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method_maker.gd
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method_maker.gd
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# This class will generate method declaration lines based on method meta
# data. It will create defaults that match the method data.
#
# --------------------
# function meta data
# --------------------
# name:
# flags:
# args: [{
# (class_name:),
# (hint:0),
# (hint_string:),
# (name:),
# (type:4),
# (usage:7)
# }]
# default_args []
var _utils = load('res://addons/gut/utils.gd').get_instance()
var _lgr = _utils.get_logger()
const PARAM_PREFIX = 'p_'
# ------------------------------------------------------
# _supported_defaults
#
# This array contains all the data types that are supported for default values.
# If a value is supported it will contain either an empty string or a prefix
# that should be used when setting the parameter default value.
# For example int, real, bool do not need anything func(p1=1, p2=2.2, p3=false)
# but things like Vectors and Colors do since only the parameters to create a
# new Vector or Color are included in the metadata.
# ------------------------------------------------------
# TYPE_NIL = 0 — Variable is of type nil (only applied for null).
# TYPE_BOOL = 1 — Variable is of type bool.
# TYPE_INT = 2 — Variable is of type int.
# TYPE_REAL = 3 — Variable is of type float/real.
# TYPE_STRING = 4 — Variable is of type String.
# TYPE_VECTOR2 = 5 — Variable is of type Vector2.
# TYPE_RECT2 = 6 — Variable is of type Rect2.
# TYPE_VECTOR3 = 7 — Variable is of type Vector3.
# TYPE_COLOR = 14 — Variable is of type Color.
# TYPE_OBJECT = 17 — Variable is of type Object.
# TYPE_DICTIONARY = 18 — Variable is of type Dictionary.
# TYPE_ARRAY = 19 — Variable is of type Array.
# TYPE_VECTOR2_ARRAY = 24 — Variable is of type PoolVector2Array.
# TYPE_TRANSFORM2D = 8 — Variable is of type Transform2D.
# TYPE_PLANE = 9 — Variable is of type Plane.
# TYPE_QUAT = 10 — Variable is of type Quat.
# TYPE_AABB = 11 — Variable is of type AABB.
# TYPE_BASIS = 12 — Variable is of type Basis.
# TYPE_TRANSFORM = 13 — Variable is of type Transform.
# TYPE_NODE_PATH = 15 — Variable is of type NodePath.
# TYPE_RID = 16 — Variable is of type RID.
# TYPE_RAW_ARRAY = 20 — Variable is of type PoolByteArray.
# TYPE_INT_ARRAY = 21 — Variable is of type PoolIntArray.
# TYPE_REAL_ARRAY = 22 — Variable is of type PoolRealArray.
# TYPE_STRING_ARRAY = 23 — Variable is of type PoolStringArray.
# TYPE_VECTOR3_ARRAY = 25 — Variable is of type PoolVector3Array.
# TYPE_COLOR_ARRAY = 26 — Variable is of type PoolColorArray.
# TYPE_MAX = 27 — Marker for end of type constants.
# ------------------------------------------------------
var _supported_defaults = []
func _init():
for _i in range(TYPE_MAX):
_supported_defaults.append(null)
# These types do not require a prefix for defaults
_supported_defaults[TYPE_NIL] = ''
_supported_defaults[TYPE_BOOL] = ''
_supported_defaults[TYPE_INT] = ''
_supported_defaults[TYPE_REAL] = ''
_supported_defaults[TYPE_OBJECT] = ''
_supported_defaults[TYPE_ARRAY] = ''
_supported_defaults[TYPE_STRING] = ''
_supported_defaults[TYPE_DICTIONARY] = ''
_supported_defaults[TYPE_VECTOR2_ARRAY] = ''
# These require a prefix for whatever default is provided
_supported_defaults[TYPE_VECTOR2] = 'Vector2'
_supported_defaults[TYPE_RECT2] = 'Rect2'
_supported_defaults[TYPE_VECTOR3] = 'Vector3'
_supported_defaults[TYPE_COLOR] = 'Color'
# ###############
# Private
# ###############
var _func_text = _utils.get_file_as_text('res://addons/gut/double_templates/function_template.txt')
func _is_supported_default(type_flag):
return type_flag >= 0 and type_flag < _supported_defaults.size() and [type_flag] != null
# Creates a list of parameters with defaults of null unless a default value is
# found in the metadata. If a default is found in the meta then it is used if
# it is one we know how support.
#
# If a default is found that we don't know how to handle then this method will
# return null.
func _get_arg_text(method_meta):
var text = ''
var args = method_meta.args
var defaults = []
var has_unsupported_defaults = false
# fill up the defaults with null defaults for everything that doesn't have
# a default in the meta data. default_args is an array of default values
# for the last n parameters where n is the size of default_args so we only
# add nulls for everything up to the first parameter with a default.
for _i in range(args.size() - method_meta.default_args.size()):
defaults.append('null')
# Add meta-data defaults.
for i in range(method_meta.default_args.size()):
var t = args[defaults.size()]['type']
var value = ''
if(_is_supported_default(t)):
# strings are special, they need quotes around the value
if(t == TYPE_STRING):
value = str("'", str(method_meta.default_args[i]), "'")
# Colors need the parens but things like Vector2 and Rect2 don't
elif(t == TYPE_COLOR):
value = str(_supported_defaults[t], '(', str(method_meta.default_args[i]), ')')
elif(t == TYPE_OBJECT):
if(str(method_meta.default_args[i]) == "[Object:null]"):
value = str(_supported_defaults[t], 'null')
else:
value = str(_supported_defaults[t], str(method_meta.default_args[i]).to_lower())
# Everything else puts the prefix (if one is there) form _supported_defaults
# in front. The to_lower is used b/c for some reason the defaults for
# null, true, false are all "Null", "True", "False".
else:
value = str(_supported_defaults[t], str(method_meta.default_args[i]).to_lower())
else:
_lgr.warn(str(
'Unsupported default param type: ',method_meta.name, '-', args[defaults.size()].name, ' ', t, ' = ', method_meta.default_args[i]))
value = str('unsupported=',t)
has_unsupported_defaults = true
defaults.append(value)
# construct the string of parameters
for i in range(args.size()):
text += str(PARAM_PREFIX, args[i].name, '=', defaults[i])
if(i != args.size() -1):
text += ', '
# if we don't know how to make a default then we have to return null b/c
# it will cause a runtime error and it's one thing we could return to let
# callers know it didn't work.
if(has_unsupported_defaults):
text = null
return text
# ###############
# Public
# ###############
# Creates a delceration for a function based off of function metadata. All
# types whose defaults are supported will have their values. If a datatype
# is not supported and the parameter has a default, a warning message will be
# printed and the declaration will return null.
func get_function_text(meta):
var method_params = _get_arg_text(meta)
var text = null
var param_array = get_spy_call_parameters_text(meta)
if(param_array == 'null'):
param_array = '[]'
if(method_params != null):
var decleration = str('func ', meta.name, '(', method_params, '):')
text = _func_text.format({
"func_decleration":decleration,
"method_name":meta.name,
"param_array":param_array,
"super_call":get_super_call_text(meta)
})
return text
# creates a call to the function in meta in the super's class.
func get_super_call_text(meta):
var params = ''
for i in range(meta.args.size()):
params += PARAM_PREFIX + meta.args[i].name
if(meta.args.size() > 1 and i != meta.args.size() -1):
params += ', '
if(meta.name == '_init'):
return 'null'
else:
return str('.', meta.name, '(', params, ')')
func get_spy_call_parameters_text(meta):
var called_with = 'null'
if(meta.args.size() > 0):
called_with = '['
for i in range(meta.args.size()):
called_with += str(PARAM_PREFIX, meta.args[i].name)
if(i < meta.args.size() - 1):
called_with += ', '
called_with += ']'
return called_with
func get_logger():
return _lgr
func set_logger(logger):
_lgr = logger