Mercurial Hosting > luan
annotate core/src/luan/Luan.java @ 573:894f991baac5
remove LuanServlet
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Sun, 12 Jul 2015 23:04:47 -0600 |
parents | 0dfc01d8d42d |
children | 6cc2f047019b |
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1 package luan; |
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2 |
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3 import java.util.List; |
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4 import luan.modules.BasicLuan; |
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7 public final class Luan { |
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8 |
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9 public static void main(String[] args) throws LuanException { |
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10 LuanState luan = LuanState.newInstance(); |
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11 LuanFunction standalone = (LuanFunction)BasicLuan.load_file(luan,"classpath:luan/cmd_line.luan",null); |
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12 luan.call(standalone,args); |
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13 } |
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14 |
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15 public static Object first(Object obj) { |
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16 if( !(obj instanceof Object[]) ) |
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17 return obj; |
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18 Object[] a = (Object[])obj; |
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19 return a.length==0 ? null : a[0]; |
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20 } |
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21 |
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22 public static Object[] array(Object obj) { |
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23 return obj instanceof Object[] ? (Object[])obj : new Object[]{obj}; |
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24 } |
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25 |
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26 public static String type(Object obj) { |
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27 if( obj == null ) |
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28 return "nil"; |
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29 if( obj instanceof String ) |
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30 return "string"; |
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31 if( obj instanceof Boolean ) |
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32 return "boolean"; |
46
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33 if( obj instanceof Number ) |
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34 return "number"; |
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35 if( obj instanceof LuanTable ) |
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36 return "table"; |
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37 if( obj instanceof LuanFunction ) |
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38 return "function"; |
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39 if( obj instanceof byte[] ) |
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40 return "binary"; |
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41 return "java"; |
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42 } |
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43 |
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44 public static String toString(Number n) { |
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45 if( n instanceof Integer ) |
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46 return n.toString(); |
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47 int i = n.intValue(); |
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48 if( i == n.doubleValue() ) |
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49 return Integer.toString(i); |
46
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50 String s = n.toString(); |
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51 int iE = s.indexOf('E'); |
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52 String ending = null; |
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53 if( iE != -1 ) { |
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54 ending = s.substring(iE); |
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55 s = s.substring(0,iE); |
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56 } |
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57 if( s.endsWith(".0") ) |
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58 s = s.substring(0,s.length()-2); |
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59 if( ending != null ) |
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60 s += ending; |
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61 return s; |
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62 } |
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63 |
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64 public static Integer asInteger(Object obj) { |
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65 if( obj instanceof Integer ) |
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66 return (Integer)obj; |
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67 if( !(obj instanceof Number) ) |
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68 return null; |
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69 Number n = (Number)obj; |
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70 int i = n.intValue(); |
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71 return i==n.doubleValue() ? Integer.valueOf(i) : null; |
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72 } |
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73 |
88
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74 public static String stringEncode(String s) { |
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75 s = s.replace("\\","\\\\"); |
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76 s = s.replace("\u0007","\\a"); |
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77 s = s.replace("\b","\\b"); |
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78 s = s.replace("\f","\\f"); |
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79 s = s.replace("\n","\\n"); |
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80 s = s.replace("\r","\\r"); |
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81 s = s.replace("\t","\\t"); |
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82 s = s.replace("\u000b","\\v"); |
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83 s = s.replace("\"","\\\""); |
420 | 84 s = s.replace("\'","\\'"); |
88
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85 return s; |
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86 } |
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87 |
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88 private Luan() {} // never |
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89 } |