#![doc = include_str!("readme.md")]
use crate::{
ast::*,
language::JasmLanguage,
lexer::token_type::JasmTokenType,
parser::{JasmParser, element_type::JasmElementType},
};
use oak_core::{Builder, BuilderCache, GreenNode, OakDiagnostics, OakError, Parser, RedNode, RedTree, SourceText, TextEdit, source::Source};
#[derive(Clone)]
pub struct JasmBuilder<'config> {
pub config: &'config JasmLanguage,
}
impl<'config> JasmBuilder<'config> {
pub fn new(config: &'config JasmLanguage) -> Self {
Self { config }
}
}
impl<'config> Builder<JasmLanguage> for JasmBuilder<'config> {
fn build<'a, S: Source + ?Sized>(&self, source: &'a S, edits: &[TextEdit], cache: &'a mut impl BuilderCache<JasmLanguage>) -> OakDiagnostics<JasmRoot> {
let parser = JasmParser::new(self.config);
let parse_result = parser.parse(source, edits, cache);
match parse_result.result {
Ok(green_tree) => {
let source_text = SourceText::new(source.get_text_in((0..source.length()).into()).into_owned());
match self.build_root(green_tree, &source_text) {
Ok(ast_root) => OakDiagnostics { result: Ok(ast_root), diagnostics: parse_result.diagnostics },
Err(build_error) => {
let mut diagnostics = parse_result.diagnostics;
diagnostics.push(build_error.clone());
OakDiagnostics { result: Err(build_error), diagnostics }
}
}
}
Err(parse_error) => OakDiagnostics { result: Err(parse_error), diagnostics: parse_result.diagnostics },
}
}
}
impl<'config> JasmBuilder<'config> {
fn build_root<'a>(&self, green_tree: &'a GreenNode<'a, JasmLanguage>, source: &SourceText) -> Result<JasmRoot, OakError> {
let red_root = RedNode::new(green_tree, 0);
let mut class = None;
for child in red_root.children() {
if let RedTree::Node(n) = child {
if n.green.kind == JasmElementType::Class {
class = Some(self.build_class(n, source)?);
}
}
}
Ok(JasmRoot { class: class.unwrap_or_else(|| JasmClass { modifiers: vec![], name: String::new(), version: None, methods: vec![], fields: vec![], source_file: None, super_class: None, interfaces: vec![], annotations: vec![], attributes: vec![] }) })
}
fn build_class(&self, node: RedNode<JasmLanguage>, source: &SourceText) -> Result<JasmClass, OakError> {
let mut modifiers = vec![];
let mut name = String::new();
let mut methods = vec![];
let mut fields = vec![];
for child in node.children() {
match child {
RedTree::Leaf(t) => {
let text = source.get_text_in(t.span.clone().into()).to_string();
match t.kind {
JasmTokenType::Public | JasmTokenType::Private | JasmTokenType::Protected | JasmTokenType::Static | JasmTokenType::Final | JasmTokenType::Abstract | JasmTokenType::Synthetic | JasmTokenType::Deprecated => {
modifiers.push(text);
}
JasmTokenType::Identifier => {
name = text;
}
_ => {}
}
}
RedTree::Node(n) => match n.green.kind {
JasmElementType::Method => {
methods.push(self.build_method(n, source)?);
}
JasmElementType::Field => {
fields.push(self.build_field(n, source)?);
}
_ => {}
},
}
}
Ok(JasmClass { modifiers, name, version: None, methods, fields, source_file: None, super_class: None, interfaces: vec![], annotations: vec![], attributes: vec![] })
}
fn build_method(&self, node: RedNode<JasmLanguage>, source: &SourceText) -> Result<JasmMethod, OakError> {
let mut modifiers = vec![];
let mut name = String::new();
let mut descriptor = String::new();
let mut instructions = vec![];
let mut stack = None;
let mut locals = None;
for child in node.children() {
match child {
RedTree::Leaf(t) => {
let text = source.get_text_in(t.span.clone().into()).to_string();
match t.kind {
JasmTokenType::Public
| JasmTokenType::Private
| JasmTokenType::Protected
| JasmTokenType::Static
| JasmTokenType::Final
| JasmTokenType::Native
| JasmTokenType::Synchronized
| JasmTokenType::Synthetic
| JasmTokenType::Deprecated
| JasmTokenType::Varargs => {
modifiers.push(text);
}
JasmTokenType::Identifier => {
if name.is_empty() {
name = text;
}
else if descriptor.is_empty() {
descriptor = text;
}
}
JasmTokenType::Number => {
if let Ok(val) = text.parse::<u32>() {
if stack.is_none() {
stack = Some(val);
}
else if locals.is_none() {
locals = Some(val);
}
}
}
_ => {}
}
}
RedTree::Node(n) => {
if n.green.kind == JasmElementType::Instruction {
instructions.push(self.build_instruction(n, source)?);
}
}
}
}
let name_and_descriptor = if descriptor.is_empty() { name } else { format!("{}{}", name, descriptor) };
Ok(JasmMethod { modifiers, name_and_descriptor, stack_size: stack, locals_count: locals, instructions, exception_handlers: vec![], annotations: vec![], attributes: vec![] })
}
fn build_field(&self, node: RedNode<JasmLanguage>, source: &SourceText) -> Result<JasmField, OakError> {
let mut modifiers = vec![];
let mut name = String::new();
let mut descriptor = String::new();
for child in node.children() {
if let RedTree::Leaf(t) = child {
let text = source.get_text_in(t.span.clone().into()).to_string();
match t.kind {
JasmTokenType::Public | JasmTokenType::Private | JasmTokenType::Protected | JasmTokenType::Static | JasmTokenType::Final | JasmTokenType::Synthetic | JasmTokenType::Deprecated => {
modifiers.push(text);
}
JasmTokenType::Identifier => {
if name.is_empty() {
name = text;
}
else {
descriptor = text;
}
}
_ => {}
}
}
}
let name_and_descriptor = if descriptor.is_empty() { name } else { format!("{} {}", name, descriptor) };
Ok(JasmField { modifiers, name_and_descriptor, annotations: vec![], attributes: vec![] })
}
fn build_instruction(&self, node: RedNode<JasmLanguage>, source: &SourceText) -> Result<JasmInstruction, OakError> {
let mut opcode = String::new();
let mut operands = vec![];
for child in node.children() {
if let RedTree::Leaf(t) = child {
let text = source.get_text_in(t.span.clone().into()).to_string();
let kind_val = t.kind as u16;
if kind_val >= JasmTokenType::ALoad0 as u16 && kind_val <= JasmTokenType::Pop as u16 {
opcode = text;
}
else if matches!(t.kind, JasmTokenType::Identifier | JasmTokenType::Number | JasmTokenType::String) {
operands.push(text);
}
}
}
if operands.is_empty() {
Ok(JasmInstruction::Simple(opcode))
}
else {
let argument = operands.join(" ");
if opcode.starts_with("invoke") {
Ok(JasmInstruction::MethodCall { instruction: opcode, method_ref: argument })
}
else if opcode.starts_with("get") || opcode.starts_with("put") {
Ok(JasmInstruction::FieldAccess { instruction: opcode, field_ref: argument })
}
else {
Ok(JasmInstruction::WithArgument { instruction: opcode, argument })
}
}
}
}