| 1 | // Copyright 2021 The Go Authors. All rights reserved. |
|---|---|
| 2 | // Use of this source code is governed by a BSD-style |
| 3 | // license that can be found in the LICENSE file. |
| 4 | |
| 5 | package generator |
| 6 | |
| 7 | import ( |
| 8 | "bytes" |
| 9 | "fmt" |
| 10 | ) |
| 11 | |
| 12 | // mapparm describes a parameter of map type; it implements the |
| 13 | // "parm" interface. |
| 14 | type mapparm struct { |
| 15 | aname string |
| 16 | qname string |
| 17 | keytype parm |
| 18 | valtype parm |
| 19 | keytmp string |
| 20 | isBlank |
| 21 | addrTakenHow |
| 22 | isGenValFunc |
| 23 | skipCompare |
| 24 | } |
| 25 | |
| 26 | func (p mapparm) IsControl() bool { |
| 27 | return false |
| 28 | } |
| 29 | |
| 30 | func (p mapparm) TypeName() string { |
| 31 | return p.aname |
| 32 | } |
| 33 | |
| 34 | func (p mapparm) QualName() string { |
| 35 | return p.qname |
| 36 | } |
| 37 | |
| 38 | func (p mapparm) Declare(b *bytes.Buffer, prefix string, suffix string, caller bool) { |
| 39 | n := p.aname |
| 40 | if caller { |
| 41 | n = p.qname |
| 42 | } |
| 43 | b.WriteString(fmt.Sprintf("%s %s%s", prefix, n, suffix)) |
| 44 | } |
| 45 | |
| 46 | func (p mapparm) String() string { |
| 47 | return fmt.Sprintf("%s map[%s]%s", p.aname, |
| 48 | p.keytype.String(), p.valtype.String()) |
| 49 | } |
| 50 | |
| 51 | func (p mapparm) GenValue(s *genstate, f *funcdef, value int, caller bool) (string, int) { |
| 52 | var buf bytes.Buffer |
| 53 | |
| 54 | verb(5, "mapparm.GenValue(%d)", value) |
| 55 | |
| 56 | n := p.aname |
| 57 | if caller { |
| 58 | n = p.qname |
| 59 | } |
| 60 | buf.WriteString(fmt.Sprintf("%s{", n)) |
| 61 | buf.WriteString(p.keytmp + ": ") |
| 62 | |
| 63 | var valstr string |
| 64 | valstr, value = s.GenValue(f, p.valtype, value, caller) |
| 65 | buf.WriteString(valstr + "}") |
| 66 | return buf.String(), value |
| 67 | } |
| 68 | |
| 69 | func (p mapparm) GenElemRef(elidx int, path string) (string, parm) { |
| 70 | vne := p.valtype.NumElements() |
| 71 | verb(4, "begin GenElemRef(%d,%s) on %s %d", elidx, path, p.String(), vne) |
| 72 | |
| 73 | ppath := fmt.Sprintf("%s[mkt.%s]", path, p.keytmp) |
| 74 | |
| 75 | // otherwise dig into the value |
| 76 | verb(4, "recur GenElemRef(%d,...)", elidx) |
| 77 | |
| 78 | // Otherwise our victim is somewhere inside the value |
| 79 | if p.IsBlank() { |
| 80 | ppath = "_" |
| 81 | } |
| 82 | return p.valtype.GenElemRef(elidx, ppath) |
| 83 | } |
| 84 | |
| 85 | func (p mapparm) NumElements() int { |
| 86 | return p.valtype.NumElements() |
| 87 | } |
| 88 | |
| 89 | func (p mapparm) HasPointer() bool { |
| 90 | return true |
| 91 | } |
| 92 |
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