// Copyright 2020 The Ebiten Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package shader

import (
	"go/ast"
	"go/token"
)

type block struct {
	types  []typ
	vars   []variable
	consts []constant
	funcs  []function
	stmts  []stmt
	pos    token.Pos
	outer  *block
}

type stmtType int

const (
	stmtNone stmtType = iota
	stmtAssign
	stmtBlock
	stmtReturn
)

type stmt struct {
	stmtType stmtType
	exprs    []ast.Expr
	block    *block
}