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/*******************************************************************************
* Copyright (c) 2000, 2007 QNX Software Systems and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* QNX Software Systems - Initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.debug.mi.core;
import java.util.StringTokenizer;
import org.eclipse.cdt.debug.mi.core.command.CLICommand;
import org.eclipse.cdt.debug.mi.core.command.MIInterpreterExecConsole;
import org.eclipse.cdt.debug.mi.core.event.MIBreakpointChangedEvent;
import org.eclipse.cdt.debug.mi.core.event.MIDetachedEvent;
import org.eclipse.cdt.debug.mi.core.event.MIEvent;
import org.eclipse.cdt.debug.mi.core.event.MIRunningEvent;
import org.eclipse.cdt.debug.mi.core.event.MISignalChangedEvent;
/**
* Transmission command thread blocks on the command Queue
* and wake cmd are available and push them to gdb out channel.
*/
public class CLIProcessor {
MISession session;
public CLIProcessor(MISession s) {
session = s;
}
/**
* An attempt to discover the command type and
* fire an event if necessary.
*/
void processStateChanges(CLICommand cmd) {
String operation = cmd.getOperation().trim();
processStateChanges(cmd.getToken(), operation);
}
void processStateChanges(MIInterpreterExecConsole exec) {
String[] operations = exec.getParameters();
if (operations != null && operations.length > 0) {
processStateChanges(exec.getToken(), operations[0]);
}
}
void processStateChanges(int token, String op) {
String operation = op;
// Get the command name.
int indx = operation.indexOf(' ');
if (indx != -1) {
operation = operation.substring(0, indx).trim();
} else {
operation = operation.trim();
}
// Check the type of command
int type = getSteppingOperationKind(operation);
if (type != -1) {
// if it was a step instruction set state running
session.getMIInferior().setRunning();
MIEvent event = new MIRunningEvent(session, token, type);
session.fireEvent(event);
}
}
/**
* An attempt to discover the command type and
* fire an event if necessary.
*/
void processSettingChanges(CLICommand cmd) {
String operation = cmd.getOperation().trim();
processSettingChanges(cmd.getToken(), operation);
}
void processSettingChanges(MIInterpreterExecConsole exec) {
String[] operations = exec.getParameters();
if (operations != null && operations.length > 0) {
processSettingChanges(exec.getToken(), operations[0]);
}
}
void processSettingChanges(int token, String command) {
// Get the command name.
String operation = command;
int indx = operation.indexOf(' ');
if (indx != -1) {
operation = operation.substring(0, indx).trim();
} else {
operation = operation.trim();
}
// Check the type of command
if (isSettingBreakpoint(operation) ||
isSettingWatchpoint(operation) ||
isChangeBreakpoint(operation) ||
isDeletingBreakpoint(operation)) {
// We know something change, we just do not know what.
// So the easiest way is to let the top layer handle it.
// But we can parse the command line to hint the top layer
// on the breakpoint type.
// See https://bugs.eclipse.org/bugs/show_bug.cgi?id=135250
int hint = MIBreakpointChangedEvent.HINT_NONE;
if (isSettingBreakpoint(operation)) {
hint = getBreakpointHint(command);
}
session.fireEvent(new MIBreakpointChangedEvent(session, 0, hint));
} else if (isSettingSignal(operation)) {
// We do no know which signal let the upper layer find it.
session.fireEvent(new MISignalChangedEvent(session, "")); //$NON-NLS-1$
} else if (isDetach(operation)) {
// if it was a "detach" command change the state.
session.getMIInferior().setDisconnected();
MIEvent event = new MIDetachedEvent(session, token);
session.fireEvent(event);
}
}
static int getSteppingOperationKind(String operation) {
int type = -1;
/* execution commands: n, next, s, step, si, stepi, u, until, finish, return,
c, continue, fg */
if (operation.equals("n") || operation.equals("next")) { //$NON-NLS-1$ //$NON-NLS-2$
type = MIRunningEvent.NEXT;
} else if (operation.equals("ni") || operation.equals("nexti")) { //$NON-NLS-1$ //$NON-NLS-2$
type = MIRunningEvent.NEXTI;
} else if (operation.equals("s") || operation.equals("step")) { //$NON-NLS-1$ //$NON-NLS-2$
type = MIRunningEvent.STEP;
} else if (operation.equals("si") || operation.equals("stepi")) { //$NON-NLS-1$ //$NON-NLS-2$
type = MIRunningEvent.STEPI;
} else if (operation.equals("u") || //$NON-NLS-1$
(operation.startsWith("unt") && "until".indexOf(operation) != -1)) { //$NON-NLS-1$ //$NON-NLS-2$
type = MIRunningEvent.UNTIL;
} else if (operation.startsWith("fin") && "finish".indexOf(operation) != -1) { //$NON-NLS-1$ //$NON-NLS-2$
type = MIRunningEvent.FINISH;
} else if (operation.startsWith("ret") && "return".indexOf(operation) != -1) { //$NON-NLS-1$ //$NON-NLS-2$
type = MIRunningEvent.RETURN;
} else if (operation.equals("c") || operation.equals("fg") || //$NON-NLS-1$ //$NON-NLS-2$
(operation.startsWith("cont") && "continue".indexOf(operation) != -1)) { //$NON-NLS-1$ //$NON-NLS-2$
type = MIRunningEvent.CONTINUE;
} else if (operation.startsWith("sig") && "signal".indexOf(operation) != -1) { //$NON-NLS-1$ //$NON-NLS-2$
type = MIRunningEvent.CONTINUE;
} else if (operation.startsWith("j") && "jump".indexOf(operation) != -1) { //$NON-NLS-1$ //$NON-NLS-2$
type = MIRunningEvent.CONTINUE;
} else if (operation.equals("r") || operation.equals("run")) { //$NON-NLS-1$ //$NON-NLS-2$
type = MIRunningEvent.CONTINUE;
}
return type;
}
/**
* Return true if the operation is a stepping operation.
*
* @param operation
* @return
*/
public static boolean isSteppingOperation(String operation) {
int type = getSteppingOperationKind(operation);
return type != -1;
}
boolean isSettingBreakpoint(String operation) {
boolean isbreak = false;
/* breakpoints: b, break, hbreak, tbreak, rbreak, thbreak */
/* watchpoints: watch, rwatch, awatch, tbreak, rbreak, thbreak */
if ((operation.startsWith("b") && "break".indexOf(operation) != -1) || //$NON-NLS-1$ //$NON-NLS-2$
(operation.startsWith("tb") && "tbreak".indexOf(operation) != -1) || //$NON-NLS-1$ //$NON-NLS-2$
(operation.startsWith("hb") && "hbreak".indexOf(operation) != -1) || //$NON-NLS-1$ //$NON-NLS-2$
(operation.startsWith("thb") && "thbreak".indexOf(operation) != -1) || //$NON-NLS-1$ //$NON-NLS-2$
(operation.startsWith("rb") && "rbreak".indexOf(operation) != -1) || //$NON-NLS-1$ //$NON-NLS-2$
(operation.startsWith("catch"))) { //$NON-NLS-1$
isbreak = true;
}
return isbreak;
}
boolean isSettingWatchpoint(String operation) {
boolean isWatch = false;
/* watchpoints: watch, rwatch, awatch, tbreak, rbreak, thbreak */
if ((operation.startsWith("wa") && "watch".indexOf(operation) != -1) || //$NON-NLS-1$ //$NON-NLS-2$
(operation.startsWith("rw") && "rwatch".indexOf(operation) != -1) || //$NON-NLS-1$ //$NON-NLS-2$
(operation.startsWith("aw") && "awatch".indexOf(operation) != -1)) { //$NON-NLS-1$ //$NON-NLS-2$
isWatch = true;
}
return isWatch;
}
boolean isDeletingBreakpoint(String operation) {
boolean isDelete = false;
/* deleting breaks: clear, delete */
if ((operation.startsWith("cl") && "clear".indexOf(operation) != -1) || //$NON-NLS-1$ //$NON-NLS-2$
(operation.equals("d") || (operation.startsWith("del") && "delete".indexOf(operation) != -1))) { //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
isDelete = true;
}
return isDelete;
}
boolean isChangeBreakpoint(String operation) {
boolean isChange = false;
/* changing breaks: enable, disable */
if ((operation.equals("dis") || operation.equals("disa") || //$NON-NLS-1$ //$NON-NLS-2$
(operation.startsWith("disa") && "disable".indexOf(operation) != -1)) || //$NON-NLS-1$ //$NON-NLS-2$
(operation.equals("en") || (operation.startsWith("en") && "enable".indexOf(operation) != -1)) || //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
(operation.startsWith("ig") && "ignore".indexOf(operation) != -1) || //$NON-NLS-1$ //$NON-NLS-2$
(operation.startsWith("cond") && "condition".indexOf(operation) != -1)) { //$NON-NLS-1$ //$NON-NLS-2$
isChange = true;
}
return isChange;
}
int getBreakpointHint(String command) {
StringTokenizer st = new StringTokenizer(command);
// get operation
String op = st.nextToken();
if (op.startsWith("rb") && "rbreak".indexOf(op) != -1) { //$NON-NLS-1$ //$NON-NLS-2$
// only function breakpoints can be set using rbreak
return MIBreakpointChangedEvent.HINT_NEW_FUNCTION_BREAKPOINT;
}
if (op.equals("catch")) {
return MIBreakpointChangedEvent.HINT_NEW_EVENTBREAKPOINT;
}
if ( !st.hasMoreTokens() ) {
// "break" with no arguments
return MIBreakpointChangedEvent.HINT_NEW_LINE_BREAKPOINT;
}
String token = st.nextToken();
if ("if".equals(token) || "ignore".equals(token) || token.charAt(0) == '+' || token.charAt(0) == '-') { //$NON-NLS-1$ //$NON-NLS-2$
// conditional "break" with no location argument
// or "break +/- offset"
return MIBreakpointChangedEvent.HINT_NEW_LINE_BREAKPOINT;
}
if (token.charAt(0) == '*') {
return MIBreakpointChangedEvent.HINT_NEW_ADDRESS_BREAKPOINT;
}
int index = token.lastIndexOf( ':' );
String lineNumber = token;
if (index != -1 && index+1 < token.length()) {
lineNumber = token.substring(index+1, token.length());
}
try {
Integer.parseInt( lineNumber );
}
catch(NumberFormatException e) {
return MIBreakpointChangedEvent.HINT_NEW_FUNCTION_BREAKPOINT;
}
return MIBreakpointChangedEvent.HINT_NEW_LINE_BREAKPOINT;
}
boolean isSettingSignal(String operation) {
boolean isChange = false;
/* changing signal: handle, signal */
if (operation.startsWith("ha") && "handle".indexOf(operation) != -1) { //$NON-NLS-1$ //$NON-NLS-2$
isChange = true;
}
return isChange;
}
/**
* @param operation
* @return
*/
boolean isDetach(String operation) {
return (operation.startsWith("det") && "detach".indexOf(operation) != -1); //$NON-NLS-1$ //$NON-NLS-2$
}
}
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