a9d2b1dde6
Avoids us having to maintain a separate hardcoded list. This does mean we don't support parsing of `decibel` but it's not used anywhere yet and will be supported automatically when added to Units.json
72 lines
1.8 KiB
Python
72 lines
1.8 KiB
Python
from dataclasses import dataclass
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from math import inf
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from typing import Optional
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from typing import Union
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from Utils.css_dimensions import get_css_dimensions
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@dataclass(frozen=True)
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class NumericTypeRangeRestriction:
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minimum: float
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maximum: float
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def dump(self) -> str:
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return f"[{bound_value_to_string(self.minimum)},{bound_value_to_string(self.maximum)}]"
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def bound_value_to_string(value: float) -> str:
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if value == -inf:
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return "-∞"
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if value == inf:
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return "∞"
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return str(value)
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def is_dimension_type(type_name: str) -> bool:
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return type_name in get_css_dimensions().keys()
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def is_dimension_percentage_mix_type(type_name: str) -> bool:
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# https://drafts.csswg.org/css-values-4/#mixed-percentages
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return type_name in (
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"angle-percentage",
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"frequency-percentage",
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"length-percentage",
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"time-percentage",
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)
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def is_numeric_type(type_name: str) -> bool:
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# https://drafts.csswg.org/css-values-4/#numeric-data-types
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return type_name in ("integer", "number", "percentage") or is_dimension_type(type_name)
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@dataclass(frozen=True)
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class Type:
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name: str
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custom_ident_blacklist: list[str]
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numeric_type_accepted_range: Optional[NumericTypeRangeRestriction]
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def dump(self, indent: int) -> str:
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output = f"{'': >{indent}}Type: {self.name}"
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if self.custom_ident_blacklist:
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output += f" ![{', '.join(self.custom_ident_blacklist)}]"
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if self.numeric_type_accepted_range:
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output += f" {self.numeric_type_accepted_range.dump()}"
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return output + "\n"
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@dataclass(frozen=True)
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class Keyword:
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value: str
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def dump(self, indent: int) -> str:
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return f"{'': >{indent}}Keyword: {self.value}\n"
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# https://drafts.csswg.org/css-values-4/#component-types
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ComponentValue = Union[Type, Keyword]
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