private void parseIf(IfContext context, IfStatement ifStatement) throws IfStatementError { ifStatement.acceptCondition(parseCondition(context)); if (context.isEOF()) { throw new IfStatementError( Messages.TclIfProcessor_missingThenBlock, context.start(), context.end()); } if (checkKeyword(context, THEN)) { if (context.isEOF()) { throw new IfStatementError( Messages.TclIfProcessor_missingThenBlock, context.start(), context.end()); } } ifStatement.acceptThen(parseBranch(context, true, Messages.TclIfProcessor_incorrectThenBlock)); if (!context.isEOF()) { if (checkKeyword(context, ELSEIF)) { final ASTNode elseIfKeyword = context.get(context.index - 1); final IfStatement nestedIf = new IfStatement(elseIfKeyword.sourceStart(), context.end()); parseIf(context, nestedIf); ifStatement.acceptElse(nestedIf); } else { if (checkKeyword(context, ELSE)) { if (context.isEOF()) { throw new IfStatementError( Messages.TclIfProcessor_incorrectElse, context.start(), context.end()); } } ifStatement.acceptElse( parseBranch(context, false, Messages.TclIfProcessor_incorrectElseBlock)); } } }
private ASTNode parseCondition(IfContext context) throws IfStatementError { if (context.isEOF()) { throw new IfStatementError( Messages.TclIfProcessor_missingCondition, context.start(), context.end()); } ASTNode node = context.get(); if (node instanceof TclBlockExpression) { TclBlockExpression bl = (TclBlockExpression) node; List parseBlock = bl.parseBlockSimple(false); ASTListNode list = new ASTListNode(bl.sourceStart() + 1, bl.sourceEnd() - 1); for (int j = 0; j < parseBlock.size(); j++) { Object st = parseBlock.get(j); if (st instanceof TclStatement) { List expressions = ((TclStatement) st).getExpressions(); for (int k = 0; k < expressions.size(); k++) { ASTNode expr = (ASTNode) expressions.get(k); list.addNode(expr); } } } return list; } else if (node instanceof SimpleReference) { return node; } else if (node instanceof TclAdvancedExecuteExpression) { TclAdvancedExecuteExpression ex = (TclAdvancedExecuteExpression) node; List childs = ex.getChilds(); return new ASTListNode(node.sourceStart(), node.sourceEnd(), childs); } else if (node instanceof TclExecuteExpression) { return node; } else if (node instanceof Block) { return node; } throw new IfStatementError(Messages.TclIfProcessor_incorrectCondition, node); }
private Statement parseBranch(IfContext context, boolean wrapAsBlock, String message) throws IfStatementError { final ASTNode node = context.get(); if (node instanceof TclBlockExpression) { final Block block = new Block(node.sourceStart(), node.sourceEnd()); parseBlock(context.parser, block, (TclBlockExpression) node); return block; } else if (node instanceof SimpleReference) { final Block block = new Block(node.sourceStart(), node.sourceEnd()); block.addStatement(node); return block; } else if (node instanceof TclStatement) { if (wrapAsBlock) { final Block block = new Block(node.sourceStart(), node.sourceEnd()); block.addStatement(node); return block; } else { return (TclStatement) node; } } else if (node instanceof TclExecuteExpression) { if (wrapAsBlock) { final Block block = new Block(node.sourceStart(), node.sourceEnd()); block.addStatement(node); return block; } else { return (TclExecuteExpression) node; } } else if (node instanceof Block) { return (Block) node; } else { throw new IfStatementError(message, context.start(), context.end()); } }
public ASTNode process(TclStatement statement, ITclParser parser, ASTNode parent) { final IfContext context = new IfContext(parser, statement); IfStatement ifStatement = new IfStatement(context.start(), context.end()); addToParent(parent, ifStatement); try { parseIf(context, ifStatement); if (!context.isEOF()) { final ASTNode extraBegin = context.get(context.index); final ASTNode extraEnd = context.get(context.size() - 1); report( parser, Messages.TclIfProcessor_unexpectedStatements, extraBegin.sourceStart(), extraEnd.sourceEnd(), ProblemSeverities.Error); } } catch (IfStatementError e) { // if (DLTKCore.DEBUG) { // e.printStackTrace(); // } report(parser, e.getMessage(), e.start, e.end, ProblemSeverities.Error); } return ifStatement; }