%token <ival> NUM "number"
%type <ival> exp
-%nonassoc '=' /* comparison */
+%nonassoc '=' /* comparison */
%left '-' '+'
%left '*' '/'
-%left NEG /* negation--unary minus */
+%precedence NEG /* negation--unary minus */
%right '^' /* exponentiation */
%%
{
if ($l != $r)
fprintf (stderr, "calc: error: %d != %d\n", $l, $r);
- $$ = $l;
+ $$ = $l;
}
| exp[x] '+' { $<ival>$ = $x; } [l] exp[r] { $$ = $<ival>l + $r; }
| exp[l] '-' exp[r] { $$ = $l - $r; }
(2^2)^3 = 64
]])
-AT_BISON_CHECK([-o test.c test.y])
-AT_COMPILE([[test]])
+AT_FULL_COMPILE([[test]])
AT_PARSER_CHECK([./test input.txt], 0, [], [stderr])
AT_BISON_OPTION_POPDEFS
AT_CLEANUP
-#######################################################################
+## ------------------------------------ ##
+## Undefined and ambiguous references. ##
+## ------------------------------------ ##
AT_SETUP([Undefined and ambiguous references])
%token <ival> NUM "number"
%type <ival> exp
-%nonassoc '=' /* comparison */
+%nonassoc '=' /* comparison */
%left '-' '+'
%left '*' '/'
-%left NEG /* negation--unary minus */
+%precedence NEG /* negation--unary minus */
%right '^' /* exponentiation */
%%
{
if ($l != $r)
fprintf (stderr, "calc: error: %d != %d\n", $l, $r);
- $$ = $l;
+ $$ = $l;
}
| exp[x] '+' { $<ival>$ = $x; } [l] exp[r] { $$ = $<ival>lo9 + $r; }
| exp[x] '-' { $<ival>$ = $x; } [l] exp[r] { $$ = $<ival>exp - $r; }
%%
]])
-AT_BISON_CHECK([-o test.c test.y], 1, [],
-[[test.y:50.51-60: error: invalid reference: '$<ival>lo9'
-test.y:50.3-68: symbol not found in production: lo9
-test.y:51.51-60: warning: misleading reference: '$<ival>exp'
-test.y:42.1-3: refers to: $exp at $$
-test.y:51.7: possibly meant: $x, hiding $exp at $1
-test.y:51.41: possibly meant: $r, hiding $exp at $4
-test.y:52.51-52: error: $l of 'exp' has no declared type
-test.y:55.40-43: error: invalid reference: '$r12'
-test.y:55.3-47: symbol not found in production: r12
-test.y:56.29-33: error: invalid reference: '$expo'
-test.y:56.3-46: symbol not found in production: expo
+AT_BISON_CHECK([-fcaret -o test.c test.y], 1, [],
+[[test.y:52.51-60: error: invalid reference: '$<ival>lo9'
+ | exp[x] '+' { $<ival>$ = $x; } [l] exp[r] { $$ = $<ival>lo9 + $r; }
+ ^^^^^^^^^^
+test.y:52.3-68: symbol not found in production: lo9
+ | exp[x] '+' { $<ival>$ = $x; } [l] exp[r] { $$ = $<ival>lo9 + $r; }
+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+test.y:53.51-60: warning: misleading reference: '$<ival>exp' [-Wother]
+ | exp[x] '-' { $<ival>$ = $x; } [l] exp[r] { $$ = $<ival>exp - $r; }
+ ^^^^^^^^^^
+test.y:44.1-3: refers to: $exp at $$
+ exp:
+ ^^^
+test.y:53.7: possibly meant: $x, hiding $exp at $1
+ | exp[x] '-' { $<ival>$ = $x; } [l] exp[r] { $$ = $<ival>exp - $r; }
+ ^
+test.y:53.41: possibly meant: $r, hiding $exp at $4
+ | exp[x] '-' { $<ival>$ = $x; } [l] exp[r] { $$ = $<ival>exp - $r; }
+ ^
+test.y:54.51-52: error: $l of 'exp' has no declared type
+ | exp[x] '*' { $<ival>$ = $x; } [l] exp[r] { $$ = $l * $r; }
+ ^^
+test.y:57.40-43: error: invalid reference: '$r12'
+ | exp[l] '^' exp[r] { $$ = power ($l, $r12); }
+ ^^^^
+test.y:57.3-47: symbol not found in production: r12
+ | exp[l] '^' exp[r] { $$ = power ($l, $r12); }
+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+test.y:58.29-33: error: invalid reference: '$expo'
+ | '(' exp ')' { $$ = $expo; }
+ ^^^^^
+test.y:58.3-46: symbol not found in production: expo
+ | '(' exp ')' { $$ = $expo; }
+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
]])
AT_BISON_OPTION_POPDEFS
AT_CLEANUP
-#######################################################################
+
+## ----------------------- ##
+## Misleading references. ##
+## ----------------------- ##
AT_SETUP([Misleading references])
AT_DATA_GRAMMAR([test.y],
foo.bar: '2'
]])
AT_BISON_CHECK([-o test.c test.y], 0, [],
-[[test.y:11.22-29: warning: misleading reference: '$foo.bar'
+[[test.y:11.22-29: warning: misleading reference: '$foo.bar' [-Wother]
test.y:11.8-10: refers to: $foo at $1
test.y:11.12-18: possibly meant: $[foo.bar] at $2
]])
;
]])
AT_BISON_CHECK([[test.y]], [[0]], [],
-[[test.y:4.9: warning: stray '$'
-test.y:5.9: warning: stray '@'
+[[test.y:4.9: warning: stray '$' [-Wother]
+test.y:5.9: warning: stray '@' [-Wother]
]])
AT_CLEANUP