initial commit

eval_code_blocks.odin

@@ -0,0 +1,92 @@
+#+feature dynamic-literals
+package comb
+
+import os "core:os/os2"
+import "core:strings"
+import tt "core:testing"
+
+LangInfo :: struct {
+	command:        []string,
+	file_extension: string,
+}
+
+lang_info_map := map[string]LangInfo {
+	"python" = {command = {"python3", "-c"}, file_extension = ".py"},
+	"javascript" = {command = {"node", "-e"}, file_extension = ".js"},
+	"bash" = {command = {"bash", "-c"}, file_extension = ".sh"},
+}
+
+EvalError :: union #shared_nil {
+	enum {
+		None = 0,
+		Unknown_Language,
+	},
+	os.Error
+}
+
+eval_code_block :: proc(
+	cb: Code_Block,
+	allocator := context.allocator,
+	temp_allocator := context.temp_allocator,
+) -> (
+	stdout: string,
+	stderr: string,
+	err: EvalError,
+) {
+	info, ok := lang_info_map[cb.language]
+	if !ok {
+		err = .Unknown_Language
+		return
+	}
+
+	command := make([dynamic]string, allocator = temp_allocator)
+	reserve(&command, len(info.command) + 1)
+	for c in info.command {
+		append(&command, c)
+	}
+	append(&command, cb.text)
+
+	env, _ := os.environ(temp_allocator)
+	process_desc := os.Process_Desc {
+		command = command[:],
+		env     = env,
+	}
+	state, byte_stdout, byte_stderr, os_err := os.process_exec(process_desc, allocator)
+	if os_err != nil {
+		delete(byte_stdout)
+		delete(byte_stderr)
+		err = os_err
+		return
+	}
+	stdout = string(byte_stdout)
+	stderr = string(byte_stderr)
+	return
+}
+
+@(test)
+can_eval_code_blocks_python :: proc(t: ^tt.T) {
+    cb := Code_Block{
+    	language="python",
+    	text="print('hello world')"
+    }
+    defer free_all(context.temp_allocator)
+    stdout, stderr := eval_code_block(cb) or_else tt.fail_now(t, "should be able to execute code block")
+    defer delete(stdout)
+    defer delete(stderr)
+    tt.expect_value(t, strings.trim_space(stdout), "hello world")
+    tt.expect_value(t, strings.trim_space(stderr), "")
+}
+
+@(test)
+can_eval_code_blocks_javascript :: proc(t: ^tt.T) {
+    cb := Code_Block{
+    	language="javascript",
+    	text="console.log('hello world')"
+    }
+    defer free_all(context.temp_allocator)
+    stdout, stderr := eval_code_block(cb) or_else tt.fail_now(t, "should be able to execute code block")
+    defer delete(stdout)
+    defer delete(stderr)
+    tt.expect_value(t, strings.trim_space(stdout), "hello world")
+    tt.expect_value(t, strings.trim_space(stderr), "")
+}