elna/source/main.d

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2022-06-05 15:16:04 +02:00
import core.stdc.stdio;
import core.stdc.string;
import core.stdc.stdlib;
import elna.lexer;
import elna.parser;
import elna.generator;
import elna.ir;
import tanya.container.string;
import tanya.memory.allocator;
import tanya.memory.mmappool;
private char[] readSource(size_t N)(string source, out char[N] buffer) @nogc
{
memcpy(buffer.ptr, source.ptr, source.length + 1);
buffer[source.length] = '\0';
auto handle = fopen(buffer.ptr, "r");
if (handle is null)
{
perror(buffer.ptr);
return null;
}
fseek(handle, 0, SEEK_END);
size_t fsize = ftell(handle);
rewind(handle);
fread(buffer.ptr, fsize, 1, handle);
fclose(handle);
buffer[fsize] = '\0';
return buffer[0 .. fsize];
}
int main(string[] args)
{
char[255] buffer;
defaultAllocator = MmapPool.instance;
if (args.length < 2)
{
return 4;
}
auto sourceText = readSource(args[1], buffer);
if (sourceText is null)
{
return 3;
}
auto tokens = lex(sourceText);
if (tokens.length == 0)
{
printf("Lexical analysis failed.\n");
return 1;
}
auto ast = parse(tokens);
if (!ast.valid)
{
auto compileError = ast.error.get;
printf("%lu:%lu: %s\n", compileError.line, compileError.column, compileError.message.ptr);
return 2;
}
auto ir = transform(ast.result);
String outputFilename = String("build/");
outputFilename.insertBack(args[1][0 .. $ - 4]);
outputFilename.insertBack("o");
writeObject(ir, outputFilename);
auto code = generate(ir);
printf("%s", code.toStringz());
return 0;
}