1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
|
import * as _ from 'lodash';
import * as Parser from 'solidity-parser-antlr';
import { BranchMap, FnMap, LocationByOffset, SingleFileSourceRange, StatementMap } from './types';
export interface CoverageEntriesDescription {
fnMap: FnMap;
branchMap: BranchMap;
statementMap: StatementMap;
modifiersStatementIds: number[];
}
enum BranchType {
If = 'if',
ConditionalExpression = 'cond-expr',
BinaryExpression = 'binary-expr',
}
export class ASTVisitor {
private _entryId = 0;
private _fnMap: FnMap = {};
private _branchMap: BranchMap = {};
private _modifiersStatementIds: number[] = [];
private _statementMap: StatementMap = {};
private _locationByOffset: LocationByOffset;
private _ignoreRangesBeginingAt: number[];
private _ignoreRangesWithin: Array<[number, number]> = [];
constructor(locationByOffset: LocationByOffset, ignoreRangesBeginingAt: number[] = []) {
this._locationByOffset = locationByOffset;
this._ignoreRangesBeginingAt = ignoreRangesBeginingAt;
}
public getCollectedCoverageEntries(): CoverageEntriesDescription {
const coverageEntriesDescription = {
fnMap: this._fnMap,
branchMap: this._branchMap,
statementMap: this._statementMap,
modifiersStatementIds: this._modifiersStatementIds,
};
return coverageEntriesDescription;
}
public IfStatement(ast: Parser.IfStatement): void {
this._visitStatement(ast);
this._visitBinaryBranch(ast, ast.trueBody, ast.falseBody || ast, BranchType.If);
}
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 BinaryOperation(ast: Parser.BinaryOperation): void {
const BRANCHING_BIN_OPS = ['&&', '||'];
if (_.includes(BRANCHING_BIN_OPS, ast.operator)) {
this._visitBinaryBranch(ast, ast.left, ast.right, BranchType.BinaryExpression);
}
}
public Conditional(ast: Parser.Conditional): void {
this._visitBinaryBranch(ast, ast.trueExpression, ast.falseExpression, BranchType.ConditionalExpression);
}
public ModifierInvocation(ast: Parser.ModifierInvocation): void {
const BUILTIN_MODIFIERS = ['public', 'view', 'payable', 'external', 'internal', 'pure', 'constant'];
if (!_.includes(BUILTIN_MODIFIERS, ast.name)) {
if (this._ignoreExpression(ast)) {
return;
}
this._modifiersStatementIds.push(this._entryId);
this._visitStatement(ast);
}
}
private _visitBinaryBranch(
ast: Parser.ASTNode,
left: Parser.ASTNode,
right: Parser.ASTNode,
type: BranchType,
): void {
if (this._ignoreExpression(ast)) {
return;
}
this._branchMap[this._entryId++] = {
line: this._getExpressionRange(ast).start.line,
type,
locations: [this._getExpressionRange(left), this._getExpressionRange(right)],
};
}
private _visitStatement(ast: Parser.ASTNode): void {
if (this._ignoreExpression(ast)) {
return;
}
this._statementMap[this._entryId++] = this._getExpressionRange(ast);
}
private _getExpressionRange(ast: Parser.ASTNode): SingleFileSourceRange {
const astRange = ast.range as [number, number];
const start = this._locationByOffset[astRange[0]];
const end = this._locationByOffset[astRange[1] + 1];
const range = {
start,
end,
};
return range;
}
private _ignoreExpression(ast: Parser.ASTNode): boolean {
const [astStart, astEnd] = ast.range as [number, number];
const isRangeIgnored = _.some(
this._ignoreRangesWithin,
([rangeStart, rangeEnd]: [number, number]) => astStart >= rangeStart && astEnd <= rangeEnd,
);
return this._ignoreRangesBeginingAt.includes(astStart) || isRangeIgnored;
}
private _visitFunctionLikeDefinition(ast: Parser.ModifierDefinition | Parser.FunctionDefinition): void {
if (this._ignoreExpression(ast)) {
// we want to ignore everything within this function
// add this nodes range to the ignoreRangesWithin array
// so we can ignore any later nodes that are children of this node
this._ignoreRangesWithin.push(ast.range as [number, number]);
return;
}
const loc = this._getExpressionRange(ast);
this._fnMap[this._entryId++] = {
name: ast.name,
line: loc.start.line,
loc,
};
this._visitStatement(ast);
}
}
|
