blob: 666d1fc909735cdb6be1090e3e8c22403e81d6d7 (
plain)
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
31
32
33
34
|
package parser
import (
"jinx/pkg/lang/ast"
)
func (p *Parser) mergeIntoBinary(left ast.Expr, op ast.BinOp, right ast.Expr) ast.ExprBinary {
if right.Kind == ast.ExprKindBinary {
rightBin := right.Value.(ast.ExprBinary)
needsSwitch := (op.Precedence() > rightBin.Op.Precedence()) ||
(op.Precedence() == rightBin.Op.Precedence() && op.Associativity() == ast.AssociativityLeft)
if needsSwitch {
leftBin := p.mergeIntoBinary(left, op, rightBin.Left)
left = ast.Expr{
At: left.At,
Kind: ast.ExprKindBinary,
Value: leftBin,
}
right = rightBin.Right
op = rightBin.Op
}
}
return ast.ExprBinary{
Left: left,
Op: op,
Right: right,
}
}
|
