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Diffstat (limited to 'tools/src/preproc/charmap.cpp')
-rw-r--r--[-rwxr-xr-x]tools/src/preproc/charmap.cpp206
1 files changed, 73 insertions, 133 deletions
diff --git a/tools/src/preproc/charmap.cpp b/tools/src/preproc/charmap.cpp
index 45a6b50a..d86eb755 100755..100644
--- a/tools/src/preproc/charmap.cpp
+++ b/tools/src/preproc/charmap.cpp
@@ -26,24 +26,16 @@
#include "char_util.h"
#include "utf8.h"
-enum LhsType
-{
- Char,
- Escape,
- Constant,
- None
-};
+enum LhsType { Char, Escape, Constant, None };
-struct Lhs
-{
+struct Lhs {
LhsType type;
std::string name;
std::int32_t code;
};
-class CharmapReader
-{
-public:
+class CharmapReader {
+ public:
CharmapReader(std::string filename);
CharmapReader(const CharmapReader&) = delete;
~CharmapReader();
@@ -53,7 +45,7 @@ public:
void ExpectEmptyRestOfLine();
void RaiseError(const char* format, ...);
-private:
+ private:
char* m_buffer;
long m_pos;
long m_size;
@@ -65,17 +57,15 @@ private:
void SkipWhitespace();
};
-CharmapReader::CharmapReader(std::string filename) : m_filename(filename)
-{
- if (filename == "")
- {
+CharmapReader::CharmapReader(std::string filename) : m_filename(filename) {
+ if (filename == "") {
m_pos = 0;
m_size = 0;
- m_buffer = new char[1] {};
+ m_buffer = new char[1]{};
return;
}
- FILE *fp = std::fopen(filename.c_str(), "rb");
+ FILE* fp = std::fopen(filename.c_str(), "rb");
if (fp == NULL)
FATAL_ERROR("Failed to open \"%s\" for reading.\n", filename.c_str());
@@ -104,45 +94,36 @@ CharmapReader::CharmapReader(std::string filename) : m_filename(filename)
RemoveComments();
}
-CharmapReader::~CharmapReader()
-{
+CharmapReader::~CharmapReader() {
delete[] m_buffer;
}
-Lhs CharmapReader::ReadLhs()
-{
+Lhs CharmapReader::ReadLhs() {
Lhs lhs;
- for (;;)
- {
+ for (;;) {
SkipWhitespace();
- if (m_buffer[m_pos] == '\n')
- {
+ if (m_buffer[m_pos] == '\n') {
m_pos++;
m_lineNum++;
- }
- else
- {
+ } else {
break;
}
}
-
- if (m_buffer[m_pos] == '\'')
- {
+
+ if (m_buffer[m_pos] == '\'') {
m_pos++;
bool isEscape = (m_buffer[m_pos] == '\\');
- if (isEscape)
- {
+ if (isEscape) {
m_pos++;
}
unsigned char c = m_buffer[m_pos];
- if (c == 0)
- {
+ if (c == 0) {
if (m_pos >= m_size)
RaiseError("unexpected EOF in UTF-8 character literal");
else
@@ -167,58 +148,45 @@ Lhs CharmapReader::ReadLhs()
lhs.code = code;
- if (isEscape)
- {
+ if (isEscape) {
if (code >= 128)
RaiseError("escapes using non-ASCII characters are invalid");
- switch (code)
- {
- case '\'':
- lhs.type = LhsType::Char;
- break;
- case '\\':
- lhs.type = LhsType::Char;
- case '"':
- RaiseError("cannot escape double quote");
- break;
- default:
- lhs.type = LhsType::Escape;
+ switch (code) {
+ case '\'':
+ lhs.type = LhsType::Char;
+ break;
+ case '\\':
+ lhs.type = LhsType::Char;
+ case '"':
+ RaiseError("cannot escape double quote");
+ break;
+ default:
+ lhs.type = LhsType::Escape;
}
- }
- else
- {
+ } else {
if (code == '\'')
RaiseError("empty character literal");
lhs.type = LhsType::Char;
}
- }
- else if (IsIdentifierStartingChar(m_buffer[m_pos]))
- {
+ } else if (IsIdentifierStartingChar(m_buffer[m_pos])) {
lhs.type = LhsType::Constant;
lhs.name = ReadConstant();
- }
- else if (m_buffer[m_pos] == '\r')
- {
+ } else if (m_buffer[m_pos] == '\r') {
RaiseError("only Unix-style LF newlines are supported");
- }
- else if (m_buffer[m_pos] == 0)
- {
+ } else if (m_buffer[m_pos] == 0) {
if (m_pos < m_size)
RaiseError("unexpected null character");
lhs.type = LhsType::None;
- }
- else
- {
+ } else {
RaiseError("junk at start of line");
}
return lhs;
}
-void CharmapReader::ExpectEqualsSign()
-{
+void CharmapReader::ExpectEqualsSign() {
SkipWhitespace();
if (m_buffer[m_pos] != '=')
@@ -227,8 +195,7 @@ void CharmapReader::ExpectEqualsSign()
m_pos++;
}
-static unsigned int ConvertHexDigit(char c)
-{
+static unsigned int ConvertHexDigit(char c) {
unsigned int digit = 0;
if (c >= '0' && c <= '9')
@@ -241,16 +208,14 @@ static unsigned int ConvertHexDigit(char c)
return digit;
}
-std::string CharmapReader::ReadSequence()
-{
+std::string CharmapReader::ReadSequence() {
SkipWhitespace();
long startPos = m_pos;
unsigned int length = 0;
- while (IsAsciiHexDigit(m_buffer[m_pos]) && IsAsciiHexDigit(m_buffer[m_pos + 1]))
- {
+ while (IsAsciiHexDigit(m_buffer[m_pos]) && IsAsciiHexDigit(m_buffer[m_pos + 1])) {
m_pos += 2;
length++;
@@ -271,8 +236,7 @@ std::string CharmapReader::ReadSequence()
m_pos = startPos;
- for (unsigned int i = 0; i < length; i++)
- {
+ for (unsigned int i = 0; i < length; i++) {
unsigned int digit1 = ConvertHexDigit(m_buffer[m_pos]);
unsigned int digit2 = ConvertHexDigit(m_buffer[m_pos + 1]);
unsigned char byte = digit1 * 16 + digit2;
@@ -285,32 +249,23 @@ std::string CharmapReader::ReadSequence()
return sequence;
}
-void CharmapReader::ExpectEmptyRestOfLine()
-{
+void CharmapReader::ExpectEmptyRestOfLine() {
SkipWhitespace();
- if (m_buffer[m_pos] == 0)
- {
+ if (m_buffer[m_pos] == 0) {
if (m_pos < m_size)
RaiseError("unexpected null character");
- }
- else if (m_buffer[m_pos] == '\n')
- {
+ } else if (m_buffer[m_pos] == '\n') {
m_pos++;
m_lineNum++;
- }
- else if (m_buffer[m_pos] == '\r')
- {
+ } else if (m_buffer[m_pos] == '\r') {
RaiseError("only Unix-style LF newlines are supported");
- }
- else
- {
+ } else {
RaiseError("junk at end of line");
}
}
-void CharmapReader::RaiseError(const char* format, ...)
-{
+void CharmapReader::RaiseError(const char* format, ...) {
const int bufferSize = 1024;
char buffer[bufferSize];
@@ -324,36 +279,26 @@ void CharmapReader::RaiseError(const char* format, ...)
std::exit(1);
}
-void CharmapReader::RemoveComments()
-{
+void CharmapReader::RemoveComments() {
long pos = 0;
bool inString = false;
- for (;;)
- {
+ for (;;) {
if (m_buffer[pos] == 0)
return;
- if (inString)
- {
- if (m_buffer[pos] == '\\' && m_buffer[pos + 1] == '\'')
- {
+ if (inString) {
+ if (m_buffer[pos] == '\\' && m_buffer[pos + 1] == '\'') {
pos += 2;
- }
- else
- {
+ } else {
if (m_buffer[pos] == '\'')
inString = false;
pos++;
}
- }
- else if (m_buffer[pos] == '@')
- {
+ } else if (m_buffer[pos] == '@') {
while (m_buffer[pos] != '\n' && m_buffer[pos] != 0)
m_buffer[pos++] = ' ';
- }
- else
- {
+ } else {
if (m_buffer[pos] == '\'')
inString = true;
pos++;
@@ -361,8 +306,7 @@ void CharmapReader::RemoveComments()
}
}
-std::string CharmapReader::ReadConstant()
-{
+std::string CharmapReader::ReadConstant() {
long startPos = m_pos;
while (IsIdentifierChar(m_buffer[m_pos]))
@@ -371,18 +315,15 @@ std::string CharmapReader::ReadConstant()
return std::string(&m_buffer[startPos], m_pos - startPos);
}
-void CharmapReader::SkipWhitespace()
-{
+void CharmapReader::SkipWhitespace() {
while (m_buffer[m_pos] == '\t' || m_buffer[m_pos] == ' ')
m_pos++;
}
-Charmap::Charmap(std::string filename)
-{
+Charmap::Charmap(std::string filename) {
CharmapReader reader(filename);
- for (;;)
- {
+ for (;;) {
Lhs lhs = reader.ReadLhs();
if (lhs.type == LhsType::None)
@@ -392,23 +333,22 @@ Charmap::Charmap(std::string filename)
std::string sequence = reader.ReadSequence();
- switch (lhs.type)
- {
- case LhsType::Char:
- if (m_chars.find(lhs.code) != m_chars.end())
- reader.RaiseError("redefining char");
- m_chars[lhs.code] = sequence;
- break;
- case LhsType::Escape:
- if (m_escapes[lhs.code].length() != 0)
- reader.RaiseError("redefining escape");
- m_escapes[lhs.code] = sequence;
- break;
- case LhsType::Constant:
- if (m_constants.find(lhs.name) != m_constants.end())
- reader.RaiseError("redefining constant");
- m_constants[lhs.name] = sequence;
- break;
+ switch (lhs.type) {
+ case LhsType::Char:
+ if (m_chars.find(lhs.code) != m_chars.end())
+ reader.RaiseError("redefining char");
+ m_chars[lhs.code] = sequence;
+ break;
+ case LhsType::Escape:
+ if (m_escapes[lhs.code].length() != 0)
+ reader.RaiseError("redefining escape");
+ m_escapes[lhs.code] = sequence;
+ break;
+ case LhsType::Constant:
+ if (m_constants.find(lhs.name) != m_constants.end())
+ reader.RaiseError("redefining constant");
+ m_constants[lhs.name] = sequence;
+ break;
}
reader.ExpectEmptyRestOfLine();
generated by cgit v1.2.3 (git 2.25.1) at 2026-08-03 06:50:23 +0000