completion_env

Autocomplete helper: determine context of the token to be autocompleted

Adapted from the stata_kernel version (omitting mata-specific stuff).

Note the corner cases discussed here, but the commented out test cases below are not yet handled:

• github.com/kylebarron/language-stata/issues/90
• statalist.org/forums/forum/general-stata-discussion/general/1448244

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CompletionEnv

def CompletionEnv(
    
):

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Env

def Env(
    args:VAR_POSITIONAL, kwds:VAR_KEYWORD
):

Enum where members are also (and must be) ints

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CompletionEnv.get_env

def get_env(
    code:str, # Right-truncated to cursor position
    r2chars:str, # The two characters immediately after `code`, used to accurately determine rcomp
    sc_delimiter
)->Tuple:

Returns completions environment

test_eq(
    test_instance.get_env("`", "", None)[0:3],
    (Env.LOCAL, 1, ""))

test_eq(
    test_instance.get_env("*%b", "", None)[0:2],
    (Env.MAGIC, 1))

test_eq(
    test_instance.get_env("gen time_tc = clock(datea", "", None)[0:2],
    (Env.GENERAL, 20))

test_eq(
    test_instance.get_env("list var1-v", "", None)[0:2],
    (Env.GENERAL, 10))