private void handle_preproc_directive() {
int ch = -1;
while ((ch = get_ch()) != -1 && Character.isWhitespace(ch)) {}
ScanLocation scan_loc = getLocation();
String type;
if (ch == -1) {
type = "";
} else {
type = readPreProcIdentifier(ch);
if (type == null) {
type = "";
}
}
if (type.equals("ifdef") || type.equals("ifndef") || type.equals("elsif")) {
// TODO: line number tracking
ch = skipWhite(get_ch());
// TODO: evaluate the expression?
String remainder = readPreProcIdentifier(ch);
if (remainder != null) {
remainder = remainder.trim();
} else {
remainder = "";
}
// Add a new entry to the referenced macros
add_macro_reference(remainder);
if (type.equals("ifdef")) {
if (fDebugEn) {
fLog.debug("ifdef \"" + remainder + "\": " + fDefineProvider.isDefined(remainder, -1));
}
boolean active = fDefineProvider.isDefined(remainder, -1);
enter_ifdef(scan_loc, active);
} else if (type.equals("ifndef")) {
boolean active = !fDefineProvider.isDefined(remainder, -1);
if (fDebugEn) {
fLog.debug("ifndef \"" + remainder + "\": " + active);
}
enter_ifdef(scan_loc, active);
} else { // elsif
boolean active = fDefineProvider.isDefined(remainder, -1);
enter_elsif(scan_loc, active);
}
} else if (type.equals("else")) {
enter_else(scan_loc);
} else if (type.equals("endif")) {
leave_ifdef(scan_loc);
} else if (fIgnoredDirectives.contains(type)) {
// Skip entire line
readLine(get_ch());
} else if (type.equals("define")) {
SVDBLocation location =
new SVDBLocation(scan_loc.getFileId(), scan_loc.getLineNo(), scan_loc.getLinePos());
SVDBMacroDef m = new SVDBMacroDef();
// TODO: save file?
// TODO: line numbers
ch = skipWhite(get_ch());
m.setName(readIdentifier(ch));
m.setLocation(location);
fParamList.clear();
ch = get_ch();
if (ch == '(') {
// Has parameters
List<SVDBMacroDefParam> param_list = new ArrayList<SVDBMacroDefParam>();
do {
ch = skipWhite(get_ch());
if (!(Character.isJavaIdentifierPart(ch))) {
break;
} else {
String p = readIdentifier(ch);
String dflt = null;
ch = skipWhite(get_ch());
if (ch == '=') {
// Read default value
ch = skipWhite(get_ch());
if (ch == '"') {
// String
dflt = readString(ch);
dflt = "\"" + dflt + "\"";
} else {
// Read up to comma or close bracket
startCapture(ch);
while ((ch = get_ch()) != -1 && ch != ',' && ch != ')') {}
unget_ch(ch);
dflt = endCapture();
}
} else {
unget_ch(ch);
}
param_list.add(new SVDBMacroDefParam(p, dflt));
}
ch = skipWhite(get_ch());
} while (ch == ',');
m.setParameters(param_list);
if (ch == ')') {
ch = get_ch();
}
}
// Now, read the remainder of the definition
String define = readLine(ch);
if (define == null) {
define = ""; // define this macro as existing
}
/* We should carry-through the single-line comments. However, this is only
* true in the case of a single-line macro. Multi-line macros get to keep
* their single-line comments
*/
int last_comment;
if ((last_comment = define.lastIndexOf("//")) != -1) {
int lr = define.indexOf('\n', last_comment);
if (lr == -1) {
// Nothing beyond this comment
define = define.substring(0, define.indexOf("//"));
}
}
m.setDef(define);
// TODO: need to warn on re-definition?
if (ifdef_enabled()) {
addMacro(m);
SVPreProc2InputData in = currentRealFile();
// Add the macro to the pre-processor version of the file
if (in != null && in.getFileTree() != null && in.getFileTree().getSVDBFile() != null) {
in.getFileTree().getSVDBFile().addChildItem(m);
in.getFileTree().addToMacroSet(m);
}
}
} else if (type.equals("include")) {
ch = skipWhite(get_ch());
if (ch == '"') {
String inc = readString(ch);
if (inc.length() > 2 && ifdef_enabled()) {
// TODO: need to save the include statement in the pre-proc view?
// Process include and switch to new file
if (fIncFileProvider != null) {
Tuple<String, List<SVDBFileTreeMacroList>> defs;
Tuple<String, InputStream> in;
// TODO: for now, assuming accumulated pre-processor state
// doesn't change file content. This isn't precisely correct.
defs = fIncFileProvider.findCachedIncFile(inc);
SVPreProc2InputData curr_in = fInputCurr;
if (defs != null) {
// Add in the macros from the included file
for (SVDBFileTreeMacroList l : defs.second()) {
for (SVDBMacroDef m : l.getMacroList()) {
addMacro(m);
}
}
// TODO: Need to mark as a 'virtual' include?
SVDBInclude svdb_inc = new SVDBInclude(inc);
svdb_inc.setLocation(
new SVDBLocation(
scan_loc.getFileId(), scan_loc.getLineNo(), scan_loc.getLinePos()));
curr_in.getFileTree().getSVDBFile().addChildItem(svdb_inc);
SVDBFileTree ft_i = new SVDBFileTree(defs.first());
ft_i.setParent(curr_in.getFileTree());
curr_in.getFileTree().addIncludedFileTree(ft_i);
for (SVDBFileTreeMacroList ml : defs.second()) {
for (SVDBMacroDef m : ml.getMacroList()) {
ft_i.addToMacroSet(m);
}
}
} else if ((in = fIncFileProvider.findIncFile(inc)) != null && in.second() != null) {
if (fDebugEn) {
fLog.debug("Switching from file " + curr_in.getFileName() + " to " + in.first());
}
// TODO: Add tracking data for new file
// Find the root file path
String rootfile = fInputStack.get(0).getFileName();
fIncFileProvider.addCachedIncFile(in.first(), rootfile);
SVDBInclude svdb_inc = new SVDBInclude(inc);
svdb_inc.setLocation(
new SVDBLocation(
scan_loc.getFileId(), scan_loc.getLineNo(), scan_loc.getLinePos()));
curr_in.getFileTree().getSVDBFile().addChildItem(svdb_inc);
enter_file(in.first(), in.second());
} else {
SVDBLocation location =
new SVDBLocation(
scan_loc.getFileId(), scan_loc.getLineNo(), scan_loc.getLinePos());
SVDBMarker m =
new SVDBMarker(
MarkerType.Error,
MarkerKind.MissingInclude,
"Failed to find include file " + inc);
m.setLocation(location);
// SVPreProc2InputData curr_in = fInputCurr;
curr_in.getFileTree().fMarkers.add(m);
// TODO: add missing-include error
if (fDebugEn) {
fLog.debug("Failed to find include file " + inc);
}
}
}
} else {
inc = "";
}
}
} else if (type.equals("__LINE__")) {
if (ifdef_enabled()) {
output("" + fInputCurr.getLineNo());
}
} else if (type.equals("__FILE__")) {
if (ifdef_enabled()) {
output("\"" + fInputCurr.getFileName() + "\"");
}
} else if (type.equals("pragma")) {
ch = skipWhite(get_ch());
String id = readIdentifier(ch);
if (id != null) {
// Ignore everything in the 'protected' region.
// Not much we can meaningfully show...
if (id.equals("protect")) {
ch = skipWhite(get_ch());
id = readIdentifier(ch);
if (id != null) {
if (id.equals("begin_protected")) {
enter_ifdef(scan_loc, false);
} else if (id.equals("end_protected")) {
leave_ifdef(scan_loc);
}
}
}
}
} else if (type.equals("protected")) {
enter_ifdef(scan_loc, false);
} else if (type.equals("endprotected")) {
leave_ifdef(scan_loc);
} else if (!type.equals("")) {
// Note: type="" occurs when no identifier followed the tick
// macro expansion.
// TODO: is TmpBuffer available?
fTmpBuffer.setLength(0);
fTmpBuffer.append('`');
fTmpBuffer.append(type);
// If we're in a disabled section, don't try to expand
if (ifdef_enabled()) {
// Read the full string
// Add a reference for this macro
add_macro_reference(type);
boolean is_defined = fDefineProvider.isDefined(type, -1);
if (!is_defined) {
SVDBLocation location =
new SVDBLocation(scan_loc.getFileId(), scan_loc.getLineNo(), scan_loc.getLinePos());
SVDBMarker m =
new SVDBMarker(
MarkerType.Error, MarkerKind.UndefinedMacro, "Macro " + type + " undefined");
m.setLocation(location);
fInputCurr.getFileTree().fMarkers.add(m);
}
if (fDefineProvider.hasParameters(type, fInputCurr.getLineNo()) || !is_defined) {
// Try to read the parameter list
ch = get_ch();
// skip up to new-line or non-whitespace
if (!is_defined) {
// For undefined macros, only search up to end-of-line
while (ch != -1 && Character.isWhitespace(ch) && ch != '\n') {
ch = get_ch();
}
} else {
// For defined macros, skip all whitespace
while (ch != -1 && Character.isWhitespace(ch)) {
ch = get_ch();
}
}
if (ch == '(') {
fTmpBuffer.append((char) ch);
// Read the parameter list
int matchLevel = 1, last_ch = -1;
boolean in_string = false;
do {
ch = get_ch();
if (!in_string) {
if (ch == '(') {
matchLevel++;
} else if (ch == ')') {
matchLevel--;
} else if (ch == '\"' && last_ch != '\\') {
in_string = true;
}
} else if (ch == '\"' && last_ch != '\\') {
in_string = false;
}
if (ch != -1) {
fTmpBuffer.append((char) ch);
}
} while (ch != -1 && matchLevel > 0);
} else if (is_defined) {
unget_ch(ch);
} else {
unget_ch(ch);
}
}
if (!is_defined) {
// Leave a breadcrumb for the lexer
output("`undefined");
} else if (fDefineProvider != null) {
try {
String exp =
fDefineProvider.expandMacro(
fTmpBuffer.toString(), fInputCurr.getFileName(), fInputCurr.getLineNo());
if (fDebugEn) {
fLog.debug("Expansion of \"" + fTmpBuffer.toString() + "\" == " + exp);
}
SVPreProc2InputData in =
new SVPreProc2InputData(
this, new StringInputStream(exp), "ANONYMOUS", fInputCurr.getFileId(), false);
fInputStack.push(in);
fInputCurr = in;
} catch (Exception e) {
/*
System.out.println("Exception while expanding \"" +
fTmpBuffer.toString() + "\" @ " +
getLocation().getFileName() + ":" +
getLocation().getLineNo());
*/
e.printStackTrace();
}
}
}
}
}
public void addMacro(SVDBMacroDef macro) {
if (fMacroMap.containsKey(macro.getName())) {
fMacroMap.remove(macro.getName());
}
fMacroMap.put(macro.getName(), macro);
}
