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https://github.com/ksherlock/mpw.git
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94 lines
1.3 KiB
Ragel
94 lines
1.3 KiB
Ragel
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#include <unordered_map>
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#include <string>
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#include <cstdio>
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#include "debugger.h"
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%%{
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machine traplist;
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action error {
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fprintf(stderr, "Invalid line: %d %.*s", line, (int)length, cp);
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fprintf(stderr, "%s - %x\n", name.c_str(), trap);
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}
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main :=
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[ \t]*
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[_A-Za-z][_A-Za-z0-9]* @{
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name.push_back(fc);
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}
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[ \t]*
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'='
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[ \t]*
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('0x' | '$')
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[0-9A-Fa-f]+ @{
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trap = (trap << 4) + digittoint(fc);
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}
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[ \t\r\n]*
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%eof {
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// final state
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map.emplace(name, trap);
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}
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@eof(error)
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$err(error)
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;
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}%%
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namespace Debug {
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std::unordered_map<std::string, uint16_t> LoadTrapFile(const std::string &path)
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{
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%% write data nofinal;
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FILE *fp;
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std::unordered_map<std::string, uint16_t> map;
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fp = fopen(path.c_str(), "r");
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if (!fp)
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{
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fprintf(stderr, "Unable to open file %s\n", path.c_str());
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return map;
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}
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int line = 0;
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for(;;)
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{
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char *cp;
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size_t length;
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cp = fgetln(fp, &length);
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if (!cp) break;
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++line;
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while (isspace(*cp) && length)
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{
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++cp;
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length--;
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}
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if (!length) continue;
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if (*cp == '#') continue;
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char *p = cp;
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char *pe = p + length;
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char *eof = p + length;
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int cs;
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std::string name;
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uint16_t trap = 0;
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%% write init;
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/* ... */
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%% write exec;
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}
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fclose(fp);
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return map;
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}
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}
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