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-rw-r--r--crates/ra_hir/src/ty/snapshots/tests__infer_associated_type_bound.snap10
-rw-r--r--crates/ra_hir/src/ty/snapshots/tests__infer_call_trait_method_on_generic_param_1.snap11
-rw-r--r--crates/ra_hir/src/ty/snapshots/tests__infer_call_trait_method_on_generic_param_2.snap11
-rw-r--r--crates/ra_hir/src/ty/snapshots/tests__infer_from_bound_1.snap17
-rw-r--r--crates/ra_hir/src/ty/snapshots/tests__infer_from_bound_2.snap18
-rw-r--r--crates/ra_hir/src/ty/snapshots/tests__infer_project_associated_type.snap12
-rw-r--r--crates/ra_hir/src/ty/snapshots/tests__infer_trait_assoc_method.snap17
-rw-r--r--crates/ra_hir/src/ty/snapshots/tests__infer_trait_method_generic_1.snap11
-rw-r--r--crates/ra_hir/src/ty/snapshots/tests__infer_trait_method_generic_2.snap13
-rw-r--r--crates/ra_hir/src/ty/snapshots/tests__infer_trait_method_scoped.snap15
-rw-r--r--crates/ra_hir/src/ty/snapshots/tests__infer_trait_method_simple.snap14
-rw-r--r--crates/ra_hir/src/ty/snapshots/tests__infer_with_multiple_trait_impls.snap19
-rw-r--r--crates/ra_hir/src/ty/tests.rs235
13 files changed, 403 insertions, 0 deletions
diff --git a/crates/ra_hir/src/ty/snapshots/tests__infer_associated_type_bound.snap b/crates/ra_hir/src/ty/snapshots/tests__infer_associated_type_bound.snap
new file mode 100644
index 000000000..4dbde99f9
--- /dev/null
+++ b/crates/ra_hir/src/ty/snapshots/tests__infer_associated_type_bound.snap
@@ -0,0 +1,10 @@
1---
2created: "2019-03-02T13:52:02.767222917Z"
3creator: [email protected]
4source: crates/ra_hir/src/ty/tests.rs
5expression: "&result"
6---
7[67; 100) '{ ...own; }': ()
8[77; 78) 'y': [unknown]
9[90; 97) 'unknown': [unknown]
10
diff --git a/crates/ra_hir/src/ty/snapshots/tests__infer_call_trait_method_on_generic_param_1.snap b/crates/ra_hir/src/ty/snapshots/tests__infer_call_trait_method_on_generic_param_1.snap
new file mode 100644
index 000000000..c56e6ba42
--- /dev/null
+++ b/crates/ra_hir/src/ty/snapshots/tests__infer_call_trait_method_on_generic_param_1.snap
@@ -0,0 +1,11 @@
1---
2created: "2019-03-02T13:49:53.509955706Z"
3creator: [email protected]
4source: crates/ra_hir/src/ty/tests.rs
5expression: "&result"
6---
7[59; 60) 't': T
8[65; 84) '{ ...d(); }': ()
9[71; 72) 't': T
10[71; 81) 't.method()': [unknown]
11
diff --git a/crates/ra_hir/src/ty/snapshots/tests__infer_call_trait_method_on_generic_param_2.snap b/crates/ra_hir/src/ty/snapshots/tests__infer_call_trait_method_on_generic_param_2.snap
new file mode 100644
index 000000000..7791a57da
--- /dev/null
+++ b/crates/ra_hir/src/ty/snapshots/tests__infer_call_trait_method_on_generic_param_2.snap
@@ -0,0 +1,11 @@
1---
2created: "2019-03-02T13:49:53.477633667Z"
3creator: [email protected]
4source: crates/ra_hir/src/ty/tests.rs
5expression: "&result"
6---
7[66; 67) 't': T
8[72; 91) '{ ...d(); }': ()
9[78; 79) 't': T
10[78; 88) 't.method()': [unknown]
11
diff --git a/crates/ra_hir/src/ty/snapshots/tests__infer_from_bound_1.snap b/crates/ra_hir/src/ty/snapshots/tests__infer_from_bound_1.snap
new file mode 100644
index 000000000..c8d8e9806
--- /dev/null
+++ b/crates/ra_hir/src/ty/snapshots/tests__infer_from_bound_1.snap
@@ -0,0 +1,17 @@
1---
2created: "2019-03-02T13:49:53.558635265Z"
3creator: [email protected]
4source: crates/ra_hir/src/ty/tests.rs
5expression: "&result"
6---
7[86; 87) 't': T
8[92; 94) '{}': ()
9[105; 144) '{ ...(s); }': ()
10[115; 116) 's': S<[unknown]>
11[119; 120) 'S': S<[unknown]>(T) -> S<T>
12[119; 129) 'S(unknown)': S<[unknown]>
13[121; 128) 'unknown': [unknown]
14[135; 138) 'foo': fn foo<S<[unknown]>>(T) -> ()
15[135; 141) 'foo(s)': ()
16[139; 140) 's': S<[unknown]>
17
diff --git a/crates/ra_hir/src/ty/snapshots/tests__infer_from_bound_2.snap b/crates/ra_hir/src/ty/snapshots/tests__infer_from_bound_2.snap
new file mode 100644
index 000000000..37def29c3
--- /dev/null
+++ b/crates/ra_hir/src/ty/snapshots/tests__infer_from_bound_2.snap
@@ -0,0 +1,18 @@
1---
2created: "2019-03-02T13:49:53.572131028Z"
3creator: [email protected]
4source: crates/ra_hir/src/ty/tests.rs
5expression: "&result"
6---
7[87; 88) 't': T
8[98; 100) '{}': ()
9[111; 163) '{ ...(s); }': ()
10[121; 122) 's': S<[unknown]>
11[125; 126) 'S': S<[unknown]>(T) -> S<T>
12[125; 135) 'S(unknown)': S<[unknown]>
13[127; 134) 'unknown': [unknown]
14[145; 146) 'x': u32
15[154; 157) 'foo': fn foo<u32, S<[unknown]>>(T) -> U
16[154; 160) 'foo(s)': u32
17[158; 159) 's': S<[unknown]>
18
diff --git a/crates/ra_hir/src/ty/snapshots/tests__infer_project_associated_type.snap b/crates/ra_hir/src/ty/snapshots/tests__infer_project_associated_type.snap
new file mode 100644
index 000000000..6d5331799
--- /dev/null
+++ b/crates/ra_hir/src/ty/snapshots/tests__infer_project_associated_type.snap
@@ -0,0 +1,12 @@
1---
2created: "2019-03-02T13:49:53.680954394Z"
3creator: [email protected]
4source: crates/ra_hir/src/ty/tests.rs
5expression: "&result"
6---
7[108; 181) '{ ...ter; }': ()
8[118; 119) 'x': i32
9[145; 146) '1': i32
10[156; 157) 'y': [unknown]
11[169; 178) 'no_matter': [unknown]
12
diff --git a/crates/ra_hir/src/ty/snapshots/tests__infer_trait_assoc_method.snap b/crates/ra_hir/src/ty/snapshots/tests__infer_trait_assoc_method.snap
new file mode 100644
index 000000000..c09e1cf44
--- /dev/null
+++ b/crates/ra_hir/src/ty/snapshots/tests__infer_trait_assoc_method.snap
@@ -0,0 +1,17 @@
1---
2created: "2019-03-02T13:49:53.756157395Z"
3creator: [email protected]
4source: crates/ra_hir/src/ty/tests.rs
5expression: "&result"
6---
7[87; 193) '{ ...t(); }': ()
8[97; 99) 's1': S
9[105; 121) 'Defaul...efault': [unknown]
10[105; 123) 'Defaul...ault()': S
11[133; 135) 's2': [unknown]
12[138; 148) 'S::default': [unknown]
13[138; 150) 'S::default()': [unknown]
14[160; 162) 's3': [unknown]
15[165; 188) '<S as ...efault': [unknown]
16[165; 190) '<S as ...ault()': [unknown]
17
diff --git a/crates/ra_hir/src/ty/snapshots/tests__infer_trait_method_generic_1.snap b/crates/ra_hir/src/ty/snapshots/tests__infer_trait_method_generic_1.snap
new file mode 100644
index 000000000..a71dbaf00
--- /dev/null
+++ b/crates/ra_hir/src/ty/snapshots/tests__infer_trait_method_generic_1.snap
@@ -0,0 +1,11 @@
1---
2created: "2019-03-02T13:49:53.771466423Z"
3creator: [email protected]
4source: crates/ra_hir/src/ty/tests.rs
5expression: "&result"
6---
7[33; 37) 'self': &[unknown]
8[92; 111) '{ ...d(); }': ()
9[98; 99) 'S': S
10[98; 108) 'S.method()': [unknown]
11
diff --git a/crates/ra_hir/src/ty/snapshots/tests__infer_trait_method_generic_2.snap b/crates/ra_hir/src/ty/snapshots/tests__infer_trait_method_generic_2.snap
new file mode 100644
index 000000000..4b28cb32a
--- /dev/null
+++ b/crates/ra_hir/src/ty/snapshots/tests__infer_trait_method_generic_2.snap
@@ -0,0 +1,13 @@
1---
2created: "2019-03-02T13:49:53.765202736Z"
3creator: [email protected]
4source: crates/ra_hir/src/ty/tests.rs
5expression: "&result"
6---
7[33; 37) 'self': &[unknown]
8[102; 127) '{ ...d(); }': ()
9[108; 109) 'S': S<u32>(T) -> S<T>
10[108; 115) 'S(1u32)': S<u32>
11[108; 124) 'S(1u32...thod()': [unknown]
12[110; 114) '1u32': u32
13
diff --git a/crates/ra_hir/src/ty/snapshots/tests__infer_trait_method_scoped.snap b/crates/ra_hir/src/ty/snapshots/tests__infer_trait_method_scoped.snap
new file mode 100644
index 000000000..f2cce656d
--- /dev/null
+++ b/crates/ra_hir/src/ty/snapshots/tests__infer_trait_method_scoped.snap
@@ -0,0 +1,15 @@
1---
2created: "2019-03-02T15:41:07.568155273Z"
3creator: [email protected]
4source: crates/ra_hir/src/ty/tests.rs
5expression: "&result"
6---
7[63; 67) 'self': &[unknown]
8[169; 173) 'self': &[unknown]
9[300; 337) '{ ... }': ()
10[310; 311) 'S': S
11[310; 320) 'S.method()': [unknown]
12[416; 454) '{ ... }': ()
13[426; 427) 'S': S
14[426; 436) 'S.method()': [unknown]
15
diff --git a/crates/ra_hir/src/ty/snapshots/tests__infer_trait_method_simple.snap b/crates/ra_hir/src/ty/snapshots/tests__infer_trait_method_simple.snap
new file mode 100644
index 000000000..22e83722d
--- /dev/null
+++ b/crates/ra_hir/src/ty/snapshots/tests__infer_trait_method_simple.snap
@@ -0,0 +1,14 @@
1---
2created: "2019-03-02T15:41:07.562949721Z"
3creator: [email protected]
4source: crates/ra_hir/src/ty/tests.rs
5expression: "&result"
6---
7[31; 35) 'self': &[unknown]
8[110; 114) 'self': &[unknown]
9[170; 228) '{ ...i128 }': ()
10[176; 178) 'S1': S1
11[176; 187) 'S1.method()': [unknown]
12[203; 205) 'S2': S2
13[203; 214) 'S2.method()': [unknown]
14
diff --git a/crates/ra_hir/src/ty/snapshots/tests__infer_with_multiple_trait_impls.snap b/crates/ra_hir/src/ty/snapshots/tests__infer_with_multiple_trait_impls.snap
new file mode 100644
index 000000000..82c8bae58
--- /dev/null
+++ b/crates/ra_hir/src/ty/snapshots/tests__infer_with_multiple_trait_impls.snap
@@ -0,0 +1,19 @@
1---
2created: "2019-03-02T13:49:53.860659428Z"
3creator: [email protected]
4source: crates/ra_hir/src/ty/tests.rs
5expression: "&result"
6---
7[29; 33) 'self': [unknown]
8[107; 198) '{ ...(S); }': ()
9[117; 118) 'x': u32
10[126; 127) 'S': S
11[126; 134) 'S.into()': u32
12[144; 145) 'y': u64
13[153; 154) 'S': S
14[153; 161) 'S.into()': u64
15[171; 172) 'z': [unknown]
16[175; 192) 'Into::...::into': [unknown]
17[175; 195) 'Into::...nto(S)': [unknown]
18[193; 194) 'S': S
19
diff --git a/crates/ra_hir/src/ty/tests.rs b/crates/ra_hir/src/ty/tests.rs
index 2fdfb54f4..c1bd8d423 100644
--- a/crates/ra_hir/src/ty/tests.rs
+++ b/crates/ra_hir/src/ty/tests.rs
@@ -1043,6 +1043,241 @@ fn test() {
1043 ); 1043 );
1044} 1044}
1045 1045
1046#[test]
1047fn infer_trait_method_simple() {
1048 // the trait implementation is intentionally incomplete -- it shouldn't matter
1049 check_inference(
1050 "infer_trait_method_simple",
1051 r#"
1052trait Trait1 {
1053 fn method(&self) -> u32;
1054}
1055struct S1;
1056impl Trait1 for S1 {}
1057trait Trait2 {
1058 fn method(&self) -> i128;
1059}
1060struct S2;
1061impl Trait2 for S2 {}
1062fn test() {
1063 S1.method(); // -> u32
1064 S2.method(); // -> i128
1065}
1066"#,
1067 );
1068}
1069
1070#[test]
1071fn infer_trait_method_scoped() {
1072 // the trait implementation is intentionally incomplete -- it shouldn't matter
1073 check_inference(
1074 "infer_trait_method_scoped",
1075 r#"
1076struct S;
1077mod foo {
1078 pub trait Trait1 {
1079 fn method(&self) -> u32;
1080 }
1081 impl Trait1 for super::S {}
1082}
1083mod bar {
1084 pub trait Trait2 {
1085 fn method(&self) -> i128;
1086 }
1087 impl Trait2 for super::S {}
1088}
1089
1090mod foo_test {
1091 use super::S;
1092 use super::foo::Trait1;
1093 fn test() {
1094 S.method(); // -> u32
1095 }
1096}
1097
1098mod bar_test {
1099 use super::S;
1100 use super::bar::Trait2;
1101 fn test() {
1102 S.method(); // -> i128
1103 }
1104}
1105"#,
1106 );
1107}
1108
1109#[test]
1110fn infer_trait_method_generic_1() {
1111 // the trait implementation is intentionally incomplete -- it shouldn't matter
1112 check_inference(
1113 "infer_trait_method_generic_1",
1114 r#"
1115trait Trait<T> {
1116 fn method(&self) -> T;
1117}
1118struct S;
1119impl Trait<u32> for S {}
1120fn test() {
1121 S.method();
1122}
1123"#,
1124 );
1125}
1126
1127#[test]
1128fn infer_trait_method_generic_2() {
1129 // the trait implementation is intentionally incomplete -- it shouldn't matter
1130 check_inference(
1131 "infer_trait_method_generic_2",
1132 r#"
1133trait Trait<T> {
1134 fn method(&self) -> T;
1135}
1136struct S<T>(T);
1137impl<U> Trait<U> for S<U> {}
1138fn test() {
1139 S(1u32).method();
1140}
1141"#,
1142 );
1143}
1144
1145#[test]
1146fn infer_trait_assoc_method() {
1147 check_inference(
1148 "infer_trait_assoc_method",
1149 r#"
1150trait Default {
1151 fn default() -> Self;
1152}
1153struct S;
1154impl Default for S {}
1155fn test() {
1156 let s1: S = Default::default();
1157 let s2 = S::default();
1158 let s3 = <S as Default>::default();
1159}
1160"#,
1161 );
1162}
1163
1164#[test]
1165fn infer_from_bound_1() {
1166 check_inference(
1167 "infer_from_bound_1",
1168 r#"
1169trait Trait<T> {}
1170struct S<T>(T);
1171impl<U> Trait<U> for S<U> {}
1172fn foo<T: Trait<u32>>(t: T) {}
1173fn test() {
1174 let s = S(unknown);
1175 foo(s);
1176}
1177"#,
1178 );
1179}
1180
1181#[test]
1182fn infer_from_bound_2() {
1183 check_inference(
1184 "infer_from_bound_2",
1185 r#"
1186trait Trait<T> {}
1187struct S<T>(T);
1188impl<U> Trait<U> for S<U> {}
1189fn foo<U, T: Trait<U>>(t: T) -> U {}
1190fn test() {
1191 let s = S(unknown);
1192 let x: u32 = foo(s);
1193}
1194"#,
1195 );
1196}
1197
1198#[test]
1199fn infer_call_trait_method_on_generic_param_1() {
1200 check_inference(
1201 "infer_call_trait_method_on_generic_param_1",
1202 r#"
1203trait Trait {
1204 fn method() -> u32;
1205}
1206fn test<T: Trait>(t: T) {
1207 t.method();
1208}
1209"#,
1210 );
1211}
1212
1213#[test]
1214fn infer_call_trait_method_on_generic_param_2() {
1215 check_inference(
1216 "infer_call_trait_method_on_generic_param_2",
1217 r#"
1218trait Trait<T> {
1219 fn method() -> T;
1220}
1221fn test<U, T: Trait<U>>(t: T) {
1222 t.method();
1223}
1224"#,
1225 );
1226}
1227
1228#[test]
1229fn infer_with_multiple_trait_impls() {
1230 check_inference(
1231 "infer_with_multiple_trait_impls",
1232 r#"
1233trait Into<T> {
1234 fn into(self) -> T;
1235}
1236struct S;
1237impl Into<u32> for S;
1238impl Into<u64> for S;
1239fn test() {
1240 let x: u32 = S.into();
1241 let y: u64 = S.into();
1242 let z = Into::<u64>::into(S);
1243}
1244"#,
1245 );
1246}
1247
1248#[test]
1249fn infer_project_associated_type() {
1250 check_inference(
1251 "infer_project_associated_type",
1252 r#"
1253trait Iterable {
1254 type Item;
1255}
1256struct S;
1257impl Iterable for S { type Item = u32; }
1258fn test<T: Iterable>() {
1259 let x: <S as Iterable>::Item = 1;
1260 let y: T::Item = no_matter;
1261}
1262"#,
1263 );
1264}
1265
1266#[test]
1267fn infer_associated_type_bound() {
1268 check_inference(
1269 "infer_associated_type_bound",
1270 r#"
1271trait Iterable {
1272 type Item;
1273}
1274fn test<T: Iterable<Item=u32>>() {
1275 let y: T::Item = unknown;
1276}
1277"#,
1278 );
1279}
1280
1046fn type_at_pos(db: &MockDatabase, pos: FilePosition) -> String { 1281fn type_at_pos(db: &MockDatabase, pos: FilePosition) -> String {
1047 let func = source_binder::function_from_position(db, pos).unwrap(); 1282 let func = source_binder::function_from_position(db, pos).unwrap();
1048 let body_source_map = func.body_source_map(db); 1283 let body_source_map = func.body_source_map(db);