Revision 44154 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/DefaultInterpreter.java
| DefaultInterpreter.java | ||
|---|---|---|
| 17 | 17 |
import org.gvsig.expressionevaluator.Codes; |
| 18 | 18 |
import org.gvsig.expressionevaluator.ExpressionRuntimeException; |
| 19 | 19 |
import org.gvsig.expressionevaluator.Function; |
| 20 |
import org.gvsig.expressionevaluator.impl.DefaultCodeBuilder.RecursionControlSupport; |
|
| 20 | 21 |
import org.gvsig.expressionevaluator.impl.function.operator.BinaryOperator; |
| 21 | 22 |
import org.gvsig.expressionevaluator.impl.function.programming.CallMethodFunction; |
| 22 | 23 |
import org.gvsig.expressionevaluator.impl.function.operator.UnaryOperator; |
| ... | ... | |
| 24 | 25 |
|
| 25 | 26 |
public class DefaultInterpreter implements Interpreter {
|
| 26 | 27 |
|
| 28 |
public static int DEFAULT_MAX_RECURSION_LIMIT = 20; |
|
| 29 |
|
|
| 27 | 30 |
private class DefaultCache implements Cache {
|
| 28 | 31 |
|
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private Map<Pair<Object,Object>,Pair<Object,Long>> data; |
| ... | ... | |
| 83 | 86 |
private Double accuracy; |
| 84 | 87 |
private Code currentCode; |
| 85 | 88 |
private Cache cache; |
| 89 |
private int maxRecursionLimit; |
|
| 86 | 90 |
|
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public DefaultInterpreter() {
|
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this.cache = new DefaultCache(); |
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this.maxRecursionLimit = DEFAULT_MAX_RECURSION_LIMIT; |
|
| 89 | 94 |
} |
| 90 | 95 |
|
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@Override |
| ... | ... | |
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if( this.symbolTable!=null ) {
|
| 96 | 101 |
other.symbolTable = this.symbolTable.clone(); |
| 97 | 102 |
} |
| 98 |
|
|
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return other; |
| 100 | 104 |
} |
| 105 |
|
|
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public int getMaxRecursionLimit() {
|
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return this.maxRecursionLimit; |
|
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} |
|
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public void setMaxRecursionLimit(int limit) {
|
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this.maxRecursionLimit = limit; |
|
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} |
|
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|
|
| 102 | 114 |
@Override |
| 103 | 115 |
public Cache getCache() {
|
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return this.cache; |
| ... | ... | |
| 159 | 171 |
} |
| 160 | 172 |
|
| 161 | 173 |
public Object runCode(Code code) throws Exception {
|
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RecursionControlSupport recursionControl = null; |
|
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if( code instanceof RecursionControlSupport ) {
|
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recursionControl = (RecursionControlSupport) code; |
|
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if( !recursionControl.enterCode(this.maxRecursionLimit) ) {
|
|
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recursionControl.resetRecursionState(); |
|
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throw new ExpressionRuntimeException(code, I18N.Maximum_recursion_limit_exceeded()); |
|
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} |
|
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} |
|
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Object value = null; |
|
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this.currentCode = code; |
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Object value = null;
|
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switch( code.code() ) {
|
|
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case Code.CONSTANT: |
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value = ((Constant) code).value(); |
|
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break; |
|
| 184 |
try {
|
|
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switch( code.code() ) {
|
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case Code.CONSTANT:
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value = ((Constant) code).value();
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break;
|
|
| 168 | 189 |
|
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case Code.IDENTIFIER: |
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String name = ((Identifier) code).name(); |
|
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if( !this.getSymbolTable().exists(name) ) {
|
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throw new ExpressionRuntimeException( |
|
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code, |
|
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I18N.Undefined_variable_XIdentifierX(name), |
|
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I18N.Use_single_quotes_to_enter_literal_strings() |
|
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); |
|
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} |
|
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value = this.getSymbolTable().value(name); |
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break; |
|
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case Code.IDENTIFIER:
|
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String name = ((Identifier) code).name();
|
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if( !this.getSymbolTable().exists(name) ) {
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throw new ExpressionRuntimeException(
|
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code,
|
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I18N.Undefined_variable_XIdentifierX(name),
|
|
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I18N.Use_single_quotes_to_enter_literal_strings()
|
|
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);
|
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}
|
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value = this.getSymbolTable().value(name);
|
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break;
|
|
| 180 | 201 |
|
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case Code.METHOD: {
|
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Method method = (Method) code; |
|
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Function function = method.function(); |
|
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if( function == null ) {
|
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Object obj = this.runCode(method.obj()); |
|
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if( obj == null ) {
|
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throw new NullPointerException("An object pointer was expected to invoke method "+method.methodname()+" and a null was received");
|
|
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case Code.METHOD: {
|
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Method method = (Method) code; |
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Function function = method.function(); |
|
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if( function == null ) {
|
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Object obj = this.runCode(method.obj()); |
|
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if( obj == null ) {
|
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throw new NullPointerException("An object pointer was expected to invoke method "+method.methodname()+" and a null was received");
|
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} |
|
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method.function(new CallMethodFunction(obj, method.methodname())); |
|
| 188 | 211 |
} |
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method.function(new CallMethodFunction(obj, method.methodname())); |
|
| 190 | 212 |
} |
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} |
|
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case Code.CALLER: |
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Caller caller = (Caller) code; |
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Function function = caller.function(); |
|
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if( function == null ) {
|
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function = this.getSymbolTable().function(caller.name()); |
|
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case Code.CALLER: |
|
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Caller caller = (Caller) code; |
|
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Function function = caller.function(); |
|
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if( function == null ) {
|
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throw new ExpressionRuntimeException(code, I18N.Undefined_function_XIdentifierX(caller.name())); |
|
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function = this.getSymbolTable().function(caller.name()); |
|
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if( function == null ) {
|
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throw new ExpressionRuntimeException(code, I18N.Undefined_function_XIdentifierX(caller.name())); |
|
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} |
|
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caller.function(function); |
|
| 199 | 222 |
} |
| 200 |
caller.function(function); |
|
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} |
|
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Codes args = caller.args(); |
|
| 203 |
try {
|
|
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switch( caller.type() ) {
|
|
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case Caller.UNARY_OPERATOR: |
|
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if( args == null || args.size() != 1 ) {
|
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throw new ExpressionRuntimeException(code, I18N.Number_of_argument_mistmatch_in_operator_XIdentifierX_expected_1_got_XargcX(function.name(),args==null?0:args.size())); |
|
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} |
|
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value = ((UnaryOperator) function).call(this, runCode(args.get(0))); |
|
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break; |
|
| 223 |
Codes args = caller.args(); |
|
| 224 |
try {
|
|
| 225 |
switch( caller.type() ) {
|
|
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case Caller.UNARY_OPERATOR: |
|
| 227 |
if( args == null || args.size() != 1 ) {
|
|
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throw new ExpressionRuntimeException(code, I18N.Number_of_argument_mistmatch_in_operator_XIdentifierX_expected_1_got_XargcX(function.name(),args==null?0:args.size())); |
|
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} |
|
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value = ((UnaryOperator) function).call(this, runCode(args.get(0))); |
|
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break; |
|
| 211 | 232 |
|
| 212 |
case Caller.BINARY_OPERATOR: |
|
| 213 |
if( args == null || args.size() != 2 ) {
|
|
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throw new ExpressionRuntimeException(code, I18N.Number_of_argument_mistmatch_in_operator_XIdentifierX_expected_2_got_XargcX(function.name(),args==null?0:args.size())); |
|
| 215 |
} |
|
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value = ((BinaryOperator) function).call(this, runCode(args.get(0)), runCode(args.get(1))); |
|
| 217 |
break; |
|
| 233 |
case Caller.BINARY_OPERATOR:
|
|
| 234 |
if( args == null || args.size() != 2 ) {
|
|
| 235 |
throw new ExpressionRuntimeException(code, I18N.Number_of_argument_mistmatch_in_operator_XIdentifierX_expected_2_got_XargcX(function.name(),args==null?0:args.size()));
|
|
| 236 |
}
|
|
| 237 |
value = ((BinaryOperator) function).call(this, runCode(args.get(0)), runCode(args.get(1)));
|
|
| 238 |
break;
|
|
| 218 | 239 |
|
| 219 |
case Caller.FUNCTION: |
|
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int argc = (args == null) ? 0 : args.size(); |
|
| 221 |
if( !function.argc().contains(argc) ) {
|
|
| 222 |
throw new ExpressionRuntimeException(code, I18N.Number_of_argument_mistmatch_in_function_XIdentifierX_expected_XexpectedX_got_XfoundX(function.name(),function.argc(),argc)); |
|
| 223 |
} |
|
| 224 |
if( function.useArgumentsInsteadObjects() ) {
|
|
| 225 |
value = function.call(this, args); |
|
| 226 |
} else {
|
|
| 227 |
Object[] argvalues = new Object[argc]; |
|
| 228 |
if( args != null ) {
|
|
| 229 |
int i = 0; |
|
| 230 |
for( Code arg : args ) {
|
|
| 231 |
argvalues[i++] = runCode(arg); |
|
| 240 |
case Caller.FUNCTION: |
|
| 241 |
int argc = (args == null) ? 0 : args.size(); |
|
| 242 |
if( !function.argc().contains(argc) ) {
|
|
| 243 |
throw new ExpressionRuntimeException(code, I18N.Number_of_argument_mistmatch_in_function_XIdentifierX_expected_XexpectedX_got_XfoundX(function.name(),function.argc(),argc)); |
|
| 244 |
} |
|
| 245 |
if( function.useArgumentsInsteadObjects() ) {
|
|
| 246 |
value = function.call(this, args); |
|
| 247 |
} else {
|
|
| 248 |
Object[] argvalues = new Object[argc]; |
|
| 249 |
if( args != null ) {
|
|
| 250 |
int i = 0; |
|
| 251 |
for( Code arg : args ) {
|
|
| 252 |
argvalues[i++] = runCode(arg); |
|
| 253 |
} |
|
| 232 | 254 |
} |
| 255 |
value = function.call(this, argvalues); |
|
| 233 | 256 |
} |
| 234 |
value = function.call(this, argvalues); |
|
| 235 | 257 |
} |
| 258 |
} catch (RuntimeException ex) {
|
|
| 259 |
throw ex; |
|
| 260 |
} catch (Exception ex) {
|
|
| 261 |
String argsstr = "???"; |
|
| 262 |
try {
|
|
| 263 |
argsstr = args.toString(); |
|
| 264 |
} catch(Exception ex2) {
|
|
| 265 |
// Ignore. |
|
| 266 |
} |
|
| 267 |
throw new ExpressionRuntimeException(code, I18N.Problems_calling_function_XIdentifierX_with_args_XargsX(function.name(),argsstr)); |
|
| 236 | 268 |
} |
| 237 |
} catch (RuntimeException ex) {
|
|
| 238 |
throw ex; |
|
| 239 |
} catch (Exception ex) {
|
|
| 240 |
String argsstr = "???"; |
|
| 241 |
try {
|
|
| 242 |
argsstr = args.toString(); |
|
| 243 |
} catch(Exception ex2) {
|
|
| 244 |
// Ignore. |
|
| 245 |
} |
|
| 246 |
throw new ExpressionRuntimeException(code, I18N.Problems_calling_function_XIdentifierX_with_args_XargsX(function.name(),argsstr)); |
|
| 269 |
break; |
|
| 270 |
|
|
| 247 | 271 |
} |
| 248 |
break; |
|
| 249 |
|
|
| 272 |
} finally {
|
|
| 273 |
this.currentCode = null; |
|
| 274 |
if( recursionControl!=null ) {
|
|
| 275 |
recursionControl.exitCode(); |
|
| 276 |
} |
|
| 250 | 277 |
} |
| 251 |
this.currentCode = null; |
|
| 252 | 278 |
return value; |
| 253 | 279 |
} |
| 254 | 280 |
|
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