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better parsing of C macros

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See #88
This commit is contained in:
Andrew Kelley 2016-04-21 15:48:13 -07:00
parent a380b803ac
commit 35362f8137
5 changed files with 805 additions and 205 deletions
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1
CMakeLists.txt
View File

@ -40,6 +40,7 @@ set(ZIG_SOURCES
"${CMAKE_SOURCE_DIR}/src/ast_render.cpp"
"${CMAKE_SOURCE_DIR}/src/bignum.cpp"
"${CMAKE_SOURCE_DIR}/src/tokenizer.cpp"
"${CMAKE_SOURCE_DIR}/src/c_tokenizer.cpp"
"${CMAKE_SOURCE_DIR}/src/parser.cpp"
"${CMAKE_SOURCE_DIR}/src/eval.cpp"
"${CMAKE_SOURCE_DIR}/src/analyze.cpp"

651
src/c_tokenizer.cpp Normal file
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@ -0,0 +1,651 @@
/*
* Copyright (c) 2016 Andrew Kelley
*
* This file is part of zig, which is MIT licensed.
* See http://opensource.org/licenses/MIT
*/
#include "c_tokenizer.hpp"
#include <inttypes.h>
#define WHITESPACE_EXCEPT_N \
' ': \
case '\t': \
case '\v': \
case '\f'
#define DIGIT_NON_ZERO \
'1': \
case '2': \
case '3': \
case '4': \
case '5': \
case '6': \
case '7': \
case '8': \
case '9'
#define DIGIT \
'0': \
case DIGIT_NON_ZERO
#define ALPHA \
'a': \
case 'b': \
case 'c': \
case 'd': \
case 'e': \
case 'f': \
case 'g': \
case 'h': \
case 'i': \
case 'j': \
case 'k': \
case 'l': \
case 'm': \
case 'n': \
case 'o': \
case 'p': \
case 'q': \
case 'r': \
case 's': \
case 't': \
case 'u': \
case 'v': \
case 'w': \
case 'x': \
case 'y': \
case 'z': \
case 'A': \
case 'B': \
case 'C': \
case 'D': \
case 'E': \
case 'F': \
case 'G': \
case 'H': \
case 'I': \
case 'J': \
case 'K': \
case 'L': \
case 'M': \
case 'N': \
case 'O': \
case 'P': \
case 'Q': \
case 'R': \
case 'S': \
case 'T': \
case 'U': \
case 'V': \
case 'W': \
case 'X': \
case 'Y': \
case 'Z'
#define IDENT_START \
ALPHA: \
case '_'
#define IDENT \
IDENT_START: \
case DIGIT
static void begin_token(CTokenize *ctok, CTokId id) {
assert(ctok->cur_tok == nullptr);
ctok->tokens.add_one();
ctok->cur_tok = &ctok->tokens.last();
ctok->cur_tok->id = id;
switch (id) {
case CTokIdStrLit:
memset(&ctok->cur_tok->data.str_lit, 0, sizeof(Buf));
buf_resize(&ctok->cur_tok->data.str_lit, 0);
break;
case CTokIdSymbol:
memset(&ctok->cur_tok->data.symbol, 0, sizeof(Buf));
buf_resize(&ctok->cur_tok->data.symbol, 0);
break;
case CTokIdCharLit:
case CTokIdNumLitInt:
case CTokIdNumLitFloat:
case CTokIdMinus:
break;
}
}
static void end_token(CTokenize *ctok) {
ctok->cur_tok = nullptr;
}
static void mark_error(CTokenize *ctok) {
ctok->error = true;
}
static void add_char(CTokenize *ctok, uint8_t c) {
assert(ctok->cur_tok);
if (ctok->cur_tok->id == CTokIdCharLit) {
ctok->cur_tok->data.char_lit = c;
ctok->state = CTokStateExpectEndQuot;
} else if (ctok->cur_tok->id == CTokIdStrLit) {
buf_append_char(&ctok->cur_tok->data.str_lit, c);
ctok->state = CTokStateString;
} else {
zig_unreachable();
}
}
static void hex_digit(CTokenize *ctok, uint8_t value) {
// TODO @mul_with_overflow
ctok->cur_tok->data.num_lit_int *= 16;
// TODO @add_with_overflow
ctok->cur_tok->data.num_lit_int += value;
static const uint8_t hex_digit[] = "0123456789abcdef";
buf_append_char(&ctok->buf, hex_digit[value]);
}
static void end_float(CTokenize *ctok) {
// TODO detect errors, overflow, and underflow
double value = strtod(buf_ptr(&ctok->buf), nullptr);
ctok->cur_tok->data.num_lit_float = value;
end_token(ctok);
ctok->state = CTokStateStart;
}
void tokenize_c_macro(CTokenize *ctok, const uint8_t *c) {
ctok->tokens.resize(0);
ctok->state = CTokStateStart;
ctok->error = false;
ctok->cur_tok = nullptr;
buf_resize(&ctok->buf, 0);
for (; *c; c += 1) {
switch (ctok->state) {
case CTokStateStart:
switch (*c) {
case WHITESPACE_EXCEPT_N:
break;
case '\'':
ctok->state = CTokStateExpectChar;
begin_token(ctok, CTokIdCharLit);
break;
case '\"':
ctok->state = CTokStateString;
begin_token(ctok, CTokIdStrLit);
break;
case '/':
ctok->state = CTokStateOpenComment;
break;
case '\\':
ctok->state = CTokStateBackslash;
break;
case '\n':
goto found_end_of_macro;
case IDENT_START:
ctok->state = CTokStateIdentifier;
begin_token(ctok, CTokIdSymbol);
buf_append_char(&ctok->cur_tok->data.symbol, *c);
break;
case DIGIT_NON_ZERO:
ctok->state = CTokStateDecimal;
ctok->unsigned_suffix = false;
ctok->long_suffix = false;
begin_token(ctok, CTokIdNumLitInt);
ctok->cur_tok->data.num_lit_int = *c - '0';
buf_resize(&ctok->buf, 0);
buf_append_char(&ctok->buf, *c);
break;
case '0':
ctok->state = CTokStateGotZero;
ctok->unsigned_suffix = false;
ctok->long_suffix = false;
begin_token(ctok, CTokIdNumLitInt);
ctok->cur_tok->data.num_lit_int = 0;
buf_resize(&ctok->buf, 0);
buf_append_char(&ctok->buf, '0');
break;
case '.':
begin_token(ctok, CTokIdNumLitFloat);
ctok->state = CTokStateFloat;
buf_init_from_str(&ctok->buf, "0.");
break;
default:
return mark_error(ctok);
}
break;
case CTokStateFloat:
switch (*c) {
case 'e':
case 'E':
buf_append_char(&ctok->buf, 'e');
ctok->state = CTokStateExpSign;
break;
case 'f':
case 'F':
case 'l':
case 'L':
end_float(ctok);
break;
case DIGIT:
buf_append_char(&ctok->buf, *c);
break;
default:
c -= 1;
end_float(ctok);
continue;
}
break;
case CTokStateExpSign:
switch (*c) {
case '+':
case '-':
ctok->state = CTokStateFloatExpFirst;
buf_append_char(&ctok->buf, *c);
break;
case DIGIT:
ctok->state = CTokStateFloatExp;
buf_append_char(&ctok->buf, *c);
break;
default:
return mark_error(ctok);
}
break;
case CTokStateFloatExpFirst:
switch (*c) {
case DIGIT:
buf_append_char(&ctok->buf, *c);
ctok->state = CTokStateFloatExp;
break;
default:
return mark_error(ctok);
}
break;
case CTokStateFloatExp:
switch (*c) {
case DIGIT:
buf_append_char(&ctok->buf, *c);
break;
case 'f':
case 'F':
case 'l':
case 'L':
end_float(ctok);
break;
default:
c -= 1;
end_float(ctok);
continue;
}
break;
case CTokStateDecimal:
switch (*c) {
case DIGIT:
buf_append_char(&ctok->buf, *c);
// TODO @mul_with_overflow
ctok->cur_tok->data.num_lit_int *= 10;
// TODO @add_with_overflow
ctok->cur_tok->data.num_lit_int += *c - '0';
break;
case '\'':
break;
case 'u':
case 'U':
ctok->unsigned_suffix = true;
ctok->state = CTokStateIntSuffix;
break;
case 'l':
case 'L':
ctok->long_suffix = true;
ctok->state = CTokStateIntSuffixLong;
break;
case '.':
buf_append_char(&ctok->buf, '.');
ctok->cur_tok->id = CTokIdNumLitFloat;
ctok->state = CTokStateFloat;
break;
default:
c -= 1;
end_token(ctok);
ctok->state = CTokStateStart;
continue;
}
break;
case CTokStateIntSuffix:
switch (*c) {
case 'l':
case 'L':
if (ctok->long_suffix) {
return mark_error(ctok);
}
ctok->long_suffix = true;
ctok->state = CTokStateIntSuffixLong;
break;
case 'u':
case 'U':
if (ctok->unsigned_suffix) {
return mark_error(ctok);
}
ctok->unsigned_suffix = true;
break;
default:
c -= 1;
end_token(ctok);
ctok->state = CTokStateStart;
continue;
}
break;
case CTokStateIntSuffixLong:
switch (*c) {
case 'l':
case 'L':
ctok->state = CTokStateIntSuffix;
break;
case 'u':
case 'U':
if (ctok->unsigned_suffix) {
return mark_error(ctok);
}
ctok->unsigned_suffix = true;
break;
default:
c -= 1;
end_token(ctok);
ctok->state = CTokStateStart;
continue;
}
break;
case CTokStateGotZero:
switch (*c) {
case 'x':
case 'X':
ctok->state = CTokStateHex;
break;
case '.':
ctok->state = CTokStateFloat;
ctok->cur_tok->id = CTokIdNumLitFloat;
buf_append_char(&ctok->buf, '.');
break;
default:
c -= 1;
ctok->state = CTokStateOctal;
continue;
}
break;
case CTokStateOctal:
switch (*c) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
// TODO @mul_with_overflow
ctok->cur_tok->data.num_lit_int *= 8;
// TODO @add_with_overflow
ctok->cur_tok->data.num_lit_int += *c - '0';
break;
case '8':
case '9':
return mark_error(ctok);
case '\'':
break;
default:
c -= 1;
end_token(ctok);
ctok->state = CTokStateStart;
continue;
}
break;
case CTokStateHex:
switch (*c) {
case '0':
hex_digit(ctok, 0);
break;
case '1':
hex_digit(ctok, 1);
break;
case '2':
hex_digit(ctok, 2);
break;
case '3':
hex_digit(ctok, 3);
break;
case '4':
hex_digit(ctok, 4);
break;
case '5':
hex_digit(ctok, 5);
break;
case '6':
hex_digit(ctok, 6);
break;
case '7':
hex_digit(ctok, 7);
break;
case '8':
hex_digit(ctok, 8);
break;
case '9':
hex_digit(ctok, 9);
break;
case 'a':
case 'A':
hex_digit(ctok, 10);
break;
case 'b':
case 'B':
hex_digit(ctok, 11);
break;
case 'c':
case 'C':
hex_digit(ctok, 12);
break;
case 'd':
case 'D':
hex_digit(ctok, 13);
break;
case 'e':
case 'E':
hex_digit(ctok, 14);
break;
case 'f':
case 'F':
hex_digit(ctok, 15);
break;
case 'p':
case 'P':
ctok->cur_tok->id = CTokIdNumLitFloat;
ctok->state = CTokStateExpSign;
break;
default:
c -= 1;
end_token(ctok);
ctok->state = CTokStateStart;
continue;
}
break;
case CTokStateIdentifier:
switch (*c) {
case IDENT:
buf_append_char(&ctok->cur_tok->data.symbol, *c);
break;
default:
c -= 1;
end_token(ctok);
ctok->state = CTokStateStart;
continue;
}
break;
case CTokStateString:
switch (*c) {
case '\\':
ctok->state = CTokStateCharEscape;
break;
case '\"':
end_token(ctok);
ctok->state = CTokStateStart;
break;
default:
buf_append_char(&ctok->cur_tok->data.str_lit, *c);
}
break;
case CTokStateExpectChar:
switch (*c) {
case '\\':
ctok->state = CTokStateCharEscape;
break;
case '\'':
return mark_error(ctok);
default:
ctok->cur_tok->data.char_lit = *c;
ctok->state = CTokStateExpectEndQuot;
}
break;
case CTokStateCharEscape:
switch (*c) {
case '\'':
case '"':
case '?':
case '\\':
add_char(ctok, *c);
break;
case 'a':
add_char(ctok, '\a');
break;
case 'b':
add_char(ctok, '\b');
break;
case 'f':
add_char(ctok, '\f');
break;
case 'n':
add_char(ctok, '\n');
break;
case 'r':
add_char(ctok, '\r');
break;
case 't':
add_char(ctok, '\t');
break;
case 'v':
add_char(ctok, '\v');
break;
case DIGIT:
zig_panic("TODO octal");
break;
case 'x':
zig_panic("TODO hex");
break;
case 'u':
zig_panic("TODO unicode");
break;
case 'U':
zig_panic("TODO Unicode");
break;
default:
return mark_error(ctok);
}
break;
case CTokStateExpectEndQuot:
switch (*c) {
case '\'':
end_token(ctok);
ctok->state = CTokStateStart;
break;
default:
return mark_error(ctok);
}
break;
case CTokStateOpenComment:
switch (*c) {
case '/':
ctok->state = CTokStateLineComment;
break;
case '*':
ctok->state = CTokStateComment;
break;
default:
return mark_error(ctok);
}
break;
case CTokStateLineComment:
if (*c == '\n') {
ctok->state = CTokStateStart;
goto found_end_of_macro;
}
break;
case CTokStateComment:
switch (*c) {
case '*':
ctok->state = CTokStateCommentStar;
break;
default:
break;
}
break;
case CTokStateCommentStar:
switch (*c) {
case '/':
ctok->state = CTokStateStart;
break;
case '*':
break;
default:
ctok->state = CTokStateComment;
break;
}
break;
case CTokStateBackslash:
switch (*c) {
case '\n':
ctok->state = CTokStateStart;
break;
default:
return mark_error(ctok);
}
break;
}
}
found_end_of_macro:
switch (ctok->state) {
case CTokStateStart:
break;
case CTokStateIdentifier:
case CTokStateDecimal:
case CTokStateHex:
case CTokStateOctal:
case CTokStateGotZero:
case CTokStateIntSuffix:
case CTokStateIntSuffixLong:
end_token(ctok);
break;
case CTokStateFloat:
case CTokStateFloatExp:
end_float(ctok);
break;
case CTokStateExpectChar:
case CTokStateExpectEndQuot:
case CTokStateOpenComment:
case CTokStateLineComment:
case CTokStateComment:
case CTokStateCommentStar:
case CTokStateCharEscape:
case CTokStateBackslash:
case CTokStateString:
case CTokStateExpSign:
case CTokStateFloatExpFirst:
return mark_error(ctok);
}
assert(ctok->cur_tok == nullptr);
}

70
src/c_tokenizer.hpp Normal file
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@ -0,0 +1,70 @@
/*
* Copyright (c) 2016 Andrew Kelley
*
* This file is part of zig, which is MIT licensed.
* See http://opensource.org/licenses/MIT
*/
#ifndef ZIG_C_TOKENIZER_HPP
#define ZIG_C_TOKENIZER_HPP
#include "buffer.hpp"
enum CTokId {
CTokIdCharLit,
CTokIdStrLit,
CTokIdNumLitInt,
CTokIdNumLitFloat,
CTokIdSymbol,
CTokIdMinus,
};
struct CTok {
enum CTokId id;
union {
uint8_t char_lit;
Buf str_lit;
uint64_t num_lit_int;
double num_lit_float;
Buf symbol;
} data;
};
enum CTokState {
CTokStateStart,
CTokStateExpectChar,
CTokStateCharEscape,
CTokStateExpectEndQuot,
CTokStateOpenComment,
CTokStateLineComment,
CTokStateComment,
CTokStateCommentStar,
CTokStateBackslash,
CTokStateString,
CTokStateIdentifier,
CTokStateDecimal,
CTokStateOctal,
CTokStateGotZero,
CTokStateHex,
CTokStateIntSuffix,
CTokStateIntSuffixLong,
CTokStateFloat,
CTokStateExpSign,
CTokStateFloatExp,
CTokStateFloatExpFirst,
};
struct CTokenize {
ZigList<CTok> tokens;
CTokState state;
bool error;
CTok *cur_tok;
Buf buf;
bool unsigned_suffix;
bool long_suffix;
};
void tokenize_c_macro(CTokenize *ctok, const uint8_t *c);
#endif

284
src/parseh.cpp
View File

@ -12,6 +12,7 @@
#include "parser.hpp"
#include "all_types.hpp"
#include "tokenizer.hpp"
#include "c_tokenizer.hpp"
#include "analyze.hpp"
#include <clang/Frontend/ASTUnit.h>
@ -176,6 +177,19 @@ static AstNode *create_str_lit_node(Context *c, Buf *buf) {
return node;
}
static AstNode *create_num_lit_float(Context *c, double x) {
AstNode *node = create_node(c, NodeTypeNumberLiteral);
node->data.number_literal.kind = NumLitFloat;
node->data.number_literal.data.x_float = x;
return node;
}
static AstNode *create_num_lit_float_negative(Context *c, double x, bool negative) {
AstNode *num_lit_node = create_num_lit_float(c, x);
if (!negative) return num_lit_node;
return create_prefix_node(c, PrefixOpNegation, num_lit_node);
}
static AstNode *create_num_lit_unsigned(Context *c, uint64_t x) {
AstNode *node = create_node(c, NodeTypeNumberLiteral);
node->data.number_literal.kind = NumLitUInt;
@ -183,6 +197,12 @@ static AstNode *create_num_lit_unsigned(Context *c, uint64_t x) {
return node;
}
static AstNode *create_num_lit_unsigned_negative(Context *c, uint64_t x, bool negative) {
AstNode *num_lit_node = create_num_lit_unsigned(c, x);
if (!negative) return num_lit_node;
return create_prefix_node(c, PrefixOpNegation, num_lit_node);
}
static AstNode *create_num_lit_signed(Context *c, int64_t x) {
if (x >= 0) {
return create_num_lit_unsigned(c, x);
@ -1244,209 +1264,70 @@ static void render_macros(Context *c) {
}
}
static int parse_c_char_lit(Buf *value, uint8_t *out_c) {
enum State {
StateExpectStartQuot,
StateExpectChar,
StateExpectEndQuot,
StateExpectEnd,
};
State state = StateExpectStartQuot;
for (int i = 0; i < buf_len(value); i += 1) {
uint8_t c = buf_ptr(value)[i];
switch (state) {
case StateExpectStartQuot:
switch (c) {
case '\'':
state = StateExpectChar;
break;
default:
return -1;
}
break;
case StateExpectChar:
switch (c) {
case '\\':
case '\'':
return -1;
default:
*out_c = c;
state = StateExpectEndQuot;
}
break;
case StateExpectEndQuot:
switch (c) {
case '\'':
state = StateExpectEnd;
break;
default:
return -1;
}
break;
case StateExpectEnd:
return -1;
}
}
return (state == StateExpectEnd) ? 0 : -1;
}
static int parse_c_num_lit_unsigned(Buf *buf, uint64_t *out_val) {
char *temp;
*out_val = strtoull(buf_ptr(buf), &temp, 0);
if (temp == buf_ptr(buf) || *temp != 0 || *out_val == ULLONG_MAX) {
return -1;
}
return 0;
}
static bool is_simple_symbol(Buf *buf) {
bool first = true;
for (int i = 0; i < buf_len(buf); i += 1) {
uint8_t c = buf_ptr(buf)[i];
bool valid_alpha = (c >= 'a' && c <= 'z') ||
(c >= 'A' && c <= 'Z') || c == '_';
bool valid_digit = (c >= '0' && c <= '9');
bool ok = (valid_alpha || (!first && valid_digit));
first = false;
if (!ok) {
return false;
}
}
return true;
}
enum ParseCStrState {
ParseCStrStateExpectQuot,
ParseCStrStateNormal,
ParseCStrStateEscape,
};
static int parse_c_str_lit(Buf *buf, Buf *out_str) {
ParseCStrState state = ParseCStrStateExpectQuot;
buf_resize(out_str, 0);
for (int i = 0; i < buf_len(buf); i += 1) {
uint8_t c = buf_ptr(buf)[i];
switch (state) {
case ParseCStrStateExpectQuot:
if (c == '"') {
state = ParseCStrStateNormal;
} else {
return -1;
}
break;
case ParseCStrStateNormal:
switch (c) {
case '\\':
state = ParseCStrStateEscape;
break;
case '\n':
return -1;
case '"':
return 0;
default:
buf_append_char(out_str, c);
}
break;
case ParseCStrStateEscape:
switch (c) {
case '\'':
buf_append_char(out_str, '\'');
state = ParseCStrStateNormal;
break;
case '"':
buf_append_char(out_str, '"');
state = ParseCStrStateNormal;
break;
case '?':
buf_append_char(out_str, '\?');
state = ParseCStrStateNormal;
break;
case '\\':
buf_append_char(out_str, '\\');
state = ParseCStrStateNormal;
break;
case 'a':
buf_append_char(out_str, '\a');
state = ParseCStrStateNormal;
break;
case 'b':
buf_append_char(out_str, '\b');
state = ParseCStrStateNormal;
break;
case 'f':
buf_append_char(out_str, '\f');
state = ParseCStrStateNormal;
break;
case 'n':
buf_append_char(out_str, '\n');
state = ParseCStrStateNormal;
break;
case 'r':
buf_append_char(out_str, '\r');
state = ParseCStrStateNormal;
break;
case 't':
buf_append_char(out_str, '\t');
state = ParseCStrStateNormal;
break;
case 'v':
buf_append_char(out_str, '\v');
state = ParseCStrStateNormal;
break;
default:
// TODO octal escape sequence, hexadecimal escape sequence, and
// universal character name
return -1;
}
break;
}
}
return -1;
}
static void process_macro(Context *c, Buf *name, Buf *value) {
//fprintf(stderr, "macro '%s' = '%s'\n", buf_ptr(name), buf_ptr(value));
static void process_macro(Context *c, CTokenize *ctok, Buf *name, const char *char_ptr) {
if (is_zig_keyword(name)) {
return;
}
// maybe it's a character literal
uint8_t ch;
if (!parse_c_char_lit(value, &ch)) {
AstNode *var_node = create_var_decl_node(c, buf_ptr(name), create_char_lit_node(c, ch));
c->macro_table.put(name, var_node);
return;
}
// maybe it's a string literal
Buf str_lit = BUF_INIT;
if (!parse_c_str_lit(value, &str_lit)) {
AstNode *var_node = create_var_decl_node(c, buf_ptr(name), create_str_lit_node(c, &str_lit));
c->macro_table.put(name, var_node);
tokenize_c_macro(ctok, (const uint8_t *)char_ptr);
if (ctok->error) {
return;
}
// maybe it's an unsigned integer
uint64_t uint;
if (!parse_c_num_lit_unsigned(value, &uint)) {
AstNode *var_node = create_var_decl_node(c, buf_ptr(name), create_num_lit_unsigned(c, uint));
c->macro_table.put(name, var_node);
return;
}
// maybe it's a symbol
if (is_simple_symbol(value)) {
// if it equals itself, ignore. for example, from stdio.h:
// #define stdin stdin
if (buf_eql_buf(name, value)) {
return;
bool negate = false;
for (int i = 0; i < ctok->tokens.length; i += 1) {
bool is_first = (i == 0);
bool is_last = (i == ctok->tokens.length - 1);
CTok *tok = &ctok->tokens.at(i);
switch (tok->id) {
case CTokIdCharLit:
if (is_last && is_first) {
AstNode *var_node = create_var_decl_node(c, buf_ptr(name),
create_char_lit_node(c, tok->data.char_lit));
c->macro_table.put(name, var_node);
}
return;
case CTokIdStrLit:
if (is_last && is_first) {
AstNode *var_node = create_var_decl_node(c, buf_ptr(name),
create_str_lit_node(c, &tok->data.str_lit));
c->macro_table.put(name, var_node);
}
return;
case CTokIdNumLitInt:
if (is_last) {
AstNode *var_node = create_var_decl_node(c, buf_ptr(name),
create_num_lit_unsigned_negative(c, tok->data.num_lit_int, negate));
c->macro_table.put(name, var_node);
}
return;
case CTokIdNumLitFloat:
if (is_last) {
AstNode *var_node = create_var_decl_node(c, buf_ptr(name),
create_num_lit_float_negative(c, tok->data.num_lit_float, negate));
c->macro_table.put(name, var_node);
}
return;
case CTokIdSymbol:
if (is_last && is_first) {
// if it equals itself, ignore. for example, from stdio.h:
// #define stdin stdin
Buf *symbol_name = buf_create_from_buf(&tok->data.symbol);
if (buf_eql_buf(name, symbol_name)) {
return;
}
c->macro_symbols.append({name, symbol_name});
return;
}
case CTokIdMinus:
if (is_first) {
negate = true;
break;
} else {
return;
}
}
c->macro_symbols.append({name, value});
}
}
@ -1473,6 +1354,8 @@ static void process_symbol_macros(Context *c) {
}
static void process_preprocessor_entities(Context *c, ASTUnit &unit) {
CTokenize ctok = {{0}};
for (PreprocessedEntity *entity : unit.getLocalPreprocessingEntities()) {
switch (entity->getKind()) {
case PreprocessedEntity::InvalidKind:
@ -1494,16 +1377,7 @@ static void process_preprocessor_entities(Context *c, ASTUnit &unit) {
}
const char *end_c = c->source_manager->getCharacterData(end_loc);
Buf *value = buf_alloc();
while (*end_c && *end_c != '\n') {
buf_append_char(value, *end_c);
if (end_c[0] == '\\' && end_c[1] == '\n') {
end_c += 2;
} else {
end_c += 1;
}
}
process_macro(c, buf_create_from_str(name), value);
process_macro(c, &ctok, buf_create_from_str(name), end_c);
}
}
}

4
test/run_tests.cpp
View File

@ -1390,6 +1390,10 @@ extern void (*fn_ptr)(void);
add_parseh_case("__cdecl doesn't mess up function pointers", R"SOURCE(
void foo(void (__cdecl *fn_ptr)(void));
)SOURCE", 1, "pub extern fn foo(fn_ptr: ?extern fn());");
add_parseh_case("comment after integer literal", R"SOURCE(
#define SDL_INIT_VIDEO 0x00000020 /**< SDL_INIT_VIDEO implies SDL_INIT_EVENTS */
)SOURCE", 1, "pub const SDL_INIT_VIDEO = 32;");
}
static void run_self_hosted_test(void) {