--- /dev/null
+package org.simantics.scl.ui.editor.completion;\r
+\r
+import java.io.StringReader;\r
+import java.util.ArrayList;\r
+import java.util.Arrays;\r
+import java.util.Collections;\r
+import java.util.Comparator;\r
+import java.util.List;\r
+\r
+import org.eclipse.jface.text.IDocument;\r
+import org.eclipse.jface.text.contentassist.ICompletionProposal;\r
+import org.simantics.scl.compiler.common.names.Name;\r
+import org.simantics.scl.compiler.compilation.EnvironmentOfModule;\r
+import org.simantics.scl.compiler.elaboration.modules.SCLValue;\r
+import org.simantics.scl.compiler.environment.AmbiguousNameException;\r
+import org.simantics.scl.compiler.environment.Environment;\r
+import org.simantics.scl.compiler.environment.Environments;\r
+import org.simantics.scl.compiler.errors.Failable;\r
+import org.simantics.scl.compiler.internal.parsing.exceptions.SCLSyntaxErrorException;\r
+import org.simantics.scl.compiler.internal.parsing.parser.SCLParserImpl;\r
+import org.simantics.scl.compiler.module.ImportDeclaration;\r
+import org.simantics.scl.compiler.module.Module;\r
+import org.simantics.scl.compiler.module.repository.ImportFailureException;\r
+import org.simantics.scl.compiler.source.TextualModuleSource;\r
+import org.simantics.scl.compiler.types.TCon;\r
+import org.simantics.scl.osgi.SCLOsgi;\r
+\r
+public class SCLTextEditorEnvironment {\r
+\r
+ private String moduleName;\r
+ private SCLCompletionProposal[] proposalCache = new SCLCompletionProposal[0];\r
+ private List<SCLCompletionProposal> moduleProposalCache = new ArrayList<>(0);\r
+ private Environment env;\r
+ \r
+ private List<ImportDeclaration> cachedImports = new ArrayList<>();\r
+ private boolean cacheUpdated = false;\r
+ \r
+ public SCLTextEditorEnvironment(String moduleName) {\r
+ this.moduleName = moduleName;\r
+ }\r
+ \r
+ public void updateModuleName(String moduleName) {\r
+ this.moduleName = moduleName;\r
+ }\r
+ \r
+ public void updateEnvironment(IDocument document) {\r
+ String contents = document.get();\r
+ String[] lines = contents.split("\\R+");\r
+ List<ImportDeclaration> imports = new ArrayList<>();\r
+ imports.addAll(Arrays.asList(TextualModuleSource.DEFAULT_IMPORTS));\r
+ for (String line : lines) {\r
+ line = line.trim();\r
+ if (line.startsWith("import") || line.startsWith("include")) {\r
+ SCLParserImpl parser = new SCLParserImpl(new StringReader(line));\r
+ try {\r
+ ImportDeclaration importDecl = (ImportDeclaration)parser.parseImport();\r
+ imports.add(importDecl);\r
+ } catch (SCLSyntaxErrorException e) {\r
+ // Import cannot be handled, ignore\r
+ }\r
+ }\r
+ }\r
+\r
+ imports = processRelativeImports(imports);\r
+ if (!imports.equals(cachedImports)) {\r
+ cachedImports = imports;\r
+ try {\r
+ env = SCLOsgi.MODULE_REPOSITORY.createEnvironment(cachedImports.toArray(new ImportDeclaration[cachedImports.size()]), null);\r
+ Failable<Module> module = SCLOsgi.MODULE_REPOSITORY.getModule(moduleName);\r
+ if(module.didSucceed())\r
+ env = new EnvironmentOfModule(env, module.getResult()); \r
+ } catch (ImportFailureException e) {\r
+ //e.printStackTrace();\r
+ }\r
+ }\r
+ }\r
+ \r
+ public ICompletionProposal[] getCompletionProposals(String prefix, int offset) {\r
+ int p = prefix.lastIndexOf('.');\r
+ String lastPart = p==-1 ? prefix : prefix.substring(p+1);\r
+ \r
+ List<SCLCompletionProposal> proposals = new ArrayList<>();\r
+ for(SCLValue value : Environments.findValuesForPrefix(env, prefix)) {\r
+ Name name = value.getName();\r
+ if((name.module.equals(moduleName) || !value.isPrivate()) && !(name.name.contains("$") && Character.isLetter(name.name.charAt(0))))\r
+ proposals.add(new SCLCompletionProposal(value, offset - lastPart.length(), lastPart));\r
+ }\r
+ for(TCon type : Environments.findTypesForPrefix(env, prefix)) {\r
+ proposals.add(new SCLCompletionProposal(type.name, type.module, SCLCompletionType.TYPE, offset - lastPart.length(), lastPart));\r
+ }\r
+ \r
+ if(!prefix.contains(".")) {\r
+ for (ImportDeclaration decl : cachedImports) {\r
+ if (decl.localName != null && !decl.localName.isEmpty() && decl.localName.toLowerCase().startsWith(prefix.toLowerCase())) {\r
+ proposals.add(new SCLCompletionProposal(decl.localName, decl.moduleName, SCLCompletionType.CONST, offset - prefix.length(), prefix));\r
+ }\r
+ }\r
+ }\r
+ Collections.sort(proposals, COMPARATOR);\r
+ moduleProposalCache = proposals;\r
+ proposalCache = moduleProposalCache.toArray(new SCLCompletionProposal[moduleProposalCache.size()]);\r
+ return proposalCache;\r
+ }\r
+ \r
+ private ArrayList<ImportDeclaration> processRelativeImports(List<ImportDeclaration> relativeImports) {\r
+ ArrayList<ImportDeclaration> absoluteImports = new ArrayList<ImportDeclaration>(relativeImports.size());\r
+ for(ImportDeclaration relativeImport : relativeImports) {\r
+ if(relativeImport.moduleName.startsWith(".")) {\r
+ String absoluteModuleName = convertRelativeModulePath(relativeImport.moduleName);\r
+ if(absoluteModuleName != null)\r
+ absoluteImports.add(new ImportDeclaration(\r
+ absoluteModuleName, relativeImport.localName,\r
+ relativeImport.reexport, relativeImport.spec));\r
+ }\r
+ else\r
+ absoluteImports.add(relativeImport);\r
+ }\r
+ return absoluteImports;\r
+ }\r
+\r
+ private String convertRelativeModulePath(String relativeModuleName) {\r
+ String originalRelativeModuleName = relativeModuleName;\r
+ int p = moduleName.lastIndexOf('/');\r
+ String parentPackage = p < 0 ? "" : moduleName.substring(0, p);\r
+ while(relativeModuleName.startsWith(".")) {\r
+ if(relativeModuleName.startsWith("./")) {\r
+ relativeModuleName = relativeModuleName.substring(2);\r
+ }\r
+ else if(relativeModuleName.startsWith("../")) {\r
+ relativeModuleName = relativeModuleName.substring(3);\r
+ if(parentPackage.isEmpty()) {\r
+ System.err.println("Couldn't resolve the relative module name " + originalRelativeModuleName + " when the current module name is " + moduleName + ".");\r
+ return null;\r
+ }\r
+ p = parentPackage.lastIndexOf('/');\r
+ parentPackage = p < 0 ? "" : parentPackage.substring(0, p);\r
+ }\r
+ else {\r
+ System.err.println("Couldn't resolve the relative module name " + originalRelativeModuleName + ". It has an invalid syntax.");\r
+ return null;\r
+ }\r
+ }\r
+ return parentPackage + "/" + relativeModuleName;\r
+ }\r
+\r
+ private static final Comparator<SCLCompletionProposal> COMPARATOR = new Comparator<SCLCompletionProposal>() {\r
+\r
+ @Override\r
+ public int compare(SCLCompletionProposal prop1, SCLCompletionProposal prop2) {\r
+ if (prop1.isPrivate() && !prop2.isPrivate())\r
+ return -1;\r
+ else if (!prop1.isPrivate() && prop2.isPrivate())\r
+ return 1;\r
+ return prop1.getName().compareTo(prop2.getName());\r
+ }\r
+ };\r
+\r
+ public SCLValue getValue(String text) {\r
+ try {\r
+ return Environments.getValue(env, text);\r
+ } catch (AmbiguousNameException e) {\r
+ // TODO could also return one of the conflicting alternatives\r
+ return null;\r
+ }\r
+ }\r
+ \r
+ public String getHoverInfo(String text) {\r
+ SCLValue value = getValue(text);\r
+ if (value != null)\r
+ return value.getDocumentation();\r
+ else\r
+ return null;\r
+ }\r
+}\r
Code Review / simantics / platform.git / blobdiff