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1 package ppg.spec;
2
3 import java.util.*;
4 import ppg.*;
5 import ppg.code.*;
6 import ppg.parse.*;
7
8 public abstract class Spec implements Unparse
9 {
10 protected String  packageName;
11 protected Vector imports, symbols, prec;
12 protected InitCode initCode;
13 protected ActionCode actionCode;
14 protected ParserCode parserCode;
15 protected ScanCode scanCode;
16 protected PPGSpec child;
17
18 public Spec () {
19 initCode = null;
20 actionCode = null;
21 parserCode = null;
22 scanCode = null;
23 child = null;
24 }
25
26 public void setPkgName (String pkgName) {
27 if (pkgName != null)
28 packageName = pkgName;
29 }
30
31 public void replaceCode (Vector codeParts) {
32 if (codeParts == null)
33 return;
34
35 Code code=null;
36 for (int i=0; i < codeParts.size(); i++) {
37 try {
38 code = (Code) codeParts.elementAt(i);
39 if (code instanceof ActionCode && code != null) {
40 actionCode = (ActionCode) code.clone();
41 } else if (code instanceof InitCode && code != null) {
42 initCode = (InitCode) code.clone();
43 } else if (code instanceof ParserCode && code != null) {
44 parserCode = (ParserCode) code.clone();
45 } else { if (code != null)
47 scanCode = (ScanCode) code.clone();
48 }
49 } catch (Exception e) {
50 System.err.println(PPG.HEADER+" Spec::replaceCode(): not a code segment "+
51 "found in code Vector: "+
52 ((code == null) ? "null" : code.toString()));
53 System.exit(1);
54 }
55 }
56 }
57
58 public void addImports (Vector imp) {
59 if (imp == null)
60 return;
61
62 for (int i=0; i < imp.size(); i++) {
63 imports.addElement(imp.elementAt(i));
64 }
65 }
66
67 public void setChild (PPGSpec childSpec) {
68 child = childSpec;
69 }
70
71 public void parseChain(String basePath) {}
73
74
77 public abstract CUPSpec coalesce() throws PPGError;
78
79 }
80 |
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