Adding Racket to the build system (#1010)

Author: Amaras

.gitignore

@@ -531,3 +531,7 @@ target/
 
 *.out
 *.class
+
+# OCaml compilation files
+*.cmi
+*.cmx

SConstruct

@@ -18,7 +18,7 @@ SCons.Warnings.warningAsException()
 copy_builder = Builder(action=Copy('$TARGET', '$SOURCE'))
 
 env = Environment(ENV=os.environ,
-                  BUILDERS={'Copier': copy_builder}, 
+                  BUILDERS={'Copier': copy_builder},
                   tools=[
                     'g++', 'gas', 'gcc', 'gfortran', 'gnulink', 'javac'],
                   toolpath=['builders'])
@@ -38,13 +38,15 @@ available_languages = {
     'python',
     'ruby',
     'viml',
+    'racket',
 }
 
 languages_to_import = {
     'coconut': ['coconut'],
     'go': ['go'],
     'rust': ['rustc', 'cargo'],
     'kotlin': ['kotlin'],
+    'racket': ['racket'],
 }
 
 for language, tools in languages_to_import.items():
@@ -89,6 +91,7 @@ languages = {
     'ruby': 'rb',
     'rust': 'rs',
     'viml': 'vim',
+    'racket': 'rkt'
 }
 
 # Do not add new Builders here, add them to the BUILDERS argument in the call to Environment above
@@ -111,7 +114,7 @@ for chapter_dir in contents_path.iterdir():
     for code_dir in chapter_dir.glob('**/code'):
         # For nested chapters e.g. contents/convolutions/1d/
         extended_chapter_path = code_dir.relative_to(contents_path).parent
-        
+
         for language_dir in code_dir.iterdir():
             if (language := language_dir.stem) in available_languages:
                 new_files = [FileInformation(path=file_path,

builders/racket.py

@@ -0,0 +1,37 @@
+from SCons.Builder import Builder
+import SCons.Util
+
+class ToolRacketWarning(SCons.Warnings.SConsWarning):
+    pass
+
+class RacketNotFound(ToolRacketWarning):
+    pass
+
+SCons.Warnings.enableWarningClass(ToolRacketWarning)
+
+def _detect(env):
+    try:
+        return env['raco']
+    except KeyError:
+        pass
+
+    go = env.WhereIs('raco')
+    if go:
+        return go
+
+    SCons.Warnings.warn(RacketNotFound, 'Could not find raco executable')
+
+def exists(env):
+    env.Detect('raco')
+
+def generate(env):
+    env['RACO'] = _detect(env)
+    env['RACOFLAGS'] = []
+
+    racket_builder = Builder(
+        action='"$RACO" exe -o $TARGET $RACOFLAGS $SOURCE',
+        src_suffix='.rkt',
+        suffix='$PROGSUFFIX',
+    )
+
+    env.Append(BUILDERS={'Racket': racket_builder})

sconscripts/racket_SConscript

@@ -0,0 +1,6 @@
+Import('files_to_compile env')
+
+for file_info in files_to_compile:
+    build_target = f'#/build/{file_info.language}/{file_info.chapter}/{file_info.path.stem}'
+    build_result = env.Racket(build_target, str(file_info.path))
+    env.Alias(str(file_info.chapter), build_result)