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author | Daniel Mensinger <daniel@mensinger-ka.de> | 2019-12-12 17:03:53 +0100 |
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committer | Daniel Mensinger <daniel@mensinger-ka.de> | 2020-05-23 18:13:16 +0200 |
commit | 96eeef62ea791b19fbf9bd57c8494743b2de80bf (patch) | |
tree | 8129cdfea90547cc753767a3ed1a0a2fc917a5b5 /mesonbuild/ast/printer.py | |
parent | f2e2e910d9c646849e55f97215217b87de491805 (diff) | |
download | meson-96eeef62ea791b19fbf9bd57c8494743b2de80bf.zip meson-96eeef62ea791b19fbf9bd57c8494743b2de80bf.tar.gz meson-96eeef62ea791b19fbf9bd57c8494743b2de80bf.tar.bz2 |
ast: Add AST JSON printer
Diffstat (limited to 'mesonbuild/ast/printer.py')
-rw-r--r-- | mesonbuild/ast/printer.py | 160 |
1 files changed, 159 insertions, 1 deletions
diff --git a/mesonbuild/ast/printer.py b/mesonbuild/ast/printer.py index 39e2cca..a57ba20 100644 --- a/mesonbuild/ast/printer.py +++ b/mesonbuild/ast/printer.py @@ -18,6 +18,7 @@ from .. import mparser from . import AstVisitor import re +import typing as T arithmic_map = { 'add': '+', @@ -155,7 +156,7 @@ class AstPrinter(AstVisitor): self.append_padded(prefix + 'if', node) prefix = 'el' i.accept(self) - if node.elseblock: + if not isinstance(node.elseblock, mparser.EmptyNode): self.append('else', node) node.elseblock.accept(self) self.append('endif', node) @@ -199,3 +200,160 @@ class AstPrinter(AstVisitor): self.result = re.sub(r', \n$', '\n', self.result) else: self.result = re.sub(r', $', '', self.result) + +class AstJSONPrinter(AstVisitor): + def __init__(self) -> None: + self.result = {} # type: T.Dict[str, T.Any] + self.current = self.result + + def _accept(self, key: str, node: mparser.BaseNode) -> None: + old = self.current + data = {} # type: T.Dict[str, T.Any] + self.current = data + node.accept(self) + self.current = old + self.current[key] = data + + def _accept_list(self, key: str, nodes: T.Sequence[mparser.BaseNode]) -> None: + old = self.current + datalist = [] # type: T.List[T.Dict[str, T.Any]] + for i in nodes: + self.current = {} + i.accept(self) + datalist += [self.current] + self.current = old + self.current[key] = datalist + + def _raw_accept(self, node: mparser.BaseNode, data: T.Dict[str, T.Any]) -> None: + old = self.current + self.current = data + node.accept(self) + self.current = old + + def setbase(self, node: mparser.BaseNode) -> None: + self.current['node'] = type(node).__name__ + self.current['lineno'] = node.lineno + self.current['colno'] = node.colno + self.current['end_lineno'] = node.end_lineno + self.current['end_colno'] = node.end_colno + + def visit_default_func(self, node: mparser.BaseNode) -> None: + self.setbase(node) + + def gen_ElementaryNode(self, node: mparser.ElementaryNode) -> None: + self.current['value'] = node.value + self.setbase(node) + + def visit_BooleanNode(self, node: mparser.BooleanNode) -> None: + self.gen_ElementaryNode(node) + + def visit_IdNode(self, node: mparser.IdNode) -> None: + self.gen_ElementaryNode(node) + + def visit_NumberNode(self, node: mparser.NumberNode) -> None: + self.gen_ElementaryNode(node) + + def visit_StringNode(self, node: mparser.StringNode) -> None: + self.gen_ElementaryNode(node) + + def visit_ArrayNode(self, node: mparser.ArrayNode) -> None: + self._accept('args', node.args) + self.setbase(node) + + def visit_DictNode(self, node: mparser.DictNode) -> None: + self._accept('args', node.args) + self.setbase(node) + + def visit_OrNode(self, node: mparser.OrNode) -> None: + self._accept('left', node.left) + self._accept('right', node.right) + self.setbase(node) + + def visit_AndNode(self, node: mparser.AndNode) -> None: + self._accept('left', node.left) + self._accept('right', node.right) + self.setbase(node) + + def visit_ComparisonNode(self, node: mparser.ComparisonNode) -> None: + self._accept('left', node.left) + self._accept('right', node.right) + self.current['ctype'] = node.ctype + self.setbase(node) + + def visit_ArithmeticNode(self, node: mparser.ArithmeticNode) -> None: + self._accept('left', node.left) + self._accept('right', node.right) + self.current['op'] = arithmic_map[node.operation] + self.setbase(node) + + def visit_NotNode(self, node: mparser.NotNode) -> None: + self._accept('right', node.value) + self.setbase(node) + + def visit_CodeBlockNode(self, node: mparser.CodeBlockNode) -> None: + self._accept_list('lines', node.lines) + self.setbase(node) + + def visit_IndexNode(self, node: mparser.IndexNode) -> None: + self._accept('object', node.iobject) + self._accept('index', node.index) + self.setbase(node) + + def visit_MethodNode(self, node: mparser.MethodNode) -> None: + self._accept('object', node.source_object) + self._accept('args', node.args) + self.current['name'] = node.name + self.setbase(node) + + def visit_FunctionNode(self, node: mparser.FunctionNode) -> None: + self._accept('args', node.args) + self.current['name'] = node.func_name + self.setbase(node) + + def visit_AssignmentNode(self, node: mparser.AssignmentNode) -> None: + self._accept('value', node.value) + self.current['var_name'] = node.var_name + self.setbase(node) + + def visit_PlusAssignmentNode(self, node: mparser.PlusAssignmentNode) -> None: + self._accept('value', node.value) + self.current['var_name'] = node.var_name + self.setbase(node) + + def visit_ForeachClauseNode(self, node: mparser.ForeachClauseNode) -> None: + self._accept('items', node.items) + self._accept('block', node.block) + self.current['varnames'] = node.varnames + self.setbase(node) + + def visit_IfClauseNode(self, node: mparser.IfClauseNode) -> None: + self._accept_list('ifs', node.ifs) + self._accept('else', node.elseblock) + self.setbase(node) + + def visit_UMinusNode(self, node: mparser.UMinusNode) -> None: + self._accept('right', node.value) + self.setbase(node) + + def visit_IfNode(self, node: mparser.IfNode) -> None: + self._accept('condition', node.condition) + self._accept('block', node.block) + self.setbase(node) + + def visit_TernaryNode(self, node: mparser.TernaryNode) -> None: + self._accept('condition', node.condition) + self._accept('true', node.trueblock) + self._accept('false', node.falseblock) + self.setbase(node) + + def visit_ArgumentNode(self, node: mparser.ArgumentNode) -> None: + self._accept_list('positional', node.arguments) + kwargs_list = [] # type: T.List[T.Dict[str, T.Dict[str, T.Any]]] + for key, val in node.kwargs.items(): + key_res = {} # type: T.Dict[str, T.Any] + val_res = {} # type: T.Dict[str, T.Any] + self._raw_accept(key, key_res) + self._raw_accept(val, val_res) + kwargs_list += [{'key': key_res, 'val': val_res}] + self.current['kwargs'] = kwargs_list + self.setbase(node) |