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annotate src/luan/Luan.java @ 1434:56fb5cd8228d

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cache compiled code in temp files
author Franklin Schmidt <fschmidt@gmail.com>
date Sun, 29 Dec 2019 15:25:07 -0700
parents d7644b21b128
children bbc41b305935
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1
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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1 package luan;
2df768b926aa start Luan
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2
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3 import java.lang.reflect.Array;
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4 import java.io.IOException;
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5 import java.util.List;
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6 import java.util.ArrayList;
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7 import java.util.Map;
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8 import java.util.HashMap;
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9 import java.util.LinkedHashMap;
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10 import java.util.Iterator;
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11 import java.util.Arrays;
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12 import java.util.Set;
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13 import goodjava.logging.Logger;
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14 import goodjava.logging.LoggerFactory;
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15 import luan.modules.JavaLuan;
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16 import luan.modules.PackageLuan;
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17 import luan.modules.IoLuan;
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18 import luan.modules.logging.LuanLogger;
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19 import luan.impl.LuanCompiler;
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20
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2df768b926aa start Luan
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21
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22 public final class Luan implements LuanCloneable {
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23 private static final Logger logger = LoggerFactory.getLogger(Luan.class);
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24
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25 private final List<LuanClosure> stack = new ArrayList<LuanClosure>();
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26 private Map registry;
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27 private boolean isLocked = false;
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28
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29 public Luan() {
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30 registry = new HashMap();
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31 }
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32
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33 private Luan(Luan luan) {}
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34
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35 @Override public Luan shallowClone() {
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36 return new Luan(this);
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37 }
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38
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39 @Override public void deepenClone(LuanCloneable dc,LuanCloner cloner) {
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40 Luan clone = (Luan)dc;
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41 clone.registry = cloner.clone(registry);
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42 if( cloner.type == LuanCloner.Type.INCREMENTAL )
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43 isLocked = true;
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44 }
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45
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46 public LuanClosure peek() {
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47 return peek(1);
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48 }
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49
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50 public LuanClosure peek(int i) {
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51 int n = stack.size();
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52 return n < i ? null : stack.get(n-i);
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53 }
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54
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55 void push(LuanClosure closure) {
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56 if( isLocked )
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57 throw new RuntimeException(this+" is locked "+closure);
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58 stack.add(closure);
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59 }
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60
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61 void pop() {
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62 stack.remove(stack.size()-1);
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63 }
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64
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65 public Map registry() {
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66 return registry;
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67 }
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68
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69 public Object eval(String cmd,Object... args) throws LuanException {
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70 return load(cmd,"eval",false).call(args);
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71 }
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72
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73 public Object require(String modName) throws LuanException {
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74 return PackageLuan.require(this,modName);
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75 }
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76
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77 public static String luanToString(Object obj) throws LuanException {
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78 if( obj instanceof LuanTable ) {
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79 LuanTable tbl = (LuanTable)obj;
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80 return tbl.toStringLuan();
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81 }
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82 if( obj == null )
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83 return "nil";
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84 if( obj instanceof Number )
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85 return Luan.toString((Number)obj);
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86 if( obj instanceof byte[] )
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87 return "binary: " + Integer.toHexString(obj.hashCode());
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88 return obj.toString();
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89 }
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90
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91 public Object index(Object obj,Object key) throws LuanException {
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92 if( obj instanceof LuanTable ) {
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93 LuanTable tbl = (LuanTable)obj;
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94 return tbl.get(key);
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95 }
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96 if( obj != null && peek().javaOk )
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97 return JavaLuan.__index(this,obj,key);
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98 throw new LuanException("attempt to index a " + Luan.type(obj) + " value" );
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99 }
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100
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101
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102 public static boolean isLessThan(Object o1,Object o2) throws LuanException {
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103 if( o1 instanceof Number && o2 instanceof Number ) {
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104 Number n1 = (Number)o1;
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105 Number n2 = (Number)o2;
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106 return n1.doubleValue() < n2.doubleValue();
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107 }
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108 if( o1 instanceof String && o2 instanceof String ) {
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109 String s1 = (String)o1;
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110 String s2 = (String)o2;
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111 return s1.compareTo(s2) < 0;
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112 }
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113 LuanFunction fn = getBinHandler("__lt",o1,o2);
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114 if( fn != null )
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115 return Luan.checkBoolean( Luan.first(fn.call(o1,o2)) );
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116 throw new LuanException( "attempt to compare " + Luan.type(o1) + " with " + Luan.type(o2) );
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117 }
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118
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119 public static LuanFunction getBinHandler(String op,Object o1,Object o2) throws LuanException {
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120 if( o1 instanceof LuanTable ) {
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121 LuanFunction f1 = getHandlerFunction(op,(LuanTable)o1);
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122 if( f1 != null )
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123 return f1;
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124 }
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125 return o2 instanceof LuanTable ? getHandlerFunction(op,(LuanTable)o2) : null;
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126 }
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127
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128 public static LuanFunction getHandlerFunction(String op,LuanTable t) throws LuanException {
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129 Object f = t.getHandler(op);
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130 if( f == null )
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131 return null;
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132 return Luan.checkFunction(f);
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133 }
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134
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135 public LuanTable toTable(Object obj) {
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136 if( obj == null )
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137 return null;
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138 if( obj instanceof LuanTable )
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139 return (LuanTable)obj;
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140 if( obj instanceof List ) {
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141 return new LuanTable(this,(List)obj);
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142 }
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143 if( obj instanceof Map ) {
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144 return new LuanTable(this,(Map)obj);
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145 }
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146 if( obj instanceof Set ) {
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147 return new LuanTable(this,(Set)obj);
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148 }
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149 Class cls = obj.getClass();
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150 if( cls.isArray() ) {
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151 if( cls.getComponentType().isPrimitive() ) {
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152 int len = Array.getLength(obj);
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153 List list = new ArrayList();
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154 for( int i=0; i<len; i++ ) {
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155 list.add(Array.get(obj,i));
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156 }
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157 return new LuanTable(this,list);
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158 } else {
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159 Object[] a = (Object[])obj;
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160 return new LuanTable(this,Arrays.asList(a));
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161 }
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162 }
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163 return null;
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164 }
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165
1393
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166 public Logger getLogger(Class cls) {
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167 return LuanLogger.getLogger(this,cls);
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168 }
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169
1333
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170
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171
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diff changeset
172 // static
1
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173
481
5d4a78c93383 luan errors are now tables
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174 public static void main(String[] args) throws LuanException {
1424
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175 Luan luan = new Luan();
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176 LuanFunction fn = loadClasspath(luan,"luan/cmd_line.luan");
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177 fn.call((Object[])args);
134
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178 }
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179
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180 public static LuanFunction loadClasspath(Luan luan,String classpath)
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181 throws LuanException
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182 {
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183 try {
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184 String src = IoLuan.classpath(luan,classpath).read_text();
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185 return luan.load(src,"classpath:"+classpath,true);
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186 } catch(IOException e) {
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187 throw new RuntimeException(e);
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188 }
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189 }
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190
111
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191 public static Object first(Object obj) {
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192 if( !(obj instanceof Object[]) )
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193 return obj;
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194 Object[] a = (Object[])obj;
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195 return a.length==0 ? null : a[0];
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196 }
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197
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198 public static Object[] array(Object obj) {
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199 return obj instanceof Object[] ? (Object[])obj : new Object[]{obj};
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200 }
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201
1
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202 public static String type(Object obj) {
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203 if( obj == null )
105
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diff changeset
204 return "nil";
1
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205 if( obj instanceof String )
105
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diff changeset
206 return "string";
1
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207 if( obj instanceof Boolean )
105
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diff changeset
208 return "boolean";
46
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209 if( obj instanceof Number )
105
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210 return "number";
85
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211 if( obj instanceof LuanTable )
105
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212 return "table";
85
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213 if( obj instanceof LuanFunction )
105
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214 return "function";
113
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diff changeset
215 if( obj instanceof byte[] )
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diff changeset
216 return "binary";
513
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diff changeset
217 return "java";
1
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218 }
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219
46
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diff changeset
220 public static String toString(Number n) {
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221 if( n instanceof Integer )
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diff changeset
222 return n.toString();
255
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parents: 226
diff changeset
223 int i = n.intValue();
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diff changeset
224 if( i == n.doubleValue() )
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diff changeset
225 return Integer.toString(i);
46
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diff changeset
226 String s = n.toString();
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diff changeset
227 int iE = s.indexOf('E');
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diff changeset
228 String ending = null;
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diff changeset
229 if( iE != -1 ) {
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diff changeset
230 ending = s.substring(iE);
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diff changeset
231 s = s.substring(0,iE);
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diff changeset
232 }
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233 if( s.endsWith(".0") )
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diff changeset
234 s = s.substring(0,s.length()-2);
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diff changeset
235 if( ending != null )
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diff changeset
236 s += ending;
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diff changeset
237 return s;
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diff changeset
238 }
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diff changeset
239
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diff changeset
240 public static Integer asInteger(Object obj) {
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diff changeset
241 if( obj instanceof Integer )
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diff changeset
242 return (Integer)obj;
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diff changeset
243 if( !(obj instanceof Number) )
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diff changeset
244 return null;
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diff changeset
245 Number n = (Number)obj;
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diff changeset
246 int i = n.intValue();
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diff changeset
247 return i==n.doubleValue() ? Integer.valueOf(i) : null;
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diff changeset
248 }
66
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diff changeset
249
88
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diff changeset
250 public static String stringEncode(String s) {
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diff changeset
251 s = s.replace("\\","\\\\");
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diff changeset
252 s = s.replace("\u0007","\\a");
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diff changeset
253 s = s.replace("\b","\\b");
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diff changeset
254 s = s.replace("\f","\\f");
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diff changeset
255 s = s.replace("\n","\\n");
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diff changeset
256 s = s.replace("\r","\\r");
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diff changeset
257 s = s.replace("\t","\\t");
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diff changeset
258 s = s.replace("\u000b","\\v");
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diff changeset
259 s = s.replace("\"","\\\"");
420
e9d4d5854e54 add String.encode
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diff changeset
260 s = s.replace("\'","\\'");
88
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diff changeset
261 return s;
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diff changeset
262 }
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diff changeset
263
647
8e8c30b72e9b move methods from LuanState to Luan
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parents: 574
diff changeset
264
8e8c30b72e9b move methods from LuanState to Luan
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parents: 574
diff changeset
265 public static Boolean checkBoolean(Object obj) throws LuanException {
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parents: 574
diff changeset
266 if( obj instanceof Boolean )
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parents: 574
diff changeset
267 return (Boolean)obj;
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parents: 574
diff changeset
268 throw new LuanException("attempt to use a " + Luan.type(obj) + " value as a boolean" );
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diff changeset
269 }
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diff changeset
270
8e8c30b72e9b move methods from LuanState to Luan
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parents: 574
diff changeset
271 public static String checkString(Object obj) throws LuanException {
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272 if( obj instanceof String )
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273 return (String)obj;
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274 throw new LuanException("attempt to use a " + Luan.type(obj) + " value as a string" );
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275 }
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276
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277 public static LuanFunction checkFunction(Object obj) throws LuanException {
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278 if( obj instanceof LuanFunction )
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279 return (LuanFunction)obj;
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280 throw new LuanException("attempt to call a " + Luan.type(obj) + " value" );
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281 }
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282
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283 public LuanFunction load(String text,String sourceName,boolean persist,LuanTable env)
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284 throws LuanException
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285 {
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286 return LuanCompiler.compile(this,text,sourceName,persist,env);
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287 }
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288
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289 public LuanFunction load(String text,String sourceName,boolean persist)
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290 throws LuanException
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291 {
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292 return load(text,sourceName,persist,null);
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293 }
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294
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295 public static Object toJava(Object obj) throws LuanException {
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296 if( !(obj instanceof LuanTable) )
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297 return obj;
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298 LuanTable tbl = (LuanTable)obj;
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299 if( tbl.isList() ) {
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300 List list = new ArrayList();
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301 for( Object el : tbl.asList() ) {
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302 list.add( toJava(el) );
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303 }
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304 return list;
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305 } else {
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306 Map map = new LinkedHashMap();
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307 Iterator<Map.Entry> iter = tbl.rawIterator();
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308 while( iter.hasNext() ) {
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309 Map.Entry entry = iter.next();
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310 map.put( toJava(entry.getKey()), toJava(entry.getValue()) );
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311 }
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312 return map;
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313 }
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314 }
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315
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316
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317 // security
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318
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319 public interface Security {
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320 public void check(Luan luan,LuanClosure closure,String op,Object... args) throws LuanException;
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321 }
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322
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323 private static String SECURITY_KEY = "Luan.Security";
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324
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325 public static void checkSecurity(Luan luan,String op,Object... args) throws LuanException {
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326 check(luan,1,op,args);
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327 }
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328
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329 public static void checkCallerSecurity(Luan luan,String op,Object... args) throws LuanException {
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330 check(luan,2,op,args);
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331 }
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332
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333 private static void check(Luan luan,int i,String op,Object... args) throws LuanException {
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334 Security s = (Security)luan.registry().get(SECURITY_KEY);
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335 if( s!=null )
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336 s.check(luan,luan.peek(i),op,args);
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337 }
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338
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339 public static Security setSecurity(Luan luan,Security s) {
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340 return (Security)luan.registry().put(SECURITY_KEY,s);
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341 }
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342
1
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343 }