Mercurial Hosting > luan
annotate src/luan/Luan.java @ 1590:bce893009f90
add java compiler check
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Wed, 17 Mar 2021 19:50:08 -0600 |
| parents | 2975c932864d |
| children | 46cf5137cb6b |
| rev | line source |
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1 package luan; |
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2 |
| 1454 | 3 import java.lang.reflect.Array; |
| 1424 | 4 import java.io.IOException; |
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5 import java.util.List; |
| 1113 | 6 import java.util.ArrayList; |
| 7 import java.util.Map; | |
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8 import java.util.HashMap; |
| 1113 | 9 import java.util.LinkedHashMap; |
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10 import java.util.Iterator; |
| 1113 | 11 import java.util.Arrays; |
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12 import java.util.Set; |
| 1578 | 13 import java.util.Collection; |
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14 import javax.tools.ToolProvider; |
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15 import goodjava.logging.Logger; |
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16 import goodjava.logging.LoggerFactory; |
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17 import luan.modules.JavaLuan; |
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18 import luan.modules.PackageLuan; |
| 1424 | 19 import luan.modules.IoLuan; |
| 1393 | 20 import luan.modules.logging.LuanLogger; |
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21 import luan.impl.LuanCompiler; |
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22 |
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23 |
| 1578 | 24 public final class Luan { |
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25 private static final Logger logger = LoggerFactory.getLogger(Luan.class); |
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26 |
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27 private final List<LuanClosure> stack = new ArrayList<LuanClosure>(); |
| 1578 | 28 private final Map registry; |
| 29 private final Map localOnly = new HashMap(); | |
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30 |
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31 public Luan() { |
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32 registry = new HashMap(); |
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33 } |
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34 |
| 1578 | 35 public Luan(Luan luan) { |
| 36 LuanMutable.makeImmutable(luan.registry); | |
| 37 this.registry = clone(luan.registry); | |
| 38 } | |
| 39 | |
| 40 private static Object[] clone(Object[] obj) { | |
| 41 if( obj.length == 0 ) | |
| 42 return obj; | |
| 43 Object[] rtn = obj.clone(); | |
| 44 for( int i=0; i<rtn.length; i++ ) { | |
| 45 rtn[i] = clone(rtn[i]); | |
| 46 } | |
| 47 return rtn; | |
| 48 } | |
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49 |
| 1578 | 50 private static Map clone(Map obj) { |
| 51 Map rtn; | |
| 52 try { | |
| 53 rtn = obj.getClass().newInstance(); | |
| 54 } catch(InstantiationException e) { | |
| 55 throw new RuntimeException(e); | |
| 56 } catch(IllegalAccessException e) { | |
| 57 throw new RuntimeException(e); | |
| 58 } | |
| 59 for( Object stupid : obj.entrySet() ) { | |
| 60 Map.Entry entry = (Map.Entry)stupid; | |
| 61 rtn.put( clone(entry.getKey()), clone(entry.getValue()) ); | |
| 62 } | |
| 63 return rtn; | |
| 64 } | |
| 65 | |
| 66 private static Collection clone(Collection obj) { | |
| 67 Collection rtn; | |
| 68 try { | |
| 69 rtn = obj.getClass().newInstance(); | |
| 70 } catch(InstantiationException e) { | |
| 71 throw new RuntimeException(e); | |
| 72 } catch(IllegalAccessException e) { | |
| 73 throw new RuntimeException(e); | |
| 74 } | |
| 75 for( Object entry : (Collection)obj ) { | |
| 76 rtn.add( clone(entry) ); | |
| 77 } | |
| 78 return rtn; | |
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79 } |
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80 |
| 1578 | 81 private static Object clone(Object obj) { |
| 82 if( obj instanceof Object[] ) | |
| 83 return clone((Object[])obj); | |
| 84 if( obj instanceof Map ) | |
| 85 return clone((Map)obj); | |
| 86 if( obj instanceof Collection ) | |
| 87 return clone((Collection)obj); | |
| 88 return obj; | |
| 89 } | |
| 90 | |
| 91 private Map clonedLocals(Object obj) { | |
| 92 Map locals = (Map)registry.get("Luan.local"); | |
| 93 if( locals==null ) { | |
| 94 locals = new HashMap(); | |
| 95 registry.put("Luan.local",locals); | |
| 96 } | |
| 97 Map local = (Map)locals.get(obj); | |
| 98 if( local==null ) { | |
| 99 local = new HashMap(); | |
| 100 locals.put(obj,local); | |
| 101 } | |
| 102 return local; | |
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103 } |
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104 |
| 1578 | 105 public Object getLocalCloned(Object obj,Object key) { |
| 106 return clonedLocals(obj).get(key); | |
| 107 } | |
| 108 | |
| 109 public void setLocalCloned(Object obj,Object key,Object value) { | |
| 110 if( value==null ) | |
| 111 clonedLocals(obj).remove(key); | |
| 112 else | |
| 113 clonedLocals(obj).put(key,value); | |
| 114 } | |
| 115 | |
| 116 private Map onlyLocals(Object obj) { | |
| 117 Map local = (Map)localOnly.get(obj); | |
| 118 if( local==null ) { | |
| 119 local = new HashMap(); | |
| 120 localOnly.put(obj,local); | |
| 121 } | |
| 122 return local; | |
| 123 } | |
| 124 | |
| 125 public Object getLocalOnly(Object obj,Object key) { | |
| 126 return onlyLocals(obj).get(key); | |
| 127 } | |
| 128 | |
| 129 public void setLocalOnly(Object obj,Object key,Object value) { | |
| 130 if( value==null ) | |
| 131 onlyLocals(obj).remove(key); | |
| 132 else | |
| 133 onlyLocals(obj).put(key,value); | |
| 134 } | |
| 1561 | 135 |
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136 public LuanClosure peek() { |
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137 return peek(1); |
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138 } |
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139 |
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140 public LuanClosure peek(int i) { |
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141 int n = stack.size(); |
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142 return n < i ? null : stack.get(n-i); |
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143 } |
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144 |
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145 void push(LuanClosure closure) { |
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146 stack.add(closure); |
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147 } |
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148 |
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149 void pop() { |
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150 stack.remove(stack.size()-1); |
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151 } |
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152 |
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153 public Map registry() { |
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154 return registry; |
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155 } |
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156 |
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157 public Object eval(String cmd,Object... args) throws LuanException { |
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158 return load(cmd,"eval",false).call(this,args); |
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159 } |
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160 |
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161 public Object require(String modName) throws LuanException { |
| 1580 | 162 return require(modName,null); |
| 163 } | |
| 164 | |
| 165 public Object require(String modName,LuanTable options) throws LuanException { | |
| 166 return PackageLuan.require(this,modName,options); | |
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167 } |
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168 |
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169 public String luanToString(Object obj) throws LuanException { |
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170 if( obj instanceof LuanTable ) { |
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171 LuanTable tbl = (LuanTable)obj; |
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172 return tbl.toStringLuan(this); |
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173 } |
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174 if( obj == null ) |
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175 return "nil"; |
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176 if( obj instanceof Number ) |
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177 return Luan.toString((Number)obj); |
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178 if( obj instanceof byte[] ) |
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179 return "binary: " + Integer.toHexString(obj.hashCode()); |
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180 return obj.toString(); |
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181 } |
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182 |
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183 public Object index(Object obj,Object key) throws LuanException { |
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184 if( obj instanceof LuanTable ) { |
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185 LuanTable tbl = (LuanTable)obj; |
| 1562 | 186 return tbl.get(this,key); |
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187 } |
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188 if( obj != null && peek().javaOk ) |
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189 return JavaLuan.__index(this,obj,key); |
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190 throw new LuanException("attempt to index a " + Luan.type(obj) + " value" ); |
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191 } |
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192 |
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193 |
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194 public boolean isLessThan(Object o1,Object o2) throws LuanException { |
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195 if( o1 instanceof Number && o2 instanceof Number ) { |
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196 Number n1 = (Number)o1; |
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197 Number n2 = (Number)o2; |
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198 return n1.doubleValue() < n2.doubleValue(); |
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199 } |
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200 if( o1 instanceof String && o2 instanceof String ) { |
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201 String s1 = (String)o1; |
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202 String s2 = (String)o2; |
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203 return s1.compareTo(s2) < 0; |
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204 } |
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205 LuanFunction fn = getBinHandler("__lt",o1,o2); |
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206 if( fn != null ) |
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207 return Luan.checkBoolean( Luan.first(fn.call(this,o1,o2)) ); |
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208 throw new LuanException( "attempt to compare " + Luan.type(o1) + " with " + Luan.type(o2) ); |
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209 } |
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210 |
| 1578 | 211 public LuanFunction getBinHandler(String op,Object o1,Object o2) throws LuanException { |
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212 if( o1 instanceof LuanTable ) { |
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213 LuanFunction f1 = getHandlerFunction(op,(LuanTable)o1); |
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214 if( f1 != null ) |
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215 return f1; |
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216 } |
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217 return o2 instanceof LuanTable ? getHandlerFunction(op,(LuanTable)o2) : null; |
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218 } |
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219 |
| 1578 | 220 public LuanFunction getHandlerFunction(String op,LuanTable t) throws LuanException { |
| 221 Object f = t.getHandler(this,op); | |
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222 if( f == null ) |
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223 return null; |
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224 return Luan.checkFunction(f); |
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225 } |
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226 |
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227 public LuanTable toTable(Object obj) { |
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228 if( obj == null ) |
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229 return null; |
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230 if( obj instanceof LuanTable ) |
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231 return (LuanTable)obj; |
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232 if( obj instanceof List ) { |
| 1562 | 233 return new LuanTable((List)obj); |
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234 } |
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235 if( obj instanceof Map ) { |
| 1562 | 236 return new LuanTable((Map)obj); |
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237 } |
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238 if( obj instanceof Set ) { |
| 1562 | 239 return new LuanTable((Set)obj); |
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240 } |
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241 Class cls = obj.getClass(); |
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242 if( cls.isArray() ) { |
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243 if( cls.getComponentType().isPrimitive() ) { |
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244 int len = Array.getLength(obj); |
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245 List list = new ArrayList(); |
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246 for( int i=0; i<len; i++ ) { |
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247 list.add(Array.get(obj,i)); |
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248 } |
| 1562 | 249 return new LuanTable(list); |
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250 } else { |
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251 Object[] a = (Object[])obj; |
| 1562 | 252 return new LuanTable(Arrays.asList(a)); |
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253 } |
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254 } |
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255 return null; |
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256 } |
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257 |
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258 |
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259 |
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260 // static |
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261 |
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262 public static void main(String[] args) throws LuanException { |
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263 if( ToolProvider.getSystemJavaCompiler()==null ) |
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264 throw new LuanException("java compiler not available"); |
| 1454 | 265 Luan luan = new Luan(); |
| 1424 | 266 LuanFunction fn = loadClasspath(luan,"luan/cmd_line.luan"); |
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267 fn.call(luan,(Object[])args); |
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268 } |
| 1454 | 269 |
| 270 public static LuanFunction loadClasspath(Luan luan,String classpath) | |
| 271 throws LuanException | |
| 272 { | |
| 1424 | 273 try { |
| 1454 | 274 String src = IoLuan.classpath(luan,classpath).read_text(); |
| 275 return luan.load(src,"classpath:"+classpath,true); | |
| 276 } catch(IOException e) { | |
| 277 throw new RuntimeException(e); | |
| 1424 | 278 } |
| 279 } | |
| 1454 | 280 |
|
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281 public static Object first(Object obj) { |
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282 if( !(obj instanceof Object[]) ) |
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283 return obj; |
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284 Object[] a = (Object[])obj; |
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285 return a.length==0 ? null : a[0]; |
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286 } |
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287 |
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288 public static Object[] array(Object obj) { |
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289 return obj instanceof Object[] ? (Object[])obj : new Object[]{obj}; |
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290 } |
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291 |
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292 public static String type(Object obj) { |
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293 if( obj == null ) |
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294 return "nil"; |
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295 if( obj instanceof String ) |
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296 return "string"; |
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297 if( obj instanceof Boolean ) |
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298 return "boolean"; |
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299 if( obj instanceof Number ) |
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300 return "number"; |
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301 if( obj instanceof LuanTable ) |
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302 return "table"; |
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303 if( obj instanceof LuanFunction ) |
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304 return "function"; |
|
113
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305 if( obj instanceof byte[] ) |
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306 return "binary"; |
|
513
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307 return "java"; |
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308 } |
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309 |
|
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310 public static String toString(Number n) { |
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311 if( n instanceof Integer ) |
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312 return n.toString(); |
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313 int i = n.intValue(); |
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314 if( i == n.doubleValue() ) |
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315 return Integer.toString(i); |
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316 String s = n.toString(); |
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317 int iE = s.indexOf('E'); |
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318 String ending = null; |
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319 if( iE != -1 ) { |
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320 ending = s.substring(iE); |
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321 s = s.substring(0,iE); |
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322 } |
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323 if( s.endsWith(".0") ) |
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324 s = s.substring(0,s.length()-2); |
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325 if( ending != null ) |
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326 s += ending; |
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327 return s; |
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328 } |
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329 |
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330 public static Integer asInteger(Object obj) { |
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331 if( obj instanceof Integer ) |
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332 return (Integer)obj; |
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333 if( !(obj instanceof Number) ) |
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334 return null; |
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335 Number n = (Number)obj; |
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336 int i = n.intValue(); |
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337 return i==n.doubleValue() ? Integer.valueOf(i) : null; |
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338 } |
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339 |
| 1442 | 340 public static Long asLong(Object obj) { |
| 341 if( obj instanceof Long ) | |
| 342 return (Long)obj; | |
| 343 if( !(obj instanceof Number) ) | |
| 344 return null; | |
| 345 Number n = (Number)obj; | |
| 346 long i = n.longValue(); | |
| 347 return i==n.doubleValue() ? Long.valueOf(i) : null; | |
| 348 } | |
| 349 | |
| 350 public static Float asFloat(Object obj) { | |
| 351 if( obj instanceof Float ) | |
| 352 return (Float)obj; | |
| 353 if( !(obj instanceof Number) ) | |
| 354 return null; | |
| 355 Number n = (Number)obj; | |
| 356 float i = n.floatValue(); | |
| 357 return i==n.doubleValue() ? Float.valueOf(i) : null; | |
| 358 } | |
| 359 | |
| 360 public static Double asDouble(Object obj) { | |
| 361 if( obj instanceof Double ) | |
| 362 return (Double)obj; | |
| 363 if( !(obj instanceof Number) ) | |
| 364 return null; | |
| 365 Number n = (Number)obj; | |
| 366 double i = n.doubleValue(); | |
| 367 return Double.valueOf(i); | |
| 368 } | |
| 369 | |
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370 public static String stringEncode(String s) { |
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371 s = s.replace("\\","\\\\"); |
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372 s = s.replace("\u0007","\\a"); |
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373 s = s.replace("\b","\\b"); |
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374 s = s.replace("\f","\\f"); |
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375 s = s.replace("\n","\\n"); |
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376 s = s.replace("\r","\\r"); |
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377 s = s.replace("\t","\\t"); |
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378 s = s.replace("\u000b","\\v"); |
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379 s = s.replace("\"","\\\""); |
| 420 | 380 s = s.replace("\'","\\'"); |
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381 return s; |
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382 } |
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383 |
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384 |
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385 public static Boolean checkBoolean(Object obj) throws LuanException { |
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386 if( obj instanceof Boolean ) |
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387 return (Boolean)obj; |
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388 throw new LuanException("attempt to use a " + Luan.type(obj) + " value as a boolean" ); |
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389 } |
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390 |
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391 public static String checkString(Object obj) throws LuanException { |
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392 if( obj instanceof String ) |
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393 return (String)obj; |
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394 throw new LuanException("attempt to use a " + Luan.type(obj) + " value as a string" ); |
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395 } |
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396 |
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397 public static LuanFunction checkFunction(Object obj) throws LuanException { |
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398 if( obj instanceof LuanFunction ) |
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399 return (LuanFunction)obj; |
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400 throw new LuanException("attempt to call a " + Luan.type(obj) + " value" ); |
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401 } |
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402 |
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403 public LuanFunction load(String text,String sourceName,boolean persist,LuanTable env) |
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404 throws LuanException |
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405 { |
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406 return LuanCompiler.compile(this,text,sourceName,persist,env); |
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407 } |
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408 |
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409 public LuanFunction load(String text,String sourceName,boolean persist) |
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410 throws LuanException |
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411 { |
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412 return load(text,sourceName,persist,null); |
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413 } |
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414 |
| 1113 | 415 public static Object toJava(Object obj) throws LuanException { |
| 416 if( !(obj instanceof LuanTable) ) | |
| 417 return obj; | |
| 418 LuanTable tbl = (LuanTable)obj; | |
| 1464 | 419 if( !tbl.isMap() ) { |
| 1113 | 420 List list = new ArrayList(); |
| 421 for( Object el : tbl.asList() ) { | |
| 422 list.add( toJava(el) ); | |
| 423 } | |
| 424 return list; | |
| 425 } else { | |
| 426 Map map = new LinkedHashMap(); | |
| 427 Iterator<Map.Entry> iter = tbl.rawIterator(); | |
| 428 while( iter.hasNext() ) { | |
| 429 Map.Entry entry = iter.next(); | |
| 430 map.put( toJava(entry.getKey()), toJava(entry.getValue()) ); | |
| 431 } | |
| 432 return map; | |
| 433 } | |
| 434 } | |
| 1330 | 435 |
| 436 | |
| 437 // security | |
| 438 | |
| 439 public interface Security { | |
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440 public void check(Luan luan,LuanClosure closure,String op,Object... args) throws LuanException; |
| 1330 | 441 } |
| 442 | |
| 443 private static String SECURITY_KEY = "Luan.Security"; | |
| 444 | |
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445 public static void checkSecurity(Luan luan,String op,Object... args) throws LuanException { |
| 1330 | 446 check(luan,1,op,args); |
| 447 } | |
| 448 | |
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449 public static void checkCallerSecurity(Luan luan,String op,Object... args) throws LuanException { |
| 1330 | 450 check(luan,2,op,args); |
| 451 } | |
| 452 | |
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453 private static void check(Luan luan,int i,String op,Object... args) throws LuanException { |
| 1330 | 454 Security s = (Security)luan.registry().get(SECURITY_KEY); |
| 455 if( s!=null ) | |
| 1432 | 456 s.check(luan,luan.peek(i),op,args); |
| 1330 | 457 } |
| 458 | |
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459 public static Security setSecurity(Luan luan,Security s) { |
| 1330 | 460 return (Security)luan.registry().put(SECURITY_KEY,s); |
| 461 } | |
| 462 | |
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463 } |