161 lines
45 KiB
Text
161 lines
45 KiB
Text
(phixonline)-->
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<span style="color: #000080;font-style:italic;">--
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-- demo\rosetta\Compiler\core.e
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-- ============================
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--
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-- Standard declarations and routines used by lex.exw, parse.exw, cgen.exw, and interp.exw
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-- (included in distribution as above, which contains some additional sanity checks)
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--</span>
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<span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span>
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<span style="color: #008080;">global</span> <span style="color: #008080;">constant</span> <span style="color: #000000;">EOF</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">STDIN</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">STDOUT</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">1</span>
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<span style="color: #008080;">global</span> <span style="color: #008080;">enum</span> <span style="color: #000000;">NONE</span><span style="color: #0000FF;">=</span><span style="color: #000000;">0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">UNARY</span><span style="color: #0000FF;">=</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">BINARY</span><span style="color: #0000FF;">=</span><span style="color: #000000;">2</span>
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<span style="color: #008080;">global</span> <span style="color: #008080;">type</span> <span style="color: #000000;">nary</span><span style="color: #0000FF;">(</span><span style="color: #004080;">integer</span> <span style="color: #000000;">n</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">return</span> <span style="color: #000000;">n</span><span style="color: #0000FF;">=</span><span style="color: #000000;">NONE</span> <span style="color: #008080;">or</span> <span style="color: #000000;">n</span><span style="color: #0000FF;">=</span><span style="color: #000000;">UNARY</span> <span style="color: #008080;">or</span> <span style="color: #000000;">n</span><span style="color: #0000FF;">=</span><span style="color: #000000;">BINARY</span> <span style="color: #008080;">end</span> <span style="color: #008080;">type</span>
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<span style="color: #008080;">global</span> <span style="color: #004080;">sequence</span> <span style="color: #000000;">tkNames</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{}</span> <span style="color: #000080;font-style:italic;">-- eg/ie {"Op_multiply","Op_divide",..}</span>
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<span style="color: #008080;">global</span> <span style="color: #004080;">sequence</span> <span style="color: #000000;">precedences</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{}</span>
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<span style="color: #008080;">global</span> <span style="color: #004080;">sequence</span> <span style="color: #000000;">narys</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{}</span> <span style="color: #000080;font-style:italic;">-- NONE/UNARY/BINARY</span>
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<span style="color: #008080;">global</span> <span style="color: #004080;">sequence</span> <span style="color: #000000;">operators</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{}</span> <span style="color: #000080;font-style:italic;">-- eg/ie {"*","/","+","-","<","<=",..}</span>
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<span style="color: #008080;">global</span> <span style="color: #004080;">sequence</span> <span style="color: #000000;">opcodes</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{}</span> <span style="color: #000080;font-style:italic;">-- idx to tkNames, matching operators</span>
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<span style="color: #008080;">global</span> <span style="color: #008080;">constant</span> <span style="color: #000000;">KEYWORDS</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">new_dict</span><span style="color: #0000FF;">()</span> <span style="color: #000080;font-style:italic;">-- eg/ie {"if"=>idx to tkNames}</span>
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<span style="color: #008080;">global</span> <span style="color: #008080;">enum</span> <span style="color: #000000;">OPERATOR</span><span style="color: #0000FF;">=</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">DIGIT</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">LETTER</span> <span style="color: #000080;font-style:italic;">-- character classes</span>
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<span style="color: #008080;">global</span> <span style="color: #004080;">sequence</span> <span style="color: #000000;">charmap</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">repeat</span><span style="color: #0000FF;">(</span><span style="color: #000000;">0</span><span style="color: #0000FF;">,</span><span style="color: #000000;">255</span><span style="color: #0000FF;">)</span>
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<span style="color: #000000;">charmap</span><span style="color: #0000FF;">[</span><span style="color: #008000;">'0'</span><span style="color: #0000FF;">..</span><span style="color: #008000;">'9'</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">DIGIT</span>
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<span style="color: #000000;">charmap</span><span style="color: #0000FF;">[</span><span style="color: #008000;">'A'</span><span style="color: #0000FF;">..</span><span style="color: #008000;">'Z'</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">LETTER</span>
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<span style="color: #000000;">charmap</span><span style="color: #0000FF;">[</span><span style="color: #008000;">'a'</span><span style="color: #0000FF;">..</span><span style="color: #008000;">'z'</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">LETTER</span>
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<span style="color: #000000;">charmap</span><span style="color: #0000FF;">[</span><span style="color: #008000;">'_'</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">LETTER</span>
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<span style="color: #008080;">function</span> <span style="color: #000000;">tkName</span><span style="color: #0000FF;">(</span><span style="color: #004080;">string</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">nary</span> <span style="color: #000000;">n</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">NONE</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">integer</span> <span style="color: #000000;">precedence</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">)</span>
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<span style="color: #000000;">tkNames</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">append</span><span style="color: #0000FF;">(</span><span style="color: #000000;">tkNames</span><span style="color: #0000FF;">,</span><span style="color: #000000;">s</span><span style="color: #0000FF;">)</span>
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<span style="color: #000000;">narys</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">append</span><span style="color: #0000FF;">(</span><span style="color: #000000;">narys</span><span style="color: #0000FF;">,</span><span style="color: #000000;">n</span><span style="color: #0000FF;">)</span>
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<span style="color: #000000;">precedences</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">append</span><span style="color: #0000FF;">(</span><span style="color: #000000;">precedences</span><span style="color: #0000FF;">,</span><span style="color: #000000;">precedence</span><span style="color: #0000FF;">)</span>
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<span style="color: #008080;">return</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">tkNames</span><span style="color: #0000FF;">)</span>
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<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
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<span style="color: #008080;">function</span> <span style="color: #000000;">tkOp</span><span style="color: #0000FF;">(</span><span style="color: #004080;">string</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">string</span> <span style="color: #000000;">op</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">nary</span> <span style="color: #000000;">n</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">integer</span> <span style="color: #000000;">precedence</span><span style="color: #0000FF;">)</span>
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<span style="color: #004080;">integer</span> <span style="color: #000000;">res</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkName</span><span style="color: #0000FF;">(</span><span style="color: #000000;">s</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">n</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">precedence</span><span style="color: #0000FF;">)</span>
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<span style="color: #000000;">operators</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">append</span><span style="color: #0000FF;">(</span><span style="color: #000000;">operators</span><span style="color: #0000FF;">,</span><span style="color: #000000;">op</span><span style="color: #0000FF;">)</span>
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<span style="color: #000000;">opcodes</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">append</span><span style="color: #0000FF;">(</span><span style="color: #000000;">opcodes</span><span style="color: #0000FF;">,</span><span style="color: #000000;">res</span><span style="color: #0000FF;">)</span>
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<span style="color: #008080;">for</span> <span style="color: #000000;">i</span><span style="color: #0000FF;">=</span><span style="color: #000000;">1</span> <span style="color: #008080;">to</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">op</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">do</span>
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<span style="color: #000000;">charmap</span><span style="color: #0000FF;">[</span><span style="color: #000000;">op</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">]]</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">OPERATOR</span>
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<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
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<span style="color: #008080;">return</span> <span style="color: #000000;">res</span>
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<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
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<span style="color: #008080;">function</span> <span style="color: #000000;">tkKw</span><span style="color: #0000FF;">(</span><span style="color: #004080;">string</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">string</span> <span style="color: #000000;">keyword</span><span style="color: #0000FF;">)</span>
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<span style="color: #004080;">integer</span> <span style="color: #000000;">res</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkName</span><span style="color: #0000FF;">(</span><span style="color: #000000;">s</span><span style="color: #0000FF;">)</span>
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<span style="color: #7060A8;">putd</span><span style="color: #0000FF;">(</span><span style="color: #000000;">keyword</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">res</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">KEYWORDS</span><span style="color: #0000FF;">)</span>
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<span style="color: #008080;">return</span> <span style="color: #000000;">res</span>
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<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
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<span style="color: #008080;">global</span> <span style="color: #008080;">constant</span>
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<span style="color: #000000;">tk_EOI</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkName</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"End_of_input"</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--1</span>
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<span style="color: #000000;">tk_mul</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkOp</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Op_multiply"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"*"</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">BINARY</span><span style="color: #0000FF;">,</span><span style="color: #000000;">13</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--2</span>
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<span style="color: #000000;">tk_div</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkOp</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Op_divide"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"/"</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">BINARY</span><span style="color: #0000FF;">,</span><span style="color: #000000;">13</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--3</span>
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<span style="color: #000000;">tk_mod</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkOp</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Op_mod"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"%"</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">BINARY</span><span style="color: #0000FF;">,</span><span style="color: #000000;">13</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--4</span>
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<span style="color: #000000;">tk_add</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkOp</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Op_add"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"+"</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">BINARY</span><span style="color: #0000FF;">,</span><span style="color: #000000;">12</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--5</span>
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<span style="color: #000000;">tk_sub</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkOp</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Op_subtract"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"-"</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">BINARY</span><span style="color: #0000FF;">,</span><span style="color: #000000;">12</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--6</span>
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<span style="color: #000000;">tk_neg</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkName</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Op_negate"</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">UNARY</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">14</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--7</span>
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<span style="color: #000000;">tk_not</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkOp</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Op_not"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"!"</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">UNARY</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">14</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--8</span>
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<span style="color: #000000;">tk_lt</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkOp</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Op_less"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"<"</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">BINARY</span><span style="color: #0000FF;">,</span><span style="color: #000000;">10</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--9</span>
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<span style="color: #000000;">tk_le</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkOp</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Op_lessequal"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"<="</span><span style="color: #0000FF;">,</span><span style="color: #000000;">BINARY</span><span style="color: #0000FF;">,</span><span style="color: #000000;">10</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--10</span>
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<span style="color: #000000;">tk_gt</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkOp</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Op_greater"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">">"</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">BINARY</span><span style="color: #0000FF;">,</span><span style="color: #000000;">10</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--11</span>
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<span style="color: #000000;">tk_ge</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkOp</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Op_greaterequal"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">">="</span><span style="color: #0000FF;">,</span><span style="color: #000000;">BINARY</span><span style="color: #0000FF;">,</span><span style="color: #000000;">10</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--12</span>
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<span style="color: #000000;">tk_eq</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkOp</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Op_equal"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"=="</span><span style="color: #0000FF;">,</span><span style="color: #000000;">BINARY</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">9</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--13</span>
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<span style="color: #000000;">tk_ne</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkOp</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Op_notequal"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"!="</span><span style="color: #0000FF;">,</span><span style="color: #000000;">BINARY</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">9</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--14</span>
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<span style="color: #000000;">tk_assign</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkOp</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Op_assign"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"="</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">NONE</span><span style="color: #0000FF;">,</span> <span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--15</span>
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<span style="color: #000000;">tk_and</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkOp</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Op_and"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"&&"</span><span style="color: #0000FF;">,</span><span style="color: #000000;">BINARY</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">5</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--16</span>
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<span style="color: #000000;">tk_or</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkOp</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Op_or"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"||"</span><span style="color: #0000FF;">,</span><span style="color: #000000;">BINARY</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">4</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--17</span>
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<span style="color: #000000;">tk_if</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkKw</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Keyword_if"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"if"</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--18</span>
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<span style="color: #000000;">tk_else</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkKw</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Keyword_else"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"else"</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--19</span>
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<span style="color: #000000;">tk_while</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkKw</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Keyword_while"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"while"</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--20</span>
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<span style="color: #000000;">tk_print</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkKw</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Keyword_print"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"print"</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--21</span>
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<span style="color: #000000;">tk_putc</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkKw</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Keyword_putc"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"putc"</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--22</span>
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<span style="color: #000000;">tk_LeftParen</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkOp</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"LeftParen"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"("</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">NONE</span><span style="color: #0000FF;">,</span> <span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--23</span>
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<span style="color: #000000;">tk_RightParen</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkOp</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"RightParen"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">")"</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">NONE</span><span style="color: #0000FF;">,</span> <span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--24</span>
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<span style="color: #000000;">tk_LeftBrace</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkOp</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"LeftBrace"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"{"</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">NONE</span><span style="color: #0000FF;">,</span> <span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--25</span>
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<span style="color: #000000;">tk_RightBrace</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkOp</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"RightBrace"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"}"</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">NONE</span><span style="color: #0000FF;">,</span> <span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--26</span>
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<span style="color: #000000;">tk_Semicolon</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkOp</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Semicolon"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">";"</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">NONE</span><span style="color: #0000FF;">,</span> <span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--27</span>
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<span style="color: #000000;">tk_Comma</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkOp</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Comma"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">","</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">NONE</span><span style="color: #0000FF;">,</span> <span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--28</span>
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<span style="color: #000000;">tk_Identifier</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkName</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Identifier"</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--29</span>
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<span style="color: #000000;">tk_Integer</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkName</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Integer"</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--30</span>
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<span style="color: #000000;">tk_String</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkName</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"String"</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--31</span>
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<span style="color: #000000;">tk_Sequence</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkName</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Sequence"</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--32</span>
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<span style="color: #000000;">tk_Prints</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkName</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"tk_Prints"</span><span style="color: #0000FF;">),</span> <span style="color: #000080;font-style:italic;">--33</span>
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<span style="color: #000000;">tk_Printi</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tkName</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"tk_Printi"</span><span style="color: #0000FF;">)</span> <span style="color: #000080;font-style:italic;">--34</span>
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<span style="color: #008080;">global</span> <span style="color: #004080;">integer</span> <span style="color: #000000;">input_file</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">STDIN</span><span style="color: #0000FF;">,</span>
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<span style="color: #000000;">output_file</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">STDOUT</span>
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<span style="color: #008080;">type</span> <span style="color: #000000;">strint</span><span style="color: #0000FF;">(</span><span style="color: #004080;">object</span> <span style="color: #000000;">o</span><span style="color: #0000FF;">)</span>
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<span style="color: #008080;">return</span> <span style="color: #004080;">string</span><span style="color: #0000FF;">(</span><span style="color: #000000;">o</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">or</span> <span style="color: #004080;">integer</span><span style="color: #0000FF;">(</span><span style="color: #000000;">o</span><span style="color: #0000FF;">)</span>
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<span style="color: #008080;">end</span> <span style="color: #008080;">type</span>
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<span style="color: #008080;">global</span> <span style="color: #000000;">strint</span> <span style="color: #000000;">tok_line</span><span style="color: #0000FF;">,</span> <span style="color: #000080;font-style:italic;">-- save of line/col at the start of</span>
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<span style="color: #000000;">tok_col</span> <span style="color: #000080;font-style:italic;">-- token/comment, for result/errors</span>
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<span style="color: #008080;">global</span> <span style="color: #004080;">object</span> <span style="color: #000000;">oneline</span> <span style="color: #0000FF;">=</span> <span style="color: #008000;">""</span>
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<span style="color: #008080;">constant</span> <span style="color: #000000;">errfmt</span> <span style="color: #0000FF;">=</span> <span style="color: #008000;">"Line %s column %s:\n%s%s"</span>
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<span style="color: #008080;">function</span> <span style="color: #000000;">errline</span><span style="color: #0000FF;">()</span>
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<span style="color: #000000;">oneline</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">substitute</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">trim</span><span style="color: #0000FF;">(</span><span style="color: #000000;">oneline</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"\r\n"</span><span style="color: #0000FF;">),</span><span style="color: #008000;">'\t'</span><span style="color: #0000FF;">,</span><span style="color: #008000;">' '</span><span style="color: #0000FF;">)</span>
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<span style="color: #004080;">string</span> <span style="color: #000000;">padding</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">repeat</span><span style="color: #0000FF;">(</span><span style="color: #008000;">' '</span><span style="color: #0000FF;">,</span><span style="color: #000000;">tok_col</span><span style="color: #0000FF;">)</span>
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<span style="color: #008080;">return</span> <span style="color: #7060A8;">sprintf</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"%s\n%s^ "</span><span style="color: #0000FF;">,{</span><span style="color: #000000;">oneline</span><span style="color: #0000FF;">,</span><span style="color: #000000;">padding</span><span style="color: #0000FF;">})</span>
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<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
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<span style="color: #008080;">global</span> <span style="color: #008080;">procedure</span> <span style="color: #000000;">error</span><span style="color: #0000FF;">(</span><span style="color: #004080;">sequence</span> <span style="color: #000000;">msg</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">sequence</span> <span style="color: #000000;">args</span><span style="color: #0000FF;">={})</span>
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<span style="color: #008080;">if</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">args</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">then</span>
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<span style="color: #000000;">msg</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">sprintf</span><span style="color: #0000FF;">(</span><span style="color: #000000;">msg</span><span style="color: #0000FF;">,</span><span style="color: #000000;">args</span><span style="color: #0000FF;">)</span>
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<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
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<span style="color: #004080;">string</span> <span style="color: #000000;">el</span> <span style="color: #0000FF;">=</span> <span style="color: #008080;">iff</span><span style="color: #0000FF;">(</span><span style="color: #004080;">atom</span><span style="color: #0000FF;">(</span><span style="color: #000000;">oneline</span><span style="color: #0000FF;">)?</span><span style="color: #008000;">""</span><span style="color: #0000FF;">:</span><span style="color: #000000;">errline</span><span style="color: #0000FF;">())</span>
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<span style="color: #008080;">if</span> <span style="color: #004080;">integer</span><span style="color: #0000FF;">(</span><span style="color: #000000;">tok_line</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">then</span> <span style="color: #000000;">tok_line</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">sprintf</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"%d"</span><span style="color: #0000FF;">,</span><span style="color: #000000;">tok_line</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
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<span style="color: #008080;">if</span> <span style="color: #004080;">integer</span><span style="color: #0000FF;">(</span><span style="color: #000000;">tok_col</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">then</span> <span style="color: #000000;">tok_col</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">sprintf</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"%d"</span><span style="color: #0000FF;">,</span><span style="color: #000000;">tok_col</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
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<span style="color: #7060A8;">printf</span><span style="color: #0000FF;">(</span><span style="color: #000000;">STDOUT</span><span style="color: #0000FF;">,</span><span style="color: #000000;">errfmt</span><span style="color: #0000FF;">,{</span><span style="color: #000000;">tok_line</span><span style="color: #0000FF;">,</span><span style="color: #000000;">tok_col</span><span style="color: #0000FF;">,</span><span style="color: #000000;">el</span><span style="color: #0000FF;">,</span><span style="color: #000000;">msg</span><span style="color: #0000FF;">})</span>
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<span style="color: #0000FF;">{}</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">wait_key</span><span style="color: #0000FF;">()</span>
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<span style="color: #7060A8;">abort</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">)</span>
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<span style="color: #008080;">end</span> <span style="color: #008080;">procedure</span>
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<span style="color: #008080;">include</span> <span style="color: #000000;">js_io</span><span style="color: #0000FF;">.</span><span style="color: #000000;">e</span> <span style="color: #000080;font-style:italic;">-- fake file i/o for running under pwa/p2js</span>
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<span style="color: #008080;">function</span> <span style="color: #000000;">open_file</span><span style="color: #0000FF;">(</span><span style="color: #004080;">string</span> <span style="color: #000000;">file_name</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">string</span> <span style="color: #000000;">mode</span><span style="color: #0000FF;">)</span>
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<span style="color: #004080;">integer</span> <span style="color: #000000;">fn</span> <span style="color: #0000FF;">=</span> <span style="color: #008080;">iff</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">platform</span><span style="color: #0000FF;">()=</span><span style="color: #004600;">JS</span><span style="color: #0000FF;">?</span><span style="color: #000000;">js_open</span><span style="color: #0000FF;">(</span><span style="color: #000000;">file_name</span><span style="color: #0000FF;">)</span>
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<span style="color: #0000FF;">:</span><span style="color: #7060A8;">open</span><span style="color: #0000FF;">(</span><span style="color: #000000;">file_name</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">mode</span><span style="color: #0000FF;">))</span>
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<span style="color: #008080;">if</span> <span style="color: #000000;">fn</span><span style="color: #0000FF;"><=</span><span style="color: #000000;">0</span> <span style="color: #008080;">then</span>
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<span style="color: #7060A8;">printf</span><span style="color: #0000FF;">(</span><span style="color: #000000;">STDOUT</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"Could not open %s"</span><span style="color: #0000FF;">,</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">file_name</span><span style="color: #0000FF;">})</span>
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<span style="color: #0000FF;">{}</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">wait_key</span><span style="color: #0000FF;">()</span>
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<span style="color: #7060A8;">abort</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">)</span>
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<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
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<span style="color: #008080;">return</span> <span style="color: #000000;">fn</span>
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<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
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<span style="color: #008080;">global</span> <span style="color: #008080;">procedure</span> <span style="color: #000000;">open_files</span><span style="color: #0000FF;">(</span><span style="color: #004080;">sequence</span> <span style="color: #000000;">cl</span><span style="color: #0000FF;">)</span>
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<span style="color: #008080;">if</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cl</span><span style="color: #0000FF;">)></span><span style="color: #000000;">2</span> <span style="color: #008080;">then</span>
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<span style="color: #000000;">input_file</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">open_file</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cl</span><span style="color: #0000FF;">[</span><span style="color: #000000;">3</span><span style="color: #0000FF;">],</span><span style="color: #008000;">"r"</span><span style="color: #0000FF;">)</span>
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<span style="color: #008080;">if</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cl</span><span style="color: #0000FF;">)></span><span style="color: #000000;">3</span> <span style="color: #008080;">then</span>
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<span style="color: #000000;">output_file</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">open_file</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cl</span><span style="color: #0000FF;">[</span><span style="color: #000000;">4</span><span style="color: #0000FF;">],</span><span style="color: #008000;">"w"</span><span style="color: #0000FF;">)</span>
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<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
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<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
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<span style="color: #008080;">end</span> <span style="color: #008080;">procedure</span>
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<span style="color: #008080;">global</span> <span style="color: #008080;">procedure</span> <span style="color: #000000;">close_files</span><span style="color: #0000FF;">()</span>
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<span style="color: #008080;">if</span> <span style="color: #7060A8;">platform</span><span style="color: #0000FF;">()!=</span><span style="color: #004600;">JS</span> <span style="color: #008080;">then</span>
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<span style="color: #008080;">if</span> <span style="color: #000000;">input_file</span><span style="color: #0000FF;">!=</span><span style="color: #000000;">STDIN</span> <span style="color: #008080;">then</span> <span style="color: #7060A8;">close</span><span style="color: #0000FF;">(</span><span style="color: #000000;">input_file</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
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<span style="color: #008080;">if</span> <span style="color: #000000;">output_file</span><span style="color: #0000FF;">!=</span><span style="color: #000000;">STDOUT</span> <span style="color: #008080;">then</span> <span style="color: #7060A8;">close</span><span style="color: #0000FF;">(</span><span style="color: #000000;">output_file</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
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<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
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<span style="color: #008080;">end</span> <span style="color: #008080;">procedure</span>
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<span style="color: #008080;">global</span> <span style="color: #008080;">function</span> <span style="color: #000000;">enquote</span><span style="color: #0000FF;">(</span><span style="color: #004080;">string</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">)</span>
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<span style="color: #008080;">return</span> <span style="color: #7060A8;">sprintf</span><span style="color: #0000FF;">(</span><span style="color: #008000;">`"%s"`</span><span style="color: #0000FF;">,</span><span style="color: #7060A8;">substitute</span><span style="color: #0000FF;">(</span><span style="color: #000000;">s</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"\n"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"\\n"</span><span style="color: #0000FF;">))</span>
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<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
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<span style="color: #008080;">global</span> <span style="color: #008080;">function</span> <span style="color: #000000;">unquote</span><span style="color: #0000FF;">(</span><span style="color: #004080;">string</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">)</span>
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<span style="color: #008080;">if</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">1</span><span style="color: #0000FF;">]!=</span><span style="color: #008000;">'\"'</span> <span style="color: #008080;">then</span> <span style="color: #0000FF;">?</span><span style="color: #000000;">9</span><span style="color: #0000FF;">/</span><span style="color: #000000;">0</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
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<span style="color: #008080;">if</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">[$]!=</span><span style="color: #008000;">'\"'</span> <span style="color: #008080;">then</span> <span style="color: #0000FF;">?</span><span style="color: #000000;">9</span><span style="color: #0000FF;">/</span><span style="color: #000000;">0</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
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<span style="color: #000000;">s</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">substitute</span><span style="color: #0000FF;">(</span><span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">2</span><span style="color: #0000FF;">..-</span><span style="color: #000000;">2</span><span style="color: #0000FF;">],</span><span style="color: #008000;">"\\n"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"\n"</span><span style="color: #0000FF;">)</span>
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<span style="color: #008080;">return</span> <span style="color: #000000;">s</span>
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<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
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<!--
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