Fixed oversized parser (#805)

* Fixed oversized parser

* Cleaned

* Autoclrf

* Autoclrf false

* Made test lineending agnostic

rosetta-lang/src/main/java/com/regnosys/rosetta/GenerateRosetta.mwe2

@@ -1,5 +1,8 @@
 module com.regnosys.rosetta.GenerateRosetta
 
+import com.regnosys.rosetta.xcore.compressor.ParserCompressorFragment
+import com.regnosys.rosetta.xcore.extractor.ParserCaseExtractorFragment
+
 import org.eclipse.xtext.xtext.generator.XtextGenerator
 import org.eclipse.xtext.xtext.generator.StandardLanguage
 import org.eclipse.xtext.xtext.generator.parser.antlr.XtextAntlrGeneratorFragment2
@@ -85,6 +88,16 @@ Workflow {
 			formatter = {
 				generateStub = true
 			}
+			fragment = ParserCompressorFragment {
+				// Enabled to produce shorter Java code and ease debugging at the expense of a little uglier (because more dense) code
+				joinLinesEagerly = true
+				grammarFile = "${parentDir}/rosetta-ide/src-gen/main/java/com/regnosys/rosetta/ide/contentassist/antlr/internal/InternalRosettaParser.java"
+				grammarFile = "${parentDir}/rosetta-lang/src-gen/main/java/com/regnosys/rosetta/parser/antlr/internal/InternalRosettaParser.java"
+			}
+			fragment = ParserCaseExtractorFragment {
+				grammarFile = "${parentDir}/rosetta-ide/src-gen/main/java/com/regnosys/rosetta/ide/contentassist/antlr/internal/InternalRosettaParser.java"
+				grammarFile = "${parentDir}/rosetta-lang/src-gen/main/java/com/regnosys/rosetta/parser/antlr/internal/InternalRosettaParser.java"
+			}
 		}
 	}
 }

rosetta-lang/src/test/java/com/regnosys/rosetta/xcore/extractor/ParserCaseExtractorFragmentTest.java

@@ -0,0 +1,46 @@
+package com.regnosys.rosetta.xcore.extractor;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+
+import org.eclipse.xtext.xtext.generator.XtextGenerator;
+import org.eclipse.xtext.xtext.generator.XtextGeneratorLanguage;
+import org.junit.jupiter.api.Test;
+
+import com.google.common.io.Files;
+
+public class ParserCaseExtractorFragmentTest {
+	@Test
+	public void testParserCaseExtractorFragment() throws IOException {
+		File source = new File("src/test/resources/extractor-test/Parser.java");
+		File target = new File("target/extractor-test/Parser.java");
+		target.getParentFile().mkdirs();
+		Files.copy(source, target);
+
+		ParserCaseExtractorFragment fragment = new ParserCaseExtractorFragment();
+		fragment.addGrammarFile(target.toString());
+
+		XtextGeneratorLanguage lang = new XtextGeneratorLanguage();
+		lang.addReferencedResource("platform:/resource/com.regnosys.rosetta/model/Rosetta.xcore");
+		lang.addReferencedResource("platform:/resource/com.regnosys.rosetta/model/RosettaSimple.xcore");
+		lang.addReferencedResource("platform:/resource/com.regnosys.rosetta/model/RosettaExpression.xcore");
+		lang.setGrammarUri(new File("src/main/java", "com.regnosys.rosetta.Rosetta".replace(".", "/") + ".xtext").toURI().toString());
+		lang.addFragment(fragment);
+
+		XtextGenerator generator = new XtextGenerator();
+		generator.addLanguage(lang);
+		generator.initialize();
+
+		fragment.generate();
+
+		File expected = new File("src/test/resources/extractor-test/ExpectedOutputParser.java");
+
+		assertEquals(
+				Files.asCharSource(expected, StandardCharsets.UTF_8).read().replace("\r\n", "\n"),
+				Files.asCharSource(target, StandardCharsets.UTF_8).read().replace("\r\n", "\n")
+			);
+	}
+}