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bug #191121, fix perfomance problems in C99 parser by making the parser object a singleton

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This commit is contained in:
Mike Kucera 2007-06-07 13:57:38 +00:00
parent 398742f0b8
commit 2b6e354084
1 changed files with 30 additions and 5 deletions
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33
upc/org.eclipse.cdt.core.parser.upc/src/org/eclipse/cdt/internal/core/dom/parser/upc/UPCParser.java
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@ -172,9 +172,9 @@ public class UPCParser extends PrsStream implements RuleAction , IParserActionTo
}
private UPCParserAction action = new UPCParserAction (this, UPCParserprs.orderedTerminalSymbols);
private UPCParserAction action = null;
private List commentTokens = null;
private IKeywordMap keywordMap = new UPCKeywordMap ();
private List commentTokens = new ArrayList();
public UPCParser() { // constructor
this(new C99Lexer() {
@ -205,11 +205,36 @@ public List getCommentTokens() {
return commentTokens;
}
public void resetTokenStream() {
super.resetTokenStream();
action = new UPCParserAction (this, UPCParserprs.orderedTerminalSymbols);
commentTokens = new ArrayList();
}
public IParseResult parse() {
// this has to be done, or... kaboom!
setStreamLength(getSize());
// do the actual parsing, -1 means full error handling
parser(null, -1);
final int errorRepairCount = -1; // -1 means full error handling
if(btParser == null) {
parser(null, errorRepairCount);
}
else {
try
{
// reuse the same btParser object for speed
// (creating an new instance for every translation unit is dirt slow)
btParser.parse(errorRepairCount);
}
catch (BadParseException e)
{
reset(e.error_token); // point to error token
DiagnoseParser diagnoseParser = new DiagnoseParser(this, prs);
diagnoseParser.diagnose(e.error_token);
}
}
IASTTranslationUnit tu = action.getAST();
boolean encounteredError = action.encounteredError();