Jens Johansen
3a1f732c0f
This CL:
* Changes the events so beginX and endX events always comes in pairs
(though technically not right as some specific events can be beginX
endY --- but in those cases it is at least documented and used in code
that actually tests it).
-> This entails adding some events and converting something from
"beginX" to "handleX" instead.
* Adds a utility that can generate an AST of sorts directly from the
parser via a listener using the begin/end matching (and knowing of the
specific ones that doesn't match directly).
* Adds a test that checks that - at least for all tested (50,000+) files
- the AST actually generate "correctly", i.e. matches up begin/ends
and ends up with a single top entry "CompilationUnit".
* Adds a different visualization to the parser listener events by
displaying the "AST directly from the parser" in a UI that can be
navigated. The visualization may not be the best, but it's certainly
a stepping stone.
Change-Id: I9b27f7bbf3be442adc92f357c7b3c46da6f84cf7
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/159664
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
189 lines
10 KiB
Plaintext
189 lines
10 KiB
Plaintext
parseUnit(main)
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skipErrorTokens(main)
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listener: beginCompilationUnit(main)
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syntheticPreviousToken(main)
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parseTopLevelDeclarationImpl(, Instance of 'DirectiveContext')
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parseMetadataStar()
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listener: beginMetadataStar(main)
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listener: endMetadataStar(0)
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parseTopLevelMemberImpl()
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listener: beginTopLevelMember(main)
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isReservedKeyword(()
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parseTopLevelMethod(, null, , Instance of 'NoType', null, main, false)
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listener: beginTopLevelMethod(, null)
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listener: handleNoType()
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ensureIdentifierPotentiallyRecovered(, topLevelFunctionDeclaration, false)
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listener: handleIdentifier(main, topLevelFunctionDeclaration)
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parseMethodTypeVar(main)
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listener: handleNoTypeVariables(()
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parseGetterOrFormalParameters(main, main, false, MemberKind.TopLevelMethod)
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parseFormalParameters(main, MemberKind.TopLevelMethod)
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parseFormalParametersRest((, MemberKind.TopLevelMethod)
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listener: beginFormalParameters((, MemberKind.TopLevelMethod)
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listener: endFormalParameters(0, (, ), MemberKind.TopLevelMethod)
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parseAsyncModifierOpt())
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listener: handleAsyncModifier(null, null)
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inPlainSync()
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parseFunctionBody(), false, false)
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listener: beginBlockFunctionBody({)
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notEofOrValue(}, var)
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parseStatement({)
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parseStatementX({)
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parseExpressionStatementOrDeclarationAfterModifiers(var, {, null, var, null, false)
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looksLikeLocalFunction(c)
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listener: beginMetadataStar(var)
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listener: endMetadataStar(0)
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listener: handleNoType(var)
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listener: beginVariablesDeclaration(c, null, var)
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parseVariablesDeclarationRest(var, true)
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parseOptionallyInitializedIdentifier(var)
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ensureIdentifier(var, localVariableDeclaration)
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listener: handleIdentifier(c, localVariableDeclaration)
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listener: beginInitializedIdentifier(c)
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parseVariableInitializerOpt(c)
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listener: handleNoVariableInitializer(c)
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listener: endInitializedIdentifier(c)
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ensureSemicolon(c)
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listener: endVariablesDeclaration(1, ;)
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notEofOrValue(}, c)
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parseStatement(;)
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parseStatementX(;)
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parseExpressionStatementOrDeclarationAfterModifiers(;, ;, null, null, null, false)
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looksLikeLocalFunction(c)
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parseExpressionStatement(;)
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parseExpression(;)
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parsePrecedenceExpression(;, 1, true)
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parseUnaryExpression(;, true)
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parsePrimary(;, expression)
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parseSendOrFunctionLiteral(;, expression)
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parseSend(;, expression)
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ensureIdentifier(;, expression)
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listener: handleIdentifier(c, expression)
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listener: handleNoTypeArguments(?.)
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parseArgumentsOpt(c)
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listener: handleNoArguments(?.)
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listener: handleSend(c, ?.)
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parsePrimary(?., expressionContinuation)
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listener: handleNoTypeArguments([)
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parseLiteralListSuffix(?., null)
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parseExpression([)
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parsePrecedenceExpression([, 1, true)
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parseUnaryExpression([, true)
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parsePrimary([, expression)
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parseLiteralInt([)
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listener: handleLiteralInt(1)
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listener: handleLiteralList(1, [, null, ])
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listener: handleEndingBinaryExpression(?.)
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parsePrecedenceExpression(=, 1, true)
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parseUnaryExpression(=, true)
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parsePrimary(=, expression)
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parseLiteralInt(=)
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listener: handleLiteralInt(42)
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listener: handleAssignmentExpression(=)
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ensureSemicolon(42)
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listener: handleExpressionStatement(;)
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notEofOrValue(}, c)
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parseStatement(;)
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parseStatementX(;)
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parseExpressionStatementOrDeclarationAfterModifiers(;, ;, null, null, null, false)
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looksLikeLocalFunction(c)
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parseExpressionStatement(;)
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parseExpression(;)
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parsePrecedenceExpression(;, 1, true)
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parseUnaryExpression(;, true)
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parsePrimary(;, expression)
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parseSendOrFunctionLiteral(;, expression)
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parseSend(;, expression)
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ensureIdentifier(;, expression)
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listener: handleIdentifier(c, expression)
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listener: handleNoTypeArguments(?)
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parseArgumentsOpt(c)
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listener: handleNoArguments(?)
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listener: handleSend(c, ?)
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canParseAsConditional(?)
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parseExpressionWithoutCascade(?)
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parsePrecedenceExpression(?, 1, false)
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parseUnaryExpression(?, false)
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parsePrimary(?, expression)
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parseLiteralListSuffix(?, null)
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parseExpression([)
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parsePrecedenceExpression([, 1, true)
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parseUnaryExpression([, true)
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parsePrimary([, expression)
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parseLiteralInt([)
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parsePrecedenceExpression(=, 1, false)
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parseUnaryExpression(=, false)
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parsePrimary(=, expression)
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parseLiteralInt(=)
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parseArgumentOrIndexStar(c, Instance of 'NoTypeParamOrArg', true)
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parseExpression([)
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parsePrecedenceExpression([, 1, true)
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parseUnaryExpression([, true)
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parsePrimary([, expression)
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parseLiteralInt([)
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listener: handleLiteralInt(1)
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listener: handleIndexedExpression(?, [, ])
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parsePrecedenceExpression(=, 1, true)
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parseUnaryExpression(=, true)
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parsePrimary(=, expression)
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parseLiteralInt(=)
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listener: handleLiteralInt(42)
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listener: handleAssignmentExpression(=)
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ensureSemicolon(42)
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listener: handleExpressionStatement(;)
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notEofOrValue(}, c)
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parseStatement(;)
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parseStatementX(;)
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parseExpressionStatementOrDeclarationAfterModifiers(;, ;, null, null, null, false)
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looksLikeLocalFunction(c)
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parseExpressionStatement(;)
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parseExpression(;)
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parsePrecedenceExpression(;, 1, true)
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parseUnaryExpression(;, true)
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parsePrimary(;, expression)
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parseSendOrFunctionLiteral(;, expression)
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parseSend(;, expression)
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ensureIdentifier(;, expression)
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listener: handleIdentifier(c, expression)
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listener: handleNoTypeArguments(?)
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parseArgumentsOpt(c)
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listener: handleNoArguments(?)
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listener: handleSend(c, ?)
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canParseAsConditional(?)
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parseExpressionWithoutCascade(?)
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parsePrecedenceExpression(?, 1, false)
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parseUnaryExpression(?, false)
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parsePrimary(?, expression)
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parseLiteralListSuffix(?, null)
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parseExpression([)
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parsePrecedenceExpression([, 1, true)
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parseUnaryExpression([, true)
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parsePrimary([, expression)
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parseLiteralInt([)
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parsePrecedenceExpression(=, 1, false)
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parseUnaryExpression(=, false)
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parsePrimary(=, expression)
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parseLiteralInt(=)
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parseArgumentOrIndexStar(c, Instance of 'NoTypeParamOrArg', true)
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parseExpression([)
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parsePrecedenceExpression([, 1, true)
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parseUnaryExpression([, true)
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parsePrimary([, expression)
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parseLiteralInt([)
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listener: handleLiteralInt(1)
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listener: handleIndexedExpression(?, [, ])
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parsePrecedenceExpression(=, 1, true)
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parseUnaryExpression(=, true)
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parsePrimary(=, expression)
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parseLiteralInt(=)
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listener: handleLiteralInt(42)
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listener: handleAssignmentExpression(=)
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ensureSemicolon(42)
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listener: handleExpressionStatement(;)
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notEofOrValue(}, })
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listener: endBlockFunctionBody(4, {, })
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listener: endTopLevelMethod(main, null, })
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listener: endTopLevelDeclaration()
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reportAllErrorTokens(main)
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listener: endCompilationUnit(1, )
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