58 lines
1.9 KiB
C
58 lines
1.9 KiB
C
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//===-- dictionary.c - Generate fuzzing dictionary for clang --------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This binary emits a fuzzing dictionary describing strings that are
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// significant to the clang parser: keywords and other tokens.
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//
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// The dictionary can be used by a fuzzer to reach interesting parser states
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// much more quickly.
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//
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// The output is a single-file dictionary supported by libFuzzer and AFL:
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// https://llvm.org/docs/LibFuzzer.html#dictionaries
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//
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//===----------------------------------------------------------------------===//
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#include <stdio.h>
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static void emit(const char *Name, const char *Spelling) {
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static char Hex[] = "0123456789abcdef";
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printf("%s=\"", Name);
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unsigned char C;
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while ((C = *Spelling++)) {
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if (C < 32 || C == '"' || C == '\\')
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printf("\\x%c%c", Hex[C>>4], Hex[C%16]);
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else
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printf("%c", C);
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}
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printf("\"\n");
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}
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int main(int argc, char **argv) {
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#define PUNCTUATOR(Name, Spelling) emit(#Name, Spelling);
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#define KEYWORD(Name, Criteria) emit(#Name, #Name);
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#define PPKEYWORD(Name) emit(#Name, #Name);
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#define CXX_KEYWORD_OPERATOR(Name, Equivalent) emit(#Name, #Name);
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#define OBJC_AT_KEYWORD(Name) emit(#Name, #Name);
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#define ALIAS(Spelling, Equivalent, Criteria) emit(Spelling, Spelling);
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#include "clang/Basic/TokenKinds.def"
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// Some other sub-token chunks significant to the lexer.
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emit("ucn16", "\\u0000");
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emit("ucn32", "\\U00000000");
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emit("rawstart", "R\"(");
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emit("rawend", ")\"");
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emit("quote", "\"");
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emit("squote", "'");
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emit("u8quote", "u8\"");
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emit("u16quote", "u\"");
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emit("u32quote", "U\"");
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emit("esc_nl", "\\\n");
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emit("hex", "0x");
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}
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