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Unify fuzzer random number generation into a single class

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BUG=tint:1098

Change-Id: I84931804515487d931bbbb5f0d5239d03ca76dfc
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/63300
Auto-Submit: Ryan Harrison <rharrison@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Alastair Donaldson <afdx@google.com>
This commit is contained in:
Ryan Harrison
2021-09-03 00:59:35 +00:00
committed by Tint LUCI CQ
parent 6a1eb45961
commit 5dc0ea7cce
26 changed files with 265 additions and 309 deletions
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15
fuzzers/tint_regex_fuzzer/wgsl_mutator.h
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@@ -15,11 +15,12 @@
#ifndef FUZZERS_TINT_REGEX_FUZZER_WGSL_MUTATOR_H_
#define FUZZERS_TINT_REGEX_FUZZER_WGSL_MUTATOR_H_
#include <random>
#include <string>
#include <utility>
#include <vector>
#include "fuzzers/random_generator.h"
namespace tint {
namespace fuzzers {
namespace regex_fuzzer {
@@ -114,7 +115,7 @@ void ReplaceInterval(size_t start_index,
/// @return true if a swap happened or false otherwise.
bool SwapRandomIntervals(const std::string& delimiter,
std::string& wgsl_code,
std::mt19937& generator);
RandomGenerator& generator);
/// A function that, given a WGSL-like string and a delimiter,
/// generates another WGSL-like string by deleting a random
@@ -125,7 +126,7 @@ bool SwapRandomIntervals(const std::string& delimiter,
/// @return true if a deletion happened or false otherwise.
bool DeleteRandomInterval(const std::string& delimiter,
std::string& wgsl_code,
std::mt19937& generator);
RandomGenerator& generator);
/// A function that, given a WGSL-like string and a delimiter,
/// generates another WGSL-like string by duplicating a random
@@ -136,20 +137,22 @@ bool DeleteRandomInterval(const std::string& delimiter,
/// @return true if a duplication happened or false otherwise.
bool DuplicateRandomInterval(const std::string& delimiter,
std::string& wgsl_code,
std::mt19937& generator);
RandomGenerator& generator);
/// Replaces a randomly-chosen identifier in wgsl_code.
/// @param wgsl_code - WGSL-like string where the replacement will occur.
/// @param generator - the random number generator.
/// @return true if a replacement happened or false otherwise.
bool ReplaceRandomIdentifier(std::string& wgsl_code, std::mt19937& generator);
bool ReplaceRandomIdentifier(std::string& wgsl_code,
RandomGenerator& generator);
/// Replaces the value of a randomly-chosen integer with one of
/// the values in the set {INT_MAX, INT_MIN, 0, -1}.
/// @param wgsl_code - WGSL-like string where the replacement will occur.
/// @param generator - the random number generator.
/// @return true if a replacement happened or false otherwise.
bool ReplaceRandomIntLiteral(std::string& wgsl_code, std::mt19937& generator);
bool ReplaceRandomIntLiteral(std::string& wgsl_code,
RandomGenerator& generator);
} // namespace regex_fuzzer
} // namespace fuzzers