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* NEWS: Bison-generated C parsers no longer quote literal strings

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associated with tokens.
* src/output.c (prepare_symbols): Don't escape strings,
since users don't want to see C escapes.
* tests/calc.at (AT_CHECK_CALC): Adjust to lack of quotes
in diagnostics.
* tests/regression.at (Token definitions, Web2c Actions): Likewise.
This commit is contained in:
Paul Eggert
2005-04-17 08:07:15 +00:00
parent 1094323fe4
commit 72f000b088
5 changed files with 36 additions and 16 deletions
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10
ChangeLog
View File

@@ -1,3 +1,13 @@
2005-04-17 Paul Eggert <eggert@cs.ucla.edu>
* NEWS: Bison-generated C parsers no longer quote literal strings
associated with tokens.
* src/output.c (prepare_symbols): Don't escape strings,
since users don't want to see C escapes.
* tests/calc.at (AT_CHECK_CALC): Adjust to lack of quotes
in diagnostics.
* tests/regression.at (Token definitions, Web2c Actions): Likewise.
2005-04-16 Paul Eggert <eggert@cs.ucla.edu>
* tests/torture.at (AT_INCREASE_DATA_SIZE): Skip the test if

6
NEWS
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@@ -7,6 +7,12 @@ Changes in version 2.0a, ????-??-??:
English to the user's language, e.g., _("syntax error"). By default,
_ is defined to be a no-op macro so the strings are not translated.
* When generating verbose diagnostics, Bison-generated C parsers no longer
quote the literal strings associated with tokens. For example, for
a syntax error associated with '%token NUM "number"' they might
print 'syntax error, unexpected number' instead of 'syntax error,
unexpected "number"'.
Changes in version 2.0, 2004-12-25:
* Possibly-incompatible changes

5
src/output.c
View File

@@ -162,7 +162,10 @@ prepare_symbols (void)
int j = 2;
for (i = 0; i < nsyms; i++)
{
const char *cp = quotearg_style (c_quoting_style, symbols[i]->tag);
char const *tag = symbols[i]->tag;
char const *cp = (*tag == '"'
? tag
: quotearg_style (c_quoting_style, tag));
/* Width of the next token, including the two quotes, the
comma and the space. */
int width = strlen (cp) + 2;

20
tests/calc.at
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@@ -467,9 +467,9 @@ _AT_CHECK_CALC([$1],
# Some syntax errors.
_AT_CHECK_CALC_ERROR([$1], [1], [0 0], [13],
[1.2: syntax error, unexpected "number"])
[1.2: syntax error, unexpected number])
_AT_CHECK_CALC_ERROR([$1], [1], [1//2], [18],
[1.2: syntax error, unexpected '/', expecting "number" or '-' or '(' or '!'])
[1.2: syntax error, unexpected '/', expecting number or '-' or '(' or '!'])
_AT_CHECK_CALC_ERROR([$1], [1], [error], [5],
[1.0: syntax error, unexpected $undefined])
_AT_CHECK_CALC_ERROR([$1], [1], [1 = 2 = 3], [26],
@@ -481,7 +481,7 @@ _AT_CHECK_CALC_ERROR([$1], [1],
[2.0: syntax error, unexpected '+'])
# Exercise error messages with EOF: work on an empty file.
_AT_CHECK_CALC_ERROR([$1], [1], [/dev/null], [5],
[1.0: syntax error, unexpected "end of input"])
[1.0: syntax error, unexpected end of input])
# Exercise the error token: without it, we die at the first error,
# hence be sure to
@@ -502,20 +502,20 @@ _AT_CHECK_CALC_ERROR([$1], [1], [/dev/null], [5],
_AT_CHECK_CALC_ERROR([$1], [0],
[() + (1 + 1 + 1 +) + (* * *) + (1 * 2 * *) = 1],
[188],
[1.1: syntax error, unexpected ')', expecting "number" or '-' or '(' or '!'
1.17: syntax error, unexpected ')', expecting "number" or '-' or '(' or '!'
1.22: syntax error, unexpected '*', expecting "number" or '-' or '(' or '!'
1.40: syntax error, unexpected '*', expecting "number" or '-' or '(' or '!'
[1.1: syntax error, unexpected ')', expecting number or '-' or '(' or '!'
1.17: syntax error, unexpected ')', expecting number or '-' or '(' or '!'
1.22: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
1.40: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
calc: error: 4444 != 1])
# The same, but this time exercising explicitly triggered syntax errors.
# POSIX says the look-ahead causing the error should not be discarded.
_AT_CHECK_CALC_ERROR([$1], [0], [(!) + (0 0) = 1], [75],
[1.9: syntax error, unexpected "number"
[1.9: syntax error, unexpected number
calc: error: 2222 != 1])
_AT_CHECK_CALC_ERROR([$1], [0], [(- *) + (0 0) = 1], [85],
[1.3: syntax error, unexpected '*', expecting "number" or '-' or '(' or '!'
1.11: syntax error, unexpected "number"
[1.3: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
1.11: syntax error, unexpected number
calc: error: 2222 != 1])
AT_BISON_OPTION_POPDEFS

11
tests/regression.at
View File

@@ -324,9 +324,9 @@ int yylex (void);
%token B_TOKEN "b"
%token C_TOKEN 'c'
%token 'd' D_TOKEN
%token SPECIAL "\\\'\?\"\a\b\f\n\r\t\v\001\377\x001\x0000ff"
%token SPECIAL "\\\'\?\"\n\t??!"
%%
exp: "a" "\\\'\?\"\a\b\f\n\r\t\v\001\377\x001\x0000ff";
exp: "a" "\\\'\?\"\n\t??!";
%%
void
yyerror (char const *s)
@@ -350,7 +350,8 @@ main (void)
AT_CHECK([bison -o input.c input.y])
AT_COMPILE([input])
AT_PARSER_CHECK([./input], 1, [],
[syntax error, unexpected "\\'?\"\a\b\f\n\r\t\v\001\377\001\377", expecting "a"
[syntax error, unexpected \'?"
??!, expecting a
])
AT_CLEANUP
@@ -634,8 +635,8 @@ static const unsigned char yyrline[] =
};
static const char *const yytname[] =
{
"$end", "error", "$undefined", "\"if\"", "\"const\"", "\"then\"",
"\"else\"", "$accept", "statement", "struct_stat", "if", "else", 0
"$end", "error", "$undefined", "if", "const", "then", "else", "$accept",
"statement", "struct_stat", "if", "else", 0
};
static const unsigned short int yytoknum[] =
{