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generic.carbon

generic.carbon 12 KB
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  1. // Part of the Carbon Language project, under the Apache License v2.0 with LLVM
    2. 

  2. // Exceptions. See /LICENSE for license information.
    3. 

  3. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
    4. 

  4. //
    5. 

  5. // INCLUDE-FILE: toolchain/testing/testdata/min_prelude/none.carbon
    6. 

  6. //
    7. 

  7. // AUTOUPDATE
    8. 

  8. // TIP: To test this file alone, run:
    9. 

  9. // TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/named_constraint/generic.carbon
    10. 

  10. // TIP: To dump output, run:
    11. 

  11. // TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/named_constraint/generic.carbon
    12. 

  12. 

  13. // --- generic.carbon
    14. 

  14. library "[[@TEST_NAME]]";
    15. 

  15. //@include-in-dumps
    16. 

  16. 

  17. constraint GenericType(T:! type) {}
    18. 

  18. 

  19. interface Z {}
    20. 

  20. constraint GenericZ(U:! Z) {}
    21. 

  21. 

  22. constraint ForwardDeclaredGeneric(T:! type);
    23. 

  23. constraint ForwardDeclaredGeneric(T:! type) {}
    24. 

  24. 

  25. // --- fail_mismatched_generic_param_types.carbon
    26. 

  26. library "[[@TEST_NAME]]";
    27. 

  27. 

  28. constraint ForwardDeclaredGeneric(T:! ());
    29. 

  29. // CHECK:STDERR: fail_mismatched_generic_param_types.carbon:[[@LINE+7]]:35: error: type `<pattern for type>` of parameter 1 in redeclaration differs from previous parameter type `<pattern for ()>` [RedeclParamDiffersType]
    30. 

  30. // CHECK:STDERR: constraint ForwardDeclaredGeneric(T:! type) {}
    31. 

  31. // CHECK:STDERR:                                   ^
    32. 

  32. // CHECK:STDERR: fail_mismatched_generic_param_types.carbon:[[@LINE-4]]:35: note: previous declaration's corresponding parameter here [RedeclParamPrevious]
    33. 

  33. // CHECK:STDERR: constraint ForwardDeclaredGeneric(T:! ());
    34. 

  34. // CHECK:STDERR:                                   ^
    35. 

  35. // CHECK:STDERR:
    36. 

  36. constraint ForwardDeclaredGeneric(T:! type) {}
    37. 

  37. 

  38. // --- fail_mismatched_generic_param_arity.carbon
    39. 

  39. library "[[@TEST_NAME]]";
    40. 

  40. 

  41. constraint ForwardDeclaredGeneric(T:! type, U:! type);
    42. 

  42. // CHECK:STDERR: fail_mismatched_generic_param_arity.carbon:[[@LINE+7]]:1: error: redeclaration differs because of parameter count of 1 [RedeclParamCountDiffers]
    43. 

  43. // CHECK:STDERR: constraint ForwardDeclaredGeneric(T:! type) {}
    44. 

  44. // CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    45. 

  45. // CHECK:STDERR: fail_mismatched_generic_param_arity.carbon:[[@LINE-4]]:1: note: previously declared with parameter count of 2 [RedeclParamCountPrevious]
    46. 

  46. // CHECK:STDERR: constraint ForwardDeclaredGeneric(T:! type, U:! type);
    47. 

  47. // CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    48. 

  48. // CHECK:STDERR:
    49. 

  49. constraint ForwardDeclaredGeneric(T:! type) {}
    50. 

  50. 

  51. // --- fail_inside_definition.carbon
    52. 

  52. library "[[@TEST_NAME]]";
    53. 

  53. 

  54. constraint Generic(T:! type) {}
    55. 

  55. // CHECK:STDERR: fail_inside_definition.carbon:[[@LINE+7]]:1: error: redefinition of `constraint Generic` [RedeclRedef]
    56. 

  56. // CHECK:STDERR: constraint Generic(T:! type) {}
    57. 

  57. // CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    58. 

  58. // CHECK:STDERR: fail_inside_definition.carbon:[[@LINE-4]]:1: note: previously defined here [RedeclPrevDef]
    59. 

  59. // CHECK:STDERR: constraint Generic(T:! type) {}
    60. 

  60. // CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    61. 

  61. // CHECK:STDERR:
    62. 

  62. constraint Generic(T:! type) {}
    63. 

  63. 

  64. // --- fail_args_count_mismatch.carbon
    65. 

  65. library "[[@TEST_NAME]]";
    66. 

  66. 

  67. constraint Generic(T:! type) {}
    68. 

  68. 

  69. // CHECK:STDERR: fail_args_count_mismatch.carbon:[[@LINE+7]]:10: error: 2 arguments passed to generic constraint expecting 1 argument [CallArgCountMismatch]
    70. 

  70. // CHECK:STDERR: fn F(T:! Generic((), ())) {}
    71. 

  71. // CHECK:STDERR:          ^~~~~~~~~~~~~~~
    72. 

  72. // CHECK:STDERR: fail_args_count_mismatch.carbon:[[@LINE-5]]:1: note: calling generic constraint declared here [InCallToEntity]
    73. 

  73. // CHECK:STDERR: constraint Generic(T:! type) {}
    74. 

  74. // CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    75. 

  75. // CHECK:STDERR:
    76. 

  76. fn F(T:! Generic((), ())) {}
    77. 

  77. 

  78. // CHECK:STDOUT: --- generic.carbon
    79. 

  79. // CHECK:STDOUT:
    80. 

  80. // CHECK:STDOUT: constants {
    81. 

  81. // CHECK:STDOUT:   %type: type = facet_type <type> [concrete]
    82. 

  82. // CHECK:STDOUT:   %.Self: %type = symbolic_binding .Self [symbolic_self]
    83. 

  83. // CHECK:STDOUT:   %T: type = symbolic_binding T, 0 [symbolic]
    84. 

  84. // CHECK:STDOUT:   %pattern_type.98f: type = pattern_type type [concrete]
    85. 

  85. // CHECK:STDOUT:   %GenericType.type.ace: type = generic_named_constaint_type @GenericType [concrete]
    86. 

  86. // CHECK:STDOUT:   %empty_struct.bd5: %GenericType.type.ace = struct_value () [concrete]
    87. 

  87. // CHECK:STDOUT:   %GenericType.type.b8d: type = facet_type <@GenericType, @GenericType(%T)> [symbolic]
    88. 

  88. // CHECK:STDOUT:   %Self.aa1546.1: %GenericType.type.b8d = symbolic_binding Self, 1 [symbolic]
    89. 

  89. // CHECK:STDOUT:   %Z.type: type = facet_type <@Z> [concrete]
    90. 

  90. // CHECK:STDOUT:   %Self.3b3: %Z.type = symbolic_binding Self, 0 [symbolic]
    91. 

  91. // CHECK:STDOUT:   %U: %Z.type = symbolic_binding U, 0 [symbolic]
    92. 

  92. // CHECK:STDOUT:   %pattern_type.4a0: type = pattern_type %Z.type [concrete]
    93. 

  93. // CHECK:STDOUT:   %GenericZ.type.e48: type = generic_named_constaint_type @GenericZ [concrete]
    94. 

  94. // CHECK:STDOUT:   %empty_struct.05e: %GenericZ.type.e48 = struct_value () [concrete]
    95. 

  95. // CHECK:STDOUT:   %GenericZ.type.b8d: type = facet_type <@GenericZ, @GenericZ(%U)> [symbolic]
    96. 

  96. // CHECK:STDOUT:   %Self.aa1546.2: %GenericZ.type.b8d = symbolic_binding Self, 1 [symbolic]
    97. 

  97. // CHECK:STDOUT:   %ForwardDeclaredGeneric.type.341: type = generic_named_constaint_type @ForwardDeclaredGeneric [concrete]
    98. 

  98. // CHECK:STDOUT:   %empty_struct.1a7: %ForwardDeclaredGeneric.type.341 = struct_value () [concrete]
    99. 

  99. // CHECK:STDOUT:   %ForwardDeclaredGeneric.type.b8d: type = facet_type <@ForwardDeclaredGeneric, @ForwardDeclaredGeneric(%T)> [symbolic]
    100. 

  100. // CHECK:STDOUT:   %Self.aa1546.3: %ForwardDeclaredGeneric.type.b8d = symbolic_binding Self, 1 [symbolic]
    101. 

  101. // CHECK:STDOUT: }
    102. 

  102. // CHECK:STDOUT:
    103. 

  103. // CHECK:STDOUT: file {
    104. 

  104. // CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
    105. 

  105. // CHECK:STDOUT:     .GenericType = %GenericType.decl
    106. 

  106. // CHECK:STDOUT:     .Z = %Z.decl
    107. 

  107. // CHECK:STDOUT:     .GenericZ = %GenericZ.decl
    108. 

  108. // CHECK:STDOUT:     .ForwardDeclaredGeneric = %ForwardDeclaredGeneric.decl.loc9
    109. 

  109. // CHECK:STDOUT:   }
    110. 

  110. // CHECK:STDOUT:   %GenericType.decl: %GenericType.type.ace = constraint_decl @GenericType [concrete = constants.%empty_struct.bd5] {
    111. 

  111. // CHECK:STDOUT:     %T.patt: %pattern_type.98f = symbolic_binding_pattern T, 0 [concrete]
    112. 

  112. // CHECK:STDOUT:   } {
    113. 

  113. // CHECK:STDOUT:     %.Self: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
    114. 

  114. // CHECK:STDOUT:     %T.loc4_24.2: type = symbolic_binding T, 0 [symbolic = %T.loc4_24.1 (constants.%T)]
    115. 

  115. // CHECK:STDOUT:   }
    116. 

  116. // CHECK:STDOUT:   %Z.decl: type = interface_decl @Z [concrete = constants.%Z.type] {} {}
    117. 

  117. // CHECK:STDOUT:   %GenericZ.decl: %GenericZ.type.e48 = constraint_decl @GenericZ [concrete = constants.%empty_struct.05e] {
    118. 

  118. // CHECK:STDOUT:     %U.patt: %pattern_type.4a0 = symbolic_binding_pattern U, 0 [concrete]
    119. 

  119. // CHECK:STDOUT:   } {
    120. 

  120. // CHECK:STDOUT:     %.loc7: type = splice_block %Z.ref [concrete = constants.%Z.type] {
    121. 

  121. // CHECK:STDOUT:       %.Self: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
    122. 

  122. // CHECK:STDOUT:       %Z.ref: type = name_ref Z, file.%Z.decl [concrete = constants.%Z.type]
    123. 

  123. // CHECK:STDOUT:     }
    124. 

  124. // CHECK:STDOUT:     %U.loc7_21.2: %Z.type = symbolic_binding U, 0 [symbolic = %U.loc7_21.1 (constants.%U)]
    125. 

  125. // CHECK:STDOUT:   }
    126. 

  126. // CHECK:STDOUT:   %ForwardDeclaredGeneric.decl.loc9: %ForwardDeclaredGeneric.type.341 = constraint_decl @ForwardDeclaredGeneric [concrete = constants.%empty_struct.1a7] {
    127. 

  127. // CHECK:STDOUT:     %T.patt: %pattern_type.98f = symbolic_binding_pattern T, 0 [concrete]
    128. 

  128. // CHECK:STDOUT:   } {
    129. 

  129. // CHECK:STDOUT:     %.Self.2: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
    130. 

  130. // CHECK:STDOUT:     %T.loc9_35.2: type = symbolic_binding T, 0 [symbolic = %T.loc9_35.1 (constants.%T)]
    131. 

  131. // CHECK:STDOUT:   }
    132. 

  132. // CHECK:STDOUT:   %ForwardDeclaredGeneric.decl.loc10: %ForwardDeclaredGeneric.type.341 = constraint_decl @ForwardDeclaredGeneric [concrete = constants.%empty_struct.1a7] {
    133. 

  133. // CHECK:STDOUT:     %T.patt: %pattern_type.98f = symbolic_binding_pattern T, 0 [concrete]
    134. 

  134. // CHECK:STDOUT:   } {
    135. 

  135. // CHECK:STDOUT:     %.Self.1: %type = symbolic_binding .Self [symbolic_self = constants.%.Self]
    136. 

  136. // CHECK:STDOUT:     %T.loc10: type = symbolic_binding T, 0 [symbolic = %T.loc9_35.1 (constants.%T)]
    137. 

  137. // CHECK:STDOUT:   }
    138. 

  138. // CHECK:STDOUT: }
    139. 

  139. // CHECK:STDOUT:
    140. 

  140. // CHECK:STDOUT: interface @Z {
    141. 

  141. // CHECK:STDOUT:   %Self: %Z.type = symbolic_binding Self, 0 [symbolic = constants.%Self.3b3]
    142. 

  142. // CHECK:STDOUT:
    143. 

  143. // CHECK:STDOUT: !members:
    144. 

  144. // CHECK:STDOUT:   .Self = %Self
    145. 

  145. // CHECK:STDOUT:   witness = ()
    146. 

  146. // CHECK:STDOUT:
    147. 

  147. // CHECK:STDOUT: !requires:
    148. 

  148. // CHECK:STDOUT: }
    149. 

  149. // CHECK:STDOUT:
    150. 

  150. // CHECK:STDOUT: generic constraint @GenericType(%T.loc4_24.2: type) {
    151. 

  151. // CHECK:STDOUT:   %T.loc4_24.1: type = symbolic_binding T, 0 [symbolic = %T.loc4_24.1 (constants.%T)]
    152. 

  152. // CHECK:STDOUT:
    153. 

  153. // CHECK:STDOUT: !definition:
    154. 

  154. // CHECK:STDOUT:   %GenericType.type: type = facet_type <@GenericType, @GenericType(%T.loc4_24.1)> [symbolic = %GenericType.type (constants.%GenericType.type.b8d)]
    155. 

  155. // CHECK:STDOUT:   %Self.loc4_34.2: @GenericType.%GenericType.type (%GenericType.type.b8d) = symbolic_binding Self, 1 [symbolic = %Self.loc4_34.2 (constants.%Self.aa1546.1)]
    156. 

  156. // CHECK:STDOUT:
    157. 

  157. // CHECK:STDOUT:   constraint {
    158. 

  158. // CHECK:STDOUT:     %Self.loc4_34.1: @GenericType.%GenericType.type (%GenericType.type.b8d) = symbolic_binding Self, 1 [symbolic = %Self.loc4_34.2 (constants.%Self.aa1546.1)]
    159. 

  159. // CHECK:STDOUT:
    160. 

  160. // CHECK:STDOUT:   !members:
    161. 

  161. // CHECK:STDOUT:     .Self = %Self.loc4_34.1
    162. 

  162. // CHECK:STDOUT:
    163. 

  163. // CHECK:STDOUT:   !requires:
    164. 

  164. // CHECK:STDOUT:   }
    165. 

  165. // CHECK:STDOUT: }
    166. 

  166. // CHECK:STDOUT:
    167. 

  167. // CHECK:STDOUT: generic constraint @GenericZ(%U.loc7_21.2: %Z.type) {
    168. 

  168. // CHECK:STDOUT:   %U.loc7_21.1: %Z.type = symbolic_binding U, 0 [symbolic = %U.loc7_21.1 (constants.%U)]
    169. 

  169. // CHECK:STDOUT:
    170. 

  170. // CHECK:STDOUT: !definition:
    171. 

  171. // CHECK:STDOUT:   %GenericZ.type: type = facet_type <@GenericZ, @GenericZ(%U.loc7_21.1)> [symbolic = %GenericZ.type (constants.%GenericZ.type.b8d)]
    172. 

  172. // CHECK:STDOUT:   %Self.loc7_28.2: @GenericZ.%GenericZ.type (%GenericZ.type.b8d) = symbolic_binding Self, 1 [symbolic = %Self.loc7_28.2 (constants.%Self.aa1546.2)]
    173. 

  173. // CHECK:STDOUT:
    174. 

  174. // CHECK:STDOUT:   constraint {
    175. 

  175. // CHECK:STDOUT:     %Self.loc7_28.1: @GenericZ.%GenericZ.type (%GenericZ.type.b8d) = symbolic_binding Self, 1 [symbolic = %Self.loc7_28.2 (constants.%Self.aa1546.2)]
    176. 

  176. // CHECK:STDOUT:
    177. 

  177. // CHECK:STDOUT:   !members:
    178. 

  178. // CHECK:STDOUT:     .Self = %Self.loc7_28.1
    179. 

  179. // CHECK:STDOUT:
    180. 

  180. // CHECK:STDOUT:   !requires:
    181. 

  181. // CHECK:STDOUT:   }
    182. 

  182. // CHECK:STDOUT: }
    183. 

  183. // CHECK:STDOUT:
    184. 

  184. // CHECK:STDOUT: generic constraint @ForwardDeclaredGeneric(%T.loc9_35.2: type) {
    185. 

  185. // CHECK:STDOUT:   %T.loc9_35.1: type = symbolic_binding T, 0 [symbolic = %T.loc9_35.1 (constants.%T)]
    186. 

  186. // CHECK:STDOUT:
    187. 

  187. // CHECK:STDOUT: !definition:
    188. 

  188. // CHECK:STDOUT:   %ForwardDeclaredGeneric.type: type = facet_type <@ForwardDeclaredGeneric, @ForwardDeclaredGeneric(%T.loc9_35.1)> [symbolic = %ForwardDeclaredGeneric.type (constants.%ForwardDeclaredGeneric.type.b8d)]
    189. 

  189. // CHECK:STDOUT:   %Self.loc10_45.2: @ForwardDeclaredGeneric.%ForwardDeclaredGeneric.type (%ForwardDeclaredGeneric.type.b8d) = symbolic_binding Self, 1 [symbolic = %Self.loc10_45.2 (constants.%Self.aa1546.3)]
    190. 

  190. // CHECK:STDOUT:
    191. 

  191. // CHECK:STDOUT:   constraint {
    192. 

  192. // CHECK:STDOUT:     %Self.loc10_45.1: @ForwardDeclaredGeneric.%ForwardDeclaredGeneric.type (%ForwardDeclaredGeneric.type.b8d) = symbolic_binding Self, 1 [symbolic = %Self.loc10_45.2 (constants.%Self.aa1546.3)]
    193. 

  193. // CHECK:STDOUT:
    194. 

  194. // CHECK:STDOUT:   !members:
    195. 

  195. // CHECK:STDOUT:     .Self = %Self.loc10_45.1
    196. 

  196. // CHECK:STDOUT:
    197. 

  197. // CHECK:STDOUT:   !requires:
    198. 

  198. // CHECK:STDOUT:   }
    199. 

  199. // CHECK:STDOUT: }
    200. 

  200. // CHECK:STDOUT:
    201. 

  201. // CHECK:STDOUT: specific @GenericType(constants.%T) {
    202. 

  202. // CHECK:STDOUT:   %T.loc4_24.1 => constants.%T
    203. 

  203. // CHECK:STDOUT: }
    204. 

  204. // CHECK:STDOUT:
    205. 

  205. // CHECK:STDOUT: specific @GenericZ(constants.%U) {
    206. 

  206. // CHECK:STDOUT:   %U.loc7_21.1 => constants.%U
    207. 

  207. // CHECK:STDOUT: }
    208. 

  208. // CHECK:STDOUT:
    209. 

  209. // CHECK:STDOUT: specific @ForwardDeclaredGeneric(constants.%T) {
    210. 

  210. // CHECK:STDOUT:   %T.loc9_35.1 => constants.%T
    211. 

  211. // CHECK:STDOUT: }
    212. 

  212. // CHECK:STDOUT:
    213.