internal/shader: unexpected syntax error with a switch statement and an & operator

[hajimehoshi]

Ebitengine Version

74f812d

Operating System

• Windows
• macOS
• Linux
• FreeBSD
• OpenBSD
• Android
• iOS
• Nintendo Switch
• PlayStation 5
• Xbox
• Web Browsers

Go Version (go version)

go version go1.23.1 darwin/arm64

What steps will reproduce the problem?

Run this test in the ebiten package:

func TestShaderCompile(t *testing.T) {
	if _, err := ebiten.NewShader([]byte(`//kage:unit pixels

package main

func Fragment(dstPos vec4, srcPos vec2, color vec4) vec4 {
	x := 0
	switch x & 1 {
	default:
	}
	return vec4(0)
}
`)); err != nil {
		t.Fatal(err)
	}
}

What is the expected result?

The test passes

What happens instead?

The test fails

shader_test.go:2835: 7:2: unexpected statement: &ast.SwitchStmt{Switch:103, Init:ast.Stmt(nil), Tag:(*ast.BinaryExpr)(0x140003abdd0), Body:(*ast.BlockStmt)(0x140003abe00)}

Anything else you feel useful to add?

No response

[hajimehoshi]

Simply, switch statement is not supported yet.