7 //     http://www.apache.org/licenses/LICENSE-2.0
10 // distributed under the License is distributed on an "AS IS" BASIS,
24 bool Lexer::Error(const string& message, string* err) {  in Error()  function in Lexer
34   int col = last_token_ ? (int)(last_token_ - line_start) : 0;  in Error()
76   case ERROR:    return "lexing error";  in TokenName()
112   return "lexing error";  in DescribeLastError()
133     simple_varname = [a-zA-Z0-9_-]+;  in ReadToken()
134     varname = [a-zA-Z0-9_.-]+;  in ReadToken()
136     [ ]*"#"[^\000\n]*"\n" { continue; }  in ReadToken()
153     [^]        { token = ERROR;    break; }  in ReadToken()
178     [ ]+    { continue; }  in EatWhitespace()
179     "$\r\n" { continue; }  in EatWhitespace()
180     "$\n"   { continue; }  in EatWhitespace()
194       out->assign(start, p - start);  in ReadIdent()
217       eval->AddText(StringPiece(start, p - start));  in ReadEvalString()
218       continue;  in ReadEvalString()
232         eval->AddText(StringPiece(start, 1));  in ReadEvalString()
233         continue;  in ReadEvalString()
237       eval->AddText(StringPiece("$", 1));  in ReadEvalString()
238       continue;  in ReadEvalString()
241       eval->AddText(StringPiece(" ", 1));  in ReadEvalString()
242       continue;  in ReadEvalString()
245       continue;  in ReadEvalString()
248       continue;  in ReadEvalString()
251       eval->AddSpecial(StringPiece(start + 2, p - start - 3));  in ReadEvalString()
252       continue;  in ReadEvalString()
255       eval->AddSpecial(StringPiece(start + 1, p - start - 1));  in ReadEvalString()
256       continue;  in ReadEvalString()
259       eval->AddText(StringPiece(":", 1));  in ReadEvalString()
260       continue;  in ReadEvalString()
264       return Error("bad $-escape (literal $ must be written as $$)", err);  in ReadEvalString()
268       return Error("unexpected EOF", err);  in ReadEvalString()
272       return Error(DescribeLastError(), err);  in ReadEvalString()
280   // Non-path strings end in newlines, so there's no whitespace to eat.  in ReadEvalString()