Examples with VarDefineNode org.beetl.core.statement.VarDefineNode used on opensource projects

Example 1 with VarDefineNode

use of org.beetl.core.statement.VarDefineNode in project beetl2.0 by javamonkey.

the class AntlrProgramBuilder method parseForSt.

protected Statement parseForSt(ForStContext ctx) {
    pbCtx.enterBlock();
    // break，continue语句到此为止
    pbCtx.current.canStopContinueBreakFlag = true;
    StatementContext forContext = ctx.statement(0);
    StatementContext elseContext = null;
    ForControlContext forTypeCtx = ctx.forControl();
    if (forTypeCtx.forInControl() != null) {
        // for(a in list)...
        ForInControlContext forCtx = forTypeCtx.forInControl();
        VarDefineNode forVar = new VarDefineNode(this.getBTToken(forCtx.Identifier().getSymbol()));
        if (pbCtx.hasDefined(forVar.token.text) != null) {
            GrammarToken token = pbCtx.hasDefined(forVar.token.text);
            BeetlException ex = new BeetlException(BeetlException.VAR_ALREADY_DEFINED, "已经在第" + token.line + "行定义");
            ex.pushToken(forVar.token);
            throw ex;
        }
        VarDefineNode loopStatusVar = new VarDefineNode(new org.beetl.core.statement.GrammarToken(forCtx.Identifier().getSymbol().getText() + "LP", forCtx.Identifier().getSymbol().getLine(), 0));
        if (pbCtx.hasDefined(loopStatusVar.token.text) != null) {
            GrammarToken token = pbCtx.hasDefined(loopStatusVar.token.text);
            BeetlException ex = new BeetlException(BeetlException.VAR_ALREADY_DEFINED, "For循环隐含变量，已经在第" + token.line + "行定义");
            ex.pushToken(loopStatusVar.token);
            throw ex;
        }
        pbCtx.addVarAndPostion(forVar);
        pbCtx.addVarAndPostion(loopStatusVar);
        // //beetl.2 兼容
        // VarDefineNode indexVar = new VarDefineNode(new org.beetl.core.statement.GrammarToken(forCtx.Identifier()
        // .getSymbol().getText()
        // + "_index", forCtx.Identifier().getSymbol().getLine(), 0));
        // 
        // VarDefineNode sizeVar = new VarDefineNode(new org.beetl.core.statement.GrammarToken(forCtx.Identifier()
        // .getSymbol().getText()
        // + "_size", forCtx.Identifier().getSymbol().getLine(), 0));
        // 
        // pbCtx.addVarAndPostion(indexVar);
        // 
        // pbCtx.addVarAndPostion(sizeVar);
        Expression exp = this.parseExpress(forCtx.expression());
        Statement forPart = this.parseStatment(forContext);
        // elsefor
        Statement elseForPart = null;
        if (ctx.Elsefor() != null) {
            elseContext = ctx.statement(1);
            elseForPart = this.parseStatment(elseContext);
        }
        boolean hasSafe = false;
        if (exp instanceof VarRef) {
            VarRef varRef = (VarRef) exp;
            hasSafe = varRef.hasSafe;
        }
        if (pbCtx.isSafeOutput) {
            hasSafe = true;
        }
        ForStatement forStatement = new ForStatement(forVar, exp, hasSafe, forPart, elseForPart, forVar.token);
        this.checkGoto(forStatement);
        pbCtx.exitBlock();
        return forStatement;
    } else {
        GeneralForControlContext forCtx = forTypeCtx.generalForControl();
        Expression[] initExp = null;
        VarAssignStatementSeq varInitSeq = null;
        Expression condtion = null;
        Expression[] updateExp = null;
        if (forCtx.forInit() != null) {
            ForInitContext forInitCtx = forCtx.forInit();
            if (forInitCtx.Var() == null) {
                // for( a=1,b=3;
                List<ExpressionContext> list = forInitCtx.expressionList().expression();
                initExp = this.parseExpressionCtxList(list);
            } else {
                // for( var a=1,b=3;
                VarDeclareListContext varDeclare = forInitCtx.varDeclareList();
                varInitSeq = this.parseVarDeclareList(varDeclare);
            }
        }
        if (forCtx.expression() != null) {
            condtion = this.parseExpress(forCtx.expression());
        }
        if (forCtx.forUpdate() != null) {
            ForUpdateContext updateCtx = forCtx.forUpdate();
            List<ExpressionContext> list = updateCtx.expressionList().expression();
            updateExp = this.parseExpressionCtxList(list);
        }
        Statement forPart = this.parseStatment(forContext);
        // elsefor
        Statement elseForPart = null;
        if (ctx.Elsefor() != null) {
            elseContext = ctx.statement(1);
            elseForPart = this.parseStatment(elseContext);
        }
        String str = forTypeCtx.getText();
        GeneralForStatement forStat = new GeneralForStatement(varInitSeq, initExp, condtion, updateExp, forPart, elseForPart, this.getBTToken(str, forTypeCtx.start.getLine()));
        pbCtx.exitBlock();
        return forStat;
    }
}

Example 2 with VarDefineNode

use of org.beetl.core.statement.VarDefineNode in project beetl2.0 by javamonkey.

the class AntlrProgramBuilder method parseTryCatch.

protected TryCatchStatement parseTryCatch(TryStContext tryStCtx) {
    BlockContext tryBlockCtx = tryStCtx.block(0);
    BlockStatement tryPart = (BlockStatement) this.parseBlock(tryBlockCtx.statement(), tryBlockCtx);
    BlockStatement catchPart = null;
    VarDefineNode errorNode = null;
    if (tryStCtx.Catch() != null) {
        this.pbCtx.enterBlock();
        if (tryStCtx.Identifier() != null) {
            Token errorToken = tryStCtx.Identifier().getSymbol();
            errorNode = new VarDefineNode(this.getBTToken(errorToken));
            this.pbCtx.addVarAndPostion(errorNode);
        }
        BlockContext catchBlockCtx = tryStCtx.block(1);
        catchPart = (BlockStatement) this.parseBlock(catchBlockCtx.statement(), catchBlockCtx);
        this.pbCtx.exitBlock();
    }
    TryCatchStatement statement = new TryCatchStatement(tryPart, catchPart, errorNode, this.getBTToken(tryStCtx.Try().getSymbol()));
    return statement;
}

Example 3 with VarDefineNode

use of org.beetl.core.statement.VarDefineNode in project beetl2.0 by javamonkey.

the class AntlrProgramBuilder method parseTag.

protected TagStatement parseTag(FunctionTagCallContext fc) {
    String id = this.getID(fc.functionNs().Identifier());
    ExpressionListContext expListCtx = fc.expressionList();
    List<ExpressionContext> list = null;
    if (expListCtx != null) {
        list = fc.expressionList().expression();
    } else {
        list = Collections.EMPTY_LIST;
    }
    Expression[] expList = this.parseExpressionCtxList(list);
    if (id.equals("htmltagvar")) {
        int line = fc.functionNs().getStart().getLine();
        // 标签具有绑定变量功能
        Literal l = (Literal) expList[2];
        String varList = (String) l.obj;
        String[] vars = varList.split(",");
        // 定义的变量仅仅在标签体内可见
        this.pbCtx.enterBlock();
        VarDefineNode[] varDefine = new VarDefineNode[vars.length];
        for (int i = 0; i < vars.length; i++) {
            VarDefineNode varNode = new VarDefineNode(this.getBTToken(vars[i].trim(), line));
            this.pbCtx.addVarAndPostion(varNode);
            varDefine[i] = varNode;
        }
        BlockContext blockCtx = fc.block();
        Statement block = parseBlock(blockCtx.statement(), blockCtx);
        this.pbCtx.exitBlock();
        TagFactory tf = this.gt.getTagFactory(id);
        if (tf == null) {
            BeetlException ex = new BeetlException(BeetlException.TAG_NOT_FOUND);
            ex.pushToken(this.getBTToken(id, fc.functionNs().getStart().getLine()));
            throw ex;
        }
        TagStatement tag = new TagVarBindingStatement(id, expList, block, varDefine, this.getBTToken(id, line));
        return tag;
    } else {
        BlockContext blockCtx = fc.block();
        Statement block = parseBlock(blockCtx.statement(), blockCtx);
        TagFactory tf = this.gt.getTagFactory(id);
        if (tf == null) {
            BeetlException ex = new BeetlException(BeetlException.TAG_NOT_FOUND);
            ex.pushToken(this.getBTToken(id, fc.functionNs().getStart().getLine()));
            throw ex;
        }
        TagStatement tag = new TagStatement(id, expList, block, this.getBTToken(id, fc.functionNs().getStart().getLine()));
        return tag;
    }
}