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locator errorer betterer

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This commit is contained in:
Paul Liverman III 2018-02-23 03:38:24 -08:00
parent 25e4ed91f5
commit 34c0f97429
1 changed files with 22 additions and 15 deletions
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37
init.moon
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@ -1,35 +1,42 @@
config = require "locator_config"
config = require "locator_config" -- TODO combine w values from Lapis's config, those overwriting these (this will be a legacy option)
import insert, sort from table
-- locates and returns a module, or errors
-- require, but only errors when a module errors during loading
check_require = (path) ->
ok, value = pcall -> require path
if ok or ("string" == type(value) and 1 == value\find "module '#{path}' not found")
return ok, value
else
error value
-- locates and returns a module
-- if a path is specified, it will be checked before other paths
-- checks the project root, then each path specified in locator_config
locate = (name, path) ->
local value
print "locate ->"
if path
print "try '#{path}.#{name}'"
ok, value = pcall -> require "#{path}.#{name}"
print " try '#{path}.#{name}'"
ok, value = pcall -> check_require "#{path}.#{name}"
return value if ok
print "try '#{name}'"
ok, value = pcall -> require name
print " try '#{name}'"
ok, value = pcall -> check_require name
return value if ok
for item in *config
if path
print "try '#{item.path}.#{path}.#{name}'"
ok, value = pcall -> require "#{item.path}.#{path}.#{name}"
print " try '#{item.path}.#{path}.#{name}'"
ok, value = pcall -> check_require "#{item.path}.#{path}.#{name}"
else
print "try '#{item.path}.#{name}'"
ok, value = pcall -> require "#{item.path}.#{name}"
print " try '#{item.path}.#{name}'"
ok, value = pcall -> check_require "#{item.path}.#{name}"
return value if ok
if path
error "locator could not find '#{path}.#{name}'\nlast error: #{value}"
error "locator could not find '#{path}.#{name}'"
else
error "locator could not find '#{name}'\nlast error: #{value}"
error "locator could not find '#{name}'"
-- works like Lapis's autoload, but
-- includes trying sub-application paths & can be called to access a value
@ -47,7 +54,7 @@ autoload = (path, tab={}) ->
-- (legacy) see example config for how to specify to not include early migrations
make_migrations = (app_migrations={}) ->
for item in *config
ok, migrations = pcall -> require "#{item.path}.migrations"
ok, migrations = pcall -> check_require "#{item.path}.migrations"
if ok
sorted = {}
for m in pairs migrations
@ -79,7 +86,7 @@ registry = setmetatable {}, {
insert registered_functions, config[name]
for item in *config
ok, register = pcall -> require "#{item.path}.locator_config"
ok, register = pcall -> check_require "#{item.path}.locator_config"
if ok and register[name]
insert registered_functions, register[name]