commit 5ed7349e8ec751cbf2732c67673b8d6b17ea35de
Author: Chris Johns <chris@ter0.net>
Date: Mon, 11 Oct 2021 15:10:18 +0100
Initial commit
Diffstat:
| A | .gitignore | | | 116 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | Makefile | | | 11 | +++++++++++ |
| A | go.mod | | | 3 | +++ |
| A | test.y | | | 3 | +++ |
| A | ycc | | | 0 | |
| A | ycc.go | | | 83 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
6 files changed, 216 insertions(+), 0 deletions(-)
diff --git a/.gitignore b/.gitignore
@@ -0,0 +1,116 @@
+# Created by https://www.toptal.com/developers/gitignore/api/vim,linux,windows,macos,go
+# Edit at https://www.toptal.com/developers/gitignore?templates=vim,linux,windows,macos,go
+
+### Go ###
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+### Go Patch ###
+/vendor/
+/Godeps/
+
+### Linux ###
+*~
+
+# temporary files which can be created if a process still has a handle open of a deleted file
+.fuse_hidden*
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+
+# .nfs files are created when an open file is removed but is still being accessed
+.nfs*
+
+### macOS ###
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+### Vim ###
+# Swap
+[._]*.s[a-v][a-z]
+!*.svg # comment out if you don't need vector files
+[._]*.sw[a-p]
+[._]s[a-rt-v][a-z]
+[._]ss[a-gi-z]
+[._]sw[a-p]
+
+# Session
+Session.vim
+Sessionx.vim
+
+# Temporary
+.netrwhist
+# Auto-generated tag files
+tags
+# Persistent undo
+[._]*.un~
+
+### Windows ###
+# Windows thumbnail cache files
+Thumbs.db
+Thumbs.db:encryptable
+ehthumbs.db
+ehthumbs_vista.db
+
+# Dump file
+*.stackdump
+
+# Folder config file
+[Dd]esktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+# End of https://www.toptal.com/developers/gitignore/api/vim,linux,windows,macos,go
+
diff --git a/Makefile b/Makefile
@@ -0,0 +1,11 @@
+.PHONY: build
+build:
+ go1.17.2 build
+
+.PHONY: run
+run:
+ go1.17.2 run .
+
+.PHONY: fmt
+fmt:
+ go1.17.2 fmt .
diff --git a/go.mod b/go.mod
@@ -0,0 +1,3 @@
+module git.ter0.net/ycc
+
+go 1.17
diff --git a/test.y b/test.y
@@ -0,0 +1,3 @@
+def f()
+ 1
+end
diff --git a/ycc b/ycc
Binary files differ.
diff --git a/ycc.go b/ycc.go
@@ -0,0 +1,83 @@
+package main
+
+import "fmt"
+import "os"
+import "regexp"
+import "bytes"
+
+type Tokenizer struct {
+ code []byte
+}
+
+type TokenType struct {
+ name string
+ pattern string
+}
+
+var tokenTypes = []TokenType{
+ {
+ name: "def",
+ pattern: `\bdef\b`,
+ },
+ {
+ name: "end",
+ pattern: `\bend\b`,
+ },
+ {
+ name: "identifier",
+ pattern: `\b[a-zA-Z]\b`,
+ },
+ {
+ name: "integer",
+ pattern: `\b[0-9]\b`,
+ },
+ {
+ name: "oparen",
+ pattern: `\(`,
+ },
+ {
+ name: "cparen",
+ pattern: `\)`,
+ },
+}
+
+type Token struct {
+ type_of string
+ value []byte
+}
+
+func (t *Tokenizer) tokenize() {
+ var tokens []Token
+ for len(t.code) > 0 {
+ tokens = append(tokens, t.tokenize_one_token())
+ t.code = bytes.TrimSpace(t.code)
+ }
+ fmt.Printf("%s\n", tokens)
+}
+
+func (t *Tokenizer) tokenize_one_token() Token {
+ for _, tokenType := range tokenTypes {
+ pattern := fmt.Sprintf(`\A(%s)`, tokenType.pattern)
+ re := regexp.MustCompile(pattern)
+ match := re.Find(t.code)
+ if match != nil {
+ t.code = t.code[len(match):]
+ return Token{type_of: tokenType.name, value: match}
+ }
+ }
+ fmt.Printf("Couldn't match token on '%s'", t.code)
+ os.Exit(1)
+ // return token, err instead
+ return Token{}
+}
+
+func main() {
+ code, err := os.ReadFile("test.y")
+ if err != nil {
+ panic("failed to read source")
+ }
+ t := &Tokenizer{
+ code: code,
+ }
+ t.tokenize()
+}
