RosettaCodeData/Task/Compiler-lexical-analyzer/Phix/compiler-lexical-analyzer-2.phix
2023-07-01 13:44:08 -04:00

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(phixonline)-->
<span style="color: #000080;font-style:italic;">--
-- demo\rosetta\Compiler\js_io.e
-- =============================
--
-- Fake file i/o for running under pwa/p2js in a browser
-- Does not cover the human readable reload parts of extra.e
--</span>
<span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span>
<span style="color: #004080;">sequence</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">known_files</span><span style="color: #0000FF;">,</span><span style="color: #000000;">kfc</span><span style="color: #0000FF;">}</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">columnize</span><span style="color: #0000FF;">({</span>
<span style="color: #0000FF;">{</span><span style="color: #008000;">"test3.c"</span><span style="color: #0000FF;">,</span><span style="color: #7060A8;">split</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"""
/*
All lexical tokens - not syntactically correct, but that will
have to wait until syntax analysis
*/
/* Print */ print /* Sub */ -
/* Putc */ putc /* Lss */ &lt;
/* If */ if /* Gtr */ &gt;
/* Else */ else /* Leq */ &lt;=
/* While */ while /* Geq */ &gt;=
/* Lbrace */ { /* Eq */ ==
/* Rbrace */ } /* Neq */ !=
/* Lparen */ ( /* And */ &&
/* Rparen */ ) /* Or */ ||
/* Uminus */ - /* Semi */ ;
/* Not */ ! /* Comma */ ,
/* Mul */ * /* Assign */ =
/* Div */ / /* Integer */ 42
/* Mod */ % /* String */ "String literal"
/* Add */ + /* Ident */ variable_name
/* character literal */ '\n'
/* character literal **/ '\\'
/* character literal */ ' '
"""</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"\n"</span><span style="color: #0000FF;">)},</span>
<span style="color: #0000FF;">{</span><span style="color: #008000;">"test4.c"</span><span style="color: #0000FF;">,</span><span style="color: #7060A8;">split</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"""
/*** test printing, embedded \n and comments with lots of '*' ***/
print(42);
print("\nHello World\nGood Bye\nok\n");
print("Print a slash n - \\n.\n");
"""</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"\n"</span><span style="color: #0000FF;">)},</span>
<span style="color: #0000FF;">{</span><span style="color: #008000;">"primes.c"</span><span style="color: #0000FF;">,</span><span style="color: #7060A8;">split</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"""
/*
Simple prime number generator
*/
count = 1;
n = 1;
limit = 100;
while (n &lt; limit) {
k=3;
p=1;
n=n+2;
while ((k*k&lt;=n) && (p)) {
p=n/k*k!=n;
k=k+2;
}
if (p) {
print(n, " is prime\n");
count = count + 1;
}
}
print("Total primes found: ", count, "\n");
"""</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"\n"</span><span style="color: #0000FF;">)},</span>
<span style="color: #0000FF;">{</span><span style="color: #008000;">"gcd.c"</span><span style="color: #0000FF;">,</span><span style="color: #7060A8;">split</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"""
/* Compute the gcd of 1071, 1029: 21 */
a = 1071;
b = 1029;
while (b != 0) {
new_a = b;
b = a % b;
a = new_a;
}
print(a);
"""</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"\n"</span><span style="color: #0000FF;">)},</span>
<span style="color: #0000FF;">{</span><span style="color: #008000;">"Header.h"</span><span style="color: #0000FF;">,</span><span style="color: #7060A8;">split</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"""
#define area(h, w) h * w
"""</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"\n"</span><span style="color: #0000FF;">)},</span>
<span style="color: #0000FF;">{</span><span style="color: #008000;">"Source.t"</span><span style="color: #0000FF;">,</span><span style="color: #7060A8;">split</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"""
#include "Header.h"
#define width 5
#define height 6
area = #area(height, width)#;
"""</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"\n"</span><span style="color: #0000FF;">)}})</span>
<span style="color: #004080;">sequence</span> <span style="color: #000000;">linenos</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">repeat</span><span style="color: #0000FF;">(-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">known_files</span><span style="color: #0000FF;">))</span>
<span style="color: #008080;">global</span> <span style="color: #008080;">function</span> <span style="color: #000000;">js_open</span><span style="color: #0000FF;">(</span><span style="color: #004080;">string</span> <span style="color: #000000;">filename</span><span style="color: #0000FF;">)</span>
<span style="color: #004080;">integer</span> <span style="color: #000000;">fn</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">find</span><span style="color: #0000FF;">(</span><span style="color: #000000;">filename</span><span style="color: #0000FF;">,</span><span style="color: #000000;">known_files</span><span style="color: #0000FF;">)</span>
<span style="color: #7060A8;">assert</span><span style="color: #0000FF;">(</span><span style="color: #000000;">fn</span><span style="color: #0000FF;">!=</span><span style="color: #000000;">0</span><span style="color: #0000FF;">)</span>
<span style="color: #000000;">linenos</span><span style="color: #0000FF;">[</span><span style="color: #000000;">fn</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">0</span>
<span style="color: #008080;">return</span> <span style="color: #000000;">fn</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #008080;">global</span> <span style="color: #008080;">function</span> <span style="color: #000000;">js_gets</span><span style="color: #0000FF;">(</span><span style="color: #004080;">integer</span> <span style="color: #000000;">fn</span><span style="color: #0000FF;">)</span>
<span style="color: #004080;">integer</span> <span style="color: #000000;">lineno</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">linenos</span><span style="color: #0000FF;">[</span><span style="color: #000000;">fn</span><span style="color: #0000FF;">]+</span><span style="color: #000000;">1</span>
<span style="color: #008080;">if</span> <span style="color: #000000;">lineno</span><span style="color: #0000FF;"><=</span><span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">kfc</span><span style="color: #0000FF;">[</span><span style="color: #000000;">fn</span><span style="color: #0000FF;">])</span> <span style="color: #008080;">then</span>
<span style="color: #000000;">linenos</span><span style="color: #0000FF;">[</span><span style="color: #000000;">fn</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">lineno</span>
<span style="color: #008080;">return</span> <span style="color: #000000;">kfc</span><span style="color: #0000FF;">[</span><span style="color: #000000;">fn</span><span style="color: #0000FF;">][</span><span style="color: #000000;">lineno</span><span style="color: #0000FF;">]</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #008080;">return</span> <span style="color: #000000;">EOF</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<!--