mirror of https://github.com/egormanga/Slang.git
41 lines
1.5 KiB
Python
41 lines
1.5 KiB
Python
#!/usr/bin/python3
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# Slang compilers
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from ..ast import SlSyntaxError, SlValidationError
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import abc, traceback
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class Compiler(abc.ABC):
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@abc.abstractclassmethod
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def compile_ast(cls, ast):
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pass
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def lstripcount(s, chars): # TODO: commonize
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for ii, i in enumerate(s):
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if (i not in chars): break
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else: ii = 0
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return (ii, s[ii:])
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class SlCompilationError(Exception):
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__slots__ = ('desc', 'node', 'line', 'scope')
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def __init__(self, desc, node, line='', *, scope=None):
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self.desc, self.node, self.line, self.scope = desc, node, line, scope
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def __str__(self):
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l, line = lstripcount(self.line.partition('\n')[0].replace('\t', ' '), ' \t')
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offset = (self.node.offset-l) if (self.node.offset != -1) else len(line)
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return (f'\033[2m(in {self.scope})\033[0m ' if (self.scope is not None) else '') + f"Compilation error: {self.desc}{self.at}"+(':\n' + \
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' \033[1m'+line[:offset]+'\033[91m'+line[offset:]+'\033[0m\n' + \
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' '+' '*offset+'\033[95m^'+'~'*(self.node.length-1)+'\033[0m' if (line) else '') + \
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(f"\n\n\033[1;95mCaused by:\033[0m\n{self.__cause__ if (isinstance(self.__cause__, (SlSyntaxError, SlValidationError, SlCompilationError))) else ' '+str().join(traceback.format_exception(type(self.__cause__), self.__cause__, self.__cause__.__traceback__))}" if (self.__cause__ is not None) else '')
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@property
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def at(self):
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return f" at line {self.node.lineno}, offset {self.node.offset}"
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@property
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def lineno(self):
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return self.node.lineno
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# by Sdore, 2019
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