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46 lines
2.0 KiB
JavaScript
46 lines
2.0 KiB
JavaScript
1 year ago
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// Warnings about unreachable code are emitted with a source location that corresponds to the unreachable code.
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// We have some testing contracts that purposely cause unreachable code, but said code is in the library contracts, and
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// with hardhat-ignore-warnings we are not able to selectively ignore them without potentially ignoring relevant
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// warnings that we don't want to miss.
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// Thus, we need to handle these warnings separately. We force Hardhat to compile them in a separate compilation job and
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// then ignore the warnings about unreachable code that come from that compilation job.
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const { task } = require('hardhat/config');
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const {
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TASK_COMPILE_SOLIDITY_GET_COMPILATION_JOB_FOR_FILE,
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TASK_COMPILE_SOLIDITY_COMPILE,
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} = require('hardhat/builtin-tasks/task-names');
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const marker = Symbol('unreachable');
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const markedCache = new WeakMap();
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task(TASK_COMPILE_SOLIDITY_GET_COMPILATION_JOB_FOR_FILE, async (params, _, runSuper) => {
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const job = await runSuper(params);
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// If the file is in the unreachable directory, we make a copy of the config and mark it, which will cause it to get
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// compiled separately (along with the other marked files).
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if (params.file.sourceName.startsWith('contracts/mocks/') && /\bunreachable\b/.test(params.file.sourceName)) {
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const originalConfig = job.solidityConfig;
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let markedConfig = markedCache.get(originalConfig);
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if (markedConfig === undefined) {
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markedConfig = { ...originalConfig, [marker]: true };
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markedCache.set(originalConfig, markedConfig);
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}
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job.solidityConfig = markedConfig;
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}
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return job;
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});
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const W_UNREACHABLE_CODE = '5740';
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task(TASK_COMPILE_SOLIDITY_COMPILE, async (params, _, runSuper) => {
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const marked = params.compilationJob.solidityConfig[marker];
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const result = await runSuper(params);
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if (marked) {
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result.output = {
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...result.output,
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errors: result.output.errors?.filter(e => e.severity !== 'warning' || e.errorCode !== W_UNREACHABLE_CODE),
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};
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}
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return result;
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});
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