Examples of com.google.gwt.dev.jjs.ast.JBlock

com.google.gwt.dev.jjs.ast.JBlock
A list of JStatements.

      if (expression.getType() instanceof JClassType) {
        // Must be an enum; synthesize a call to ordinal().
        expression = new JMethodCall(info, expression,
            program.getIndexedMethod("Enum.ordinal"));
      }
      JBlock block = new JBlock(info);
      // Don't use processStatements here, because it stops at control breaks
      if (x.statements != null) {
        for (Statement stmt : x.statements) {
          JStatement jstmt = dispProcessStatement(stmt);
          if (jstmt != null) {
            block.addStmt(jstmt);
          }
        }
      }
      return new JSwitchStatement(info, expression, block);
    }

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      }
      return new JSwitchStatement(info, expression, block);
    }


    JStatement processStatement(SynchronizedStatement x) {
      JBlock block = (JBlock) dispProcessStatement(x.block);
      JExpression expr = dispProcessExpression(x.expression);
      block.addStmt(0, expr.makeStatement());
      return block;
    }

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      return new JThrowStatement(info, toThrow);
    }


    JStatement processStatement(TryStatement x) {
      SourceInfo info = makeSourceInfo(x);
      JBlock tryBlock = (JBlock) dispProcessStatement(x.tryBlock);
      List<JLocalRef> catchArgs = new ArrayList<JLocalRef>();
      List<JBlock> catchBlocks = new ArrayList<JBlock>();
      if (x.catchBlocks != null) {
        for (int i = 0, c = x.catchArguments.length; i < c; ++i) {
          JLocal local = (JLocal) typeMap.get(x.catchArguments[i].binding);
          catchArgs.add((JLocalRef) createVariableRef(info, local));
        }
        for (int i = 0, c = x.catchBlocks.length; i < c; ++i) {
          catchBlocks.add((JBlock) dispProcessStatement(x.catchBlocks[i]));
        }
      }
      JBlock finallyBlock = (JBlock) dispProcessStatement(x.finallyBlock);
      return new JTryStatement(info, tryBlock, catchArgs, catchBlocks,
          finallyBlock);
    }

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    }


    private void implementMethod(JMethod method, JExpression returnValue) {
      assert method != null;
      JMethodBody body = (JMethodBody) method.getBody();
      JBlock block = body.getBlock();


      SourceInfo info;
      if (block.getStatements().size() > 0) {
        info = block.getStatements().get(0).getSourceInfo();
      } else {
        info = method.getSourceInfo();
      }


      block.clear();
      block.addStmt(new JReturnStatement(info, returnValue));
    }

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        if (stmt instanceof JBlock) {
          /*
           * Promote a sub-block's children to the current block, unless the
           * sub-block contains local declarations as children.
           */
          JBlock block = (JBlock) stmt;
          if (canPromoteBlock(block)) {
            x.removeStmt(i);
            x.addStmts(i, block.getStatements());
            i--;
            didChange = true;
            continue;
          }
        }

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      if (expression instanceof JBooleanLiteral) {
        JBooleanLiteral booleanLiteral = (JBooleanLiteral) expression;


        // If false, replace the for statement with its initializers
        if (!booleanLiteral.getValue()) {
          JBlock block = new JBlock(x.getSourceInfo());
          block.addStmts(x.getInitializers());
          ctx.replaceMe(block);
        }
      }
    }

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     */
    private JBreakStatement findUnconditionalBreak(JStatement statement) {
      if (statement instanceof JBreakStatement) {
        return (JBreakStatement) statement;
      } else if (statement instanceof JBlock) {
        JBlock block = (JBlock) statement;
        List<JStatement> blockStmts = block.getStatements();
        if (blockStmts.size() > 0 && isUnconditionalBreak(blockStmts.get(0))) {
          return (JBreakStatement) blockStmts.get(0);
        }
      }
      return null;

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      }
      return null;
    }


    private boolean hasNoDefaultCase(JSwitchStatement x) {
      JBlock body = x.getBody();
      boolean inDefault = false;
      for (JStatement statement : body.getStatements()) {
        if (statement instanceof JCaseStatement) {
          JCaseStatement caseStmt = (JCaseStatement) statement;
          if (caseStmt.getExpr() == null) {
            inDefault = true;
          }

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    /**
     * Removes any break statements that appear one after another.
     */
    private void removeDoubleBreaks(JSwitchStatement x) {
      JBlock body = x.getBody();
      boolean lastWasBreak = true;
      for (int i = 0; i < body.getStatements().size(); ++i) {
        JStatement statement = body.getStatements().get(i);
        boolean isBreak = isUnconditionalBreak(statement);
        if (isBreak && lastWasBreak) {
          body.removeStmt(i--);
          didChange = true;
        }
        lastWasBreak = isBreak;
      }


      // Remove a trailing break statement from a case block
      if (body.getStatements().size() > 0
          && isUnconditionalUnlabeledBreak(last(body.getStatements()))) {
        body.removeStmt(body.getStatements().size() - 1);
        didChange = true;
      }
    }

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        if (stmt instanceof JBlock) {
          /*
           * Promote a sub-block's children to the current block, unless the
           * sub-block contains local declarations as children.
           */
          JBlock block = (JBlock) stmt;
          if (canPromoteBlock(block)) {
            x.removeStmt(i);
            x.addStmts(i, block.getStatements());
            i--;
            didChange = true;
            continue;
          }
        }

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com.google.gwt.dev.jjs.impl.AssertionRemover$AssertRemoveVisitor

com.google.gwt.dev.jjs.impl.AssertionRemover$AssertVisitor

com.google.gwt.dev.jjs.impl.CatchBlockNormalizer$CollapseCatchBlocks

com.google.gwt.dev.jjs.impl.DeadCodeElimination$DeadCodeVisitor

com.google.gwt.dev.jjs.impl.EnumOrdinalizer$ReplaceEnumTypesWithInteger

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com.google.gwt.dev.jjs.impl.gflow.cfg.CfgBuilder$BuilderVisitor

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