1633 lines
59 KiB
C++
1633 lines
59 KiB
C++
/*
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* Copyright (c) 2015 Andrew Kelley
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*
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* This file is part of zig, which is MIT licensed.
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* See http://opensource.org/licenses/MIT
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*/
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#include "tokenizer.hpp"
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#include "util.hpp"
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#include <stdarg.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <inttypes.h>
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#include <limits.h>
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#include <errno.h>
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#define WHITESPACE \
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' ': \
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case '\n'
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#define DIGIT_NON_ZERO \
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'1': \
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case '2': \
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case '3': \
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case '4': \
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case '5': \
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case '6': \
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case '7': \
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case '8': \
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case '9'
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#define DIGIT \
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'0': \
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case DIGIT_NON_ZERO
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#define ALPHA_EXCEPT_C \
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'a': \
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case 'b': \
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/*case 'c':*/ \
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case 'd': \
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case 'e': \
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case 'f': \
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case 'g': \
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case 'h': \
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case 'i': \
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case 'j': \
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case 'k': \
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case 'l': \
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case 'm': \
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case 'n': \
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case 'o': \
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case 'p': \
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case 'q': \
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case 'r': \
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case 's': \
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case 't': \
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case 'u': \
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case 'v': \
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case 'w': \
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case 'x': \
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case 'y': \
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case 'z': \
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case 'A': \
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case 'B': \
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case 'C': \
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case 'D': \
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case 'E': \
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case 'F': \
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case 'G': \
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case 'H': \
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case 'I': \
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case 'J': \
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case 'K': \
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case 'L': \
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case 'M': \
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case 'N': \
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case 'O': \
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case 'P': \
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case 'Q': \
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case 'R': \
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case 'S': \
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case 'T': \
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case 'U': \
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case 'V': \
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case 'W': \
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case 'X': \
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case 'Y': \
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case 'Z'
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#define ALPHA \
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ALPHA_EXCEPT_C: \
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case 'c'
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#define SYMBOL_CHAR \
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ALPHA_EXCEPT_C: \
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case DIGIT: \
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case '_': \
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case 'c'
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#define SYMBOL_START \
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ALPHA: \
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case '_'
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struct ZigKeyword {
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const char *text;
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TokenId token_id;
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};
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static const struct ZigKeyword zig_keywords[] = {
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{"align", TokenIdKeywordAlign},
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{"and", TokenIdKeywordAnd},
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{"asm", TokenIdKeywordAsm},
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{"async", TokenIdKeywordAsync},
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{"await", TokenIdKeywordAwait},
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{"break", TokenIdKeywordBreak},
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{"cancel", TokenIdKeywordCancel},
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{"catch", TokenIdKeywordCatch},
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{"comptime", TokenIdKeywordCompTime},
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{"const", TokenIdKeywordConst},
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{"continue", TokenIdKeywordContinue},
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{"defer", TokenIdKeywordDefer},
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{"else", TokenIdKeywordElse},
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{"enum", TokenIdKeywordEnum},
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{"errdefer", TokenIdKeywordErrdefer},
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{"error", TokenIdKeywordError},
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{"export", TokenIdKeywordExport},
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{"extern", TokenIdKeywordExtern},
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{"false", TokenIdKeywordFalse},
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{"fn", TokenIdKeywordFn},
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{"for", TokenIdKeywordFor},
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{"if", TokenIdKeywordIf},
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{"inline", TokenIdKeywordInline},
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{"nakedcc", TokenIdKeywordNakedCC},
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{"noalias", TokenIdKeywordNoAlias},
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{"null", TokenIdKeywordNull},
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{"or", TokenIdKeywordOr},
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{"packed", TokenIdKeywordPacked},
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{"promise", TokenIdKeywordPromise},
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{"pub", TokenIdKeywordPub},
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{"resume", TokenIdKeywordResume},
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{"return", TokenIdKeywordReturn},
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{"section", TokenIdKeywordSection},
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{"stdcallcc", TokenIdKeywordStdcallCC},
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{"struct", TokenIdKeywordStruct},
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{"suspend", TokenIdKeywordSuspend},
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{"switch", TokenIdKeywordSwitch},
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{"test", TokenIdKeywordTest},
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{"this", TokenIdKeywordThis},
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{"true", TokenIdKeywordTrue},
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{"try", TokenIdKeywordTry},
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{"undefined", TokenIdKeywordUndefined},
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{"union", TokenIdKeywordUnion},
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{"unreachable", TokenIdKeywordUnreachable},
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{"use", TokenIdKeywordUse},
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{"var", TokenIdKeywordVar},
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{"volatile", TokenIdKeywordVolatile},
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{"while", TokenIdKeywordWhile},
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};
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bool is_zig_keyword(Buf *buf) {
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for (size_t i = 0; i < array_length(zig_keywords); i += 1) {
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if (buf_eql_str(buf, zig_keywords[i].text)) {
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return true;
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}
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}
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return false;
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}
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static bool is_symbol_char(uint8_t c) {
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switch (c) {
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case SYMBOL_CHAR:
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return true;
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default:
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return false;
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}
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}
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enum TokenizeState {
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TokenizeStateStart,
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TokenizeStateSymbol,
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TokenizeStateSymbolFirstC,
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TokenizeStateZero, // "0", which might lead to "0x"
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TokenizeStateNumber, // "123", "0x123"
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TokenizeStateNumberDot,
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TokenizeStateFloatFraction, // "123.456", "0x123.456"
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TokenizeStateFloatExponentUnsigned, // "123.456e", "123e", "0x123p"
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TokenizeStateFloatExponentNumber, // "123.456e-", "123.456e5", "123.456e5e-5"
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TokenizeStateString,
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TokenizeStateStringEscape,
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TokenizeStateCharLiteral,
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TokenizeStateCharLiteralEnd,
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TokenizeStateSawStar,
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TokenizeStateSawStarPercent,
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TokenizeStateSawSlash,
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TokenizeStateSawBackslash,
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TokenizeStateSawPercent,
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TokenizeStateSawPlus,
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TokenizeStateSawPlusPercent,
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TokenizeStateSawDash,
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TokenizeStateSawMinusPercent,
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TokenizeStateSawAmpersand,
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TokenizeStateSawCaret,
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TokenizeStateSawBar,
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TokenizeStateSawBarBar,
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TokenizeStateLineComment,
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TokenizeStateLineString,
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TokenizeStateLineStringEnd,
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TokenizeStateLineStringContinue,
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TokenizeStateLineStringContinueC,
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TokenizeStateSawEq,
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TokenizeStateSawBang,
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TokenizeStateSawLessThan,
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TokenizeStateSawLessThanLessThan,
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TokenizeStateSawGreaterThan,
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TokenizeStateSawGreaterThanGreaterThan,
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TokenizeStateSawDot,
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TokenizeStateSawDotDot,
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TokenizeStateSawQuestionMark,
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TokenizeStateSawAtSign,
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TokenizeStateCharCode,
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TokenizeStateError,
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};
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struct Tokenize {
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Buf *buf;
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size_t pos;
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TokenizeState state;
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ZigList<Token> *tokens;
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int line;
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int column;
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Token *cur_tok;
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Tokenization *out;
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uint32_t radix;
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int32_t exp_add_amt;
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bool is_exp_negative;
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size_t char_code_index;
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size_t char_code_end;
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bool unicode;
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uint32_t char_code;
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int exponent_in_bin_or_dec;
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BigInt specified_exponent;
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BigInt significand;
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};
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ATTRIBUTE_PRINTF(2, 3)
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static void tokenize_error(Tokenize *t, const char *format, ...) {
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t->state = TokenizeStateError;
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if (t->cur_tok) {
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t->out->err_line = t->cur_tok->start_line;
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t->out->err_column = t->cur_tok->start_column;
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} else {
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t->out->err_line = t->line;
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t->out->err_column = t->column;
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}
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va_list ap;
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va_start(ap, format);
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t->out->err = buf_vprintf(format, ap);
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va_end(ap);
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}
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static void set_token_id(Tokenize *t, Token *token, TokenId id) {
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token->id = id;
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if (id == TokenIdIntLiteral) {
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bigint_init_unsigned(&token->data.int_lit.bigint, 0);
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} else if (id == TokenIdFloatLiteral) {
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bigfloat_init_32(&token->data.float_lit.bigfloat, 0.0f);
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token->data.float_lit.overflow = false;
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} else if (id == TokenIdStringLiteral || id == TokenIdSymbol) {
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memset(&token->data.str_lit.str, 0, sizeof(Buf));
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buf_resize(&token->data.str_lit.str, 0);
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token->data.str_lit.is_c_str = false;
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}
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}
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static void begin_token(Tokenize *t, TokenId id) {
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assert(!t->cur_tok);
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t->tokens->add_one();
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Token *token = &t->tokens->last();
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token->start_line = t->line;
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token->start_column = t->column;
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token->start_pos = t->pos;
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set_token_id(t, token, id);
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t->cur_tok = token;
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}
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static void cancel_token(Tokenize *t) {
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t->tokens->pop();
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t->cur_tok = nullptr;
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}
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static void end_float_token(Tokenize *t) {
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if (t->radix == 10) {
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uint8_t *ptr_buf = (uint8_t*)buf_ptr(t->buf) + t->cur_tok->start_pos;
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size_t buf_len = t->cur_tok->end_pos - t->cur_tok->start_pos;
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if (bigfloat_init_buf_base10(&t->cur_tok->data.float_lit.bigfloat, ptr_buf, buf_len)) {
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t->cur_tok->data.float_lit.overflow = true;
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}
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return;
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}
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BigInt int_max;
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bigint_init_unsigned(&int_max, INT_MAX);
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if (bigint_cmp(&t->specified_exponent, &int_max) != CmpLT) {
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t->cur_tok->data.float_lit.overflow = true;
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return;
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}
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if (!bigint_fits_in_bits(&t->specified_exponent, 128, true)) {
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t->cur_tok->data.float_lit.overflow = true;
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return;
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}
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int64_t specified_exponent = bigint_as_signed(&t->specified_exponent);
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if (t->is_exp_negative) {
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specified_exponent = -specified_exponent;
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}
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t->exponent_in_bin_or_dec = (int)(t->exponent_in_bin_or_dec + specified_exponent);
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if (!bigint_fits_in_bits(&t->significand, 128, false)) {
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t->cur_tok->data.float_lit.overflow = true;
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return;
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}
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// A SoftFloat-3d float128 is represented internally as a standard
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// quad-precision float with 15bit exponent and 113bit fractional.
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union { uint64_t repr[2]; float128_t actual; } f_bits;
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if (bigint_cmp_zero(&t->significand) == CmpEQ) {
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f_bits.repr[0] = 0;
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f_bits.repr[1] = 0;
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} else {
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// normalize the significand
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if (t->radix == 10) {
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zig_panic("TODO: decimal floats");
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} else {
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int significand_magnitude_in_bin = 127 - bigint_clz(&t->significand, 128);
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t->exponent_in_bin_or_dec += significand_magnitude_in_bin;
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if (!(-16382 <= t->exponent_in_bin_or_dec && t->exponent_in_bin_or_dec <= 16383)) {
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t->cur_tok->data.float_lit.overflow = true;
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return;
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}
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uint64_t sig_bits[2] = {0, 0};
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bigint_write_twos_complement(&t->significand, (uint8_t*) sig_bits, 128, false);
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const uint64_t shift = 112 - significand_magnitude_in_bin;
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const uint64_t exp_shift = 48;
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// Mask the sign bit to 0 since always non-negative lex
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const uint64_t exp_mask = 0xffffull << exp_shift;
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if (shift >= 64) {
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f_bits.repr[0] = 0;
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f_bits.repr[1] = sig_bits[0] << (shift - 64);
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} else {
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f_bits.repr[0] = sig_bits[0] << shift;
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f_bits.repr[1] = ((sig_bits[1] << shift) | (sig_bits[0] >> (64 - shift)));
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}
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f_bits.repr[1] &= ~exp_mask;
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f_bits.repr[1] |= (uint64_t)(t->exponent_in_bin_or_dec + 16383) << exp_shift;
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}
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}
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bigfloat_init_128(&t->cur_tok->data.float_lit.bigfloat, f_bits.actual);
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}
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static void end_token(Tokenize *t) {
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assert(t->cur_tok);
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t->cur_tok->end_pos = t->pos + 1;
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if (t->cur_tok->id == TokenIdFloatLiteral) {
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end_float_token(t);
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} else if (t->cur_tok->id == TokenIdSymbol) {
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char *token_mem = buf_ptr(t->buf) + t->cur_tok->start_pos;
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int token_len = (int)(t->cur_tok->end_pos - t->cur_tok->start_pos);
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for (size_t i = 0; i < array_length(zig_keywords); i += 1) {
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if (mem_eql_str(token_mem, token_len, zig_keywords[i].text)) {
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t->cur_tok->id = zig_keywords[i].token_id;
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break;
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}
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}
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}
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t->cur_tok = nullptr;
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}
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static bool is_exponent_signifier(uint8_t c, int radix) {
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if (radix == 16) {
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return c == 'p' || c == 'P';
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} else {
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return c == 'e' || c == 'E';
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}
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}
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static uint32_t get_digit_value(uint8_t c) {
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if ('0' <= c && c <= '9') {
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return c - '0';
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}
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if ('A' <= c && c <= 'Z') {
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return c - 'A' + 10;
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}
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if ('a' <= c && c <= 'z') {
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return c - 'a' + 10;
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}
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return UINT32_MAX;
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}
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static void handle_string_escape(Tokenize *t, uint8_t c) {
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if (t->cur_tok->id == TokenIdCharLiteral) {
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t->cur_tok->data.char_lit.c = c;
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t->state = TokenizeStateCharLiteralEnd;
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} else if (t->cur_tok->id == TokenIdStringLiteral || t->cur_tok->id == TokenIdSymbol) {
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buf_append_char(&t->cur_tok->data.str_lit.str, c);
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t->state = TokenizeStateString;
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} else {
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zig_unreachable();
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}
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}
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static const char* get_escape_shorthand(uint8_t c) {
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switch (c) {
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case '\0':
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return "\\0";
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case '\a':
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return "\\a";
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case '\b':
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return "\\b";
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case '\t':
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return "\\t";
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case '\n':
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return "\\n";
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case '\v':
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return "\\v";
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case '\f':
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return "\\f";
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case '\r':
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return "\\r";
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default:
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return nullptr;
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}
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}
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static void invalid_char_error(Tokenize *t, uint8_t c) {
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if (c == '\r') {
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tokenize_error(t, "invalid carriage return, only '\\n' line endings are supported");
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} else if (isprint(c)) {
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tokenize_error(t, "invalid character: '%c'", c);
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} else {
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const char *sh = get_escape_shorthand(c);
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if (sh) {
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tokenize_error(t, "invalid character: '%s'", sh);
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} else {
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tokenize_error(t, "invalid character: '\\x%x'", c);
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}
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}
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}
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void tokenize(Buf *buf, Tokenization *out) {
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Tokenize t = {0};
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t.out = out;
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t.tokens = out->tokens = allocate<ZigList<Token>>(1);
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t.buf = buf;
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out->line_offsets = allocate<ZigList<size_t>>(1);
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out->line_offsets->append(0);
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for (t.pos = 0; t.pos < buf_len(t.buf); t.pos += 1) {
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uint8_t c = buf_ptr(t.buf)[t.pos];
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switch (t.state) {
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case TokenizeStateError:
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break;
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case TokenizeStateStart:
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switch (c) {
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case WHITESPACE:
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break;
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case 'c':
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t.state = TokenizeStateSymbolFirstC;
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begin_token(&t, TokenIdSymbol);
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buf_append_char(&t.cur_tok->data.str_lit.str, c);
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break;
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case ALPHA_EXCEPT_C:
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case '_':
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t.state = TokenizeStateSymbol;
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begin_token(&t, TokenIdSymbol);
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buf_append_char(&t.cur_tok->data.str_lit.str, c);
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break;
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case '0':
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t.state = TokenizeStateZero;
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begin_token(&t, TokenIdIntLiteral);
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t.radix = 10;
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t.exp_add_amt = 1;
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t.exponent_in_bin_or_dec = 0;
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bigint_init_unsigned(&t.cur_tok->data.int_lit.bigint, 0);
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bigint_init_unsigned(&t.specified_exponent, 0);
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break;
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case DIGIT_NON_ZERO:
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t.state = TokenizeStateNumber;
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begin_token(&t, TokenIdIntLiteral);
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t.radix = 10;
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t.exp_add_amt = 1;
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t.exponent_in_bin_or_dec = 0;
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bigint_init_unsigned(&t.cur_tok->data.int_lit.bigint, get_digit_value(c));
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bigint_init_unsigned(&t.specified_exponent, 0);
|
|
break;
|
|
case '"':
|
|
begin_token(&t, TokenIdStringLiteral);
|
|
t.state = TokenizeStateString;
|
|
break;
|
|
case '\'':
|
|
begin_token(&t, TokenIdCharLiteral);
|
|
t.state = TokenizeStateCharLiteral;
|
|
break;
|
|
case '(':
|
|
begin_token(&t, TokenIdLParen);
|
|
end_token(&t);
|
|
break;
|
|
case ')':
|
|
begin_token(&t, TokenIdRParen);
|
|
end_token(&t);
|
|
break;
|
|
case ',':
|
|
begin_token(&t, TokenIdComma);
|
|
end_token(&t);
|
|
break;
|
|
case '{':
|
|
begin_token(&t, TokenIdLBrace);
|
|
end_token(&t);
|
|
break;
|
|
case '}':
|
|
begin_token(&t, TokenIdRBrace);
|
|
end_token(&t);
|
|
break;
|
|
case '[':
|
|
begin_token(&t, TokenIdLBracket);
|
|
end_token(&t);
|
|
break;
|
|
case ']':
|
|
begin_token(&t, TokenIdRBracket);
|
|
end_token(&t);
|
|
break;
|
|
case ';':
|
|
begin_token(&t, TokenIdSemicolon);
|
|
end_token(&t);
|
|
break;
|
|
case ':':
|
|
begin_token(&t, TokenIdColon);
|
|
end_token(&t);
|
|
break;
|
|
case '#':
|
|
begin_token(&t, TokenIdNumberSign);
|
|
end_token(&t);
|
|
break;
|
|
case '*':
|
|
begin_token(&t, TokenIdStar);
|
|
t.state = TokenizeStateSawStar;
|
|
break;
|
|
case '/':
|
|
begin_token(&t, TokenIdSlash);
|
|
t.state = TokenizeStateSawSlash;
|
|
break;
|
|
case '\\':
|
|
begin_token(&t, TokenIdStringLiteral);
|
|
t.state = TokenizeStateSawBackslash;
|
|
break;
|
|
case '%':
|
|
begin_token(&t, TokenIdPercent);
|
|
t.state = TokenizeStateSawPercent;
|
|
break;
|
|
case '+':
|
|
begin_token(&t, TokenIdPlus);
|
|
t.state = TokenizeStateSawPlus;
|
|
break;
|
|
case '~':
|
|
begin_token(&t, TokenIdTilde);
|
|
end_token(&t);
|
|
break;
|
|
case '@':
|
|
begin_token(&t, TokenIdAtSign);
|
|
t.state = TokenizeStateSawAtSign;
|
|
break;
|
|
case '-':
|
|
begin_token(&t, TokenIdDash);
|
|
t.state = TokenizeStateSawDash;
|
|
break;
|
|
case '&':
|
|
begin_token(&t, TokenIdAmpersand);
|
|
t.state = TokenizeStateSawAmpersand;
|
|
break;
|
|
case '^':
|
|
begin_token(&t, TokenIdBinXor);
|
|
t.state = TokenizeStateSawCaret;
|
|
break;
|
|
case '|':
|
|
begin_token(&t, TokenIdBinOr);
|
|
t.state = TokenizeStateSawBar;
|
|
break;
|
|
case '=':
|
|
begin_token(&t, TokenIdEq);
|
|
t.state = TokenizeStateSawEq;
|
|
break;
|
|
case '!':
|
|
begin_token(&t, TokenIdBang);
|
|
t.state = TokenizeStateSawBang;
|
|
break;
|
|
case '<':
|
|
begin_token(&t, TokenIdCmpLessThan);
|
|
t.state = TokenizeStateSawLessThan;
|
|
break;
|
|
case '>':
|
|
begin_token(&t, TokenIdCmpGreaterThan);
|
|
t.state = TokenizeStateSawGreaterThan;
|
|
break;
|
|
case '.':
|
|
begin_token(&t, TokenIdDot);
|
|
t.state = TokenizeStateSawDot;
|
|
break;
|
|
case '?':
|
|
begin_token(&t, TokenIdMaybe);
|
|
t.state = TokenizeStateSawQuestionMark;
|
|
break;
|
|
default:
|
|
invalid_char_error(&t, c);
|
|
}
|
|
break;
|
|
case TokenizeStateSawQuestionMark:
|
|
switch (c) {
|
|
case '?':
|
|
set_token_id(&t, t.cur_tok, TokenIdDoubleQuestion);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
case '=':
|
|
set_token_id(&t, t.cur_tok, TokenIdMaybeAssign);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateSawDot:
|
|
switch (c) {
|
|
case '.':
|
|
t.state = TokenizeStateSawDotDot;
|
|
set_token_id(&t, t.cur_tok, TokenIdEllipsis2);
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateSawDotDot:
|
|
switch (c) {
|
|
case '.':
|
|
t.state = TokenizeStateStart;
|
|
set_token_id(&t, t.cur_tok, TokenIdEllipsis3);
|
|
end_token(&t);
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateSawGreaterThan:
|
|
switch (c) {
|
|
case '=':
|
|
set_token_id(&t, t.cur_tok, TokenIdCmpGreaterOrEq);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
case '>':
|
|
set_token_id(&t, t.cur_tok, TokenIdBitShiftRight);
|
|
t.state = TokenizeStateSawGreaterThanGreaterThan;
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateSawGreaterThanGreaterThan:
|
|
switch (c) {
|
|
case '=':
|
|
set_token_id(&t, t.cur_tok, TokenIdBitShiftRightEq);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateSawLessThan:
|
|
switch (c) {
|
|
case '=':
|
|
set_token_id(&t, t.cur_tok, TokenIdCmpLessOrEq);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
case '<':
|
|
set_token_id(&t, t.cur_tok, TokenIdBitShiftLeft);
|
|
t.state = TokenizeStateSawLessThanLessThan;
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateSawLessThanLessThan:
|
|
switch (c) {
|
|
case '=':
|
|
set_token_id(&t, t.cur_tok, TokenIdBitShiftLeftEq);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateSawBang:
|
|
switch (c) {
|
|
case '=':
|
|
set_token_id(&t, t.cur_tok, TokenIdCmpNotEq);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateSawEq:
|
|
switch (c) {
|
|
case '=':
|
|
set_token_id(&t, t.cur_tok, TokenIdCmpEq);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
case '>':
|
|
set_token_id(&t, t.cur_tok, TokenIdFatArrow);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateSawStar:
|
|
switch (c) {
|
|
case '=':
|
|
set_token_id(&t, t.cur_tok, TokenIdTimesEq);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
case '*':
|
|
set_token_id(&t, t.cur_tok, TokenIdStarStar);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
case '%':
|
|
set_token_id(&t, t.cur_tok, TokenIdTimesPercent);
|
|
t.state = TokenizeStateSawStarPercent;
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateSawStarPercent:
|
|
switch (c) {
|
|
case '=':
|
|
set_token_id(&t, t.cur_tok, TokenIdTimesPercentEq);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateSawPercent:
|
|
switch (c) {
|
|
case '=':
|
|
set_token_id(&t, t.cur_tok, TokenIdModEq);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
case '.':
|
|
set_token_id(&t, t.cur_tok, TokenIdPercentDot);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateSawPlus:
|
|
switch (c) {
|
|
case '=':
|
|
set_token_id(&t, t.cur_tok, TokenIdPlusEq);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
case '+':
|
|
set_token_id(&t, t.cur_tok, TokenIdPlusPlus);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
case '%':
|
|
set_token_id(&t, t.cur_tok, TokenIdPlusPercent);
|
|
t.state = TokenizeStateSawPlusPercent;
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateSawPlusPercent:
|
|
switch (c) {
|
|
case '=':
|
|
set_token_id(&t, t.cur_tok, TokenIdPlusPercentEq);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateSawAmpersand:
|
|
switch (c) {
|
|
case '=':
|
|
set_token_id(&t, t.cur_tok, TokenIdBitAndEq);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateSawCaret:
|
|
switch (c) {
|
|
case '=':
|
|
set_token_id(&t, t.cur_tok, TokenIdBitXorEq);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateSawBar:
|
|
switch (c) {
|
|
case '=':
|
|
set_token_id(&t, t.cur_tok, TokenIdBitOrEq);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
case '|':
|
|
set_token_id(&t, t.cur_tok, TokenIdBarBar);
|
|
t.state = TokenizeStateSawBarBar;
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateSawBarBar:
|
|
switch (c) {
|
|
case '=':
|
|
set_token_id(&t, t.cur_tok, TokenIdBarBarEq);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
case TokenizeStateSawSlash:
|
|
switch (c) {
|
|
case '/':
|
|
cancel_token(&t);
|
|
t.state = TokenizeStateLineComment;
|
|
break;
|
|
case '=':
|
|
set_token_id(&t, t.cur_tok, TokenIdDivEq);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateSawBackslash:
|
|
switch (c) {
|
|
case '\\':
|
|
t.state = TokenizeStateLineString;
|
|
break;
|
|
default:
|
|
invalid_char_error(&t, c);
|
|
break;
|
|
}
|
|
break;
|
|
case TokenizeStateLineString:
|
|
switch (c) {
|
|
case '\n':
|
|
t.state = TokenizeStateLineStringEnd;
|
|
break;
|
|
default:
|
|
buf_append_char(&t.cur_tok->data.str_lit.str, c);
|
|
break;
|
|
}
|
|
break;
|
|
case TokenizeStateLineStringEnd:
|
|
switch (c) {
|
|
case WHITESPACE:
|
|
break;
|
|
case 'c':
|
|
if (!t.cur_tok->data.str_lit.is_c_str) {
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
}
|
|
t.state = TokenizeStateLineStringContinueC;
|
|
break;
|
|
case '\\':
|
|
if (t.cur_tok->data.str_lit.is_c_str) {
|
|
invalid_char_error(&t, c);
|
|
}
|
|
t.state = TokenizeStateLineStringContinue;
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateLineStringContinueC:
|
|
switch (c) {
|
|
case '\\':
|
|
t.state = TokenizeStateLineStringContinue;
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateLineStringContinue:
|
|
switch (c) {
|
|
case '\\':
|
|
t.state = TokenizeStateLineString;
|
|
buf_append_char(&t.cur_tok->data.str_lit.str, '\n');
|
|
break;
|
|
default:
|
|
invalid_char_error(&t, c);
|
|
break;
|
|
}
|
|
break;
|
|
case TokenizeStateLineComment:
|
|
switch (c) {
|
|
case '\n':
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
default:
|
|
// do nothing
|
|
break;
|
|
}
|
|
break;
|
|
case TokenizeStateSymbolFirstC:
|
|
switch (c) {
|
|
case '"':
|
|
set_token_id(&t, t.cur_tok, TokenIdStringLiteral);
|
|
t.cur_tok->data.str_lit.is_c_str = true;
|
|
t.state = TokenizeStateString;
|
|
break;
|
|
case '\\':
|
|
set_token_id(&t, t.cur_tok, TokenIdStringLiteral);
|
|
t.cur_tok->data.str_lit.is_c_str = true;
|
|
t.state = TokenizeStateSawBackslash;
|
|
break;
|
|
case SYMBOL_CHAR:
|
|
t.state = TokenizeStateSymbol;
|
|
buf_append_char(&t.cur_tok->data.str_lit.str, c);
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateSawAtSign:
|
|
switch (c) {
|
|
case '"':
|
|
set_token_id(&t, t.cur_tok, TokenIdSymbol);
|
|
t.state = TokenizeStateString;
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateSymbol:
|
|
switch (c) {
|
|
case SYMBOL_CHAR:
|
|
buf_append_char(&t.cur_tok->data.str_lit.str, c);
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateString:
|
|
switch (c) {
|
|
case '"':
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
case '\n':
|
|
tokenize_error(&t, "newline not allowed in string literal");
|
|
break;
|
|
case '\\':
|
|
t.state = TokenizeStateStringEscape;
|
|
break;
|
|
default:
|
|
buf_append_char(&t.cur_tok->data.str_lit.str, c);
|
|
break;
|
|
}
|
|
break;
|
|
case TokenizeStateStringEscape:
|
|
switch (c) {
|
|
case 'x':
|
|
t.state = TokenizeStateCharCode;
|
|
t.radix = 16;
|
|
t.char_code = 0;
|
|
t.char_code_index = 0;
|
|
t.char_code_end = 2;
|
|
t.unicode = false;
|
|
break;
|
|
case 'u':
|
|
t.state = TokenizeStateCharCode;
|
|
t.radix = 16;
|
|
t.char_code = 0;
|
|
t.char_code_index = 0;
|
|
t.char_code_end = 4;
|
|
t.unicode = true;
|
|
break;
|
|
case 'U':
|
|
t.state = TokenizeStateCharCode;
|
|
t.radix = 16;
|
|
t.char_code = 0;
|
|
t.char_code_index = 0;
|
|
t.char_code_end = 6;
|
|
t.unicode = true;
|
|
break;
|
|
case 'n':
|
|
handle_string_escape(&t, '\n');
|
|
break;
|
|
case 'r':
|
|
handle_string_escape(&t, '\r');
|
|
break;
|
|
case '\\':
|
|
handle_string_escape(&t, '\\');
|
|
break;
|
|
case 't':
|
|
handle_string_escape(&t, '\t');
|
|
break;
|
|
case '\'':
|
|
handle_string_escape(&t, '\'');
|
|
break;
|
|
case '"':
|
|
handle_string_escape(&t, '\"');
|
|
break;
|
|
default:
|
|
invalid_char_error(&t, c);
|
|
}
|
|
break;
|
|
case TokenizeStateCharCode:
|
|
{
|
|
uint32_t digit_value = get_digit_value(c);
|
|
if (digit_value >= t.radix) {
|
|
tokenize_error(&t, "invalid digit: '%c'", c);
|
|
}
|
|
t.char_code *= t.radix;
|
|
t.char_code += digit_value;
|
|
t.char_code_index += 1;
|
|
|
|
if (t.char_code_index >= t.char_code_end) {
|
|
if (t.unicode) {
|
|
if (t.char_code <= 0x7f) {
|
|
// 00000000 00000000 00000000 0xxxxxxx
|
|
handle_string_escape(&t, (uint8_t)t.char_code);
|
|
} else if (t.cur_tok->id == TokenIdCharLiteral) {
|
|
tokenize_error(&t, "unicode value too large for character literal: %x", t.char_code);
|
|
} else if (t.char_code <= 0x7ff) {
|
|
// 00000000 00000000 00000xxx xx000000
|
|
handle_string_escape(&t, (uint8_t)(0xc0 | (t.char_code >> 6)));
|
|
// 00000000 00000000 00000000 00xxxxxx
|
|
handle_string_escape(&t, (uint8_t)(0x80 | (t.char_code & 0x3f)));
|
|
} else if (t.char_code <= 0xffff) {
|
|
// 00000000 00000000 xxxx0000 00000000
|
|
handle_string_escape(&t, (uint8_t)(0xe0 | (t.char_code >> 12)));
|
|
// 00000000 00000000 0000xxxx xx000000
|
|
handle_string_escape(&t, (uint8_t)(0x80 | ((t.char_code >> 6) & 0x3f)));
|
|
// 00000000 00000000 00000000 00xxxxxx
|
|
handle_string_escape(&t, (uint8_t)(0x80 | (t.char_code & 0x3f)));
|
|
} else if (t.char_code <= 0x10ffff) {
|
|
// 00000000 000xxx00 00000000 00000000
|
|
handle_string_escape(&t, (uint8_t)(0xf0 | (t.char_code >> 18)));
|
|
// 00000000 000000xx xxxx0000 00000000
|
|
handle_string_escape(&t, (uint8_t)(0x80 | ((t.char_code >> 12) & 0x3f)));
|
|
// 00000000 00000000 0000xxxx xx000000
|
|
handle_string_escape(&t, (uint8_t)(0x80 | ((t.char_code >> 6) & 0x3f)));
|
|
// 00000000 00000000 00000000 00xxxxxx
|
|
handle_string_escape(&t, (uint8_t)(0x80 | (t.char_code & 0x3f)));
|
|
} else {
|
|
tokenize_error(&t, "unicode value out of range: %x", t.char_code);
|
|
}
|
|
} else {
|
|
if (t.cur_tok->id == TokenIdCharLiteral && t.char_code > UINT8_MAX) {
|
|
tokenize_error(&t, "value too large for character literal: '%x'",
|
|
t.char_code);
|
|
}
|
|
handle_string_escape(&t, (uint8_t)t.char_code);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case TokenizeStateCharLiteral:
|
|
switch (c) {
|
|
case '\'':
|
|
tokenize_error(&t, "expected character");
|
|
case '\\':
|
|
t.state = TokenizeStateStringEscape;
|
|
break;
|
|
default:
|
|
t.cur_tok->data.char_lit.c = c;
|
|
t.state = TokenizeStateCharLiteralEnd;
|
|
break;
|
|
}
|
|
break;
|
|
case TokenizeStateCharLiteralEnd:
|
|
switch (c) {
|
|
case '\'':
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
default:
|
|
invalid_char_error(&t, c);
|
|
}
|
|
break;
|
|
case TokenizeStateZero:
|
|
switch (c) {
|
|
case 'b':
|
|
t.radix = 2;
|
|
t.state = TokenizeStateNumber;
|
|
break;
|
|
case 'o':
|
|
t.radix = 8;
|
|
t.exp_add_amt = 3;
|
|
t.state = TokenizeStateNumber;
|
|
break;
|
|
case 'x':
|
|
t.radix = 16;
|
|
t.exp_add_amt = 4;
|
|
t.state = TokenizeStateNumber;
|
|
break;
|
|
default:
|
|
// reinterpret as normal number
|
|
t.pos -= 1;
|
|
t.state = TokenizeStateNumber;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateNumber:
|
|
{
|
|
if (c == '.') {
|
|
t.state = TokenizeStateNumberDot;
|
|
break;
|
|
}
|
|
if (is_exponent_signifier(c, t.radix)) {
|
|
t.state = TokenizeStateFloatExponentUnsigned;
|
|
assert(t.cur_tok->id == TokenIdIntLiteral);
|
|
bigint_init_bigint(&t.significand, &t.cur_tok->data.int_lit.bigint);
|
|
set_token_id(&t, t.cur_tok, TokenIdFloatLiteral);
|
|
break;
|
|
}
|
|
uint32_t digit_value = get_digit_value(c);
|
|
if (digit_value >= t.radix) {
|
|
if (is_symbol_char(c)) {
|
|
invalid_char_error(&t, c);
|
|
}
|
|
// not my char
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
BigInt digit_value_bi;
|
|
bigint_init_unsigned(&digit_value_bi, digit_value);
|
|
|
|
BigInt radix_bi;
|
|
bigint_init_unsigned(&radix_bi, t.radix);
|
|
|
|
BigInt multiplied;
|
|
bigint_mul(&multiplied, &t.cur_tok->data.int_lit.bigint, &radix_bi);
|
|
|
|
bigint_add(&t.cur_tok->data.int_lit.bigint, &multiplied, &digit_value_bi);
|
|
break;
|
|
}
|
|
case TokenizeStateNumberDot:
|
|
{
|
|
if (c == '.') {
|
|
t.pos -= 2;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
t.pos -= 1;
|
|
t.state = TokenizeStateFloatFraction;
|
|
assert(t.cur_tok->id == TokenIdIntLiteral);
|
|
bigint_init_bigint(&t.significand, &t.cur_tok->data.int_lit.bigint);
|
|
set_token_id(&t, t.cur_tok, TokenIdFloatLiteral);
|
|
continue;
|
|
}
|
|
case TokenizeStateFloatFraction:
|
|
{
|
|
if (is_exponent_signifier(c, t.radix)) {
|
|
t.state = TokenizeStateFloatExponentUnsigned;
|
|
break;
|
|
}
|
|
uint32_t digit_value = get_digit_value(c);
|
|
if (digit_value >= t.radix) {
|
|
if (is_symbol_char(c)) {
|
|
invalid_char_error(&t, c);
|
|
}
|
|
// not my char
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
t.exponent_in_bin_or_dec -= t.exp_add_amt;
|
|
if (t.radix == 10) {
|
|
// For now we use strtod to parse decimal floats, so we just have to get to the
|
|
// end of the token.
|
|
break;
|
|
}
|
|
BigInt digit_value_bi;
|
|
bigint_init_unsigned(&digit_value_bi, digit_value);
|
|
|
|
BigInt radix_bi;
|
|
bigint_init_unsigned(&radix_bi, t.radix);
|
|
|
|
BigInt multiplied;
|
|
bigint_mul(&multiplied, &t.significand, &radix_bi);
|
|
|
|
bigint_add(&t.significand, &multiplied, &digit_value_bi);
|
|
break;
|
|
}
|
|
case TokenizeStateFloatExponentUnsigned:
|
|
switch (c) {
|
|
case '+':
|
|
t.is_exp_negative = false;
|
|
t.state = TokenizeStateFloatExponentNumber;
|
|
break;
|
|
case '-':
|
|
t.is_exp_negative = true;
|
|
t.state = TokenizeStateFloatExponentNumber;
|
|
break;
|
|
default:
|
|
// reinterpret as normal exponent number
|
|
t.pos -= 1;
|
|
t.is_exp_negative = false;
|
|
t.state = TokenizeStateFloatExponentNumber;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateFloatExponentNumber:
|
|
{
|
|
uint32_t digit_value = get_digit_value(c);
|
|
if (digit_value >= t.radix) {
|
|
if (is_symbol_char(c)) {
|
|
invalid_char_error(&t, c);
|
|
}
|
|
// not my char
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
if (t.radix == 10) {
|
|
// For now we use strtod to parse decimal floats, so we just have to get to the
|
|
// end of the token.
|
|
break;
|
|
}
|
|
BigInt digit_value_bi;
|
|
bigint_init_unsigned(&digit_value_bi, digit_value);
|
|
|
|
BigInt radix_bi;
|
|
bigint_init_unsigned(&radix_bi, 10);
|
|
|
|
BigInt multiplied;
|
|
bigint_mul(&multiplied, &t.specified_exponent, &radix_bi);
|
|
|
|
bigint_add(&t.specified_exponent, &multiplied, &digit_value_bi);
|
|
}
|
|
break;
|
|
case TokenizeStateSawDash:
|
|
switch (c) {
|
|
case '>':
|
|
set_token_id(&t, t.cur_tok, TokenIdArrow);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
case '=':
|
|
set_token_id(&t, t.cur_tok, TokenIdMinusEq);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
case '%':
|
|
set_token_id(&t, t.cur_tok, TokenIdMinusPercent);
|
|
t.state = TokenizeStateSawMinusPercent;
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizeStateSawMinusPercent:
|
|
switch (c) {
|
|
case '=':
|
|
set_token_id(&t, t.cur_tok, TokenIdMinusPercentEq);
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
break;
|
|
default:
|
|
t.pos -= 1;
|
|
end_token(&t);
|
|
t.state = TokenizeStateStart;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
if (c == '\n') {
|
|
out->line_offsets->append(t.pos + 1);
|
|
t.line += 1;
|
|
t.column = 0;
|
|
} else {
|
|
t.column += 1;
|
|
}
|
|
}
|
|
// EOF
|
|
switch (t.state) {
|
|
case TokenizeStateStart:
|
|
case TokenizeStateError:
|
|
break;
|
|
case TokenizeStateNumberDot:
|
|
tokenize_error(&t, "unterminated number literal");
|
|
break;
|
|
case TokenizeStateString:
|
|
tokenize_error(&t, "unterminated string");
|
|
break;
|
|
case TokenizeStateStringEscape:
|
|
case TokenizeStateCharCode:
|
|
if (t.cur_tok->id == TokenIdStringLiteral) {
|
|
tokenize_error(&t, "unterminated string");
|
|
} else if (t.cur_tok->id == TokenIdCharLiteral) {
|
|
tokenize_error(&t, "unterminated character literal");
|
|
} else {
|
|
zig_unreachable();
|
|
}
|
|
break;
|
|
case TokenizeStateCharLiteral:
|
|
case TokenizeStateCharLiteralEnd:
|
|
tokenize_error(&t, "unterminated character literal");
|
|
break;
|
|
case TokenizeStateSymbol:
|
|
case TokenizeStateSymbolFirstC:
|
|
case TokenizeStateZero:
|
|
case TokenizeStateNumber:
|
|
case TokenizeStateFloatFraction:
|
|
case TokenizeStateFloatExponentUnsigned:
|
|
case TokenizeStateFloatExponentNumber:
|
|
case TokenizeStateSawStar:
|
|
case TokenizeStateSawSlash:
|
|
case TokenizeStateSawPercent:
|
|
case TokenizeStateSawPlus:
|
|
case TokenizeStateSawDash:
|
|
case TokenizeStateSawAmpersand:
|
|
case TokenizeStateSawCaret:
|
|
case TokenizeStateSawBar:
|
|
case TokenizeStateSawEq:
|
|
case TokenizeStateSawBang:
|
|
case TokenizeStateSawLessThan:
|
|
case TokenizeStateSawLessThanLessThan:
|
|
case TokenizeStateSawGreaterThan:
|
|
case TokenizeStateSawGreaterThanGreaterThan:
|
|
case TokenizeStateSawDot:
|
|
case TokenizeStateSawQuestionMark:
|
|
case TokenizeStateSawAtSign:
|
|
case TokenizeStateSawStarPercent:
|
|
case TokenizeStateSawPlusPercent:
|
|
case TokenizeStateSawMinusPercent:
|
|
case TokenizeStateLineString:
|
|
case TokenizeStateLineStringEnd:
|
|
case TokenizeStateSawBarBar:
|
|
end_token(&t);
|
|
break;
|
|
case TokenizeStateSawDotDot:
|
|
case TokenizeStateSawBackslash:
|
|
case TokenizeStateLineStringContinue:
|
|
case TokenizeStateLineStringContinueC:
|
|
tokenize_error(&t, "unexpected EOF");
|
|
break;
|
|
case TokenizeStateLineComment:
|
|
break;
|
|
}
|
|
if (t.state != TokenizeStateError) {
|
|
if (t.tokens->length > 0) {
|
|
Token *last_token = &t.tokens->last();
|
|
t.line = (int)last_token->start_line;
|
|
t.column = (int)last_token->start_column;
|
|
t.pos = last_token->start_pos;
|
|
} else {
|
|
t.pos = 0;
|
|
}
|
|
begin_token(&t, TokenIdEof);
|
|
end_token(&t);
|
|
assert(!t.cur_tok);
|
|
}
|
|
}
|
|
|
|
const char * token_name(TokenId id) {
|
|
switch (id) {
|
|
case TokenIdAmpersand: return "&";
|
|
case TokenIdArrow: return "->";
|
|
case TokenIdAtSign: return "@";
|
|
case TokenIdBang: return "!";
|
|
case TokenIdBarBar: return "||";
|
|
case TokenIdBinOr: return "|";
|
|
case TokenIdBinXor: return "^";
|
|
case TokenIdBitAndEq: return "&=";
|
|
case TokenIdBitOrEq: return "|=";
|
|
case TokenIdBitShiftLeft: return "<<";
|
|
case TokenIdBitShiftLeftEq: return "<<=";
|
|
case TokenIdBitShiftRight: return ">>";
|
|
case TokenIdBitShiftRightEq: return ">>=";
|
|
case TokenIdBitXorEq: return "^=";
|
|
case TokenIdCharLiteral: return "CharLiteral";
|
|
case TokenIdCmpEq: return "==";
|
|
case TokenIdCmpGreaterOrEq: return ">=";
|
|
case TokenIdCmpGreaterThan: return ">";
|
|
case TokenIdCmpLessOrEq: return "<=";
|
|
case TokenIdCmpLessThan: return "<";
|
|
case TokenIdCmpNotEq: return "!=";
|
|
case TokenIdColon: return ":";
|
|
case TokenIdComma: return ",";
|
|
case TokenIdDash: return "-";
|
|
case TokenIdDivEq: return "/=";
|
|
case TokenIdDot: return ".";
|
|
case TokenIdDoubleQuestion: return "??";
|
|
case TokenIdEllipsis2: return "..";
|
|
case TokenIdEllipsis3: return "...";
|
|
case TokenIdEof: return "EOF";
|
|
case TokenIdEq: return "=";
|
|
case TokenIdFatArrow: return "=>";
|
|
case TokenIdFloatLiteral: return "FloatLiteral";
|
|
case TokenIdIntLiteral: return "IntLiteral";
|
|
case TokenIdKeywordAsync: return "async";
|
|
case TokenIdKeywordAwait: return "await";
|
|
case TokenIdKeywordResume: return "resume";
|
|
case TokenIdKeywordSuspend: return "suspend";
|
|
case TokenIdKeywordCancel: return "cancel";
|
|
case TokenIdKeywordAlign: return "align";
|
|
case TokenIdKeywordAnd: return "and";
|
|
case TokenIdKeywordAsm: return "asm";
|
|
case TokenIdKeywordBreak: return "break";
|
|
case TokenIdKeywordCatch: return "catch";
|
|
case TokenIdKeywordCompTime: return "comptime";
|
|
case TokenIdKeywordConst: return "const";
|
|
case TokenIdKeywordContinue: return "continue";
|
|
case TokenIdKeywordDefer: return "defer";
|
|
case TokenIdKeywordElse: return "else";
|
|
case TokenIdKeywordEnum: return "enum";
|
|
case TokenIdKeywordErrdefer: return "errdefer";
|
|
case TokenIdKeywordError: return "error";
|
|
case TokenIdKeywordExport: return "export";
|
|
case TokenIdKeywordExtern: return "extern";
|
|
case TokenIdKeywordFalse: return "false";
|
|
case TokenIdKeywordFn: return "fn";
|
|
case TokenIdKeywordFor: return "for";
|
|
case TokenIdKeywordIf: return "if";
|
|
case TokenIdKeywordInline: return "inline";
|
|
case TokenIdKeywordNakedCC: return "nakedcc";
|
|
case TokenIdKeywordNoAlias: return "noalias";
|
|
case TokenIdKeywordNull: return "null";
|
|
case TokenIdKeywordOr: return "or";
|
|
case TokenIdKeywordPacked: return "packed";
|
|
case TokenIdKeywordPromise: return "promise";
|
|
case TokenIdKeywordPub: return "pub";
|
|
case TokenIdKeywordReturn: return "return";
|
|
case TokenIdKeywordSection: return "section";
|
|
case TokenIdKeywordStdcallCC: return "stdcallcc";
|
|
case TokenIdKeywordStruct: return "struct";
|
|
case TokenIdKeywordSwitch: return "switch";
|
|
case TokenIdKeywordTest: return "test";
|
|
case TokenIdKeywordThis: return "this";
|
|
case TokenIdKeywordTrue: return "true";
|
|
case TokenIdKeywordTry: return "try";
|
|
case TokenIdKeywordUndefined: return "undefined";
|
|
case TokenIdKeywordUnion: return "union";
|
|
case TokenIdKeywordUnreachable: return "unreachable";
|
|
case TokenIdKeywordUse: return "use";
|
|
case TokenIdKeywordVar: return "var";
|
|
case TokenIdKeywordVolatile: return "volatile";
|
|
case TokenIdKeywordWhile: return "while";
|
|
case TokenIdLBrace: return "{";
|
|
case TokenIdLBracket: return "[";
|
|
case TokenIdLParen: return "(";
|
|
case TokenIdMaybe: return "?";
|
|
case TokenIdMaybeAssign: return "?=";
|
|
case TokenIdMinusEq: return "-=";
|
|
case TokenIdMinusPercent: return "-%";
|
|
case TokenIdMinusPercentEq: return "-%=";
|
|
case TokenIdModEq: return "%=";
|
|
case TokenIdNumberSign: return "#";
|
|
case TokenIdPercent: return "%";
|
|
case TokenIdPercentDot: return "%.";
|
|
case TokenIdPlus: return "+";
|
|
case TokenIdPlusEq: return "+=";
|
|
case TokenIdPlusPercent: return "+%";
|
|
case TokenIdPlusPercentEq: return "+%=";
|
|
case TokenIdPlusPlus: return "++";
|
|
case TokenIdRBrace: return "}";
|
|
case TokenIdRBracket: return "]";
|
|
case TokenIdRParen: return ")";
|
|
case TokenIdSemicolon: return ";";
|
|
case TokenIdSlash: return "/";
|
|
case TokenIdStar: return "*";
|
|
case TokenIdStarStar: return "**";
|
|
case TokenIdStringLiteral: return "StringLiteral";
|
|
case TokenIdSymbol: return "Symbol";
|
|
case TokenIdTilde: return "~";
|
|
case TokenIdTimesEq: return "*=";
|
|
case TokenIdTimesPercent: return "*%";
|
|
case TokenIdTimesPercentEq: return "*%=";
|
|
case TokenIdBarBarEq: return "||=";
|
|
}
|
|
return "(invalid token)";
|
|
}
|
|
|
|
void print_tokens(Buf *buf, ZigList<Token> *tokens) {
|
|
for (size_t i = 0; i < tokens->length; i += 1) {
|
|
Token *token = &tokens->at(i);
|
|
fprintf(stderr, "%s ", token_name(token->id));
|
|
if (token->start_pos != SIZE_MAX) {
|
|
fwrite(buf_ptr(buf) + token->start_pos, 1, token->end_pos - token->start_pos, stderr);
|
|
}
|
|
fprintf(stderr, "\n");
|
|
}
|
|
}
|
|
|
|
bool valid_symbol_starter(uint8_t c) {
|
|
switch (c) {
|
|
case SYMBOL_START:
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|