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fixes a lexer regression for 'nimble check'

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This commit is contained in:
Araq
2019-02-05 15:39:55 +01:00
parent 7424ea4315
commit 2e880c726b
1 changed files with 4 additions and 3 deletions
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7
compiler/lexer.nim
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@@ -618,7 +618,7 @@ proc getNumber(L: var TLexer, result: var TToken) =
tokenEnd(result, postPos-1)
L.bufpos = postPos
proc handleHexChar(L: var TLexer, xi: var int; position: range[1..4]) =
proc handleHexChar(L: var TLexer, xi: var int; position: range[0..4]) =
template invalid() =
lexMessage(L, errGenerated,
"expected a hex digit, but found: " & L.buf[L.bufpos] &
@@ -635,8 +635,9 @@ proc handleHexChar(L: var TLexer, xi: var int; position: range[1..4]) =
xi = (xi shl 4) or (ord(L.buf[L.bufpos]) - ord('A') + 10)
inc(L.bufpos)
of '"', '\'':
if position == 1: invalid()
if position <= 1: invalid()
# do not progress the bufpos here.
if position == 0: inc(L.bufpos)
else:
invalid()
# Need to progress for `nim check`
@@ -745,7 +746,7 @@ proc getEscapedChar(L: var TLexer, tok: var TToken) =
inc(L.bufpos)
var start = L.bufpos
while L.buf[L.bufpos] != '}':
handleHexChar(L, xi, 1)
handleHexChar(L, xi, 0)
if start == L.bufpos:
lexMessage(L, errGenerated,
"Unicode codepoint cannot be empty")