public void closeGrammar(VirtualFile grammarFile) {
String grammarFileName = grammarFile.getPath();
LOG.info("closeGrammar " + grammarFileName + " " + project.getName());
inputPanel.resetStartRuleLabel();
inputPanel.clearErrorConsole();
clearParseTree(); // wipe tree
ANTLRv4PluginController controller = ANTLRv4PluginController.getInstance(project);
PreviewState previewState = controller.getPreviewState(grammarFile);
inputPanel.releaseEditor(previewState);
}
public void ensureStartRuleExists(VirtualFile grammarFile) {
PreviewState previewState =
ANTLRv4PluginController.getInstance(project).getPreviewState(grammarFile);
// if start rule no longer exists, reset display/state.
if (previewState.g != ParsingUtils.BAD_PARSER_GRAMMAR && previewState.startRuleName != null) {
Rule rule = previewState.g.getRule(previewState.startRuleName);
if (rule == null) {
previewState.startRuleName = null;
inputPanel.resetStartRuleLabel();
}
}
}
public void updateParseTreeFromDoc(VirtualFile grammarFile) {
ANTLRv4PluginController controller = ANTLRv4PluginController.getInstance(project);
PreviewState previewState = controller.getPreviewState(grammarFile);
LOG.info("updateParseTreeFromDoc " + grammarFile + " rule " + previewState.startRuleName);
try {
final String inputText = previewState.getEditor().getDocument().getText();
ParsingResult results = controller.parseText(grammarFile, inputText);
if (results != null) {
updateTreeViewer(previewState, results);
} else if (previewState.startRuleName == null) {
indicateNoStartRuleInParseTreePane();
} else {
indicateInvalidGrammarInParseTreePane();
}
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
/** Notify the preview tool window contents that the grammar file has changed */
public void grammarFileSaved(VirtualFile grammarFile) {
String grammarFileName = grammarFile.getPath();
LOG.info("grammarFileSaved " + grammarFileName + " " + project.getName());
ANTLRv4PluginController controller = ANTLRv4PluginController.getInstance(project);
PreviewState previewState = controller.getPreviewState(grammarFile);
ensureStartRuleExists(grammarFile);
inputPanel.grammarFileSaved(grammarFile);
// if the saved grammar is not a pure lexer and there is a start rule, reparse
// means that switching grammars must refresh preview
if (previewState.g != null && previewState.startRuleName != null) {
updateParseTreeFromDoc(previewState.grammarFile);
} else {
setParseTree(Collections.<String>emptyList(), null); // blank tree
}
profilerPanel.grammarFileSaved(previewState, grammarFile);
}
/** Load grammars and set editor component. */
public void switchToGrammar(VirtualFile oldFile, VirtualFile grammarFile) {
String grammarFileName = grammarFile.getPath();
LOG.info("switchToGrammar " + grammarFileName + " " + project.getName());
ANTLRv4PluginController controller = ANTLRv4PluginController.getInstance(project);
PreviewState previewState = controller.getPreviewState(grammarFile);
inputPanel.switchToGrammar(grammarFile);
if (previewState.startRuleName != null) {
updateParseTreeFromDoc(grammarFile);
} else {
setParseTree(Collections.<String>emptyList(), null); // blank tree
}
profilerPanel.switchToGrammar(previewState, grammarFile);
if (previewState.g == null && previewState.lg != null) {
setEnabled(false);
} else {
setEnabled(true);
}
}