rename all things

crates/ra_editor/src/lib.rs

@@ -0,0 +1,228 @@
+extern crate ra_syntax;
+extern crate superslice;
+extern crate itertools;
+extern crate join_to_string;
+#[cfg(test)]
+#[macro_use]
+extern crate test_utils as _test_utils;
+
+mod extend_selection;
+mod symbols;
+mod line_index;
+mod edit;
+mod code_actions;
+mod typing;
+mod completion;
+mod scope;
+#[cfg(test)]
+mod test_utils;
+
+use ra_syntax::{
+    File, TextUnit, TextRange, SyntaxNodeRef,
+    ast::{self, AstNode, NameOwner},
+    algo::{walk, find_leaf_at_offset, ancestors},
+    SyntaxKind::{self, *},
+};
+pub use ra_syntax::AtomEdit;
+pub use self::{
+    line_index::{LineIndex, LineCol},
+    extend_selection::extend_selection,
+    symbols::{StructureNode, file_structure, FileSymbol, file_symbols},
+    edit::{EditBuilder, Edit},
+    code_actions::{
+        LocalEdit,
+        flip_comma, add_derive, add_impl,
+        introduce_variable,
+    },
+    typing::{join_lines, on_eq_typed},
+    completion::{scope_completion, CompletionItem},
+};
+
+#[derive(Debug)]
+pub struct HighlightedRange {
+    pub range: TextRange,
+    pub tag: &'static str,
+}
+
+#[derive(Debug)]
+pub struct Diagnostic {
+    pub range: TextRange,
+    pub msg: String,
+}
+
+#[derive(Debug)]
+pub struct Runnable {
+    pub range: TextRange,
+    pub kind: RunnableKind,
+}
+
+#[derive(Debug)]
+pub enum RunnableKind {
+    Test { name: String },
+    Bin,
+}
+
+pub fn matching_brace(file: &File, offset: TextUnit) -> Option<TextUnit> {
+    const BRACES: &[SyntaxKind] = &[
+        L_CURLY, R_CURLY,
+        L_BRACK, R_BRACK,
+        L_PAREN, R_PAREN,
+        L_ANGLE, R_ANGLE,
+    ];
+    let (brace_node, brace_idx) = find_leaf_at_offset(file.syntax(), offset)
+        .filter_map(|node| {
+            let idx = BRACES.iter().position(|&brace| brace == node.kind())?;
+            Some((node, idx))
+        })
+        .next()?;
+    let parent = brace_node.parent()?;
+    let matching_kind = BRACES[brace_idx ^ 1];
+    let matching_node = parent.children()
+        .find(|node| node.kind() == matching_kind)?;
+    Some(matching_node.range().start())
+}
+
+pub fn highlight(file: &File) -> Vec<HighlightedRange> {
+    let mut res = Vec::new();
+    for node in walk::preorder(file.syntax()) {
+        let tag = match node.kind() {
+            ERROR => "error",
+            COMMENT | DOC_COMMENT => "comment",
+            STRING | RAW_STRING | RAW_BYTE_STRING | BYTE_STRING => "string",
+            ATTR => "attribute",
+            NAME_REF => "text",
+            NAME => "function",
+            INT_NUMBER | FLOAT_NUMBER | CHAR | BYTE => "literal",
+            LIFETIME => "parameter",
+            k if k.is_keyword() => "keyword",
+            _ => continue,
+        };
+        res.push(HighlightedRange {
+            range: node.range(),
+            tag,
+        })
+    }
+    res
+}
+
+pub fn diagnostics(file: &File) -> Vec<Diagnostic> {
+    let mut res = Vec::new();
+
+    for node in walk::preorder(file.syntax()) {
+        if node.kind() == ERROR {
+            res.push(Diagnostic {
+                range: node.range(),
+                msg: "Syntax Error".to_string(),
+            });
+        }
+    }
+    res.extend(file.errors().into_iter().map(|err| Diagnostic {
+        range: TextRange::offset_len(err.offset, 1.into()),
+        msg: err.msg,
+    }));
+    res
+}
+
+pub fn syntax_tree(file: &File) -> String {
+    ::ra_syntax::utils::dump_tree(file.syntax())
+}
+
+pub fn runnables(file: &File) -> Vec<Runnable> {
+    walk::preorder(file.syntax())
+        .filter_map(ast::FnDef::cast)
+        .filter_map(|f| {
+            let name = f.name()?.text();
+            let kind = if name == "main" {
+                RunnableKind::Bin
+            } else if f.has_atom_attr("test") {
+                RunnableKind::Test {
+                    name: name.to_string()
+                }
+            } else {
+                return None;
+            };
+            Some(Runnable {
+                range: f.syntax().range(),
+                kind,
+            })
+        })
+        .collect()
+}
+
+pub fn find_node_at_offset<'a, N: AstNode<'a>>(
+    syntax: SyntaxNodeRef<'a>,
+    offset: TextUnit,
+) -> Option<N> {
+    let leaves = find_leaf_at_offset(syntax, offset);
+    let leaf = leaves.clone()
+        .find(|leaf| !leaf.kind().is_trivia())
+        .or_else(|| leaves.right_biased())?;
+    ancestors(leaf)
+        .filter_map(N::cast)
+        .next()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use test_utils::{assert_eq_dbg, extract_offset, add_cursor};
+
+    #[test]
+    fn test_highlighting() {
+        let file = File::parse(r#"
+// comment
+fn main() {}
+    println!("Hello, {}!", 92);
+"#);
+        let hls = highlight(&file);
+        assert_eq_dbg(
+            r#"[HighlightedRange { range: [1; 11), tag: "comment" },
+                HighlightedRange { range: [12; 14), tag: "keyword" },
+                HighlightedRange { range: [15; 19), tag: "function" },
+                HighlightedRange { range: [29; 36), tag: "text" },
+                HighlightedRange { range: [38; 50), tag: "string" },
+                HighlightedRange { range: [52; 54), tag: "literal" }]"#,
+            &hls,
+        );
+    }
+
+    #[test]
+    fn test_runnables() {
+      let file = File::parse(r#"
+fn main() {}
+
+#[test]
+fn test_foo() {}
+
+#[test]
+#[ignore]
+fn test_foo() {}
+"#);
+        let runnables = runnables(&file);
+        assert_eq_dbg(
+            r#"[Runnable { range: [1; 13), kind: Bin },
+                Runnable { range: [15; 39), kind: Test { name: "test_foo" } },
+                Runnable { range: [41; 75), kind: Test { name: "test_foo" } }]"#,
+            &runnables,
+        )
+    }
+
+    #[test]
+    fn test_matching_brace() {
+        fn do_check(before: &str, after: &str) {
+            let (pos, before) = extract_offset(before);
+            let file = File::parse(&before);
+            let new_pos = match matching_brace(&file, pos) {
+                None => pos,
+                Some(pos) => pos,
+            };
+            let actual = add_cursor(&before, new_pos);
+            assert_eq_text!(after, &actual);
+        }
+
+        do_check(
+            "struct Foo { a: i32, }<|>",
+            "struct Foo <|>{ a: i32, }",
+        );
+    }
+}