Support for Solidity 0.8.22

package.json

@@ -27,25 +27,25 @@
         "prepare": "npm run build"
     },
     "dependencies": {
-        "axios": "^1.5.1",
+        "axios": "^1.6.0",
         "commander": "^11.1.0",
         "decimal.js": "^10.4.3",
         "findup-sync": "^5.0.0",
         "fs-extra": "^11.1.1",
         "jsel": "^1.1.6",
         "semver": "^7.5.4",
-        "solc": "^0.8.21",
+        "solc": "^0.8.22",
         "src-location": "^1.1.0",
-        "web3-eth-abi": "^4.1.3"
+        "web3-eth-abi": "^4.1.4"
     },
     "devDependencies": {
         "@types/fs-extra": "^11.0.3",
         "@types/mocha": "^10.0.3",
         "@types/node": "^16.18.59",
         "@types/semver": "^7.5.4",
-        "@typescript-eslint/eslint-plugin": "^6.8.0",
-        "@typescript-eslint/parser": "^6.8.0",
-        "eslint": "^8.51.0",
+        "@typescript-eslint/eslint-plugin": "^6.9.1",
+        "@typescript-eslint/parser": "^6.9.1",
+        "eslint": "^8.52.0",
         "eslint-config-prettier": "^9.0.0",
         "eslint-plugin-prettier": "^5.0.1",
         "expect": "^29.7.0",
@@ -55,7 +55,7 @@
         "prettier": "3.0.3",
         "ts-node": "^10.9.1",
         "ts-pegjs": "^3.1.0",
-        "typedoc": "^0.25.2",
+        "typedoc": "^0.25.3",
         "typescript": "^5.2.2"
     },
     "homepage": "https://consensys.github.io/solc-typed-ast",

src/ast/definitions.ts

@@ -159,6 +159,7 @@ function* lookupInSourceUnit(
                 child instanceof ContractDefinition ||
                 child instanceof StructDefinition ||
                 child instanceof EnumDefinition ||
+                child instanceof EventDefinition ||
                 child instanceof ErrorDefinition ||
                 child instanceof UserDefinedValueTypeDefinition) &&
             child.name === name

src/ast/implementation/meta/source_unit.ts

@@ -1,5 +1,6 @@
 import { ABIEncoderVersion, ABIEncoderVersions } from "../../../types";
 import { ASTNode, ASTNodeWithChildren } from "../../ast_node";
+import { EventDefinition } from "../declaration";
 import { ContractDefinition } from "../declaration/contract_definition";
 import { EnumDefinition } from "../declaration/enum_definition";
 import { ErrorDefinition } from "../declaration/error_definition";
@@ -17,6 +18,7 @@ export type ExportedSymbol =
     | EnumDefinition
     | ErrorDefinition
     | FunctionDefinition
+    | EventDefinition
     | UserDefinedValueTypeDefinition
     | VariableDeclaration
     | ImportDirective;
@@ -78,89 +80,99 @@ export class SourceUnit extends ASTNodeWithChildren<ASTNode> {
      */
     get vPragmaDirectives(): readonly PragmaDirective[] {
         return this.ownChildren.filter(
-            (node) => node instanceof PragmaDirective
-        ) as PragmaDirective[];
+            (node): node is PragmaDirective => node instanceof PragmaDirective
+        );
     }
 
     /**
      * References to import directives
      */
     get vImportDirectives(): readonly ImportDirective[] {
         return this.ownChildren.filter(
-            (node) => node instanceof ImportDirective
-        ) as ImportDirective[];
+            (node): node is ImportDirective => node instanceof ImportDirective
+        );
     }
 
     /**
      * References to contract definitions
      */
     get vContracts(): readonly ContractDefinition[] {
         return this.ownChildren.filter(
-            (node) => node instanceof ContractDefinition
-        ) as ContractDefinition[];
+            (node): node is ContractDefinition => node instanceof ContractDefinition
+        );
     }
 
     /**
      * References to file-level enum definitions
      */
     get vEnums(): readonly EnumDefinition[] {
         return this.ownChildren.filter(
-            (node) => node instanceof EnumDefinition
-        ) as EnumDefinition[];
+            (node): node is EnumDefinition => node instanceof EnumDefinition
+        );
     }
 
     /**
      * References to file-level error definitions
      */
     get vErrors(): readonly ErrorDefinition[] {
         return this.ownChildren.filter(
-            (node) => node instanceof ErrorDefinition
-        ) as ErrorDefinition[];
+            (node): node is ErrorDefinition => node instanceof ErrorDefinition
+        );
     }
 
     /**
      * References to file-level struct definitions
      */
     get vStructs(): readonly StructDefinition[] {
         return this.ownChildren.filter(
-            (node) => node instanceof StructDefinition
-        ) as StructDefinition[];
+            (node): node is StructDefinition => node instanceof StructDefinition
+        );
     }
 
     /**
      * References to file-level function definitions (free functions)
      */
     get vFunctions(): readonly FunctionDefinition[] {
         return this.ownChildren.filter(
-            (node) => node instanceof FunctionDefinition
-        ) as FunctionDefinition[];
+            (node): node is FunctionDefinition => node instanceof FunctionDefinition
+        );
+    }
+
+    /**
+     * References to file-level event definitions
+     */
+    get vEvents(): readonly EventDefinition[] {
+        return this.ownChildren.filter(
+            (node): node is EventDefinition => node instanceof EventDefinition
+        );
     }
 
     /**
      * References to file-level constant variable definitions
      */
     get vVariables(): readonly VariableDeclaration[] {
         return this.ownChildren.filter(
-            (node) => node instanceof VariableDeclaration
-        ) as VariableDeclaration[];
+            (node): node is VariableDeclaration => node instanceof VariableDeclaration
+        );
     }
 
     /**
      * References to file-level user-defined value type definitions
      */
     get vUserDefinedValueTypes(): readonly UserDefinedValueTypeDefinition[] {
         return this.ownChildren.filter(
-            (node) => node instanceof UserDefinedValueTypeDefinition
-        ) as UserDefinedValueTypeDefinition[];
+            (node): node is UserDefinedValueTypeDefinition =>
+                node instanceof UserDefinedValueTypeDefinition
+        );
     }
 
     /**
      * References to file-level using-for directives
      */
     get vUsingForDirectives(): readonly UsingForDirective[] {
         return this.ownChildren.filter(
-            (node) => node instanceof UsingForDirective
-        ) as UsingForDirective[];
+            (node): node is UsingForDirective => node instanceof UsingForDirective
+        );
     }
 
     /**

src/ast/writing/ast_mapping.ts

@@ -1466,7 +1466,12 @@ class SourceUnitWriter extends ASTNodeWriter {
             result.push(...flatten(node.vVariables.map((n) => [...writeFn(n), ";", wrap])), wrap);
         }
 
-        const otherDefs = [...node.vErrors, ...node.vFunctions, ...node.vContracts];
+        const otherDefs = [
+            ...node.vErrors,
+            ...node.vEvents,
+            ...node.vFunctions,
+            ...node.vContracts
+        ];
 
         if (otherDefs.length > 0) {
             result.push(...flatJoin(otherDefs.map(writeLineFn), wrap));

src/compile/constants.ts

@@ -76,7 +76,8 @@ export const CompilerVersions08 = [
     "0.8.18",
     "0.8.19",
     "0.8.20",
-    "0.8.21"
+    "0.8.21",
+    "0.8.22"
 ];
 
 export const CompilerSeries = [

src/compile/inference/file_level_definitions.pegjs

@@ -16,6 +16,7 @@ FileLevelDefinition =
     / FreeFunction
     / ContractDefinition
     / EnumDef
+    / EventDef
     / ErrorDef
     / StructDef
     / UserValueTypeDef
@@ -143,6 +144,18 @@ EnumDef = ENUM __ name: Identifier __ body: EnumDefBody {
     } as FLEnumDefinition;
 }
 
+// ==== Event
+
+EventArgs = LPAREN __ ParenSoup __ RPAREN { return text(); }
+EventDef = EVENT __ name: Identifier __ args: EventArgs __ SEMICOLON {
+    return {
+        kind: FileLevelNodeKind.Event,
+        location: location(),
+        name,
+        args 
+    } as FLEventDefinition;
+}
+
 // ==== Error
 
 ErrorArgs = LPAREN __ ParenSoup __ RPAREN { return text(); }
@@ -323,6 +336,7 @@ TYPE = "type"
 RETURNS = "returns"
 PRAGMA = "pragma"
 ERROR = "error"
+EVENT = "event"
 USING = "using"
 FOR = "for"
 GLOBAL = "global"

src/compile/inference/file_level_definitions_parser_header.ts

@@ -9,6 +9,7 @@ export enum FileLevelNodeKind {
     Struct = "struct",
     Enum = "enum",
     Error = "error",
+    Event = "event",
     UserValueType = "userValueType",
     UsingForDirective = "usingForDirective"
 }
@@ -65,6 +66,11 @@ export interface FLEnumDefinition extends FileLevelNode<FileLevelNodeKind.Enum>
     body: string;
 }
 
+export interface FLEventDefinition extends FileLevelNode<FileLevelNodeKind.Event> {
+    name: string;
+    args: string;
+}
+
 export interface FLErrorDefinition extends FileLevelNode<FileLevelNodeKind.Error> {
     name: string;
     args: string;
@@ -82,17 +88,19 @@ export interface FLCustomizableOperator {
 
 export interface FLUsingForDirective extends FileLevelNode<FileLevelNodeKind.UsingForDirective> {
     libraryName?: string;
-    functionList?:  Array<string | FLCustomizableOperator>;
+    functionList?: Array<string | FLCustomizableOperator>;
     typeName: string;
     isGlobal: boolean;
 }
 
-export type AnyFileLevelNode = FLPragma
+export type AnyFileLevelNode =
+    | FLPragma
     | FLImportDirective
     | FLConstant
     | FLFreeFunction
     | FLContractDefinition
     | FLStructDefinition
+    | FLEventDefinition
     | FLEnumDefinition
     | FLErrorDefinition
     | FLUserValueType

src/types/infer.ts

@@ -1042,6 +1042,10 @@ export class InferType {
                         return this.funDefToType(originalSym);
                     }
 
+                    if (originalSym instanceof EventDefinition) {
+                        return this.eventDefToType(originalSym);
+                    }
+
                     return this.variableDeclarationToTypeNode(originalSym);
                 }
             }

test/integration/compile/latest_08.spec.ts

@@ -30,40 +30,40 @@ const encounters = new Map<string, number>([
     ["ImportDirective", 1],
     ["StructDefinition", 1],
     ["StructuredDocumentation", 5],
-    ["VariableDeclaration", 75],
-    ["ElementaryTypeName", 58],
+    ["VariableDeclaration", 79],
+    ["ElementaryTypeName", 62],
     ["EnumDefinition", 2],
     ["EnumValue", 6],
-    ["ContractDefinition", 18],
-    ["FunctionDefinition", 34],
-    ["ParameterList", 87],
-    ["Block", 50],
+    ["ContractDefinition", 21],
+    ["FunctionDefinition", 35],
+    ["ParameterList", 93],
+    ["Block", 51],
     ["VariableDeclarationStatement", 16],
-    ["Literal", 38],
+    ["Literal", 42],
     ["UncheckedBlock", 4],
     ["ExpressionStatement", 22],
     ["UnaryOperation", 6],
-    ["Identifier", 93],
+    ["Identifier", 97],
     ["Return", 15],
     ["InheritanceSpecifier", 1],
     ["IdentifierPath", 36],
     ["UsingForDirective", 3],
     ["UserDefinedTypeName", 27],
     ["ModifierInvocation", 2],
-    ["FunctionCall", 42],
-    ["MemberAccess", 38],
+    ["FunctionCall", 46],
+    ["MemberAccess", 41],
     ["OverrideSpecifier", 1],
     ["ElementaryTypeNameExpression", 4],
     ["NewExpression", 2],
     ["TryStatement", 2],
     ["TryCatchClause", 8],
     ["IfStatement", 3],
     ["BinaryOperation", 23],
-    ["EventDefinition", 2],
+    ["EventDefinition", 6],
     ["ModifierDefinition", 1],
     ["PlaceholderStatement", 1],
     ["TupleExpression", 9],
-    ["EmitStatement", 1],
+    ["EmitStatement", 5],
     ["WhileStatement", 1],
     ["Continue", 1],
     ["DoWhileStatement", 1],
@@ -117,11 +117,11 @@ for (const compilerKind of PossibleCompilerKinds) {
             // console.log(sourceUnit.print());
             // console.log(sourceUnit.getChildren().length);
 
-            expect(sourceUnit.id).toEqual(776);
-            expect(sourceUnit.src).toEqual("0:9048:0");
+            expect(sourceUnit.id).toEqual(821);
+            expect(sourceUnit.src).toEqual("0:9351:0");
             expect(sourceUnit.absolutePath).toEqual(mainSample);
-            expect(sourceUnit.children.length).toEqual(32);
-            expect(sourceUnit.getChildren().length).toEqual(769);
+            expect(sourceUnit.children.length).toEqual(36);
+            expect(sourceUnit.getChildren().length).toEqual(811);
         });
 
         it(`Validate parsed output (${astKind})`, () => {

test/samples/solidity/declarations/contract_050.nodes.native.txt

@@ -14,6 +14,7 @@ SourceUnit #146
     <getter> vErrors: Array(0)
     <getter> vStructs: Array(0)
     <getter> vFunctions: Array(0)
+    <getter> vEvents: Array(0)
     <getter> vVariables: Array(0)
     <getter> vUserDefinedValueTypes: Array(0)
     <getter> vUsingForDirectives: Array(0)

test/samples/solidity/declarations/contract_050.nodes.wasm.txt

@@ -14,6 +14,7 @@ SourceUnit #146
     <getter> vErrors: Array(0)
     <getter> vStructs: Array(0)
     <getter> vFunctions: Array(0)
+    <getter> vEvents: Array(0)
     <getter> vVariables: Array(0)
     <getter> vUserDefinedValueTypes: Array(0)
     <getter> vUsingForDirectives: Array(0)

test/samples/solidity/different_abi_encoders/v1_imports_v2/v1.nodes.native.txt

@@ -14,6 +14,7 @@ SourceUnit #21
     <getter> vErrors: Array(0)
     <getter> vStructs: Array(0)
     <getter> vFunctions: Array(0)
+    <getter> vEvents: Array(0)
     <getter> vVariables: Array(0)
     <getter> vUserDefinedValueTypes: Array(0)
     <getter> vUsingForDirectives: Array(0)
@@ -158,6 +159,7 @@ SourceUnit #30
     <getter> vErrors: Array(0)
     <getter> vStructs: Array(0)
     <getter> vFunctions: Array(0)
+    <getter> vEvents: Array(0)
     <getter> vVariables: Array(0)
     <getter> vUserDefinedValueTypes: Array(0)
     <getter> vUsingForDirectives: Array(0)