mirror of https://github.com/embarklabs/embark.git
298 lines
8.3 KiB
JavaScript
298 lines
8.3 KiB
JavaScript
const SourceMap = require('./source_map');
|
|
|
|
class ContractSource {
|
|
constructor(file, body) {
|
|
this.file = file;
|
|
this.body = body;
|
|
|
|
this.lineLengths = body.split("\n").map((line) => { return line.length; });
|
|
this.lineCount = this.lineLengths.length;
|
|
|
|
this.lineOffsets = [];
|
|
this.lineLengths.forEach((length, line) => {
|
|
if(line == 0) {
|
|
this.lineOffsets[0] = 0;
|
|
return;
|
|
}
|
|
|
|
// +1 here factors in newline characters.
|
|
this.lineOffsets[line] = this.lineOffsets[line-1] + this.lineLengths[line-1] + 1;
|
|
});
|
|
|
|
this.contracts = {};
|
|
}
|
|
|
|
sourceMapToLocations(sourceMap) {
|
|
var [offset, length, ..._rest] = sourceMap.split(":").map((val) => {
|
|
return parseInt(val, 10);
|
|
});
|
|
|
|
var locations = {};
|
|
|
|
for(var i = 0; i < this.lineCount; i++) {
|
|
if(this.lineOffsets[i+1] <= offset)
|
|
continue;
|
|
|
|
locations.start = {line: i, column: offset - this.lineOffsets[i]};
|
|
break;
|
|
}
|
|
|
|
for(var i = locations.start.line; i < this.lineCount; i++) {
|
|
if(this.lineOffsets[i+1] <= offset + length)
|
|
continue;
|
|
|
|
locations.end = {line: i, column: ((offset + length) - this.lineOffsets[i])};
|
|
break;
|
|
}
|
|
|
|
// Ensure we return an "end" as a safeguard if the marker ends up to be
|
|
// or surpass the offset for last character.
|
|
if(!locations.end) {
|
|
var lastLine = this.lineCount - 1;
|
|
locations.end = {line: lastLine, column: this.lineLengths[lastLine]};
|
|
}
|
|
|
|
// Istanbul likes lines to be 1-indexed, so we'll increment here before returning.
|
|
locations.start.line++;
|
|
locations.end.line++;
|
|
return locations;
|
|
}
|
|
|
|
parseSolcOutput(source, contracts) {
|
|
this.id = source.id;
|
|
this.ast = source.ast;
|
|
this.contractBytecode = {};
|
|
|
|
for(var contractName in contracts) {
|
|
this.contractBytecode[contractName] = {};
|
|
|
|
var contract = contracts[contractName];
|
|
var bytecodeMapping = this.contractBytecode[contractName];
|
|
var opcodes = contract.evm.deployedBytecode.opcodes.trim().split(' ');
|
|
var sourceMaps = contract.evm.deployedBytecode.sourceMap.split(';');
|
|
|
|
var bytecodeIdx = 0;
|
|
var pc = 0;
|
|
var instructions = 0;
|
|
do {
|
|
var instruction = opcodes[bytecodeIdx];
|
|
var length = this._instructionLength(instruction);
|
|
bytecodeMapping[pc] = {
|
|
instruction: instruction,
|
|
sourceMap: sourceMaps[instructions],
|
|
seen: false
|
|
}
|
|
|
|
pc += length;
|
|
instructions++;
|
|
bytecodeIdx += (length > 1) ? 2 : 1;
|
|
} while(bytecodeIdx < opcodes.length);
|
|
}
|
|
}
|
|
|
|
generateCodeCoverage(trace) {
|
|
if(!this.ast || !this.contractBytecode)
|
|
throw new Error('Error generating coverage: solc output was not assigned');
|
|
|
|
var coverage = {
|
|
l: {},
|
|
path: this.file,
|
|
s: {},
|
|
b: {},
|
|
f: {},
|
|
fnMap: {},
|
|
statementMap: {},
|
|
branchMap: {},
|
|
};
|
|
|
|
var nodesRequiringVisiting = [this.ast];
|
|
var nodeStack = [];
|
|
var sourceMapToNodeType = {};
|
|
|
|
do {
|
|
var node = nodesRequiringVisiting.pop();
|
|
|
|
if(!node)
|
|
continue;
|
|
|
|
var children = [];
|
|
var markLocations = [];
|
|
|
|
switch(node.nodeType) {
|
|
case 'Identifier':
|
|
case 'Literal':
|
|
case 'VariableDeclaration':
|
|
// We don't need to do anything with these. Just carry on.
|
|
break;
|
|
|
|
case 'IfStatement':
|
|
coverage.b[node.id] = [0,0];
|
|
|
|
var location = this.sourceMapToLocations(node.src);
|
|
var trueBranchLocation = this.sourceMapToLocations(node.trueBody.src);
|
|
var falseBranchLocation = this.sourceMapToLocations(node.falseBody.src);
|
|
|
|
coverage.branchMap[node.id] = {
|
|
type: 'if',
|
|
locations: [trueBranchLocation, falseBranchLocation],
|
|
line: location.start.line,
|
|
}
|
|
|
|
children = [node.condition]
|
|
.concat(node.trueBody.statements)
|
|
.concat(node.falseBody.statements);
|
|
|
|
markLocations = [location, trueBranchLocation, falseBranchLocation];
|
|
|
|
if(node.trueBody.statements[0])
|
|
node.trueBody.statements[0]._parent = {type: 'b', id: node.id, idx: 0}
|
|
|
|
if(node.falseBody.statements[0])
|
|
node.falseBody.statements[0]._parent = {type: 'b', id: node.id, idx: 1}
|
|
|
|
sourceMapToNodeType[node.src] = [{
|
|
type: 'b',
|
|
id: node.id,
|
|
body: {loc: location},
|
|
}]
|
|
|
|
break;
|
|
|
|
case 'BinaryOperation':
|
|
children = [node.leftExpression, node.rightExpression];
|
|
break;
|
|
|
|
case 'Return':
|
|
// Return is a bit of a special case, because the statement src is the
|
|
// return "body". We don't `break` here on purpose so it can share the
|
|
// same logic below.
|
|
node.src = node.expression.src;
|
|
|
|
case 'Assignment':
|
|
case 'ExpressionStatement':
|
|
coverage.s[node.id] = 0;
|
|
|
|
var location = this.sourceMapToLocations(node.src);
|
|
coverage.statementMap[node.id] = location;
|
|
|
|
if(!sourceMapToNodeType[node.src]) sourceMapToNodeType[node.src] = [];
|
|
sourceMapToNodeType[node.src].push({
|
|
type: 's',
|
|
id: node.id,
|
|
body: {loc: coverage.statementMap[node.id]},
|
|
parent: node._parent,
|
|
});
|
|
|
|
|
|
children = node.expression ? [node.expression] : [];
|
|
markLocations = [location];
|
|
break;
|
|
|
|
case 'ContractDefinition':
|
|
case 'SourceUnit':
|
|
children = node.nodes;
|
|
break;
|
|
|
|
case 'PragmaDirective':
|
|
// These nodes do nothing, so we move on.
|
|
break;
|
|
|
|
case 'FunctionDefinition':
|
|
// Istanbul only wants the function definition, not the body, so we're
|
|
// going to do some fun math here.
|
|
var functionSourceMap = new SourceMap(node.src);
|
|
var functionParametersSourceMap = new SourceMap(node.parameters.src);
|
|
|
|
var functionDefinitionSourceMap = new SourceMap(
|
|
functionSourceMap.offset,
|
|
(functionParametersSourceMap.offset + functionParametersSourceMap.length) - functionSourceMap.offset
|
|
).toString();
|
|
|
|
var fnName = node.isConstructor ? "(constructor)" : node.name;
|
|
var location = this.sourceMapToLocations(functionDefinitionSourceMap);
|
|
|
|
coverage.f[node.id] = 0;
|
|
coverage.fnMap[node.id] = {
|
|
name: fnName,
|
|
line: location.start.line,
|
|
loc: location,
|
|
};
|
|
|
|
// Record function positions.
|
|
sourceMapToNodeType[node.src] = [{
|
|
type: 'f',
|
|
id: node.id,
|
|
body: coverage.fnMap[node.id],
|
|
}];
|
|
|
|
children = node.body.statements;
|
|
markLocations = [location];
|
|
break;
|
|
|
|
default:
|
|
console.log(`Don't know how to handle node type ${node.nodeType}`);
|
|
break;
|
|
}
|
|
|
|
nodesRequiringVisiting = nodesRequiringVisiting.concat(children);
|
|
|
|
markLocations.forEach((location) => {
|
|
for(var i = location.start.line; i <= location.end.line; i++) {
|
|
coverage.l[i] = 0;
|
|
}
|
|
});
|
|
|
|
} while(nodesRequiringVisiting.length > 0);
|
|
|
|
for(var contractName in this.contractBytecode) {
|
|
var bytecode = this.contractBytecode[contractName];
|
|
trace.structLogs.forEach((step) => {
|
|
var step = bytecode[step.pc];
|
|
step.seen = true;
|
|
|
|
if(!step.sourceMap || step.sourceMap == '')
|
|
return;
|
|
|
|
var nodes = sourceMapToNodeType[step.sourceMap] ;
|
|
|
|
if(!nodes) return;
|
|
|
|
var recordedLineHit = false;
|
|
|
|
nodes.forEach((node) => {
|
|
if(node.body && node.body.loc && !recordedLineHit) {
|
|
for(var line = node.body.loc.start.line; line <= node.body.loc.end.line; line++) {
|
|
coverage.l[line]++;
|
|
}
|
|
|
|
recordedLineHit = true;
|
|
}
|
|
|
|
if(node.type != 'b')
|
|
coverage[node.type][node.id]++;
|
|
|
|
if(!node.parent)
|
|
return;
|
|
|
|
switch(node.parent.type) {
|
|
case 'b':
|
|
coverage.b[node.parent.id][node.parent.idx]++;
|
|
break;
|
|
}
|
|
});
|
|
});
|
|
}
|
|
|
|
return coverage;
|
|
}
|
|
|
|
_instructionLength(instruction) {
|
|
if(instruction.indexOf('PUSH') == -1)
|
|
return 1;
|
|
|
|
return parseInt(instruction.match(/PUSH(\d+)/m)[1], 10) + 1;
|
|
}
|
|
}
|
|
|
|
module.exports = ContractSource;
|