1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150

pub mod ast_interpreter;
pub mod builtins;
pub mod components;
pub mod function_scope;
pub mod json_to_rust;
pub mod variable_handler;

pub use json_to_rust::{json_to_literal, memory_to_literal};

use crate::data::error_info::ErrorInfo;
use crate::data::position::Position;
use crate::data::{
    ast::*, Data, Hold, IndexInfo, Literal,
    MessageData, MSG, warnings::DisplayWarnings,
};
use crate::error_format::*;
use crate::interpreter::{
    ast_interpreter::{for_loop, while_loop, match_actions, solve_if_statement},
    variable_handler::{expr_to_literal, interval::interval_from_expr},
};
use crate::parser::ExitCondition;

use nom::lib::std::collections::HashMap;
use std::sync::mpsc;

////////////////////////////////////////////////////////////////////////////////
// PRIVATE FUNCTION
////////////////////////////////////////////////////////////////////////////////

fn step_vars_to_json(map: HashMap<String, Literal>) -> serde_json::Value {
    let mut json_map = serde_json::Map::new();

    for (key, val) in map.iter() {
        let content_type = &val.content_type;
        json_map.insert(key.to_owned(), val.primitive.format_mem(content_type, true));
    }

    serde_json::json!(json_map)
}

////////////////////////////////////////////////////////////////////////////////
// PUBLIC FUNCTION
////////////////////////////////////////////////////////////////////////////////

pub fn interpret_scope(
    actions: &Block,
    data: &mut Data,
    sender: &Option<mpsc::Sender<MSG>>,
) -> Result<MessageData, ErrorInfo> {
    let mut message_data = MessageData::default();

    for (action, instruction_info) in actions.commands.iter() {
        let instruction_total = instruction_info.index + instruction_info.total;

        if let Some(hold) = &mut data.context.hold {
            if hold.index.command_index > instruction_total {
                continue;
            } else if hold.index.command_index == instruction_info.index {
                data.context.hold = None;
                continue; // this command is the hold, we need to skip it in order to continue the conversation
            }
        }

        if message_data.exit_condition.is_some() {
            return Ok(message_data);
        }

        match action {
            Expr::ObjectExpr(ObjectType::Return(var)) => {
                let lit = expr_to_literal(var, &DisplayWarnings::On, None, data, &mut message_data, &None)?;
                message_data.exit_condition = Some(ExitCondition::Return(lit));

                return Ok(message_data);
            }
            Expr::ObjectExpr(ObjectType::Break(..)) => {
                message_data.exit_condition = Some(ExitCondition::Break);

                return Ok(message_data);
            }
            Expr::ObjectExpr(ObjectType::Continue(..)) => {
                message_data.exit_condition = Some(ExitCondition::Continue);

                return Ok(message_data);
            }
            Expr::ObjectExpr(ObjectType::Hold(..)) => {
                let index = instruction_info.index;
                let map = data.step_vars.to_owned();

                let hold = Hold::new(
                    IndexInfo {
                        command_index: index,
                        loop_index: data.loop_indexs.clone(),
                    },
                    step_vars_to_json(map),
                    data.context.step.clone(),
                    data.context.flow.clone(),
                    data.previous_info.clone(),
                );

                message_data.hold = Some(hold.to_owned());

                MSG::send(&sender, MSG::Hold(hold));
                message_data.exit_condition = Some(ExitCondition::Hold);
                return Ok(message_data);
            }
            Expr::ObjectExpr(fun) => {
                message_data = match_actions(fun, message_data, data, &sender)?
            }
            Expr::IfExpr(ref if_statement) => {
                message_data = solve_if_statement(
                    if_statement,
                    message_data,
                    data,
                    instruction_info,
                    &sender,
                )?;
            }
            Expr::ForEachExpr(ident, index, expr, block, range) => {
                message_data = for_loop(
                    ident,
                    index,
                    expr,
                    block,
                    range,
                    message_data,
                    data,
                    &sender,
                )?
            }
            Expr::WhileExpr(expr, block, range) => {
                message_data = while_loop(
                    expr,
                    block,
                    range,
                    message_data,
                    data,
                    &sender,
                )?
            }
            e => {
                return Err(gen_error_info(
                    Position::new(interval_from_expr(e), &data.context.flow),
                    ERROR_START_INSTRUCTIONS.to_owned(),
                ));
            }
        };
    }

    Ok(message_data)
}