func TransFile(w io.Writer, fname, expr string) {
f := token.NewFile(fname, expr, 1)
n := parser.ParseFile(f, expr)
if f.NumErrors() > 0 {
f.PrintErrors()
return
}
t := &translator{out: w, file: f, scope: n.Scope}
t.topComment()
/* includes will/might eventually reflect the imports from Calc. It's
* possible that stdio might be an auto-include if print remains a
* built-in function, which is likely won't */
t.includes() /* temporary */
t.transFuncSigs(n)
t.transpile(n, false)
if f.NumErrors() > 0 {
f.PrintErrors()
}
if t.scope.Lookup("main") == nil {
fmt.Println("No function \"main\" found!")
}
return
}
func TestScannerInit(t *testing.T) {
var tests = []struct {
expr string
res bool
}{
{"", true},
{"(+ 1 2)", true},
}
for _, t := range tests {
s := new(scanner.Scanner)
f := token.NewFile("", t.expr)
s.Init(f, t.expr)
}
}
func EvalFile(fname, expr string) interface{} {
f := token.NewFile(fname, expr, 1)
n := parser.ParseFile(f, expr)
if f.NumErrors() > 0 {
f.PrintErrors()
return nil
}
e := &evaluator{file: f, scope: n.Scope}
res := e.eval(n)
if f.NumErrors() > 0 {
f.PrintErrors()
return nil
}
return res
}
func ParseExpr(expr string) ast.Node {
f := token.NewFile("", expr, 1)
return ParseFile(f, expr)
}
func TestScannerScan(t *testing.T) {
var tests = []struct {
expr string
toks []token.Token
poss []token.Pos
lits []string
}{
{"123", []token.Token{token.NUMBER}, []token.Pos{0}, []string{"123"}},
{"-123", []token.Token{token.NUMBER}, []token.Pos{0}, []string{"-123"}},
{"a", []token.Token{token.IDENT}, []token.Pos{0}, []string{"a"}},
{
"123 456",
[]token.Token{token.NUMBER, token.NUMBER},
[]token.Pos{0, 4}, []string{"123", "456"},
},
{
"(+123 -456)",
[]token.Token{token.LPAREN, token.ADD, token.NUMBER, token.NUMBER,
token.RPAREN},
[]token.Pos{0, 1, 2, 6, 10}, []string{"(", "+", "123", "-456", ")"},
},
{
"(set A_Variable 123)",
[]token.Token{token.LPAREN, token.SET, token.IDENT, token.NUMBER,
token.RPAREN},
[]token.Pos{0, 1, 5, 16, 19}, []string{"(", "set", "A_Variable", "123",
")"},
},
{
"; A comment",
[]token.Token{token.COMMENT},
[]token.Pos{0},
[]string{"; A comment"},
},
{
"234;comment",
[]token.Token{token.NUMBER, token.COMMENT},
[]token.Pos{0, 3},
[]string{"234", ";comment"},
},
{
";comment\n234",
[]token.Token{token.COMMENT, token.NUMBER},
[]token.Pos{0, 9},
[]string{";comment", "234"},
},
{
"\"a string\"",
[]token.Token{token.STRING},
[]token.Pos{0},
[]string{"\"a string\""},
},
{
"\"a string\"\"a string\"",
[]token.Token{token.STRING, token.STRING},
[]token.Pos{0, 10},
[]string{"\"a string\"", "\"a string\""},
},
}
for x, test := range tests {
s := new(scanner.Scanner)
f := token.NewFile("", test.expr)
s.Init(f, test.expr)
for i := 0; i < len(test.toks); i++ {
tok, pos, lit := s.Scan()
if tok != test.toks[i] || pos != test.poss[i] || lit != test.lits[i] {
t.Log("Test:", x)
t.Log("Expected:", test.toks[i], test.poss[i], test.lits[i])
t.Fatal("Got:", tok, pos, lit)
}
}
}
}