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yue = require "yue"
describe "yue.to_ast", ->
it "should return AST with end position for simple expression", ->
ast = yue.to_ast "x = 1"
assert.is_not_nil ast
-- ast format: [name, begin_line, begin_col, end_line, end_col, ...children]
assert.same ast[1], "File"
assert.same ast[2], 1 -- begin line
assert.same ast[3], 1 -- begin col
assert.is_number ast[4] -- end line
assert.is_number ast[5] -- end col
it "should have correct end position for leaf nodes", ->
ast = yue.to_ast "1"
assert.is_not_nil ast
-- Leaf node with no children should have format: [name, begin_line, begin_col, end_line, end_col, value]
assert.same ast[1], "File"
assert.same ast[2], 1
assert.same ast[3], 1
assert.is_number ast[4]
assert.is_number ast[5]
it "should have end position for multi-line code", ->
code = [[
x = 1
y = 2]]
ast = yue.to_ast code
assert.is_not_nil ast
assert.same ast[1], "File"
assert.same ast[2], 1
assert.same ast[3], 1
-- End position should be on line 2
assert.is_true ast[4] >= 2
it "should have end position for function definition", ->
code = [[
add = (a, b) ->
a + b]]
ast = yue.to_ast code
assert.is_not_nil ast
assert.same ast[1], "File"
assert.same ast[2], 1
assert.same ast[3], 1
assert.is_number ast[4]
assert.is_number ast[5]
it "should have end position for table literal", ->
ast = yue.to_ast "{a: 1, b: 2}"
assert.is_not_nil ast
assert.same ast[1], "File"
assert.same ast[2], 1
assert.same ast[3], 1
assert.is_number ast[4]
assert.is_number ast[5]
it "should have end position for class definition", ->
code = [[
class Person
new: (@name) =>
getName: => @name]]
ast = yue.to_ast code
assert.is_not_nil ast
assert.same ast[1], "File"
assert.same ast[2], 1
assert.same ast[3], 1
assert.is_true ast[4] >= 3
it "should return nil and error message for invalid syntax", ->
ast, err = yue.to_ast "if then else"
assert.is_nil ast
assert.is_string err
it "should support flatten level parameter", ->
ast = yue.to_ast "x = 1", 0
assert.is_not_nil ast
assert.same ast[1], "File"
assert.is_number ast[4]
assert.is_number ast[5]
it "should have end position in nested structures", ->
code = "x = [i for i = 1, 10]"
ast = yue.to_ast code
assert.is_not_nil ast
assert.same ast[1], "File"
assert.same ast[2], 1
assert.same ast[3], 1
assert.is_number ast[4]
assert.is_number ast[5]
-- End column should reflect the end of the expression
assert.is_true ast[5] > 1
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