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Parser: Fix location (line, col) for diagnostics

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Previously parser was using lexMessage which was taking location from current
buffer position which was pointing after recently consumed token. But since
parser shows diagnostics about that token it should point to the location where
token starts.

This makes diagnostics like: `test.nim(2, 2) Error: ':' expected` point
properly at the beginning of the wrong token.
This commit is contained in:
Adam Strzelecki
2015-04-16 00:36:42 +02:00
parent 69ed78b30f
commit 07b13251d1
2 changed files with 7 additions and 3 deletions
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4
compiler/lexer.nim
View File

@@ -221,6 +221,10 @@ proc dispMessage(L: TLexer; info: TLineInfo; msg: TMsgKind; arg: string) =
proc lexMessage*(L: TLexer, msg: TMsgKind, arg = "") =
L.dispMessage(getLineInfo(L), msg, arg)
proc lexMessageTok*(L: TLexer, msg: TMsgKind, tok: TToken, arg = "") =
var info = newLineInfo(L.fileIdx, tok.line, tok.col)
L.dispMessage(info, msg, arg)
proc lexMessagePos(L: var TLexer, msg: TMsgKind, pos: int, arg = "") =
var info = newLineInfo(L.fileIdx, L.lineNumber, pos - L.lineStart)
L.dispMessage(info, msg, arg)

6
compiler/parser.nim
View File

@@ -91,7 +91,7 @@ proc closeParser(p: var TParser) =
proc parMessage(p: TParser, msg: TMsgKind, arg = "") =
## Produce and emit the parser message `arg` to output.
lexMessage(p.lex, msg, arg)
lexMessageTok(p.lex, msg, p.tok, arg)
proc parMessage(p: TParser, msg: TMsgKind, tok: TToken) =
## Produce and emit a parser message to output about the token `tok`
@@ -154,7 +154,7 @@ proc eat(p: var TParser, tokType: TTokType) =
if p.tok.tokType == tokType:
getTok(p)
else:
lexMessage(p.lex, errTokenExpected, TokTypeToStr[tokType])
lexMessageTok(p.lex, errTokenExpected, p.tok, TokTypeToStr[tokType])
proc parLineInfo(p: TParser): TLineInfo =
## Retrieve the line information associated with the parser's current state.
@@ -1636,7 +1636,7 @@ proc parseEnum(p: var TParser): PNode =
p.tok.tokType == tkEof:
break
if result.len <= 1:
lexMessage(p.lex, errIdentifierExpected, prettyTok(p.tok))
lexMessageTok(p.lex, errIdentifierExpected, p.tok, prettyTok(p.tok))
proc parseObjectPart(p: var TParser): PNode
proc parseObjectWhen(p: var TParser): PNode =