member access to work with `=` and `?:` 982041f Update README b35d148 Add __attribute__((aligned(N)) for struct declaration 44bea4c Add __attribute__((packed)) 395308c redefinition 2ed3fda Add test/thirdparty/cpython.sh 0a5d08c Complete stdatomic.h d69a11d Add _Atomic and atomic ++, -- and op= operators 80ea9d4 Add atomic_exchange ca27455 Add atomic_compare_exchange fb49370 Add scripts to test third-party apps 469f159 Add -Xlinker option d1bc9a4 Add -Wl, option c8df787 Add -L option 4e5de36 Add -shared option 1e9b6dd Add -static option f10bceb [GNU] Add #include_next a6c6622 [GNU] Add "#pragma once" d48d9e5 Add include guard optimization c0f0614 Cache file search results 86785fc Add -fpic and -fPIC options c3edffb Add -MMD option 7aa72e4 Add -MQ option fb5cfe5 Add -MD option db850f3 Add -MT option 57c1d4e Add -MP option 95d5a46 Add -MF option d0c4667 Add -M option f694413 Use hashmap for keyword lookup 655954e Use hashmap for block-scope lookup 30520e5 Use hashmap for macro name lookup 0aad326 Add string hashmap f0c98e0 [GNU] Treat labels-as-values as compile-time constant 4f165ec [GNU] Support labels-as-values 3d5550e [GNU] Support array range designator d90c73b [GNU] Support case ranges e0bf168 Add long double d56dd2f Recognize .a and .so files 8d130ab Emit size and type for symbols c32f0e2 Add -s option bc25279 Add -l option b0109a3 Do not define __STDC_NO_VLA__ 2fa8f48 Support sizeof(typename) where typename is a VLA 07f9010 Add pointer arithmetic for VLA e8667af Add sizeof() for VLA 77275c5 Add alloca() 4064871 Make -E to imply -xc ee0a951 Add -x option 8f5ff07 Add -include option b377284 Add thread-local variable 6d344ed Add -fcommon and -fno-common flags 85e46b1 Add tentative definition 1b99bad Add offsetof 11fc259 Add -idirafter option 6a2dc5a Use __attribute__((format(print, ...))) to find programming errors e5f4ca9 Do not emit static inline functions if referenced by no one 31087f8 Handle inline functions as static functions a253516 Add basic "asm" statement e28a612 [GNU] Add ?: operator with omitted operand aee7891 [GNU] Allow sizeof(<function type>) 1faab48 Add _Generic 1433b40 [GNU] Add __builtin_types_compatible_p 7d80a51 Add typeof 007e526 [GNU] Support GCC-style variadic macro 74ec9f6 Ignore #pragma 083c275 [GNU] Handle ,##__VA_ARG__ 3381448 Add __VA_OPT__ 3a10c8a [GNU] Add __BASE_FILE__ macro 922604a [GNU] Add __TIMESTAMP__ macro aaf20fb [GNU] Add line marker directive c61c0d0 Add #line 37998be Improve error message for multibyte characters 95eb5b0 Handle struct designator for anonymous struct member 31dc1df Add union designated initializer 67f5834 Add struct designated initializer 691c4fa [GNU] Allow to omit "=" in designated initializers 835cd24 Allow array designators to initialize incomplete arrays c618c3b Add array designated initializer 2b2fa25 Skip UTF-8 BOM markers 2382777 Allow to concatenate regular string literals with L/u/U string literals adb8b98 [GNU] Accept $ as an identifier character 0e5d250 Allow multibyte UTF-8 character in identifier e4491b8 Define __STDC_UTF_{16,32}__ macros 6adba75 Add UTF-32 string literal initializer 36230e0 Add UTF-16 string literal initializer cae061a Add wide string literal c467ee6 Add UTF-32 string literal 9cabe1f Add UTF-16 string literal 57b21fe Add UTF-8 string literal 2dac3af Add UTF-32 character literal 454618c Add UTF-16 character literal a57c661 Accept multibyte character as wide character literal c31886a Add \u and \U escape sequences 74bcec5 Canonicalize newline character 0e77f3d [GNU] Add __COUNTER__ macro e27417f Add __DATE__ and __TIME__ macros c3075b3 Add anonymous struct and union 9c36dd7 Make "main" to implicitly return 0 5257ee0 Make an array of at least 16 bytes long to have alignment of at least 16 bytes 2c91da5 Turn on -Wall compiler flag and fix compiler warnings b1fdddf Ignore -O, -W and -g and other flags 2bdc6b8 Write to an in-memory buffer before writing to an actual output file c302a96 Do not allow to obtain an address of a bitfield 17ea802 Handle zero-width bitfield member 54c2b3b Handle op=-style assignments to bitfields 441a89b Support global struct bitfield initializer cc852fe Add bitfield be8b6f6 Add -U option fc69f5c Add -D option 3f2c2d5 Tokenize numeric tokens as pp-numbers e0b5da3 Dereferencing a function shouldn't do anything 603de50 Add va_copy() b6d3cd0 Allow variadic function to take more than 6 parameters d7bad96 Allow to define a function returning a struct c72df1c Allow to call a fucntion returning a struct d63b1f4 Allow struct argument 5e0f8c4 Allow struct parameter 9021f7f Support passed-on-stack parameters b29f052 Support passed-on-stack arguments 12a9e75 Self-host: including preprocessor, chibicc can compile itself 5322ea8 Add va_arg() 7cbfd11 Add stdarg.h, stdbool.h, stddef.h, stdalign.h and float.h 7746e4e Recognize wide character literal ab4f1e1 Concatenate adjacent string literals 82ba010 [GNU] Add __FUNCTION__ ba6b4b6 Add __func__ dc01f94 Add __VA_ARGS__ 6f17071 Add __FILE__ and __LINE__ 5f5a850 Add predefine macros such as __STDC__ e7fdc2e Add #error a939a7a Add default include paths a1dd621 Add -I<dir> option d85fc4f Add #include <...> b33fe0e Support line continuation 8075582 Preserve newline and space during macro expansion a8d76ad Replace remaining identifiers with 0 in macro constexpr 5cb2f89 Add defined() macro operator 769b5a0 Use chibicc's preprocessor for all tests 8f561ae Add macro token-pasting operator (##) 8f6f792 Add macro stringizing operator (#) 1313fc6 Do not expand a token more than once for the same funclike macro c7d7ce0 Allow parenthesized expressions as macro arguments dd4306c Allow empty macro arguments b9ad3e4 Add multi-arity funclike #define dec3b3f Add zero-arity funclike #define 1f80f58 Add #ifdef and #ifndef acce002 Do not expand a token more than once for the same objlike macro 2651448 Expand macros in the #if and #elif argument context 9ad60e4 Add #undef 97d33ad Add objlike #define e7a1857 Add #elif c6e81d2 Add #else aa570f3 Skip nested #if in a skipped #if-clause bf6ff92 Add #if and #endif d138864 Add -E option ec149f6 Skip extra tokens after `#include "..."` d367510 Add #include "..." 146c7b3 Add the null directive 1e1ea39 Add a do-nothing preprocessor 8b726b5 Run "ld" unless -c is given b833cd0 Accept multiple input files 140b433 Run "as" command unless -S is given f3d9613 Split cc1 from compiler driver 53e8103 Add usual arithmetic conversion for function pointer c5953ba Decay a function to a pointer in the func param context d06a8ac Add function pointer 5d15431 Add stage2 build 9bf9612 Add "long double" as an alias for "double" ffea421 Add flonum constant expression e452cf7 Support variadic function with floating-point parameters 8b14859 Implement default argument promotion for float c6b3056 Allow to define a function that takes/returns flonums 8ec1ebf Allow to call a function that takes/returns flonums 0ce1093 Handle flonum for if, while, do, !, ?:, || and && 83f76eb Add flonum +, -, * and / cf9ceec Add flonum ==, !=, < and <= 29de46a Add "float" and "double" local variables and casts 1e57f72 Add floating-point constant 1fad259 Allow to omit parameter name in function declaration 93d1277 Ignore "static" and "const" in array-dimensions b773554 Ignore const, volatile, auto, register, restrict or _Noreturn. 7ba6fe8 Handle unsigned types in the constant expression 6880a39 When comparing two pointers, treat them as unsigned 8b8f3de Use long or ulong instead of int for some expressions aaf1045 Add U, L and LL suffixes 34ab83b Add unsigned integral types 3f59ce7 Add `signed` keyword 197689a Check the number of function arguments 754a24f Add va_start to support variadic functions 58fc861 Allow to call a variadic function dcd4579 Handle a function returning bool, char or short 6a0ed71 Align stack frame to 16 byte boundaries ee252e6 Add do ... while eb85527 Add static global variables 30b3e21 Add return that doesn't take any value 127056d Add compound literals 319772b Add static local variables 310a87e [GNU] Allow a variable as an operand of _Alignof 9df5178 Add _Alignof and _Alignas 2764745 Handle extern declarations in a block 006a45c Add extern 157356c Align global variables 7a1f816 Accept `void` as a parameter list cd688a8 Allow to initialize struct flexible array member 824543b Add flexible array member 3d216e3 Emit uninitialized global data to .bss instead of .data fde464c Allow extraneous comma at the end of enum or initializer list a58958c Allow extraneous braces for scalar initializer efa0f33 Allow parentheses in initializers to be omitted 1eae5ae Handle union initializers for global variable eeb62b6 Add struct initializer for global variable bbfe3f4 Add global initializer for scalar and string 483b194 Handle union initializers for local variables aca19dd Allow to initialize a struct with other struct e9d2c46 Handle struct initializers for local variables 5b95533 Allow to omit array length if an initializer is given 0d71737 Add string literal initializer a754732 Skip excess initializer elements ae0a37d Initialize excess array elements with zero 22dd560 Support local variable initializers 79f5de2 Add constant expression 447ee09 Add ?: operator d0c0cb7 Add <<, >>, <<= and >>= 044d9ae Add switch-case 3c83dfd Add continue statement b3047f2 Add break statement a4be55b Resolve conflict between labels and typedefs 6116cae Add goto and labeled statement 61a1055 Add a notion of an incomplete struct type 7963221 Decay an array to a pointer in the func param context 29ed294 Add a notion of an incomplete array type f30f781 Add && and || 8644006 Add &, |, ^, &=, |= and ^= daa7398 Add % and %= 46a96d6 Add ~ operator 6b88bcb Add ! operator 7df934d Add hexadecimal, octal and binary number literals e8ca48c Add post ++ and -- 47f1937 Add pre ++ and -- 01a94c0 Add +=, -=, *= and /= a4fea2b Allow for-loops to define local variables 736232f Support file-scope functions 48ba265 Add enum aa0accc Add character literal 44bba96 Add _Bool type fdc80bc Handle function argument type conversion 818352a Handle return type conversion 9e211cb Report an error on undefined/undeclared functions 8b430a6 Implement usual arithmetic conversion cfc4fa9 Add type cast cb81a37 Use 32 bit registers for char, short and int 67543ea Make sizeof to accept not only an expression but also a typename a6b82da Add typedef f46370e Add `long long` as an alias for `long` 287906a Handle complex type declarations correctly 8c3503b Add void type 74e3acc Add function declaration a817b23 Add nested type declarators 9d48eef Add short type 43c2f08 Add long type 5831eda Change size of int from 8 to 4 bef0543 Add struct assignment 11e3841 Add union f0a018a Add -> operator e1e831e Support struct tags dfec115 Align local variables 9443e4b Align struct members f814033 Add struct e6307ad Add comma operator 1c91d19 Emit .file and .loc assembler directives 6647ad9 Precompute line number for each token cd832a3 Rewrite tests in shell script in C ca8b243 Handle block scope 6c0a429 Add line and block comments a0388ba Add -o and --help options 7b8528f Refactor -- no functionality change d9ea597 Read code from a file instead of argv[1] 9dae234 [GNU] Add statement expression c2cc1d3 Add \x<hexadecimal-sequence> 699d2b7 Add \<octal-sequence> ad7749f Add \a, \b, \t, \n \v, \f, \r and \e 35a0bcd Refactoring: Add a utility function 4cedda2 Add string literal be38d63 Add char type a4d3223 Add global variables 0b76634 Merge Function with Var 3e55caf Add sizeof 648646b Add [] operator 3ce1b2d Add arrays of arrays 8b6395d Add one dimensional arrays aacc0cf Support function definition up to 6 parameters 6cb4220 Support zero-arity function definition 964b1d2 Support function call with up to 6 arguments 30a3992 Support zero-arity function calls b4e82cf Add keyword "int" and make variable definition mandatory a6bc4ab Make pointer arithmetic work 863e2b8 Add unary & and * 3d86277 Add a representative node to each Node to improve error messages 5b142b1 Add LICENSE and README.md 1f3eb34 Add "while" statement f5d480f Add "for" statement 72b8415 Add "if" statement ff8912c Add null statement 18ac283 Add { ... } 6cc1c1f Add "return" statement 482c26b Support multi-letter local variables 1f9f3ad Support single-letter local variables 76cae0a Accept multiple statements separated by semicolons 725badf Split main.c into multiple small files 25b4b85 Add ==, !=, <= and >= operators bf9ab52 Add unary plus and minus 84cfcaf Add *, / and () cc5a6d9 Improve error message a1ab0ff Add a tokenizer to allow space characters between tokens bf7081f Add + and - operators 0522e2d Compile an integer to an exectuable that exits with the given number
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![長谷川智希 @tomzoh 低レイヤを知りたいPHPerのためのCコンパイラ作成入門 STEP2: 加減算の実装 48 [$number, $string] = extLeadNumber($argv[1]);](https://files.speakerdeck.com/presentations/400fcd64315e4927a82126129b165080/slide_252.jpg){kind=link}
