Mercurial Hosting > luan
annotate src/luan/modules/parsers/LuanToString.java @ 1618:a37ffe2d1b14
fix not_found_handler
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Mon, 14 Jun 2021 18:45:17 -0600 |
| parents | 8852f34a646a |
| children | 582384548a69 |
| rev | line source |
|---|---|
| 1189 | 1 package luan.modules.parsers; |
| 720 | 2 |
| 3 import java.util.List; | |
| 4 import java.util.Map; | |
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5 import java.util.Set; |
| 1553 | 6 import java.util.HashSet; |
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7 import java.util.Collections; |
| 1189 | 8 import luan.Luan; |
| 9 import luan.LuanTable; | |
| 1607 | 10 import luan.LuanFunction; |
| 1189 | 11 import luan.LuanException; |
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12 import luan.LuanRuntimeException; |
| 720 | 13 |
| 14 | |
| 1189 | 15 public final class LuanToString { |
| 1553 | 16 public static class Settings implements Cloneable { |
| 17 public boolean strict = false; | |
| 18 public boolean numberTypes = false; | |
| 19 public boolean compressed = false; | |
| 20 public boolean longStrings = false; | |
| 21 public boolean inline = false; | |
| 22 | |
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23 void applyOptions(LuanTable options) throws LuanException { |
| 1553 | 24 Boolean b; |
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25 b = (Boolean)options.rawGet("strict"); |
| 1553 | 26 if( b != null ) |
| 27 strict = b; | |
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28 b = (Boolean)options.rawGet("number_types"); |
| 1553 | 29 if( b != null ) |
| 30 numberTypes = b; | |
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31 b = (Boolean)options.rawGet("compressed"); |
| 1553 | 32 if( b != null ) |
| 33 compressed = b; | |
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34 b = (Boolean)options.rawGet("long_strings"); |
| 1553 | 35 if( b != null ) |
| 36 longStrings = b; | |
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37 b = (Boolean)options.rawGet("inline"); |
| 1553 | 38 if( b != null ) |
| 39 inline = b; | |
| 40 } | |
| 41 | |
| 42 public Settings cloneSettings() { | |
| 43 try { | |
| 44 return (Settings)clone(); | |
| 45 } catch(CloneNotSupportedException e) { | |
| 46 throw new RuntimeException(e); | |
| 47 } | |
| 48 } | |
| 49 } | |
| 50 private static final Settings keySettings = new Settings(); | |
| 51 private static final Set<String> settingsKeys = new HashSet<String>(); | |
| 52 static { | |
| 53 Collections.addAll(settingsKeys,"strict","number_types","compressed","long_strings","inline"); | |
| 54 } | |
| 55 | |
| 56 private static void checkOptions(LuanTable options) throws LuanException { | |
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57 for( Map.Entry entry : options.rawIterable() ) { |
| 1553 | 58 if( !settingsKeys.contains(entry.getKey()) ) |
| 59 throw new LuanException("invalid option: "+entry.getKey()); | |
| 60 if( !(entry.getValue() instanceof Boolean) ) | |
| 61 throw new LuanException("options values must be boolean"); | |
| 62 } | |
| 63 } | |
| 64 | |
| 65 public final Settings settingsInit = new Settings(); | |
| 1607 | 66 public Luan luan = null; |
| 1553 | 67 private final LuanTable subOptions; |
| 68 | |
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69 public LuanToString(LuanTable options,LuanTable subOptions) throws LuanException { |
| 1553 | 70 this.subOptions = subOptions; |
| 71 if( options != null ) { | |
| 72 checkOptions(options); | |
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73 settingsInit.applyOptions(options); |
| 1553 | 74 } |
| 75 if( subOptions != null ) { | |
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76 for( Map.Entry entry : subOptions.rawIterable() ) { |
| 1553 | 77 /* |
| 78 if( !(entry.getKey() instanceof String) ) | |
| 79 throw new LuanException("sub_options keys must be strings"); | |
| 80 */ | |
| 81 if( !(entry.getValue() instanceof LuanTable) ) | |
| 82 throw new LuanException("sub_options keys must be tables"); | |
| 83 LuanTable tbl = (LuanTable)entry.getValue(); | |
| 84 checkOptions(tbl); | |
| 85 } | |
| 86 } | |
| 87 } | |
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88 |
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89 public String toString(Object obj) throws LuanException { |
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90 StringBuilder sb = new StringBuilder(); |
| 1553 | 91 toString(obj,sb,0,settingsInit); |
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92 return sb.toString(); |
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93 } |
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94 |
| 1553 | 95 private void toString(Object obj,StringBuilder sb,int indented,Settings settings) throws LuanException { |
| 1189 | 96 if( obj == null ) { |
| 97 sb.append( "nil" ); | |
| 98 return; | |
| 99 } | |
| 100 if( obj instanceof Boolean ) { | |
| 101 sb.append( obj ); | |
| 102 return; | |
| 103 } | |
| 104 if( obj instanceof Number ) { | |
| 1553 | 105 toString((Number)obj,sb,settings); |
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106 return; |
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107 } |
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108 if( obj instanceof String ) { |
| 1553 | 109 toString((String)obj,sb,settings); |
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110 return; |
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111 } |
| 1189 | 112 if( obj instanceof LuanTable ) { |
| 1553 | 113 toString((LuanTable)obj,sb,indented,settings); |
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114 return; |
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115 } |
| 1553 | 116 if( settings.strict ) |
| 1409 | 117 throw new LuanException("can't handle type "+Luan.type(obj)); |
| 1189 | 118 sb.append( '<' ); |
| 119 sb.append( obj ); | |
| 120 sb.append( '>' ); | |
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121 } |
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122 |
| 1553 | 123 private void toString(LuanTable tbl,StringBuilder sb,int indented,Settings settings) throws LuanException { |
| 1607 | 124 if( tbl.getMetatable()!=null ) { |
| 125 if( settings.strict ) | |
| 126 throw new LuanException("can't handle metatables when strict"); | |
| 127 if( luan==null ) | |
| 128 throw new LuanException("can't handle metatables when luan isn't set"); | |
| 1612 | 129 LuanFunction pairs = luan.getHandlerFunction("__pairs",tbl); |
| 130 if( pairs != null ) { | |
| 131 sb.append( '{' ); | |
| 132 boolean first = true; | |
| 133 for( Object obj : tbl.iterable(luan) ) { | |
| 134 Map.Entry entry = (Map.Entry)obj; | |
| 135 if( settings.compressed ) { | |
| 136 if( first ) | |
| 137 first = false; | |
| 138 else | |
| 139 sb.append( ',' ); | |
| 140 } else if( settings.inline ) { | |
| 141 if( first ) { | |
| 142 first = false; | |
| 143 sb.append( ' ' ); | |
| 144 } else | |
| 145 sb.append( ", " ); | |
| 146 } else { | |
| 1607 | 147 first = false; |
| 1612 | 148 indent(sb,indented+1); |
| 149 } | |
| 150 toString(entry,sb,indented+1,settings); | |
| 151 } | |
| 152 if( !first ) { | |
| 153 if( settings.compressed ) { | |
| 154 } else if( settings.inline ) { | |
| 1607 | 155 sb.append( ' ' ); |
| 1612 | 156 } else { |
| 157 indent(sb,indented); | |
| 158 } | |
| 1607 | 159 } |
| 1612 | 160 sb.append( '}' ); |
| 161 return; | |
| 1607 | 162 } |
| 163 } | |
| 1189 | 164 List list = tbl.asList(); |
| 165 Map map = tbl.rawMap(); | |
| 166 sb.append( '{' ); | |
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167 boolean first = true; |
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168 for( Object obj : list ) { |
| 1553 | 169 if( settings.compressed ) { |
| 170 if( first ) | |
| 171 first = false; | |
| 172 else | |
| 173 sb.append( ',' ); | |
| 174 } else if( settings.inline ) { | |
| 175 if( first ) { | |
| 176 first = false; | |
| 177 sb.append( ' ' ); | |
| 178 } else | |
| 179 sb.append( ", " ); | |
| 180 } else { | |
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181 indent(sb,indented+1); |
| 1553 | 182 } |
| 183 toString(obj,sb,indented+1,settings); | |
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184 } |
| 1189 | 185 for( Object obj : map.entrySet() ) { |
| 186 Map.Entry entry = (Map.Entry)obj; | |
| 1553 | 187 if( settings.compressed ) { |
| 188 if( first ) | |
| 189 first = false; | |
| 190 else | |
| 191 sb.append( ',' ); | |
| 192 } else if( settings.inline ) { | |
| 193 if( first ) { | |
| 194 first = false; | |
| 195 sb.append( ' ' ); | |
| 196 } else | |
| 197 sb.append( ", " ); | |
| 198 } else { | |
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199 indent(sb,indented+1); |
| 1553 | 200 } |
| 201 toString(entry,sb,indented+1,settings); | |
| 1189 | 202 } |
| 1553 | 203 if( !list.isEmpty() || !map.isEmpty() ) { |
| 204 if( settings.compressed ) { | |
| 205 } else if( settings.inline ) { | |
| 206 sb.append( ' ' ); | |
| 207 } else { | |
| 208 indent(sb,indented); | |
| 209 } | |
| 210 } | |
| 1189 | 211 sb.append( '}' ); |
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212 return; |
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213 } |
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214 |
| 1553 | 215 private void toString(Map.Entry entry,StringBuilder sb,int indented,Settings settings) throws LuanException { |
| 1189 | 216 Object key = entry.getKey(); |
| 217 if( key instanceof String && ((String)key).matches("[a-zA-Z_][a-zA-Z_0-9]*") ) { | |
| 218 sb.append( (String)key ); | |
| 219 } else { | |
| 220 sb.append( '[' ); | |
| 1553 | 221 toString( key, sb, indented, keySettings ); |
| 1189 | 222 sb.append( ']' ); |
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223 } |
| 1553 | 224 sb.append( settings.compressed ? "=" : " = " ); |
| 1554 | 225 if( subOptions != null ) { |
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226 LuanTable options = (LuanTable)subOptions.rawGet(key); |
| 1554 | 227 if( options != null ) { |
| 228 settings = settings.cloneSettings(); | |
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229 settings.applyOptions(options); |
| 1554 | 230 } |
| 1553 | 231 } |
| 232 toString( entry.getValue(), sb, indented, settings ); | |
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233 } |
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234 |
| 1189 | 235 private void indent(StringBuilder sb,int indented) { |
| 236 sb.append( '\n' ); | |
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237 for( int i=0; i<indented; i++ ) { |
| 1189 | 238 sb.append( '\t' ); |
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239 } |
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240 } |
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241 |
| 1553 | 242 private void toString(Number n,StringBuilder sb,Settings settings) throws LuanException { |
| 243 if( settings.numberTypes ) { | |
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244 sb.append( n.getClass().getSimpleName().toLowerCase() ); |
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245 sb.append( '(' ); |
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246 } |
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247 sb.append( Luan.toString(n) ); |
| 1553 | 248 if( settings.numberTypes ) |
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249 sb.append( ')' ); |
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250 } |
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251 |
| 1562 | 252 public static void addNumberTypes(Luan luan,LuanTable env) { |
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253 try { |
| 1562 | 254 LuanTable module = (LuanTable)luan.require("luan:Number.luan"); |
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255 env.rawPut( "double", module.fn(luan,"double") ); |
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256 env.rawPut( "float", module.fn(luan,"float") ); |
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257 env.rawPut( "integer", module.fn(luan,"integer") ); |
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258 env.rawPut( "long", module.fn(luan,"long") ); |
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259 } catch(LuanException e) { |
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260 throw new LuanRuntimeException(e); |
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261 } |
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262 } |
| 1550 | 263 |
| 1553 | 264 private void toString(String s,StringBuilder sb,Settings settings) { |
| 265 if( settings.longStrings ) { | |
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266 StringBuilder start = new StringBuilder("[["); |
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267 if( s.indexOf('\n') != -1 ) |
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268 start.append('\n'); |
| 1550 | 269 StringBuilder end = new StringBuilder("]]"); |
| 270 while( s.contains(end) ) { | |
| 271 start.insert(1,'='); | |
| 272 end.insert(1,'='); | |
| 273 } | |
| 274 sb.append(start); | |
| 275 sb.append(s); | |
| 276 sb.append(end); | |
| 277 return; | |
| 278 } | |
| 279 sb.append( '"' ); | |
| 280 sb.append( Luan.stringEncode(s) ); | |
| 281 sb.append( '"' ); | |
| 282 } | |
| 283 | |
| 720 | 284 } |