Tree-sitter grammar

.github/workflows/tree-sitter.yaml

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+name: tree-sitter grammar
+
+on: [push]
+
+env:
+  NODE_VERSION: "16.x"
+
+jobs:
+  build-and-test:
+    name: Compile and test grammar
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@master
+      - name: Use Node.js ${{ env.NODE_VERSION }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+      - name: npm install and compile
+        run: |
+          cd tree-sitter-zcbuildout
+          npm install
+          npm run test

tree-sitter-zcbuildout/Cargo.toml

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+[package]
+name = "tree-sitter-zcbuildout"
+description = "zcbuildout grammar for the tree-sitter parsing library"
+version = "0.0.1"
+keywords = ["incremental", "parsing", "zcbuildout"]
+categories = ["parsing", "text-editors"]
+repository = "https://github.com/tree-sitter/tree-sitter-zcbuildout"
+edition = "2018"
+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"

tree-sitter-zcbuildout/binding.gyp

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+{
+  "targets": [
+    {
+      "target_name": "tree_sitter_zcbuildout_binding",
+      "include_dirs": [
+        "<!(node -e \"require('nan')\")",
+        "src"
+      ],
+      "sources": [
+        "bindings/node/binding.cc",
+        "src/parser.c",
+        # If your language uses an external scanner, add it here.
+      ],
+      "cflags_c": [
+        "-std=c99",
+      ]
+    }
+  ]
+}

tree-sitter-zcbuildout/bindings/node/binding.cc

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+#include "tree_sitter/parser.h"
+#include <node.h>
+#include "nan.h"
+
+using namespace v8;
+
+extern "C" TSLanguage * tree_sitter_zcbuildout();
+
+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_zcbuildout());
+
+  Nan::Set(instance, Nan::New("name").ToLocalChecked(), Nan::New("zcbuildout").ToLocalChecked());
+  Nan::Set(module, Nan::New("exports").ToLocalChecked(), instance);
+}
+
+NODE_MODULE(tree_sitter_zcbuildout_binding, Init)
+
+}  // namespace

tree-sitter-zcbuildout/bindings/node/index.js

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

tree-sitter-zcbuildout/bindings/rust/build.rs

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+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());
+    */
+}

tree-sitter-zcbuildout/bindings/rust/lib.rs

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+//! This crate provides zcbuildout 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_zcbuildout::language()).expect("Error loading zcbuildout 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_zcbuildout() -> 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_zcbuildout() }
+}
+
+/// 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 zcbuildout language");
+    }
+}

tree-sitter-zcbuildout/grammar.js

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+module.exports = grammar({
+  name: "zcbuildout",
+
+  extras: ($) => [
+    /[ \t]+\n*/, // Ignore empty lines.
+  ],
+
+  rules: {
+    profile: ($) =>
+      seq(/[\n]*/, optional(repeat($.comment)), repeat(seq($.section))),
+
+    section: ($) =>
+      prec.left(
+        seq($._section_header, /[\n]+/, repeat(choice($.option, $.comment)))
+      ),
+
+    _section_header: ($) =>
+      seq(
+        "[",
+        field("section_name", $.section_name),
+        optional(seq(/:/, field("section_condition", $.section_condition))),
+        "]"
+      ),
+    section_name: ($) => /[^\[\]:\n]+/,
+    section_condition: ($) => /[^\[\]\n]+/,
+
+    option: ($) => seq($.option_name, "=", /\s*/, $.option_value),
+
+    option_name: ($) => /[^#;=\s\[]+/,
+    option_value: ($) =>
+      choice(
+        seq(
+          $._option_value_mono_line,
+          prec.left(1, repeat($._option_value_multi_line))
+        ),
+        seq(/\n/, prec.left(2, repeat1($._option_value_multi_line)))
+      ),
+    _option_value_mono_line: ($) => prec.left(1, seq($._option_text, /\n+/)),
+    _option_value_multi_line: ($) =>
+      prec.left(2, repeat1(seq(/\s+/, $._option_text, /\n+/))),
+
+    _option_text: ($) =>
+      repeat1(choice($.option_text, $.option_with_reference)),
+    option_text: ($) => /([^\n]+\$\$[^\n]*|[^\n]*\$\$[^\n]+|[^\$\n]+)+/,
+
+    option_with_reference: ($) =>
+      seq(
+        "${",
+        field("referenced_section", optional($.referenced_section)),
+        ":",
+        field("referenced_option", $.referenced_option),
+        "}"
+      ),
+    referenced_section: ($) => /[^:\}\n]+/,
+    referenced_option: ($) => /[^\n\}]+/,
+
+    comment: ($) => token(prec(-10, /[#;]+.*\n+/)),
+  },
+});

tree-sitter-zcbuildout/package.json

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+{
+  "name": "tree-sitter-zcbuildout",
+  "version": "0.0.0",
+  "description": "Tree sitter grammar for zc.buildout profiles",
+  "main": "bindings/node",
+  "scripts": {
+    "test": "tree-sitter test"
+  },
+  "author": "Jérome Perrin (based on tree-sitter-ini from Justin M. Keyes)",
+  "license": "MIT",
+  "dependencies": {
+    "nan": "^2.15.0"
+  },
+  "devDependencies": {
+    "tree-sitter-cli": "^0.20.6"
+  }
+}