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zclass.go
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/
zclass.go
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package phpobj
import (
"errors"
"fmt"
"io"
"strings"
"github.com/MagicalTux/goro/core/phpv"
)
type ZClass struct {
Name phpv.ZString
L *phpv.Loc
Type phpv.ZClassType
Attr phpv.ZClassAttr
// string value of extend & implement (used previous to lookup)
ExtendsStr phpv.ZString
ImplementsStr []phpv.ZString
parents map[phpv.ZClass]phpv.ZClass // all parents, extends & implements
Extends *ZClass
Implements []*ZClass
Const map[phpv.ZString]phpv.Val // class constants
Props []*phpv.ZClassProp
Methods map[phpv.ZString]*phpv.ZClassMethod
StaticProps *phpv.ZHashTable
// class specific handlers
H *phpv.ZClassHandlers
}
func (c *ZClass) GetName() phpv.ZString {
return c.Name
}
func (c *ZClass) Run(ctx phpv.Context) (*phpv.ZVal, error) {
err := ctx.Global().RegisterClass(c.Name, c)
if err != nil {
return nil, err
}
return nil, c.Compile(ctx)
}
func (c *ZClass) Compile(ctx phpv.Context) error {
c.parents = make(map[phpv.ZClass]phpv.ZClass)
if c.ExtendsStr != "" {
// need to lookup extend
subc, err := ctx.Global().GetClass(ctx, c.ExtendsStr)
if err != nil {
return err
}
if _, found := c.parents[subc]; found {
return errors.New("class extends loop found")
}
c.Extends = subc.(*ZClass)
c.parents[subc] = subc
// need to import methods
for n, m := range c.Extends.Methods {
if _, gotit := c.Methods[n]; !gotit {
c.Methods[n] = m
}
}
}
for k, v := range c.Const {
if r, ok := v.(*phpv.CompileDelayed); ok {
z, err := r.Run(ctx)
if err != nil {
return err
}
c.Const[k] = z.Value()
}
}
for _, p := range c.Props {
if r, ok := p.Default.(*phpv.CompileDelayed); ok {
z, err := r.Run(ctx)
if err != nil {
return err
}
p.Default = z.Value()
}
}
for _, m := range c.Methods {
if c, ok := m.Method.(phpv.Compilable); ok {
err := c.Compile(ctx)
if err != nil {
return err
}
}
}
// TODO resolve extendstr/implementsstr
return nil
}
func (c *ZClass) InstanceOf(subc phpv.ZClass) bool {
_, r := c.parents[subc]
return r
}
func (c *ZClass) Dump(w io.Writer) error {
_, err := fmt.Fprintf(w, "%sclass %s {", c.Attr, c.Name)
if err != nil {
return err
}
// TODO
_, err = fmt.Fprintf(w, "TODO }")
return err
}
func (c *ZClass) BaseName() phpv.ZString {
// rturn class name without namespaces/etc
pos := strings.LastIndexByte(string(c.Name), '\\')
if pos == -1 {
return c.Name
}
return c.Name[pos+1:]
}
func (c *ZClass) GetStaticProps(ctx phpv.Context) (*phpv.ZHashTable, error) {
if c.StaticProps == nil {
c.StaticProps = phpv.NewHashTable()
for _, p := range c.Props {
if !p.Modifiers.IsStatic() {
continue
}
if p.Default == nil {
c.StaticProps.SetString(p.VarName, phpv.ZNULL.ZVal())
continue
}
c.StaticProps.SetString(p.VarName, p.Default.ZVal())
}
}
return c.StaticProps, nil
}
func (c *ZClass) GetMethod(name phpv.ZString) (*phpv.ZClassMethod, bool) {
r, ok := c.Methods[name]
return r, ok
}
func (c *ZClass) Handlers() *phpv.ZClassHandlers {
return c.H
}
func (c *ZClass) GetParent() phpv.ZClass {
return c.Extends
}