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annotate core/src/luan/modules/BasicLuan.java @ 290:9a0cc6d9b27b

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add Time.period(); add assert_long(); git-svn-id: https://luan-java.googlecode.com/svn/trunk@291 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Tue, 09 Dec 2014 04:39:18 +0000
parents 454a486d9c19
children 7ea6dfdf81ba
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
167
4c0131c2b650 merge luan/lib into modules
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diff changeset
1 package luan.modules;
2
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3 import java.io.InputStreamReader;
12
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4 import java.io.IOException;
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5 import java.lang.reflect.Method;
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6 import java.util.Iterator;
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7 import java.util.Map;
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8 import java.util.List;
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9 import java.util.ArrayList;
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10 import luan.Luan;
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11 import luan.LuanState;
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12 import luan.LuanTable;
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13 import luan.LuanFunction;
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14 import luan.LuanJavaFunction;
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15 import luan.LuanException;
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16 import luan.LuanSource;
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17 import luan.LuanElement;
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4eaee12f6c65 move luan/interp to impl
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18 import luan.impl.LuanCompiler;
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20
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21 public final class BasicLuan {
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23 public static final LuanFunction LOADER = new LuanFunction() {
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24 @Override public Object call(LuanState luan,Object[] args) {
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25 LuanTable module = Luan.newTable();
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26 try {
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27 module.put( "assert", new LuanJavaFunction(BasicLuan.class.getMethod("assert_",LuanState.class,Object.class,String.class),null) );
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28 add( module, "assert_boolean", LuanState.class, Boolean.TYPE );
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29 add( module, "assert_nil", LuanState.class, Object.class );
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30 add( module, "assert_number", LuanState.class, Number.class );
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31 add( module, "assert_string", LuanState.class, String.class );
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32 add( module, "assert_table", LuanState.class, LuanTable.class );
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ef39bc4d3f70 basic lucene works
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33 add( module, "assert_integer", LuanState.class, Integer.TYPE );
290
9a0cc6d9b27b add Time.period();
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34 add( module, "assert_long", LuanState.class, Long.TYPE );
163
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35 add( module, "do_file", LuanState.class, String.class );
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36 add( module, "error", LuanState.class, Object.class );
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37 add( module, "get_metatable", LuanState.class, Object.class );
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38 add( module, "ipairs", LuanState.class, LuanTable.class );
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39 add( module, "load", LuanState.class, String.class, String.class, LuanTable.class, Boolean.class );
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40 add( module, "load_file", LuanState.class, String.class );
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41 add( module, "pairs", LuanState.class, LuanTable.class );
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42 add( module, "range", LuanState.class, Double.TYPE, Double.TYPE, Double.class );
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43 add( module, "raw_equal", Object.class, Object.class );
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44 add( module, "raw_get", LuanTable.class, Object.class );
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45 add( module, "raw_len", LuanState.class, Object.class );
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46 add( module, "raw_set", LuanTable.class, Object.class, Object.class );
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47 add( module, "repr", LuanState.class, Object.class );
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48 add( module, "set_metatable", LuanTable.class, LuanTable.class );
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1fada5587469 add Basic.to_boolean and change "not" operator to require a boolean
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49 add( module, "to_boolean", Object.class );
163
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50 add( module, "to_number", Object.class, Integer.class );
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51 add( module, "to_string", LuanState.class, Object.class );
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52 add( module, "type", Object.class );
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53 add( module, "values", new Object[0].getClass() );
73
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54 } catch(NoSuchMethodException e) {
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55 throw new RuntimeException(e);
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56 }
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57 return module;
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58 }
73
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59 };
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60
64
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61 private static void add(LuanTable t,String method,Class<?>... parameterTypes) throws NoSuchMethodException {
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62 t.put( method, new LuanJavaFunction(BasicLuan.class.getMethod(method,parameterTypes),null) );
64
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63 }
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64
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65 public static String type(Object obj) {
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66 return Luan.type(obj);
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67 }
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68
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69 public static LuanFunction load(LuanState luan,String text,String sourceName,LuanTable env,Boolean allowExpr)
128
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70 throws LuanException
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71 {
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72 if( allowExpr==null )
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73 allowExpr = false;
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74 return LuanCompiler.compile(luan,new LuanSource(sourceName,text),env,allowExpr);
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75 }
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76
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77 public static LuanFunction load_file(LuanState luan,String fileName) throws LuanException {
265
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78 if( fileName == null )
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79 fileName = "stdin:";
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80 LuanFunction fn = PackageLuan.loader(luan,fileName,false);
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81 if( fn == null )
264
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82 throw luan.exception( "file '"+fileName+"' not found" );
265
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83 return fn;
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84 }
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85
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86 public static Object do_file(LuanState luan,String fileName) throws LuanException {
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87 LuanFunction fn = load_file(luan,fileName);
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88 return luan.call(fn);
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89 }
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90
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91 public static LuanFunction pairs(LuanState luan,final LuanTable t) throws LuanException {
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92 Utils.checkNotNull(luan,t);
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93 return new LuanFunction() {
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94 Iterator<Map.Entry<Object,Object>> iter = t.iterator();
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95
109
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96 @Override public Object[] call(LuanState luan,Object[] args) {
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97 if( !iter.hasNext() )
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98 return LuanFunction.NOTHING;
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99 Map.Entry<Object,Object> entry = iter.next();
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100 return new Object[]{entry.getKey(),entry.getValue()};
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101 }
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102 };
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103 }
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104
221
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105 public static LuanFunction ipairs(LuanState luan,final LuanTable t) throws LuanException {
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106 Utils.checkNotNull(luan,t);
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107 return new LuanFunction() {
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108 List<Object> list = t.asList();
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109 int i = 0;
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110 final int size = list.size();
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111
221
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112 @Override public Object[] call(LuanState luan,Object[] args) {
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113 if( i >= size )
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114 return LuanFunction.NOTHING;
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115 Object val = list.get(i++);
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116 return new Object[]{i,val};
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117 }
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118 };
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119 }
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120
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121 public static LuanTable get_metatable(LuanState luan,Object obj) {
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122 return luan.getMetatable(obj);
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123 }
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124
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125 public static LuanTable set_metatable(LuanTable table,LuanTable metatable) {
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126 table.setMetatable(metatable);
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127 return table;
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128 }
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129
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130 public static boolean raw_equal(Object v1,Object v2) {
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131 return v1 == v2 || v1 != null && v1.equals(v2);
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132 }
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133
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134 public static Object raw_get(LuanTable table,Object index) {
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135 return table.get(index);
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136 }
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137
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138 public static LuanTable raw_set(LuanTable table,Object index,Object value) {
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139 table.put(index,value);
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140 return table;
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141 }
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142
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143 public static int raw_len(LuanState luan,Object v) throws LuanException {
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144 if( v instanceof String ) {
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145 String s = (String)v;
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146 return s.length();
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147 }
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148 if( v instanceof LuanTable ) {
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149 LuanTable t = (LuanTable)v;
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150 return t.length();
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151 }
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152 throw luan.exception( "bad argument #1 to 'raw_len' (table or string expected)" );
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153 }
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154
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155 public static Number to_number(Object e,Integer base) {
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156 return Luan.toNumber(e,base);
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157 }
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158
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159 public static String to_string(LuanState luan,Object v) throws LuanException {
130
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160 return luan.toString(v);
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161 }
41
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162
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163 public static boolean to_boolean(Object v) throws LuanException {
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164 return Luan.toBoolean(v);
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165 }
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166
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167 public static void error(LuanState luan,Object msg) throws LuanException {
130
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168 throw luan.exception(msg);
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169 }
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170
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171 public static Object assert_(LuanState luan,Object v,String msg) throws LuanException {
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172 if( Luan.toBoolean(v) )
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173 return v;
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174 if( msg == null )
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175 msg = "assertion failed!";
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176 throw luan.exception( msg );
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177 }
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178
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179 public static String assert_string(LuanState luan,String v) throws LuanException {
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180 Utils.checkNotNull(luan,v);
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181 return v;
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182 }
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183
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184 public static Number assert_number(LuanState luan,Number v) throws LuanException {
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185 Utils.checkNotNull(luan,v);
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186 return v;
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187 }
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188
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189 public static LuanTable assert_table(LuanState luan,LuanTable v) throws LuanException {
251
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190 Utils.checkNotNull(luan,v);
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191 return v;
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192 }
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193
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194 public static boolean assert_boolean(LuanState luan,boolean v) throws LuanException {
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195 return v;
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196 }
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197
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198 public static Object assert_nil(LuanState luan,Object v) throws LuanException {
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199 if( v != null )
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200 throw luan.exception("bad argument #1 (nil expected, got "+Luan.type(v)+")");
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201 return v;
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202 }
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203
233
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204 public static int assert_integer(LuanState luan,int v) throws LuanException {
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205 return v;
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206 }
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207
290
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208 public static long assert_long(LuanState luan,long v) throws LuanException {
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209 return v;
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210 }
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211
88
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212 public static String repr(LuanState luan,Object v) throws LuanException {
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213 return luan.repr(v);
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214 }
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215
109
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216 public static LuanFunction range(LuanState luan,final double from,final double to,Double stepV) throws LuanException {
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217 final double step = stepV==null ? 1.0 : stepV;
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218 if( step == 0.0 )
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219 throw luan.exception("bad argument #3 (step may not be zero)");
109
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220 return new LuanFunction() {
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221 double v = from;
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222
112
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223 @Override public Object call(LuanState luan,Object[] args) {
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224 if( step > 0.0 && v > to || step < 0.0 && v < to )
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225 return LuanFunction.NOTHING;
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226 double rtn = v;
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227 v += step;
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228 return rtn;
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229 }
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230 };
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231 }
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232
116
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233 public static LuanFunction values(final Object... args) throws LuanException {
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234 return new LuanFunction() {
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235 int i = 0;
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236
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237 @Override public Object call(LuanState luan,Object[] unused) {
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238 if( ++i > args.length )
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239 return LuanFunction.NOTHING;
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240 return new Object[]{i,args[i-1]};
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241 }
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242 };
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243 }
143
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244
2
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245 }