diff options
Diffstat (limited to 'packages/sol-cov/src/get_source_range_snippet.ts')
| -rw-r--r-- | packages/sol-cov/src/get_source_range_snippet.ts | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/packages/sol-cov/src/get_source_range_snippet.ts b/packages/sol-cov/src/get_source_range_snippet.ts deleted file mode 100644 index bea17beae..000000000 --- a/packages/sol-cov/src/get_source_range_snippet.ts +++ /dev/null @@ -1,180 +0,0 @@ -import * as ethUtil from 'ethereumjs-util'; -import * as _ from 'lodash'; -import * as Parser from 'solidity-parser-antlr'; - -import { SingleFileSourceRange, SourceRange, SourceSnippet } from './types'; -import { utils } from './utils'; - -interface ASTInfo { - type: string; - node: Parser.ASTNode; - name: string | null; - range?: SingleFileSourceRange; -} - -// Parsing source code for each transaction/code is slow and therefore we cache it -const parsedSourceByHash: { [sourceHash: string]: Parser.ASTNode } = {}; - -export function getSourceRangeSnippet(sourceRange: SourceRange, sourceCode: string): SourceSnippet | null { - const sourceHash = ethUtil.sha3(sourceCode).toString('hex'); - if (_.isUndefined(parsedSourceByHash[sourceHash])) { - parsedSourceByHash[sourceHash] = Parser.parse(sourceCode, { loc: true }); - } - const astNode = parsedSourceByHash[sourceHash]; - const visitor = new ASTInfoVisitor(); - Parser.visit(astNode, visitor); - const astInfo = visitor.getASTInfoForRange(sourceRange); - if (astInfo === null) { - return null; - } - const sourceCodeInRange = utils.getRange(sourceCode, sourceRange.location); - return { - ...astInfo, - range: astInfo.range as SingleFileSourceRange, - source: sourceCodeInRange, - fileName: sourceRange.fileName, - }; -} - -// A visitor which collects ASTInfo for most nodes in the AST. -class ASTInfoVisitor { - private readonly _astInfos: ASTInfo[] = []; - public getASTInfoForRange(sourceRange: SourceRange): ASTInfo | null { - // HACK(albrow): Sometimes the source range doesn't exactly match that - // of astInfo. To work around that we try with a +/-1 offset on - // end.column. If nothing matches even with the offset, we return null. - const offset = { - start: { - line: 0, - column: 0, - }, - end: { - line: 0, - column: 0, - }, - }; - let astInfo = this._getASTInfoForRange(sourceRange, offset); - if (astInfo !== null) { - return astInfo; - } - offset.end.column += 1; - astInfo = this._getASTInfoForRange(sourceRange, offset); - if (astInfo !== null) { - return astInfo; - } - offset.end.column -= 2; - astInfo = this._getASTInfoForRange(sourceRange, offset); - if (astInfo !== null) { - return astInfo; - } - return null; - } - public ContractDefinition(ast: Parser.ContractDefinition): void { - this._visitContractDefinition(ast); - } - public IfStatement(ast: Parser.IfStatement): void { - this._visitStatement(ast); - } - public FunctionDefinition(ast: Parser.FunctionDefinition): void { - this._visitFunctionLikeDefinition(ast); - } - public ModifierDefinition(ast: Parser.ModifierDefinition): void { - this._visitFunctionLikeDefinition(ast); - } - public ForStatement(ast: Parser.ForStatement): void { - this._visitStatement(ast); - } - public ReturnStatement(ast: Parser.ReturnStatement): void { - this._visitStatement(ast); - } - public BreakStatement(ast: Parser.BreakStatement): void { - this._visitStatement(ast); - } - public ContinueStatement(ast: Parser.ContinueStatement): void { - this._visitStatement(ast); - } - public EmitStatement(ast: any /* TODO: Parser.EmitStatement */): void { - this._visitStatement(ast); - } - public VariableDeclarationStatement(ast: Parser.VariableDeclarationStatement): void { - this._visitStatement(ast); - } - public Statement(ast: Parser.Statement): void { - this._visitStatement(ast); - } - public WhileStatement(ast: Parser.WhileStatement): void { - this._visitStatement(ast); - } - public SimpleStatement(ast: Parser.SimpleStatement): void { - this._visitStatement(ast); - } - public ThrowStatement(ast: Parser.ThrowStatement): void { - this._visitStatement(ast); - } - public DoWhileStatement(ast: Parser.DoWhileStatement): void { - this._visitStatement(ast); - } - public ExpressionStatement(ast: Parser.ExpressionStatement): void { - this._visitStatement(ast.expression); - } - public InlineAssemblyStatement(ast: Parser.InlineAssemblyStatement): void { - this._visitStatement(ast); - } - public ModifierInvocation(ast: Parser.ModifierInvocation): void { - const BUILTIN_MODIFIERS = ['public', 'view', 'payable', 'external', 'internal', 'pure', 'constant']; - if (!_.includes(BUILTIN_MODIFIERS, ast.name)) { - this._visitStatement(ast); - } - } - private _visitStatement(ast: Parser.ASTNode): void { - this._astInfos.push({ - type: ast.type, - node: ast, - name: null, - range: ast.loc, - }); - } - private _visitFunctionLikeDefinition(ast: Parser.ModifierDefinition | Parser.FunctionDefinition): void { - this._astInfos.push({ - type: ast.type, - node: ast, - name: ast.name, - range: ast.loc, - }); - } - private _visitContractDefinition(ast: Parser.ContractDefinition): void { - this._astInfos.push({ - type: ast.type, - node: ast, - name: ast.name, - range: ast.loc, - }); - } - private _getASTInfoForRange(sourceRange: SourceRange, offset: SingleFileSourceRange): ASTInfo | null { - const offsetSourceRange = { - ...sourceRange, - location: { - start: { - line: sourceRange.location.start.line + offset.start.line, - column: sourceRange.location.start.column + offset.start.column, - }, - end: { - line: sourceRange.location.end.line + offset.end.line, - column: sourceRange.location.end.column + offset.end.column, - }, - }, - }; - for (const astInfo of this._astInfos) { - const astInfoRange = astInfo.range as SingleFileSourceRange; - if ( - astInfoRange.start.column === offsetSourceRange.location.start.column && - astInfoRange.start.line === offsetSourceRange.location.start.line && - astInfoRange.end.column === offsetSourceRange.location.end.column && - astInfoRange.end.line === offsetSourceRange.location.end.line - ) { - return astInfo; - } - } - return null; - } -} |