hphp/hack/src/parser/editable_positioned_token.rs

   1 // Copyright (c) Facebook, Inc. and its affiliates.
   2 //
   3 // This source code is licensed under the MIT license found in the
   4 // LICENSE file in the "hack" directory of this source tree.
   5
   6 use parser_rust as parser;
   7
   8 use parser::lexable_token::LexableToken;
   9 use parser::positioned_token::PositionedToken;
  10 use parser::source_text::SourceText;
  11 use parser::token_kind::TokenKind;
  12 use parser_rust::positioned_trivia::PositionedTrivia;
  13
  14 use crate::editable_positioned_original_source_data::SourceData;
  15
  16 #[derive(Clone)]
  17 pub struct SyntheticTokenData {
  18     pub text: String,
  19 }
  20
  21 #[derive(Clone)]
  22 pub enum TokenData<'a> {
  23     Original(SourceData<'a>),
  24     SynthesizedFromOriginal(SyntheticTokenData, SourceData<'a>),
  25     Synthetic(SyntheticTokenData),
  26 }
  27
  28 #[derive(Clone)]
  29 pub struct EditablePositionedToken<'a> {
  30     pub kind: TokenKind,
  31     pub leading_text: String,
  32     pub trailing_text: String,
  33     pub token_data: TokenData<'a>,
  34 }
  35
  36 impl<'a> LexableToken<'a> for EditablePositionedToken<'a> {
  37     type Trivia = PositionedTrivia;
  38
  39     fn make(
  40         _kind: TokenKind,
  41         _source_text: &SourceText,
  42         _offset: usize,
  43         _width: usize,
  44         _leading: Vec<Self::Trivia>,
  45         _trailing: Vec<Self::Trivia>,
  46     ) -> Self {
  47         panic!("TODO")
  48     }
  49
  50     fn kind(&self) -> TokenKind {
  51         self.kind
  52     }
  53
  54     fn leading_start_offset(&self) -> Option<usize> {
  55         panic!("TODO")
  56     }
  57
  58     fn width(&self) -> usize {
  59         panic!("TODO")
  60     }
  61
  62     fn leading_width(&self) -> usize {
  63         panic!("TODO")
  64     }
  65
  66     fn trailing_width(&self) -> usize {
  67         panic!("TODO")
  68     }
  69
  70     fn full_width(&self) -> usize {
  71         panic!("TODO")
  72     }
  73
  74     fn leading(&self) -> &[Self::Trivia] {
  75         panic!("TODO")
  76     }
  77
  78     fn trailing(&self) -> &[Self::Trivia] {
  79         panic!("TODO")
  80     }
  81
  82     fn with_leading(self, _leading: Vec<Self::Trivia>) -> Self {
  83         panic!("TODO")
  84     }
  85
  86     fn with_trailing(self, _trailing: Vec<Self::Trivia>) -> Self {
  87         panic!("TODO")
  88     }
  89
  90     fn with_kind(self, _kind: TokenKind) -> Self {
  91         panic!("TODO")
  92     }
  93 }
  94
  95 impl<'a> EditablePositionedToken<'a> {
  96     pub fn from_positioned_token(
  97         positioned_token: &PositionedToken,
  98         source_text: &SourceText<'a>,
  99     ) -> Self {
 100         let leading_text =
 101             String::from_utf8(positioned_token.leading_text(source_text).to_vec()).unwrap();
 102         let trailing_text =
 103             String::from_utf8(positioned_token.trailing_text(source_text).to_vec()).unwrap();
 104         Self {
 105             kind: positioned_token.kind(),
 106             leading_text,
 107             trailing_text,
 108             token_data: TokenData::Original(SourceData::from_positioned_token(
 109                 positioned_token,
 110                 source_text,
 111             )),
 112         }
 113     }
 114 }