From 6449d4762a046a20a17e6e32ae4c6c3bc27ae4e3 Mon Sep 17 00:00:00 2001
From: Ian Gulliver <git@flamingcow.io>
Date: Tue, 16 Nov 2021 21:08:46 -1000
Subject: [PATCH] Basic parsing

---
 assembler/go.mod        |  5 +++++
 assembler/go.sum        |  3 +++
 assembler/parse.go      | 25 +++++++++++++++++++++++++
 assembler/parse_test.go | 20 ++++++++++++++++++++
 assembler/test.yaml     |  7 +++++++
 5 files changed, 60 insertions(+)
 create mode 100644 assembler/go.mod
 create mode 100644 assembler/go.sum
 create mode 100644 assembler/parse.go
 create mode 100644 assembler/parse_test.go
 create mode 100644 assembler/test.yaml

diff --git a/assembler/go.mod b/assembler/go.mod
new file mode 100644
index 0000000..2e175da
--- /dev/null
+++ b/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
diff --git a/assembler/go.sum b/assembler/go.sum
new file mode 100644
index 0000000..7534661
--- /dev/null
+++ b/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=
diff --git a/assembler/parse.go b/assembler/parse.go
new file mode 100644
index 0000000..329ed3b
--- /dev/null
+++ b/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))
+}
diff --git a/assembler/parse_test.go b/assembler/parse_test.go
new file mode 100644
index 0000000..3d7eb00
--- /dev/null
+++ b/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)
+}
diff --git a/assembler/test.yaml b/assembler/test.yaml
new file mode 100644
index 0000000..e2735ce
--- /dev/null
+++ b/assembler/test.yaml
@@ -0,0 +1,7 @@
+functions:
+- - [add, f0, 1]
+  - [call, +1]
+  - [ltu, f0, 3]
+  - [jmpt, -3]
+
+- - [add, g0, 1]