I'm trying to parse some language with multiline string literals using JFlex.
Examples:
'''
this is a valid multiline string literal with 'quoted' word
'''
I've created two states:
%x IN_QUOTED_STRING
%x IN_MULTILINE_QUOTED_STRING
and created several macros and rules:
QUOTED_STRING_TAIL=[^\']* "'"
QUOTED_STRING_START="@"? "'"
MULTILINE_QUOTED_STRING_START = "@"? "'''"
MULTILINE_QUOTED_STRING_TAIL = [.]* "'''"
%%
<YYINITIAL> {MULTILINE_QUOTED_STRING_START} {yybegin(IN_MULTILINE_QUOTED_STRING);}
<YYINITIAL> {QUOTED_STRING_START} {yybegin(IN_QUOTED_STRING);}
<IN_QUOTED_STRING> {QUOTED_STRING_TAIL} {yybegin(YYINITIAL); return STRING;}
<IN_MULTILINE_QUOTED_STRING> {MULTILINE_QUOTED_STRING_TAIL} {yybegin(YYINITIAL); return STRING;}
But it doesn't work. I get "Error: could not match input"
Can anyone helps me with a proplem?
The OP wrote:
works for me:
QUOTED_LITERAL="'" ([^\\\'\r\n] | {ESCAPE_SEQUENCE} | (\[\r\n]))* ("'"|\)? ESCAPE_SEQUENCE=\[^\r\n] ANY_ESCAPE_SEQUENCE = \[^] THREE_QUO = (\"\"\") ONE_TWO_QUO = (\"[^\"]) | (\"\[^]) | (\"\"[^\"]) | (\"\"\[^]) QUO_STRING_CHAR = [^\\\"] | {ANY_ESCAPE_SEQUENCE} | {ONE_TWO_QUO} TRIPLE_QUOTED_LITERAL = {THREE_QUO} {QUO_STRING_CHAR}* {THREE_QUO}? %% <YYINITIAL> {TRIPLE_QUOTED_LITERAL }{ return STRING; } <YYINITIAL> {QUOTED_LITERAL} { return STRING; }
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