const initialization: a few fixes

sway-core/src/ir_generation/compile.rs

@@ -219,7 +219,7 @@ fn compile_fn_with_args(
     // may remain within the function scope.
     let mut compiler = FnCompiler::new(context, module, func);
 
-    let mut ret_val = compiler.compile_code_block(context, body)?;
+    let mut ret_val = compiler.compile_code_block(context, module, body)?;
 
     // Special case: if the return type is unit but the return value type is not, then we have an
     // implicit return from the last expression in the code block having a semi-colon.  This isn't

sway-core/src/semantic_analysis/ast_node/expression/typed_expression/method_application.rs

@@ -193,14 +193,21 @@ pub(crate) fn type_check_method_application(
             warnings,
             errors
         );
-        let variable_decl = check!(
-            unknown_decl.expect_variable().cloned(),
-            return err(warnings, errors),
-            warnings,
-            errors
-        );
 
-        if !variable_decl.is_mutable.is_mutable() && *is_mutable {
+        let is_decl_mutable = match unknown_decl {
+            TypedDeclaration::ConstantDeclaration(_) => false,
+            _ => {
+                let variable_decl = check!(
+                    unknown_decl.expect_variable().cloned(),
+                    return err(warnings, errors),
+                    warnings,
+                    errors
+                );
+                variable_decl.is_mutable.is_mutable()
+            }
+        };
+
+        if !is_decl_mutable && *is_mutable {
             errors.push(CompileError::MethodRequiresMutableSelf {
                 method_name: method_name.easy_name(),
                 variable_name: name.clone(),

sway-core/src/semantic_analysis/ast_node/mod.rs

@@ -303,25 +303,16 @@ impl TypedAstNode {
                             value,
                             visibility,
                         }) => {
-                            let result = type_check_ascribed_expr(
-                                ctx.by_ref(),
-                                type_ascription.clone(),
-                                value,
-                            );
+                            let result =
+                                type_check_ascribed_expr(ctx.by_ref(), type_ascription, value);
                             is_screaming_snake_case(&name).ok(&mut warnings, &mut errors);
                             let value =
                                 check!(result, error_recovery_expr(name.span()), warnings, errors);
                             let typed_const_decl =
-                                TypedDeclaration::VariableDeclaration(TypedVariableDeclaration {
+                                TypedDeclaration::ConstantDeclaration(TypedConstantDeclaration {
                                     name: name.clone(),
-                                    body: value,
-                                    is_mutable: if visibility.is_public() {
-                                        VariableMutability::ExportedConst
-                                    } else {
-                                        VariableMutability::Immutable
-                                    },
-                                    const_decl_origin: true,
-                                    type_ascription: insert_type(type_ascription),
+                                    value,
+                                    visibility,
                                 });
                             ctx.namespace.insert_symbol(name, typed_const_decl.clone());
                             typed_const_decl

test/src/e2e_vm_tests/test_programs/should_fail/const_nonconst_init/Forc.lock

@@ -0,0 +1,9 @@
+[[package]]
+name = 'const_nonconst_init'
+source = 'root'
+dependencies = ['core']
+
+[[package]]
+name = 'core'
+source = 'path+from-root-E57A3612ABF8CF11'
+dependencies = []

test/src/e2e_vm_tests/test_programs/should_fail/const_nonconst_init/Forc.toml

@@ -0,0 +1,8 @@
+[project]
+authors = ["Fuel Labs <contact@fuel.sh>"]
+entry = "main.sw"
+license = "Apache-2.0"
+name = "const_nonconst_init"
+
+[dependencies]
+core = { path = "../../../../../../sway-lib-core" }

test/src/e2e_vm_tests/test_programs/should_fail/const_nonconst_init/src/main.sw

@@ -0,0 +1,10 @@
+script;
+
+fn bla(x: u64) -> u64 {
+    x + 1
+}
+
+fn main() -> u64 {
+    const X = bla(0);
+    X
+}

test/src/e2e_vm_tests/test_programs/should_fail/const_nonconst_init/test.toml

@@ -0,0 +1,4 @@
+category = "fail"
+
+# check: $()const X = bla(0);
+# check-next: $()Could not evaluate initializer to a const declaration.

test/src/e2e_vm_tests/test_programs/should_pass/language/const_inits/src/main.sw

@@ -36,17 +36,22 @@ const EN1c = En1::NoVal;
 const ETH_ID0_VALUE = ETH_ID0.value;
 const TUP1_idx2 = TUP1.2;
 
+const INT1 = 1;
+
 fn main() -> u64 {
+    const int1 = 1;
+    assert(int1 == INT1);
+
     // initialization through function applications.
-    let eth_id0 = ~ContractId::from(0x0000000000000000000000000000000000000000000000000000000000000000);
-    let eth_id1 = ~ContractId::from(0x0000000000000000000000000000000000000000000000000000000000000001);
+    const eth_id0 = ~ContractId::from(0x0000000000000000000000000000000000000000000000000000000000000000);
+    const eth_id1 = ~ContractId::from(0x0000000000000000000000000000000000000000000000000000000000000001);
     assert(eth_id0 == ETH_ID0 && eth_id1 == ETH_ID1);
 
     // tuples and arrays.
-    let t1 = (2, 1, 21);
+    const t1 = (2, 1, 21);
     assert(t1.0 == TUP1.0 && t1.1 == TUP1.1 && t1.2 == TUP1.2);
     assert(t1.0 == TUP2.0 && t1.1 == TUP2.1 && t1.2 == TUP2.2);
-    let a1 = [1, 2, 3];
+    const a1 = [1, 2, 3];
     assert(a1[0] == ARR1[0] && a1[1] == ARR1[1] && a1[2] == ARR1[2]);
     assert(a1[0] == ARR2[0] && a1[1] == ARR2[1] && a1[2] == ARR2[2]);