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xo-expression: + Lambda::type_str

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This commit is contained in:
Roland Conybeare 2024-06-17 17:00:16 -04:00
commit b18de1b0ce
2 changed files with 29 additions and 2 deletions
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8
include/xo/expression/Lambda.hpp
View file

@ -23,8 +23,7 @@ namespace xo {
**/
Lambda(const std::string & name,
const std::vector<std::string> & argv,
const ref::rp<Expression> & body)
: Expression(exprtype::lambda), name_{name}, argv_{argv}, body_{body} {}
const ref::rp<Expression> & body);
/** downcast from Expression **/
static ref::brw<Lambda> from(ref::brw<Expression> x) {
@ -32,6 +31,7 @@ namespace xo {
}
const std::string & name() const { return name_; }
const std::string & type_str() const { return type_str_; }
const std::vector<std::string> & argv() const { return argv_; }
const ref::rp<Expression> & body() const { return body_; }
@ -51,6 +51,10 @@ namespace xo {
* so that they can be linked etc.
**/
std::string name_;
/** e.g.
* "double(double,double)" for function of two doubles that returns a double
**/
std::string type_str_;
/** formal argument names **/
std::vector<std::string> argv_;
/** function body **/

23
src/expression/Lambda.cpp
View file

@ -4,7 +4,30 @@
#include "xo/indentlog/print/vector.hpp"
namespace xo {
using std::stringstream;
namespace ast {
Lambda::Lambda(const std::string & name,
const std::vector<std::string> & argv,
const ref::rp<Expression> & body)
: Expression(exprtype::lambda),
name_{name},
argv_{argv},
body_{body}
{
stringstream ss;
ss << "double";
ss << "(";
for (std::size_t i = 0; i < argv.size(); ++i) {
if (i > 0)
ss << ",";
ss << "double";
}
ss << ")";
type_str_ = ss.str();
} /*ctor*/
void
Lambda::display(std::ostream & os) const {
os << "<Lambda"