func TestParse_internal_newlines(t *testing.T) {
// newlines in a function call are invisible to the parser
tmpdir, cleanup := testutils.Mktemp()
defer cleanup()
script := `
main {
x(
a.b
)
}
`
fn := testutils.Mkfile(tmpdir, "newlines.fubsy", script)
ast, err := Parse(fn)
assert.Equal(t, 0, len(err))
expect := &ASTRoot{
children: []ASTNode{
&ASTPhase{
name: "main",
children: []ASTNode{
&ASTFunctionCall{
function: &ASTName{name: "x"},
args: []ASTExpression{
&ASTSelection{
container: &ASTName{name: "a"},
member: "b",
}}}},
}}}
assertASTEqual(t, expect, ast)
}
func TestParse_valid_sequence(t *testing.T) {
tmpdir, cleanup := testutils.Mktemp()
defer cleanup()
// sequence of top-level children
script := `
main {
"boo"
}
plugin foo {{{
o'malley & friends
}}}
blob {
"meep"
}`
fn := testutils.Mkfile(tmpdir, "valid_2.fubsy", script)
ast, errs := Parse(fn)
testutils.NoErrors(t, errs)
expect := &ASTRoot{children: []ASTNode{
&ASTPhase{
name: "main",
children: []ASTNode{&ASTString{value: "boo"}}},
&ASTInline{
lang: "foo", content: "o'malley & friends"},
&ASTPhase{
name: "blob",
children: []ASTNode{&ASTString{value: "meep"}}},
}}
assertASTEqual(t, expect, ast)
}
// this one tries to exercise many token types and grammar rules
func TestParse_omnibus_1(t *testing.T) {
tmpdir, cleanup := testutils.Mktemp()
defer cleanup()
script := `
# start with a comment
import foo
import foo.bar.baz
# blank lines are OK!
plugin funky {{{
any ol' crap! "bring it on,
dude" ...
}}}
main {
a =("foo") + b
c=(d.e) ()
x.y.z
<
lib1/*.c
lib2/**/*.c
>
}
`
fn := testutils.Mkfile(tmpdir, "omnibus_1.fubsy", script)
ast, err := Parse(fn)
assert.Equal(t, 0, len(err))
expect :=
`ASTRoot {
ASTImport[foo]
ASTImport[foo.bar.baz]
ASTInline[funky] {{{
any ol' crap! "bring it on,
dude" ...
}}}
ASTPhase[main] {
ASTAssignment[a]
ASTAdd
op1:
ASTString[foo]
op2:
ASTName[b]
ASTAssignment[c]
ASTFunctionCall[d.e] (0 args)
ASTSelection[x.y: z]
ASTFileFinder[lib1/*.c lib2/**/*.c]
}
}
`
var actual_ bytes.Buffer
ast.Dump(&actual_, "")
actual := actual_.String()
if expect != actual {
t.Errorf("expected AST:\n%s\nbut got:\n%s", expect, actual)
}
}
func TestParse_omnibus_2(t *testing.T) {
tmpdir, cleanup := testutils.Mktemp()
defer cleanup()
script := `
main {
headers = <*.h>
a + b : <*.c> + headers {
x = a
"cc $x"
f(a, b)
}
}
`
fn := testutils.Mkfile(tmpdir, "omnibus_2.fubsy", script)
ast, err := Parse(fn)
assert.Equal(t, 0, len(err))
expect :=
`ASTRoot {
ASTPhase[main] {
ASTAssignment[headers]
ASTFileFinder[*.h]
ASTBuildRule {
targets:
ASTAdd
op1:
ASTName[a]
op2:
ASTName[b]
sources:
ASTAdd
op1:
ASTFileFinder[*.c]
op2:
ASTName[headers]
actions:
ASTAssignment[x]
ASTName[a]
ASTString[cc $x]
ASTFunctionCall[f] (2 args)
ASTName[a]
ASTName[b]
}
}
}
`
var actual_ bytes.Buffer
ast.Dump(&actual_, "")
actual := actual_.String()
if expect != actual {
t.Errorf("expected AST:\n%s\nbut got:\n%s", expect, actual)
}
}
func TestParse_invalid_1(t *testing.T) {
tmpdir, cleanup := testutils.Mktemp()
defer cleanup()
// invalid: no closing rbracket
script := `
main{
"borf"
`
fn := testutils.Mkfile(tmpdir, "invalid_1.fubsy", script)
_, err := Parse(fn)
expect := fn + ":4: syntax error (near EOF)"
assertOneError(t, expect, err)
}
func TestParse_invalid_2(t *testing.T) {
tmpdir, cleanup := testutils.Mktemp()
defer cleanup()
// invalid: bad token
script := `
main{
*&! "whizz"
}`
fn := testutils.Mkfile(tmpdir, "invalid_2.fubsy", script)
_, err := Parse(fn)
expect := fn + ":3: syntax error (near *&!)"
assertOneError(t, expect, err)
reset()
}
func TestParse_valid_1(t *testing.T) {
tmpdir, cleanup := testutils.Mktemp()
defer cleanup()
// dead simple: a single top-level element
script := `
main {
<meep>
}
`
fn := testutils.Mkfile(tmpdir, "valid_1.fubsy", script)
expect := &ASTRoot{children: []ASTNode{
&ASTPhase{name: "main", children: []ASTNode{
&ASTFileFinder{patterns: []string{"meep"}}}}}}
ast, err := Parse(fn)
assert.Equal(t, 0, len(err))
assertASTEqual(t, expect, ast)
eofloc := ast.EOF().Location()
assert.True(t, strings.HasSuffix(eofloc.ErrorPrefix(), "valid_1.fubsy:6: "))
}