mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-14 23:17:27 +01:00
134 lines
2.7 KiB
Go
134 lines
2.7 KiB
Go
// Copyright 2020 The Ebiten Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package shader
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import (
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"fmt"
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"go/token"
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"strings"
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)
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type block struct {
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vars []variable
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consts []constant
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funcs []function
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stmts []stmt
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pos token.Pos
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}
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func (b *block) dump(indent int) []string {
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idt := strings.Repeat("\t", indent)
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var lines []string
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for _, v := range b.vars {
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init := ""
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if v.init != "" {
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init = " = " + v.init
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}
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lines = append(lines, fmt.Sprintf("%svar %s %s%s", idt, v.name, v.typ, init))
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}
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for _, c := range b.consts {
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lines = append(lines, fmt.Sprintf("%sconst %s %s = %s", idt, c.name, c.typ, c.init))
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}
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for _, f := range b.funcs {
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var args []string
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for _, a := range f.args {
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args = append(args, fmt.Sprintf("%s %s", a.name, a.typ))
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}
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var rets []string
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for _, r := range f.rets {
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name := r.name
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if name == "" {
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name = "_"
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}
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rets = append(rets, fmt.Sprintf("%s %s", name, r.typ))
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}
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l := fmt.Sprintf("func %s(%s)", f.name, strings.Join(args, ", "))
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if len(rets) > 0 {
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l += " (" + strings.Join(rets, ", ") + ")"
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}
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l += " {"
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lines = append(lines, l)
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lines = append(lines, f.body.dump(indent+1)...)
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lines = append(lines, "}")
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}
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for _, s := range b.stmts {
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lines = append(lines, s.dump(indent)...)
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}
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return lines
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}
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type stmtType int
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const (
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stmtNone stmtType = iota
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stmtReturn
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)
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type stmt struct {
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stmtType stmtType
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exprs []expr
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}
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func (s *stmt) dump(indent int) []string {
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idt := strings.Repeat("\t", indent)
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var lines []string
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switch s.stmtType {
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case stmtNone:
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lines = append(lines, "%s(none)", idt)
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case stmtReturn:
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var expr string
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if len(s.exprs) > 0 {
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var strs []string
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for _, e := range s.exprs {
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strs = append(strs, e.dump())
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}
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expr = " " + strings.Join(strs, ", ")
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}
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lines = append(lines, fmt.Sprintf("%sreturn%s", idt, expr))
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default:
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lines = append(lines, fmt.Sprintf("%s(unknown stmt: %d)", idt, s.stmtType))
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}
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return lines
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}
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type exprType int
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const (
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exprNone exprType = iota
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exprIdent
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)
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type expr struct {
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exprType exprType
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value string
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}
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func (e *expr) dump() string {
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switch e.exprType {
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case exprNone:
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return "(none)"
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case exprIdent:
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return e.value
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default:
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return fmt.Sprintf("(unkown expr: %d)", e.exprType)
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}
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}
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