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annotate core/src/luan/impl/ExpList.java @ 653:538b0ae08faa

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compile IfStmt and BreakStmt
author Franklin Schmidt <fschmidt@gmail.com>
date Tue, 05 Apr 2016 13:01:04 -0600
parents 859c0dedc8b6
children
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rev   line source
166
4eaee12f6c65 move luan/interp to impl
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 154
diff changeset
1 package luan.impl;
2
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3 import java.util.List;
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4 import java.util.ArrayList;
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c2e5101682ae Expr extends Expressions
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5 import java.util.Arrays;
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64ecb7a3aad7 rename Lua to Luan
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6 import luan.LuanException;
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7 import luan.LuanFunction;
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8 import luan.Luan;
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10
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11 final class ExpList {
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12
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b7d7069fee58 add assignment statement and CmdLine
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13 static final Expressions emptyExpList = new Expressions() {
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14
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8ede219cd111 add WebShell
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15 @Override public Object[] eval(LuanStateImpl luan) {
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16 return LuanFunction.NOTHING;
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7a2cdbc5767f add LuaState
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17 }
7a2cdbc5767f add LuaState
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18 };
7a2cdbc5767f add LuaState
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19
653
538b0ae08faa compile IfStmt and BreakStmt
Franklin Schmidt <fschmidt@gmail.com>
parents: 645
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20 private static Expr[] toArray(List<Expressions> list) {
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c2e5101682ae Expr extends Expressions
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21 Expr[] a = new Expr[list.size()];
c2e5101682ae Expr extends Expressions
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22 for( int i=0; i<a.length; i++ ) {
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23 Expressions exprs = list.get(i);
c2e5101682ae Expr extends Expressions
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24 if( exprs instanceof Expr ) {
c2e5101682ae Expr extends Expressions
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25 a[i] = (Expr)exprs;
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26 } else {
c2e5101682ae Expr extends Expressions
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27 a[i] = new ExpressionsExpr(exprs);
c2e5101682ae Expr extends Expressions
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28 }
3
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29 }
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30 return a;
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31 }
3
7a2cdbc5767f add LuaState
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32
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33 static Expressions build(List<Expressions> list) {
c2e5101682ae Expr extends Expressions
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34 switch(list.size()) {
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35 case 0:
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36 return emptyExpList;
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37 case 1:
c2e5101682ae Expr extends Expressions
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38 return list.get(0);
c2e5101682ae Expr extends Expressions
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39 default:
c2e5101682ae Expr extends Expressions
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40 if( list.get(list.size()-1) instanceof Expr ) {
c2e5101682ae Expr extends Expressions
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41 return new ExprList1( toArray(list) );
c2e5101682ae Expr extends Expressions
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42 } else {
c2e5101682ae Expr extends Expressions
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43 Expressions last = list.remove(list.size()-1);
c2e5101682ae Expr extends Expressions
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44 return new ExprList2( toArray(list), last );
c2e5101682ae Expr extends Expressions
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45 }
132
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46 }
3
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47 }
7a2cdbc5767f add LuaState
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48
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49 private static class ExprList1 implements Expressions {
c2e5101682ae Expr extends Expressions
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50 private final Expr[] exprs;
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51
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52 private ExprList1(Expr[] exprs) {
c2e5101682ae Expr extends Expressions
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53 this.exprs = exprs;
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54 }
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55
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56 @Override public Object eval(LuanStateImpl luan) throws LuanException {
c2e5101682ae Expr extends Expressions
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57 Object[] a = new Object[exprs.length];
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58 for( int i=0; i<exprs.length; i++ ) {
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59 a[i] = exprs[i].eval(luan);
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60 }
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61 return a;
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62 }
2
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63 }
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64
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65 private static class ExprList2 implements Expressions {
c2e5101682ae Expr extends Expressions
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66 private final Expr[] exprs;
c2e5101682ae Expr extends Expressions
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67 private final Expressions last;
c2e5101682ae Expr extends Expressions
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68
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69 private ExprList2(Expr[] exprs,Expressions last) {
c2e5101682ae Expr extends Expressions
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70 this.exprs = exprs;
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71 this.last = last;
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72 }
c2e5101682ae Expr extends Expressions
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73
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74 @Override public Object eval(LuanStateImpl luan) throws LuanException {
c2e5101682ae Expr extends Expressions
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75 List<Object> list = new ArrayList<Object>();
c2e5101682ae Expr extends Expressions
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76 for( Expr expr : exprs ) {
c2e5101682ae Expr extends Expressions
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77 list.add( expr.eval(luan) );
c2e5101682ae Expr extends Expressions
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78 }
c2e5101682ae Expr extends Expressions
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79 list.addAll( Arrays.asList(Luan.array( last.eval(luan) )) );
c2e5101682ae Expr extends Expressions
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80 return list.toArray();
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81 }
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82 }
2
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83 }