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// Copyright 2023 The Go 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 protocol
// The file defines helpers for semantics tokens.
import "fmt"
// SemanticTypes to use in case there is no client, as in the command line, or tests.
func SemanticTypes() []string {
return semanticTypes[:]
}
// SemanticModifiers to use in case there is no client.
func SemanticModifiers() []string {
return semanticModifiers[:]
}
// SemType returns a string equivalent of the type, for gopls semtok
func SemType(n int) string {
tokTypes := SemanticTypes()
tokMods := SemanticModifiers()
if n >= 0 && n < len(tokTypes) {
return tokTypes[n]
}
// not found for some reason
return fmt.Sprintf("?%d[%d,%d]?", n, len(tokTypes), len(tokMods))
}
// SemMods returns the []string equivalent of the mods, for gopls semtok.
func SemMods(n int) []string {
tokMods := SemanticModifiers()
mods := []string{}
for i := 0; i < len(tokMods); i++ {
if (n & (1 << uint(i))) != 0 {
mods = append(mods, tokMods[i])
}
}
return mods
}
// From https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#textDocument_semanticTokens
var (
semanticTypes = [...]string{
"namespace", "type", "class", "enum", "interface",
"struct", "typeParameter", "parameter", "variable", "property", "enumMember",
"event", "function", "method", "macro", "keyword", "modifier", "comment",
"string", "number", "regexp", "operator",
}
semanticModifiers = [...]string{
"declaration", "definition", "readonly", "static",
"deprecated", "abstract", "async", "modification", "documentation", "defaultLibrary",
// Additional modifiers
"interface", "struct", "signature", "pointer", "array", "map", "slice", "chan", "string", "number", "bool", "invalid",
}
)
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