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Use a hand-coded parser for keymap context predicates

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This commit is contained in:
Max Brunsfeld 2023-01-16 14:41:24 -08:00
parent 96186a3dae
commit f62d13de21
17 changed files with 240 additions and 1766 deletions
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12
crates/gpui/build.rs
View file

@ -6,7 +6,6 @@ use std::{
fn main() { fn main() {
generate_dispatch_bindings(); generate_dispatch_bindings();
compile_context_predicate_parser();
compile_metal_shaders(); compile_metal_shaders();
generate_shader_bindings(); generate_shader_bindings();
} }
@ -30,17 +29,6 @@ fn generate_dispatch_bindings() {
.expect("couldn't write dispatch bindings"); .expect("couldn't write dispatch bindings");
} }
fn compile_context_predicate_parser() {
let dir = PathBuf::from("./grammars/context-predicate/src");
let parser_c = dir.join("parser.c");
println!("cargo:rerun-if-changed={}", &parser_c.to_str().unwrap());
cc::Build::new()
.include(&dir)
.file(parser_c)
.compile("tree_sitter_context_predicate");
}
const SHADER_HEADER_PATH: &str = "./src/platform/mac/shaders/shaders.h"; const SHADER_HEADER_PATH: &str = "./src/platform/mac/shaders/shaders.h";
fn compile_metal_shaders() { fn compile_metal_shaders() {

2
crates/gpui/grammars/context-predicate/.gitignore vendored
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@ -1,2 +0,0 @@
/node_modules
/build

20
crates/gpui/grammars/context-predicate/Cargo.toml
View file

@ -1,20 +0,0 @@
[package]
name = "tree-sitter-context-predicate"
description = "context-predicate grammar for the tree-sitter parsing library"
version = "0.0.1"
keywords = ["incremental", "parsing", "context-predicate"]
categories = ["parsing", "text-editors"]
repository = "https://github.com/tree-sitter/tree-sitter-javascript"
edition = "2021"
license = "MIT"
build = "bindings/rust/build.rs"
include = ["bindings/rust/*", "grammar.js", "queries/*", "src/*"]
[lib]
path = "bindings/rust/lib.rs"
[dependencies]
tree-sitter = "0.20"
[build-dependencies]
cc = "1.0"

18
crates/gpui/grammars/context-predicate/binding.gyp
View file

@ -1,18 +0,0 @@
{
"targets": [
{
"target_name": "tree_sitter_context_predicate_binding",
"include_dirs": [
"<!(node -e \"require('nan')\")",
"src"
],
"sources": [
"src/parser.c",
"bindings/node/binding.cc"
],
"cflags_c": [
"-std=c99",
]
}
]
}

30
crates/gpui/grammars/context-predicate/bindings/node/binding.cc
View file

@ -1,30 +0,0 @@
#include "nan.h"
#include "tree_sitter/parser.h"
#include <node.h>
using namespace v8;
extern "C" TSLanguage *tree_sitter_context_predicate();
namespace {
NAN_METHOD(New) {}
void Init(Local<Object> exports, Local<Object> module) {
Local<FunctionTemplate> tpl = Nan::New<FunctionTemplate>(New);
tpl->SetClassName(Nan::New("Language").ToLocalChecked());
tpl->InstanceTemplate()->SetInternalFieldCount(1);
Local<Function> constructor = Nan::GetFunction(tpl).ToLocalChecked();
Local<Object> instance =
constructor->NewInstance(Nan::GetCurrentContext()).ToLocalChecked();
Nan::SetInternalFieldPointer(instance, 0, tree_sitter_context_predicate());
Nan::Set(instance, Nan::New("name").ToLocalChecked(),
Nan::New("context_predicate").ToLocalChecked());
Nan::Set(module, Nan::New("exports").ToLocalChecked(), instance);
}
NODE_MODULE(tree_sitter_context_predicate_binding, Init)
} // namespace

19
crates/gpui/grammars/context-predicate/bindings/node/index.js
View file

@ -1,19 +0,0 @@
try {
module.exports = require("../../build/Release/tree_sitter_context_predicate_binding");
} catch (error1) {
if (error1.code !== 'MODULE_NOT_FOUND') {
throw error1;
}
try {
module.exports = require("../../build/Debug/tree_sitter_context_predicate_binding");
} catch (error2) {
if (error2.code !== 'MODULE_NOT_FOUND') {
throw error2;
}
throw error1
}
}
try {
module.exports.nodeTypeInfo = require("../../src/node-types.json");
} catch (_) {}

40
crates/gpui/grammars/context-predicate/bindings/rust/build.rs
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@ -1,40 +0,0 @@
fn main() {
let src_dir = std::path::Path::new("src");
let mut c_config = cc::Build::new();
c_config.include(&src_dir);
c_config
.flag_if_supported("-Wno-unused-parameter")
.flag_if_supported("-Wno-unused-but-set-variable")
.flag_if_supported("-Wno-trigraphs");
let parser_path = src_dir.join("parser.c");
c_config.file(&parser_path);
// If your language uses an external scanner written in C,
// then include this block of code:
/*
let scanner_path = src_dir.join("scanner.c");
c_config.file(&scanner_path);
println!("cargo:rerun-if-changed={}", scanner_path.to_str().unwrap());
*/
c_config.compile("parser");
println!("cargo:rerun-if-changed={}", parser_path.to_str().unwrap());
// If your language uses an external scanner written in C++,
// then include this block of code:
/*
let mut cpp_config = cc::Build::new();
cpp_config.cpp(true);
cpp_config.include(&src_dir);
cpp_config
.flag_if_supported("-Wno-unused-parameter")
.flag_if_supported("-Wno-unused-but-set-variable");
let scanner_path = src_dir.join("scanner.cc");
cpp_config.file(&scanner_path);
cpp_config.compile("scanner");
println!("cargo:rerun-if-changed={}", scanner_path.to_str().unwrap());
*/
}

52
crates/gpui/grammars/context-predicate/bindings/rust/lib.rs
View file

@ -1,52 +0,0 @@
//! This crate provides context_predicate language support for the [tree-sitter][] parsing library.
//!
//! Typically, you will use the [language][language func] function to add this language to a
//! tree-sitter [Parser][], and then use the parser to parse some code:
//!
//! ```
//! let code = "";
//! let mut parser = tree_sitter::Parser::new();
//! parser.set_language(tree_sitter_context_predicate::language()).expect("Error loading context_predicate grammar");
//! let tree = parser.parse(code, None).unwrap();
//! ```
//!
//! [Language]: https://docs.rs/tree-sitter/*/tree_sitter/struct.Language.html
//! [language func]: fn.language.html
//! [Parser]: https://docs.rs/tree-sitter/*/tree_sitter/struct.Parser.html
//! [tree-sitter]: https://tree-sitter.github.io/
use tree_sitter::Language;
extern "C" {
fn tree_sitter_context_predicate() -> Language;
}
/// Get the tree-sitter [Language][] for this grammar.
///
/// [Language]: https://docs.rs/tree-sitter/*/tree_sitter/struct.Language.html
pub fn language() -> Language {
unsafe { tree_sitter_context_predicate() }
}
/// The content of the [`node-types.json`][] file for this grammar.
///
/// [`node-types.json`]: https://tree-sitter.github.io/tree-sitter/using-parsers#static-node-types
pub const NODE_TYPES: &'static str = include_str!("../../src/node-types.json");
// Uncomment these to include any queries that this grammar contains
// pub const HIGHLIGHTS_QUERY: &'static str = include_str!("../../queries/highlights.scm");
// pub const INJECTIONS_QUERY: &'static str = include_str!("../../queries/injections.scm");
// pub const LOCALS_QUERY: &'static str = include_str!("../../queries/locals.scm");
// pub const TAGS_QUERY: &'static str = include_str!("../../queries/tags.scm");
#[cfg(test)]
mod tests {
#[test]
fn test_can_load_grammar() {
let mut parser = tree_sitter::Parser::new();
parser
.set_language(super::language())
.expect("Error loading context_predicate language");
}
}

49
crates/gpui/grammars/context-predicate/corpus/expressions.txt
View file

@ -1,49 +0,0 @@
==================
Identifiers
==================
abc12
---
(source (identifier))
==================
Negation
==================
!abc
---
(source (not (identifier)))
==================
And/Or
==================
a || b && c && d
---
(source
(or
(identifier)
(and
(and (identifier) (identifier))
(identifier))))
==================
Expressions
==================
a && (b == c || d != e)
---
(source
(and
(identifier)
(parenthesized (or
(equal (identifier) (identifier))
(not_equal (identifier) (identifier))))))

31
crates/gpui/grammars/context-predicate/grammar.js
View file

@ -1,31 +0,0 @@
module.exports = grammar({
name: 'context_predicate',
rules: {
source: $ => $._expression,
_expression: $ => choice(
$.identifier,
$.not,
$.and,
$.or,
$.equal,
$.not_equal,
$.parenthesized,
),
identifier: $ => /[A-Za-z0-9_-]+/,
not: $ => prec(3, seq("!", field("expression", $._expression))),
and: $ => prec.left(2, seq(field("left", $._expression), "&&", field("right", $._expression))),
or: $ => prec.left(1, seq(field("left", $._expression), "||", field("right", $._expression))),
equal: $ => seq(field("left", $.identifier), "==", field("right", $.identifier)),
not_equal: $ => seq(field("left", $.identifier), "!=", field("right", $.identifier)),
parenthesized: $ => seq("(", field("expression", $._expression), ")"),
}
});

44
crates/gpui/grammars/context-predicate/package-lock.json generated
View file

@ -1,44 +0,0 @@
{
"name": "tree-sitter-context-predicate",
"lockfileVersion": 2,
"requires": true,
"packages": {
"": {
"name": "tree-sitter-context-predicate",
"dependencies": {
"nan": "^2.14.0"
},
"devDependencies": {
"tree-sitter-cli": "^0.19.5"
}
},
"node_modules/nan": {
"version": "2.14.2",
"resolved": "https://registry.npmjs.org/nan/-/nan-2.14.2.tgz",
"integrity": "sha512-M2ufzIiINKCuDfBSAUr1vWQ+vuVcA9kqx8JJUsbQi6yf1uGRyb7HfpdfUr5qLXf3B/t8dPvcjhKMmlfnP47EzQ=="
},
"node_modules/tree-sitter-cli": {
"version": "0.19.5",
"resolved": "https://registry.npmjs.org/tree-sitter-cli/-/tree-sitter-cli-0.19.5.tgz",
"integrity": "sha512-kRzKrUAwpDN9AjA3b0tPBwT1hd8N2oQvvvHup2OEsX6mdsSMLmAvR+NSqK9fe05JrRbVvG8mbteNUQsxlMQohQ==",
"dev": true,
"hasInstallScript": true,
"bin": {
"tree-sitter": "cli.js"
}
}
},
"dependencies": {
"nan": {
"version": "2.14.2",
"resolved": "https://registry.npmjs.org/nan/-/nan-2.14.2.tgz",
"integrity": "sha512-M2ufzIiINKCuDfBSAUr1vWQ+vuVcA9kqx8JJUsbQi6yf1uGRyb7HfpdfUr5qLXf3B/t8dPvcjhKMmlfnP47EzQ=="
},
"tree-sitter-cli": {
"version": "0.19.5",
"resolved": "https://registry.npmjs.org/tree-sitter-cli/-/tree-sitter-cli-0.19.5.tgz",
"integrity": "sha512-kRzKrUAwpDN9AjA3b0tPBwT1hd8N2oQvvvHup2OEsX6mdsSMLmAvR+NSqK9fe05JrRbVvG8mbteNUQsxlMQohQ==",
"dev": true
}
}
}

10
crates/gpui/grammars/context-predicate/package.json
View file

@ -1,10 +0,0 @@
{
"name": "tree-sitter-context-predicate",
"main": "bindings/node",
"devDependencies": {
"tree-sitter-cli": "^0.19.5"
},
"dependencies": {
"nan": "^2.14.0"
}
}

208
crates/gpui/grammars/context-predicate/src/grammar.json
View file

@ -1,208 +0,0 @@
{
"name": "context_predicate",
"rules": {
"source": {
"type": "SYMBOL",
"name": "_expression"
},
"_expression": {
"type": "CHOICE",
"members": [
{
"type": "SYMBOL",
"name": "identifier"
},
{
"type": "SYMBOL",
"name": "not"
},
{
"type": "SYMBOL",
"name": "and"
},
{
"type": "SYMBOL",
"name": "or"
},
{
"type": "SYMBOL",
"name": "equal"
},
{
"type": "SYMBOL",
"name": "not_equal"
},
{
"type": "SYMBOL",
"name": "parenthesized"
}
]
},
"identifier": {
"type": "PATTERN",
"value": "[A-Za-z0-9_-]+"
},
"not": {
"type": "PREC",
"value": 3,
"content": {
"type": "SEQ",
"members": [
{
"type": "STRING",
"value": "!"
},
{
"type": "FIELD",
"name": "expression",
"content": {
"type": "SYMBOL",
"name": "_expression"
}
}
]
}
},
"and": {
"type": "PREC_LEFT",
"value": 2,
"content": {
"type": "SEQ",
"members": [
{
"type": "FIELD",
"name": "left",
"content": {
"type": "SYMBOL",
"name": "_expression"
}
},
{
"type": "STRING",
"value": "&&"
},
{
"type": "FIELD",
"name": "right",
"content": {
"type": "SYMBOL",
"name": "_expression"
}
}
]
}
},
"or": {
"type": "PREC_LEFT",
"value": 1,
"content": {
"type": "SEQ",
"members": [
{
"type": "FIELD",
"name": "left",
"content": {
"type": "SYMBOL",
"name": "_expression"
}
},
{
"type": "STRING",
"value": "||"
},
{
"type": "FIELD",
"name": "right",
"content": {
"type": "SYMBOL",
"name": "_expression"
}
}
]
}
},
"equal": {
"type": "SEQ",
"members": [
{
"type": "FIELD",
"name": "left",
"content": {
"type": "SYMBOL",
"name": "identifier"
}
},
{
"type": "STRING",
"value": "=="
},
{
"type": "FIELD",
"name": "right",
"content": {
"type": "SYMBOL",
"name": "identifier"
}
}
]
},
"not_equal": {
"type": "SEQ",
"members": [
{
"type": "FIELD",
"name": "left",
"content": {
"type": "SYMBOL",
"name": "identifier"
}
},
{
"type": "STRING",
"value": "!="
},
{
"type": "FIELD",
"name": "right",
"content": {
"type": "SYMBOL",
"name": "identifier"
}
}
]
},
"parenthesized": {
"type": "SEQ",
"members": [
{
"type": "STRING",
"value": "("
},
{
"type": "FIELD",
"name": "expression",
"content": {
"type": "SYMBOL",
"name": "_expression"
}
},
{
"type": "STRING",
"value": ")"
}
]
}
},
"extras": [
{
"type": "PATTERN",
"value": "\\s"
}
],
"conflicts": [],
"precedences": [],
"externals": [],
"inline": [],
"supertypes": []
}

353
crates/gpui/grammars/context-predicate/src/node-types.json
View file

@ -1,353 +0,0 @@
[
{
"type": "and",
"named": true,
"fields": {
"left": {
"multiple": false,
"required": true,
"types": [
{
"type": "and",
"named": true
},
{
"type": "equal",
"named": true
},
{
"type": "identifier",
"named": true
},
{
"type": "not",
"named": true
},
{
"type": "not_equal",
"named": true
},
{
"type": "or",
"named": true
},
{
"type": "parenthesized",
"named": true
}
]
},
"right": {
"multiple": false,
"required": true,
"types": [
{
"type": "and",
"named": true
},
{
"type": "equal",
"named": true
},
{
"type": "identifier",
"named": true
},
{
"type": "not",
"named": true
},
{
"type": "not_equal",
"named": true
},
{
"type": "or",
"named": true
},
{
"type": "parenthesized",
"named": true
}
]
}
}
},
{
"type": "equal",
"named": true,
"fields": {
"left": {
"multiple": false,
"required": true,
"types": [
{
"type": "identifier",
"named": true
}
]
},
"right": {
"multiple": false,
"required": true,
"types": [
{
"type": "identifier",
"named": true
}
]
}
}
},
{
"type": "not",
"named": true,
"fields": {
"expression": {
"multiple": false,
"required": true,
"types": [
{
"type": "and",
"named": true
},
{
"type": "equal",
"named": true
},
{
"type": "identifier",
"named": true
},
{
"type": "not",
"named": true
},
{
"type": "not_equal",
"named": true
},
{
"type": "or",
"named": true
},
{
"type": "parenthesized",
"named": true
}
]
}
}
},
{
"type": "not_equal",
"named": true,
"fields": {
"left": {
"multiple": false,
"required": true,
"types": [
{
"type": "identifier",
"named": true
}
]
},
"right": {
"multiple": false,
"required": true,
"types": [
{
"type": "identifier",
"named": true
}
]
}
}
},
{
"type": "or",
"named": true,
"fields": {
"left": {
"multiple": false,
"required": true,
"types": [
{
"type": "and",
"named": true
},
{
"type": "equal",
"named": true
},
{
"type": "identifier",
"named": true
},
{
"type": "not",
"named": true
},
{
"type": "not_equal",
"named": true
},
{
"type": "or",
"named": true
},
{
"type": "parenthesized",
"named": true
}
]
},
"right": {
"multiple": false,
"required": true,
"types": [
{
"type": "and",
"named": true
},
{
"type": "equal",
"named": true
},
{
"type": "identifier",
"named": true
},
{
"type": "not",
"named": true
},
{
"type": "not_equal",
"named": true
},
{
"type": "or",
"named": true
},
{
"type": "parenthesized",
"named": true
}
]
}
}
},
{
"type": "parenthesized",
"named": true,
"fields": {
"expression": {
"multiple": false,
"required": true,
"types": [
{
"type": "and",
"named": true
},
{
"type": "equal",
"named": true
},
{
"type": "identifier",
"named": true
},
{
"type": "not",
"named": true
},
{
"type": "not_equal",
"named": true
},
{
"type": "or",
"named": true
},
{
"type": "parenthesized",
"named": true
}
]
}
}
},
{
"type": "source",
"named": true,
"fields": {},
"children": {
"multiple": false,
"required": true,
"types": [
{
"type": "and",
"named": true
},
{
"type": "equal",
"named": true
},
{
"type": "identifier",
"named": true
},
{
"type": "not",
"named": true
},
{
"type": "not_equal",
"named": true
},
{
"type": "or",
"named": true
},
{
"type": "parenthesized",
"named": true
}
]
}
},
{
"type": "!",
"named": false
},
{
"type": "!=",
"named": false
},
{
"type": "&&",
"named": false
},
{
"type": "(",
"named": false
},
{
"type": ")",
"named": false
},
{
"type": "==",
"named": false
},
{
"type": "identifier",
"named": true
},
{
"type": "||",
"named": false
}
]

584
crates/gpui/grammars/context-predicate/src/parser.c
View file

@ -1,584 +0,0 @@
#include <tree_sitter/parser.h>
#if defined(__GNUC__) || defined(__clang__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmissing-field-initializers"
#endif
#define LANGUAGE_VERSION 13
#define STATE_COUNT 18
#define LARGE_STATE_COUNT 6
#define SYMBOL_COUNT 17
#define ALIAS_COUNT 0
#define TOKEN_COUNT 9
#define EXTERNAL_TOKEN_COUNT 0
#define FIELD_COUNT 3
#define MAX_ALIAS_SEQUENCE_LENGTH 3
#define PRODUCTION_ID_COUNT 3
enum {
sym_identifier = 1,
anon_sym_BANG = 2,
anon_sym_AMP_AMP = 3,
anon_sym_PIPE_PIPE = 4,
anon_sym_EQ_EQ = 5,
anon_sym_BANG_EQ = 6,
anon_sym_LPAREN = 7,
anon_sym_RPAREN = 8,
sym_source = 9,
sym__expression = 10,
sym_not = 11,
sym_and = 12,
sym_or = 13,
sym_equal = 14,
sym_not_equal = 15,
sym_parenthesized = 16,
};
static const char *const ts_symbol_names[] = {
[ts_builtin_sym_end] = "end",
[sym_identifier] = "identifier",
[anon_sym_BANG] = "!",
[anon_sym_AMP_AMP] = "&&",
[anon_sym_PIPE_PIPE] = "||",
[anon_sym_EQ_EQ] = "==",
[anon_sym_BANG_EQ] = "!=",
[anon_sym_LPAREN] = "(",
[anon_sym_RPAREN] = ")",
[sym_source] = "source",
[sym__expression] = "_expression",
[sym_not] = "not",
[sym_and] = "and",
[sym_or] = "or",
[sym_equal] = "equal",
[sym_not_equal] = "not_equal",
[sym_parenthesized] = "parenthesized",
};
static const TSSymbol ts_symbol_map[] = {
[ts_builtin_sym_end] = ts_builtin_sym_end,
[sym_identifier] = sym_identifier,
[anon_sym_BANG] = anon_sym_BANG,
[anon_sym_AMP_AMP] = anon_sym_AMP_AMP,
[anon_sym_PIPE_PIPE] = anon_sym_PIPE_PIPE,
[anon_sym_EQ_EQ] = anon_sym_EQ_EQ,
[anon_sym_BANG_EQ] = anon_sym_BANG_EQ,
[anon_sym_LPAREN] = anon_sym_LPAREN,
[anon_sym_RPAREN] = anon_sym_RPAREN,
[sym_source] = sym_source,
[sym__expression] = sym__expression,
[sym_not] = sym_not,
[sym_and] = sym_and,
[sym_or] = sym_or,
[sym_equal] = sym_equal,
[sym_not_equal] = sym_not_equal,
[sym_parenthesized] = sym_parenthesized,
};
static const TSSymbolMetadata ts_symbol_metadata[] = {
[ts_builtin_sym_end] =
{
.visible = false,
.named = true,
},
[sym_identifier] =
{
.visible = true,
.named = true,
},
[anon_sym_BANG] =
{
.visible = true,
.named = false,
},
[anon_sym_AMP_AMP] =
{
.visible = true,
.named = false,
},
[anon_sym_PIPE_PIPE] =
{
.visible = true,
.named = false,
},
[anon_sym_EQ_EQ] =
{
.visible = true,
.named = false,
},
[anon_sym_BANG_EQ] =
{
.visible = true,
.named = false,
},
[anon_sym_LPAREN] =
{
.visible = true,
.named = false,
},
[anon_sym_RPAREN] =
{
.visible = true,
.named = false,
},
[sym_source] =
{
.visible = true,
.named = true,
},
[sym__expression] =
{
.visible = false,
.named = true,
},
[sym_not] =
{
.visible = true,
.named = true,
},
[sym_and] =
{
.visible = true,
.named = true,
},
[sym_or] =
{
.visible = true,
.named = true,
},
[sym_equal] =
{
.visible = true,
.named = true,
},
[sym_not_equal] =
{
.visible = true,
.named = true,
},
[sym_parenthesized] =
{
.visible = true,
.named = true,
},
};
enum {
field_expression = 1,
field_left = 2,
field_right = 3,
};
static const char *const ts_field_names[] = {
[0] = NULL,
[field_expression] = "expression",
[field_left] = "left",
[field_right] = "right",
};
static const TSFieldMapSlice ts_field_map_slices[PRODUCTION_ID_COUNT] = {
[1] = {.index = 0, .length = 1},
[2] = {.index = 1, .length = 2},
};
static const TSFieldMapEntry ts_field_map_entries[] = {
[0] = {field_expression, 1},
[1] = {field_left, 0},
{field_right, 2},
};
static const TSSymbol ts_alias_sequences[PRODUCTION_ID_COUNT]
[MAX_ALIAS_SEQUENCE_LENGTH] = {
[0] = {0},
};
static const uint16_t ts_non_terminal_alias_map[] = {
0,
};
static bool ts_lex(TSLexer *lexer, TSStateId state) {
START_LEXER();
eof = lexer->eof(lexer);
switch (state) {
case 0:
if (eof)
ADVANCE(7);
if (lookahead == '!')
ADVANCE(10);
if (lookahead == '&')
ADVANCE(2);
if (lookahead == '(')
ADVANCE(15);
if (lookahead == ')')
ADVANCE(16);
if (lookahead == '=')
ADVANCE(4);
if (lookahead == '|')
ADVANCE(5);
if (lookahead == '\t' || lookahead == '\n' || lookahead == '\r' ||
lookahead == ' ')
SKIP(0)
if (lookahead == '-' || ('0' <= lookahead && lookahead <= '9') ||
('A' <= lookahead && lookahead <= 'Z') || lookahead == '_' ||
('a' <= lookahead && lookahead <= 'z'))
ADVANCE(8);
END_STATE();
case 1:
if (lookahead == '!')
ADVANCE(9);
if (lookahead == '(')
ADVANCE(15);
if (lookahead == '\t' || lookahead == '\n' || lookahead == '\r' ||
lookahead == ' ')
SKIP(1)
if (lookahead == '-' || ('0' <= lookahead && lookahead <= '9') ||
('A' <= lookahead && lookahead <= 'Z') || lookahead == '_' ||
('a' <= lookahead && lookahead <= 'z'))
ADVANCE(8);
END_STATE();
case 2:
if (lookahead == '&')
ADVANCE(11);
END_STATE();
case 3:
if (lookahead == '=')
ADVANCE(14);
END_STATE();
case 4:
if (lookahead == '=')
ADVANCE(13);
END_STATE();
case 5:
if (lookahead == '|')
ADVANCE(12);
END_STATE();
case 6:
if (eof)
ADVANCE(7);
if (lookahead == '!')
ADVANCE(3);
if (lookahead == '&')
ADVANCE(2);
if (lookahead == ')')
ADVANCE(16);
if (lookahead == '=')
ADVANCE(4);
if (lookahead == '|')
ADVANCE(5);
if (lookahead == '\t' || lookahead == '\n' || lookahead == '\r' ||
lookahead == ' ')
SKIP(6)
END_STATE();
case 7:
ACCEPT_TOKEN(ts_builtin_sym_end);
END_STATE();
case 8:
ACCEPT_TOKEN(sym_identifier);
if (lookahead == '-' || ('0' <= lookahead && lookahead <= '9') ||
('A' <= lookahead && lookahead <= 'Z') || lookahead == '_' ||
('a' <= lookahead && lookahead <= 'z'))
ADVANCE(8);
END_STATE();
case 9:
ACCEPT_TOKEN(anon_sym_BANG);
END_STATE();
case 10:
ACCEPT_TOKEN(anon_sym_BANG);
if (lookahead == '=')
ADVANCE(14);
END_STATE();
case 11:
ACCEPT_TOKEN(anon_sym_AMP_AMP);
END_STATE();
case 12:
ACCEPT_TOKEN(anon_sym_PIPE_PIPE);
END_STATE();
case 13:
ACCEPT_TOKEN(anon_sym_EQ_EQ);
END_STATE();
case 14:
ACCEPT_TOKEN(anon_sym_BANG_EQ);
END_STATE();
case 15:
ACCEPT_TOKEN(anon_sym_LPAREN);
END_STATE();
case 16:
ACCEPT_TOKEN(anon_sym_RPAREN);
END_STATE();
default:
return false;
}
}
static const TSLexMode ts_lex_modes[STATE_COUNT] = {
[0] = {.lex_state = 0}, [1] = {.lex_state = 1}, [2] = {.lex_state = 1},
[3] = {.lex_state = 1}, [4] = {.lex_state = 1}, [5] = {.lex_state = 1},
[6] = {.lex_state = 6}, [7] = {.lex_state = 0}, [8] = {.lex_state = 0},
[9] = {.lex_state = 0}, [10] = {.lex_state = 0}, [11] = {.lex_state = 0},
[12] = {.lex_state = 0}, [13] = {.lex_state = 0}, [14] = {.lex_state = 0},
[15] = {.lex_state = 0}, [16] = {.lex_state = 0}, [17] = {.lex_state = 0},
};
static const uint16_t ts_parse_table[LARGE_STATE_COUNT][SYMBOL_COUNT] = {
[0] =
{
[ts_builtin_sym_end] = ACTIONS(1),
[sym_identifier] = ACTIONS(1),
[anon_sym_BANG] = ACTIONS(1),
[anon_sym_AMP_AMP] = ACTIONS(1),
[anon_sym_PIPE_PIPE] = ACTIONS(1),
[anon_sym_EQ_EQ] = ACTIONS(1),
[anon_sym_BANG_EQ] = ACTIONS(1),
[anon_sym_LPAREN] = ACTIONS(1),
[anon_sym_RPAREN] = ACTIONS(1),
},
[1] =
{
[sym_source] = STATE(15),
[sym__expression] = STATE(13),
[sym_not] = STATE(13),
[sym_and] = STATE(13),
[sym_or] = STATE(13),
[sym_equal] = STATE(13),
[sym_not_equal] = STATE(13),
[sym_parenthesized] = STATE(13),
[sym_identifier] = ACTIONS(3),
[anon_sym_BANG] = ACTIONS(5),
[anon_sym_LPAREN] = ACTIONS(7),
},
[2] =
{
[sym__expression] = STATE(7),
[sym_not] = STATE(7),
[sym_and] = STATE(7),
[sym_or] = STATE(7),
[sym_equal] = STATE(7),
[sym_not_equal] = STATE(7),
[sym_parenthesized] = STATE(7),
[sym_identifier] = ACTIONS(3),
[anon_sym_BANG] = ACTIONS(5),
[anon_sym_LPAREN] = ACTIONS(7),
},
[3] =
{
[sym__expression] = STATE(14),
[sym_not] = STATE(14),
[sym_and] = STATE(14),
[sym_or] = STATE(14),
[sym_equal] = STATE(14),
[sym_not_equal] = STATE(14),
[sym_parenthesized] = STATE(14),
[sym_identifier] = ACTIONS(3),
[anon_sym_BANG] = ACTIONS(5),
[anon_sym_LPAREN] = ACTIONS(7),
},
[4] =
{
[sym__expression] = STATE(11),
[sym_not] = STATE(11),
[sym_and] = STATE(11),
[sym_or] = STATE(11),
[sym_equal] = STATE(11),
[sym_not_equal] = STATE(11),
[sym_parenthesized] = STATE(11),
[sym_identifier] = ACTIONS(3),
[anon_sym_BANG] = ACTIONS(5),
[anon_sym_LPAREN] = ACTIONS(7),
},
[5] =
{
[sym__expression] = STATE(12),
[sym_not] = STATE(12),
[sym_and] = STATE(12),
[sym_or] = STATE(12),
[sym_equal] = STATE(12),
[sym_not_equal] = STATE(12),
[sym_parenthesized] = STATE(12),
[sym_identifier] = ACTIONS(3),
[anon_sym_BANG] = ACTIONS(5),
[anon_sym_LPAREN] = ACTIONS(7),
},
};
static const uint16_t ts_small_parse_table[] = {
[0] = 3,
ACTIONS(11),
1,
anon_sym_EQ_EQ,
ACTIONS(13),
1,
anon_sym_BANG_EQ,
ACTIONS(9),
4,
ts_builtin_sym_end,
anon_sym_AMP_AMP,
anon_sym_PIPE_PIPE,
anon_sym_RPAREN,
[13] = 1,
ACTIONS(15),
4,
ts_builtin_sym_end,
anon_sym_AMP_AMP,
anon_sym_PIPE_PIPE,
anon_sym_RPAREN,
[20] = 1,
ACTIONS(17),
4,
ts_builtin_sym_end,
anon_sym_AMP_AMP,
anon_sym_PIPE_PIPE,
anon_sym_RPAREN,
[27] = 1,
ACTIONS(19),
4,
ts_builtin_sym_end,
anon_sym_AMP_AMP,
anon_sym_PIPE_PIPE,
anon_sym_RPAREN,
[34] = 1,
ACTIONS(21),
4,
ts_builtin_sym_end,
anon_sym_AMP_AMP,
anon_sym_PIPE_PIPE,
anon_sym_RPAREN,
[41] = 1,
ACTIONS(23),
4,
ts_builtin_sym_end,
anon_sym_AMP_AMP,
anon_sym_PIPE_PIPE,
anon_sym_RPAREN,
[48] = 2,
ACTIONS(27),
1,
anon_sym_AMP_AMP,
ACTIONS(25),
3,
ts_builtin_sym_end,
anon_sym_PIPE_PIPE,
anon_sym_RPAREN,
[57] = 3,
ACTIONS(27),
1,
anon_sym_AMP_AMP,
ACTIONS(29),
1,
ts_builtin_sym_end,
ACTIONS(31),
1,
anon_sym_PIPE_PIPE,
[67] = 3,
ACTIONS(27),
1,
anon_sym_AMP_AMP,
ACTIONS(31),
1,
anon_sym_PIPE_PIPE,
ACTIONS(33),
1,
anon_sym_RPAREN,
[77] = 1,
ACTIONS(35),
1,
ts_builtin_sym_end,
[81] = 1,
ACTIONS(37),
1,
sym_identifier,
[85] = 1,
ACTIONS(39),
1,
sym_identifier,
};
static const uint32_t ts_small_parse_table_map[] = {
[SMALL_STATE(6)] = 0, [SMALL_STATE(7)] = 13, [SMALL_STATE(8)] = 20,
[SMALL_STATE(9)] = 27, [SMALL_STATE(10)] = 34, [SMALL_STATE(11)] = 41,
[SMALL_STATE(12)] = 48, [SMALL_STATE(13)] = 57, [SMALL_STATE(14)] = 67,
[SMALL_STATE(15)] = 77, [SMALL_STATE(16)] = 81, [SMALL_STATE(17)] = 85,
};
static const TSParseActionEntry ts_parse_actions[] = {
[0] = {.entry = {.count = 0, .reusable = false}},
[1] = {.entry = {.count = 1, .reusable = false}},
RECOVER(),
[3] = {.entry = {.count = 1, .reusable = true}},
SHIFT(6),
[5] = {.entry = {.count = 1, .reusable = true}},
SHIFT(2),
[7] = {.entry = {.count = 1, .reusable = true}},
SHIFT(3),
[9] = {.entry = {.count = 1, .reusable = true}},
REDUCE(sym__expression, 1),
[11] = {.entry = {.count = 1, .reusable = true}},
SHIFT(16),
[13] = {.entry = {.count = 1, .reusable = true}},
SHIFT(17),
[15] = {.entry = {.count = 1, .reusable = true}},
REDUCE(sym_not, 2, .production_id = 1),
[17] = {.entry = {.count = 1, .reusable = true}},
REDUCE(sym_equal, 3, .production_id = 2),
[19] = {.entry = {.count = 1, .reusable = true}},
REDUCE(sym_not_equal, 3, .production_id = 2),
[21] = {.entry = {.count = 1, .reusable = true}},
REDUCE(sym_parenthesized, 3, .production_id = 1),
[23] = {.entry = {.count = 1, .reusable = true}},
REDUCE(sym_and, 3, .production_id = 2),
[25] = {.entry = {.count = 1, .reusable = true}},
REDUCE(sym_or, 3, .production_id = 2),
[27] = {.entry = {.count = 1, .reusable = true}},
SHIFT(4),
[29] = {.entry = {.count = 1, .reusable = true}},
REDUCE(sym_source, 1),
[31] = {.entry = {.count = 1, .reusable = true}},
SHIFT(5),
[33] = {.entry = {.count = 1, .reusable = true}},
SHIFT(10),
[35] = {.entry = {.count = 1, .reusable = true}},
ACCEPT_INPUT(),
[37] = {.entry = {.count = 1, .reusable = true}},
SHIFT(8),
[39] = {.entry = {.count = 1, .reusable = true}},
SHIFT(9),
};
#ifdef __cplusplus
extern "C" {
#endif
#ifdef _WIN32
#define extern __declspec(dllexport)
#endif
extern const TSLanguage *tree_sitter_context_predicate(void) {
static const TSLanguage language = {
.version = LANGUAGE_VERSION,
.symbol_count = SYMBOL_COUNT,
.alias_count = ALIAS_COUNT,
.token_count = TOKEN_COUNT,
.external_token_count = EXTERNAL_TOKEN_COUNT,
.state_count = STATE_COUNT,
.large_state_count = LARGE_STATE_COUNT,
.production_id_count = PRODUCTION_ID_COUNT,
.field_count = FIELD_COUNT,
.max_alias_sequence_length = MAX_ALIAS_SEQUENCE_LENGTH,
.parse_table = &ts_parse_table[0][0],
.small_parse_table = ts_small_parse_table,
.small_parse_table_map = ts_small_parse_table_map,
.parse_actions = ts_parse_actions,
.symbol_names = ts_symbol_names,
.field_names = ts_field_names,
.field_map_slices = ts_field_map_slices,
.field_map_entries = ts_field_map_entries,
.symbol_metadata = ts_symbol_metadata,
.public_symbol_map = ts_symbol_map,
.alias_map = ts_non_terminal_alias_map,
.alias_sequences = &ts_alias_sequences[0][0],
.lex_modes = ts_lex_modes,
.lex_fn = ts_lex,
};
return &language;
}
#ifdef __cplusplus
}
#endif

223
crates/gpui/grammars/context-predicate/src/tree_sitter/parser.h
View file

@ -1,223 +0,0 @@
#ifndef TREE_SITTER_PARSER_H_
#define TREE_SITTER_PARSER_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#define ts_builtin_sym_error ((TSSymbol)-1)
#define ts_builtin_sym_end 0
#define TREE_SITTER_SERIALIZATION_BUFFER_SIZE 1024
typedef uint16_t TSStateId;
#ifndef TREE_SITTER_API_H_
typedef uint16_t TSSymbol;
typedef uint16_t TSFieldId;
typedef struct TSLanguage TSLanguage;
#endif
typedef struct {
TSFieldId field_id;
uint8_t child_index;
bool inherited;
} TSFieldMapEntry;
typedef struct {
uint16_t index;
uint16_t length;
} TSFieldMapSlice;
typedef struct {
bool visible;
bool named;
bool supertype;
} TSSymbolMetadata;
typedef struct TSLexer TSLexer;
struct TSLexer {
int32_t lookahead;
TSSymbol result_symbol;
void (*advance)(TSLexer *, bool);
void (*mark_end)(TSLexer *);
uint32_t (*get_column)(TSLexer *);
bool (*is_at_included_range_start)(const TSLexer *);
bool (*eof)(const TSLexer *);
};
typedef enum {
TSParseActionTypeShift,
TSParseActionTypeReduce,
TSParseActionTypeAccept,
TSParseActionTypeRecover,
} TSParseActionType;
typedef union {
struct {
uint8_t type;
TSStateId state;
bool extra;
bool repetition;
} shift;
struct {
uint8_t type;
uint8_t child_count;
TSSymbol symbol;
int16_t dynamic_precedence;
uint16_t production_id;
} reduce;
uint8_t type;
} TSParseAction;
typedef struct {
uint16_t lex_state;
uint16_t external_lex_state;
} TSLexMode;
typedef union {
TSParseAction action;
struct {
uint8_t count;
bool reusable;
} entry;
} TSParseActionEntry;
struct TSLanguage {
uint32_t version;
uint32_t symbol_count;
uint32_t alias_count;
uint32_t token_count;
uint32_t external_token_count;
uint32_t state_count;
uint32_t large_state_count;
uint32_t production_id_count;
uint32_t field_count;
uint16_t max_alias_sequence_length;
const uint16_t *parse_table;
const uint16_t *small_parse_table;
const uint32_t *small_parse_table_map;
const TSParseActionEntry *parse_actions;
const char * const *symbol_names;
const char * const *field_names;
const TSFieldMapSlice *field_map_slices;
const TSFieldMapEntry *field_map_entries;
const TSSymbolMetadata *symbol_metadata;
const TSSymbol *public_symbol_map;
const uint16_t *alias_map;
const TSSymbol *alias_sequences;
const TSLexMode *lex_modes;
bool (*lex_fn)(TSLexer *, TSStateId);
bool (*keyword_lex_fn)(TSLexer *, TSStateId);
TSSymbol keyword_capture_token;
struct {
const bool *states;
const TSSymbol *symbol_map;
void *(*create)(void);
void (*destroy)(void *);
bool (*scan)(void *, TSLexer *, const bool *symbol_whitelist);
unsigned (*serialize)(void *, char *);
void (*deserialize)(void *, const char *, unsigned);
} external_scanner;
};
/*
* Lexer Macros
*/
#define START_LEXER() \
bool result = false; \
bool skip = false; \
bool eof = false; \
int32_t lookahead; \
goto start; \
next_state: \
lexer->advance(lexer, skip); \
start: \
skip = false; \
lookahead = lexer->lookahead;
#define ADVANCE(state_value) \
{ \
state = state_value; \
goto next_state; \
}
#define SKIP(state_value) \
{ \
skip = true; \
state = state_value; \
goto next_state; \
}
#define ACCEPT_TOKEN(symbol_value) \
result = true; \
lexer->result_symbol = symbol_value; \
lexer->mark_end(lexer);
#define END_STATE() return result;
/*
* Parse Table Macros
*/
#define SMALL_STATE(id) id - LARGE_STATE_COUNT
#define STATE(id) id
#define ACTIONS(id) id
#define SHIFT(state_value) \
{{ \
.shift = { \
.type = TSParseActionTypeShift, \
.state = state_value \
} \
}}
#define SHIFT_REPEAT(state_value) \
{{ \
.shift = { \
.type = TSParseActionTypeShift, \
.state = state_value, \
.repetition = true \
} \
}}
#define SHIFT_EXTRA() \
{{ \
.shift = { \
.type = TSParseActionTypeShift, \
.extra = true \
} \
}}
#define REDUCE(symbol_val, child_count_val, ...) \
{{ \
.reduce = { \
.type = TSParseActionTypeReduce, \
.symbol = symbol_val, \
.child_count = child_count_val, \
__VA_ARGS__ \
}, \
}}
#define RECOVER() \
{{ \
.type = TSParseActionTypeRecover \
}}
#define ACCEPT_INPUT() \
{{ \
.type = TSParseActionTypeAccept \
}}
#ifdef __cplusplus
}
#endif
#endif // TREE_SITTER_PARSER_H_

311
crates/gpui/src/keymap_matcher/keymap_context.rs
View file

@ -1,11 +1,5 @@
use anyhow::anyhow; use anyhow::{anyhow, Result};
use collections::{HashMap, HashSet}; use collections::{HashMap, HashSet};
use tree_sitter::{Language, Node, Parser};
extern "C" {
fn tree_sitter_context_predicate() -> Language;
}
#[derive(Clone, Debug, Default, Eq, PartialEq)] #[derive(Clone, Debug, Default, Eq, PartialEq)]
pub struct KeymapContext { pub struct KeymapContext {
@ -35,70 +29,13 @@ pub enum KeymapContextPredicate {
} }
impl KeymapContextPredicate { impl KeymapContextPredicate {
pub fn parse(source: &str) -> anyhow::Result<Self> { pub fn parse(source: &str) -> Result<Self> {
let mut parser = Parser::new(); let source = Self::skip_whitespace(source);
let language = unsafe { tree_sitter_context_predicate() }; let (predicate, rest) = Self::parse_expr(source, 0)?;
parser.set_language(language).unwrap(); if let Some(next) = rest.chars().next() {
let source = source.as_bytes(); Err(anyhow!("unexpected character {next:?}"))
let tree = parser.parse(source, None).unwrap(); } else {
Self::from_node(tree.root_node(), source) Ok(predicate)
}
fn from_node(node: Node, source: &[u8]) -> anyhow::Result<Self> {
let parse_error = "error parsing context predicate";
let kind = node.kind();
match kind {
"source" => Self::from_node(node.child(0).ok_or_else(|| anyhow!(parse_error))?, source),
"identifier" => Ok(Self::Identifier(node.utf8_text(source)?.into())),
"not" => {
let child = Self::from_node(
node.child_by_field_name("expression")
.ok_or_else(|| anyhow!(parse_error))?,
source,
)?;
Ok(Self::Not(Box::new(child)))
}
"and" | "or" => {
let left = Box::new(Self::from_node(
node.child_by_field_name("left")
.ok_or_else(|| anyhow!(parse_error))?,
source,
)?);
let right = Box::new(Self::from_node(
node.child_by_field_name("right")
.ok_or_else(|| anyhow!(parse_error))?,
source,
)?);
if kind == "and" {
Ok(Self::And(left, right))
} else {
Ok(Self::Or(left, right))
}
}
"equal" | "not_equal" => {
let left = node
.child_by_field_name("left")
.ok_or_else(|| anyhow!(parse_error))?
.utf8_text(source)?
.into();
let right = node
.child_by_field_name("right")
.ok_or_else(|| anyhow!(parse_error))?
.utf8_text(source)?
.into();
if kind == "equal" {
Ok(Self::Equal(left, right))
} else {
Ok(Self::NotEqual(left, right))
}
}
"parenthesized" => Self::from_node(
node.child_by_field_name("expression")
.ok_or_else(|| anyhow!(parse_error))?,
source,
),
_ => Err(anyhow!(parse_error)),
} }
} }
@ -120,4 +57,236 @@ impl KeymapContextPredicate {
Self::Or(left, right) => left.eval(context) || right.eval(context), Self::Or(left, right) => left.eval(context) || right.eval(context),
} }
} }
fn parse_expr(
mut source: &str,
min_precedence: u32,
) -> anyhow::Result<(KeymapContextPredicate, &str)> {
type Op =
fn(KeymapContextPredicate, KeymapContextPredicate) -> Result<KeymapContextPredicate>;
let (mut predicate, rest) = Self::parse_primary(source)?;
source = rest;
'parse: loop {
for (operator, precedence, constructor) in [
("&&", PRECEDENCE_AND, KeymapContextPredicate::new_and as Op),
("||", PRECEDENCE_OR, KeymapContextPredicate::new_or as Op),
("==", PRECEDENCE_EQ, KeymapContextPredicate::new_eq as Op),
("!=", PRECEDENCE_EQ, KeymapContextPredicate::new_neq as Op),
] {
if source.starts_with(operator) && precedence >= min_precedence {
source = Self::skip_whitespace(&source[operator.len()..]);
let (right, rest) = Self::parse_expr(source, precedence + 1)?;
predicate = constructor(predicate, right)?;
source = rest;
continue 'parse;
}
}
break;
}
Ok((predicate, source))
}
fn parse_primary(mut source: &str) -> anyhow::Result<(KeymapContextPredicate, &str)> {
let next = source
.chars()
.next()
.ok_or_else(|| anyhow!("unexpected eof"))?;
match next {
'(' => {
source = Self::skip_whitespace(&source[1..]);
let (predicate, rest) = Self::parse_expr(source, 0)?;
if rest.starts_with(')') {
source = Self::skip_whitespace(&rest[1..]);
Ok((predicate, source))
} else {
Err(anyhow!("expected a ')'"))
}
}
'!' => {
let source = Self::skip_whitespace(&source[1..]);
let (predicate, source) = Self::parse_expr(&source, PRECEDENCE_NOT)?;
Ok((KeymapContextPredicate::Not(Box::new(predicate)), source))
}
_ if next.is_alphanumeric() || next == '_' => {
let len = source
.find(|c: char| !(c.is_alphanumeric() || c == '_'))
.unwrap_or(source.len());
let (identifier, rest) = source.split_at(len);
source = Self::skip_whitespace(rest);
Ok((
KeymapContextPredicate::Identifier(identifier.into()),
source,
))
}
_ => Err(anyhow!("unexpected character {next:?}")),
}
}
fn skip_whitespace(source: &str) -> &str {
let len = source
.find(|c: char| !c.is_whitespace())
.unwrap_or(source.len());
&source[len..]
}
fn new_or(self, other: Self) -> Result<Self> {
Ok(Self::Or(Box::new(self), Box::new(other)))
}
fn new_and(self, other: Self) -> Result<Self> {
Ok(Self::And(Box::new(self), Box::new(other)))
}
fn new_eq(self, other: Self) -> Result<Self> {
if let (Self::Identifier(left), Self::Identifier(right)) = (self, other) {
Ok(Self::Equal(left, right))
} else {
Err(anyhow!("operands must be identifiers"))
}
}
fn new_neq(self, other: Self) -> Result<Self> {
if let (Self::Identifier(left), Self::Identifier(right)) = (self, other) {
Ok(Self::NotEqual(left, right))
} else {
Err(anyhow!("operands must be identifiers"))
}
}
}
const PRECEDENCE_OR: u32 = 1;
const PRECEDENCE_AND: u32 = 2;
const PRECEDENCE_EQ: u32 = 3;
const PRECEDENCE_NOT: u32 = 4;
#[cfg(test)]
mod tests {
use super::KeymapContextPredicate::{self, *};
#[test]
fn test_parse_identifiers() {
// Identifiers
assert_eq!(
KeymapContextPredicate::parse("abc12").unwrap(),
Identifier("abc12".into())
);
assert_eq!(
KeymapContextPredicate::parse("_1a").unwrap(),
Identifier("_1a".into())
);
}
#[test]
fn test_parse_negations() {
assert_eq!(
KeymapContextPredicate::parse("!abc").unwrap(),
Not(Box::new(Identifier("abc".into())))
);
assert_eq!(
KeymapContextPredicate::parse(" ! ! abc").unwrap(),
Not(Box::new(Not(Box::new(Identifier("abc".into())))))
);
}
#[test]
fn test_parse_equality_operators() {
assert_eq!(
KeymapContextPredicate::parse("a == b").unwrap(),
Equal("a".into(), "b".into())
);
assert_eq!(
KeymapContextPredicate::parse("c!=d").unwrap(),
NotEqual("c".into(), "d".into())
);
assert_eq!(
KeymapContextPredicate::parse("c == !d")
.unwrap_err()
.to_string(),
"operands must be identifiers"
);
}
#[test]
fn test_parse_boolean_operators() {
assert_eq!(
KeymapContextPredicate::parse("a || b").unwrap(),
Or(
Box::new(Identifier("a".into())),
Box::new(Identifier("b".into()))
)
);
assert_eq!(
KeymapContextPredicate::parse("a || !b && c").unwrap(),
Or(
Box::new(Identifier("a".into())),
Box::new(And(
Box::new(Not(Box::new(Identifier("b".into())))),
Box::new(Identifier("c".into()))
))
)
);
assert_eq!(
KeymapContextPredicate::parse("a && b || c&&d").unwrap(),
Or(
Box::new(And(
Box::new(Identifier("a".into())),
Box::new(Identifier("b".into()))
)),
Box::new(And(
Box::new(Identifier("c".into())),
Box::new(Identifier("d".into()))
))
)
);
assert_eq!(
KeymapContextPredicate::parse("a == b && c || d == e && f").unwrap(),
Or(
Box::new(And(
Box::new(Equal("a".into(), "b".into())),
Box::new(Identifier("c".into()))
)),
Box::new(And(
Box::new(Equal("d".into(), "e".into())),
Box::new(Identifier("f".into()))
))
)
);
assert_eq!(
KeymapContextPredicate::parse("a && b && c && d").unwrap(),
And(
Box::new(And(
Box::new(And(
Box::new(Identifier("a".into())),
Box::new(Identifier("b".into()))
)),
Box::new(Identifier("c".into())),
)),
Box::new(Identifier("d".into()))
),
);
}
#[test]
fn test_parse_parenthesized_expressions() {
assert_eq!(
KeymapContextPredicate::parse("a && (b == c || d != e)").unwrap(),
And(
Box::new(Identifier("a".into())),
Box::new(Or(
Box::new(Equal("b".into(), "c".into())),
Box::new(NotEqual("d".into(), "e".into())),
)),
),
);
assert_eq!(
KeymapContextPredicate::parse(" ( a || b ) ").unwrap(),
Or(
Box::new(Identifier("a".into())),
Box::new(Identifier("b".into())),
)
);
}
} }