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lime
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Updated example to show off the %prec inline pragma

master
Richard van Velzen 2011-12-29 14:11:01 +01:00
parent 9ca1b6ef16
commit bd859b6393
2 changed files with 158 additions and 38 deletions
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178
examples/calc.class
View File

@ -18,10 +18,12 @@ class calc extends lime_parser {
public $i = array(
array(
'exp' => 's 1',
'var' => 's 17',
'var' => 's 23',
'num' => 's 3',
"'('" => 's 14',
'stmt' => 's 20',
"'+'" => 's 16',
"'-'" => 's 18',
"'('" => 's 20',
'stmt' => 's 26',
"'start'" => "a 'start'"
),
array(
@ -30,13 +32,16 @@ class calc extends lime_parser {
"'*'" => 's 8',
"'/'" => 's 10',
"'^'" => 's 12',
"'%'" => 's 14',
'#' => 'r 0'
),
array(
'num' => 's 3',
'var' => 's 4',
'exp' => 's 5',
"'('" => 's 14'
"'+'" => 's 16',
"'-'" => 's 18',
"'('" => 's 20'
),
array(
"'+'" => 'r 2',
@ -44,6 +49,7 @@ class calc extends lime_parser {
"'*'" => 'r 2',
"'/'" => 'r 2',
"'^'" => 'r 2',
"'%'" => 'r 2',
"')'" => 'r 2',
'#' => 'r 2'
),
@ -53,6 +59,7 @@ class calc extends lime_parser {
"'*'" => 'r 3',
"'/'" => 'r 3',
"'^'" => 'r 3',
"'%'" => 'r 3',
"')'" => 'r 3',
'#' => 'r 3'
),
@ -62,6 +69,7 @@ class calc extends lime_parser {
"'*'" => 's 8',
"'/'" => 's 10',
"'^'" => 's 12',
"'%'" => 's 14',
"')'" => 'r 4',
'#' => 'r 4'
),
@ -69,7 +77,9 @@ class calc extends lime_parser {
'num' => 's 3',
'var' => 's 4',
'exp' => 's 7',
"'('" => 's 14'
"'+'" => 's 16',
"'-'" => 's 18',
"'('" => 's 20'
),
array(
"'+'" => 'r 5',
@ -77,6 +87,7 @@ class calc extends lime_parser {
"'*'" => 's 8',
"'/'" => 's 10',
"'^'" => 's 12',
"'%'" => 's 14',
"')'" => 'r 5',
'#' => 'r 5'
),
@ -84,7 +95,9 @@ class calc extends lime_parser {
'num' => 's 3',
'var' => 's 4',
'exp' => 's 9',
"'('" => 's 14'
"'+'" => 's 16',
"'-'" => 's 18',
"'('" => 's 20'
),
array(
"'+'" => 'r 6',
@ -92,6 +105,7 @@ class calc extends lime_parser {
"'*'" => 'r 6',
"'/'" => 'r 6',
"'^'" => 's 12',
"'%'" => 'r 6',
"')'" => 'r 6',
'#' => 'r 6'
),
@ -99,7 +113,9 @@ class calc extends lime_parser {
'num' => 's 3',
'var' => 's 4',
'exp' => 's 11',
"'('" => 's 14'
"'+'" => 's 16',
"'-'" => 's 18',
"'('" => 's 20'
),
array(
"'+'" => 'r 7',
@ -107,6 +123,7 @@ class calc extends lime_parser {
"'*'" => 'r 7',
"'/'" => 'r 7',
"'^'" => 's 12',
"'%'" => 'r 7',
"')'" => 'r 7',
'#' => 'r 7'
),
@ -114,7 +131,9 @@ class calc extends lime_parser {
'num' => 's 3',
'var' => 's 4',
'exp' => 's 13',
"'('" => 's 14'
"'+'" => 's 16',
"'-'" => 's 18',
"'('" => 's 20'
),
array(
"'+'" => 'r 8',
@ -122,6 +141,7 @@ class calc extends lime_parser {
"'*'" => 'r 8',
"'/'" => 'r 8',
"'^'" => 's 12',
"'%'" => 'r 8',
"')'" => 'r 8',
'#' => 'r 8'
),
@ -129,7 +149,63 @@ class calc extends lime_parser {
'num' => 's 3',
'var' => 's 4',
'exp' => 's 15',
"'('" => 's 14'
"'+'" => 's 16',
"'-'" => 's 18',
"'('" => 's 20'
),
array(
"'+'" => 'r 9',
"'-'" => 'r 9',
"'*'" => 'r 9',
"'/'" => 'r 9',
"'^'" => 's 12',
"'%'" => 'r 9',
"')'" => 'r 9',
'#' => 'r 9'
),
array(
'num' => 's 3',
'var' => 's 4',
'exp' => 's 17',
"'+'" => 's 16',
"'-'" => 's 18',
"'('" => 's 20'
),
array(
"'+'" => 'r 10',
"'-'" => 'r 10',
"'*'" => 'r 10',
"'/'" => 'r 10',
"'^'" => 'r 10',
"'%'" => 'r 10',
"')'" => 'r 10',
'#' => 'r 10'
),
array(
'num' => 's 3',
'var' => 's 4',
'exp' => 's 19',
"'+'" => 's 16',
"'-'" => 's 18',
"'('" => 's 20'
),
array(
"'+'" => 'r 11',
"'-'" => 'r 11',
"'*'" => 'r 11',
"'/'" => 'r 11',
"'^'" => 'r 11',
"'%'" => 'r 11',
"')'" => 'r 11',
'#' => 'r 11'
),
array(
'num' => 's 3',
'var' => 's 4',
'exp' => 's 21',
"'+'" => 's 16',
"'-'" => 's 18',
"'('" => 's 20'
),
array(
"'+'" => 's 2',
@ -137,31 +213,36 @@ class calc extends lime_parser {
"'*'" => 's 8',
"'/'" => 's 10',
"'^'" => 's 12',
"')'" => 's 16'
"'%'" => 's 14',
"')'" => 's 22'
),
array(
"'^'" => 'r 9',
"'/'" => 'r 9',
"'*'" => 'r 9',
"'-'" => 'r 9',
"'+'" => 'r 9',
"')'" => 'r 9',
'#' => 'r 9'
"'%'" => 'r 12',
"'^'" => 'r 12',
"'/'" => 'r 12',
"'*'" => 'r 12',
"'-'" => 'r 12',
"'+'" => 'r 12',
"')'" => 'r 12',
'#' => 'r 12'
),
array(
"'='" => 's 18',
"'='" => 's 24',
"'+'" => 'r 3',
"'-'" => 'r 3',
"'*'" => 'r 3',
"'/'" => 'r 3',
"'^'" => 'r 3',
"'%'" => 'r 3',
'#' => 'r 3'
),
array(
'exp' => 's 19',
'exp' => 's 25',
'num' => 's 3',
'var' => 's 4',
"'('" => 's 14'
"'+'" => 's 16',
"'-'" => 's 18',
"'('" => 's 20'
),
array(
"'+'" => 's 2',
@ -169,10 +250,11 @@ class calc extends lime_parser {
"'*'" => 's 8',
"'/'" => 's 10',
"'^'" => 's 12',
"'%'" => 's 14',
'#' => 'r 1'
),
array(
'#' => 'r 10'
'#' => 'r 13'
)
);
function reduce_0_stmt_1($tokens, &$result) {
@ -205,40 +287,58 @@ class calc extends lime_parser {
function reduce_4_exp_3($tokens, &$result) {
// (4) exp := exp '+' exp
$result = reset($tokens);
$result = $tokens[0] + $tokens[2];
$result = '(' . $tokens[0] . ' + ' . $tokens[2] . ')';
}
function reduce_5_exp_4($tokens, &$result) {
// (5) exp := exp '-' exp
$result = reset($tokens);
$result = $tokens[0] - $tokens[2];
$result = '(' . $tokens[0] . ' - ' . $tokens[2] . ')';
}
function reduce_6_exp_5($tokens, &$result) {
// (6) exp := exp '*' exp
$result = reset($tokens);
$result = $tokens[0] * $tokens[2];
$result = '(' . $tokens[0] . ' * ' . $tokens[2] . ')';
}
function reduce_7_exp_6($tokens, &$result) {
// (7) exp := exp '/' exp
$result = reset($tokens);
$result = $tokens[0] / $tokens[2];
$result = '(' . $tokens[0] . ' / ' . $tokens[2] . ')';
}
function reduce_8_exp_7($tokens, &$result) {
// (8) exp := exp '^' exp
$result = reset($tokens);
$result = pow($tokens[0], $tokens[2]);
$result = '(' . $tokens[0] . ' ^ ' . $tokens[2] . ')';
}
function reduce_9_exp_8($tokens, &$result) {
// (9) exp := '(' exp ')'
// (9) exp := exp '%' exp
$result = reset($tokens);
$result = '(' . $tokens[0] . ' % ' . $tokens[2] . ')';
}
function reduce_10_exp_9($tokens, &$result) {
// (10) exp := '+' exp
$result = reset($tokens);
$result = '(+ ' . $tokens[1] . ')';
}
function reduce_11_exp_10($tokens, &$result) {
// (11) exp := '-' exp
$result = reset($tokens);
$result = '(- ' . $tokens[1] . ')';
}
function reduce_12_exp_11($tokens, &$result) {
// (12) exp := '(' exp ')'
$result = $tokens[1];
}
function reduce_10_start_1($tokens, &$result) {
// (10) 'start' := stmt
function reduce_13_start_1($tokens, &$result) {
// (13) 'start' := stmt
$result = reset($tokens);
}
@ -253,7 +353,10 @@ class calc extends lime_parser {
'reduce_7_exp_6',
'reduce_8_exp_7',
'reduce_9_exp_8',
'reduce_10_start_1'
'reduce_10_exp_9',
'reduce_11_exp_10',
'reduce_12_exp_11',
'reduce_13_start_1'
);
public $a = array(
array(
@ -306,6 +409,21 @@ class calc extends lime_parser {
'len' => 3,
'replace' => true
),
array(
'symbol' => 'exp',
'len' => 2,
'replace' => true
),
array(
'symbol' => 'exp',
'len' => 2,
'replace' => true
),
array(
'symbol' => 'exp',
'len' => 3,
'replace' => true
),
array(
'symbol' => "'start'",
'len' => 1,

18
examples/calc.lime
View File

@ -2,8 +2,9 @@
%start stmt
%left '+' '-'
%left '*' '/'
%left '*' '/' '%'
%right '^'
%right T_INC
stmt = exp { echo " -> "; echo $1; echo "\n"; }
| var/v '=' exp/e {
@ -15,12 +16,13 @@ stmt = exp { echo " -> "; echo $1; echo "\n"; }
exp = num
| var { $$ = get_variable($1); }
| exp '+' exp { $$ = $1 + $3; }
| exp '-' exp { $$ = $1 - $3; }
| exp '*' exp { $$ = $1 * $3; }
| exp '/' exp { $$ = $1 / $3; }
| exp '^' exp { $$ = pow($1, $3); }
| exp '+' exp { $$ = '(' . $1 . ' + ' . $3 . ')'; }
| exp '-' exp { $$ = '(' . $1 . ' - ' . $3 . ')'; }
| exp '*' exp { $$ = '(' . $1 . ' * ' . $3 . ')'; }
| exp '/' exp { $$ = '(' . $1 . ' / ' . $3 . ')'; }
| exp '^' exp { $$ = '(' . $1 . ' ^ ' . $3 . ')'; }
| exp '%' exp { $$ = '(' . $1 . ' % ' . $3 . ')'; }
| '+' exp %prec T_INC { $$ = '(+ ' . $2 . ')'; }
| '-' exp %prec T_INC { $$ = '(- ' . $2 . ')'; }
| '(' exp/$ ')'
.