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package bjc.rgens.parser;
import bjc.rgens.parser.templates.GrammarTemplate;
import java.io.IOException;
import java.net.URISyntaxException;
import java.net.URL;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Random;
import static bjc.rgens.parser.RGrammarLogging.*;
/**
* Test for new grammar syntax.
*
* @author EVE
*/
public class RGrammarTest {
/**
* Main method.
*
* @param args
* Unused CLI args.
*/
public static void main(String[] args) {
URL rsc = RGrammarTest.class.getResource("/server-config-sample.gcfg");
try {
/* Load a grammar set. */
Path cfgPath = Paths.get(rsc.toURI());
ConfigSet cfgSet = ConfigLoader.fromConfigFile(cfgPath);
for(RGrammarSet gramSet : cfgSet.grammars.values()) {
testGrammarSet(gramSet);
}
for(GrammarTemplate template : cfgSet.templates.values()) {
testTemplate(template, cfgSet.grammars.get("default"));
}
} catch (IOException ioex) {
ioex.printStackTrace();
} catch (URISyntaxException urisex) {
urisex.printStackTrace();
}
}
private static void testTemplate(GrammarTemplate template, RGrammarSet set) {
System.out.printf("Generating for template %s\n", template);
Random rnd = new Random();
for(int i = 0; i < 10; i++) {
GenerationState state = GenerationState.fromGrammar(rnd, set.exportGrammar);
template.generate(state);
String res = state.getContents();
if(res.length() > 120) {
System.out.printf("\t\n\tContents: %s\n\t\n", res);
} else {
System.out.printf("\tContents: %s\n", res);
}
}
}
private static void testGrammarSet(RGrammarSet gramSet) {
/* Generate rule suggestions for all the grammars in the set. */
for (String gramName : gramSet.getGrammars()) {
long startSuggTime = System.nanoTime();
gramSet.getGrammar(gramName).generateSuggestions();
long endSuggTime = System.nanoTime();
long suggDur = endSuggTime - startSuggTime;
perf("Generated rule suggestions for %s in %d ns (%f s)", gramName, suggDur, suggDur / 1000000000.0);
}
System.err.printf("\n\n");
/* Generate for each exported rule. */
for (String exportName : gramSet.getExportedRules()) {
/* Where we loaded the rule from. */
String loadSrc = gramSet.loadedFrom(gramSet.exportedFrom(exportName));
System.out.println();
System.out.printf("Generating for exported rule '%s' from file '%s'\n", exportName, loadSrc);
RGrammar grammar = gramSet.getExportSource(exportName);
long startGenTime = System.nanoTime();
for (int i = 0; i < 100; i++) {
try {
String res = grammar.generate(exportName);
if(exportName.contains("+")) res = res.replaceAll("\\s+", "");
if(res.length() > 120) {
System.out.printf("\t\n\tContents: %s\n\t\n", res);
} else {
System.out.printf("\tContents: %s\n", res);
}
} catch (GrammarException gex) {
/* Print out errors with generation. */
String fmt = "Exported rule %s from %s failed (loaded from '%s')";
System.out.printf("ERROR: " + fmt, exportName, grammar.name, loadSrc);
System.out.println();
System.out.println();
error(gex, fmt, exportName, grammar.name, loadSrc);
}
}
long endGenTime = System.nanoTime();
long genDur = endGenTime - startGenTime;
perf("Generated %s 100 times in %d ns (%f s)", exportName, genDur, genDur / 1000000000.0);
}
}
}
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