the bulk of the compiler

src/script_opt/CPP/Emit.cc

@@ -0,0 +1,73 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
+#include <errno.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+#include "zeek/script_opt/CPP/Compile.h"
+
+
+namespace zeek::detail {
+
+void CPPCompile::StartBlock()
+	{
+	++block_level;
+	Emit("{");
+	}
+
+void CPPCompile::EndBlock(bool needs_semi)
+	{
+	Emit("}%s", needs_semi ? ";" : "");
+	--block_level;
+	}
+
+std::string CPPCompile::GenString(const char* b, int len) const
+	{
+	return std::string("make_intrusive<StringVal>(") + Fmt(len) +
+			", " + CPPEscape(b, len) + ")";
+	}
+
+std::string CPPCompile::CPPEscape(const char* b, int len) const
+	{
+	std::string res = "\"";
+
+	for ( int i = 0; i < len; ++i )
+		{
+		unsigned char c = b[i];
+
+		switch ( c ) {
+		case '\a':	res += "\\a"; break;
+		case '\b':	res += "\\b"; break;
+		case '\f':	res += "\\f"; break;
+		case '\n':	res += "\\n"; break;
+		case '\r':	res += "\\r"; break;
+		case '\t':	res += "\\t"; break;
+		case '\v':	res += "\\v"; break;
+
+		case '\\':	res += "\\\\"; break;
+		case '"':	res += "\\\""; break;
+
+		default:
+			if ( isprint(c) )
+				res += c;
+			else
+				{
+				char buf[8192];
+				snprintf(buf, sizeof buf, "%03o", c);
+				res += "\\";
+				res += buf;
+				}
+			break;
+		}
+		}
+
+	return res + "\"";
+	}
+
+void CPPCompile::Indent() const
+	{
+	for ( auto i = 0; i < block_level; ++i )
+		fprintf(write_file, "%s", "\t");
+	}
+
+} // zeek::detail