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carbon-lang
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toolchain
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check
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testdata
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class
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generic
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member_lookup.carbon

member_lookup.carbon 11 KB
文件歷史 原始文件

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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/int.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/class/generic/member_lookup.carbon
    10. 

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

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

  12. 

  13. // --- member_access.carbon
    14. 

  14. 

  15. library "[[@TEST_NAME]]";
    16. 

  16. 

  17. base class Base(T:! type) {
    18. 

  18.   var b: T;
    19. 

  19. }
    20. 

  20. 

  21. class Derived(T:! type) {
    22. 

  22.   extend base: Base(T);
    23. 

  23.   var d: T;
    24. 

  24. }
    25. 

  25. 

  26. fn AccessDerived[T:! Core.Copy](x: Derived(T)) -> T {
    27. 

  27.   //@dump-sem-ir-begin
    28. 

  28.   return x.d;
    29. 

  29.   //@dump-sem-ir-end
    30. 

  30. }
    31. 

  31. 

  32. fn AccessBase[T:! Core.Copy](x: Derived(T)) -> T {
    33. 

  33.   //@dump-sem-ir-begin
    34. 

  34.   return x.b;
    35. 

  35.   //@dump-sem-ir-end
    36. 

  36. }
    37. 

  37. 

  38. fn AccessConcrete(x: Derived(i32)) -> i32 {
    39. 

  39.   return x.b;
    40. 

  40. }
    41. 

  41. 

  42. // --- fail_no_member.carbon
    43. 

  43. 

  44. library "[[@TEST_NAME]]";
    45. 

  45. 

  46. base class Base(T:! type) {
    47. 

  47.   var b: T;
    48. 

  48. }
    49. 

  49. 

  50. class Derived(T:! type) {
    51. 

  51.   extend base: Base(T);
    52. 

  52.   var d: T;
    53. 

  53. }
    54. 

  54. 

  55. fn AccessMissingBase[T:! type](x: Base(T)) -> T {
    56. 

  56.   // CHECK:STDERR: fail_no_member.carbon:[[@LINE+4]]:10: error: member name `nonesuch` not found in `Base(T)` [MemberNameNotFoundInSpecificScope]
    57. 

  57.   // CHECK:STDERR:   return x.nonesuch;
    58. 

  58.   // CHECK:STDERR:          ^~~~~~~~~~
    59. 

  59.   // CHECK:STDERR:
    60. 

  60.   return x.nonesuch;
    61. 

  61. }
    62. 

  62. 

  63. fn AccessMissingDerived[T:! type](x: Derived(T)) -> T {
    64. 

  64.   // CHECK:STDERR: fail_no_member.carbon:[[@LINE+4]]:10: error: member name `nonesuch` not found in `Derived(T)` [MemberNameNotFoundInSpecificScope]
    65. 

  65.   // CHECK:STDERR:   return x.nonesuch;
    66. 

  66.   // CHECK:STDERR:          ^~~~~~~~~~
    67. 

  67.   // CHECK:STDERR:
    68. 

  68.   return x.nonesuch;
    69. 

  69. }
    70. 

  70. 

  71. fn AccessMissingConcrete(x: Derived(i32)) -> i32 {
    72. 

  72.   // CHECK:STDERR: fail_no_member.carbon:[[@LINE+4]]:10: error: member name `nonesuch` not found in `Derived(i32)` [MemberNameNotFoundInSpecificScope]
    73. 

  73.   // CHECK:STDERR:   return x.nonesuch;
    74. 

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

  75.   // CHECK:STDERR:
    76. 

  76.   return x.nonesuch;
    77. 

  77. }
    78. 

  78. 

  79. // CHECK:STDOUT: --- member_access.carbon
    80. 

  80. // CHECK:STDOUT:
    81. 

  81. // CHECK:STDOUT: constants {
    82. 

  82. // CHECK:STDOUT:   %Copy.type: type = facet_type <@Copy> [concrete]
    83. 

  83. // CHECK:STDOUT:   %T.be8: %Copy.type = bind_symbolic_name T, 0 [symbolic]
    84. 

  84. // CHECK:STDOUT:   %T.binding.as_type: type = symbolic_binding_type T, 0, %T.be8 [symbolic]
    85. 

  85. // CHECK:STDOUT:   %Derived.b36: type = class_type @Derived, @Derived(%T.binding.as_type) [symbolic]
    86. 

  86. // CHECK:STDOUT:   %pattern_type.50f: type = pattern_type %Derived.b36 [symbolic]
    87. 

  87. // CHECK:STDOUT:   %pattern_type.17e4b7.1: type = pattern_type %T.binding.as_type [symbolic]
    88. 

  88. // CHECK:STDOUT:   %require_complete.1cd: <witness> = require_complete_type %T.binding.as_type [symbolic]
    89. 

  89. // CHECK:STDOUT:   %Base.342: type = class_type @Base, @Base(%T.binding.as_type) [symbolic]
    90. 

  90. // CHECK:STDOUT:   %require_complete.254: <witness> = require_complete_type %Base.342 [symbolic]
    91. 

  91. // CHECK:STDOUT:   %Derived.elem.0da: type = unbound_element_type %Derived.b36, %T.binding.as_type [symbolic]
    92. 

  92. // CHECK:STDOUT:   %Base.elem.b9e: type = unbound_element_type %Base.342, %T.binding.as_type [symbolic]
    93. 

  93. // CHECK:STDOUT:   %Copy.Op.type: type = fn_type @Copy.Op [concrete]
    94. 

  94. // CHECK:STDOUT:   %Copy.lookup_impl_witness.e15: <witness> = lookup_impl_witness %T.be8, @Copy [symbolic]
    95. 

  95. // CHECK:STDOUT:   %.427: type = fn_type_with_self_type %Copy.Op.type, %T.be8 [symbolic]
    96. 

  96. // CHECK:STDOUT:   %impl.elem0.168: %.427 = impl_witness_access %Copy.lookup_impl_witness.e15, element0 [symbolic]
    97. 

  97. // CHECK:STDOUT:   %specific_impl_fn.2ce: <specific function> = specific_impl_function %impl.elem0.168, @Copy.Op(%T.be8) [symbolic]
    98. 

  98. // CHECK:STDOUT: }
    99. 

  99. // CHECK:STDOUT:
    100. 

  100. // CHECK:STDOUT: imports {
    101. 

  101. // CHECK:STDOUT: }
    102. 

  102. // CHECK:STDOUT:
    103. 

  103. // CHECK:STDOUT: generic fn @AccessDerived(%T.loc13_18.2: %Copy.type) {
    104. 

  104. // CHECK:STDOUT:   <elided>
    105. 

  105. // CHECK:STDOUT:
    106. 

  106. // CHECK:STDOUT: !definition:
    107. 

  107. // CHECK:STDOUT:   <elided>
    108. 

  108. // CHECK:STDOUT:   %Derived.elem: type = unbound_element_type %Derived.loc13_45.1, %T.binding.as_type [symbolic = %Derived.elem (constants.%Derived.elem.0da)]
    109. 

  109. // CHECK:STDOUT:   %Copy.lookup_impl_witness: <witness> = lookup_impl_witness %T.loc13_18.1, @Copy [symbolic = %Copy.lookup_impl_witness (constants.%Copy.lookup_impl_witness.e15)]
    110. 

  110. // CHECK:STDOUT:   %.loc15_11.4: type = fn_type_with_self_type constants.%Copy.Op.type, %T.loc13_18.1 [symbolic = %.loc15_11.4 (constants.%.427)]
    111. 

  111. // CHECK:STDOUT:   %impl.elem0.loc15_11.2: @AccessDerived.%.loc15_11.4 (%.427) = impl_witness_access %Copy.lookup_impl_witness, element0 [symbolic = %impl.elem0.loc15_11.2 (constants.%impl.elem0.168)]
    112. 

  112. // CHECK:STDOUT:   %specific_impl_fn.loc15_11.2: <specific function> = specific_impl_function %impl.elem0.loc15_11.2, @Copy.Op(%T.loc13_18.1) [symbolic = %specific_impl_fn.loc15_11.2 (constants.%specific_impl_fn.2ce)]
    113. 

  113. // CHECK:STDOUT:
    114. 

  114. // CHECK:STDOUT:   fn(%x.param: @AccessDerived.%Derived.loc13_45.1 (%Derived.b36)) -> %return.param: @AccessDerived.%T.binding.as_type (%T.binding.as_type) {
    115. 

  115. // CHECK:STDOUT:   !entry:
    116. 

  116. // CHECK:STDOUT:     %x.ref: @AccessDerived.%Derived.loc13_45.1 (%Derived.b36) = name_ref x, %x
    117. 

  117. // CHECK:STDOUT:     %d.ref: @AccessDerived.%Derived.elem (%Derived.elem.0da) = name_ref d, @Derived.%.loc10 [concrete = @Derived.%.loc10]
    118. 

  118. // CHECK:STDOUT:     %.loc15_11.1: ref @AccessDerived.%T.binding.as_type (%T.binding.as_type) = class_element_access %x.ref, element1
    119. 

  119. // CHECK:STDOUT:     %.loc15_11.2: @AccessDerived.%T.binding.as_type (%T.binding.as_type) = bind_value %.loc15_11.1
    120. 

  120. // CHECK:STDOUT:     %impl.elem0.loc15_11.1: @AccessDerived.%.loc15_11.4 (%.427) = impl_witness_access constants.%Copy.lookup_impl_witness.e15, element0 [symbolic = %impl.elem0.loc15_11.2 (constants.%impl.elem0.168)]
    121. 

  121. // CHECK:STDOUT:     %bound_method.loc15_11.1: <bound method> = bound_method %.loc15_11.2, %impl.elem0.loc15_11.1
    122. 

  122. // CHECK:STDOUT:     %specific_impl_fn.loc15_11.1: <specific function> = specific_impl_function %impl.elem0.loc15_11.1, @Copy.Op(constants.%T.be8) [symbolic = %specific_impl_fn.loc15_11.2 (constants.%specific_impl_fn.2ce)]
    123. 

  123. // CHECK:STDOUT:     %bound_method.loc15_11.2: <bound method> = bound_method %.loc15_11.2, %specific_impl_fn.loc15_11.1
    124. 

  124. // CHECK:STDOUT:     <elided>
    125. 

  125. // CHECK:STDOUT:     %.loc15_11.3: init @AccessDerived.%T.binding.as_type (%T.binding.as_type) = call %bound_method.loc15_11.2(%.loc15_11.2) to %.loc13_48
    126. 

  126. // CHECK:STDOUT:     return %.loc15_11.3 to %return
    127. 

  127. // CHECK:STDOUT:   }
    128. 

  128. // CHECK:STDOUT: }
    129. 

  129. // CHECK:STDOUT:
    130. 

  130. // CHECK:STDOUT: generic fn @AccessBase(%T.loc19_15.2: %Copy.type) {
    131. 

  131. // CHECK:STDOUT:   <elided>
    132. 

  132. // CHECK:STDOUT:
    133. 

  133. // CHECK:STDOUT: !definition:
    134. 

  134. // CHECK:STDOUT:   <elided>
    135. 

  135. // CHECK:STDOUT:   %Base: type = class_type @Base, @Base(%T.binding.as_type) [symbolic = %Base (constants.%Base.342)]
    136. 

  136. // CHECK:STDOUT:   %require_complete.loc21_11: <witness> = require_complete_type %Base [symbolic = %require_complete.loc21_11 (constants.%require_complete.254)]
    137. 

  137. // CHECK:STDOUT:   %Base.elem: type = unbound_element_type %Base, %T.binding.as_type [symbolic = %Base.elem (constants.%Base.elem.b9e)]
    138. 

  138. // CHECK:STDOUT:   %require_complete.loc21_13: <witness> = require_complete_type %T.binding.as_type [symbolic = %require_complete.loc21_13 (constants.%require_complete.1cd)]
    139. 

  139. // CHECK:STDOUT:   %Copy.lookup_impl_witness: <witness> = lookup_impl_witness %T.loc19_15.1, @Copy [symbolic = %Copy.lookup_impl_witness (constants.%Copy.lookup_impl_witness.e15)]
    140. 

  140. // CHECK:STDOUT:   %.loc21_11.6: type = fn_type_with_self_type constants.%Copy.Op.type, %T.loc19_15.1 [symbolic = %.loc21_11.6 (constants.%.427)]
    141. 

  141. // CHECK:STDOUT:   %impl.elem0.loc21_11.2: @AccessBase.%.loc21_11.6 (%.427) = impl_witness_access %Copy.lookup_impl_witness, element0 [symbolic = %impl.elem0.loc21_11.2 (constants.%impl.elem0.168)]
    142. 

  142. // CHECK:STDOUT:   %specific_impl_fn.loc21_11.2: <specific function> = specific_impl_function %impl.elem0.loc21_11.2, @Copy.Op(%T.loc19_15.1) [symbolic = %specific_impl_fn.loc21_11.2 (constants.%specific_impl_fn.2ce)]
    143. 

  143. // CHECK:STDOUT:
    144. 

  144. // CHECK:STDOUT:   fn(%x.param: @AccessBase.%Derived.loc19_42.1 (%Derived.b36)) -> %return.param: @AccessBase.%T.binding.as_type (%T.binding.as_type) {
    145. 

  145. // CHECK:STDOUT:   !entry:
    146. 

  146. // CHECK:STDOUT:     %x.ref: @AccessBase.%Derived.loc19_42.1 (%Derived.b36) = name_ref x, %x
    147. 

  147. // CHECK:STDOUT:     %b.ref: @AccessBase.%Base.elem (%Base.elem.b9e) = name_ref b, @Base.%.loc5 [concrete = @Base.%.loc5]
    148. 

  148. // CHECK:STDOUT:     %.loc21_11.1: ref @AccessBase.%Base (%Base.342) = class_element_access %x.ref, element0
    149. 

  149. // CHECK:STDOUT:     %.loc21_11.2: ref @AccessBase.%Base (%Base.342) = converted %x.ref, %.loc21_11.1
    150. 

  150. // CHECK:STDOUT:     %.loc21_11.3: ref @AccessBase.%T.binding.as_type (%T.binding.as_type) = class_element_access %.loc21_11.2, element0
    151. 

  151. // CHECK:STDOUT:     %.loc21_11.4: @AccessBase.%T.binding.as_type (%T.binding.as_type) = bind_value %.loc21_11.3
    152. 

  152. // CHECK:STDOUT:     %impl.elem0.loc21_11.1: @AccessBase.%.loc21_11.6 (%.427) = impl_witness_access constants.%Copy.lookup_impl_witness.e15, element0 [symbolic = %impl.elem0.loc21_11.2 (constants.%impl.elem0.168)]
    153. 

  153. // CHECK:STDOUT:     %bound_method.loc21_11.1: <bound method> = bound_method %.loc21_11.4, %impl.elem0.loc21_11.1
    154. 

  154. // CHECK:STDOUT:     %specific_impl_fn.loc21_11.1: <specific function> = specific_impl_function %impl.elem0.loc21_11.1, @Copy.Op(constants.%T.be8) [symbolic = %specific_impl_fn.loc21_11.2 (constants.%specific_impl_fn.2ce)]
    155. 

  155. // CHECK:STDOUT:     %bound_method.loc21_11.2: <bound method> = bound_method %.loc21_11.4, %specific_impl_fn.loc21_11.1
    156. 

  156. // CHECK:STDOUT:     <elided>
    157. 

  157. // CHECK:STDOUT:     %.loc21_11.5: init @AccessBase.%T.binding.as_type (%T.binding.as_type) = call %bound_method.loc21_11.2(%.loc21_11.4) to %.loc19_45
    158. 

  158. // CHECK:STDOUT:     return %.loc21_11.5 to %return
    159. 

  159. // CHECK:STDOUT:   }
    160. 

  160. // CHECK:STDOUT: }
    161. 

  161. // CHECK:STDOUT:
    162. 

  162. // CHECK:STDOUT: specific @AccessDerived(constants.%T.be8) {
    163. 

  163. // CHECK:STDOUT:   %T.loc13_18.1 => constants.%T.be8
    164. 

  164. // CHECK:STDOUT:   %T.binding.as_type => constants.%T.binding.as_type
    165. 

  165. // CHECK:STDOUT:   %Derived.loc13_45.1 => constants.%Derived.b36
    166. 

  166. // CHECK:STDOUT:   %pattern_type.loc13_33 => constants.%pattern_type.50f
    167. 

  167. // CHECK:STDOUT:   %pattern_type.loc13_48 => constants.%pattern_type.17e4b7.1
    168. 

  168. // CHECK:STDOUT: }
    169. 

  169. // CHECK:STDOUT:
    170. 

  170. // CHECK:STDOUT: specific @AccessBase(constants.%T.be8) {
    171. 

  171. // CHECK:STDOUT:   %T.loc19_15.1 => constants.%T.be8
    172. 

  172. // CHECK:STDOUT:   %T.binding.as_type => constants.%T.binding.as_type
    173. 

  173. // CHECK:STDOUT:   %Derived.loc19_42.1 => constants.%Derived.b36
    174. 

  174. // CHECK:STDOUT:   %pattern_type.loc19_30 => constants.%pattern_type.50f
    175. 

  175. // CHECK:STDOUT:   %pattern_type.loc19_45 => constants.%pattern_type.17e4b7.1
    176. 

  176. // CHECK:STDOUT: }
    177. 

  177. // CHECK:STDOUT:
    178.