Examples with PrimitiveCastExpr kalang.ast.PrimitiveCastExpr used on opensource projects

Example 1 with PrimitiveCastExpr

use of kalang.ast.PrimitiveCastExpr in project kalang by kasonyang.

the class AstBuilder method visitCastExpr.

@Override
public AstNode visitCastExpr(CastExprContext ctx) {
    ExprNode castExpr;
    ExprNode expr = visitExpression(ctx.expression());
    Type toType = parseType(ctx.type());
    Type fromType = expr.getType();
    if (fromType instanceof PrimitiveType) {
        if (toType instanceof PrimitiveType) {
            castExpr = new PrimitiveCastExpr((PrimitiveType) fromType, (PrimitiveType) toType, expr);
        } else {
            this.handleSyntaxError("unable to cast primitive type to class type", ctx);
            return null;
        }
    } else {
        if (toType instanceof PrimitiveType) {
            this.handleSyntaxError("unable to cast class type to primitive type", ctx);
            return null;
        } else {
            castExpr = new CastExpr(toType, expr);
        }
    }
    mapAst(castExpr, ctx);
    return castExpr;
}