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Add support for compound assignment and increment (#2526)

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Add support for user-defined assignment, as well as compound assignment and increment, following the design direction in pending proposal #2511.

Some of this isn't fully testable yet: because explorer doesn't properly support `impl` specialization, the blanket `impl`s in the prelude prevent types from customizing assignment.
This commit is contained in:
Richard Smith
2023-01-20 18:48:13 -08:00
committed by GitHub
parent f1a0645551
commit 2fd7e2b65d
32 changed files with 975 additions and 215 deletions
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explorer/testdata/basic_syntax/fail_missing_var.carbon
Vendored
+1 -1
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@@ -10,7 +10,7 @@ package ExplorerTest api;
fn Main() -> i32 {
// error
// CHECK:STDERR: SYNTAX ERROR: {{.*}}/explorer/testdata/basic_syntax/fail_missing_var.carbon:[[@LINE+1]]: syntax error, unexpected COLON, expecting SLASH or binary *
// CHECK:STDERR: SYNTAX ERROR: {{.*}}/explorer/testdata/basic_syntax/fail_missing_var.carbon:[[@LINE+1]]: syntax error, unexpected COLON
x : i32;
return 1;
}
explorer/testdata/basic_syntax/fail_var_named_self.carbon
Vendored
+1 -1
View File
@@ -12,7 +12,7 @@ fn Main() -> i32 {
// Error: can't use keyword `Self` as the name of a variable.
// TODO: Current error message is unclear, better would be to say
// something like: unexpected `Self`, expecting identifier
// CHECK:STDERR: SYNTAX ERROR: {{.*}}/explorer/testdata/basic_syntax/fail_var_named_self.carbon:[[@LINE+1]]: syntax error, unexpected COLON, expecting SLASH or binary *
// CHECK:STDERR: SYNTAX ERROR: {{.*}}/explorer/testdata/basic_syntax/fail_var_named_self.carbon:[[@LINE+1]]: syntax error, unexpected COLON, expecting EQUAL or SEMICOLON
var Self : i32 = 0;
return Self;
}