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import std.stdio;
import std.string;
import std.conv;
import std.variant;
import std.typecons;
import std.container : SList;
import src.stack;
static import definition = src.definition;
static import primitives = src.primitives.eval;
template process(T)
if ( is(T == int) || is(T == bool) ) {
void process(T value) {
try {
if ( !primitives.evaluate(value) ) {
stack.push(value);
}
}
catch (Exception ex) {
writeln("Error: ", ex.msg);
}
}
}
void process(string word) {
try {
if ( !primitives.evaluate(word) ) {
if ( word in definition.words ) {
foreach ( token; definition.words[word] ) {
process(token);
}
} else {
stack.push(word);
}
}
}
catch (Exception ex) {
writeln("Error: ", ex.msg);
}
}
void process(Token token) {
token.visit!(
(int value) => process(value),
(bool value) => process(value),
(string word ) => process(word)
);
}
void main() {
while ( !stdin.eof ) {
foreach ( token; stdin.readln.split ) {
if ( token.isNumeric ) {
auto value = parse!int(token);
if ( !definition.handle(value) ) {
process(value);
}
} else {
if ( !definition.handle(token) ) {
process(token);
}
}
}
}
}
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