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| 1 | +use rustpython_bytecode::bytecode::CodeObject; |
| 2 | +use rustpython_compiler_core::{compile, symboltable}; |
| 3 | +use rustpython_parser::{ast::Location, parser}; |
| 4 | +use std::fmt; |
| 5 | + |
| 6 | +pub use compile::{CompileOpts, Mode}; |
| 7 | +pub use symboltable::{Symbol, SymbolScope, SymbolTable, SymbolTableType}; |
| 8 | + |
| 9 | +#[derive(Debug, thiserror::Error)] |
| 10 | +pub enum CompileErrorType { |
| 11 | + #[error(transparent)] |
| 12 | + Compile(#[from] rustpython_compiler_core::error::CompileErrorType), |
| 13 | + #[error(transparent)] |
| 14 | + Parse(#[from] rustpython_parser::error::ParseErrorType), |
| 15 | +} |
| 16 | + |
| 17 | +#[derive(Debug, thiserror::Error)] |
| 18 | +pub struct CompileError { |
| 19 | + pub error: CompileErrorType, |
| 20 | + pub statement: Option<String>, |
| 21 | + pub source_path: String, |
| 22 | + pub location: Location, |
| 23 | +} |
| 24 | + |
| 25 | +impl fmt::Display for CompileError { |
| 26 | + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { |
| 27 | + let loc = self.location; |
| 28 | + if let Some(ref stmt) = self.statement { |
| 29 | + // visualize the error when location and statement are provided |
| 30 | + write!( |
| 31 | + f, |
| 32 | + "{}", |
| 33 | + loc.visualize(stmt, &format_args!("{} at {}", self.error, loc)) |
| 34 | + ) |
| 35 | + } else { |
| 36 | + write!(f, "{} at {}", self.error, loc) |
| 37 | + } |
| 38 | + } |
| 39 | +} |
| 40 | + |
| 41 | +impl CompileError { |
| 42 | + fn from_compile(error: rustpython_compiler_core::error::CompileError, source: &str) -> Self { |
| 43 | + CompileError { |
| 44 | + error: error.error.into(), |
| 45 | + location: error.location, |
| 46 | + source_path: error.source_path, |
| 47 | + statement: get_statement(source, error.location), |
| 48 | + } |
| 49 | + } |
| 50 | + fn from_parse( |
| 51 | + error: rustpython_parser::error::ParseError, |
| 52 | + source: &str, |
| 53 | + source_path: String, |
| 54 | + ) -> Self { |
| 55 | + CompileError { |
| 56 | + error: error.error.into(), |
| 57 | + location: error.location, |
| 58 | + source_path, |
| 59 | + statement: get_statement(source, error.location), |
| 60 | + } |
| 61 | + } |
| 62 | + fn from_symtable( |
| 63 | + error: symboltable::SymbolTableError, |
| 64 | + source: &str, |
| 65 | + source_path: String, |
| 66 | + ) -> Self { |
| 67 | + Self::from_compile(error.into_compile_error(source_path), source) |
| 68 | + } |
| 69 | +} |
| 70 | + |
| 71 | +/// Compile a given sourcecode into a bytecode object. |
| 72 | +pub fn compile( |
| 73 | + source: &str, |
| 74 | + mode: compile::Mode, |
| 75 | + source_path: String, |
| 76 | + opts: CompileOpts, |
| 77 | +) -> Result<CodeObject, CompileError> { |
| 78 | + macro_rules! try_parse { |
| 79 | + ($x:expr) => { |
| 80 | + match $x { |
| 81 | + Ok(x) => x, |
| 82 | + Err(e) => return Err(CompileError::from_parse(e, source, source_path)), |
| 83 | + } |
| 84 | + }; |
| 85 | + } |
| 86 | + let res = match mode { |
| 87 | + compile::Mode::Exec => { |
| 88 | + let ast = try_parse!(parser::parse_program(source)); |
| 89 | + compile::compile_program(ast, source_path, opts) |
| 90 | + } |
| 91 | + compile::Mode::Eval => { |
| 92 | + let statement = try_parse!(parser::parse_statement(source)); |
| 93 | + compile::compile_statement_eval(statement, source_path, opts) |
| 94 | + } |
| 95 | + compile::Mode::Single => { |
| 96 | + let ast = try_parse!(parser::parse_program(source)); |
| 97 | + compile::compile_program_single(ast, source_path, opts) |
| 98 | + } |
| 99 | + }; |
| 100 | + res.map_err(|e| CompileError::from_compile(e, source)) |
| 101 | +} |
| 102 | + |
| 103 | +pub fn compile_symtable( |
| 104 | + source: &str, |
| 105 | + mode: compile::Mode, |
| 106 | + source_path: &str, |
| 107 | +) -> Result<symboltable::SymbolTable, CompileError> { |
| 108 | + macro_rules! try_parse { |
| 109 | + ($x:expr) => { |
| 110 | + match $x { |
| 111 | + Ok(x) => x, |
| 112 | + Err(e) => return Err(CompileError::from_parse(e, source, source_path.to_owned())), |
| 113 | + } |
| 114 | + }; |
| 115 | + } |
| 116 | + let res = match mode { |
| 117 | + compile::Mode::Exec | compile::Mode::Single => { |
| 118 | + let ast = try_parse!(parser::parse_program(source)); |
| 119 | + symboltable::make_symbol_table(&ast) |
| 120 | + } |
| 121 | + compile::Mode::Eval => { |
| 122 | + let statement = try_parse!(parser::parse_statement(source)); |
| 123 | + symboltable::statements_to_symbol_table(&statement) |
| 124 | + } |
| 125 | + }; |
| 126 | + res.map_err(|e| CompileError::from_symtable(e, source, source_path.to_owned())) |
| 127 | +} |
| 128 | + |
| 129 | +fn get_statement(source: &str, loc: Location) -> Option<String> { |
| 130 | + if loc.column() == 0 || loc.row() == 0 { |
| 131 | + return None; |
| 132 | + } |
| 133 | + let line = source.split('\n').nth(loc.row() - 1)?.to_owned(); |
| 134 | + Some(line + "\n") |
| 135 | +} |
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