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113 lines
2.3 KiB
Go
113 lines
2.3 KiB
Go
package ent
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import (
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"fmt"
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"strconv"
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"strings"
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)
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const (
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t_element = iota // a known element class
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t_object // c++ object type that is not a known element class
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t_array // c++ array type
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t_template // c++ template type
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)
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// constant identifiers
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var cIdents = map[string]int{"MAX_ABILITY_DRAFT_ABILITIES": 48}
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type typeSpec struct {
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name string
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kind int
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size int
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template string
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member *typeSpec
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}
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func (t typeSpec) String() string {
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if t.member != nil {
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return fmt.Sprintf("{%v %v %v %v %v}", t.name, t.kind, t.size, t.template, *t.member)
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}
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return fmt.Sprintf("{%v %v %v %v %v}", t.name, t.kind, t.size, t.template, t.member)
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}
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func parseTypeName(n *Namespace, s string) typeSpec {
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s = strings.TrimSpace(s)
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t := typeSpec{name: s}
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if n.HasClass(s) {
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t.kind = t_element
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return t
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}
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// presumably this is some sort of array type
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if strings.ContainsRune(s, '[') {
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memName, count := parseArrayName(s)
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t.kind = t_array
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t.size = count
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t.member = new(typeSpec)
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*t.member = parseTypeName(n, memName)
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return t
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}
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if strings.ContainsRune(s, '<') {
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t.kind = t_template
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template, member := parseTemplateName(s)
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t.template = template
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t.member = new(typeSpec)
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*t.member = parseTypeName(n, member)
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return t
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}
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t.kind = t_object
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return t
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}
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func parseArrayName(s string) (string, int) {
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runes := []rune(s)
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if runes[len(runes)-1] != ']' {
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panic("invalid array type name: " + s)
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}
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for i := len(runes) - 2; i >= 0; i-- {
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if runes[i] == '[' {
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ns := strings.TrimSpace(string(runes[i+1 : len(runes)-1]))
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n, err := strconv.Atoi(ns)
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if err != nil {
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n = cIdents[ns]
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if n == 0 {
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panic("invalid array type name: " + err.Error())
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}
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}
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return strings.TrimSpace(string(runes[:i])), n
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}
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}
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panic("invalid array type name: " + s)
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}
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func parseTemplateName(s string) (string, string) {
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if strings.ContainsRune(s, ',') {
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panic("can't handle templates with multiple parameters")
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}
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runes := []rune(s)
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template := ""
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depth := 0
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bracket_start := -1
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for i, r := range runes {
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if r == '<' {
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if depth == 0 {
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bracket_start = i
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template = strings.TrimSpace(string(runes[:i]))
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}
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depth++
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}
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if r == '>' {
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depth--
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if depth == 0 {
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return template, strings.TrimSpace(string(runes[bracket_start+1 : i]))
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}
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}
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}
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panic("invalid template type definition: " + s)
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}
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