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// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package generator
import (
"bytes"
"fmt"
)
// mapparm describes a parameter of map type; it implements the
// "parm" interface.
type mapparm struct {
aname string
qname string
keytype parm
valtype parm
keytmp string
isBlank
addrTakenHow
isGenValFunc
skipCompare
}
func (p mapparm) IsControl() bool {
return false
}
func (p mapparm) TypeName() string {
return p.aname
}
func (p mapparm) QualName() string {
return p.qname
}
func (p mapparm) Declare(b *bytes.Buffer, prefix string, suffix string, caller bool) {
n := p.aname
if caller {
n = p.qname
}
b.WriteString(fmt.Sprintf("%s %s%s", prefix, n, suffix))
}
func (p mapparm) String() string {
return fmt.Sprintf("%s map[%s]%s", p.aname,
p.keytype.String(), p.valtype.String())
}
func (p mapparm) GenValue(s *genstate, f *funcdef, value int, caller bool) (string, int) {
var buf bytes.Buffer
verb(5, "mapparm.GenValue(%d)", value)
n := p.aname
if caller {
n = p.qname
}
buf.WriteString(fmt.Sprintf("%s{", n))
buf.WriteString(p.keytmp + ": ")
var valstr string
valstr, value = s.GenValue(f, p.valtype, value, caller)
buf.WriteString(valstr + "}")
return buf.String(), value
}
func (p mapparm) GenElemRef(elidx int, path string) (string, parm) {
vne := p.valtype.NumElements()
verb(4, "begin GenElemRef(%d,%s) on %s %d", elidx, path, p.String(), vne)
ppath := fmt.Sprintf("%s[mkt.%s]", path, p.keytmp)
// otherwise dig into the value
verb(4, "recur GenElemRef(%d,...)", elidx)
// Otherwise our victim is somewhere inside the value
if p.IsBlank() {
ppath = "_"
}
return p.valtype.GenElemRef(elidx, ppath)
}
func (p mapparm) NumElements() int {
return p.valtype.NumElements()
}
func (p mapparm) HasPointer() bool {
return true
}
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