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// Copyright 2020 The CCGO 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 ccgo // import "modernc.org/ccgo/v3/lib"
import (
"fmt"
"math"
"math/big"
"modernc.org/cc/v3"
)
var (
reservedNames = map[string]bool{
"bool": false, // ccgo can use
"break": true, // keyword
"case": true, // keyword
"chan": true, // keyword
"const": true, // keyword
"continue": true, // keyword
"default": true, // keyword
"defer": true, // keyword
"else": true, // keyword
"fallthrough": true, // keyword
"false": false, // ccgo can use
"float32": false, // ccgo can use
"float64": false, // ccgo can use
"for": true, // keyword
"func": true, // keyword
"go": true, // keyword
"goto": true, // keyword
"if": true, // keyword
"import": true, // keyword
"init": false, // special name
"int16": false, // ccgo can use
"int32": false, // ccgo can use
"int64": false, // ccgo can use
"int8": false, // ccgo can use
"interface": true, // keyword
"map": true, // keyword
"math": false, // package name
"nil": false, // ccgo can use
"package": true, // keyword
"range": true, // keyword
"return": true, // keyword
"select": true, // keyword
"struct": true, // keyword
"switch": true, // keyword
"true": false, // ccgo can use
"type": true, // keyword
"types": false, // package name
"uint16": false, // ccgo can use
"uint32": false, // ccgo can use
"uint64": false, // ccgo can use
"uint8": false, // ccgo can use
"uintptr": false, // ccgo can use
"unsafe": false, // package name
"var": true, // keyword
}
reservedIds []cc.StringID
maxInt32 = big.NewInt(math.MaxInt32)
maxInt64 = big.NewInt(math.MaxInt64)
maxUint32 = big.NewInt(math.MaxUint32)
maxUint64 = big.NewInt(0).SetUint64(math.MaxUint64)
minInt32 = big.NewInt(math.MinInt32)
minInt64 = big.NewInt(math.MinInt64)
)
func init() {
for k := range reservedNames {
reservedIds = append(reservedIds, cc.String(k))
}
}
type scope map[cc.StringID]int32
func newScope() scope {
s := scope{}
for _, k := range reservedIds {
s[k] = 0
}
return s
}
func (s scope) take(t cc.StringID) string {
if t == 0 {
panic(todo("internal error"))
}
n, ok := s[t]
if !ok {
s[t] = 0
return t.String()
}
for {
n++
s[t] = n
r := fmt.Sprintf("%s%d", t, n)
id := cc.String(r)
if _, ok := s[id]; !ok {
s[id] = 0
return r
}
}
}
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