Coverage for hdl_registers/generator/html/register

1# --------------------------------------------------------------------------------------------------

4# This file is part of the hdl-registers project, an HDL register generator fast enough to run

5# in real time.

6# https://hdl-registers.com

7# https://github.com/hdl-registers/hdl-registers

8# --------------------------------------------------------------------------------------------------

10from __future__ import annotations

12from typing import TYPE_CHECKING, Any

14from hdl_registers.field.bit import Bit

15from hdl_registers.field.bit_vector import BitVector

16from hdl_registers.field.enumeration import Enumeration

17from hdl_registers.field.integer import Integer

18from hdl_registers.register import Register

20from .html_generator_common import HtmlGeneratorCommon

21from .html_translator import HtmlTranslator

23if TYPE_CHECKING:

24 from pathlib import Path

26 from hdl_registers.field.register_field import RegisterField

27 from hdl_registers.register_array import RegisterArray

28 from hdl_registers.register_list import RegisterList

31class HtmlRegisterTableGenerator(HtmlGeneratorCommon):

32 """

33 Generate HTML code with register information in a table.

34 See the :ref:`generator_html` article for usage details.

35 """

37 __version__ = "1.0.0"

39 SHORT_DESCRIPTION = "HTML register table"

41 @property

42 def output_file(self) -> Path:

43 """

44 Result will be placed in this file.

45 """

46 return self.output_folder / f"{self.name}_register_table.html"

48 def __init__(self, register_list: RegisterList, output_folder: Path) -> None:

49 super().__init__(register_list=register_list, output_folder=output_folder)

51 self._html_translator = HtmlTranslator()

53 def get_code(

54 self,

55 **kwargs: Any, # noqa: ANN401, ARG002

56 ) -> str:

57 if not self.register_list.register_objects:

58 return ""

60 html = """\

61<table>

62<thead>

63 <tr>

64 <th>Name</th>

65 <th>Index</th>

66 <th>Address</th>

67 <th>Mode</th>

68 <th>Default value</th>

69 <th>Description</th>

70 </tr>

71</thead>

72<tbody>"""

74 for register_object in self.iterate_register_objects():

75 if isinstance(register_object, Register):

76 html += self._annotate_register(register_object)

77 else:

78 html += self._annotate_register_array(register_object)

80 html += """

81</tbody>

82</table>"""

84 return html

86 @staticmethod

87 def _to_hex_string(value: int, num_nibbles: int = 4) -> str:

88 """

89 Convert an integer value to a hexadecimal string. E.g. "0x1000".

90 """

91 if value < 0:

92 return "-"

94 formatting_string = f"0x{ :0{num_nibbles}X} "

95 return formatting_string.format(value)

97 def _annotate_register_array(self, register_object: RegisterArray) -> str:

98 description = self._html_translator.translate(register_object.description)

99 html = f"""

100 <tr>

101 <td class="array_header" colspan=5>

102

103 Register array {register_object.name}, \

104repeated {register_object.length} times.

105 Iterator i ∈ [0, {register_object.length - 1}].

106

107 </td>

108 <td class="array_header">

109{description}

110 </td>

111 </tr>"""

112 array_index_increment = len(register_object.registers)

113 for register in register_object.registers:

114 register_index = register_object.base_index + register.index

115 html += self._annotate_register(register, register_index, array_index_increment)

116

117 html += f"""

118 <tr>

119 <td colspan="6" class="array_footer">

120 End register array {register_object.name}.

121 </td>

122 </tr>"""

123 return html

124

125 def _annotate_register(

126 self,

127 register: Register,

128 register_array_index: int | None = None,

129 array_index_increment: int | None = None,

130 ) -> str:

131 if register_array_index is None:

132 address_readable = self._to_hex_string(register.address)

133 index = str(register.address // 4)

134 else:

135 register_address = self._to_hex_string(4 * register_array_index)

136 address_increment = self._to_hex_string(4 * array_index_increment)

137 address_readable = f"{register_address} + i × {address_increment}"

138

139 index = f"{register_array_index} + i × {array_index_increment}"

140

141 description = self._html_translator.translate(register.description)

142 html = f"""

143 <tr>

144 <td>{register.name}</td>

145 <td>{index}</td>

146 <td>{address_readable}</td>

147 <td>{register.mode.name}</td>

148 <td>{self._to_hex_string(register.default_value, num_nibbles=1)}</td>

149 <td>

150{description}

151 </td>

152 </tr>"""

153

154 for field in register.fields:

155 html += self._annotate_field(field)

156

157 return html

158

159 def _annotate_field(self, field: RegisterField) -> str:

160 description = field.description

161

162 if isinstance(field, Enumeration):

163 description += """

164

165Can be set to the following values:

166

167"""

168 for element in field.elements:

169 # Indent so multi-line description is part of the bullet point.

170 element_description = element.description.strip().replace("\n", "\n ")

171 description += f"""\

172* ``{element.name}`` ({element.value}): {element_description}

173"""

174

175 description = self._html_translator.translate(description)

176

177 if isinstance(field, Integer):

178 description += f"""\

179Valid numeric range: [{field.min_value} – {field.max_value}].

180"""

181

182 return f"""

183 <tr>

184 <td>  {field.name}</td>

185 <td>  {self._field_range(field=field)}</td>

186 <td></td>

187 <td></td>

188 <td>{self._get_field_default_value(field=field)}</td>

189 <td>

190{description}

191 </td>

192 </tr>"""

193

194 @staticmethod

195 def _field_range(field: RegisterField) -> str:

196 """

197 Return the bits that this field occupies in a readable format.

198 The way it shall appear in documentation.

199 """

200 if field.width == 1:

201 return f"{field.base_index}"

202

203 return f"{field.base_index + field.width - 1}:{field.base_index}"

204

205 def _get_field_default_value(self, field: RegisterField) -> str:

206 """

207 A human-readable string representation of the default value.

208 """

209 return self._html_translator.translate(self._field_default_value(field=field))

210

211 @staticmethod

212 def _field_default_value(field: RegisterField) -> str:

213 """

214 A human-readable string representation of the default value.

215 """

216 if isinstance(field, (Bit, BitVector)):

217 return f"0b{field.default_value}"

218

219 if isinstance(field, Enumeration):

220 return f"``{field.default_value.name}``"

221

222 if isinstance(field, Integer):

223 return str(field.default_value)

224

225 raise ValueError(f"Unknown field: {field}")

Coverage for hdl_registers/generator/html/register_table.py: 93%

88 statements