Beispiel #1
0
 protected void createLabel(CElement parent, IToken token) throws CModelException {
   String labelName = token.getImage();
   int index = getGlobalLabelIndex(labelName);
   boolean global = index > 0;
   if (!global) {
     index = registerLabel(labelName);
   }
   AsmLabel label = new AsmLabel(parent, labelName, global, index);
   SourceManipulationInfo labelInfo = label.getSourceManipulationInfo();
   labelInfo.setIdPos(token.getOffset(), token.getLength());
   labelInfo.setPos(token.getOffset(), token.getLength());
   if (fLastLabel != null) {
     fixupLastLabel();
   }
   if (global) {
     // new global label
     if (fLastGlobalLabel != null) {
       fixupLastGlobalLabel();
     }
     fLastGlobalLabel = label;
   } else {
     // add under global label if available
     if (fLastGlobalLabel != null) {
       parent = fLastGlobalLabel;
     }
   }
   fLastLabel = label;
   parent.addChild(label);
 }
Beispiel #2
0
 private void parsePPDefine(CElement parent) throws CModelException, OffsetLimitReachedException {
   int startOffset = fLexer.currentToken().getOffset();
   int nameStart = 0;
   int nameEnd = 0;
   String name = null;
   IToken t = nextToken();
   if (t.getType() == IToken.tIDENTIFIER) {
     nameStart = fLexer.currentToken().getOffset();
     nameEnd = fLexer.currentToken().getEndOffset();
     name = t.getImage();
   }
   if (name == null) {
     return;
   }
   int endOffset = skipToNewLine();
   Macro macro = new Macro(parent, name);
   SourceManipulationInfo macroInfo = macro.getSourceManipulationInfo();
   macroInfo.setIdPos(nameStart, nameEnd - nameStart);
   macroInfo.setPos(startOffset, endOffset - startOffset);
   parent.addChild(macro);
 }
Beispiel #3
0
 private void parsePPDirective(CElement parent) throws CModelException {
   IToken token = nextToken();
   if (token != null && token.getType() == IToken.tIDENTIFIER) {
     final String image = token.getImage();
     if (image.equals("define")) { // $NON-NLS-1$
       try {
         parsePPDefine(parent);
       } catch (OffsetLimitReachedException exc) {
       }
       return;
     } else if (image.equals("include")) { // $NON-NLS-1$
       try {
         parsePPInclude(parent);
       } catch (OffsetLimitReachedException exc) {
       }
       return;
     }
   }
   try {
     skipToNewLine();
   } catch (OffsetLimitReachedException exc) {
   }
 }
Beispiel #4
0
 private boolean parseGlobalDirective() {
   boolean eol = false;
   do {
     IToken t = nextToken();
     if (t == null) {
       break;
     }
     switch (t.getType()) {
       case IToken.tIDENTIFIER:
         registerGlobalLabel(t.getImage());
         break;
       case Lexer.tNEWLINE:
         eol = true;
         break;
       default:
         if (fLineSeparatorChar != 0) {
           if (t.getLength() == 1 && t.getCharImage()[0] == fLineSeparatorChar) {
             eol = true;
           }
         }
     }
   } while (!eol);
   return eol;
 }
Beispiel #5
0
 private void parsePPInclude(CElement parent) throws CModelException, OffsetLimitReachedException {
   int startOffset = fLexer.currentToken().getOffset();
   int nameStart = 0;
   int nameEnd = 0;
   String name = null;
   boolean isStandard = false;
   IToken t = nextToken();
   switch (t.getType()) {
     case IToken.tLT:
       nameStart = fLexer.currentToken().getOffset();
       do {
         t = nextToken();
       } while (t.getType() != IToken.tGT);
       nameEnd = fLexer.currentToken().getEndOffset();
       name = new String(fLexer.getInputChars(nameStart + 1, nameEnd - 1));
       isStandard = true;
       break;
     case IToken.tSTRING:
       nameStart = fLexer.currentToken().getOffset();
       nameEnd = fLexer.currentToken().getEndOffset();
       name = t.getImage().substring(1, t.getLength() - 1);
       break;
     case IToken.tIDENTIFIER:
       nameStart = fLexer.currentToken().getOffset();
       nameEnd = fLexer.currentToken().getEndOffset();
       name = t.getImage();
       break;
     default:
   }
   if (name == null) {
     return;
   }
   int endOffset = skipToNewLine();
   Include include = new Include(parent, name, isStandard);
   SourceManipulationInfo includeInfo = include.getSourceManipulationInfo();
   includeInfo.setIdPos(nameStart, nameEnd - nameStart);
   includeInfo.setPos(startOffset, endOffset - startOffset);
   parent.addChild(include);
 }
 private boolean isKind(final IToken t, final int kind) {
   return t != null && t.getType() == kind;
 }
Beispiel #7
0
  /**
   * Build the model.
   *
   * @param source
   * @throws CModelException
   */
  private void buildModel(final char[] source) throws CModelException {
    fGlobals = new HashMap<String, Counter>();
    fLabels = new HashMap<String, Counter>();
    fLastLabel = null;
    fLastGlobalLabel = null;
    fLastLabelEndOffset = 0;

    final LexerOptions lexerOptions = new LexerOptions();
    fLexer = new Lexer(source, lexerOptions, new LexerLog(), null);

    // if true the next token is the first on a (logical) line
    boolean firstTokenOnLine = true;
    // next token can be an instruction or a label
    boolean expectInstruction = true;
    // inside instruction
    boolean inInstruction = false;

    IToken token = nextToken();
    while (token != null) {
      switch (token.getType()) {
        case IToken.tPOUND:
          if (fLexer.currentTokenIsFirstOnLine()) {
            parsePPDirective(fTranslationUnit);
          }
          break;
        case IToken.tDOT:
          // assembly directive?
          firstTokenOnLine = false;
          if (expectInstruction) {
            expectInstruction = false;
            token = nextToken();
            if (token != null && token.getType() == IToken.tIDENTIFIER) {
              String text = token.getImage();
              if (isGlobalDirective(text)) {
                firstTokenOnLine = parseGlobalDirective();
              } else if (isDataDirective(text)) {
                inInstruction = true;
              }
            }
          }
          break;
        case IToken.tIDENTIFIER:
          // identifier may be a label or part of an instruction
          if (firstTokenOnLine) {
            // peek next char
            char nextChar = source[token.getEndOffset()];
            if (nextChar == ':') {
              createLabel(fTranslationUnit, token);
              expectInstruction = true;
            } else {
              expectInstruction = false;
              inInstruction = true;
            }
            firstTokenOnLine = false;
          } else if (expectInstruction) {
            expectInstruction = false;
            inInstruction = true;
          }
          break;
        case Lexer.tNEWLINE:
          if (!firstTokenOnLine) {
            firstTokenOnLine = true;
            if (inInstruction) {
              fLastLabelEndOffset = fLexer.currentToken().getEndOffset();
            }
          }
          break;
        default:
          expectInstruction = false;
          firstTokenOnLine = false;
          if (fLineSeparatorChar != 0) {
            if (token.getLength() == 1 && token.getCharImage()[0] == fLineSeparatorChar) {
              firstTokenOnLine = true;
            }
          }
      }
      if (firstTokenOnLine) {
        expectInstruction = true;
        inInstruction = false;
      }
      token = nextToken();
    }
    if (!firstTokenOnLine && inInstruction) {
      fLastLabelEndOffset = fLexer.currentToken().getEndOffset();
    }
    if (fLastLabel != null) {
      fixupLastLabel();
    }
    if (fLastGlobalLabel != null) {
      fixupLastGlobalLabel();
    }
  }