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|
package parser
import (
"strings"
"testing"
"usebox.net/lang/ast"
"usebox.net/lang/errors"
"usebox.net/lang/tokenizer"
)
func parse(input string) ([]ast.Expr, error) {
tr := tokenizer.NewTokenizer("-", strings.NewReader(input))
toks, err := tr.Scan()
if err != nil {
return nil, err
}
p := NewParser(nil)
return p.Parse(toks)
}
func expectError(t *testing.T, input string, code errors.ErrCode) {
_, errs := parse(input)
if errs == nil {
t.Errorf("expected error and it didn't happen (input: %s)", input)
}
el, ok := errs.(errors.ErrorList)
if !ok {
t.Errorf("error list expected (input: %s)", input)
} else if len(el.Errors) == 0 {
t.Errorf("error list is empty (input: %s)", input)
} else {
if first, ok := el.Errors[0].(errors.Error); !ok {
t.Errorf("error in error list not an Error (input: %s)", input)
} else {
if first.Code != code {
t.Errorf("error %d expected, got %d -> %s (input: %s)", code, first.Code, first, input)
}
}
}
}
func TestErrorFailedNumeric(t *testing.T) {
expectError(t, "var n number = 18446744073709551616;", errors.FailedNumeric)
}
func TestErrorExpectedRParen(t *testing.T) {
expectError(t, "var n number = (1 + 2 ;", errors.ExpectedRParen)
}
func TestErrorExpectedExpr(t *testing.T) {
expectError(t, ";", errors.ExpectedExpr)
}
func TestErrorExpectedVarName(t *testing.T) {
expectError(t, "var number = 1;", errors.ExpectedIdent)
expectError(t, "const false;", errors.ExpectedIdent)
}
func TestErrorExpectedType(t *testing.T) {
expectError(t, "var n = 1;", errors.ExpectedType)
expectError(t, "const n = 1;", errors.ExpectedType)
expectError(t, "def fn(n) { }", errors.ExpectedType)
expectError(t, "def fn() { }\nvar a number = fn();", errors.TypeMismatch)
}
func TestErrorDeclareUndefined(t *testing.T) {
expectError(t, "var a number = a;", errors.UndefinedIdent)
}
func TestErrorExpectedSemiColon(t *testing.T) {
expectError(t, "var n number = 1", errors.ExpectedSemicolon)
expectError(t, "1 + 1", errors.ExpectedSemicolon)
}
func TestErrorExpectedFunc(t *testing.T) {
expectError(t, "def ;", errors.ExpectedIdent)
expectError(t, "def fn;", errors.ExpectedLParen)
expectError(t, "def fn(number);", errors.ExpectedIdent)
expectError(t, "def fn(a number, number);", errors.ExpectedIdent)
expectError(t, "def fn(a, b);", errors.ExpectedType)
expectError(t, "def fn(a bool, b);", errors.ExpectedType)
expectError(t, "def fn() id;", errors.ExpectedType)
expectError(t, "def fn(a number) id;", errors.ExpectedType)
expectError(t, "def fn()", errors.ExpectedType)
expectError(t, "def fn() {", errors.ExpectedRBrace)
expectError(t, "def fn() number {", errors.ExpectedRBrace)
expectError(t, "fn(;", errors.UndefinedIdent)
expectError(t, "fn(0;", errors.UndefinedIdent)
expectError(t, "fn()", errors.UndefinedIdent)
expectError(t, "def fn() bool { return 1; }", errors.TypeMismatch)
expectError(t, "def fn() { }\ndef fn() { }", errors.AlreadyDeclared)
}
func TestErrorReturn(t *testing.T) {
expectError(t, "return", errors.InvalidOperation)
expectError(t, "return true", errors.InvalidOperation)
expectError(t, "def fn() { return }", errors.ExpectedExpr)
expectError(t, "def fn() { return true }", errors.ExpectedSemicolon)
expectError(t, `
def fn() [5]number {
var local [5]number;
return local;
}
`, errors.InvalidOperation)
expectError(t, `
def A { var p number; }
def fn() A {
var local A;
return local;
}
`, errors.InvalidOperation)
expectError(t, `
def A { var p number; }
var g A;
def fn() A {
var local A;
local = g;
return local;
}
"OK";
`, errors.TypeMismatch)
expectError(t, `
var g [3]bool;
def fn() [3]bool {
var local [3]bool;
local = g;
return local;
}
"OK";
`, errors.TypeMismatch)
expectError(t, `
const a [3]number = [1, 2, 3];
var b [3]number = a;
`, errors.TypeMismatch)
expectError(t, `
const a [3]number = [1, 2, 3];
var b [3]number;
var c [3]number = b;
c = a;
`, errors.TypeMismatch)
}
func TestErrorExpectedAssign(t *testing.T) {
expectError(t, "a = ", errors.UndefinedIdent)
expectError(t, "1 = 1;", errors.InvalidTarget)
expectError(t, "const a number = 0; a = 1;", errors.AssignConst)
expectError(t, "const a [2]number = [0, 1]; a[0] = 1;", errors.AssignConst)
expectError(t, `
def fn() { }
const a func () = fn;
a = fn;
`, errors.AssignConst)
}
func TestErrorLoops(t *testing.T) {
expectError(t, "continue;", errors.InvalidOperation)
expectError(t, "break;", errors.InvalidOperation)
}
func TestErrorArray(t *testing.T) {
expectError(t, "var a [false]number;", errors.InvalidValue)
expectError(t, "var a [1]number = 1;", errors.TypeMismatch)
expectError(t, "var a []number = [1, 2, 3];", errors.ExpectedExpr)
expectError(t, "var a [2]number; var b [5]number = a;", errors.TypeMismatch)
}
func TestErrorExprList(t *testing.T) {
expectError(t, "var a number = [1];", errors.InvalidValue)
expectError(t, "var a [1]number = [];", errors.InvalidValue)
expectError(t, "var a [2]number = [1, false];", errors.TypeMismatch)
expectError(t, "var a [2]number = [1, 2, 3];", errors.InvalidValue)
expectError(t, "var a [1]number = [false];", errors.TypeMismatch)
expectError(t, "const a number = [1];", errors.InvalidValue)
expectError(t, "const a [1]number = [];", errors.InvalidValue)
expectError(t, "const a [2]number = [1, false];", errors.TypeMismatch)
expectError(t, "const a [2]number = [1, 2, 3];", errors.InvalidValue)
expectError(t, "const a [1]number = [false];", errors.TypeMismatch)
}
func TestErrorIndex(t *testing.T) {
expectError(t, "var a [10]number; a[false];", errors.InvalidValue)
expectError(t, "var a [10]number; a[\"bad\"];", errors.InvalidValue)
expectError(t, "var i bool; var a [10]number; a[i];", errors.InvalidValue)
expectError(t, "def fn() { } var a [10]number; a[fn];", errors.InvalidValue)
expectError(t, "def fn() bool { return false; } var a [10]number; a[fn()];", errors.InvalidValue)
expectError(t, "false[0];", errors.NotIndexable)
expectError(t, "10[0];", errors.NotIndexable)
expectError(t, "false[0] = 10;", errors.NotIndexable)
}
func TestErrorFor(t *testing.T) {
expectError(t, "for a { }", errors.UndefinedIdent)
expectError(t, "for a != 0 { }", errors.UndefinedIdent)
expectError(t, "for a in { }", errors.ExpectedExpr)
expectError(t, "for a in a { }", errors.UndefinedIdent)
expectError(t, "var a number; for i in a { }", errors.TypeMismatch)
}
func TestErrorStruct(t *testing.T) {
expectError(t, "def A { }", errors.InvalidValue)
expectError(t, "var a number; a.b;", errors.NotStruct)
expectError(t, "def A { var a number; }\nvar a A; a.1;", errors.ExpectedIdent)
expectError(t, "def A { var a number; }\ndef A { }", errors.AlreadyDeclared)
expectError(t, "def A { var a A; }", errors.RecursiveStruct)
expectError(t, "def A { var a number; }\nvar a A;\na.x;", errors.UndefinedIdent)
expectError(t, "def A { var a number; }\nA.a;", errors.InvalidValue)
expectError(t, "def A { var a number; }\nvar a number; a = A;", errors.InvalidValue)
expectError(t, "def A { var a number; }\nvar a A; var b number = a;", errors.TypeMismatch)
expectError(t, "def A { var a number; }\nvar a A; var b a;", errors.ExpectedType)
expectError(t, `
def A { var a number; }
def B { var a number; }
var a A;
var b B = a;
`, errors.TypeMismatch)
expectError(t, `
def fn() {
def A {
return;
}
}
`, errors.ExpectedDefinition)
expectError(t, `
for {
def A {
break;
}
}
`, errors.ExpectedDefinition)
expectError(t, `
for {
def A {
continue;
}
}
`, errors.ExpectedDefinition)
expectError(t, `
def A {
var p number;
p = 10;
}
`, errors.ExpectedDefinition)
expectError(t, `
def A {
var p number;
println("error");
}
`, errors.ExpectedDefinition)
}
|
