thrift/test/EnumTest.thrift
Jens Geyer ae0b22cc29 THRIFT-2513 clean up enum value assignment
Patch: Dave Watson

This closes #88

Summary:
Clean up how enum values are handled if an integer value is not
explicitly specified in the thrift file.

For example, the following used to be a compile error, but
works now:

  enum MyEnum {
	SOMEVALUE
  }
  struct MyStruct {
	1: MyEnum e = SOMEVALUE
  }

This change also cleans up some of the error handling with out-of-range
values.  Previously thrift simply issued a warning for enum values that
didn't fit in an i32, but serialized them as i32 anyway.  Now
out-of-range enum values result in a compile failure.

Test Plan:
Included a new unit test to verify the assignment of enum values.  I
also verified that g++ makes the same enum value assignments when
compiling these enums as C++ code.
2014-09-04 23:40:14 +02:00

71 lines
1.6 KiB
Thrift

/*
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*
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*
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*/
enum MyEnum1 {
ME1_0 = 0,
ME1_1 = 1,
ME1_2,
ME1_3,
ME1_5 = 5,
ME1_6,
}
enum MyEnum2 {
ME2_0,
ME2_1,
ME2_2,
}
enum MyEnum3 {
ME3_0,
ME3_1,
ME3_N2 = -2,
ME3_N1,
ME3_D0,
ME3_D1,
ME3_9 = 9,
ME3_10,
}
enum MyEnum4 {
ME4_A = 0x7ffffffd
ME4_B
ME4_C
// attempting to define another enum value here fails
// with an overflow error, as we overflow values that can be
// represented with an i32.
}
enum MyEnum5 {
// attempting to explicitly use values out of the i32 range will also fail
// ME5_A = 0x80000000,
// ME5_B = 0x100000000,
}
struct MyStruct {
1: MyEnum2 me2_2 = MyEnum1.ME2_2
2: MyEnum3 me3_n2 = MyEnum3.ME3_N2
3: MyEnum3 me3_d1 = MyEnum3.ME3_D1
}