8 E$ M* A# r2.2 VFR Program.........................................................................................4
" E! R% f( U4 G4 m+ a2.3 VFR Data Struct Definition.......................................................................5
2.4 VFR FormSet Definition...........................................................................6
2.5 VFR FormSet List Definition.....................................................................7
2.6 VFR Default Stores Definition...................................................................7
7 k3 S6 v) z5 }4 y2.7 VFR Variable Store Definition...................................................................8
2.7.1 VFR Buffer Store Definition.........................................................8
2 d  D; o' E5 b# R( \2.7.2 VFR EFI Variable Store Definition.................................................8
# a- F6 K% z- P5 E2.7.3 VFR Variable Name Store Definition.............................................8
2.8 VFR FormSet DisableIf Definition..............................................................9
5 I& a2 G6 D( D4 t" ?) J9 f3 Q) l2.9 VFR FormSet SuppressIf Definition............................................................9
2.10 VFR General Token Definition.................................................................10
7 g' v' `0 {3 g8 ?" O. h2.10.1 GUID Definition.......................................................................10
2.10.2 String & String Identifier Definition............................................10
: v4 d4 S7 @& a9 A+ n+ }/ c2.10.3 Number Definition...................................................................10
2.10.4 VFR Statement Header Definition...............................................10
4 F, [; y% ]& z: z2.10.5 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
# V6 ?  i9 s4 i2.11.1 VFR Form Map Definition..........................................................13
2.11.2 VFR Image Statement Definition................................................13
7 j/ j$ [0 J  }; L4 m8 K2.11.3 VFR Locked Statement Definition...............................................13
) R- ]! d2 ^8 ?+ B1 U* {9 e2.11.4 VFR Rule Statement Definition..................................................13
2.11.5 VFR Statement Definition.........................................................14
( x; v' N( a: Y5 @2 a- h: k6 m2.11.6 VFR Question Type Statements Definition...................................17
2.11.7 VFR Conditional Type Statements Definition................................32
* D9 ]) j8 P& |( w2.11.8 VFR GUID Statement Definition.................................................33
2.12 VFR Expression Statement Definition.......................................................34
2.12.1 OR........................................................................................34
% c. C  A1 Z! ~% d/ _; y- @( a( v; A2.12.2 AND......................................................................................34
# ]+ o9 o8 p9 O. P$ [  @5 L2.12.3 bitwiseor................................................................................34
9 B7 E1 x4 b& j( H2.12.4 bitwiseand.............................................................................34
2.12.5 equal.....................................................................................35
2.12.6 compare................................................................................35
2.12.7 shift......................................................................................35
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2.12.8 add/minus..............................................................................35
2.12.9 multiply/divide/modulo............................................................36
; x! |* ~2 v5 O( Q* @$ \( p# N9 a2.12.10 cast terms..............................................................................36
2.12.11 atom terms............................................................................36