feat: add solidity treesitter support (#273)

* Add query for solidity

* Add solidity to readme treesitter supported list

* Add method in library

* 修改方法图标显示

* interface包含function

* Reformat solidity queries and add tests to solidity

---------

Co-authored-by: lightnlightning <lightning004@outlook.com>
Co-authored-by: lightnlightning <116029224+lightnlightning@users.noreply.github.com>

README.md

@@ -160,6 +160,7 @@ In addition, you will need to have either Treesitter or a working LSP client. Yo
 - ruby
 - rust
 - scala
+- solidity
 - teal
 - tsx
 - typescript

queries/solidity/aerial.scm

@@ -0,0 +1,43 @@
+(contract_declaration (_
+  (function_definition
+    name: (identifier) @name
+    (#set! "kind" "Method")
+    ) @type))
+
+(library_declaration (_
+  (function_definition
+    name: (identifier) @name
+    (#set! "kind" "Function")
+    ) @type))
+
+(interface_declaration (_
+  (function_definition
+    name: (identifier) @name
+    (#set! "kind" "Function")
+    ) @type))
+
+(source_file
+  (function_definition
+    name: (identifier) @name
+    (#set! "kind" "Function")
+    ) @type)
+
+(contract_declaration
+  name: (identifier) @name
+  (#set! "kind" "Class")
+  ) @type
+
+(interface_declaration
+  name: (identifier) @name
+  (#set! "kind" "Interface")
+  ) @type
+
+(library_declaration
+  name: (identifier) @name
+  (#set! "kind" "Module")
+  ) @type
+
+(event_definition 
+  name: (identifier) @name
+  (#set! "kind" "Function")
+  ) @type

tests/treesitter/solidity_spec.lua

@@ -0,0 +1,77 @@
+local util = require("tests.test_util")
+
+describe("treesitter solidity", function()
+  it("parses all symbols correctly", function()
+    util.test_file_symbols("treesitter", "./tests/treesitter/solidity_test.sol", {
+      {
+        kind = "Module",
+        name = "a",
+        level = 0,
+        lnum = 5,
+        col = 0,
+        end_lnum = 9,
+        end_col = 1,
+        children = {
+          {
+            kind = "Function",
+            name = "f",
+            level = 1,
+            lnum = 6,
+            col = 4,
+            end_lnum = 8,
+            end_col = 5,
+          },
+        },
+      },
+      {
+        kind = "Class",
+        name = "A",
+        level = 0,
+        lnum = 11,
+        col = 0,
+        end_lnum = 16,
+        end_col = 1,
+        children = {
+          {
+            kind = "Function",
+            name = "Log",
+            level = 1,
+            lnum = 12,
+            col = 4,
+            end_lnum = 12,
+            end_col = 54,
+          },
+          {
+            kind = "Method",
+            name = "m",
+            level = 1,
+            lnum = 13,
+            col = 4,
+            end_lnum = 15,
+            end_col = 5,
+          },
+        },
+      },
+      {
+        kind = "Interface",
+        name = "I",
+        level = 0,
+        lnum = 18,
+        col = 0,
+        end_lnum = 20,
+        end_col = 1,
+        children = {
+          {
+            kind = "Function",
+            name = "f",
+            level = 1,
+            lnum = 19,
+            col = 4,
+            end_lnum = 19,
+            end_col = 17,
+          },
+        },
+      },
+    })
+  end)
+end)

tests/treesitter/solidity_test.sol

@@ -0,0 +1,20 @@
+// Credit for this file goes to Gonçalo Sá and Federico Bond: https://github.com/ConsenSys/solidity-parser-antlr/commits/master/test/test.sol
+// I take part of that file
+pragma solidity >=0.5.0 <0.7.0;
+
+library a {
+    function f() {
+        uint x = 3 < 0 ? 2 > 1 ? 2 : 1 : 7 > 2 ? 7 : 6;
+    }
+}
+
+contract A {
+    event Log(address indexed sender, string message);
+    function m() {
+        uint x = 3 < 0 ? 2 > 1 ? 2 : 1 : 7 > 2 ? 7 : 6;
+    }
+}
+
+interface I {
+    function f();
+}