Mercurial > projects > dang
view misc/Error.d @ 88:eb5b2c719a39 new_gen
Major change to locations, tokens and expressions.
A location (now SourceLocation or SLoc) is only 32 bit in size -
disadvantage is that it can't find its own text. You have to go through the
new SourceManager to do that.
This has caused changes to a lot of stuff and removal of DataSource and the
old Location
Additionally Exp has gotten some location stuff, so we can give proper
error messages. Not in Decl and Stmt yet, but thats coming too.
author | Anders Halager <halager@gmail.com> |
---|---|
date | Sun, 04 May 2008 18:13:46 +0200 |
parents | 4ae365eff712 |
children | 621cedba53ea |
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module misc.Error; import tango.core.Exception, Array = tango.core.Array, tango.text.Util; import llvm.type; import lexer.Token, sema.DType, sema.Symbol; class Error : Exception { this(char[] message) { super(message); args ~= message; } char[] toString() { char[256] tmp = void; char[] msg = layout(tmp, args); /* if (location.source.name.length > 0) msg = location.toString ~ ": " ~ msg; else msg = msg.dup; if (toks.length > 0) { Array.sort(toks, (Token a, Token b) { return a.location.position - b.location.position; }); char[] data = toks[0].location.source.data; size_t low = toks[0].location.position; size_t high = toks[$ - 1].location.position; size_t line_start = Array.rfind(data[0 .. low], '\n'); size_t line_end = high + Array.find(data[high .. $], '\n'); char[] line = trim(data[line_start + 1 .. line_end]); char[] marks = line.dup; marks[] = ' '; foreach (tok; toks[0 .. $]) { size_t p = tok.location.position - (line.ptr - data.ptr); marks[p .. p + tok.length] = '~'; } size_t p = main_tok.location.position - (line.ptr - data.ptr); marks[p .. p + main_tok.length] = '^'; msg ~= "\n "; msg ~= line; msg ~= "\n "; msg ~= marks; } */ return msg; } Error arg(char[] s) { if (args.length == 11) throw new Exception("Sorry, errors only support up to 10 args"); args ~= s; return this; } Error arg(char[][] s) { char[] res = s[0 .. $ - 1].join(", "); if (s.length > 1) res ~= " and "; res ~= s[$ - 1]; return arg(res); } Error arg(char c) { return arg([c]); } Error arg(DType[] types) { char[][] res; foreach (type; types) res ~= type.name(); return arg(res); } Error arg(Tok[] toks...) { char[][] res; foreach (t; toks) res ~= typeToString[t]; return arg(res); } Error arg(Symbol sym) { return arg(sym.type.name ~ " " ~ sym.id.get); } /* Error loc(Location loc) { location = loc; return this; } */ Error tok(Token tok) { /* if (toks.length > 0) assert(tok.location.source == toks[0].location.source, "Tokens must come from the same source"); else { main_tok = tok; loc = tok.location; } toks ~= tok; */ return this; } private: char[][] args; //Location location; Token[] toks; Token main_tok; }