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local t = require('test.testutil')
local n = require('test.functional.testnvim')()
local clear = n.clear
local eq = t.eq
local exec_lua = n.exec_lua
local insert = n.insert
local assert_alive = n.assert_alive
before_each(clear)
local function lua_eval(lua_expr)
return exec_lua('return ' .. lua_expr)
end
describe('treesitter node API', function()
clear()
it('double free tree', function()
insert('F')
exec_lua(function()
vim.treesitter.start(0, 'lua')
vim.treesitter.get_parser(0):parse()
vim.treesitter.get_node():tree()
vim.treesitter.get_node():tree()
collectgarbage()
end)
assert_alive()
end)
it('double free tree 2', function()
exec_lua(function()
local parser = vim.treesitter.get_parser(0, 'c')
local x = parser:parse()[1]:root():tree()
vim.api.nvim_buf_set_text(0, 0, 0, 0, 0, { 'y' })
parser:parse()
vim.api.nvim_buf_set_text(0, 0, 0, 0, 1, { 'z' })
parser:parse()
collectgarbage()
x:root()
end)
assert_alive()
end)
it('get_node() with lang given', function()
-- this buffer doesn't have filetype set!
insert('local foo = function() end')
exec_lua(function()
vim.treesitter.get_parser(0, 'lua'):parse()
_G.node = vim.treesitter.get_node({
bufnr = 0,
pos = { 0, 6 }, -- on "foo"
lang = 'lua',
})
end)
eq('foo', lua_eval('vim.treesitter.get_node_text(node, 0)'))
eq('identifier', lua_eval('node:type()'))
end)
it('get_node() with anonymous nodes included', function()
insert([[print('test')]])
exec_lua(function()
_G.parser = vim.treesitter.get_parser(0, 'lua')
_G.tree = _G.parser:parse()[1]
_G.node = vim.treesitter.get_node({
bufnr = 0,
pos = { 0, 6 }, -- on the first apostrophe
include_anonymous = true,
})
end)
eq("'", lua_eval('node:type()'))
eq(false, lua_eval('node:named()'))
end)
it('can move between siblings', function()
insert([[
int main(int x, int y, int z) {
return x + y * z
}
]])
exec_lua(function()
local parser = vim.treesitter.get_parser(0, 'c')
local tree = parser:parse()[1]
_G.root = tree:root()
vim.treesitter.language.inspect('c')
function _G.node_text(node)
return vim.treesitter.get_node_text(node, 0)
end
end)
exec_lua 'node = root:descendant_for_range(0, 11, 0, 16)'
eq('int x', lua_eval('node_text(node)'))
exec_lua 'node = node:next_sibling()'
eq(',', lua_eval('node_text(node)'))
exec_lua 'node = node:next_sibling()'
eq('int y', lua_eval('node_text(node)'))
exec_lua 'node = node:prev_sibling()'
eq(',', lua_eval('node_text(node)'))
exec_lua 'node = node:prev_sibling()'
eq('int x', lua_eval('node_text(node)'))
exec_lua 'node = node:next_named_sibling()'
eq('int y', lua_eval('node_text(node)'))
exec_lua 'node = node:prev_named_sibling()'
eq('int x', lua_eval('node_text(node)'))
end)
it('can retrieve the children of a node', function()
insert([[
int main() {
int x = 3;
}]])
local len = exec_lua(function()
local tree = vim.treesitter.get_parser(0, 'c'):parse()[1]
local node = assert(tree:root():child(0))
_G.children = node:named_children()
return #_G.children
end)
eq(3, len)
eq('<node compound_statement>', lua_eval('tostring(children[3])'))
end)
it('can retrieve the tree root given a node', function()
insert([[
int main() {
int x = 3;
}]])
exec_lua(function()
local tree = vim.treesitter.get_parser(0, 'c'):parse()[1]
_G.root = tree:root()
_G.node = _G.root:child(0):child(2)
end)
eq(lua_eval('tostring(root)'), lua_eval('tostring(node:root())'))
end)
it('can compute the byte length of a node', function()
insert([[
int main() {
int x = 3;
}]])
exec_lua(function()
local tree = vim.treesitter.get_parser(0, 'c'):parse()[1]
_G.root = tree:root()
_G.child = _G.root:child(0):child(0)
end)
eq(28, lua_eval('root:byte_length()'))
eq(3, lua_eval('child:byte_length()'))
end)
it('child_with_descendant() works', function()
insert([[
int main() {
int x = 3;
}]])
exec_lua(function()
local tree = vim.treesitter.get_parser(0, 'c'):parse()[1]
_G.root = assert(tree:root())
_G.main = assert(_G.root:child(0))
_G.body = assert(_G.main:child(2))
_G.statement = assert(_G.body:child(1))
_G.declarator = assert(_G.statement:child(1))
_G.value = assert(_G.declarator:child(1))
end)
eq(lua_eval('main:type()'), lua_eval('root:child_with_descendant(value):type()'))
eq(lua_eval('body:type()'), lua_eval('main:child_with_descendant(value):type()'))
eq(lua_eval('statement:type()'), lua_eval('body:child_with_descendant(value):type()'))
eq(lua_eval('declarator:type()'), lua_eval('statement:child_with_descendant(value):type()'))
eq(lua_eval('value:type()'), lua_eval('declarator:child_with_descendant(value):type()'))
eq(vim.NIL, lua_eval('value:child_with_descendant(value)'))
end)
end)
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