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implement $$byte, $$word, $$long, $$bitfield

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This commit is contained in:
Wolfgang Thaller
2014-10-14 00:11:21 +02:00
parent 959846f093
commit c93cb8feae
6 changed files with 81 additions and 11 deletions
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Rez/ResourceCompiler.cc
+35 -1
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@@ -41,6 +41,37 @@ void ResourceCompiler::write(int nBits, int value)
//currentOffset += nBits;
}
int ResourceCompiler::peek(int bitPos, int size)
{
int bytePos = bitPos / 8;
int endBytePos = (bitPos + size - 1) / 8 + 1;
unsigned bitPosInByte = bitPos % 8;
unsigned outPos = 32 - size;
unsigned val = 0;
for(int i = bytePos; i != endBytePos; ++i)
{
unsigned byte;
if(i < data.size())
byte = data[i];
else if(i < prePassData.size())
byte = prePassData[i];
else
byte = 0;
unsigned read = byte << (bitPosInByte + 24);
val |= (read >> outPos);
outPos += 8 - bitPosInByte;
bitPosInByte = 0;
}
return val;
}
ExprPtr ResourceCompiler::lookupIdentifier(std::string name, const Subscripts &sub)
{
if(currentField)
@@ -70,10 +101,13 @@ void ResourceCompiler::compile()
if(verboseFlag) std::cout << "(first pass)\n";
currentOffset = 0;
data.clear();
prePass = true;
typeDefinition->compile(body, this, true);
if(verboseFlag) std::cout << "(second pass)\n";
currentOffset = 0;
data.clear();
prePassData = std::move(data);
data.clear(); // ###
prePass = false;
typeDefinition->compile(body, this, false);
if(verboseFlag) std::cout << "(done)\n";