Roland Conybeare
aecabbb144
git-subtree-dir: xo-expression git-subtree-mainline:d0f5ccc1cegit-subtree-split:5ac3c03a0c
45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
/* @file IfExpr.cpp */
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#include "IfExpr.hpp"
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#include "xo/indentlog/print/vector.hpp"
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namespace xo {
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namespace ast {
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rp<IfExpr>
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IfExpr::make(const rp<Expression> & test,
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const rp<Expression> & when_true,
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const rp<Expression> & when_false)
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{
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/** TODO: verify test returns _boolean_ type **/
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if (when_true->valuetype() != when_false->valuetype()) {
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throw std::runtime_error
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(tostr("IfExpr::make:"
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" types {T1,T2} found for branches of if-expr"
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" where equal types expected",
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xtag("T1", when_true->valuetype()->canonical_name()),
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xtag("T2", when_false->valuetype()->canonical_name())));
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}
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/* arbitrary choice here */
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auto ifexpr_type = when_true->valuetype();
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return new IfExpr(ifexpr_type,
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test,
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when_true,
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when_false);
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} /*make*/
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void
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IfExpr::display(std::ostream & os) const {
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os << "<IfExpr"
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<< xtag("test", test_)
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<< xtag("when_true", when_true_)
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<< xtag("when_false", when_false_)
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<< ">";
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} /*display*/
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} /*namespace ast*/
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} /*namespace xo*/
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/* end IfExpr.cpp */
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