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[flang] Fix typos, adjust nested list formatting 

Original-commit: flang-compiler/f18@c07a86ce21
Reviewed-on: https://github.com/flang-compiler/f18/pull/462
Tree-same-pre-rewrite: false
This commit is contained in:
Tim Keith 2019-05-15 07:02:23 -07:00
parent 9e012ca714
commit 610438498c
1 changed files with 7 additions and 7 deletions
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14
flang/documentation/Semantics.md
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@ -48,7 +48,7 @@ Perform semantic checks related to labels and branches:
### Rewrite DO loops ### Rewrite DO loops
This phases normalizes the parse tree by removing all unstructures `DO` loops This phase normalizes the parse tree by removing all unstructured `DO` loops
and replacing them with `DO` constructs. and replacing them with `DO` constructs.
### Name resolution ### Name resolution
@ -75,10 +75,10 @@ Types are also owned by scopes.
Name resolution happens on the parse tree in this order: Name resolution happens on the parse tree in this order:
1. Process the specification of a program unit: 1. Process the specification of a program unit:
1. Create a new scope for the unit 1. Create a new scope for the unit
2. Create a symbol for each contained subprogram containing just the name 2. Create a symbol for each contained subprogram containing just the name
3. Process the opening statement of the unit (`ModuleStmt`, `FunctionStmt`, etc.) 3. Process the opening statement of the unit (`ModuleStmt`, `FunctionStmt`, etc.)
4. Process the specification part of the unit 4. Process the specification part of the unit
2. Apply the same process recursively to nested subprograms 2. Apply the same process recursively to nested subprograms
3. Process the execution part of the program unit 3. Process the execution part of the program unit
4. Process the execution parts of nested subprograms recursively 4. Process the execution parts of nested subprograms recursively
@ -89,7 +89,7 @@ unless an error occurred.
### Rewrite parse tree ### Rewrite parse tree
The parser cannot build a completely correct parse tree without symbol information. The parser cannot build a completely correct parse tree without symbol information.
This phases correct mis-parses based on symbols: This phase corrects mis-parses based on symbols:
- Array element assignments may be parsed as statement functions: `a(i) = ...` - Array element assignments may be parsed as statement functions: `a(i) = ...`
- Namelist group names without `NML=` may be parsed as format expressions - Namelist group names without `NML=` may be parsed as format expressions
- A file unit number expression may be parsed as a character variable - A file unit number expression may be parsed as a character variable
@ -121,7 +121,7 @@ This phase also corrects mis-parses based on the result of expression analysis:
Multiple independent checkers driven by the `SemanticsVisitor` framework Multiple independent checkers driven by the `SemanticsVisitor` framework
perform the remaining semantic checks. perform the remaining semantic checks.
By this phase, and names and expressions that can be successfully resolved By this phase, all names and expressions that can be successfully resolved
have been. But there may be names without symbols or expressions without have been. But there may be names without symbols or expressions without
analyzed form if errors occurred earlier. analyzed form if errors occurred earlier.