carbon-language/carbon-lang
1
0
Fork 0
mirror of https://github.com/carbon-language/carbon-lang.git synced 2026-10-05 22:02:55 +01:00
Code Issues Packages Projects Releases 10 Wiki Activity

Support struct implicit conversions in type-checking (#870)

Browse Source 
I should emphasize that I am **completely cheating** here. This PR does not add support for actually _performing_  implicit conversions at run time, because the AST doesn't yet contain the necessary type information. At run time, code like `var p: Point = {.x = 1, .y = 2};` directly initializes the name `p` with the _struct_ value `{.x = 1, .y = 2}`; no object of type `Point` is actually created. I'm only getting away with this because we don't yet have any tests that can tell the difference.

Co-authored-by: Jon Meow <46229924+jonmeow@users.noreply.github.com>
This commit is contained in:
Geoff Romer
2021-10-12 10:27:20 -07:00
committed by GitHub
co-authored by Jon Meow
parent a99d882223
commit bc5a42211b
14 changed files with 226 additions and 60 deletions
Download Patch File Download Diff File Expand all files Collapse all files
executable_semantics/testdata/class/fail_field_missing.carbon
Vendored
+3 -4
View File
@@ -7,9 +7,7 @@
// RUN: not executable_semantics --trace %s 2>&1 | \
// RUN: FileCheck --match-full-lines --allow-unused-prefixes %s
// AUTOUPDATE: executable_semantics %s
// CHECK: COMPILATION ERROR: {{.*}}/executable_semantics/testdata/class/fail_field_missing.carbon:22: type error in call
// CHECK: expected: (x = i32, y = i32)
// CHECK: actual: (x = i32)
// CHECK: COMPILATION ERROR: {{.*}}/executable_semantics/testdata/class/fail_field_missing.carbon:20: type error in name binding: '{.x: i32}' is not implicitly convertible to 'class Point'
package ExecutableSemanticsTest api;
@@ -19,5 +17,6 @@ class Point {
}
fn main() -> i32 {
return Point(.x = 1).x - 1;
var p: Point = {.x = 1};
return p.x - 1;
}