}

func TestExpr(t *testing.T) {
	p := NewParser(nil, nil, nil) // Expression evaluation uses none of these fields of the parser.
	for i, test := range exprTests {
		p.start(lex.Tokenize(test.input))
		result := int64(p.expr())
		if result != test.output {
			t.Errorf("%d: %q evaluated to %d; expected %d", i, test.input, result, test.output)
		}
		tok := p.next()
		if test.atEOF && tok.ScanToken != scanner.EOF {

	wrapInParentheses := false

	for idx, expr := range exprs {
		if idx > 0 {
			if v, ok := expr.(OrConditions); ok && len(v.Exprs) == 1 {
				builder.WriteString(OrWithSpace)
			} else {
				builder.WriteString(joinCond)
			}
		}

		if len(exprs) > 1 {
			switch v := expr.(type) {
			case OrConditions:
				if len(v.Exprs) == 1 {
					if e, ok := v.Exprs[0].(Expr); ok {
						sql := strings.ToUpper(e.SQL)

                && value.getClass().getName().startsWith("java.lang."));
    }

    private String stripTokens(String expr) {
        if (expr.startsWith("${") && (expr.indexOf('}') == expr.length() - 1)) {
            expr = expr.substring(2, expr.length() - 1);
        }
        return expr;
    }

    @Override
    public File alignToBaseDirectory(File file) {

                && value.getClass().getName().startsWith("java.lang."));
    }

    private String stripTokens(String expr) {
        if (expr.startsWith("${") && (expr.indexOf('}') == expr.length() - 1)) {
            expr = expr.substring(2, expr.length() - 1);
        }
        return expr;
    }

    @Override
    public File alignToBaseDirectory(File file) {

package gradlebuild.codenarc.rules

import org.codehaus.groovy.ast.ClassNode
import org.codehaus.groovy.ast.MethodNode
import org.codehaus.groovy.ast.expr.Expression
import org.codehaus.groovy.ast.expr.MethodCallExpression
import org.codehaus.groovy.ast.expr.PropertyExpression
import org.codehaus.groovy.ast.expr.VariableExpression
import org.codenarc.rule.AbstractAstVisitor
import org.codenarc.rule.AbstractAstVisitorRule
import org.codenarc.util.AstUtil

	NegationBuild(builder Builder)
}

// Expr raw expression
type Expr struct {
	SQL                string
	Vars               []interface{}
	WithoutParentheses bool
}

// Build build raw expression
func (expr Expr) Build(builder Builder) {
	var (
		afterParenthesis bool
		idx              int
	)

	for _, v := range []byte(expr.SQL) {
		if v == '?' && len(expr.Vars) > idx {

          },
          "expr": "go_memstats_heap_alloc_bytes{app=\"istiod\"}",
          "format": "time_series",
          "hide": true,
          "intervalFactor": 2,
          "legendFormat": "heap alloc",
          "refId": "D"
        },
        {
          "datasource": {
            "type": "prometheus",
            "uid": "${datasource}"
          },

              "expr": "go_memstats_stack_inuse_bytes{app=\"istiod\"}",
              "format": "time_series",
              "intervalFactor": 2,
              "legendFormat": "Stack in-use",
              "refId": "G",
              "step": 2
            },
            {
              "datasource": {
                "type": "prometheus",
                "uid": "${datasource}"
              },

		SQL    string
		Result string
		Vars   []interface{}
	}{{
		SQL:    "create table ? (? ?, ? ?)",
		Vars:   []interface{}{clause.Table{Name: "users"}, clause.Column{Name: "id"}, clause.Expr{SQL: "int"}, clause.Column{Name: "name"}, clause.Expr{SQL: "text"}},
		Result: "create table `users` (`id` int, `name` text)",
	}}

	for idx, result := range results {
		t.Run(fmt.Sprintf("case #%v", idx), func(t *testing.T) {

		}
	} else {
		builder.WriteByte('*')
	}
}

func (s Select) MergeClause(clause *Clause) {
	if s.Expression != nil {
		if s.Distinct {
			if expr, ok := s.Expression.(Expr); ok {
				expr.SQL = "DISTINCT " + expr.SQL
				clause.Expression = expr
				return
			}
		}

		clause.Expression = s.Expression
	} else {
		clause.Expression = s
	}
}