svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.expressionevaluator / org.gvsig.expressionevaluator.lib / org.gvsig.expressionevaluator.lib.impl / src / main / java / org / gvsig / expressionevaluator / impl / HostExpressionUtils.java @ 47293
History | View | Annotate | Download (14.6 KB)
| 1 |
package org.gvsig.expressionevaluator.impl; |
|---|---|
| 2 |
|
| 3 |
import java.util.ArrayList; |
| 4 |
import java.util.List; |
| 5 |
import java.util.Objects; |
| 6 |
import org.apache.commons.lang3.StringUtils; |
| 7 |
import org.gvsig.expressionevaluator.Code; |
| 8 |
import org.gvsig.expressionevaluator.CodeBuilder; |
| 9 |
import org.gvsig.expressionevaluator.Codes; |
| 10 |
import org.gvsig.expressionevaluator.Compiler; |
| 11 |
import org.gvsig.expressionevaluator.Expression; |
| 12 |
import org.gvsig.expressionevaluator.ExpressionBuilder; |
| 13 |
import org.gvsig.expressionevaluator.ExpressionEvaluatorLocator; |
| 14 |
import org.gvsig.expressionevaluator.ExpressionEvaluatorManager; |
| 15 |
import org.gvsig.expressionevaluator.Interpreter; |
| 16 |
import org.gvsig.expressionevaluator.SymbolTable; |
| 17 |
import org.gvsig.expressionevaluator.impl.function.programming.$HostExpressionFunction; |
| 18 |
import org.gvsig.expressionevaluator.impl.function.programming.CodeBlockFunction; |
| 19 |
import org.gvsig.expressionevaluator.impl.function.programming.CodeBlockWithExceptFunction; |
| 20 |
import org.gvsig.expressionevaluator.spi.UndefinedSymbolException; |
| 21 |
import org.gvsig.tools.exception.BaseException; |
| 22 |
import org.gvsig.tools.visitor.VisitCanceledException; |
| 23 |
|
| 24 |
/**
|
| 25 |
*
|
| 26 |
* @author jjdelcerro
|
| 27 |
*/
|
| 28 |
public class HostExpressionUtils { |
| 29 |
|
| 30 |
public static boolean hasHostExpressions(Code statement) { |
| 31 |
try {
|
| 32 |
statement.accept( |
| 33 |
(Object code) -> {
|
| 34 |
if( !(code instanceof Code.Callable) ) { |
| 35 |
return;
|
| 36 |
} |
| 37 |
Code.Callable callable = (Code.Callable) code; |
| 38 |
if( StringUtils.equalsIgnoreCase(callable.name(), ExpressionBuilder.FUNCTION_$HOSTEXPRESSION) ) { |
| 39 |
throw new VisitCanceledException(); |
| 40 |
} |
| 41 |
}, null
|
| 42 |
); |
| 43 |
return false; |
| 44 |
} catch(VisitCanceledException ex) {
|
| 45 |
return true; |
| 46 |
} catch(BaseException ex) {
|
| 47 |
throw new RuntimeException("Can't check host expressions", ex); |
| 48 |
} |
| 49 |
} |
| 50 |
|
| 51 |
public static boolean hasHostExpressions(ExpressionBuilder.Value statement) { |
| 52 |
List<ExpressionBuilder.Function> hostExpressions = new ArrayList<>(); |
| 53 |
statement.accept((ExpressionBuilder.Visitable value) -> {
|
| 54 |
if( !(value instanceof ExpressionBuilder.Function) ) { |
| 55 |
return;
|
| 56 |
} |
| 57 |
ExpressionBuilder.Function function = (ExpressionBuilder.Function) value; |
| 58 |
if( StringUtils.equalsIgnoreCase(function.name(), ExpressionBuilder.FUNCTION_$HOSTEXPRESSION) ) { |
| 59 |
hostExpressions.add(function); |
| 60 |
} |
| 61 |
}, null);
|
| 62 |
return !hostExpressions.isEmpty();
|
| 63 |
} |
| 64 |
|
| 65 |
public static boolean hasHostExpressions(String statement) { |
| 66 |
org.gvsig.expressionevaluator.Compiler compiler = createCompiler(); |
| 67 |
Code code = compiler.compileExpression(statement); |
| 68 |
return hasHostExpressions(code);
|
| 69 |
} |
| 70 |
|
| 71 |
public static List<Code> getHostExpressions(Code statement) throws Exception { |
| 72 |
List<Code> hostExpressions = new ArrayList<>(); |
| 73 |
statement.accept( |
| 74 |
(Object code) -> {
|
| 75 |
if( !(code instanceof Code.Callable) ) { |
| 76 |
return;
|
| 77 |
} |
| 78 |
Code.Callable callable = (Code.Callable) code; |
| 79 |
if( StringUtils.equalsIgnoreCase(callable.name(), ExpressionBuilder.FUNCTION_$HOSTEXPRESSION) ) { |
| 80 |
hostExpressions.add(callable); |
| 81 |
} |
| 82 |
}, null
|
| 83 |
); |
| 84 |
return hostExpressions;
|
| 85 |
} |
| 86 |
|
| 87 |
public static List<ExpressionBuilder.Value> getHostExpressions(ExpressionBuilder.Value statement) throws Exception { |
| 88 |
List<ExpressionBuilder.Value> hostExpressions = new ArrayList<>(); |
| 89 |
ExpressionBuilder.Value newstatement = (ExpressionBuilder.Value) statement.clone(); |
| 90 |
newstatement.accept((ExpressionBuilder.Visitable value) -> {
|
| 91 |
if( !(value instanceof ExpressionBuilder.Function) ) { |
| 92 |
return;
|
| 93 |
} |
| 94 |
ExpressionBuilder.Function function = (ExpressionBuilder.Function) value; |
| 95 |
if( StringUtils.equalsIgnoreCase(function.name(), ExpressionBuilder.FUNCTION_$HOSTEXPRESSION) ) { |
| 96 |
hostExpressions.add(function); |
| 97 |
} |
| 98 |
}, null);
|
| 99 |
return hostExpressions;
|
| 100 |
} |
| 101 |
|
| 102 |
public static ExpressionBuilder.Value getHostExpressionValue(ExpressionBuilder.Function hostExpression, ExpressionBuilder expbuilder) { |
| 103 |
return getHostExpressionValue(hostExpression, expbuilder, null, null); |
| 104 |
} |
| 105 |
|
| 106 |
public static ExpressionBuilder.Value getHostExpressionValue(ExpressionBuilder.Function hostExpression, ExpressionBuilder expbuilder, SymbolTable symbolTable) { |
| 107 |
Interpreter interpreter = createInterpreter(); |
| 108 |
if( symbolTable!=null ) { |
| 109 |
interpreter.setSymbolTable(symbolTable); |
| 110 |
} |
| 111 |
return getHostExpressionValue(hostExpression, expbuilder, null, interpreter); |
| 112 |
} |
| 113 |
|
| 114 |
public static ExpressionBuilder.Value getHostExpressionValue(ExpressionBuilder.Function hostExpression, ExpressionBuilder expbuilder, org.gvsig.expressionevaluator.Compiler compiler, Interpreter interpreter) { |
| 115 |
if( expbuilder == null ) { |
| 116 |
expbuilder = createExpressionBuilder(); |
| 117 |
} |
| 118 |
if( compiler == null ) { |
| 119 |
compiler = createCompiler(); |
| 120 |
} |
| 121 |
if( interpreter == null ) { |
| 122 |
interpreter = createInterpreter(); |
| 123 |
} |
| 124 |
List<ExpressionBuilder.Value> params = hostExpression.parameters();
|
| 125 |
String mode_specifier;
|
| 126 |
ExpressionBuilder.Value exp; |
| 127 |
switch(params.size()) {
|
| 128 |
case 1: |
| 129 |
default:
|
| 130 |
exp = params.get(0);
|
| 131 |
mode_specifier = $HostExpressionFunction.MODE_SPECIFIER_IN;
|
| 132 |
break;
|
| 133 |
case 2: |
| 134 |
exp = params.get(0);
|
| 135 |
mode_specifier = Objects.toString(((ExpressionBuilder.Constant)params.get(1)).value(),"IN").toUpperCase(); |
| 136 |
break;
|
| 137 |
} |
| 138 |
Code code = compiler.compileExpression(exp.toString()); |
| 139 |
Object v = interpreter.run(code);
|
| 140 |
ExpressionBuilder.Value value; |
| 141 |
switch(mode_specifier) {
|
| 142 |
case $HostExpressionFunction.MODE_SPECIFIER_IN: |
| 143 |
default:
|
| 144 |
value = expbuilder.constant(v); |
| 145 |
break;
|
| 146 |
case $HostExpressionFunction.MODE_SPECIFIER_OUT: |
| 147 |
case $HostExpressionFunction.MODE_SPECIFIER_INOUT: |
| 148 |
throw new UnsupportedOperationException("Mode OUT/INOUT not implemented"); |
| 149 |
case $HostExpressionFunction.MODE_SPECIFIER_ID: |
| 150 |
value = expbuilder.variable(Objects.toString(v, null));
|
| 151 |
break;
|
| 152 |
} |
| 153 |
return value;
|
| 154 |
} |
| 155 |
|
| 156 |
public static List<ExpressionBuilder.Value> getHostExpressionsValuesFromValues(Interpreter interpreter, List<ExpressionBuilder.Value> hostExpressions) throws Exception { |
| 157 |
ExpressionBuilder expbuilder = createExpressionBuilder(); |
| 158 |
org.gvsig.expressionevaluator.Compiler compiler = createCompiler(); |
| 159 |
List<ExpressionBuilder.Value> values = new ArrayList<>(); |
| 160 |
for (ExpressionBuilder.Value value : hostExpressions) {
|
| 161 |
ExpressionBuilder.Function hostExpression = (ExpressionBuilder.Function)value; |
| 162 |
values.add(getHostExpressionValue(hostExpression, expbuilder, compiler, interpreter)); |
| 163 |
} |
| 164 |
return values;
|
| 165 |
} |
| 166 |
|
| 167 |
public static List<Code> getHostExpressionsValuesFromCodes(Interpreter interpreter, List<Code> hostExpressions) throws Exception { |
| 168 |
CodeBuilder codeBuilder = ((DefaultInterpreter)interpreter).getCodeBuilder(); |
| 169 |
List<Code> values = new ArrayList<>(); |
| 170 |
for (Code code : hostExpressions) {
|
| 171 |
Code.Callable hostExpression = (Code.Callable)code; |
| 172 |
Codes params = hostExpression.parameters(); |
| 173 |
String mode_specifier;
|
| 174 |
Code exp; |
| 175 |
switch(params.size()) {
|
| 176 |
case 1: |
| 177 |
default:
|
| 178 |
exp = params.get(0);
|
| 179 |
mode_specifier = $HostExpressionFunction.MODE_SPECIFIER_IN;
|
| 180 |
break;
|
| 181 |
case 2: |
| 182 |
exp = params.get(0);
|
| 183 |
mode_specifier = Objects.toString(((Code.Constant)params.get(1)).value(),"IN").toUpperCase(); |
| 184 |
break;
|
| 185 |
} |
| 186 |
Code replacement; |
| 187 |
try {
|
| 188 |
Object v = interpreter.run(exp);
|
| 189 |
switch(mode_specifier) {
|
| 190 |
case $HostExpressionFunction.MODE_SPECIFIER_IN: |
| 191 |
default:
|
| 192 |
ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getExpressionEvaluatorManager(); |
| 193 |
replacement = manager.convertToCode(codeBuilder, v, null);
|
| 194 |
break;
|
| 195 |
case $HostExpressionFunction.MODE_SPECIFIER_OUT: |
| 196 |
case $HostExpressionFunction.MODE_SPECIFIER_INOUT: |
| 197 |
throw new UnsupportedOperationException("Mode OUT/INOUT not implemented"); |
| 198 |
case $HostExpressionFunction.MODE_SPECIFIER_ID: |
| 199 |
replacement = codeBuilder.identifier(Objects.toString(v, null));
|
| 200 |
break;
|
| 201 |
} |
| 202 |
} catch(UndefinedSymbolException ex) {
|
| 203 |
replacement = null;
|
| 204 |
} |
| 205 |
values.add(replacement); |
| 206 |
} |
| 207 |
return values;
|
| 208 |
} |
| 209 |
|
| 210 |
|
| 211 |
public static Code resolveHostExpressions(Code statement, Interpreter interpreter) { |
| 212 |
try {
|
| 213 |
if( statement.code()==Code.CALLABLE ) {
|
| 214 |
// Los bloques BEGIN/END se ejecutan en local siempre, y se
|
| 215 |
// encargan ellos de resolver las host-expression.
|
| 216 |
if( StringUtils.equalsIgnoreCase(CodeBlockFunction.NAME, ((Code.Callable)statement).name()) ) {
|
| 217 |
return statement;
|
| 218 |
} |
| 219 |
if( StringUtils.equalsIgnoreCase(CodeBlockWithExceptFunction.NAME, ((Code.Callable)statement).name()) ) {
|
| 220 |
return statement;
|
| 221 |
} |
| 222 |
} |
| 223 |
if( !hasHostExpressions(statement) ) {
|
| 224 |
return statement;
|
| 225 |
} |
| 226 |
Code newstatement = (Code) statement.clone(); |
| 227 |
List<Code> hostExpressions = getHostExpressions(newstatement);
|
| 228 |
if (hostExpressions.isEmpty()) {
|
| 229 |
return statement;
|
| 230 |
} |
| 231 |
List<Code> replacements = getHostExpressionsValuesFromCodes(interpreter, hostExpressions);
|
| 232 |
|
| 233 |
for (int i = 0; i < hostExpressions.size(); i++) { |
| 234 |
Code hostExpression = hostExpressions.get(i); |
| 235 |
Code value = replacements.get(i); |
| 236 |
if( value != null ) { |
| 237 |
newstatement.replace(hostExpression, value); |
| 238 |
} |
| 239 |
} |
| 240 |
return newstatement;
|
| 241 |
} catch (Exception ex) { |
| 242 |
throw new RuntimeException("Can't resolve host expressions", ex); |
| 243 |
} |
| 244 |
} |
| 245 |
|
| 246 |
public static ExpressionBuilder.Value resolveHostExpressions(ExpressionBuilder.Value statement, SymbolTable symbolTable) { |
| 247 |
try {
|
| 248 |
if( !hasHostExpressions(statement) ) {
|
| 249 |
return statement;
|
| 250 |
} |
| 251 |
ExpressionBuilder.Value newstatement = (ExpressionBuilder.Value) statement.clone(); |
| 252 |
List<ExpressionBuilder.Value> hostExpressions = getHostExpressions(newstatement);
|
| 253 |
if (hostExpressions.isEmpty()) {
|
| 254 |
return statement;
|
| 255 |
} |
| 256 |
|
| 257 |
Interpreter interpreter = createInterpreter(); |
| 258 |
if( symbolTable!=null ) { |
| 259 |
interpreter.setSymbolTable(symbolTable); |
| 260 |
} |
| 261 |
List<ExpressionBuilder.Value> replacements = getHostExpressionsValuesFromValues(interpreter, hostExpressions);
|
| 262 |
|
| 263 |
for (int i = 0; i < hostExpressions.size(); i++) { |
| 264 |
ExpressionBuilder.Value hostExpression = hostExpressions.get(i); |
| 265 |
ExpressionBuilder.Value value = replacements.get(i); |
| 266 |
newstatement.replace(hostExpression, value); |
| 267 |
} |
| 268 |
return newstatement;
|
| 269 |
} catch (Exception ex) { |
| 270 |
throw new RuntimeException("Can't resolve host expressions", ex); |
| 271 |
} |
| 272 |
} |
| 273 |
|
| 274 |
public static Code resolveHostExpressions(Code statement, SymbolTable symbolTable) { |
| 275 |
try {
|
| 276 |
if( !hasHostExpressions(statement) ) {
|
| 277 |
return statement;
|
| 278 |
} |
| 279 |
Code newstatement = (Code) statement.clone(); |
| 280 |
List<Code> hostExpressions = getHostExpressions(newstatement);
|
| 281 |
if (hostExpressions.isEmpty()) {
|
| 282 |
return statement;
|
| 283 |
} |
| 284 |
Interpreter interpreter = createInterpreter(); |
| 285 |
if( symbolTable!=null ) { |
| 286 |
interpreter.setSymbolTable(symbolTable); |
| 287 |
} |
| 288 |
List<Code> replacements = getHostExpressionsValuesFromCodes(interpreter, hostExpressions);
|
| 289 |
|
| 290 |
for (int i = 0; i < hostExpressions.size(); i++) { |
| 291 |
Code hostExpression = hostExpressions.get(i); |
| 292 |
Code value = replacements.get(i); |
| 293 |
newstatement.replace(hostExpression, value); |
| 294 |
} |
| 295 |
return newstatement;
|
| 296 |
} catch (Exception ex) { |
| 297 |
throw new RuntimeException("Can't resolve host expressions", ex); |
| 298 |
} |
| 299 |
} |
| 300 |
|
| 301 |
public static Expression resolveHostExpressions(Expression expression, SymbolTable symbolTable) { |
| 302 |
Code newcode = resolveHostExpressions(expression.getCode(), symbolTable); |
| 303 |
if( newcode == expression.getCode() ) {
|
| 304 |
// No hay "hosts expressions", devolvemos la expresion original.
|
| 305 |
return expression;
|
| 306 |
} |
| 307 |
Expression exp = createExpression();
|
| 308 |
exp.setPhrase(newcode.toValue().toString()); |
| 309 |
return exp;
|
| 310 |
} |
| 311 |
|
| 312 |
private static Compiler createCompiler() { |
| 313 |
ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getExpressionEvaluatorManager(); |
| 314 |
return manager.createCompiler();
|
| 315 |
} |
| 316 |
|
| 317 |
private static Interpreter createInterpreter() { |
| 318 |
ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getExpressionEvaluatorManager(); |
| 319 |
return manager.createInterpreter();
|
| 320 |
} |
| 321 |
|
| 322 |
private static ExpressionBuilder createExpressionBuilder() { |
| 323 |
ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getExpressionEvaluatorManager(); |
| 324 |
return manager.createExpressionBuilder();
|
| 325 |
} |
| 326 |
|
| 327 |
private static Expression createExpression() { |
| 328 |
ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getExpressionEvaluatorManager(); |
| 329 |
return manager.createExpression();
|
| 330 |
} |
| 331 |
|
| 332 |
} |