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introduce named constants for highlighting tag names.

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This commit is contained in:
Omer Ben-Amram 2019-12-15 12:33:14 +02:00
parent 3e8f9eb6c4
commit 50ecb1e19b
1 changed files with 67 additions and 37 deletions
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104
crates/ra_ide/src/syntax_highlighting.rs
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@ -16,6 +16,32 @@ use crate::{
FileId,
};
const HIGHLIGHT_TAG_FIELD: &'static str = "field";
const HIGHLIGHT_TAG_FUNCTION: &'static str = "function";
const HIGHLIGHT_TAG_MODULE: &'static str = "module";
const HIGHLIGHT_TAG_TYPE: &'static str = "type";
const HIGHLIGHT_TAG_CONSTANT: &'static str = "constant";
const HIGHLIGHT_TAG_MACRO: &'static str = "macro";
const HIGHLIGHT_TAG_VARIABLE: &'static str = "variable";
const HIGHLIGHT_TAG_VARIABLE_MUT: &'static str = "variable.mut";
const HIGHLIGHT_TAG_TEXT: &'static str = "text";
const HIGHLIGHT_TAG_TYPE_BUILTIN: &'static str = "type.builtin";
const HIGHLIGHT_TAG_TYPE_SELF: &'static str = "type.self";
const HIGHLIGHT_TAG_TYPE_PARAM: &'static str = "type.param";
const HIGHLIGHT_TAG_TYPE_LIFETIME: &'static str = "type.lifetime";
const HIGHLIGHT_TAG_LITERAL_BYTE: &'static str = "literal.byte";
const HIGHLIGHT_TAG_LITERAL_NUMERIC: &'static str = "literal.numeric";
const HIGHLIGHT_TAG_LITERAL_CHAR: &'static str = "literal.char";
const HIGHLIGHT_TAG_LITERAL_COMMENT: &'static str = "comment";
const HIGHLIGHT_TAG_LITERAL_STRING: &'static str = "string";
const HIGHLIGHT_TAG_LITERAL_ATTRIBUTE: &'static str = "attribute";
const HIGHLIGHT_TAG_KEYWORD_UNSAFE: &'static str = "keyword.unsafe";
const HIGHLIGHT_TAG_KEYWORD_CONTROL: &'static str = "keyword.control";
const HIGHLIGHT_TAG_KEYWORD: &'static str = "keyword";
#[derive(Debug)]
pub struct HighlightedRange {
pub range: TextRange,
@ -71,9 +97,9 @@ pub(crate) fn highlight(db: &RootDatabase, file_id: FileId) -> Vec<HighlightedRa
bindings_shadow_count.clear();
continue;
}
COMMENT => "comment",
STRING | RAW_STRING | RAW_BYTE_STRING | BYTE_STRING => "string",
ATTR => "attribute",
COMMENT => HIGHLIGHT_TAG_LITERAL_COMMENT,
STRING | RAW_STRING | RAW_BYTE_STRING | BYTE_STRING => HIGHLIGHT_TAG_LITERAL_STRING,
ATTR => HIGHLIGHT_TAG_LITERAL_ATTRIBUTE,
NAME_REF => {
if node.ancestors().any(|it| it.kind() == ATTR) {
continue;
@ -90,7 +116,7 @@ pub(crate) fn highlight(db: &RootDatabase, file_id: FileId) -> Vec<HighlightedRa
}
};
name_kind.map_or("text", |it| highlight_name(db, it))
name_kind.map_or(HIGHLIGHT_TAG_TEXT, |it| highlight_name(db, it))
}
NAME => {
let name = node.as_node().cloned().and_then(ast::Name::cast).unwrap();
@ -107,21 +133,25 @@ pub(crate) fn highlight(db: &RootDatabase, file_id: FileId) -> Vec<HighlightedRa
match name_kind {
Some(name_kind) => highlight_name(db, name_kind),
None => name.syntax().parent().map_or("function", |x| match x.kind() {
STRUCT_DEF | ENUM_DEF | TRAIT_DEF | TYPE_ALIAS_DEF => "type",
TYPE_PARAM => "type.param",
RECORD_FIELD_DEF => "field",
_ => "function",
}),
None => {
name.syntax().parent().map_or(HIGHLIGHT_TAG_FUNCTION, |x| match x.kind() {
STRUCT_DEF | ENUM_DEF | TRAIT_DEF | TYPE_ALIAS_DEF => {
HIGHLIGHT_TAG_TYPE
}
TYPE_PARAM => HIGHLIGHT_TAG_TYPE_PARAM,
RECORD_FIELD_DEF => HIGHLIGHT_TAG_FIELD,
_ => HIGHLIGHT_TAG_FUNCTION,
})
}
}
INT_NUMBER | FLOAT_NUMBER => "literal.numeric",
BYTE => "literal.byte",
CHAR => "literal.char",
LIFETIME => "type.lifetime",
T![unsafe] => "keyword.unsafe",
k if is_control_keyword(k) => "keyword.control",
k if k.is_keyword() => "keyword",
}
INT_NUMBER | FLOAT_NUMBER => HIGHLIGHT_TAG_LITERAL_NUMERIC,
BYTE => HIGHLIGHT_TAG_LITERAL_BYTE,
CHAR => HIGHLIGHT_TAG_LITERAL_CHAR,
LIFETIME => HIGHLIGHT_TAG_TYPE_LIFETIME,
T![unsafe] => HIGHLIGHT_TAG_KEYWORD_UNSAFE,
k if is_control_keyword(k) => HIGHLIGHT_TAG_KEYWORD_CONTROL,
k if k.is_keyword() => HIGHLIGHT_TAG_KEYWORD,
_ => {
if let Some(macro_call) = node.as_node().cloned().and_then(ast::MacroCall::cast) {
if let Some(path) = macro_call.path() {
@ -138,7 +168,7 @@ pub(crate) fn highlight(db: &RootDatabase, file_id: FileId) -> Vec<HighlightedRa
}
res.push(HighlightedRange {
range: TextRange::from_to(range_start, range_end),
tag: "macro",
tag: HIGHLIGHT_TAG_MACRO,
binding_hash: None,
})
}
@ -214,29 +244,29 @@ pub(crate) fn highlight_as_html(db: &RootDatabase, file_id: FileId, rainbow: boo
fn highlight_name(db: &RootDatabase, name_kind: NameKind) -> &'static str {
match name_kind {
Macro(_) => "macro",
Field(_) => "field",
AssocItem(hir::AssocItem::Function(_)) => "function",
AssocItem(hir::AssocItem::Const(_)) => "constant",
AssocItem(hir::AssocItem::TypeAlias(_)) => "type",
Def(hir::ModuleDef::Module(_)) => "module",
Def(hir::ModuleDef::Function(_)) => "function",
Def(hir::ModuleDef::Adt(_)) => "type",
Def(hir::ModuleDef::EnumVariant(_)) => "constant",
Def(hir::ModuleDef::Const(_)) => "constant",
Def(hir::ModuleDef::Static(_)) => "constant",
Def(hir::ModuleDef::Trait(_)) => "type",
Def(hir::ModuleDef::TypeAlias(_)) => "type",
Def(hir::ModuleDef::BuiltinType(_)) => "type.builtin",
SelfType(_) => "type.self",
TypeParam(_) => "type.param",
Macro(_) => HIGHLIGHT_TAG_MACRO,
Field(_) => HIGHLIGHT_TAG_FIELD,
AssocItem(hir::AssocItem::Function(_)) => HIGHLIGHT_TAG_FUNCTION,
AssocItem(hir::AssocItem::Const(_)) => HIGHLIGHT_TAG_CONSTANT,
AssocItem(hir::AssocItem::TypeAlias(_)) => HIGHLIGHT_TAG_TYPE,
Def(hir::ModuleDef::Module(_)) => HIGHLIGHT_TAG_MODULE,
Def(hir::ModuleDef::Function(_)) => HIGHLIGHT_TAG_FUNCTION,
Def(hir::ModuleDef::Adt(_)) => HIGHLIGHT_TAG_TYPE,
Def(hir::ModuleDef::EnumVariant(_)) => HIGHLIGHT_TAG_CONSTANT,
Def(hir::ModuleDef::Const(_)) => HIGHLIGHT_TAG_CONSTANT,
Def(hir::ModuleDef::Static(_)) => HIGHLIGHT_TAG_CONSTANT,
Def(hir::ModuleDef::Trait(_)) => HIGHLIGHT_TAG_TYPE,
Def(hir::ModuleDef::TypeAlias(_)) => HIGHLIGHT_TAG_TYPE,
Def(hir::ModuleDef::BuiltinType(_)) => HIGHLIGHT_TAG_TYPE_BUILTIN,
SelfType(_) => HIGHLIGHT_TAG_TYPE_SELF,
TypeParam(_) => HIGHLIGHT_TAG_TYPE_PARAM,
Local(local) => {
if local.is_mut(db) {
"variable.mut"
HIGHLIGHT_TAG_VARIABLE_MUT
} else if local.ty(db).is_mutable_reference() {
"variable.mut"
HIGHLIGHT_TAG_VARIABLE_MUT
} else {
"variable"
HIGHLIGHT_TAG_VARIABLE
}
}
}