salix/namespace.go

79 lines
1.6 KiB
Go

package salix
import (
"reflect"
"sync"
)
// Namespace represents a collection of templates that can include each other
type Namespace struct {
mu sync.Mutex
tmpls map[string]*Template
vars map[string]reflect.Value
tags map[string]Tag
}
// New returns a new template namespace
func New() *Namespace {
return &Namespace{
tmpls: map[string]*Template{},
vars: map[string]reflect.Value{},
tags: map[string]Tag{},
}
}
// WithVarMap sets the namespace's variable map to m
func (n *Namespace) WithVarMap(m map[string]any) *Namespace {
n.mu.Lock()
defer n.mu.Unlock()
n.vars = map[string]reflect.Value{}
if m != nil {
for k, v := range m {
n.vars[k] = reflect.ValueOf(v)
}
}
return n
}
// WithTagMap sets the namespace's tag map to m
func (n *Namespace) WithTagMap(m map[string]Tag) *Namespace {
n.mu.Lock()
defer n.mu.Unlock()
if m != nil {
n.tags = m
} else {
n.tags = map[string]Tag{}
}
return n
}
// GetTemplate tries to get a template from the namespace's template map.
// If it finds the template, it returns the template and true. If it
// doesn't find it, it returns nil and false.
func (n *Namespace) GetTemplate(name string) (*Template, bool) {
n.mu.Lock()
defer n.mu.Unlock()
t, ok := n.tmpls[name]
return t, ok
}
// getVar tries to get a variable from the namespace's variable map
func (n *Namespace) getVar(name string) (reflect.Value, bool) {
n.mu.Lock()
defer n.mu.Unlock()
v, ok := n.vars[name]
return v, ok
}
// getTag tries to get a tag from the namespace's tag map
func (n *Namespace) getTag(name string) (Tag, bool) {
n.mu.Lock()
defer n.mu.Unlock()
t, ok := n.tags[name]
return t, ok
}