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for, while, if, else

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This commit is contained in:
selimaj-dev
2024-05-24 22:51:25 +02:00
parent 93ba413251
commit 8c32610737
3 changed files with 526 additions and 215 deletions
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src/parser.rs
+88 -33
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@@ -1,7 +1,7 @@
use crate::lexer::{Token, TokenType};
use std::fmt;
use regex::Regex;
use once_cell::sync::Lazy;
use regex::Regex;
use std::fmt;
#[derive(Clone, Debug, PartialEq, Eq)]
pub enum AstType {
@@ -13,16 +13,18 @@ pub enum AstType {
VariableDeceleration,
PointerDeceleration,
MutVariableDeceleration,
State3,
State2,
Include,
IncludeLocal,
CodeBlock,
Json,
Other
Other,
}
pub struct Ast {
pub tokens: Vec<Token>,
pub ast_type: AstType
pub ast_type: AstType,
}
impl fmt::Display for Ast {
@@ -58,7 +60,7 @@ pub struct Parser {
pub index: u32,
pub include_regex: Lazy<Regex>,
pub include_regex_local: Lazy<Regex>,
pub json: bool
pub json: bool,
}
impl Parser {
@@ -68,56 +70,98 @@ impl Parser {
index: 0,
include_regex: Lazy::new(|| Regex::new(r"^(#include *)<(.*?)>").unwrap()),
include_regex_local: Lazy::new(|| Regex::new(r#"^(#include *)"(.*?)""#).unwrap()),
json: false
json: false,
}
}
pub fn next(&mut self) -> Ast {
let mut ast_res: Ast = Ast {tokens: vec![], ast_type: AstType::Other};
let mut ast_res: Ast = Ast {
tokens: vec![],
ast_type: AstType::Other,
};
let index = self.index as usize;
if index == self.tokens.len() {panic!("Reached the end of tokens")}
if index == self.tokens.len() {
panic!("Reached the end of tokens")
}
let token = &self.tokens[index];
if self.json && self.tokens.len() - (self.index as usize) > 2 && self.tokens[index+1].value == ":" {
if self.json
&& self.tokens.len() - (self.index as usize) > 2
&& self.tokens[index + 1].value == ":"
{
ast_res.ast_type = AstType::Json;
ast_res.tokens.push(self.tokens[index].clone());
ast_res.tokens.push(self.tokens[index+2].clone());
ast_res.tokens.push(self.tokens[index + 2].clone());
self.index += 2;
} else if self.tokens.len()-index > 2 && self.tokens[index].value == "struct" && self.tokens[index+1].token_type==TokenType::Identifier && self.tokens[index+2].token_type==TokenType::Curly {
ast_res.tokens.push(self.tokens[index+1].clone());
ast_res.tokens.push(self.tokens[index+2].clone());
} else if self.tokens.len() - index > 2
&& self.tokens[index].value == "struct"
&& self.tokens[index + 1].token_type == TokenType::Identifier
&& self.tokens[index + 2].token_type == TokenType::Curly
{
ast_res.tokens.push(self.tokens[index + 1].clone());
ast_res.tokens.push(self.tokens[index + 2].clone());
ast_res.ast_type = AstType::StructDeceleration;
self.index += 2;
} else if self.tokens.len() - index > 2
&& self.tokens[index].token_type == TokenType::Keyword1
&& self.tokens[index + 1].token_type == TokenType::Round
&& self.tokens[index + 2].token_type == TokenType::Curly
{
ast_res.tokens.push(self.tokens[index].clone());
ast_res.tokens.push(self.tokens[index + 1].clone());
ast_res.tokens.push(self.tokens[index + 2].clone());
ast_res.ast_type = AstType::State3;
self.index += 2;
} else if self.tokens.len() - index > 1
&& self.tokens[index].token_type == TokenType::Keyword2
&& self.tokens[index + 1].token_type == TokenType::Curly
{
ast_res.tokens.push(self.tokens[index].clone());
ast_res.tokens.push(self.tokens[index + 1].clone());
ast_res.ast_type = AstType::State2;
self.index += 1;
} else {
match token.token_type {
TokenType::Identifier => {
ast_res.tokens.push(self.tokens[index].clone());
if self.tokens.len()-index > 3 && self.tokens[index+1].token_type==TokenType::Identifier && self.tokens[index+2].token_type==TokenType::Round && self.tokens[index+3].token_type==TokenType::Curly {
ast_res.tokens.push(self.tokens[index+1].clone());
ast_res.tokens.push(self.tokens[index+2].clone());
ast_res.tokens.push(self.tokens[index+3].clone());
if self.tokens.len() - index > 3
&& self.tokens[index + 1].token_type == TokenType::Identifier
&& self.tokens[index + 2].token_type == TokenType::Round
&& self.tokens[index + 3].token_type == TokenType::Curly
{
ast_res.tokens.push(self.tokens[index + 1].clone());
ast_res.tokens.push(self.tokens[index + 2].clone());
ast_res.tokens.push(self.tokens[index + 3].clone());
if token.value == "void" {
ast_res.ast_type = AstType::VoidFunctionDeceleration;
} else {
ast_res.ast_type = AstType::FunctionDeceleration;
}
self.index += 3;
} else if self.tokens.len()-index > 1 && self.tokens[index+1].token_type==TokenType::Curly {
ast_res.tokens.push(self.tokens[index+1].clone());
} else if self.tokens.len() - index > 1
&& self.tokens[index + 1].token_type == TokenType::Curly
{
ast_res.tokens.push(self.tokens[index + 1].clone());
ast_res.ast_type = AstType::StructCall;
self.index += 1;
} else if self.tokens.len()-index > 2 && self.tokens[index+1].token_type==TokenType::Identifier && self.tokens[index+2].token_type==TokenType::Curly {
ast_res.tokens.push(self.tokens[index+1].clone());
ast_res.tokens.push(self.tokens[index+2].clone());
} else if self.tokens.len() - index > 2
&& self.tokens[index + 1].token_type == TokenType::Identifier
&& self.tokens[index + 2].token_type == TokenType::Curly
{
ast_res.tokens.push(self.tokens[index + 1].clone());
ast_res.tokens.push(self.tokens[index + 2].clone());
ast_res.ast_type = AstType::StructVar;
self.index += 2;
} else if self.tokens.len()-index > 1 {
if self.tokens[index+1].token_type==TokenType::Identifier {
ast_res.tokens.push(self.tokens[index+1].clone());
} else if self.tokens.len() - index > 1 {
if self.tokens[index + 1].token_type == TokenType::Identifier {
ast_res.tokens.push(self.tokens[index + 1].clone());
ast_res.ast_type = AstType::VariableDeceleration;
self.index += 1;
} else if self.tokens.len()-index > 2 && self.tokens[index+2].token_type==TokenType::Identifier && self.tokens[index+1].token_type==TokenType::Angle {
ast_res.tokens.push(self.tokens[index+2].clone());
} else if self.tokens.len() - index > 2
&& self.tokens[index + 2].token_type == TokenType::Identifier
&& self.tokens[index + 1].token_type == TokenType::Angle
{
ast_res.tokens.push(self.tokens[index + 2].clone());
ast_res.tokens[0].value += "<";
ast_res.tokens[0].value += self.tokens[index+1].value.as_str();
ast_res.tokens[0].value += self.tokens[index + 1].value.as_str();
ast_res.tokens[0].value += ">";
ast_res.ast_type = AstType::VariableDeceleration;
self.index += 2;
@@ -126,10 +170,20 @@ impl Parser {
}
TokenType::Include => {
if let Some(caps) = self.include_regex.captures(&token.value) {
ast_res.tokens.push(Token {token_type: TokenType::String, value: caps[2].to_owned().to_string(), line: 0, column: 0});
ast_res.tokens.push(Token {
token_type: TokenType::String,
value: caps[2].to_owned().to_string(),
line: 0,
column: 0,
});
ast_res.ast_type = AstType::Include;
} else if let Some(caps) = self.include_regex_local.captures(&token.value) {
ast_res.tokens.push(Token {token_type: TokenType::String, value: caps[2].to_owned().to_string(), line: 0, column: 0});
ast_res.tokens.push(Token {
token_type: TokenType::String,
value: caps[2].to_owned().to_string(),
line: 0,
column: 0,
});
ast_res.ast_type = AstType::IncludeLocal;
} else {
ast_res.tokens.push(token.clone());
@@ -137,8 +191,9 @@ impl Parser {
}
}
TokenType::Keyword => {
if token.value == "cb" && self.tokens[index+1].token_type == TokenType::Curly {
ast_res.tokens.push(self.tokens[index+1].clone());
if token.value == "cb" && self.tokens[index + 1].token_type == TokenType::Curly
{
ast_res.tokens.push(self.tokens[index + 1].clone());
ast_res.ast_type = AstType::CodeBlock;
self.index += 1;
} else {
@@ -153,4 +208,4 @@ impl Parser {
self.index += 1;
ast_res
}
}
}