Rename list to vector, add join, read_words, read_resource_words fns

src/context.rs

@@ -1012,10 +1012,10 @@ pub fn clamp_int(value: i64, min: i64, max: i64) -> i64 {
     value.clamp(min, max)
 }
 
-pub fn list(seed: i64, len: usize, generator: Function) -> Result<Vec<Value>, VmError> {
+pub fn vector(len: usize, generator: Function) -> Result<Vec<Value>, VmError> {
     let mut result = Vec::with_capacity(len);
     for i in 0..len {
-        let value = generator.call((hash2(seed, i as i64),))?;
+        let value = generator.call((i as i64,))?;
         result.push(value);
     }
     Ok(result)
@@ -1052,6 +1052,21 @@ pub fn hash_select(i: i64, collection: &[Value]) -> &Value {
     &collection[hash_range(i, collection.len() as i64) as usize]
 }
 
+/// Joins all strings in vector with given separator
+pub fn join(collection: &[Value], separator: &str) -> Result<String, VmError> {
+    let mut result = String::new();
+    let mut first = true;
+    for v in collection {
+        let v = v.clone().into_string()?;
+        if !first {
+            result.push_str(separator);
+        }
+        result.push_str(v.borrow_ref()?.as_str());
+        first = false;
+    }
+    Ok(result)
+}
+
 /// Reads a file into a string.
 pub fn read_to_string(filename: &str) -> io::Result<String> {
     let mut file = File::open(filename).expect("no such file");
@@ -1064,12 +1079,26 @@ pub fn read_to_string(filename: &str) -> io::Result<String> {
 
 /// Reads a file into a vector of lines.
 pub fn read_lines(filename: &str) -> io::Result<Vec<String>> {
-    let file = File::open(filename).expect("no such file");
+    let file = File::open(filename)
+        .map_err(|e| io::Error::new(e.kind(), format!("Failed to open file {filename}: {e}")))?;
     let buf = BufReader::new(file);
-    let result = buf
-        .lines()
-        .map(|l| l.expect("Could not parse line"))
-        .collect();
+    buf.lines().try_collect()
+}
+
+/// Reads a file into a vector of words.
+pub fn read_words(filename: &str) -> io::Result<Vec<String>> {
+    let file = File::open(filename)
+        .map_err(|e| io::Error::new(e.kind(), format!("Failed to open file {filename}: {e}")))?;
+    let buf = BufReader::new(file);
+    let mut result = Vec::new();
+    for line in buf.lines() {
+        let line = line?;
+        let words = line
+            .split(|c: char| !c.is_alphabetic())
+            .map(|s| s.to_string())
+            .filter(|s| !s.is_empty());
+        result.extend(words);
+    }
     Ok(result)
 }
 
@@ -1089,3 +1118,10 @@ pub fn read_resource_lines(path: &str) -> io::Result<Vec<String>> {
         .map(|s| s.to_string())
         .collect_vec())
 }
+
+pub fn read_resource_words(path: &str) -> io::Result<Vec<String>> {
+    Ok(read_resource_to_string(path)?
+        .split(|c: char| !c.is_alphabetic())
+        .map(|s| s.to_string())
+        .collect_vec())
+}

src/workload.rs

@@ -129,7 +129,7 @@ impl Program {
         let mut latte_module = Module::with_crate("latte");
         latte_module.function(&["blob"], context::blob).unwrap();
         latte_module.function(&["text"], context::text).unwrap();
-        latte_module.function(&["list"], context::list).unwrap();
+        latte_module.function(&["vector"], context::vector).unwrap();
 
         latte_module
             .function(&["now_timestamp"], context::now_timestamp)
@@ -177,6 +177,7 @@ impl Program {
 
         latte_module.inst_fn("clamp", context::clamp_float).unwrap();
         latte_module.inst_fn("clamp", context::clamp_int).unwrap();
+        latte_module.inst_fn("join", context::join).unwrap();
 
         let mut fs_module = Module::with_crate("fs");
         fs_module
@@ -185,6 +186,9 @@ impl Program {
         fs_module
             .function(&["read_lines"], context::read_lines)
             .unwrap();
+        fs_module
+            .function(&["read_words"], context::read_words)
+            .unwrap();
         fs_module
             .function(
                 &["read_resource_to_string"],
@@ -194,6 +198,9 @@ impl Program {
         fs_module
             .function(&["read_resource_lines"], context::read_resource_lines)
             .unwrap();
+        fs_module
+            .function(&["read_resource_words"], context::read_resource_words)
+            .unwrap();
 
         let mut context = rune::Context::with_default_modules().unwrap();
         context.install(&context_module).unwrap();