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Support C-Style enum in preproc (#1984)

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* [preproc] C-style enums

- asm files parseable from stdin
- 2nd preproc pass
- add parser for C-style `enum`
- positional arguments at end of command

---------

Co-authored-by: sbird <sbird@no.tld>
Co-authored-by: Martin Griffin <martinrgriffin@gmail.com>
This commit is contained in:
Philipp AUER
2024-07-13 19:26:33 +02:00
committed by GitHub
parent a0a02f9733
commit 550e6688aa
9 changed files with 339 additions and 103 deletions
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48
tools/preproc/c_file.cpp
View File

@@ -30,56 +30,16 @@
#include "char_util.h"
#include "utf8.h"
#include "string_parser.h"
#include "io.h"
CFile::CFile(const char * filenameCStr, bool isStdin)
{
FILE *fp;
if (isStdin) {
fp = stdin;
if (isStdin)
m_filename = std::string{"<stdin>/"}.append(filenameCStr);
} else {
fp = std::fopen(filenameCStr, "rb");
else
m_filename = std::string(filenameCStr);
}
std::string& filename = m_filename;
if (fp == NULL)
FATAL_ERROR("Failed to open \"%s\" for reading.\n", filename.c_str());
m_size = 0;
m_buffer = (char *)malloc(CHUNK_SIZE + 1);
if (m_buffer == NULL) {
FATAL_ERROR("Failed to allocate memory to process file \"%s\"!", filename.c_str());
}
std::size_t numAllocatedBytes = CHUNK_SIZE + 1;
std::size_t bufferOffset = 0;
std::size_t count;
while ((count = std::fread(m_buffer + bufferOffset, 1, CHUNK_SIZE, fp)) != 0) {
if (!std::ferror(fp)) {
m_size += count;
if (std::feof(fp)) {
break;
}
numAllocatedBytes += CHUNK_SIZE;
bufferOffset += CHUNK_SIZE;
m_buffer = (char *)realloc(m_buffer, numAllocatedBytes);
if (m_buffer == NULL) {
FATAL_ERROR("Failed to allocate memory to process file \"%s\"!", filename.c_str());
}
} else {
FATAL_ERROR("Failed to read \"%s\". (error: %s)", filename.c_str(), std::strerror(errno));
}
}
m_buffer[m_size] = 0;
std::fclose(fp);
m_buffer = ReadFileToBuffer(filenameCStr, isStdin, &m_size);
m_pos = 0;
m_lineNum = 1;