vendor/github.com/d5/tengo/compiler/compiler_logical.go


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

package compiler

import (
	"github.com/d5/tengo/compiler/ast"
	"github.com/d5/tengo/compiler/token"
)

func (c *Compiler) compileLogical(node *ast.BinaryExpr) error {
	// left side term
	if err := c.Compile(node.LHS); err != nil {
		return err
	}

	// jump position
	var jumpPos int
	if node.Token == token.LAnd {
		jumpPos = c.emit(node, OpAndJump, 0)
	} else {
		jumpPos = c.emit(node, OpOrJump, 0)
	}

	// right side term
	if err := c.Compile(node.RHS); err != nil {
		return err
	}

	c.changeOperand(jumpPos, len(c.currentInstructions()))

	return nil
}