func makeLetFun(node *parser.CallNode) ast.Expr {
bindings := makeBindings(node.Args[0].(*parser.VectorNode), token.DEFINE)
body := append(bindings, wrapExprsWithStmt(EvalExprs(node.Args[1:]))...)
body[len(body)-1] = makeReturnStmt(h.E(body[len(body)-1].(*ast.ExprStmt).X))
fieldList := makeFieldList([]*ast.Field{makeField(nil, anyType)})
typ := makeFuncType(fieldList, nil)
fn := makeFuncLit(typ, makeBlockStmt(body))
return makeFuncCall(fn, h.EmptyE())
}
func makeIfStmtFunc(node *parser.CallNode) ast.Expr {
var elseBody ast.Stmt
if len(node.Args) > 2 {
elseBody = makeBlockStmt(h.S(makeReturnStmt(h.E(EvalExpr(node.Args[2])))))
} else {
elseBody = makeBlockStmt(h.S(makeReturnStmt(h.E(ast.NewIdent("nil")))))
}
cond := EvalExpr(node.Args[0])
ifBody := makeBlockStmt(h.S(makeReturnStmt(h.E(EvalExpr(node.Args[1])))))
ifStmt := makeIfStmt(cond, ifBody, elseBody)
fnBody := makeBlockStmt(h.S(ifStmt))
returnList := makeFieldList([]*ast.Field{makeField(nil, anyType)})
fnType := makeFuncType(returnList, nil)
fn := makeFuncLit(fnType, fnBody)
return makeFuncCall(fn, h.EmptyE())
}