diff options
Diffstat (limited to 'systemtap/org.eclipse.linuxtools.systemtap.ui.ide/src/org/eclipse/linuxtools/internal/systemtap/ui/ide/structures/FunctionParser.java')
| -rw-r--r-- | systemtap/org.eclipse.linuxtools.systemtap.ui.ide/src/org/eclipse/linuxtools/internal/systemtap/ui/ide/structures/FunctionParser.java | 298 |
1 files changed, 149 insertions, 149 deletions
diff --git a/systemtap/org.eclipse.linuxtools.systemtap.ui.ide/src/org/eclipse/linuxtools/internal/systemtap/ui/ide/structures/FunctionParser.java b/systemtap/org.eclipse.linuxtools.systemtap.ui.ide/src/org/eclipse/linuxtools/internal/systemtap/ui/ide/structures/FunctionParser.java index 904ac20c42..1c5961665d 100644 --- a/systemtap/org.eclipse.linuxtools.systemtap.ui.ide/src/org/eclipse/linuxtools/internal/systemtap/ui/ide/structures/FunctionParser.java +++ b/systemtap/org.eclipse.linuxtools.systemtap.ui.ide/src/org/eclipse/linuxtools/internal/systemtap/ui/ide/structures/FunctionParser.java @@ -34,154 +34,154 @@ import org.eclipse.linuxtools.systemtap.structures.TreeNode; */ public class FunctionParser extends TapsetParser { - static FunctionParser parser = null; - private TreeNode functions; - - /** - * The descriptor used for unresolvable types. - */ - public static final String UNKNOWN_TYPE = "unknown"; //$NON-NLS-1$ - - private static final String functionRegex = "(?s)(?<!\\w)function\\s+{0}(?:\\s*:\\s*(\\w+))?\\s*\\(([^)]+?)?\\)"; //$NON-NLS-1$ - private static final Pattern pFunction = Pattern.compile("function (?!_)(\\w+) \\(.*?\\)"); //$NON-NLS-1$ - private static final Pattern pParams = Pattern.compile("(\\w+)(?:\\s*:\\s*(\\w+))?"); //$NON-NLS-1$ - private static final Pattern pAllCaps = Pattern.compile("[A-Z_1-9]*"); //$NON-NLS-1$ - private static final Pattern pReturn = Pattern.compile("\\sreturn\\W"); //$NON-NLS-1$ - - public static FunctionParser getInstance(){ - if (parser != null) { - return parser; - } - parser = new FunctionParser(); - return parser; - } - - private FunctionParser() { - super("Function Parser"); //$NON-NLS-1$ - } - - /** - * Returns the root node of the tree of functions generated by - * parseFiles. Functions are grouped by source file. - * @return A tree of tapset functions grouped by file. - */ - public synchronized TreeNode getFunctions() { - return functions; - } - - /** - * This method will clean up everything from the run. - */ - public void dispose() { - functions.dispose(); - } - - @Override - protected IStatus run(IProgressMonitor monitor) { - boolean cancelled = runPass2Functions(); - functions.sortTree(); - fireUpdateEvent(); //Inform listeners that everything is done - return new Status(!cancelled ? IStatus.OK : IStatus.CANCEL, IDEPlugin.PLUGIN_ID, ""); //$NON-NLS-1$ - } - - /** - * This method is used to build up the list of functions that were found - * during the first pass of stap. Stap is invoked by: $stap -v -p1 -e - * 'probe begin{}' and parsing the output. - * - * FunctionTree organized as: - * Root->Functions->Parameters - * - * @return <code>false</code> if a cancellation prevented all probes from being added; - * <code>true</code> otherwise. - */ - private boolean runPass2Functions() { - String tapsetContents = SharedParser.getInstance().getTapsetContents(); - if (cancelRequested) { - return false; - } - // Create a new function tree each time, so as to not add duplicates - functions = new TreeNode("", false); //$NON-NLS-1$ - if (tapsetContents == null) { - // Functions are only drawn from the tapset dump, so exit if it's empty. - return true; - } - try (Scanner st = new Scanner(tapsetContents)) { - String filename = null; - String scriptText = null; - - SharedParser sparser = SharedParser.getInstance(); - while (st.hasNextLine()) { - if (cancelRequested) { - return false; - } - String tok = st.nextLine(); - Matcher mFilename = sparser.filePattern.matcher(tok); - if (mFilename.matches()) { - filename = mFilename.group(1).toString(); - scriptText = null; - } else if (filename != null) { - Matcher mFunction = pFunction.matcher(tok); - if (mFunction.matches()) { - String functionName = mFunction.group(1); - if (pAllCaps.matcher(functionName).matches()) { - // Ignore ALL_CAPS functions, since they are not meant for end-user use. - continue; - } - if (scriptText == null) { - // If this is the first time seeing this file, remove its comments. - scriptText = CommentRemover.execWithFile(filename); - } - addFunctionFromScript(functionName, scriptText, filename); - } - } - } - return true; - } - } - - private void addFunctionFromScript(String functionName, String scriptText, String scriptFilename) { - String regex = MessageFormat.format(functionRegex, functionName); - Matcher mScript = Pattern.compile(regex).matcher(scriptText); - if (mScript.find()) { - String functionLine = mScript.group(); - String functionType = mScript.group(1); - // If the function has no return type, look for a "return" statement to check - // if it's really a void function, or if its return type is just unspecified - if (functionType == null && getNextBlockContents(scriptText, mScript.end(), pReturn)) { - functionType = UNKNOWN_TYPE; - } - TreeDefinitionNode function = new TreeDefinitionNode( - new FunctionNodeData(functionLine, functionType), - functionName, scriptFilename, true); - functions.add(function); - addParamsFromString(mScript.group(2), function); - } - } - - private boolean getNextBlockContents(String scriptText, int start, Pattern p) { - int end, bcount = 1; - start = scriptText.indexOf('{', start) + 1; - for (end = start; end < scriptText.length(); end++) { - char c = scriptText.charAt(end); - if (c == '{') { - bcount++; - } else if (c == '}' && --bcount == 0) { - break; - } - } - return p.matcher(scriptText.substring(start, end)).find(); - } - - private void addParamsFromString(String params, TreeNode parentFunction) { - if (params != null) { - Matcher mParams = pParams.matcher(params); - while (mParams.find()) { - parentFunction.add(new TreeNode( - new FuncparamNodeData(mParams.group(), mParams.group(2)), - mParams.group(1), false)); - } - } - } + static FunctionParser parser = null; + private TreeNode functions; + + /** + * The descriptor used for unresolvable types. + */ + public static final String UNKNOWN_TYPE = "unknown"; //$NON-NLS-1$ + + private static final String functionRegex = "(?s)(?<!\\w)function\\s+{0}(?:\\s*:\\s*(\\w+))?\\s*\\(([^)]+?)?\\)"; //$NON-NLS-1$ + private static final Pattern pFunction = Pattern.compile("function (?!_)(\\w+) \\(.*?\\)"); //$NON-NLS-1$ + private static final Pattern pParams = Pattern.compile("(\\w+)(?:\\s*:\\s*(\\w+))?"); //$NON-NLS-1$ + private static final Pattern pAllCaps = Pattern.compile("[A-Z_1-9]*"); //$NON-NLS-1$ + private static final Pattern pReturn = Pattern.compile("\\sreturn\\W"); //$NON-NLS-1$ + + public static FunctionParser getInstance(){ + if (parser != null) { + return parser; + } + parser = new FunctionParser(); + return parser; + } + + private FunctionParser() { + super("Function Parser"); //$NON-NLS-1$ + } + + /** + * Returns the root node of the tree of functions generated by + * parseFiles. Functions are grouped by source file. + * @return A tree of tapset functions grouped by file. + */ + public synchronized TreeNode getFunctions() { + return functions; + } + + /** + * This method will clean up everything from the run. + */ + public void dispose() { + functions.dispose(); + } + + @Override + protected IStatus run(IProgressMonitor monitor) { + boolean cancelled = runPass2Functions(); + functions.sortTree(); + fireUpdateEvent(); //Inform listeners that everything is done + return new Status(!cancelled ? IStatus.OK : IStatus.CANCEL, IDEPlugin.PLUGIN_ID, ""); //$NON-NLS-1$ + } + + /** + * This method is used to build up the list of functions that were found + * during the first pass of stap. Stap is invoked by: $stap -v -p1 -e + * 'probe begin{}' and parsing the output. + * + * FunctionTree organized as: + * Root->Functions->Parameters + * + * @return <code>false</code> if a cancellation prevented all probes from being added; + * <code>true</code> otherwise. + */ + private boolean runPass2Functions() { + String tapsetContents = SharedParser.getInstance().getTapsetContents(); + if (cancelRequested) { + return false; + } + // Create a new function tree each time, so as to not add duplicates + functions = new TreeNode("", false); //$NON-NLS-1$ + if (tapsetContents == null) { + // Functions are only drawn from the tapset dump, so exit if it's empty. + return true; + } + try (Scanner st = new Scanner(tapsetContents)) { + String filename = null; + String scriptText = null; + + SharedParser sparser = SharedParser.getInstance(); + while (st.hasNextLine()) { + if (cancelRequested) { + return false; + } + String tok = st.nextLine(); + Matcher mFilename = sparser.filePattern.matcher(tok); + if (mFilename.matches()) { + filename = mFilename.group(1).toString(); + scriptText = null; + } else if (filename != null) { + Matcher mFunction = pFunction.matcher(tok); + if (mFunction.matches()) { + String functionName = mFunction.group(1); + if (pAllCaps.matcher(functionName).matches()) { + // Ignore ALL_CAPS functions, since they are not meant for end-user use. + continue; + } + if (scriptText == null) { + // If this is the first time seeing this file, remove its comments. + scriptText = CommentRemover.execWithFile(filename); + } + addFunctionFromScript(functionName, scriptText, filename); + } + } + } + return true; + } + } + + private void addFunctionFromScript(String functionName, String scriptText, String scriptFilename) { + String regex = MessageFormat.format(functionRegex, functionName); + Matcher mScript = Pattern.compile(regex).matcher(scriptText); + if (mScript.find()) { + String functionLine = mScript.group(); + String functionType = mScript.group(1); + // If the function has no return type, look for a "return" statement to check + // if it's really a void function, or if its return type is just unspecified + if (functionType == null && getNextBlockContents(scriptText, mScript.end(), pReturn)) { + functionType = UNKNOWN_TYPE; + } + TreeDefinitionNode function = new TreeDefinitionNode( + new FunctionNodeData(functionLine, functionType), + functionName, scriptFilename, true); + functions.add(function); + addParamsFromString(mScript.group(2), function); + } + } + + private boolean getNextBlockContents(String scriptText, int start, Pattern p) { + int end, bcount = 1; + start = scriptText.indexOf('{', start) + 1; + for (end = start; end < scriptText.length(); end++) { + char c = scriptText.charAt(end); + if (c == '{') { + bcount++; + } else if (c == '}' && --bcount == 0) { + break; + } + } + return p.matcher(scriptText.substring(start, end)).find(); + } + + private void addParamsFromString(String params, TreeNode parentFunction) { + if (params != null) { + Matcher mParams = pParams.matcher(params); + while (mParams.find()) { + parentFunction.add(new TreeNode( + new FuncparamNodeData(mParams.group(), mParams.group(2)), + mParams.group(1), false)); + } + } + } } |