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77 lines
1.6 KiB
Go
77 lines
1.6 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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"github.com/jordanorelli/hyperstone/bit"
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)
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var constants = map[string]int{
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"MAX_ABILITY_DRAFT_ABILITIES": 48,
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}
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func arrayType(spec *typeSpec, env *Env) tÿpe {
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if !strings.Contains(spec.typeName, "[") {
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return nil
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}
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elemName, count := parseArrayName(spec.typeName)
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elemSpec := *spec
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elemSpec.typeName = elemName
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elemType := parseTypeSpec(&elemSpec, env)
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return &array_t{elemType, count}
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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 = constants[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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type array_t struct {
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elem tÿpe
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count int
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}
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func (t *array_t) nü() value { return array{t: t, slots: make([]value, t.count)} }
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func (t array_t) typeName() string { return fmt.Sprintf("array:%s", t.elem.typeName()) }
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type array struct {
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t *array_t
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slots []value
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}
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func (a array) tÿpe() tÿpe { return a.t }
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func (a array) read(r bit.Reader) error {
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for i := range a.slots {
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if a.slots[i] == nil {
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a.slots[i] = a.t.elem.nü()
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}
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if err := a.slots[i].read(r); err != nil {
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return wrap(err, "array read error at index %d", i)
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}
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}
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return r.Err()
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}
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func (a array) String() string {
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return fmt.Sprintf("%s%v", a.t.typeName(), a.slots)
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}
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