Basic parsing

assembler/go.mod

@@ -0,0 +1,5 @@
+module github.com/firestuff/subcoding/assembler
+
+go 1.17
+
+require gopkg.in/yaml.v2 v2.4.0 // indirect

assembler/go.sum

@@ -0,0 +1,3 @@
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
+gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=

assembler/parse.go

@@ -0,0 +1,25 @@
+package assembler
+
+import "gopkg.in/yaml.v2"
+
+type Program struct {
+	Functions []*Function `yaml:"functions"`
+}
+
+type Function []*Operation
+type Operation []string
+
+func NewProgramFromBytes(in []byte) (*Program, error) {
+	prog := &Program{}
+
+	err := yaml.UnmarshalStrict(in, &prog)
+	if err != nil {
+		return nil, err
+	}
+
+	return prog, nil
+}
+
+func NewProgramFromString(in string) (*Program, error) {
+	return NewProgramFromBytes([]byte(in))
+}

assembler/parse_test.go

@@ -0,0 +1,20 @@
+package assembler
+
+import "testing"
+
+func TestSimple(t *testing.T) {
+	prog, err := NewProgramFromString(`
+functions:
+- - [add, f0, 1]
+  - [call, +1]
+  - [ltu, f0, 3]
+  - [jmpt, -3]
+
+- - [add, g0, 1]
+`)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	t.Logf("%+v", prog)
+}

assembler/test.yaml

@@ -0,0 +1,7 @@
+functions:
+- - [add, f0, 1]
+  - [call, +1]
+  - [ltu, f0, 3]
+  - [jmpt, -3]
+
+- - [add, g0, 1]