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path: root/tools/src/preproc/string_parser.cpp
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Diffstat (limited to 'tools/src/preproc/string_parser.cpp')
-rw-r--r--[-rwxr-xr-x]tools/src/preproc/string_parser.cpp165
1 files changed, 62 insertions, 103 deletions
diff --git a/tools/src/preproc/string_parser.cpp b/tools/src/preproc/string_parser.cpp
index dd5196a4..7c3cc1c7 100755..100644
--- a/tools/src/preproc/string_parser.cpp
+++ b/tools/src/preproc/string_parser.cpp
@@ -27,27 +27,22 @@
#include "utf8.h"
// Reads a charmap char or escape sequence.
-std::string StringParser::ReadCharOrEscape()
-{
+std::string StringParser::ReadCharOrEscape() {
std::string sequence;
bool isEscape = (m_buffer[m_pos] == '\\');
- if (isEscape)
- {
+ if (isEscape) {
m_pos++;
- if (m_buffer[m_pos] == '"')
- {
+ if (m_buffer[m_pos] == '"') {
sequence = g_charmap->Char('"');
if (sequence.length() == 0)
RaiseError("no mapping exists for double quote");
return sequence;
- }
- else if (m_buffer[m_pos] == '\\')
- {
+ } else if (m_buffer[m_pos] == '\\') {
sequence = g_charmap->Char('\\');
if (sequence.length() == 0)
@@ -59,8 +54,7 @@ std::string StringParser::ReadCharOrEscape()
unsigned char c = m_buffer[m_pos];
- if (c == 0)
- {
+ if (c == 0) {
if (m_pos >= m_size)
RaiseError("unexpected EOF in UTF-8 string");
else
@@ -82,8 +76,7 @@ std::string StringParser::ReadCharOrEscape()
sequence = isEscape ? g_charmap->Escape(code) : g_charmap->Char(code);
- if (sequence.length() == 0)
- {
+ if (sequence.length() == 0) {
if (isEscape)
RaiseError("unknown escape '\\%c'", code);
else
@@ -94,18 +87,15 @@ std::string StringParser::ReadCharOrEscape()
}
// Reads a charmap constant, i.e. "{FOO}".
-std::string StringParser::ReadBracketedConstants()
-{
+std::string StringParser::ReadBracketedConstants() {
std::string totalSequence;
m_pos++; // Assume we're on the left curly bracket.
- while (m_buffer[m_pos] != '}')
- {
+ while (m_buffer[m_pos] != '}') {
SkipWhitespace();
- if (IsIdentifierStartingChar(m_buffer[m_pos]))
- {
+ if (IsIdentifierStartingChar(m_buffer[m_pos])) {
long startPos = m_pos;
m_pos++;
@@ -115,44 +105,36 @@ std::string StringParser::ReadBracketedConstants()
std::string sequence = g_charmap->Constant(std::string(&m_buffer[startPos], m_pos - startPos));
- if (sequence.length() == 0)
- {
+ if (sequence.length() == 0) {
m_buffer[m_pos] = 0;
RaiseError("unknown constant '%s'", &m_buffer[startPos]);
}
totalSequence += sequence;
- }
- else if (IsAsciiDigit(m_buffer[m_pos]))
- {
+ } else if (IsAsciiDigit(m_buffer[m_pos])) {
Integer integer = ReadInteger();
- switch (integer.size)
- {
- case 1:
- totalSequence += (unsigned char)integer.value;
- break;
- case 2:
- totalSequence += (unsigned char)integer.value;
- totalSequence += (unsigned char)(integer.value >> 8);
- break;
- case 4:
- totalSequence += (unsigned char)integer.value;
- totalSequence += (unsigned char)(integer.value >> 8);
- totalSequence += (unsigned char)(integer.value >> 16);
- totalSequence += (unsigned char)(integer.value >> 24);
- break;
+ switch (integer.size) {
+ case 1:
+ totalSequence += (unsigned char)integer.value;
+ break;
+ case 2:
+ totalSequence += (unsigned char)integer.value;
+ totalSequence += (unsigned char)(integer.value >> 8);
+ break;
+ case 4:
+ totalSequence += (unsigned char)integer.value;
+ totalSequence += (unsigned char)(integer.value >> 8);
+ totalSequence += (unsigned char)(integer.value >> 16);
+ totalSequence += (unsigned char)(integer.value >> 24);
+ break;
}
- }
- else if (m_buffer[m_pos] == 0)
- {
+ } else if (m_buffer[m_pos] == 0) {
if (m_pos >= m_size)
RaiseError("unexpected EOF after left curly bracket");
else
RaiseError("unexpected null character within curly brackets");
- }
- else
- {
+ } else {
if (IsAsciiPrintable(m_buffer[m_pos]))
RaiseError("unexpected character '%c' within curly brackets", m_buffer[m_pos]);
else
@@ -166,8 +148,7 @@ std::string StringParser::ReadBracketedConstants()
}
// Reads a charmap string.
-int StringParser::ParseString(long srcPos, unsigned char* dest, int& destLength)
-{
+int StringParser::ParseString(long srcPos, unsigned char* dest, int& destLength) {
m_pos = srcPos;
if (m_buffer[m_pos] != '"')
@@ -179,12 +160,10 @@ int StringParser::ParseString(long srcPos, unsigned char* dest, int& destLength)
destLength = 0;
- while (m_buffer[m_pos] != '"')
- {
+ while (m_buffer[m_pos] != '"') {
std::string sequence = (m_buffer[m_pos] == '{') ? ReadBracketedConstants() : ReadCharOrEscape();
- for (const char& c : sequence)
- {
+ for (const char& c : sequence) {
if (destLength == kMaxStringLength)
RaiseError("mapped string longer than %d bytes", kMaxStringLength);
@@ -197,8 +176,7 @@ int StringParser::ParseString(long srcPos, unsigned char* dest, int& destLength)
return m_pos - start;
}
-void StringParser::RaiseError(const char* format, ...)
-{
+void StringParser::RaiseError(const char* format, ...) {
const int bufferSize = 1024;
char buffer[bufferSize];
@@ -211,8 +189,7 @@ void StringParser::RaiseError(const char* format, ...)
}
// Converts digit character to numerical value.
-static int ConvertDigit(char c, int radix)
-{
+static int ConvertDigit(char c, int radix) {
int digit;
if (c >= '0' && c <= '9')
@@ -227,26 +204,22 @@ static int ConvertDigit(char c, int radix)
return (digit < radix) ? digit : -1;
}
-void StringParser::SkipRestOfInteger(int radix)
-{
+void StringParser::SkipRestOfInteger(int radix) {
while (ConvertDigit(m_buffer[m_pos], radix) != -1)
m_pos++;
}
-StringParser::Integer StringParser::ReadDecimal()
-{
+StringParser::Integer StringParser::ReadDecimal() {
const int radix = 10;
std::uint64_t n = 0;
int digit;
std::uint64_t max = UINT32_MAX;
long startPos = m_pos;
- while ((digit = ConvertDigit(m_buffer[m_pos], radix)) != -1)
- {
+ while ((digit = ConvertDigit(m_buffer[m_pos], radix)) != -1) {
n = n * radix + digit;
- if (n >= max)
- {
+ if (n >= max) {
SkipRestOfInteger(radix);
std::string intLiteral(m_buffer + startPos, m_pos - startPos);
@@ -258,23 +231,17 @@ StringParser::Integer StringParser::ReadDecimal()
int size;
- if (m_buffer[m_pos] == 'H')
- {
- if (n >= 0x10000)
- {
+ if (m_buffer[m_pos] == 'H') {
+ if (n >= 0x10000) {
RaiseError("%lu is too large to be a halfword", (unsigned long)n);
}
size = 2;
m_pos++;
- }
- else if (m_buffer[m_pos] == 'W')
- {
+ } else if (m_buffer[m_pos] == 'W') {
size = 4;
m_pos++;
- }
- else
- {
+ } else {
if (n >= 0x10000)
size = 4;
else if (n >= 0x100)
@@ -283,23 +250,20 @@ StringParser::Integer StringParser::ReadDecimal()
size = 1;
}
- return{ static_cast<std::uint32_t>(n), size };
+ return { static_cast<std::uint32_t>(n), size };
}
-StringParser::Integer StringParser::ReadHex()
-{
+StringParser::Integer StringParser::ReadHex() {
const int radix = 16;
std::uint64_t n = 0;
int digit;
std::uint64_t max = UINT32_MAX;
long startPos = m_pos;
- while ((digit = ConvertDigit(m_buffer[m_pos], radix)) != -1)
- {
+ while ((digit = ConvertDigit(m_buffer[m_pos], radix)) != -1) {
n = n * radix + digit;
- if (n >= max)
- {
+ if (n >= max) {
SkipRestOfInteger(radix);
std::string intLiteral(m_buffer + startPos, m_pos - startPos);
@@ -312,34 +276,30 @@ StringParser::Integer StringParser::ReadHex()
int length = m_pos - startPos;
int size = 0;
- switch (length)
- {
- case 2:
- size = 1;
- break;
- case 4:
- size = 2;
- break;
- case 8:
- size = 4;
- break;
- default:
- {
- std::string intLiteral(m_buffer + startPos, m_pos - startPos);
- RaiseError("hex integer literal \"0x%s\" doesn't have length of 2, 4, or 8 digits", intLiteral.c_str());
- }
+ switch (length) {
+ case 2:
+ size = 1;
+ break;
+ case 4:
+ size = 2;
+ break;
+ case 8:
+ size = 4;
+ break;
+ default: {
+ std::string intLiteral(m_buffer + startPos, m_pos - startPos);
+ RaiseError("hex integer literal \"0x%s\" doesn't have length of 2, 4, or 8 digits", intLiteral.c_str());
+ }
}
- return{ static_cast<std::uint32_t>(n), size };
+ return { static_cast<std::uint32_t>(n), size };
}
-StringParser::Integer StringParser::ReadInteger()
-{
+StringParser::Integer StringParser::ReadInteger() {
if (!IsAsciiDigit(m_buffer[m_pos]))
RaiseError("expected integer");
- if (m_buffer[m_pos] == '0' && m_buffer[m_pos + 1] == 'x')
- {
+ if (m_buffer[m_pos] == '0' && m_buffer[m_pos + 1] == 'x') {
m_pos += 2;
return ReadHex();
}
@@ -348,8 +308,7 @@ StringParser::Integer StringParser::ReadInteger()
}
// Skips tabs and spaces.
-void StringParser::SkipWhitespace()
-{
+void StringParser::SkipWhitespace() {
while (m_buffer[m_pos] == '\t' || m_buffer[m_pos] == ' ')
m_pos++;
}
generated by cgit v1.2.3 (git 2.25.1) at 2026-08-03 10:57:08 +0000