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added primop functions __isBool, __isString, __isInt

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This commit is contained in:
Marc Weber 2009-02-05 19:35:40 +00:00
parent 1bb0f1e84b
commit 1407a1ec99
1 changed files with 25 additions and 0 deletions
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25
src/libexpr/primops.cc
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@ -125,6 +125,27 @@ static Expr prim_isFunction(EvalState & state, const ATermVector & args)
return makeBool(matchFunction(e, pat, body, pos));
}
/* Determine whether the argument is an Int. */
static Expr prim_isInt(EvalState & state, const ATermVector & args)
{
int i;
return makeBool(matchInt(evalExpr(state, args[0]), i));
}
/* Determine whether the argument is an String. */
static Expr prim_isString(EvalState & state, const ATermVector & args)
{
string s;
PathSet l;
return makeBool(matchStr(evalExpr(state, args[0]), s, l));
}
/* Determine whether the argument is an Bool. */
static Expr prim_isBool(EvalState & state, const ATermVector & args)
{
ATermBool b;
return makeBool(matchBool(evalExpr(state, args[0]), b));
}
static Expr prim_genericClosure(EvalState & state, const ATermVector & args)
{
@ -986,6 +1007,9 @@ void EvalState::addPrimOps()
addPrimOp("import", 1, prim_import);
addPrimOp("isNull", 1, prim_isNull);
addPrimOp("__isFunction", 1, prim_isFunction);
addPrimOp("__isString", 1, prim_isString);
addPrimOp("__isInt", 1, prim_isInt);
addPrimOp("__isBool", 1, prim_isBool);
addPrimOp("__genericClosure", 1, prim_genericClosure);
addPrimOp("abort", 1, prim_abort);
addPrimOp("throw", 1, prim_throw);
@ -993,6 +1017,7 @@ void EvalState::addPrimOps()
addPrimOp("__getEnv", 1, prim_getEnv);
addPrimOp("__trace", 2, prim_trace);
// Expr <-> String
addPrimOp("__exprToString", 1, prim_exprToString);
addPrimOp("__stringToExpr", 1, prim_stringToExpr);