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//===-- gen/cpp-imitating-naming.d --------------------------------*- D -*-===//
//
// LDC – the LLVM D compiler
//
// This file is distributed under the BSD-style LDC license. See the LICENSE
// file for details.
//
//===----------------------------------------------------------------------===//
module gen.cpp_imitating_naming;
private string dTemplateToCPlusPlus(const(string) name) @safe pure
{
import std.string : indexOf, indexOfAny;
ptrdiff_t start = 0;
ptrdiff_t index = name.indexOf('!');
string result;
if (index != -1)
{
result ~= name[start .. index];
result ~= '<';
start = index + 1;
if (name[index + 1] == '(')
{
start++;
index++;
size_t enclosedParentheses = 0;
while (true)
{
switch (name[index])
{
case '(':
enclosedParentheses++;
break;
case ')':
enclosedParentheses--;
break;
default:
break;
}
if (enclosedParentheses == 0)
break;
if (index == cast(ptrdiff_t) name.length - 1)
break;
index++;
}
if (name[index] != ')')
index++;
}
else
{
index = name.indexOfAny(" ,.:<>()[]", start);
if (index == -1)
index = name.length;
}
result ~= name[start .. index];
result ~= '>';
start = index;
if (start != name.length && name[start] == ')')
start++;
}
if (start != name.length)
result ~= name[start .. $];
return result;
}
private string dArrayToCPlusPlus(const(string) name) @safe pure
{
import std.ascii : isDigit;
import std.string : indexOf, lastIndexOfAny, replace;
ptrdiff_t index = name.indexOf('[');
while (index != -1 && name[index + 1].isDigit)
index = name.indexOf('[', index + 1);
string result = name;
if (index > 0)
{
index--;
if (name[index] == '>' || name[index] == ')')
{
size_t enclosedParentheses = 0;
size_t enclosedChevrons = 0;
while (true)
{
switch (name[index])
{
case '(':
enclosedParentheses++;
break;
case ')':
enclosedParentheses--;
break;
case '>':
enclosedChevrons++;
break;
case '<':
enclosedChevrons--;
break;
default:
break;
}
if (enclosedParentheses == 0 && enclosedChevrons == 0)
break;
if (index == 0)
break;
index--;
}
}
if (index > 0)
{
index = name.lastIndexOfAny(" ,<(", index - 1);
index = index != -1 ? index + 1 : 0;
}
ptrdiff_t bracketsStart = name.indexOf('[', index);
ptrdiff_t bracketsIndex = bracketsStart;
size_t enclosedSquareBrackets = 0;
while (true)
{
switch (name[bracketsIndex])
{
case '[':
enclosedSquareBrackets++;
break;
case ']':
enclosedSquareBrackets--;
break;
default:
break;
}
if (enclosedSquareBrackets == 0)
break;
if (bracketsIndex == cast(ptrdiff_t) name.length - 1)
break;
bracketsIndex++;
}
bracketsIndex++;
immutable string search = name[index .. bracketsIndex];
immutable string value = name[index .. bracketsStart];
if (name[bracketsIndex - 1] == ']')
bracketsIndex--;
bracketsStart++;
immutable string key = name[bracketsStart .. bracketsIndex];
if (key.length == 0)
{
immutable string replaceString = "slice<" ~ value ~ ">";
result = name.replace(search, replaceString);
}
else
{
immutable string pairKeyValue = key ~ ", " ~ value;
immutable string replaceString = "associative_array<" ~ pairKeyValue ~ ">";
result = name.replace(search, replaceString);
}
}
return result;
}
private string convertDToCPlusPlus(alias identifierModifier)(const(string) name) @safe pure
{
string result = name;
string previousResult;
do
{
previousResult = result;
result = identifierModifier(result);
}
while (result != previousResult);
return result;
}
///
string convertDIdentifierToCPlusPlus(const(string) name) @safe pure
{
import std.string : replace;
string result = name.replace(".", "::");
result = result.convertDToCPlusPlus!dTemplateToCPlusPlus;
result = result.convertDToCPlusPlus!dArrayToCPlusPlus;
return result;
}
///
extern (C++, ldc)
const(char)* convertDIdentifierToCPlusPlus(const(char)* name, size_t nameLength) @trusted pure
{
import std.exception : assumeUnique;
import std.string : toStringz;
return name[0 .. nameLength].assumeUnique.convertDIdentifierToCPlusPlus.toStringz;
}
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