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Renamed setError() to error() for more compact error handling.

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This commit is contained in:
Ferdinand Majerech 2014-07-26 13:06:35 +02:00
parent 33110e295e
commit cf014150ca
1 changed files with 63 additions and 65 deletions
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78
source/dyaml/scanner.d
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@ -260,7 +260,7 @@ final class Scanner
/// their callers. /// their callers.
/// ///
/// See_Also: dyaml.exception.MarkedYamlException /// See_Also: dyaml.exception.MarkedYamlException
void setError(string context, const Mark contextMark, string problem, void error(string context, const Mark contextMark, string problem,
const Mark problemMark) @safe pure nothrow @nogc const Mark problemMark) @safe pure nothrow @nogc
{ {
assert(error_ == false, assert(error_ == false,
@ -849,7 +849,7 @@ final class Scanner
if(length == 0) if(length == 0)
{ {
enum contextMsg = "While scanning " ~ name; enum contextMsg = "While scanning " ~ name;
setError(contextMsg, startMark, error(contextMsg, startMark,
buildMsg("expected alphanumeric, '-' or '_', but found ", c), buildMsg("expected alphanumeric, '-' or '_', but found ", c),
reader_.mark); reader_.mark);
return; return;
@ -960,7 +960,7 @@ final class Scanner
if(error_) { return; } if(error_) { return; }
if(" \0\n\r\u0085\u2028\u2029"d.canFind(reader_.peek())) { return; } if(" \0\n\r\u0085\u2028\u2029"d.canFind(reader_.peek())) { return; }
setError("While scanning a directive", startMark, error("While scanning a directive", startMark,
buildMsg("expected alphanumeric, '-' or '_', but found ", reader_.peek()), buildMsg("expected alphanumeric, '-' or '_', but found ", reader_.peek()),
reader_.mark); reader_.mark);
} }
@ -1123,7 +1123,7 @@ final class Scanner
if(error_) { return Token.init; } if(error_) { return Token.init; }
if(reader_.peek() != '>') if(reader_.peek() != '>')
{ {
setError("While scanning a tag", startMark, error("While scanning a tag", startMark,
buildMsg("expected '>' but found ", reader_.peek()), buildMsg("expected '>' but found ", reader_.peek()),
reader_.mark); reader_.mark);
return Token.init; return Token.init;
@ -1169,17 +1169,17 @@ final class Scanner
if(error_) { return Token.init; } if(error_) { return Token.init; }
} }
if(!" \0\n\r\u0085\u2028\u2029"d.canFind(reader_.peek())) if(" \0\n\r\u0085\u2028\u2029"d.canFind(reader_.peek()))
{ {
setError("While scanning a tag", startMark,
buildMsg("expected ' ' but found ", reader_.peek()),
reader_.mark);
return Token.init;
}
const slice = reader_.sliceBuilder.finish(); const slice = reader_.sliceBuilder.finish();
return tagToken(startMark, reader_.mark, slice.utf32To8, handleEnd); return tagToken(startMark, reader_.mark, slice.utf32To8, handleEnd);
} }
error("While scanning a tag", startMark,
buildMsg("expected ' ' but found ", reader_.peek()), reader_.mark);
return Token.init;
}
/// Scan a block scalar token with specified style. /// Scan a block scalar token with specified style.
/// ///
/// In case of an error, error_ is set. Use throwIfError() to handle this. /// In case of an error, error_ is set. Use throwIfError() to handle this.
@ -1347,17 +1347,16 @@ final class Scanner
if(gotIncrement) { getChomping(c, chomping); } if(gotIncrement) { getChomping(c, chomping); }
} }
if(!" \0\n\r\u0085\u2028\u2029"d.canFind(c)) if(" \0\n\r\u0085\u2028\u2029"d.canFind(c))
{ {
setError("While scanning a block scalar", startMark, return tuple(chomping, increment);
}
error("While scanning a block scalar", startMark,
buildMsg("expected chomping or indentation indicator, but found ", c), buildMsg("expected chomping or indentation indicator, but found ", c),
reader_.mark); reader_.mark);
return tuple(Chomping.init, int.max); return tuple(Chomping.init, int.max);
} }
return tuple(chomping, increment);
}
/// Get chomping indicator, if detected. Return false otherwise. /// Get chomping indicator, if detected. Return false otherwise.
/// ///
/// Used in scanBlockScalarIndicators. /// Used in scanBlockScalarIndicators.
@ -1395,17 +1394,16 @@ final class Scanner
// Convert a digit to integer. // Convert a digit to integer.
increment = c - '0'; increment = c - '0';
assert(increment < 10 && increment >= 0, "Digit has invalid value"); assert(increment < 10 && increment >= 0, "Digit has invalid value");
if(increment == 0) if(increment > 0)
{ {
setError("While scanning a block scalar", startMark,
"expected indentation indicator in range 1-9, but found 0",
reader_.mark);
return false;
}
reader_.forward(); reader_.forward();
c = reader_.peek(); c = reader_.peek();
return true; return true;
} }
error("While scanning a block scalar", startMark,
"expected indentation indicator in range 1-9, but found 0", reader_.mark);
return false;
}
/// Scan (and ignore) ignored line in a block scalar. /// Scan (and ignore) ignored line in a block scalar.
/// ///
@ -1415,14 +1413,14 @@ final class Scanner
findNextNonSpace(); findNextNonSpace();
if(reader_.peek()== '#') { scanToNextBreak(); } if(reader_.peek()== '#') { scanToNextBreak(); }
if(!"\0\n\r\u0085\u2028\u2029"d.canFind(reader_.peek())) if("\0\n\r\u0085\u2028\u2029"d.canFind(reader_.peek()))
{ {
setError("While scanning a block scalar", startMark, scanLineBreak();
buildMsg("expected comment or line break, but found ", reader_.peek()),
reader_.mark);
return; return;
} }
scanLineBreak(); error("While scanning a block scalar", startMark,
buildMsg("expected comment or line break, but found ", reader_.peek()),
reader_.mark);
} }
/// Scan indentation in a block scalar, returning line breaks, max indent and end mark. /// Scan indentation in a block scalar, returning line breaks, max indent and end mark.
@ -1519,7 +1517,7 @@ final class Scanner
const slice = reader_.slice(length, length + 32); const slice = reader_.slice(length, length + 32);
if(slice.empty) if(slice.empty)
{ {
setError("While reading a flow scalar", startMark, error("While reading a flow scalar", startMark,
"reached end of file", reader_.mark); "reached end of file", reader_.mark);
return; return;
} }
@ -1560,7 +1558,7 @@ final class Scanner
foreach(i; 0 .. hexLength) if(!reader_.peek(i).isHexDigit()) foreach(i; 0 .. hexLength) if(!reader_.peek(i).isHexDigit())
{ {
setError("While scanning a double quoted scalar", startMark, error("While scanning a double quoted scalar", startMark,
"found an unexpected character; expected escape " "found an unexpected character; expected escape "
"sequence of hexadecimal numbers.", reader_.mark); "sequence of hexadecimal numbers.", reader_.mark);
return; return;
@ -1571,7 +1569,7 @@ final class Scanner
const decoded = cast(dchar)parseNoGC!int(hex, 16u, overflow); const decoded = cast(dchar)parseNoGC!int(hex, 16u, overflow);
if(overflow) if(overflow)
{ {
setError("While scanning a double quoted scalar", startMark, error("While scanning a double quoted scalar", startMark,
"overflow when parsing an escape sequence of " "overflow when parsing an escape sequence of "
"hexadecimal numbers.", reader_.mark); "hexadecimal numbers.", reader_.mark);
return; return;
@ -1586,7 +1584,7 @@ final class Scanner
} }
else else
{ {
setError("While scanning a double quoted scalar", startMark, error("While scanning a double quoted scalar", startMark,
buildMsg("found unsupported escape " "character", c), buildMsg("found unsupported escape " "character", c),
reader_.mark); reader_.mark);
return; return;
@ -1613,7 +1611,7 @@ final class Scanner
const c = whitespaces[$ - 1]; const c = whitespaces[$ - 1];
if(c == '\0') if(c == '\0')
{ {
setError("While scanning a quoted scalar", startMark, error("While scanning a quoted scalar", startMark,
"found unexpected end of buffer", reader_.mark); "found unexpected end of buffer", reader_.mark);
return; return;
} }
@ -1659,7 +1657,7 @@ final class Scanner
if((prefix == "---"d || prefix == "..."d) && if((prefix == "---"d || prefix == "..."d) &&
" \t\0\n\r\u0085\u2028\u2029"d.canFind(reader_.peek(3))) " \t\0\n\r\u0085\u2028\u2029"d.canFind(reader_.peek(3)))
{ {
setError("While scanning a quoted scalar", startMark, error("While scanning a quoted scalar", startMark,
"found unexpected document separator", reader_.mark); "found unexpected document separator", reader_.mark);
return false; return false;
} }
@ -1723,10 +1721,10 @@ final class Scanner
spacesTransaction.commit(); spacesTransaction.commit();
reader_.sliceBuilder.finish(); reader_.sliceBuilder.finish();
reader_.forward(length); reader_.forward(length);
setError("While scanning a plain scalar", startMark, error("While scanning a plain scalar", startMark,
"found unexpected ':' . Please check " "found unexpected ':' . Please check "
"http://pyyaml.org/wiki/YAMLColonInFlowContext " "http://pyyaml.org/wiki/YAMLColonInFlowContext for details.",
"for details.", reader_.mark); reader_.mark);
return Token.init; return Token.init;
} }
@ -1827,7 +1825,7 @@ final class Scanner
enum contextMsg = "While scanning a " ~ name; enum contextMsg = "While scanning a " ~ name;
if(c != '!') if(c != '!')
{ {
setError(contextMsg, startMark, error(contextMsg, startMark,
buildMsg("expected a '!', but found: ", c), reader_.mark); buildMsg("expected a '!', but found: ", c), reader_.mark);
return; return;
} }
@ -1844,7 +1842,7 @@ final class Scanner
if(c != '!') if(c != '!')
{ {
reader_.forward(length); reader_.forward(length);
setError(contextMsg, startMark, error(contextMsg, startMark,
buildMsg("expected a '!', but found: ", c), reader_.mark); buildMsg("expected a '!', but found: ", c), reader_.mark);
return; return;
} }
@ -1891,7 +1889,7 @@ final class Scanner
if(reader_.sliceBuilder.length > startLen) { return; } if(reader_.sliceBuilder.length > startLen) { return; }
enum contextMsg = "While parsing a " ~ name; enum contextMsg = "While parsing a " ~ name;
setError(contextMsg, startMark, buildMsg("expected URI, but found: ", c), error(contextMsg, startMark, buildMsg("expected URI, but found: ", c),
reader_.mark); reader_.mark);
} }
@ -1950,7 +1948,7 @@ final class Scanner
{ {
auto msg = buildMsg("expected URI escape sequence of 2 " auto msg = buildMsg("expected URI escape sequence of 2 "
"hexadecimal numbers, but found: ", c); "hexadecimal numbers, but found: ", c);
setError(contextMsg, startMark, msg, reader_.mark); error(contextMsg, startMark, msg, reader_.mark);
return; return;
} }
@ -1971,7 +1969,7 @@ final class Scanner
} }
catch(UTFException e) catch(UTFException e)
{ {
setError(contextMsg, startMark, e.msg, mark); error(contextMsg, startMark, e.msg, mark);
return; return;
} }
catch(Exception e) catch(Exception e)