1 | // License: GPL. For details, see LICENSE file.
|
---|
2 | package org.openstreetmap.josm.gui.mappaint.mapcss;
|
---|
3 |
|
---|
4 | import static org.openstreetmap.josm.tools.Utils.equal;
|
---|
5 |
|
---|
6 | import java.awt.Color;
|
---|
7 | import java.lang.reflect.Array;
|
---|
8 | import java.lang.reflect.InvocationTargetException;
|
---|
9 | import java.lang.reflect.Method;
|
---|
10 | import java.util.ArrayList;
|
---|
11 | import java.util.Arrays;
|
---|
12 | import java.util.List;
|
---|
13 |
|
---|
14 | import org.openstreetmap.josm.Main;
|
---|
15 | import org.openstreetmap.josm.actions.search.SearchCompiler;
|
---|
16 | import org.openstreetmap.josm.actions.search.SearchCompiler.Match;
|
---|
17 | import org.openstreetmap.josm.actions.search.SearchCompiler.ParseError;
|
---|
18 | import org.openstreetmap.josm.gui.mappaint.Cascade;
|
---|
19 | import org.openstreetmap.josm.gui.mappaint.Environment;
|
---|
20 | import org.openstreetmap.josm.tools.Utils;
|
---|
21 |
|
---|
22 | public interface Expression {
|
---|
23 |
|
---|
24 | public Object evaluate(Environment env);
|
---|
25 |
|
---|
26 | public static class LiteralExpression implements Expression {
|
---|
27 | Object literal;
|
---|
28 |
|
---|
29 | public LiteralExpression(Object lit) {
|
---|
30 | this.literal = lit;
|
---|
31 | }
|
---|
32 |
|
---|
33 | @Override
|
---|
34 | public Object evaluate(Environment env) {
|
---|
35 | return literal;
|
---|
36 | }
|
---|
37 |
|
---|
38 | @Override
|
---|
39 | public String toString() {
|
---|
40 | if (literal == null)
|
---|
41 | return "Lit{<null>}";
|
---|
42 | if (literal instanceof float[])
|
---|
43 | return Arrays.toString((float[]) literal);
|
---|
44 | return "<"+literal.toString()+">";
|
---|
45 | }
|
---|
46 | }
|
---|
47 |
|
---|
48 | public static class FunctionExpression implements Expression {
|
---|
49 | String name;
|
---|
50 | List<Expression> args;
|
---|
51 |
|
---|
52 | public FunctionExpression(String name, List<Expression> args) {
|
---|
53 | this.name = name;
|
---|
54 | this.args = args;
|
---|
55 | }
|
---|
56 |
|
---|
57 | public static class EvalFunctions {
|
---|
58 | Environment env;
|
---|
59 |
|
---|
60 | public Object eval(Object o) {
|
---|
61 | return o;
|
---|
62 | }
|
---|
63 |
|
---|
64 | public static float plus(float... args) {
|
---|
65 | float res = 0;
|
---|
66 | for (float f : args) {
|
---|
67 | res += f;
|
---|
68 | }
|
---|
69 | return res;
|
---|
70 | }
|
---|
71 |
|
---|
72 | public Float minus(float... args) {
|
---|
73 | if (args.length == 0)
|
---|
74 | return 0f;
|
---|
75 | if (args.length == 1) { // unary minus
|
---|
76 | return -args[0];
|
---|
77 | }
|
---|
78 | float res = args[0];
|
---|
79 | for (int i=1; i<args.length; ++i) {
|
---|
80 | res -= args[i];
|
---|
81 | }
|
---|
82 | return res;
|
---|
83 | }
|
---|
84 |
|
---|
85 | public static float times(float... args) {
|
---|
86 | float res = 1;
|
---|
87 | for (float f : args) {
|
---|
88 | res *= f;
|
---|
89 | }
|
---|
90 | return res;
|
---|
91 | }
|
---|
92 |
|
---|
93 | public Float devided_by(float... args) {
|
---|
94 | if (args.length == 0)
|
---|
95 | return 1f;
|
---|
96 | float res = args[0];
|
---|
97 | for (int i=1; i<args.length; ++i) {
|
---|
98 | if (args[i] == 0f)
|
---|
99 | return null;
|
---|
100 | res /= args[i];
|
---|
101 | }
|
---|
102 | return res;
|
---|
103 | }
|
---|
104 |
|
---|
105 | public static List list(Object... args) {
|
---|
106 | return Arrays.asList(args);
|
---|
107 | }
|
---|
108 |
|
---|
109 | public Color rgb(float r, float g, float b) {
|
---|
110 | Color c = null;
|
---|
111 | try {
|
---|
112 | c = new Color(r, g, b);
|
---|
113 | } catch (IllegalArgumentException e) {
|
---|
114 | return null;
|
---|
115 | }
|
---|
116 | return c;
|
---|
117 | }
|
---|
118 |
|
---|
119 | public float red(Color c) {
|
---|
120 | return Utils.color_int2float(c.getRed());
|
---|
121 | }
|
---|
122 |
|
---|
123 | public float green(Color c) {
|
---|
124 | return Utils.color_int2float(c.getGreen());
|
---|
125 | }
|
---|
126 |
|
---|
127 | public float blue(Color c) {
|
---|
128 | return Utils.color_int2float(c.getBlue());
|
---|
129 | }
|
---|
130 |
|
---|
131 | public Object prop(String key) {
|
---|
132 | return prop(key, null);
|
---|
133 | }
|
---|
134 |
|
---|
135 | public Object prop(String key, String layer) {
|
---|
136 | Cascade c;
|
---|
137 | if (layer == null) {
|
---|
138 | c = env.mc.getCascade(env.layer);
|
---|
139 | } else {
|
---|
140 | c = env.mc.getCascade(layer);
|
---|
141 | }
|
---|
142 | return c.get(key);
|
---|
143 | }
|
---|
144 |
|
---|
145 | public Boolean is_prop_set(String key) {
|
---|
146 | return is_prop_set(key, null);
|
---|
147 | }
|
---|
148 |
|
---|
149 | public Boolean is_prop_set(String key, String layer) {
|
---|
150 | Cascade c;
|
---|
151 | if (layer == null) {
|
---|
152 | // env.layer is null if expression is evaluated
|
---|
153 | // in ExpressionCondition, but MultiCascade.getCascade
|
---|
154 | // handles this
|
---|
155 | c = env.mc.getCascade(env.layer);
|
---|
156 | } else {
|
---|
157 | c = env.mc.getCascade(layer);
|
---|
158 | }
|
---|
159 | return c.containsKey(key);
|
---|
160 | }
|
---|
161 |
|
---|
162 | public String get_tag_value(String key) {
|
---|
163 | return env.osm.get(key);
|
---|
164 | }
|
---|
165 |
|
---|
166 | public boolean has_tag_key(String key) {
|
---|
167 | return env.osm.hasKey(key);
|
---|
168 | }
|
---|
169 |
|
---|
170 | public boolean not(boolean b) {
|
---|
171 | return !b;
|
---|
172 | }
|
---|
173 |
|
---|
174 | public boolean greater_equal(float a, float b) {
|
---|
175 | return a >= b;
|
---|
176 | }
|
---|
177 |
|
---|
178 | public boolean less_equal(float a, float b) {
|
---|
179 | return a <= b;
|
---|
180 | }
|
---|
181 |
|
---|
182 | public boolean greater(float a, float b) {
|
---|
183 | return a > b;
|
---|
184 | }
|
---|
185 |
|
---|
186 | public boolean less(float a, float b) {
|
---|
187 | return a < b;
|
---|
188 | }
|
---|
189 |
|
---|
190 | public int length(String s) {
|
---|
191 | return s.length();
|
---|
192 | }
|
---|
193 |
|
---|
194 | @SuppressWarnings("unchecked")
|
---|
195 | public boolean equal(Object a, Object b) {
|
---|
196 | // make sure the casts are done in a meaningful way, so
|
---|
197 | // the 2 objects really can be considered equal
|
---|
198 | for (Class klass : new Class[] {
|
---|
199 | Float.class, Boolean.class, Color.class, float[].class, String.class }) {
|
---|
200 | Object a2 = Cascade.convertTo(a, klass);
|
---|
201 | Object b2 = Cascade.convertTo(b, klass);
|
---|
202 | if (a2 != null && b2 != null && a2.equals(b2))
|
---|
203 | return true;
|
---|
204 | }
|
---|
205 | return false;
|
---|
206 | }
|
---|
207 |
|
---|
208 | public Boolean JOSM_search(String s) {
|
---|
209 | Match m;
|
---|
210 | try {
|
---|
211 | m = SearchCompiler.compile(s, false, false);
|
---|
212 | } catch (ParseError ex) {
|
---|
213 | return null;
|
---|
214 | }
|
---|
215 | return m.match(env.osm);
|
---|
216 | }
|
---|
217 |
|
---|
218 | public String JOSM_pref(String s, String def) {
|
---|
219 | String res = Main.pref.get(s, null);
|
---|
220 | return res != null ? res : def;
|
---|
221 | }
|
---|
222 |
|
---|
223 | public Color JOSM_pref_color(String s, Color def) {
|
---|
224 | Color res = Main.pref.getColor(s, null);
|
---|
225 | return res != null ? res : def;
|
---|
226 | }
|
---|
227 | }
|
---|
228 |
|
---|
229 | @Override
|
---|
230 | public Object evaluate(Environment env) {
|
---|
231 | if (equal(name, "cond")) { // this needs special handling since only one argument should be evaluated
|
---|
232 | if (args.size() != 3)
|
---|
233 | return null;
|
---|
234 | Boolean b = Cascade.convertTo(args.get(0).evaluate(env), boolean.class);
|
---|
235 | if (b == null)
|
---|
236 | return null;
|
---|
237 | return args.get(b ? 0 : 1).evaluate(env);
|
---|
238 | }
|
---|
239 | if (equal(name, "and")) {
|
---|
240 | for (Expression arg : args) {
|
---|
241 | Boolean b = Cascade.convertTo(arg.evaluate(env), boolean.class);
|
---|
242 | if (b == null || !b)
|
---|
243 | return false;
|
---|
244 | }
|
---|
245 | return true;
|
---|
246 | }
|
---|
247 | if (equal(name, "or")) {
|
---|
248 | for (Expression arg : args) {
|
---|
249 | Boolean b = Cascade.convertTo(arg.evaluate(env), boolean.class);
|
---|
250 | if (b != null && b)
|
---|
251 | return true;
|
---|
252 | }
|
---|
253 | return false;
|
---|
254 | }
|
---|
255 | EvalFunctions fn = new EvalFunctions();
|
---|
256 | fn.env = env;
|
---|
257 | Method[] customMethods = EvalFunctions.class.getDeclaredMethods();
|
---|
258 | List<Method> allMethods = new ArrayList<Method>();
|
---|
259 | allMethods.addAll(Arrays.asList(customMethods));
|
---|
260 | try {
|
---|
261 | allMethods.add(Math.class.getMethod("abs", float.class));
|
---|
262 | allMethods.add(Math.class.getMethod("acos", double.class));
|
---|
263 | allMethods.add(Math.class.getMethod("asin", double.class));
|
---|
264 | allMethods.add(Math.class.getMethod("atan", double.class));
|
---|
265 | allMethods.add(Math.class.getMethod("atan2", double.class, double.class));
|
---|
266 | allMethods.add(Math.class.getMethod("ceil", double.class));
|
---|
267 | allMethods.add(Math.class.getMethod("cos", double.class));
|
---|
268 | allMethods.add(Math.class.getMethod("cosh", double.class));
|
---|
269 | allMethods.add(Math.class.getMethod("exp", double.class));
|
---|
270 | allMethods.add(Math.class.getMethod("floor", double.class));
|
---|
271 | allMethods.add(Math.class.getMethod("log", double.class));
|
---|
272 | allMethods.add(Math.class.getMethod("max", float.class, float.class));
|
---|
273 | allMethods.add(Math.class.getMethod("min", float.class, float.class));
|
---|
274 | allMethods.add(Math.class.getMethod("random"));
|
---|
275 | allMethods.add(Math.class.getMethod("round", float.class));
|
---|
276 | allMethods.add(Math.class.getMethod("signum", double.class));
|
---|
277 | allMethods.add(Math.class.getMethod("sin", double.class));
|
---|
278 | allMethods.add(Math.class.getMethod("sinh", double.class));
|
---|
279 | allMethods.add(Math.class.getMethod("sqrt", double.class));
|
---|
280 | allMethods.add(Math.class.getMethod("tan", double.class));
|
---|
281 | allMethods.add(Math.class.getMethod("tanh", double.class));
|
---|
282 | } catch (NoSuchMethodException ex) {
|
---|
283 | throw new RuntimeException(ex);
|
---|
284 | } catch (SecurityException ex) {
|
---|
285 | throw new RuntimeException(ex);
|
---|
286 | }
|
---|
287 | for (Method m : allMethods) {
|
---|
288 | if (!m.getName().equals(name))
|
---|
289 | continue;
|
---|
290 | Class<?>[] expectedParameterTypes = m.getParameterTypes();
|
---|
291 | Object[] convertedArgs = new Object[expectedParameterTypes.length];
|
---|
292 |
|
---|
293 | if (expectedParameterTypes.length == 1 && expectedParameterTypes[0].isArray())
|
---|
294 | {
|
---|
295 | Class<?> arrayComponentType = expectedParameterTypes[0].getComponentType();
|
---|
296 | Object arrayArg = Array.newInstance(arrayComponentType, args.size());
|
---|
297 | for (int i=0; i<args.size(); ++i)
|
---|
298 | {
|
---|
299 | Object o = Cascade.convertTo(args.get(i).evaluate(env), arrayComponentType);
|
---|
300 | if (o == null)
|
---|
301 | return null;
|
---|
302 | Array.set(arrayArg, i, o);
|
---|
303 | }
|
---|
304 | convertedArgs[0] = arrayArg;
|
---|
305 | } else {
|
---|
306 | if (args.size() != expectedParameterTypes.length)
|
---|
307 | continue;
|
---|
308 | for (int i=0; i<args.size(); ++i) {
|
---|
309 | convertedArgs[i] = Cascade.convertTo(args.get(i).evaluate(env), expectedParameterTypes[i]);
|
---|
310 | if (convertedArgs[i] == null)
|
---|
311 | return null;
|
---|
312 | }
|
---|
313 | }
|
---|
314 | Object result = null;
|
---|
315 | try {
|
---|
316 | result = m.invoke(fn, convertedArgs);
|
---|
317 | } catch (IllegalAccessException ex) {
|
---|
318 | throw new RuntimeException(ex);
|
---|
319 | } catch (IllegalArgumentException ex) {
|
---|
320 | throw new RuntimeException(ex);
|
---|
321 | } catch (InvocationTargetException ex) {
|
---|
322 | System.err.println(ex);
|
---|
323 | return null;
|
---|
324 | }
|
---|
325 | return result;
|
---|
326 | }
|
---|
327 | return null;
|
---|
328 | }
|
---|
329 |
|
---|
330 | @Override
|
---|
331 | public String toString() {
|
---|
332 | return name + "(" + Utils.join(", ", args) + ")";
|
---|
333 | }
|
---|
334 |
|
---|
335 | }
|
---|
336 | }
|
---|