405 lines
18 KiB
Nim
405 lines
18 KiB
Nim
# Copyright 2022 Mattia Giambirtone & All Contributors
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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## Peon's main executable
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# Our stuff
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import frontend/lexer as l
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import frontend/parser as p
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import frontend/compiler as c
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import backend/vm as v
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import util/serializer as s
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import util/debugger
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import util/symbols
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import config
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# Builtins & external libs
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import std/strformat
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import std/strutils
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import std/terminal
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import std/parseopt
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when debugSerializer:
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import std/times
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import std/os
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# Thanks art <3
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import jale/editor as ed
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import jale/templates
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import jale/plugin/defaults
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import jale/plugin/editor_history
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import jale/keycodes
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import jale/multiline
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# Forward declarations
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proc getLineEditor: LineEditor
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proc repl =
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styledEcho fgMagenta, "Welcome into the peon REPL!"
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var
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keep = true
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tokens: seq[Token] = @[]
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tree: seq[Declaration] = @[]
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compiled: Chunk = newChunk()
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serialized: Serialized
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tokenizer = newLexer()
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parser = newParser()
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compiler = newCompiler(replMode=true)
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vm = newPeonVM()
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debugger = newDebugger()
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serializer = newSerializer()
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editor = getLineEditor()
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input: string
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current: string
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incremental: bool = false
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tokenizer.fillSymbolTable()
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editor.bindEvent(jeQuit):
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stdout.styledWriteLine(fgGreen, "Goodbye!")
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editor.prompt = "=> "
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keep = false
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input = ""
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editor.bindKey("ctrl+a"):
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editor.content.home()
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editor.bindKey("ctrl+e"):
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editor.content.`end`()
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while keep:
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try:
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input = editor.read()
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if input.len() == 0:
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continue
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elif input == "#reset":
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compiled = newChunk()
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compiler = newCompiler()
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parser = newParser()
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incremental = false
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continue
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elif input == "#clear":
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stdout.write("\x1Bc")
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continue
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tokens = tokenizer.lex(input, "stdin")
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if tokens.len() == 0:
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continue
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when debugLexer:
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styledEcho fgCyan, "Tokenization step:"
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for i, token in tokens:
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if i == tokens.high():
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# Who cares about EOF?
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break
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styledEcho fgGreen, "\t", $token
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echo ""
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tree = parser.parse(tokens, "stdin", tokenizer.getLines(), input, persist=true)
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if tree.len() == 0:
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continue
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when debugParser:
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styledEcho fgCyan, "Parsing step:"
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for node in tree:
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styledEcho fgGreen, "\t", $node
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echo ""
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discard compiler.compile(tree, "stdin", tokenizer.getLines(), input, chunk=compiled, incremental=incremental)
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incremental = true
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when debugCompiler:
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styledEcho fgCyan, "Compilation step:\n"
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debugger.disassembleChunk(compiled, "stdin")
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echo ""
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serialized = serializer.loadBytes(serializer.dumpBytes(compiled, "stdin"))
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when debugSerializer:
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styledEcho fgCyan, "Serialization step: "
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styledEcho fgBlue, "\t- Peon version: ", fgYellow, &"{serialized.version.major}.{serialized.version.minor}.{serialized.version.patch}", fgBlue, " (commit ", fgYellow, serialized.commit[0..8], fgBlue, ") on branch ", fgYellow, serialized.branch
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stdout.styledWriteLine(fgBlue, "\t- Compilation date & time: ", fgYellow, fromUnix(serialized.compileDate).format("d/M/yyyy HH:mm:ss"))
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stdout.styledWrite(fgBlue, &"\t- Constants segment: ")
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if serialized.chunk.consts == compiled.consts:
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styledEcho fgGreen, "OK"
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else:
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styledEcho fgRed, "Corrupted"
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stdout.styledWrite(fgBlue, &"\t- Code segment: ")
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if serialized.chunk.code == compiled.code:
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styledEcho fgGreen, "OK"
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else:
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styledEcho fgRed, "Corrupted"
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stdout.styledWrite(fgBlue, "\t- Line info segment: ")
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if serialized.chunk.lines == compiled.lines:
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styledEcho fgGreen, "OK"
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else:
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styledEcho fgRed, "Corrupted"
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stdout.styledWrite(fgBlue, "\t- CFI segment: ")
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if serialized.chunk.cfi == compiled.cfi:
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styledEcho fgGreen, "OK"
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else:
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styledEcho fgRed, "Corrupted"
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vm.run(serialized.chunk)
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except LexingError:
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input = ""
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var exc = LexingError(getCurrentException())
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let relPos = exc.lexer.getRelPos(exc.line)
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let line = exc.lexer.getSource().splitLines()[exc.line - 1].strip(chars={'\n'})
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stderr.styledWriteLine(fgRed, "A fatal error occurred while parsing ", fgYellow, &"'{exc.file}'", fgRed, ", module ",
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fgYellow, &"'{exc.file.extractFilename()}'", fgRed, ", line ", fgYellow, $exc.line, fgRed, " at ", fgYellow, &"'{exc.lexeme.escape()}'",
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fgRed, ": ", fgGreen , getCurrentExceptionMsg())
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styledEcho fgBlue, "Source line: " , fgDefault, line
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styledEcho fgCyan, " ".repeat(len("Source line: ") + line.find(exc.lexeme)) & "^".repeat(abs(relPos.stop - relPos.start - line.find(exc.lexeme)))
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except ParseError:
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input = ""
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let exc = ParseError(getCurrentException())
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let lexeme = exc.token.lexeme
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var lineNo = exc.token.line
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let relPos = exc.parser.getRelPos(lineNo)
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let fn = parser.getCurrentFunction()
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let line = exc.parser.getSource().splitLines()[lineNo - 1].strip(chars={'\n'})
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var fnMsg = ""
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if fn != nil and fn.kind == funDecl:
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fnMsg &= &"in function '{FunDecl(fn).name.token.lexeme}'"
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stderr.styledWriteLine(fgRed, "A fatal error occurred while parsing ", fgYellow, &"'{exc.file}'", fgRed, ", module ",
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fgYellow, &"'{exc.module}'", fgRed, ", line ", fgYellow, $lineNo, fgRed, " at ", fgYellow, &"'{lexeme}'",
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fgRed, ": ", fgGreen , getCurrentExceptionMsg())
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styledEcho fgBlue, "Source line: " , fgDefault, line
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styledEcho fgCyan, " ".repeat(len("Source line: ") + line.find(lexeme)) & "^".repeat(abs(relPos.stop - relPos.start - line.find(lexeme)))
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except CompileError:
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let exc = CompileError(getCurrentException())
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let lexeme = exc.node.token.lexeme
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var lineNo = exc.node.token.line
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let relPos = exc.compiler.getRelPos(lineNo)
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let line = exc.compiler.getSource().splitLines()[lineNo - 1].strip(chars={'\n'})
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var fn = exc.compiler.getCurrentFunction()
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var fnMsg = ""
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if fn != nil and fn.kind == funDecl:
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fnMsg &= &"in function '{FunDecl(fn).name.token.lexeme}'"
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stderr.styledWriteLine(fgRed, "A fatal error occurred while compiling ", fgYellow, &"'{exc.file}'", fgRed, ", module ",
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fgYellow, &"'{exc.module}'", fgRed, ", line ", fgYellow, $lineNo, fgRed, " at ", fgYellow, &"'{lexeme}'",
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fgRed, ": ", fgGreen , getCurrentExceptionMsg())
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styledEcho fgBlue, "Source line: " , fgDefault, line
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styledEcho fgCyan, " ".repeat(len("Source line: ") + line.find(lexeme)) & "^".repeat(abs(relPos.stop - relPos.start - line.find(lexeme)))
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except SerializationError:
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let exc = SerializationError(getCurrentException())
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stderr.styledWriteLine(fgRed, "A fatal error occurred while (de-)serializing", fgYellow, &"'{exc.file}'", fgGreen, ": ", getCurrentExceptionMsg())
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quit(0)
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proc runFile(f: string, interactive: bool = false, fromString: bool = false, dump: bool = true, breakpoints: seq[uint64] = @[]) =
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var
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tokens: seq[Token] = @[]
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tree: seq[Declaration] = @[]
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compiled: Chunk
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serialized: Serialized
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tokenizer = newLexer()
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parser = newParser()
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compiler = newCompiler()
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debugger {.used.} = newDebugger()
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serializer = newSerializer()
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vm = newPeonVM()
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input: string
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tokenizer.fillSymbolTable()
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try:
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var f = f
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if not fromString:
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if not f.endsWith(".pn"):
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f &= ".pn"
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input = readFile(f)
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else:
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input = f
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f = "<string>"
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tokens = tokenizer.lex(input, f)
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if tokens.len() == 0:
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return
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when debugLexer:
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styledEcho fgCyan, "Tokenization step:"
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for i, token in tokens:
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if i == tokens.high():
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# Who cares about EOF?
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break
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styledEcho fgGreen, "\t", $token
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echo ""
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tree = parser.parse(tokens, f, tokenizer.getLines(), input)
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if tree.len() == 0:
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return
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when debugParser:
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styledEcho fgCyan, "Parsing step:"
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for node in tree:
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styledEcho fgGreen, "\t", $node
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echo ""
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compiled = compiler.compile(tree, f, tokenizer.getLines(), input)
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when debugCompiler:
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styledEcho fgCyan, "Compilation step:\n"
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debugger.disassembleChunk(compiled, f)
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echo ""
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var path = splitFile(f).dir
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if path.len() > 0:
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path &= "/"
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path &= splitFile(f).name & ".pbc"
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if dump or not fromString:
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serializer.dumpFile(compiled, f, path)
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serialized = serializer.loadFile(path)
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else:
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serialized = serializer.loadBytes(serializer.dumpBytes(compiled, f))
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when debugSerializer:
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styledEcho fgCyan, "Serialization step: "
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styledEcho fgBlue, "\t- Peon version: ", fgYellow, &"{serialized.version.major}.{serialized.version.minor}.{serialized.version.patch}", fgBlue, " (commit ", fgYellow, serialized.commit[0..8], fgBlue, ") on branch ", fgYellow, serialized.branch
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stdout.styledWriteLine(fgBlue, "\t- Compilation date & time: ", fgYellow, fromUnix(serialized.compileDate).format("d/M/yyyy HH:mm:ss"))
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stdout.styledWrite(fgBlue, &"\t- Constants segment: ")
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if serialized.chunk.consts == compiled.consts:
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styledEcho fgGreen, "OK"
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else:
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styledEcho fgRed, "Corrupted"
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stdout.styledWrite(fgBlue, &"\t- Code segment: ")
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if serialized.chunk.code == compiled.code:
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styledEcho fgGreen, "OK"
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else:
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styledEcho fgRed, "Corrupted"
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stdout.styledWrite(fgBlue, "\t- Line info segment: ")
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if serialized.chunk.lines == compiled.lines:
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styledEcho fgGreen, "OK"
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else:
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styledEcho fgRed, "Corrupted"
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stdout.styledWrite(fgBlue, "\t- CFI segment: ")
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if serialized.chunk.cfi == compiled.cfi:
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styledEcho fgGreen, "OK"
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else:
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styledEcho fgRed, "Corrupted"
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vm.run(serialized.chunk, breakpoints)
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except LexingError:
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var exc = LexingError(getCurrentException())
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let relPos = exc.lexer.getRelPos(exc.line)
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let line = exc.lexer.getSource().splitLines()[exc.line - 1].strip(chars={'\n'})
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stderr.styledWriteLine(fgRed, "A fatal error occurred while parsing ", fgYellow, &"'{exc.file}'", fgRed, ", module ",
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fgYellow, &"'{exc.file.extractFilename()}'", fgRed, ", line ", fgYellow, $exc.line, fgRed, " at ", fgYellow, &"'{exc.lexeme.escape()}'",
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fgRed, ": ", fgGreen , getCurrentExceptionMsg())
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styledEcho fgBlue, "Source line: " , fgDefault, line
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styledEcho fgCyan, " ".repeat(len("Source line: ") + line.find(exc.lexeme)) & "^".repeat(abs(relPos.stop - relPos.start - line.find(exc.lexeme)))
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except ParseError:
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let exc = ParseError(getCurrentException())
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let lexeme = exc.token.lexeme
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var lineNo = exc.token.line
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let relPos = exc.parser.getRelPos(lineNo)
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let fn = parser.getCurrentFunction()
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let line = exc.parser.getSource().splitLines()[lineNo - 1].strip(chars={'\n'})
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var fnMsg = ""
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if fn != nil and fn.kind == funDecl:
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fnMsg &= &"in function '{FunDecl(fn).name.token.lexeme}'"
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stderr.styledWriteLine(fgRed, "A fatal error occurred while parsing ", fgYellow, &"'{exc.file}'", fgRed, ", module ",
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fgYellow, &"'{exc.module}'", fgRed, ", line ", fgYellow, $lineNo, fgRed, " at ", fgYellow, &"'{lexeme}'",
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fgRed, ": ", fgGreen , getCurrentExceptionMsg())
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styledEcho fgBlue, "Source line: " , fgDefault, line
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styledEcho fgCyan, " ".repeat(len("Source line: ") + line.find(lexeme)) & "^".repeat(abs(relPos.stop - relPos.start - line.find(lexeme)))
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except CompileError:
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let exc = CompileError(getCurrentException())
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let lexeme = exc.node.token.lexeme
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var lineNo = exc.node.token.line
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let relPos = exc.compiler.getRelPos(lineNo)
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let line = exc.compiler.getSource().splitLines()[lineNo - 1].strip(chars={'\n'})
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var fn = exc.compiler.getCurrentFunction()
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var fnMsg = ""
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if fn != nil and fn.kind == funDecl:
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fnMsg &= &"in function '{FunDecl(fn).name.token.lexeme}'"
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stderr.styledWriteLine(fgRed, "A fatal error occurred while compiling ", fgYellow, &"'{exc.file}'", fgRed, ", module ",
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fgYellow, &"'{exc.module}'", fgRed, ", line ", fgYellow, $lineNo, fgRed, " at ", fgYellow, &"'{lexeme}'",
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fgRed, ": ", fgGreen , getCurrentExceptionMsg())
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styledEcho fgBlue, "Source line: " , fgDefault, line
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styledEcho fgCyan, " ".repeat(len("Source line: ") + line.find(lexeme)) & "^".repeat(abs(relPos.stop - relPos.start - line.find(lexeme)))
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except SerializationError:
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let exc = SerializationError(getCurrentException())
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stderr.styledWriteLine(fgRed, "A fatal error occurred while (de-)serializing", fgYellow, &"'{exc.file}'", fgGreen, ": ", getCurrentExceptionMsg())
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except IOError:
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stderr.styledWriteLine(fgRed, "An error occurred while trying to read ", fgYellow, &"'{f}'", fgGreen, &": {getCurrentExceptionMsg()}")
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except OSError:
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stderr.styledWriteLine(fgRed, "An error occurred while trying to read ", fgYellow, &"'{f}'", fgGreen, &": {osErrorMsg(osLastError())} [errno {osLastError()}]")
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when isMainModule:
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setControlCHook(proc () {.noconv.} = quit(0))
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var optParser = initOptParser(commandLineParams())
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var file: string = ""
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var fromString: bool = false
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var interactive: bool = false
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var dump: bool = true
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var breaks: seq[uint64] = @[]
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for kind, key, value in optParser.getopt():
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case kind:
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of cmdArgument:
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file = key
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of cmdLongOption:
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case key:
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of "help":
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echo HELP_MESSAGE
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quit()
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of "version":
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echo PEON_VERSION_STRING
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quit()
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of "string":
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file = key
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fromString = true
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of "interactive":
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interactive = true
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of "no-dump":
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dump = false
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of "breakpoints":
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when not debugVM:
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echo "error: cannot set breakpoints in release mode"
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quit()
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for point in value.strip(chars={' '}).split(","):
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try:
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breaks.add(parseBiggestUInt(point))
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except ValueError:
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echo &"error: invalid breakpoint value '{point}'"
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quit()
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else:
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echo &"error: unkown option '{key}'"
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quit()
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of cmdShortOption:
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case key:
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of "h":
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echo HELP_MESSAGE
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quit()
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of "v":
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echo PEON_VERSION_STRING
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quit()
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of "s":
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file = key
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fromString = true
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of "i":
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interactive = true
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of "d":
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dump = false
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of "b":
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when not debugVM:
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echo "error: cannot set breakpoints in release mode"
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quit()
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for point in value.strip(chars={' '}).split(","):
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try:
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breaks.add(parseBiggestUInt(point))
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except ValueError:
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echo &"error: invalid breakpoint value '{point}'"
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quit()
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else:
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echo &"error: unkown option '{key}'"
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quit()
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else:
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echo "usage: peon [options] [filename.pn]"
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quit()
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# TODO: Use interactive
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if file == "":
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repl()
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else:
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runFile(file, interactive, fromString, dump, breaks)
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proc getLineEditor: LineEditor =
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result = newLineEditor()
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result.prompt = "=> "
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result.populateDefaults()
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let history = result.plugHistory()
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result.bindHistory(history)
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