Revision 22513 trunk/extensions/extSymbology/src/org/gvsig/symbology/fmap/rendering/filter/parser/ExpressionParser.jj
| ExpressionParser.jj | ||
|---|---|---|
| 54 | 54 |
import org.gvsig.symbology.fmap.rendering.filter.operations.*; |
| 55 | 55 |
|
| 56 | 56 |
/** |
| 57 |
*
|
|
| 57 |
* |
|
| 58 | 58 |
* @author Pepe Vidal Salvador - jose.vidal.salvador@iver.es |
| 59 | 59 |
* |
| 60 | 60 |
*/ |
| 61 | 61 |
public class ExpressionParser{
|
| 62 |
protected Stack stack = new Stack(); |
|
| 63 |
protected static OperatorsFactory operators = OperatorsFactory.getInstance(); |
|
| 64 |
protected Hashtable<String, Value> symbols = new Hashtable<String, Value>(); |
|
| 65 |
protected ArrayList<String> classNames = new ArrayList<String>(); |
|
| 66 |
|
|
| 62 |
|
|
| 63 |
private Stack stack = new Stack(); |
|
| 64 |
private static OperatorsFactory operators = OperatorsFactory.getInstance(); |
|
| 65 |
private Hashtable<String, Value> symbols = new Hashtable<String, Value>(); |
|
| 66 |
private ArrayList<String> classNames = new ArrayList<String>(); |
|
| 67 |
|
|
| 68 |
|
|
| 67 | 69 |
public ArrayList<String> getClassNames (){
|
| 68 | 70 |
return classNames; |
| 69 | 71 |
} |
| 70 |
|
|
| 72 |
|
|
| 71 | 73 |
public void addClassName(String name){
|
| 72 | 74 |
for (int i = 0; i < classNames.size(); i++) {
|
| 73 | 75 |
if(classNames.get(i).compareTo(name)==0) |
| ... | ... | |
| 78 | 80 |
public Expression getExpression(){
|
| 79 | 81 |
return (Expression)stack.pop(); |
| 80 | 82 |
} |
| 81 |
|
|
| 83 |
|
|
| 82 | 84 |
public Stack getStack(){
|
| 83 |
|
|
| 85 |
|
|
| 84 | 86 |
return this.stack; |
| 85 | 87 |
} |
| 86 | 88 |
|
| ... | ... | |
| 94 | 96 |
} |
| 95 | 97 |
|
| 96 | 98 |
public static void main(String[]args)throws ParseException,ExpressionException{
|
| 97 |
Hashtable<String, Value> symbols = new Hashtable<String, Value>(); |
|
| 98 |
ExpressionParser parser = new ExpressionParser(new StringReader("true && true"));
|
|
| 99 |
symbols.put("RD_6",ValueFactory.createValue(2));
|
|
| 99 |
ExpressionParser parser = new ExpressionParser(new StringReader("true && true"));
|
|
| 100 | 100 |
parser.Expression(); |
| 101 | 101 |
parser.getStack(); |
| 102 | 102 |
Expression exp = parser.getExpression(); |
| 103 |
exp.check(symbols); |
|
| 104 |
System.out.println(exp.evaluate(symbols)); |
|
| 103 |
|
|
| 105 | 104 |
} |
| 106 | 105 |
} |
| 107 | 106 |
PARSER_END(ExpressionParser) |
| 108 |
SKIP:{
|
|
| 109 |
" " |
|
| 110 |
| "\r" |
|
| 111 |
| "\t" |
|
| 112 |
| "\n" |
|
| 107 |
SKIP : |
|
| 108 |
{
|
|
| 109 |
" " |
|
| 110 |
| "\r" |
|
| 111 |
| "\t" |
|
| 112 |
| "\n" |
|
| 113 | 113 |
} |
| 114 |
TOKEN:/*Boolean Literals*/ |
|
| 114 |
|
|
| 115 |
|
|
| 116 |
TOKEN : /* OPERATORS */ |
|
| 115 | 117 |
{
|
| 116 |
<TRUE:"true"> |
|
| 117 |
| <FALSE:"false"> |
|
| 118 |
< PLUS: "+" > |
|
| 119 |
| < MINUS: "-" > |
|
| 120 |
| < MULTIPLY: "*" > |
|
| 121 |
| < DIVIDE: "/" > |
|
| 122 |
| < GT: ">" > |
|
| 123 |
| < LT: "<" > |
|
| 124 |
| < NOT: "!" > |
|
| 125 |
| < EQ: "==" > |
|
| 126 |
| < LE: "<=" > |
|
| 127 |
| < GE: ">=" > |
|
| 128 |
| < NE: "!=" > |
|
| 129 |
| < OR: "||" > |
|
| 130 |
| < AND: "&&" > |
|
| 118 | 131 |
} |
| 119 |
TOKEN:{
|
|
| 120 |
<NULL:"null"> |
|
| 121 |
} |
|
| 122 |
TOKEN:/* Operators */ |
|
| 132 |
TOKEN : /* MISC */ |
|
| 123 | 133 |
{
|
| 124 |
<AND:"&&"> |
|
| 125 |
| <OR:"||"> |
|
| 126 |
| <PLUS:"+"> |
|
| 127 |
| <MINUS:"-"> |
|
| 128 |
| <MULTIPLY:"*"> |
|
| 129 |
| <DIVIDE:"/"> |
|
| 130 |
| <LT:"<"> |
|
| 131 |
| <LE:"<="> |
|
| 132 |
| <EQ:"=="> |
|
| 133 |
| <NE:"!="> |
|
| 134 |
| <GT:">"> |
|
| 135 |
| <GE:">="> |
|
| 134 |
< #DOT: "." > |
|
| 135 |
| < OPEN_SQ_BRACKETS : "[" > |
|
| 136 |
| < CLOSE_SQ_BRACKETS : "]" > |
|
| 137 |
| < OPEN_PARENTHESIS : "(" >
|
|
| 138 |
| < CLOSE_PARENTHESIS : ")" > |
|
| 139 |
| < DOUBLE_QUOTE : "\"" > |
|
| 140 |
| < COMMA : "," > |
|
| 141 |
| < EOFIELD : ":" > |
|
| 142 |
| < EOEXPR : ";" > |
|
| 136 | 143 |
} |
| 137 |
TOKEN:/* Numeric literals */
|
|
| 144 |
TOKEN : /* CONSTANTS AND IDENTIFIERS */
|
|
| 138 | 145 |
{
|
| 139 |
<INTEGER_LITERAL:(["0"-"9"])+> |
|
| 140 |
| <FLOATING_POINT_LITERAL:(["0"-"9"])+"."(["0"-"9"])*> |
|
| 141 |
| <STRING_LITERAL:"\""((~["\"", "\\", "\n", "\r"]) |
|
| 142 |
| ("\\"(["n", "t", "b", "r", "f", "\\", "'", "\""]
|
|
| 143 |
| ["0"-"7"](["0"-"7"])? |
|
| 144 |
| ["0"-"3"]["0"-"7"]["0"-"7"])))*"\""> |
|
| 146 |
< BOOLEAN: "true" | "false" > |
|
| 147 |
| < NULL: "null"> |
|
| 148 |
| < IDENTIFIER: ( <LETTER> ) ( <LETTER>|<DIGIT> )* > |
|
| 149 |
| < #LETTER: ( ["_","$","%"] | ( ["a"-"z"] ) | ( ["A"-"Z"] ) ) > |
|
| 145 | 150 |
} |
| 146 |
TOKEN:/* Identifier */
|
|
| 151 |
TOKEN : /* NUMBER */
|
|
| 147 | 152 |
{
|
| 148 |
<IDENTIFIER:<LETTER>(<LETTER> |
|
| 149 |
| <DIGIT>)*> |
|
| 150 |
| <#LETTER:["\u0041"-"\u005a", "\u005f", "\u0061"-"\u007a"]> |
|
| 151 |
| <#DIGIT:["\u0030"-"\u0039"]> |
|
| 153 |
< #DIGIT: ["0"-"9"] > |
|
| 154 |
| < INTEGER: ( <DIGIT> )+ > |
|
| 155 |
| < FLOATING_POINT: (<DIGIT>)+ "." (<DIGIT>)* (<EXPONENT>)? (["f","F","d","D"])? |
|
| 156 |
| <DOT> (<DIGIT>)+ (<EXPONENT>)? (["f","F","d","D"])? |
|
| 157 |
| (<DIGIT>)+ <EXPONENT> (["f","F","d","D"])? |
|
| 158 |
| (<DIGIT>)+ (<EXPONENT>)? ["f","F","d","D"] > |
|
| 159 |
| < #EXPONENT: ["e","E"] (["+","-"])? (<DIGIT>)+ > |
|
| 152 | 160 |
} |
| 153 |
TOKEN:/* Others*/
|
|
| 161 |
TOKEN: /* STRING */
|
|
| 154 | 162 |
{
|
| 155 |
<COMMA:","> |
|
| 156 |
| <LPAREN:"(">
|
|
| 157 |
| <RPAREN:")"> |
|
| 163 |
< STRING: ( <DOUBLE_QUOTE> ( <CHAR_STRING> )* <DOUBLE_QUOTE> )> |
|
| 164 |
| < CHAR_STRING : ~[ "\"", ";","\n","\r"] > |
|
| 158 | 165 |
} |
| 159 | 166 |
void Expression():{}{
|
| 160 | 167 |
AndExpression()(<OR>AndExpression(){
|
| 161 | 168 |
Expression leftExpression = (Expression)stack.pop(); |
| 162 | 169 |
Expression rightExpression = (Expression)stack.pop(); |
| 163 |
|
|
| 164 |
Expression orExpr = new OrOperator(); |
|
| 170 |
|
|
| 171 |
Expression orExpr = new OrOperator(symbols);
|
|
| 165 | 172 |
orExpr.addArgument(0, rightExpression); |
| 166 | 173 |
orExpr.addArgument(0, leftExpression); |
| 167 |
|
|
| 174 |
|
|
| 168 | 175 |
stack.push(orExpr); |
| 169 |
|
|
| 176 |
|
|
| 170 | 177 |
} |
| 171 | 178 |
)* |
| 172 | 179 |
} |
| ... | ... | |
| 177 | 184 |
EqCompExpression()((x = <AND>)EqCompExpression(){
|
| 178 | 185 |
Expression rightExpression = (Expression)stack.pop(); |
| 179 | 186 |
Expression leftExpression = (Expression)stack.pop(); |
| 180 |
|
|
| 181 |
Expression func = new AndOperator(); |
|
| 182 |
|
|
| 187 |
|
|
| 188 |
Expression func = new AndOperator(symbols);
|
|
| 189 |
|
|
| 183 | 190 |
func.addArgument(0, rightExpression); |
| 184 | 191 |
func.addArgument(0, leftExpression); |
| 185 |
|
|
| 192 |
|
|
| 186 | 193 |
stack.push(func); |
| 187 | 194 |
} |
| 188 | 195 |
)* |
| ... | ... | |
| 196 | 203 |
Expression rightExpression = (Expression)stack.pop(); |
| 197 | 204 |
Expression leftExpression = (Expression)stack.pop(); |
| 198 | 205 |
Expression func = null; |
| 199 |
|
|
| 200 |
if (x.kind == EQ)func = new EqOperator(); |
|
| 201 |
else if (x.kind == NE)func = new NeOperator(); |
|
| 202 |
|
|
| 206 |
|
|
| 207 |
if (x.kind == EQ)func = new EqOperator(symbols);
|
|
| 208 |
else if (x.kind == NE)func = new NeOperator(symbols);
|
|
| 209 |
|
|
| 203 | 210 |
func.addArgument(0, rightExpression); |
| 204 | 211 |
func.addArgument(0, leftExpression); |
| 205 |
|
|
| 212 |
|
|
| 206 | 213 |
stack.push(func); |
| 207 | 214 |
} |
| 208 | 215 |
)* |
| ... | ... | |
| 218 | 225 |
Expression rightExpression = (Expression)stack.pop(); |
| 219 | 226 |
Expression leftExpression = (Expression)stack.pop(); |
| 220 | 227 |
Expression func = null; |
| 221 |
|
|
| 222 |
|
|
| 223 |
if (x.kind == LT)func = new LessThanOperator(); |
|
| 224 |
else if (x.kind == LE)func = new LessThanOrEqualsOperator(); |
|
| 225 |
else if (x.kind == GT)func = new GreaterThanOperator(); |
|
| 226 |
else if (x.kind == GE)func = new GreaterThanOrEqualsOperator(); |
|
| 227 |
|
|
| 228 |
|
|
| 229 |
|
|
| 230 |
if (x.kind == LT)func = new LessThanOperator(symbols);
|
|
| 231 |
else if (x.kind == LE)func = new LessThanOrEqualsOperator(symbols);
|
|
| 232 |
else if (x.kind == GT)func = new GreaterThanOperator(symbols);
|
|
| 233 |
else if (x.kind == GE)func = new GreaterThanOrEqualsOperator(symbols);
|
|
| 234 |
|
|
| 228 | 235 |
func.addArgument(0, rightExpression); |
| 229 | 236 |
func.addArgument(0, leftExpression); |
| 230 |
|
|
| 237 |
|
|
| 231 | 238 |
stack.push(func); |
| 232 | 239 |
} |
| 233 | 240 |
)* |
| ... | ... | |
| 241 | 248 |
Expression rightExpression = (Expression)stack.pop(); |
| 242 | 249 |
Expression leftExpression = (Expression)stack.pop(); |
| 243 | 250 |
Expression func = null; |
| 244 |
|
|
| 245 |
if (x.kind == PLUS)func = new AddOperator(); |
|
| 246 |
else func = new MinusOperator(); |
|
| 247 |
|
|
| 251 |
|
|
| 252 |
if (x.kind == PLUS)func = new AddOperator(symbols);
|
|
| 253 |
else func = new MinusOperator(symbols);
|
|
| 254 |
|
|
| 248 | 255 |
func.addArgument(0, rightExpression); |
| 249 | 256 |
func.addArgument(0, leftExpression); |
| 250 |
|
|
| 257 |
|
|
| 251 | 258 |
stack.push(func); |
| 252 | 259 |
} |
| 253 | 260 |
)* |
| ... | ... | |
| 258 | 265 |
{
|
| 259 | 266 |
UnaryElement()((x = <MULTIPLY> |
| 260 | 267 |
| x = <DIVIDE>)UnaryElement(){
|
| 261 |
Expression rightExpression = (Expression)stack.pop(); |
|
| 262 |
Expression leftExpression = (Expression)stack.pop(); |
|
| 263 |
Expression func = null; |
|
| 264 |
|
|
| 265 |
if (x.kind == MULTIPLY)func = new MultOperator(); |
|
| 266 |
else func = new DivOperator(); |
|
| 267 |
|
|
| 268 |
func.addArgument(0, rightExpression); |
|
| 269 |
func.addArgument(0, leftExpression); |
|
| 270 |
|
|
| 271 |
stack.push(func); |
|
| 272 |
} |
|
| 273 |
)* |
|
| 268 |
try{
|
|
| 269 |
Expression A = (Expression) stack.pop(); |
|
| 270 |
Expression B = (Expression) stack.pop(); |
|
| 271 |
boolean aInt = (((Expression) A).evaluate() instanceof Integer); |
|
| 272 |
boolean bInt = (((Expression) B).evaluate() instanceof Integer); |
|
| 273 |
if (aInt && bInt) {
|
|
| 274 |
int a = (Integer) A.evaluate(); |
|
| 275 |
int b = (Integer) B.evaluate(); |
|
| 276 |
if (x.kind == MULTIPLY) |
|
| 277 |
stack.push(new NumericalConstant(new Integer(b * a),symbols)); |
|
| 278 |
else |
|
| 279 |
stack.push(new NumericalConstant(new Integer(b / a),symbols)); |
|
| 280 |
} else {
|
|
| 281 |
|
|
| 282 |
double a = new Double(((Expression)A).evaluate().toString()); |
|
| 283 |
double b = new Double(((Expression)B).evaluate().toString()); |
|
| 284 |
if (x.kind == MULTIPLY) |
|
| 285 |
stack.push(new NumericalConstant(new Double(b * a),symbols)); |
|
| 286 |
else |
|
| 287 |
stack.push(new NumericalConstant(new Double(b / a),symbols)); |
|
| 288 |
}}catch (ClassCastException ex) {
|
|
| 289 |
ex.printStackTrace(); |
|
| 290 |
} catch (ExpressionException e) {
|
|
| 291 |
e.printStackTrace(); |
|
| 292 |
} |
|
| 293 |
|
|
| 294 |
})* |
|
| 274 | 295 |
} |
| 275 | 296 |
void UnaryElement():{
|
| 276 | 297 |
Token x = null; |
| ... | ... | |
| 278 | 299 |
{
|
| 279 | 300 |
(x = <PLUS> |
| 280 | 301 |
| x = <MINUS>)UnaryElement(){
|
| 281 |
if (x.kind == PLUS){
|
|
| 282 |
Expression a = (Expression)stack.pop();
|
|
| 283 |
try {
|
|
| 284 |
DoubleConstant plusDoubleValue = new DoubleConstant(a.evaluate(symbols).toString());
|
|
| 285 |
stack.push(plusDoubleValue);
|
|
| 286 |
} catch (ExpressionException e) {
|
|
| 287 |
e.printStackTrace();
|
|
| 288 |
}
|
|
| 289 |
|
|
| 290 |
}
|
|
| 291 |
else if (x.kind == MINUS){
|
|
| 292 |
Expression a = (Expression)stack.pop();
|
|
| 293 |
try {
|
|
| 294 |
DoubleConstant doubleValue = new DoubleConstant("-1*", a.evaluate(symbols).toString());
|
|
| 295 |
stack.push(doubleValue);
|
|
| 296 |
} catch (ExpressionException e) {
|
|
| 297 |
e.printStackTrace();
|
|
| 298 |
}
|
|
| 299 |
|
|
| 300 |
} |
|
| 302 |
try{
|
|
| 303 |
Object A = stack.pop();
|
|
| 304 |
if ((((Expression) A).evaluate() instanceof Integer)) {
|
|
| 305 |
int a = (Integer) ((Expression) A).evaluate();
|
|
| 306 |
if (x.kind == PLUS)
|
|
| 307 |
stack.push(new NumericalConstant(new Integer(a),symbols));
|
|
| 308 |
else
|
|
| 309 |
stack.push(new NumericalConstant(new Integer(-a),symbols));
|
|
| 310 |
} else {
|
|
| 311 |
double a = (Double) ((Expression) A).evaluate();
|
|
| 312 |
if (x.kind == PLUS)
|
|
| 313 |
stack.push(new NumericalConstant(new Double(a),symbols));
|
|
| 314 |
else
|
|
| 315 |
stack.push(new NumericalConstant(new Double(-a),symbols));
|
|
| 316 |
}
|
|
| 317 |
} catch (ClassCastException ex) {
|
|
| 318 |
ex.printStackTrace();
|
|
| 319 |
}catch (ExpressionException ex) {
|
|
| 320 |
ex.printStackTrace(); |
|
| 321 |
}
|
|
| 301 | 322 |
} |
| 302 |
| Element() |
|
| 323 |
|
|
| 324 |
| BooleanUnaryElement() |
|
| 303 | 325 |
} |
| 326 |
|
|
| 327 |
void BooleanUnaryElement(): |
|
| 328 |
{
|
|
| 329 |
Token t; |
|
| 330 |
} |
|
| 331 |
{
|
|
| 332 |
t = <NOT> UnaryElement() {
|
|
| 333 |
Expression rightExpression = (Expression)stack.pop(); |
|
| 334 |
Expression func = new NotOperator(symbols); |
|
| 335 |
func.addArgument(0, rightExpression); |
|
| 336 |
stack.push(func); |
|
| 337 |
} |
|
| 338 |
| Element() |
|
| 339 |
} |
|
| 304 | 340 |
void Element():{
|
| 305 | 341 |
Token x; |
| 306 | 342 |
String y = "[$,A-Z,_,a-z]([$,A-Z,_,a-z]|[0-9])*"; |
| 307 | 343 |
} |
| 308 | 344 |
{
|
| 309 |
|
|
| 345 |
|
|
| 310 | 346 |
("["x = <IDENTIFIER>"]"){
|
| 311 |
|
|
| 312 |
ReplaceOperator func = new ReplaceOperator(); |
|
| 313 |
func.addArgument(x.image);
|
|
| 347 |
|
|
| 348 |
ReplaceOperator func = new ReplaceOperator(symbols);
|
|
| 349 |
func.addArgument(x.image); |
|
| 314 | 350 |
stack.push(func); |
| 315 | 351 |
addClassName(x.image); |
| 316 |
|
|
| 352 |
|
|
| 317 | 353 |
} |
| 318 |
| (x = <INTEGER_LITERAL> | x = <FLOATING_POINT_LITERAL>){
|
|
| 319 |
DoubleConstant doubleValue = new DoubleConstant(x.image);
|
|
| 320 |
stack.push(doubleValue);
|
|
| 354 |
| (x = <INTEGER>){
|
|
| 355 |
NumericalConstant intC = new NumericalConstant(Integer.valueOf(x.image),symbols);
|
|
| 356 |
stack.push(intC);
|
|
| 321 | 357 |
} |
| 322 |
| (x = <TRUE>| x = <FALSE>){
|
|
| 323 |
BooleanConstant boolValue = new BooleanConstant(x.image); |
|
| 358 |
| (x = <FLOATING_POINT>){
|
|
| 359 |
NumericalConstant doubleC = new NumericalConstant(Double.valueOf(x.image),symbols); |
|
| 360 |
stack.push(doubleC); |
|
| 361 |
} |
|
| 362 |
|(x = <STRING>) {
|
|
| 363 |
StringConstant stringValue = new StringConstant(x.image.substring(1, x.image.length()-1),symbols); |
|
| 364 |
stack.push(stringValue); |
|
| 365 |
} |
|
| 366 |
| (x = <BOOLEAN>){
|
|
| 367 |
BooleanConstant boolValue = new BooleanConstant(x.image,symbols); |
|
| 324 | 368 |
stack.push(boolValue); |
| 325 | 369 |
} |
| 326 | 370 |
| x = <NULL>{
|
| 327 |
NullConstant nullValue = new NullConstant(); |
|
| 371 |
NullConstant nullValue = new NullConstant(symbols);
|
|
| 328 | 372 |
stack.push(nullValue); |
| 329 | 373 |
} |
| 330 | 374 |
| LOOKAHEAD(2)function() |
| ... | ... | |
| 358 | 402 |
stack.push(function); |
| 359 | 403 |
} |
| 360 | 404 |
|(x = <IDENTIFIER>){
|
| 361 |
StringConstant stringValue = new StringConstant(x.image); |
|
| 405 |
StringConstant stringValue = new StringConstant(x.image,symbols);
|
|
| 362 | 406 |
stack.push(stringValue); |
| 363 | 407 |
} |
| 364 | 408 |
} |
| ... | ... | |
| 366 | 410 |
int argCount = 0; |
| 367 | 411 |
} |
| 368 | 412 |
{
|
| 369 |
<LPAREN>[argCount = ArgumentList()]<RPAREN>{
|
|
| 413 |
<OPEN_PARENTHESIS>[argCount = ArgumentList()]<CLOSE_PARENTHESIS>{
|
|
| 370 | 414 |
return argCount; |
| 371 | 415 |
} |
| 372 | 416 |
} |
Also available in: Unified diff